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         std::vector<std::string> mymodnames;
  72         int MyModCount = ModCount;
  73
  74         this->SendError(reason);
  75
  76         this->Log(DEBUG,"Closing listening client sockets...");
  77         for (unsigned int i = 0; i < stats->BoundPortCount; i++)
  78                 /* This calls the constructor and closes the listening socket */
  79                 delete Config->openSockfd[i];
  80
  81         /* Unload all modules, so they get a chance to clean up their listeners */
  82         for (int j = 0; j < ModCount; j++)
  83                 mymodnames.push_back(Config->module_names[j]);
  84
  85         this->Log(DEBUG,"Unloading modules...");
  86         for (int k = 0; k < MyModCount; k++)
  87                 this->UnloadModule(mymodnames[k].c_str());
  88
  89         this->Log(DEBUG,"Closing client sockets...");
  90         for (std::vector<userrec*>::const_iterator i = this->local_users.begin(); i != this->local_users.end(); i++)
  91                 (*i)->CloseSocket();
  92
  93         std::string me = Config->MyDir + "/inspircd";
  94
  95         this->Log(DEBUG,"Closing log and calling execv to start new instance of '%s'...", me.c_str());
  96
  97         this->Logger->Close();
  98         if (execv(me.c_str(), Config->argv) == -1)
  99         {
 100                 /* Will raise a SIGABRT if not trapped */
 101                 throw CoreException(std::string("Failed to execv()! error: ") + strerror(errno));
 102         }
 103 }
 104
 105 void InspIRCd::Start()
 106 {
 107         printf("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
 108         printf("(C) InspIRCd Development Team.\033[0m\n\n");
 109         printf("Developers:\t\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special, pippijn, peavey\033[0m\n");
 110         printf("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
 111 }
 112
 113 void InspIRCd::Rehash(int status)
 114 {
 115         SI->WriteOpers("Rehashing config file %s due to SIGHUP",ServerConfig::CleanFilename(CONFIG_FILE));
 116         fclose(SI->Config->log_file);
 117         SI->OpenLog(NULL,0);
 118         SI->Config->Read(false,NULL);
 119         FOREACH_MOD_I(SI,I_OnRehash,OnRehash(""));
 120 }
 121
 122 void InspIRCd::SetSignals()
 123 {
 124         signal(SIGALRM, SIG_IGN);
 125         signal(SIGHUP, InspIRCd::Rehash);
 126         signal(SIGPIPE, SIG_IGN);
 127         signal(SIGTERM, InspIRCd::Exit);
 128         signal(SIGCHLD, SIG_IGN);
 129 }
 130
 131 bool InspIRCd::DaemonSeed()
 132 {
 133         int childpid;
 134         if ((childpid = fork ()) < 0)
 135                 return false;
 136         else if (childpid > 0)
 137         {
 138                 /* We wait here for the child process to kill us,
 139                  * so that the shell prompt doesnt come back over
 140                  * the output.
 141                  * Sending a kill with a signal of 0 just checks
 142                  * if the child pid is still around. If theyre not,
 143                  * they threw an error and we should give up.
