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) ChatSpike 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         printf("Name concept:\t\t\033[1;32mLord_Zathras\033[0m\n\n");
  76 }
  77
  78 void InspIRCd::Rehash(int status)
  79 {
  80         SI->WriteOpers("Rehashing config file %s due to SIGHUP",ServerConfig::CleanFilename(CONFIG_FILE));
  81         fclose(SI->Config->log_file);
  82         SI->OpenLog(NULL,0);
  83         SI->Config->Read(false,NULL);
  84         FOREACH_MOD_I(SI,I_OnRehash,OnRehash(""));
  85 }
  86
  87 void InspIRCd::SetSignals()
  88 {
  89         signal(SIGALRM, SIG_IGN);
  90         signal(SIGHUP, InspIRCd::Rehash);
  91         signal(SIGPIPE, SIG_IGN);
  92         signal(SIGTERM, InspIRCd::Exit);
  93         signal(SIGCHLD, SIG_IGN);
  94 }
  95
  96 bool InspIRCd::DaemonSeed()
  97 {
  98         int childpid;
  99         if ((childpid = fork ()) < 0)
 100                 return false;
 101         else if (childpid > 0)
 102         {
 103                 /* We wait here for the child process to kill us,
 104                  * so that the shell prompt doesnt come back over
 105                  * the output.
 106                  * Sending a kill with a signal of 0 just checks
 107                  * if the child pid is still around. If theyre not,
 108                  * they threw an error and we should give up.
 109                  */
 110                 while (kill(childpid, 0) != -1)
 111                         sleep(1);
 112                 exit(ERROR);
 113         }
 114         setsid ();
 115         umask (007);
 116         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 117
 118         rlimit rl;
 119         if (getrlimit(RLIMIT_CORE, &rl) == -1)
 120         {
 121                 this->Log(DEFAULT,"Failed to getrlimit()!");
 122                 return false;
 123         }
 124         else
 125         {
 126                 rl.rlim_cur = rl.rlim_max;
 127                 if (setrlimit(RLIMIT_CORE, &rl) == -1)
 128                         this->Log(DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 129         }
 130
 131         return true;
 132 }
 133
 134 void InspIRCd::WritePID(const std::string &filename)
 135 {
 136         std::string fname = (filename.empty() ? "inspircd.pid" : filename);
 137         if (*(fname.begin()) != '/')
 138         {
 139                 std::string::size_type pos;
 140                 std::string confpath = CONFIG_FILE;
 141                 if ((pos = confpath.find("/inspircd.conf")) != std::string::npos)
 142                 {
 143                         /* Leaves us with just the path */
 144                         fname = confpath.substr(0, pos) + std::string("/") + fname;
 145                 }
 146         }
 147         std::ofstream outfile(fname.c_str());
 148         if (outfile.is_open())
 149         {
 150                 outfile << getpid();
 151                 outfile.close();
 152         }
 153         else
 154         {
 155                 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
 156                 this->Log(DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
 157                 Exit(0);
 158         }
 159 }
 160
 161 std::string InspIRCd::GetRevision()
 162 {
 163         return REVISION;
 164 }
 165
 166 InspIRCd::InspIRCd(int argc, char** argv)
 167         : 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)
 168 {
 169         int found_ports = 0;
 170         FailedPortList pl;
 171
 172         modules.resize(255);
 173         factory.resize(255);
 174
 175         this->Config = new ServerConfig(this);
 176         this->Config->opertypes.clear();
 177         this->Config->operclass.clear();
 178         this->SNO = new SnomaskManager(this);
 179         this->Start();
 180         this->TIME = this->OLDTIME = this->startup_time = time(NULL);
 181         this->time_delta = 0;
 182         this->next_call = this->TIME + 3;
 183         srand(this->TIME);
 184         this->Log(DEBUG,"*** InspIRCd starting up!");
 185         if (!ServerConfig::FileExists(CONFIG_FILE))
 186         {
 187                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
 188                 this->Log(DEFAULT,"main: no config");
 189                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
 190                 Exit(ERROR);
 191         }
 192         *this->LogFileName = 0;
 193         if (argc > 1) {
 194                 for (int i = 1; i < argc; i++)
 195                 {
 196                         if (!strcmp(argv[i],"-nofork"))
 197                         {
 198                                 Config->nofork = true;
 199                         }
 200                         else if(!strcmp(argv[i],"-debug"))
 201                         {
 202                                 Config->forcedebug = true;
 203                         }
 204                         else if(!strcmp(argv[i],"-nolog"))
 205                         {
