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::Restart(const std::string &reason)
  70 {
  71         this->SendError(reason);
  72         std::string me = Config->MyDir + "/inspircd";
  73         this->Logger->Close();
  74         if (execv(me.c_str(), Config->argv) == -1)
  75         {
  76                 /* Will raise a SIGABRT if not trapped */
  77                 throw CoreException(std::string("Failed to execv()! error: ") + strerror(errno));
  78         }
  79 }
  80
  81 void InspIRCd::Start()
  82 {
  83         printf("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
  84         printf("(C) InspIRCd Development Team.\033[0m\n\n");
  85         printf("Developers:\t\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special, pippijn, peavey\033[0m\n");
  86         printf("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
  87 }
  88
  89 void InspIRCd::Rehash(int status)
  90 {
  91         SI->WriteOpers("Rehashing config file %s due to SIGHUP",ServerConfig::CleanFilename(CONFIG_FILE));
  92         fclose(SI->Config->log_file);
  93         SI->OpenLog(NULL,0);
  94         SI->Config->Read(false,NULL);
  95         FOREACH_MOD_I(SI,I_OnRehash,OnRehash(""));
  96 }
  97
  98 void InspIRCd::SetSignals()
  99 {
 100         signal(SIGALRM, SIG_IGN);
 101         signal(SIGHUP, InspIRCd::Rehash);
 102         signal(SIGPIPE, SIG_IGN);
 103         signal(SIGTERM, InspIRCd::Exit);
 104         signal(SIGCHLD, SIG_IGN);
 105 }
 106
 107 bool InspIRCd::DaemonSeed()
 108 {
 109         int childpid;
 110         if ((childpid = fork ()) < 0)
 111                 return false;
 112         else if (childpid > 0)
 113         {
 114                 /* We wait here for the child process to kill us,
 115                  * so that the shell prompt doesnt come back over
 116                  * the output.
 117                  * Sending a kill with a signal of 0 just checks
 118                  * if the child pid is still around. If theyre not,
 119                  * they threw an error and we should give up.
 120                  */
 121                 while (kill(childpid, 0) != -1)
 122                         sleep(1);
 123                 exit(ERROR);
 124         }
 125         setsid ();
 126         umask (007);
 127         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 128
 129         rlimit rl;
 130         if (getrlimit(RLIMIT_CORE, &rl) == -1)
 131         {
 132                 this->Log(DEFAULT,"Failed to getrlimit()!");
 133                 return false;
 134         }
 135         else
 136         {
 137                 rl.rlim_cur = rl.rlim_max;
 138                 if (setrlimit(RLIMIT_CORE, &rl) == -1)
 139                         this->Log(DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 140         }
 141
 142         return true;
 143 }
 144
 145 void InspIRCd::WritePID(const std::string &filename)
 146 {
 147         std::string fname = (filename.empty() ? "inspircd.pid" : filename);
 148         if (*(fname.begin()) != '/')
 149         {
 150                 std::string::size_type pos;
 151                 std::string confpath = CONFIG_FILE;
 152                 if ((pos = confpath.find("/inspircd.conf")) != std::string::npos)
 153                 {
 154                         /* Leaves us with just the path */
 155                         fname = confpath.substr(0, pos) + std::string("/") + fname;
 156                 }
 157         }
 158         std::ofstream outfile(fname.c_str());
 159         if (outfile.is_open())
 160         {
 161                 outfile << getpid();
 162                 outfile.close();
 163         }
 164         else
 165         {
 166                 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
 167                 this->Log(DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
 168                 Exit(0);
 169         }
 170 }
 171
 172 std::string InspIRCd::GetRevision()
 173 {
 174         return REVISION;
 175 }
 176
 177 InspIRCd::InspIRCd(int argc, char** argv)
 178         : 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)
 179 {
 180         int found_ports = 0;
 181         FailedPortList pl;
 182
 183         modules.resize(255);
 184         factory.resize(255);
 185
 186         this->Config = new ServerConfig(this);
 187         this->Config->opertypes.clear();
 188         this->Config->operclass.clear();
 189         this->SNO = new SnomaskManager(this);
 190         this->Start();
 191         this->TIME = this->OLDTIME = this->startup_time = time(NULL);
 192         this->time_delta = 0;
 193         this->next_call = this->TIME + 3;
 194         srand(this->TIME);
 195         this->Log(DEBUG,"*** InspIRCd starting up!");
 196         if (!ServerConfig::FileExists(CONFIG_FILE))
 197         {
 198                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
 199                 this->Log(DEFAULT,"main: no config");
 200                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
 201                 Exit(ERROR);
 202         }
 203         *this->LogFileName = 0;
 204         if (argc > 1) {
 205                 for (int i = 1; i < argc; i++)