 144                  */
 145                 while (kill(childpid, 0) != -1)
 146                         sleep(1);
 147                 exit(ERROR);
 148         }
 149         setsid ();
 150         umask (007);
 151         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 152
 153         rlimit rl;
 154         if (getrlimit(RLIMIT_CORE, &rl) == -1)
 155         {
 156                 this->Log(DEFAULT,"Failed to getrlimit()!");
 157                 return false;
 158         }
 159         else
 160         {
 161                 rl.rlim_cur = rl.rlim_max;
 162                 if (setrlimit(RLIMIT_CORE, &rl) == -1)
 163                         this->Log(DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 164         }
 165
 166         return true;
 167 }
 168
 169 void InspIRCd::WritePID(const std::string &filename)
 170 {
 171         std::string fname = (filename.empty() ? "inspircd.pid" : filename);
 172         if (*(fname.begin()) != '/')
 173         {
 174                 std::string::size_type pos;
 175                 std::string confpath = CONFIG_FILE;
 176                 if ((pos = confpath.find("/inspircd.conf")) != std::string::npos)
 177                 {
 178                         /* Leaves us with just the path */
 179                         fname = confpath.substr(0, pos) + std::string("/") + fname;
 180                 }
 181         }
 182         std::ofstream outfile(fname.c_str());
 183         if (outfile.is_open())
 184         {
 185                 outfile << getpid();
 186                 outfile.close();
 187         }
 188         else
 189         {
 190                 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
 191                 this->Log(DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
 192                 Exit(0);
 193         }
 194 }
 195
 196 std::string InspIRCd::GetRevision()
 197 {
 198         return REVISION;
 199 }
 200
 201 InspIRCd::InspIRCd(int argc, char** argv)
 202         : 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)
 203 {
 204         int found_ports = 0;
 205         FailedPortList pl;
 206
 207         modules.resize(255);
 208         factory.resize(255);
 209
 210         this->Config = new ServerConfig(this);
 211         this->Config->opertypes.clear();
 212         this->Config->operclass.clear();
 213         this->SNO = new SnomaskManager(this);
 214         this->Start();
 215         this->TIME = this->OLDTIME = this->startup_time = time(NULL);
 216         this->time_delta = 0;
 217         this->next_call = this->TIME + 3;
 218         srand(this->TIME);
 219         this->Log(DEBUG,"*** InspIRCd starting up!");
 220         if (!ServerConfig::FileExists(CONFIG_FILE))
 221         {
 222                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
 223                 this->Log(DEFAULT,"main: no config");
 224                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
 225                 Exit(ERROR);
 226         }
 227         *this->LogFileName = 0;
 228         if (argc > 1) {
 229                 for (int i = 1; i < argc; i++)
 230                 {
 231                         if (!strcmp(argv[i],"-nofork"))
 232                         {
 233                                 Config->nofork = true;
 234                         }
 235                         else if(!strcmp(argv[i],"-debug"))
 236                         {
 237                                 Config->forcedebug = true;
 238                         }
 239                         else if(!strcmp(argv[i],"-nolog"))
 240                         {
 241                                 Config->writelog = false;
 242                         }
 243                         else if (!strcmp(argv[i],"-wait"))
 244                         {
 245                                 sleep(6);
 246                         }
 247                         else if (!strcmp(argv[i],"-logfile"))
 248                         {
 249                                 if (argc > i+1)
 250                                 {
 251                                         strlcpy(LogFileName,argv[i+1],MAXBUF);
 252                                         printf("LOG: Setting logfile to %s\n",LogFileName);
 253                                 }
 254                                 else
 255                                 {
 256                                         printf("ERROR: The -logfile parameter must be followed by a log file name and path.\n");
 257                                         Exit(ERROR);
 258                                 }
 259                                 i++;
 260                         }
 261                         else
 262                         {
 263                                 printf("Usage: %s [-nofork] [-nolog] [-debug] [-wait] [-logfile <filename>]\n",argv[0]);
 264                                 Exit(ERROR);
 265                         }
 266                 }
 267         }
 268
 269         strlcpy(Config->MyExecutable,argv[0],MAXBUF);
 270
 271         this->OpenLog(argv, argc);
 272         this->stats = new serverstats();
 273         this->Parser = new CommandParser(this);
 274         this->Timers = new TimerManager();
 275         this->XLines = new XLineManager(this);
 276         Config->ClearStack();
 277         Config->Read(true, NULL);
 278         this->CheckRoot();
 279         this->Modes = new ModeParser(this);
 280         this->AddServerName(Config->ServerName);
 281         CheckDie();
 282         InitializeDisabledCommands(Config->DisabledCommands, this);
 283         stats->BoundPortCount = BindPorts(true, found_ports, pl);
 284
 285         for(int t = 0; t < 255; t++)
 286                 Config->global_implementation[t] = 0;
 287
 288         memset(&Config->implement_lists,0,sizeof(Config->implement_lists));
 289
 290         printf("\n");
 291         this->SetSignals();
 292         if (!Config->nofork)
 293         {
 294                 if (!this->DaemonSeed())
 295                 {
 296                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 297                         Exit(ERROR);
 298                 }
 299         }
 300
 301         /* Because of limitations in kqueue on freebsd, we must fork BEFORE we
 302          * initialize the socket engine.