 206                                 Config->writelog = false;
 207                         }
 208                         else if (!strcmp(argv[i],"-wait"))
 209                         {
 210                                 sleep(6);
 211                         }
 212                         else if (!strcmp(argv[i],"-logfile"))
 213                         {
 214                                 if (argc > i+1)
 215                                 {
 216                                         strlcpy(LogFileName,argv[i+1],MAXBUF);
 217                                         printf("LOG: Setting logfile to %s\n",LogFileName);
 218                                 }
 219                                 else
 220                                 {
 221                                         printf("ERROR: The -logfile parameter must be followed by a log file name and path.\n");
 222                                         Exit(ERROR);
 223                                 }
 224                                 i++;
 225                         }
 226                         else
 227                         {
 228                                 printf("Usage: %s [-nofork] [-nolog] [-debug] [-wait] [-logfile <filename>]\n",argv[0]);
 229                                 Exit(ERROR);
 230                         }
 231                 }
 232         }
 233
 234         strlcpy(Config->MyExecutable,argv[0],MAXBUF);
 235
 236         this->OpenLog(argv, argc);
 237         this->stats = new serverstats();
 238         this->Parser = new CommandParser(this);
 239         this->Timers = new TimerManager();
 240         this->XLines = new XLineManager(this);
 241         Config->ClearStack();
 242         Config->Read(true, NULL);
 243         this->CheckRoot();
 244         this->Modes = new ModeParser(this);
 245         this->AddServerName(Config->ServerName);
 246         CheckDie();
 247         InitializeDisabledCommands(Config->DisabledCommands, this);
 248         stats->BoundPortCount = BindPorts(true, found_ports, pl);
 249
 250         for(int t = 0; t < 255; t++)
 251                 Config->global_implementation[t] = 0;
 252
 253         memset(&Config->implement_lists,0,sizeof(Config->implement_lists));
 254
 255         printf("\n");
 256         this->SetSignals();
 257         if (!Config->nofork)
 258         {
 259                 if (!this->DaemonSeed())
 260                 {
 261                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 262                         Exit(ERROR);
 263                 }
 264         }
 265
 266         /* Because of limitations in kqueue on freebsd, we must fork BEFORE we
 267          * initialize the socket engine.
 268          */
 269         SocketEngineFactory* SEF = new SocketEngineFactory();
 270         SE = SEF->Create(this);
 271         delete SEF;
 272
 273         this->Res = new DNS(this);
 274
 275         this->LoadAllModules();
 276         /* Just in case no modules were loaded - fix for bug #101 */
 277         this->BuildISupport();
 278
 279         if ((stats->BoundPortCount == 0) && (found_ports > 0))
 280         {
 281                 printf("\nERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?\n");
 282                 Exit(ERROR);
 283         }
 284
 285         if (stats->BoundPortCount != (unsigned int)found_ports)
 286         {
 287                 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);
 288                 printf("The following port%s failed to bind:\n", found_ports - stats->BoundPortCount != 1 ? "s" : "");
 289                 int j = 1;
 290                 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 291                 {
 292                         printf("%d.\tIP: %s\tPort: %lu\n", j, i->first.empty() ? "<all>" : i->first.c_str(), (unsigned long)i->second);
 293                 }
 294         }
 295
 296         /* Add the listening sockets used for client inbound connections
 297          * to the socket engine
 298          */
 299         this->Log(DEBUG,"%d listeners",stats->BoundPortCount);
 300         for (unsigned long count = 0; count < stats->BoundPortCount; count++)
 301         {
 302                 this->Log(DEBUG,"Add listener: %d",Config->openSockfd[count]->GetFd());
 303                 if (!SE->AddFd(Config->openSockfd[count]))
 304                 {
 305                         printf("\nEH? Could not add listener to socketengine. You screwed up, aborting.\n");
 306                         Exit(ERROR);
 307                 }
 308         }
 309
 310         if (!Config->nofork)
 311         {
 312                 if (kill(getppid(), SIGTERM) == -1)
 313                         printf("Error killing parent process: %s\n",strerror(errno));
 314                 fclose(stdin);
 315                 fclose(stderr);
 316                 fclose(stdout);
 317         }
 318
 319         printf("\nInspIRCd is now running!\n");
 320
 321         this->WritePID(Config->PID);
 322 }