 206                 {
 207                         if (!strcmp(argv[i],"-nofork"))
 208                         {
 209                                 Config->nofork = true;
 210                         }
 211                         else if(!strcmp(argv[i],"-debug"))
 212                         {
 213                                 Config->forcedebug = true;
 214                         }
 215                         else if(!strcmp(argv[i],"-nolog"))
 216                         {
 217                                 Config->writelog = false;
 218                         }
 219                         else if (!strcmp(argv[i],"-wait"))
 220                         {
 221                                 sleep(6);
 222                         }
 223                         else if (!strcmp(argv[i],"-logfile"))
 224                         {
 225                                 if (argc > i+1)
 226                                 {
 227                                         strlcpy(LogFileName,argv[i+1],MAXBUF);
 228                                         printf("LOG: Setting logfile to %s\n",LogFileName);
 229                                 }
 230                                 else
 231                                 {
 232                                         printf("ERROR: The -logfile parameter must be followed by a log file name and path.\n");
 233                                         Exit(ERROR);
 234                                 }
 235                                 i++;
 236                         }
 237                         else
 238                         {
 239                                 printf("Usage: %s [-nofork] [-nolog] [-debug] [-wait] [-logfile <filename>]\n",argv[0]);
 240                                 Exit(ERROR);
 241                         }
 242                 }
 243         }
 244
 245         strlcpy(Config->MyExecutable,argv[0],MAXBUF);
 246
 247         this->OpenLog(argv, argc);
 248         this->stats = new serverstats();
 249         this->Parser = new CommandParser(this);
 250         this->Timers = new TimerManager();
 251         this->XLines = new XLineManager(this);
 252         Config->ClearStack();
 253         Config->Read(true, NULL);
 254         this->CheckRoot();
 255         this->Modes = new ModeParser(this);
 256         this->AddServerName(Config->ServerName);
 257         CheckDie();
 258         InitializeDisabledCommands(Config->DisabledCommands, this);
 259         stats->BoundPortCount = BindPorts(true, found_ports, pl);
 260
 261         for(int t = 0; t < 255; t++)
 262                 Config->global_implementation[t] = 0;
 263
 264         memset(&Config->implement_lists,0,sizeof(Config->implement_lists));
 265
 266         printf("\n");
 267         this->SetSignals();
 268         if (!Config->nofork)
 269         {
 270                 if (!this->DaemonSeed())
 271                 {
 272                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 273                         Exit(ERROR);
 274                 }
 275         }
 276
 277         /* Because of limitations in kqueue on freebsd, we must fork BEFORE we
 278          * initialize the socket engine.
 279          */
 280         SocketEngineFactory* SEF = new SocketEngineFactory();
 281         SE = SEF->Create(this);
 282         delete SEF;
 283
 284         this->Res = new DNS(this);
 285
 286         this->LoadAllModules();
 287         /* Just in case no modules were loaded - fix for bug #101 */
 288         this->BuildISupport();
 289
 290         if ((stats->BoundPortCount == 0) && (found_ports > 0))
 291         {
 292                 printf("\nERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?\n");
 293                 Exit(ERROR);
 294         }
 295
 296         if (stats->BoundPortCount != (unsigned int)found_ports)
 297         {
 298                 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);
 299                 printf("The following port%s failed to bind:\n", found_ports - stats->BoundPortCount != 1 ? "s" : "");
 300                 int j = 1;
 301                 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 302                 {
 303                         printf("%d.\tIP: %s\tPort: %lu\n", j, i->first.empty() ? "<all>" : i->first.c_str(), (unsigned long)i->second);
 304                 }
 305         }
 306
 307         /* Add the listening sockets used for client inbound connections
 308          * to the socket engine
 309          */
 310         this->Log(DEBUG,"%d listeners",stats->BoundPortCount);
 311         for (unsigned long count = 0; count < stats->BoundPortCount; count++)
 312         {
 313                 this->Log(DEBUG,"Add listener: %d",Config->openSockfd[count]->GetFd());
 314                 if (!SE->AddFd(Config->openSockfd[count]))
 315                 {
 316                         printf("\nEH? Could not add listener to socketengine. You screwed up, aborting.\n");
 317                         Exit(ERROR);
 318                 }
 319         }
 320
 321         if (!Config->nofork)
 322         {
 323                 if (kill(getppid(), SIGTERM) == -1)