 303          */
 304         SocketEngineFactory* SEF = new SocketEngineFactory();
 305         SE = SEF->Create(this);
 306         delete SEF;
 307
 308         this->Res = new DNS(this);
 309
 310         this->LoadAllModules();
 311         /* Just in case no modules were loaded - fix for bug #101 */
 312         this->BuildISupport();
 313
 314         if ((stats->BoundPortCount == 0) && (found_ports > 0))
 315         {
 316                 printf("\nERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?\n");
 317                 Exit(ERROR);
 318         }
 319
 320         if (stats->BoundPortCount != (unsigned int)found_ports)
 321         {
 322                 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);
 323                 printf("The following port%s failed to bind:\n", found_ports - stats->BoundPortCount != 1 ? "s" : "");
 324                 int j = 1;
 325                 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 326                 {
 327                         printf("%d.\tIP: %s\tPort: %lu\n", j, i->first.empty() ? "<all>" : i->first.c_str(), (unsigned long)i->second);
 328                 }
 329         }
 330
 331         /* Add the listening sockets used for client inbound connections
 332          * to the socket engine
 333          */
 334         this->Log(DEBUG,"%d listeners",stats->BoundPortCount);
 335         for (unsigned long count = 0; count < stats->BoundPortCount; count++)
 336         {
 337                 this->Log(DEBUG,"Add listener: %d",Config->openSockfd[count]->GetFd());
 338                 if (!SE->AddFd(Config->openSockfd[count]))
 339                 {
 340                         printf("\nEH? Could not add listener to socketengine. You screwed up, aborting.\n");
 341                         Exit(ERROR);
 342                 }
 343         }
 344
 345         if (!Config->nofork)
 346         {
 347                 if (kill(getppid(), SIGTERM) == -1)
 348                         printf("Error killing parent process: %s\n",strerror(errno));
 349                 fclose(stdin);
 350                 fclose(stderr);
 351                 fclose(stdout);
 352         }
 353
 354         printf("\nInspIRCd is now running!\n");
 355
 356         this->WritePID(Config->PID);
 357 }
 358
 359 std::string InspIRCd::GetVersionString()
 360 {
 361         char versiondata[MAXBUF];
 362         char dnsengine[] = "singlethread-object";
 363         if (*Config->CustomVersion)
 364         {
 365                 snprintf(versiondata,MAXBUF,"%s %s :%s",VERSION,Config->ServerName,Config->CustomVersion);
 366         }
 367         else
 368         {
 369                 snprintf(versiondata,MAXBUF,"%s %s :%s [FLAGS=%lu,%s,%s]",VERSION,Config->ServerName,SYSTEM,(unsigned long)OPTIMISATION,SE->GetName().c_str(),dnsengine);
 370         }
 371         return versiondata;
 372 }
 373
 374 char* InspIRCd::ModuleError()
 375 {
 376         return MODERR;
 377 }
 378
 379 void InspIRCd::EraseFactory(int j)
 380 {
 381         int v = 0;
 382         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
 383         {
 384                 if (v == j)
 385                 {
 386                         delete *t;
 387                         factory.erase(t);
 388                         factory.push_back(NULL);
 389                         return;
 390                 }
 391                 v++;
 392         }
 393 }
 394
 395 void InspIRCd::EraseModule(int j)
 396 {
 397         int v1 = 0;
 398         for (ModuleList::iterator m = modules.begin(); m!= modules.end(); m++)
 399         {
 400                 if (v1 == j)
 401                 {
 402                         DELETE(*m);
 403                         modules.erase(m);
 404                         modules.push_back(NULL);
 405                         break;
 406                 }
 407                 v1++;
 408         }
 409         int v2 = 0;
 410         for (std::vector<std::string>::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++)
 411         {
 412                 if (v2 == j)
 413                 {
 414                        Config->module_names.erase(v);
 415                        break;
 416                 }
 417                 v2++;
 418         }
 419
 420 }
 421
 422 void InspIRCd::MoveTo(std::string modulename,int slot)
 423 {
 424         unsigned int v2 = 256;
 425         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 426         {
 427                 if (Config->module_names[v] == modulename)
 428                 {
 429                         // found an instance, swap it with the item at the end
 430                         v2 = v;
 431                         break;
 432                 }
 433         }
 434         if ((v2 != (unsigned int)slot) && (v2 < 256))
 435         {
 436                 // Swap the module names over
 437                 Config->module_names[v2] = Config->module_names[slot];
 438                 Config->module_names[slot] = modulename;
 439                 // now swap the module factories
 440                 ircd_module* temp = factory[v2];
 441                 factory[v2] = factory[slot];
 442                 factory[slot] = temp;
 443                 // now swap the module objects
 444                 Module* temp_module = modules[v2];
 445                 modules[v2] = modules[slot];
 446                 modules[slot] = temp_module;
 447                 // now swap the implement lists (we dont