 323
 324 std::string InspIRCd::GetVersionString()
 325 {
 326         char versiondata[MAXBUF];
 327         char dnsengine[] = "singlethread-object";
 328         if (*Config->CustomVersion)
 329         {
 330                 snprintf(versiondata,MAXBUF,"%s %s :%s",VERSION,Config->ServerName,Config->CustomVersion);
 331         }
 332         else
 333         {
 334                 snprintf(versiondata,MAXBUF,"%s %s :%s [FLAGS=%lu,%s,%s]",VERSION,Config->ServerName,SYSTEM,(unsigned long)OPTIMISATION,SE->GetName().c_str(),dnsengine);
 335         }
 336         return versiondata;
 337 }
 338
 339 char* InspIRCd::ModuleError()
 340 {
 341         return MODERR;
 342 }
 343
 344 void InspIRCd::EraseFactory(int j)
 345 {
 346         int v = 0;
 347         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
 348         {
 349                 if (v == j)
 350                 {
 351                         delete *t;
 352                         factory.erase(t);
 353                         factory.push_back(NULL);
 354                         return;
 355                 }
 356                 v++;
 357         }
 358 }
 359
 360 void InspIRCd::EraseModule(int j)
 361 {
 362         int v1 = 0;
 363         for (ModuleList::iterator m = modules.begin(); m!= modules.end(); m++)
 364         {
 365                 if (v1 == j)
 366                 {
 367                         DELETE(*m);
 368                         modules.erase(m);
 369                         modules.push_back(NULL);
 370                         break;
 371                 }
 372                 v1++;
 373         }
 374         int v2 = 0;
 375         for (std::vector<std::string>::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++)
 376         {
 377                 if (v2 == j)
 378                 {
 379                        Config->module_names.erase(v);
 380                        break;
 381                 }
 382                 v2++;
 383         }
 384
 385 }
 386
 387 void InspIRCd::MoveTo(std::string modulename,int slot)
 388 {
 389         unsigned int v2 = 256;
 390         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 391         {
 392                 if (Config->module_names[v] == modulename)
 393                 {
 394                         // found an instance, swap it with the item at the end
 395                         v2 = v;
 396                         break;
 397                 }
 398         }
 399         if ((v2 != (unsigned int)slot) && (v2 < 256))
 400         {
 401                 // Swap the module names over
 402                 Config->module_names[v2] = Config->module_names[slot];
 403                 Config->module_names[slot] = modulename;
 404                 // now swap the module factories
 405                 ircd_module* temp = factory[v2];
 406                 factory[v2] = factory[slot];
 407                 factory[slot] = temp;
 408                 // now swap the module objects
 409                 Module* temp_module = modules[v2];
 410                 modules[v2] = modules[slot];
 411                 modules[slot] = temp_module;
 412                 // now swap the implement lists (we dont
 413                 // need to swap the global or recount it)
 414                 for (int n = 0; n < 255; n++)
 415                 {
 416                         char x = Config->implement_lists[v2][n];
 417                         Config->implement_lists[v2][n] = Config->implement_lists[slot][n];
 418                         Config->implement_lists[slot][n] = x;
 419                 }
 420         }
 421         else
 422         {
 423                 this->Log(DEBUG,"Move of %s to slot failed!",modulename.c_str());
 424         }
 425 }
 426
 427 void InspIRCd::MoveAfter(std::string modulename, std::string after)
 428 {
 429         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 430         {
 431                 if (Config->module_names[v] == after)
 432                 {
 433                         MoveTo(modulename, v);
 434                         return;
 435                 }
 436         }
 437 }
 438
 439 void InspIRCd::MoveBefore(std::string modulename, std::string before)
 440 {
 441         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 442         {
 443                 if (Config->module_names[v] == before)
 444                 {
 445                         if (v > 0)
 446                         {
 447                                 MoveTo(modulename, v-1);
 448                         }
 449                         else
 450                         {
 451                                 MoveTo(modulename, v);
 452                         }
 453                         return;
 454                 }
 455         }
 456 }
 457
 458 void InspIRCd::MoveToFirst(std::string modulename)
 459 {
 460         MoveTo(modulename,0);
 461 }
 462
 463 void InspIRCd::MoveToLast(std::string modulename)
 464 {
 465         MoveTo(modulename,this->GetModuleCount());