 324                         printf("Error killing parent process: %s\n",strerror(errno));
 325                 fclose(stdin);
 326                 fclose(stderr);
 327                 fclose(stdout);
 328         }
 329
 330         printf("\nInspIRCd is now running!\n");
 331
 332         this->WritePID(Config->PID);
 333 }
 334
 335 std::string InspIRCd::GetVersionString()
 336 {
 337         char versiondata[MAXBUF];
 338         char dnsengine[] = "singlethread-object";
 339         if (*Config->CustomVersion)
 340         {
 341                 snprintf(versiondata,MAXBUF,"%s %s :%s",VERSION,Config->ServerName,Config->CustomVersion);
 342         }
 343         else
 344         {
 345                 snprintf(versiondata,MAXBUF,"%s %s :%s [FLAGS=%lu,%s,%s]",VERSION,Config->ServerName,SYSTEM,(unsigned long)OPTIMISATION,SE->GetName().c_str(),dnsengine);
 346         }
 347         return versiondata;
 348 }
 349
 350 char* InspIRCd::ModuleError()
 351 {
 352         return MODERR;
 353 }
 354
 355 void InspIRCd::EraseFactory(int j)
 356 {
 357         int v = 0;
 358         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
 359         {
 360                 if (v == j)
 361                 {
 362                         delete *t;
 363                         factory.erase(t);
 364                         factory.push_back(NULL);
 365                         return;
 366                 }
 367                 v++;
 368         }
 369 }
 370
 371 void InspIRCd::EraseModule(int j)
 372 {
 373         int v1 = 0;
 374         for (ModuleList::iterator m = modules.begin(); m!= modules.end(); m++)
 375         {
 376                 if (v1 == j)
 377                 {
 378                         DELETE(*m);
 379                         modules.erase(m);
 380                         modules.push_back(NULL);
 381                         break;
 382                 }
 383                 v1++;
 384         }
 385         int v2 = 0;
 386         for (std::vector<std::string>::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++)
 387         {
 388                 if (v2 == j)
 389                 {
 390                        Config->module_names.erase(v);
 391                        break;
 392                 }
 393                 v2++;
 394         }
 395
 396 }
 397
 398 void InspIRCd::MoveTo(std::string modulename,int slot)
 399 {
 400         unsigned int v2 = 256;
 401         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 402         {
 403                 if (Config->module_names[v] == modulename)
 404                 {
 405                         // found an instance, swap it with the item at the end
 406                         v2 = v;
 407                         break;
 408                 }
 409         }
 410         if ((v2 != (unsigned int)slot) && (v2 < 256))
 411         {
 412                 // Swap the module names over
 413                 Config->module_names[v2] = Config->module_names[slot];
 414                 Config->module_names[slot] = modulename;
 415                 // now swap the module factories
 416                 ircd_module* temp = factory[v2];
 417                 factory[v2] = factory[slot];
 418                 factory[slot] = temp;
 419                 // now swap the module objects
 420                 Module* temp_module = modules[v2];
 421                 modules[v2] = modules[slot];
 422                 modules[slot] = temp_module;
 423                 // now swap the implement lists (we dont
 424                 // need to swap the global or recount it)
 425                 for (int n = 0; n < 255; n++)
 426                 {
 427                         char x = Config->implement_lists[v2][n];
 428                         Config->implement_lists[v2][n] = Config->implement_lists[slot][n];
 429                         Config->implement_lists[slot][n] = x;
 430                 }
 431         }
 432         else
 433         {
 434                 this->Log(DEBUG,"Move of %s to slot failed!",modulename.c_str());
 435         }
 436 }
 437
 438 void InspIRCd::MoveAfter(std::string modulename, std::string after)
 439 {
 440         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 441         {
 442                 if (Config->module_names[v] == after)
 443                 {
 444                         MoveTo(modulename, v);
 445                         return;
 446                 }
 447         }
 448 }
 449
 450 void InspIRCd::MoveBefore(std::string modulename, std::string before)
 451 {
 452         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 453         {
 454                 if (Config->module_names[v] == before)
 455                 {
 456                         if (v > 0)
 457                         {
 458                                 MoveTo(modulename, v-1);
 459                         }
 460                         else
 461                         {
 462                                 MoveTo(modulename, v);
 463                         }
 464                         return;
 465                 }
 466         }
 467 }
 468
 469 void InspIRCd::MoveToFirst(std::string modulename)