 448                 // need to swap the global or recount it)
 449                 for (int n = 0; n < 255; n++)
 450                 {
 451                         char x = Config->implement_lists[v2][n];
 452                         Config->implement_lists[v2][n] = Config->implement_lists[slot][n];
 453                         Config->implement_lists[slot][n] = x;
 454                 }
 455         }
 456         else
 457         {
 458                 this->Log(DEBUG,"Move of %s to slot failed!",modulename.c_str());
 459         }
 460 }
 461
 462 void InspIRCd::MoveAfter(std::string modulename, std::string after)
 463 {
 464         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 465         {
 466                 if (Config->module_names[v] == after)
 467                 {
 468                         MoveTo(modulename, v);
 469                         return;
 470                 }
 471         }
 472 }
 473
 474 void InspIRCd::MoveBefore(std::string modulename, std::string before)
 475 {
 476         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 477         {
 478                 if (Config->module_names[v] == before)
 479                 {
 480                         if (v > 0)
 481                         {
 482                                 MoveTo(modulename, v-1);
 483                         }
 484                         else
 485                         {
 486                                 MoveTo(modulename, v);
 487                         }
 488                         return;
 489                 }
 490         }
 491 }
 492
 493 void InspIRCd::MoveToFirst(std::string modulename)
 494 {
 495         MoveTo(modulename,0);
 496 }
 497
 498 void InspIRCd::MoveToLast(std::string modulename)
 499 {
 500         MoveTo(modulename,this->GetModuleCount());
 501 }
 502
 503 void InspIRCd::BuildISupport()
 504 {
 505         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
 506         std::stringstream v;
 507         v << "WALLCHOPS WALLVOICES MODES=" << MAXMODES << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << MAXCHANS << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1;
 508         v << " CASEMAPPING=rfc1459 STATUSMSG=@%+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets << " AWAYLEN=";
 509         v << MAXAWAY << " CHANMODES=" << this->Modes->ChanModes() << " FNC NETWORK=" << Config->Network << " MAXPARA=32";
 510         Config->data005 = v.str();
 511         FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
 512         Config->Update005();
 513 }
 514
 515 bool InspIRCd::UnloadModule(const char* filename)
 516 {
 517         std::string filename_str = filename;
 518         for (unsigned int j = 0; j != Config->module_names.size(); j++)
 519         {
 520                 if (Config->module_names[j] == filename_str)
 521                 {
 522                         if (modules[j]->GetVersion().Flags & VF_STATIC)
 523                         {
 524                                 this->Log(DEFAULT,"Failed to unload STATIC module %s",filename);
 525                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
 526                                 return false;
 527                         }
 528                         std::pair<int,std::string> intercount = GetInterfaceInstanceCount(modules[j]);
 529                         if (intercount.first > 0)
 530                         {
 531                                 this->Log(DEFAULT,"Failed to unload module %s, being used by %d other(s) via interface '%s'",filename, intercount.first, intercount.second.c_str());
 532                                 snprintf(MODERR,MAXBUF,"Module not unloadable (Still in use by %d other module%s which %s using its interface '%s') -- unload dependent modules first!",
 533                                                 intercount.first,
 534                                                 intercount.first > 1 ? "s" : "",
 535                                                 intercount.first > 1 ? "are" : "is",
 536                                                 intercount.second.c_str());
 537                                 return false;
 538                         }
 539                         /* Give the module a chance to tidy out all its metadata */
 540                         for (chan_hash::iterator c = this->chanlist.begin(); c != this->chanlist.end(); c++)
 541                         {
 542                                 modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
 543                         }
 544                         for (user_hash::iterator u = this->clientlist.begin(); u != this->clientlist.end(); u++)
 545                         {
 546                                 modules[j]->OnCleanup(TYPE_USER,u->second);
 547                         }
 548
 549                         /* Tidy up any dangling resolvers */
 550                         this->Res->CleanResolvers(modules[j]);
 551
 552                         FOREACH_MOD_I(this,I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j]));
 553
 554                         for(int t = 0; t < 255; t++)
 555                         {
 556                                 Config->global_implementation[t] -= Config->implement_lists[j][t];
 557                         }
 558
 559                         /* We have to renumber implement_lists after unload because the module numbers change!