 466 }
 467
 468 void InspIRCd::BuildISupport()
 469 {
 470         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
 471         std::stringstream v;
 472         v << "WALLCHOPS WALLVOICES MODES=" << MAXMODES << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << MAXCHANS << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1;
 473         v << " CASEMAPPING=rfc1459 STATUSMSG=@%+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets << " AWAYLEN=";
 474         v << MAXAWAY << " CHANMODES=" << this->Modes->ChanModes() << " FNC NETWORK=" << Config->Network << " MAXPARA=32";
 475         Config->data005 = v.str();
 476         FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
 477         Config->Update005();
 478 }
 479
 480 bool InspIRCd::UnloadModule(const char* filename)
 481 {
 482         std::string filename_str = filename;
 483         for (unsigned int j = 0; j != Config->module_names.size(); j++)
 484         {
 485                 if (Config->module_names[j] == filename_str)
 486                 {
 487                         if (modules[j]->GetVersion().Flags & VF_STATIC)
 488                         {
 489                                 this->Log(DEFAULT,"Failed to unload STATIC module %s",filename);
 490                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
 491                                 return false;
 492                         }
 493                         std::pair<int,std::string> intercount = GetInterfaceInstanceCount(modules[j]);
 494                         if (intercount.first > 0)
 495                         {
 496                                 this->Log(DEFAULT,"Failed to unload module %s, being used by %d other(s) via interface '%s'",filename, intercount.first, intercount.second.c_str());
 497                                 snprintf(MODERR,MAXBUF,"Module not unloadable (Still in use by %d other module%s which %s using its interface '%s') -- unload dependent modules first!",
 498                                                 intercount.first,
 499                                                 intercount.first > 1 ? "s" : "",
 500                                                 intercount.first > 1 ? "are" : "is",
 501                                                 intercount.second.c_str());
 502                                 return false;
 503                         }
 504                         /* Give the module a chance to tidy out all its metadata */
 505                         for (chan_hash::iterator c = this->chanlist.begin(); c != this->chanlist.end(); c++)
 506                         {
 507                                 modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
 508                         }
 509                         for (user_hash::iterator u = this->clientlist.begin(); u != this->clientlist.end(); u++)
 510                         {
 511                                 modules[j]->OnCleanup(TYPE_USER,u->second);
 512                         }
 513
 514                         /* Tidy up any dangling resolvers */
 515                         this->Res->CleanResolvers(modules[j]);
 516
 517                         FOREACH_MOD_I(this,I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j]));
 518
 519                         for(int t = 0; t < 255; t++)
 520                         {
 521                                 Config->global_implementation[t] -= Config->implement_lists[j][t];
 522                         }
 523
 524                         /* We have to renumber implement_lists after unload because the module numbers change!
 525                          */
 526                         for(int j2 = j; j2 < 254; j2++)
 527                         {
 528                                 for(int t = 0; t < 255; t++)
 529                                 {
 530                                         Config->implement_lists[j2][t] = Config->implement_lists[j2+1][t];
 531                                 }
 532                         }
 533
 534                         // found the module
 535                         this->Log(DEBUG,"Removing dependent commands...");
 536                         Parser->RemoveCommands(filename);
 537                         this->Log(DEBUG,"Deleting module...");
 538                         this->EraseModule(j);
 539                         this->Log(DEBUG,"Erasing module entry...");
 540                         this->EraseFactory(j);
 541                         this->Log(DEFAULT,"Module %s unloaded",filename);
 542                         this->ModCount--;
 543                         BuildISupport();
 544                         return true;
 545                 }
 546         }
 547         this->Log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
 548         snprintf(MODERR,MAXBUF,"Module not loaded");
 549         return false;
 550 }
 551
 552 bool InspIRCd::LoadModule(const char* filename)
 553 {
 554         /* Do we have a glob pattern in the filename?