 470 {
 471         MoveTo(modulename,0);
 472 }
 473
 474 void InspIRCd::MoveToLast(std::string modulename)
 475 {
 476         MoveTo(modulename,this->GetModuleCount());
 477 }
 478
 479 void InspIRCd::BuildISupport()
 480 {
 481         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
 482         std::stringstream v;
 483         v << "WALLCHOPS WALLVOICES MODES=" << MAXMODES << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << MAXCHANS << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1;
 484         v << " CASEMAPPING=rfc1459 STATUSMSG=@%+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets << " AWAYLEN=";
 485         v << MAXAWAY << " CHANMODES=" << this->Modes->ChanModes() << " FNC NETWORK=" << Config->Network << " MAXPARA=32";
 486         Config->data005 = v.str();
 487         FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
 488         Config->Update005();
 489 }
 490
 491 bool InspIRCd::UnloadModule(const char* filename)
 492 {
 493         std::string filename_str = filename;
 494         for (unsigned int j = 0; j != Config->module_names.size(); j++)
 495         {
 496                 if (Config->module_names[j] == filename_str)
 497                 {
 498                         if (modules[j]->GetVersion().Flags & VF_STATIC)
 499                         {
 500                                 this->Log(DEFAULT,"Failed to unload STATIC module %s",filename);
 501                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
 502                                 return false;
 503                         }
 504                         std::pair<int,std::string> intercount = GetInterfaceInstanceCount(modules[j]);
 505                         if (intercount.first > 0)
 506                         {
 507                                 this->Log(DEFAULT,"Failed to unload module %s, being used by %d other(s) via interface '%s'",filename, intercount.first, intercount.second.c_str());
 508                                 snprintf(MODERR,MAXBUF,"Module not unloadable (Still in use by %d other module%s which %s using its interface '%s') -- unload dependent modules first!",
 509                                                 intercount.first,
 510                                                 intercount.first > 1 ? "s" : "",
 511                                                 intercount.first > 1 ? "are" : "is",
 512                                                 intercount.second.c_str());
 513                                 return false;
 514                         }
 515                         /* Give the module a chance to tidy out all its metadata */
 516                         for (chan_hash::iterator c = this->chanlist.begin(); c != this->chanlist.end(); c++)
 517                         {
 518                                 modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
 519                         }
 520                         for (user_hash::iterator u = this->clientlist.begin(); u != this->clientlist.end(); u++)
 521                         {
 522                                 modules[j]->OnCleanup(TYPE_USER,u->second);
 523                         }
 524
 525                         /* Tidy up any dangling resolvers */
 526                         this->Res->CleanResolvers(modules[j]);
 527
 528                         FOREACH_MOD_I(this,I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j]));
 529
 530                         for(int t = 0; t < 255; t++)
 531                         {
 532                                 Config->global_implementation[t] -= Config->implement_lists[j][t];
 533                         }
 534
 535                         /* We have to renumber implement_lists after unload because the module numbers change!
 536                          */
 537                         for(int j2 = j; j2 < 254; j2++)
 538                         {
 539                                 for(int t = 0; t < 255; t++)
 540                                 {
 541                                         Config->implement_lists[j2][t] = Config->implement_lists[j2+1][t];
 542                                 }
 543                         }
 544
 545                         // found the module
 546                         this->Log(DEBUG,"Removing dependent commands...");
 547                         Parser->RemoveCommands(filename);
 548                         this->Log(DEBUG,"Deleting module...");
 549                         this->EraseModule(j);
 550                         this->Log(DEBUG,"Erasing module entry...");
 551                         this->EraseFactory(j);
 552                         this->Log(DEFAULT,"Module %s unloaded",filename);
 553                         this->ModCount--;
 554                         BuildISupport();
 555                         return true;
 556                 }
 557         }
 558         this->Log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
 559         snprintf(MODERR,MAXBUF,"Module not loaded");
 560         return false;
 561 }
 562
 563 bool InspIRCd::LoadModule(const char* filename)
 564 {
 565         /* Do we have a glob pattern in the filename?
 566          * The user wants to load multiple modules which
 567          * match the pattern.
 568          */
 569         if (strchr(filename,'*') || (strchr(filename,'?')))
 570         {
 571                 int n_match = 0;
 572                 DIR* library = opendir(Config->ModPath);
 573                 if (library)
 574                 {
 575                         /* Try and locate and load all modules matching the pattern */
 576                         dirent* entry = NULL;
 577                         while ((entry = readdir(library)))
 578                         {
 579                                 if (this->MatchText(entry->d_name, filename))
 580                                 {
 581                                         if (!this->LoadModule(entry->d_name))
 582                                                 n_match++;
 583                                 }
 584                         }
 585                         closedir(library);
 586                 }
 587                 /* Loadmodule will now return false if any one of the modules failed
 588                  * to load (but wont abort when it encounters a bad one) and when 1 or
 589                  * more modules were actually loaded.
 590                  */
 591                 return (n_match > 0);
 592         }
 593
 594         char modfile[MAXBUF];
 595         snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
 596         std::string filename_str = filename;
 597
 598         if (!ServerConfig::DirValid(modfile))
 599         {
 600                 this->Log(DEFAULT,"Module %s is not within the modules directory.",modfile);
 601                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
 602                 return false;
 603         }
 604         this->Log(DEBUG,"Loading module: %s",modfile);
 605
 606         if (ServerConfig::FileExists(modfile))
 607         {
 608
 609                 for (unsigned int j = 0; j < Config->module_names.size(); j++)
 610                 {
 611                         if (Config->module_names[j] == filename_str)
 612                         {
 613                                 this->Log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
 614                                 snprintf(MODERR,MAXBUF,"Module already loaded");
 615                                 return false;
 616                         }
 617                 }
 618                 try
 619                 {
 620                         ircd_module* a = new ircd_module(this, modfile);
 621                         factory[this->ModCount+1] = a;
 622                         if (factory[this->ModCount+1]->LastError())
 623                         {
 624                                 this->Log(DEFAULT,"Unable to load %s: %s",modfile,factory[this->ModCount+1]->LastError());
 625                                 snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[this->ModCount+1]->LastError());
 626                                 return false;
 627                         }
 628                         if ((long)factory[this->ModCount+1]->factory != -1)
 629                         {
 630                                 Module* m = factory[this->ModCount+1]->factory->CreateModule(this);
 631
 632                                 Version v = m->GetVersion();
 633
 634                                 if (v.API != API_VERSION)
 635                                 {
 636                                         delete m;
 637                                         delete a;
 638                                         this->Log(DEFAULT,"Unable to load %s: Incorrect module API version: %d (our version: %d)",modfile,v.API,API_VERSION);
 639                                         snprintf(MODERR,MAXBUF,"Loader/Linker error: Incorrect module API version: %d (our version: %d)",v.API,API_VERSION);
 640                                         return false;
 641                                 }
 642                                 else
 643                                 {
 644                                         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]"));
 645                                 }
 646
 647                                 modules[this->ModCount+1] = m;
 648                                 /* save the module and the module's classfactory, if
 649                                  * this isnt done, random crashes can occur :/ */
 650                                 Config->module_names.push_back(filename);
 651
 652                                 char* x = &Config->implement_lists[this->ModCount+1][0];
 653                                 for(int t = 0; t < 255; t++)
 654                                         x[t] = 0;
 655
 656                                 modules[this->ModCount+1]->Implements(x);
 657
 658                                 for(int t = 0; t < 255; t++)
 659                                         Config->global_implementation[t] += Config->implement_lists[this->ModCount+1][t];
 660                         }
 661                         else
 662                         {
 663                                 this->Log(DEFAULT,"Unable to load %s",modfile);
 664                                 snprintf(MODERR,MAXBUF,"Factory function failed: Probably missing init_module() entrypoint.");
 665                                 return false;
 666                         }
 667                 }
 668                 catch (CoreException& modexcept)
 669                 {
 670                         this->Log(DEFAULT,"Unable to load %s: ",modfile,modexcept.GetReason());
 671                         snprintf(MODERR,MAXBUF,"Factory function of %s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 672                         return false;
 673                 }
 674         }
 675         else
 676         {
 677                 this->Log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
 678                 snprintf(MODERR,MAXBUF,"Module file could not be found");
 679                 return false;
 680         }
 681         this->ModCount++;
 682         FOREACH_MOD_I(this,I_OnLoadModule,OnLoadModule(modules[this->ModCount],filename_str));
 683         // now work out which modules, if any, want to move to the back of the queue,
 684         // and if they do, move them there.