 555          * The user wants to load multiple modules which
 556          * match the pattern.
 557          */
 558         if (strchr(filename,'*') || (strchr(filename,'?')))
 559         {
 560                 int n_match = 0;
 561                 DIR* library = opendir(Config->ModPath);
 562                 if (library)
 563                 {
 564                         /* Try and locate and load all modules matching the pattern */
 565                         dirent* entry = NULL;
 566                         while ((entry = readdir(library)))
 567                         {
 568                                 if (this->MatchText(entry->d_name, filename))
 569                                 {
 570                                         if (!this->LoadModule(entry->d_name))
 571                                                 n_match++;
 572                                 }
 573                         }
 574                         closedir(library);
 575                 }
 576                 /* Loadmodule will now return false if any one of the modules failed
 577                  * to load (but wont abort when it encounters a bad one) and when 1 or
 578                  * more modules were actually loaded.
 579                  */
 580                 return (n_match > 0);
 581         }
 582
 583         char modfile[MAXBUF];
 584         snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
 585         std::string filename_str = filename;
 586
 587         if (!ServerConfig::DirValid(modfile))
 588         {
 589                 this->Log(DEFAULT,"Module %s is not within the modules directory.",modfile);
 590                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
 591                 return false;
 592         }
 593         this->Log(DEBUG,"Loading module: %s",modfile);
 594
 595         if (ServerConfig::FileExists(modfile))
 596         {
 597
 598                 for (unsigned int j = 0; j < Config->module_names.size(); j++)
 599                 {
 600                         if (Config->module_names[j] == filename_str)
 601                         {
 602                                 this->Log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
 603                                 snprintf(MODERR,MAXBUF,"Module already loaded");
 604                                 return false;
 605                         }
 606                 }
 607                 try
 608                 {
 609                         ircd_module* a = new ircd_module(this, modfile);
 610                         factory[this->ModCount+1] = a;
 611                         if (factory[this->ModCount+1]->LastError())
 612                         {
 613                                 this->Log(DEFAULT,"Unable to load %s: %s",modfile,factory[this->ModCount+1]->LastError());
 614                                 snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[this->ModCount+1]->LastError());
 615                                 return false;
 616                         }
 617                         if ((long)factory[this->ModCount+1]->factory != -1)
 618                         {
 619                                 Module* m = factory[this->ModCount+1]->factory->CreateModule(this);
 620
 621                                 Version v = m->GetVersion();
 622
 623                                 if (v.API != API_VERSION)
 624                                 {
 625                                         delete m;
 626                                         delete a;
 627                                         this->Log(DEFAULT,"Unable to load %s: Incorrect module API version: %d (our version: %d)",modfile,v.API,API_VERSION);
 628                                         snprintf(MODERR,MAXBUF,"Loader/Linker error: Incorrect module API version: %d (our version: %d)",v.API,API_VERSION);
 629                                         return false;
 630                                 }
 631                                 else
 632                                 {
 633                                         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]"));
 634                                 }
 635
 636                                 modules[this->ModCount+1] = m;
 637                                 /* save the module and the module's classfactory, if
 638                                  * this isnt done, random crashes can occur :/ */
 639                                 Config->module_names.push_back(filename);
 640
 641                                 char* x = &Config->implement_lists[this->ModCount+1][0];
 642                                 for(int t = 0; t < 255; t++)
 643                                         x[t] = 0;
 644
 645                                 modules[this->ModCount+1]->Implements(x);
 646
 647                                 for(int t = 0; t < 255; t++)
 648                                         Config->global_implementation[t] += Config->implement_lists[this->ModCount+1][t];
 649                         }
 650                         else
 651                         {
 652                                 this->Log(DEFAULT,"Unable to load %s",modfile);
 653                                 snprintf(MODERR,MAXBUF,"Factory function failed: Probably missing init_module() entrypoint.");
 654                                 return false;
 655                         }
 656                 }
 657                 catch (ModuleException& modexcept)
 658                 {
 659                         this->Log(DEFAULT,"Unable to load %s: ",modfile,modexcept.GetReason());
 660                         snprintf(MODERR,MAXBUF,"Factory function threw an exception: %s",modexcept.GetReason());
 661                         return false;
 662                 }
 663         }
 664         else
 665         {
 666                 this->Log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
 667                 snprintf(MODERR,MAXBUF,"Module file could not be found");
 668                 return false;
 669         }
 670         this->ModCount++;
 671         FOREACH_MOD_I(this,I_OnLoadModule,OnLoadModule(modules[this->ModCount],filename_str));
 672         // now work out which modules, if any, want to move to the back of the queue,
 673         // and if they do, move them there.