 685         std::vector<std::string> put_to_back;
 686         std::vector<std::string> put_to_front;
 687         std::map<std::string,std::string> put_before;
 688         std::map<std::string,std::string> put_after;
 689         for (unsigned int j = 0; j < Config->module_names.size(); j++)
 690         {
 691                 if (modules[j]->Prioritize() == PRIORITY_LAST)
 692                         put_to_back.push_back(Config->module_names[j]);
 693                 else if (modules[j]->Prioritize() == PRIORITY_FIRST)
 694                         put_to_front.push_back(Config->module_names[j]);
 695                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_BEFORE)
 696                         put_before[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 697                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_AFTER)
 698                         put_after[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 699         }
 700         for (unsigned int j = 0; j < put_to_back.size(); j++)
 701                 MoveToLast(put_to_back[j]);
 702         for (unsigned int j = 0; j < put_to_front.size(); j++)
 703                 MoveToFirst(put_to_front[j]);
 704         for (std::map<std::string,std::string>::iterator j = put_before.begin(); j != put_before.end(); j++)
 705                 MoveBefore(j->first,j->second);
 706         for (std::map<std::string,std::string>::iterator j = put_after.begin(); j != put_after.end(); j++)
 707                 MoveAfter(j->first,j->second);
 708         BuildISupport();
 709         return true;
 710 }
 711
 712 void InspIRCd::DoOneIteration(bool process_module_sockets)
 713 {
 714         static rusage ru;
 715
 716         /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 717          * Once per loop iteration is pleanty.
 718          */
 719         OLDTIME = TIME;
 720         TIME = time(NULL);
 721
 722         /* Run background module timers every few seconds
 723          * (the docs say modules shouldnt rely on accurate
 724          * timing using this event, so we dont have to
 725          * time this exactly).
 726          */
 727         if (TIME != OLDTIME)
 728         {
 729                 if (TIME < OLDTIME)
 730                         WriteOpers("*** \002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %d secs.",abs(OLDTIME-TIME));
 731                 if ((TIME % 3600) == 0)
 732                 {
 733                         irc::whowas::MaintainWhoWas(this, TIME);
 734                 }
 735                 Timers->TickTimers(TIME);
 736                 this->DoBackgroundUserStuff(TIME);
 737
 738                 if ((TIME % 5) == 0)
 739                 {
 740                         XLines->expire_lines();
 741                         FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 742                         Timers->TickMissedTimers(TIME);
 743                 }
 744
 745                 if (!getrusage(0, &ru))
 746                 {
 747                         gettimeofday(&this->stats->LastSampled, NULL);
 748                         this->stats->LastCPU = ru.ru_utime;
 749                 }
 750         }
 751
 752         /* Call the socket engine to wait on the active
 753          * file descriptors. The socket engine has everything's
 754          * descriptors in its list... dns, modules, users,
 755          * servers... so its nice and easy, just one call.
 756          * This will cause any read or write events to be
 757          * dispatched to their handlers.
 758          */
 759         SE->DispatchEvents();
 760 }
 761
 762 bool InspIRCd::IsIdent(const char* n)
 763 {
 764         if (!n || !*n)
 765                 return false;
 766
 767         for (char* i = (char*)n; *i; i++)
 768         {
 769                 if ((*i >= 'A') && (*i <= '}'))
 770                 {
 771                         continue;
 772                 }
 773                 if (((*i >= '0') && (*i <= '9')) || (*i == '-') || (*i == '.'))
 774                 {
 775                         continue;
 776                 }
 777                 return false;
 778         }
 779         return true;
 780 }
 781
 782
 783 int InspIRCd::Run()
 784 {
 785         while (true)
 786         {
 787                 DoOneIteration(true);
 788         }
 789         /* This is never reached -- we hope! */
 790         return 0;
 791 }
 792
 793 /**********************************************************************************/
 794
 795 /**
 796  * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
 797  */
 798
 799 int main(int argc, char** argv)
 800 {
 801         SI = new InspIRCd(argc, argv);
 802         SI->Run();
 803         delete SI;
 804         return 0;
 805 }
 806
 807 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 808  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 809  * registration timeout maximum seconds)
 810  */
 811 bool InspIRCd::AllModulesReportReady(userrec* user)
 812 {
 813         if (!Config->global_implementation[I_OnCheckReady])
 814                 return true;
 815
 816         for (int i = 0; i <= this->GetModuleCount(); i++)
 817         {
 818                 if (Config->implement_lists[i][I_OnCheckReady])
 819                 {
 820                         int res = modules[i]->OnCheckReady(user);
 821                         if (!res)
 822                                 return false;
 823                 }
 824         }
 825         return true;
 826 }
 827
 828 int InspIRCd::GetModuleCount()
 829 {
 830         return this->ModCount;
 831 }
 832
 833 time_t InspIRCd::Time(bool delta)
 834 {
 835         if (delta)
 836                 return TIME + time_delta;
 837         return TIME;
 838 }
 839
 840 int InspIRCd::SetTimeDelta(int delta)
 841 {
 842         int old = time_delta;
 843         time_delta += delta;
 844         this->Log(DEBUG, "Time delta set to %d (was %d)", time_delta, old);
 845         return old;
 846 }
 847
 848 void InspIRCd::AddLocalClone(userrec* user)
 849 {
 850         clonemap::iterator x = local_clones.find(user->GetIPString());
 851         if (x != local_clones.end())
 852                 x->second++;
 853         else
 854                 local_clones[user->GetIPString()] = 1;
 855 }
 856
 857 void InspIRCd::AddGlobalClone(userrec* user)
 858 {
 859         clonemap::iterator y = global_clones.find(user->GetIPString());
 860         if (y != global_clones.end())
 861                 y->second++;
 862         else
 863                 global_clones[user->GetIPString()] = 1;
 864 }
 865
 866 int InspIRCd::GetTimeDelta()
 867 {
 868         return time_delta;
 869 }
 870
 871 bool FileLogger::Readable()
 872 {
 873         return false;
 874 }
 875
 876 void FileLogger::HandleEvent(EventType et, int errornum)
 877 {
 878         this->WriteLogLine("");
 879         ServerInstance->SE->DelFd(this);
 880 }
 881
 882 void FileLogger::WriteLogLine(const std::string &line)
 883 {
 884         if (line.length())
 885                 buffer.append(line);
 886
 887         if (log)
 888         {
 889                 int written = fprintf(log,"%s",buffer.c_str());
 890                 if ((written >= 0) && (written < (int)buffer.length()))
 891                 {
 892                         buffer.erase(0, buffer.length());
 893                         ServerInstance->SE->AddFd(this);
 894                 }
 895                 else if (written == -1)
 896                 {
 897                         if (errno == EAGAIN)
 898                                 ServerInstance->SE->AddFd(this);
 899                 }
 900                 else
 901                 {
 902                         /* Wrote the whole buffer, and no need for write callback */
 903                         buffer = "";
 904                 }
 905         }
 906         if (writeops++ % 20)
 907         {
 908                 fflush(log);
 909         }
 910 }
 911
 912 void FileLogger::Close()
 913 {
 914         if (log)
 915         {
 916                 int flags = fcntl(fileno(log), F_GETFL, 0);
 917                 fcntl(fileno(log), F_SETFL, flags ^ O_NONBLOCK);
 918                 if (buffer.size())
 919                         fprintf(log,"%s",buffer.c_str());
 920                 fflush(log);
 921                 fclose(log);
 922         }
 923         buffer = "";
 924         ServerInstance->SE->DelFd(this);
 925 }
 926
 927 FileLogger::FileLogger(InspIRCd* Instance, FILE* logfile) : ServerInstance(Instance), log(logfile), writeops(0)
 928 {
 929         irc::sockets::NonBlocking(fileno(log));
 930         this->SetFd(fileno(log));
 931         buffer = "";
 932 }
 933
 934 FileLogger::~FileLogger()
 935 {
 936         this->Close();
 937 }
 938