 674         std::vector<std::string> put_to_back;
 675         std::vector<std::string> put_to_front;
 676         std::map<std::string,std::string> put_before;
 677         std::map<std::string,std::string> put_after;
 678         for (unsigned int j = 0; j < Config->module_names.size(); j++)
 679         {
 680                 if (modules[j]->Prioritize() == PRIORITY_LAST)
 681                         put_to_back.push_back(Config->module_names[j]);
 682                 else if (modules[j]->Prioritize() == PRIORITY_FIRST)
 683                         put_to_front.push_back(Config->module_names[j]);
 684                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_BEFORE)
 685                         put_before[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 686                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_AFTER)
 687                         put_after[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 688         }
 689         for (unsigned int j = 0; j < put_to_back.size(); j++)
 690                 MoveToLast(put_to_back[j]);
 691         for (unsigned int j = 0; j < put_to_front.size(); j++)
 692                 MoveToFirst(put_to_front[j]);
 693         for (std::map<std::string,std::string>::iterator j = put_before.begin(); j != put_before.end(); j++)
 694                 MoveBefore(j->first,j->second);
 695         for (std::map<std::string,std::string>::iterator j = put_after.begin(); j != put_after.end(); j++)
 696                 MoveAfter(j->first,j->second);
 697         BuildISupport();
 698         return true;
 699 }
 700
 701 void InspIRCd::DoOneIteration(bool process_module_sockets)
 702 {
 703         static rusage ru;
 704
 705         /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 706          * Once per loop iteration is pleanty.
 707          */
 708         OLDTIME = TIME;
 709         TIME = time(NULL);
 710
 711         /* Run background module timers every few seconds
 712          * (the docs say modules shouldnt rely on accurate
 713          * timing using this event, so we dont have to
 714          * time this exactly).
 715          */
 716         if (TIME != OLDTIME)
 717         {
 718                 if (TIME < OLDTIME)
 719                         WriteOpers("*** \002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %d secs.",abs(OLDTIME-TIME));
 720                 if ((TIME % 3600) == 0)
 721                 {
 722                         irc::whowas::MaintainWhoWas(this, TIME);
 723                 }
 724                 Timers->TickTimers(TIME);
 725                 this->DoBackgroundUserStuff(TIME);
 726
 727                 if ((TIME % 5) == 0)
 728                 {
 729                         XLines->expire_lines();
 730                         FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 731                         Timers->TickMissedTimers(TIME);
 732                 }
 733
 734                 if (!getrusage(0, &ru))
 735                 {
 736                         gettimeofday(&this->stats->LastSampled, NULL);
 737                         this->stats->LastCPU = ru.ru_utime;
 738                 }
 739         }
 740
 741         /* Call the socket engine to wait on the active
 742          * file descriptors. The socket engine has everything's
 743          * descriptors in its list... dns, modules, users,
 744          * servers... so its nice and easy, just one call.
 745          * This will cause any read or write events to be
 746          * dispatched to their handlers.
 747          */
 748         SE->DispatchEvents();
 749 }
 750
 751 bool InspIRCd::IsIdent(const char* n)
 752 {
 753         if (!n || !*n)
 754                 return false;
 755
 756         for (char* i = (char*)n; *i; i++)
 757         {
 758                 if ((*i >= 'A') && (*i <= '}'))
 759                 {
 760                         continue;
 761                 }
 762                 if (((*i >= '0') && (*i <= '9')) || (*i == '-') || (*i == '.'))
 763                 {
 764                         continue;
 765                 }
 766                 return false;
 767         }
 768         return true;
 769 }
 770
 771
 772 int InspIRCd::Run()
 773 {
 774         while (true)
 775         {
 776                 DoOneIteration(true);
 777         }
 778         /* This is never reached -- we hope! */
 779         return 0;
 780 }
 781
 782 /**********************************************************************************/
 783
 784 /**
 785  * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
 786  */
 787
 788 int main(int argc, char** argv)
 789 {
 790         SI = new InspIRCd(argc, argv);
 791         SI->Run();
 792         delete SI;
 793         return 0;
 794 }
 795
 796 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 797  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 798  * registration timeout maximum seconds)
 799  */
 800 bool InspIRCd::AllModulesReportReady(userrec* user)
 801 {
 802         if (!Config->global_implementation[I_OnCheckReady])
 803                 return true;
 804
 805         for (int i = 0; i <= this->GetModuleCount(); i++)
 806         {
 807                 if (Config->implement_lists[i][I_OnCheckReady])
 808                 {
 809                         int res = modules[i]->OnCheckReady(user);
 810                         if (!res)
 811                                 return false;
 812                 }
 813         }
 814         return true;
 815 }
 816
 817 int InspIRCd::GetModuleCount()
 818 {
 819         return this->ModCount;
 820 }
 821
 822 time_t InspIRCd::Time(bool delta)
 823 {
 824         if (delta)
 825                 return TIME + time_delta;
 826         return TIME;
 827 }
 828
 829 int InspIRCd::SetTimeDelta(int delta)
 830 {
 831         int old = time_delta;
 832         time_delta += delta;
 833         this->Log(DEBUG, "Time delta set to %d (was %d)", time_delta, old);
 834         return old;
 835 }
 836
 837 void InspIRCd::AddLocalClone(userrec* user)
 838 {
 839         clonemap::iterator x = local_clones.find(user->GetIPString());
 840         if (x != local_clones.end())
 841                 x->second++;
 842         else
 843                 local_clones[user->GetIPString()] = 1;
 844 }
 845
 846 void InspIRCd::AddGlobalClone(userrec* user)
 847 {
 848         clonemap::iterator y = global_clones.find(user->GetIPString());
 849         if (y != global_clones.end())
 850                 y->second++;
 851         else
 852                 global_clones[user->GetIPString()] = 1;
 853 }
 854
 855 int InspIRCd::GetTimeDelta()
 856 {
 857         return time_delta;
 858 }
 859
 860 bool FileLogger::Readable()
 861 {
 862         return false;
 863 }
 864
 865 void FileLogger::HandleEvent(EventType et, int errornum)
 866 {
 867         this->WriteLogLine("");
 868         ServerInstance->SE->DelFd(this);
 869 }
 870
 871 void FileLogger::WriteLogLine(const std::string &line)
 872 {
 873         if (line.length())
 874                 buffer.append(line);
 875
 876         if (log)
 877         {
 878                 int written = fprintf(log,"%s",buffer.c_str());
 879                 if ((written >= 0) && (written < (int)buffer.length()))
 880                 {
 881                         buffer.erase(0, buffer.length());
 882                         ServerInstance->SE->AddFd(this);
 883                 }
 884                 else if (written == -1)
 885                 {
 886                         if (errno == EAGAIN)
 887                                 ServerInstance->SE->AddFd(this);
 888                 }
 889                 else
 890                 {
 891                         /* Wrote the whole buffer, and no need for write callback */
 892                         buffer = "";
 893                 }
 894         }
 895         if (writeops++ % 20)
 896         {
 897                 fflush(log);
 898         }
 899 }
 900
 901 void FileLogger::Close()
 902 {
 903         if (log)
 904         {
 905                 int flags = fcntl(fileno(log), F_GETFL, 0);
 906                 fcntl(fileno(log), F_SETFL, flags ^ O_NONBLOCK);
 907                 if (buffer.size())
 908                         fprintf(log,"%s",buffer.c_str());
 909                 fflush(log);
 910                 fclose(log);
 911         }
 912         buffer = "";
 913         ServerInstance->SE->DelFd(this);
 914 }
 915
 916 FileLogger::FileLogger(InspIRCd* Instance, FILE* logfile) : ServerInstance(Instance), log(logfile), writeops(0)
 917 {
 918         irc::sockets::NonBlocking(fileno(log));
 919         this->SetFd(fileno(log));
 920         buffer = "";
 921 }
 922
 923 FileLogger::~FileLogger()
 924 {
 925         this->Close();
 926 }
 927