 560                          */
 561                         for(int j2 = j; j2 < 254; j2++)
 562                         {
 563                                 for(int t = 0; t < 255; t++)
 564                                 {
 565                                         Config->implement_lists[j2][t] = Config->implement_lists[j2+1][t];
 566                                 }
 567                         }
 568
 569                         // found the module
 570                         this->Log(DEBUG,"Removing dependent commands...");
 571                         Parser->RemoveCommands(filename);
 572                         this->Log(DEBUG,"Deleting module...");
 573                         this->EraseModule(j);
 574                         this->Log(DEBUG,"Erasing module entry...");
 575                         this->EraseFactory(j);
 576                         this->Log(DEFAULT,"Module %s unloaded",filename);
 577                         this->ModCount--;
 578                         BuildISupport();
 579                         return true;
 580                 }
 581         }
 582         this->Log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
 583         snprintf(MODERR,MAXBUF,"Module not loaded");
 584         return false;
 585 }
 586
 587 bool InspIRCd::LoadModule(const char* filename)
 588 {
 589         /* Do we have a glob pattern in the filename?
 590          * The user wants to load multiple modules which
 591          * match the pattern.
 592          */
 593         if (strchr(filename,'*') || (strchr(filename,'?')))
 594         {
 595                 int n_match = 0;
 596                 DIR* library = opendir(Config->ModPath);
 597                 if (library)
 598                 {
 599                         /* Try and locate and load all modules matching the pattern */
 600                         dirent* entry = NULL;
 601                         while ((entry = readdir(library)))
 602                         {
 603                                 if (this->MatchText(entry->d_name, filename))
 604                                 {
 605                                         if (!this->LoadModule(entry->d_name))
 606                                                 n_match++;
 607                                 }
 608                         }
 609                         closedir(library);
 610                 }
 611                 /* Loadmodule will now return false if any one of the modules failed
 612                  * to load (but wont abort when it encounters a bad one) and when 1 or
 613                  * more modules were actually loaded.
 614                  */
 615                 return (n_match > 0);
 616         }
 617
 618         char modfile[MAXBUF];
 619         snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
 620         std::string filename_str = filename;
 621
 622         if (!ServerConfig::DirValid(modfile))
 623         {
 624                 this->Log(DEFAULT,"Module %s is not within the modules directory.",modfile);
 625                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
 626                 return false;
 627         }
 628         this->Log(DEBUG,"Loading module: %s",modfile);
 629
 630         if (ServerConfig::FileExists(modfile))
 631         {
 632
 633                 for (unsigned int j = 0; j < Config->module_names.size(); j++)
 634                 {
 635                         if (Config->module_names[j] == filename_str)
 636                         {
 637                                 this->Log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
 638                                 snprintf(MODERR,MAXBUF,"Module already loaded");
 639                                 return false;
 640                         }
 641                 }
 642                 try
 643                 {
 644                         ircd_module* a = new ircd_module(this, modfile);
 645                         factory[this->ModCount+1] = a;
 646                         if (factory[this->ModCount+1]->LastError())
 647                         {
 648                                 this->Log(DEFAULT,"Unable to load %s: %s",modfile,factory[this->ModCount+1]->LastError());
 649                                 snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[this->ModCount+1]->LastError());
 650                                 return false;
 651                         }
 652                         if ((long)factory[this->ModCount+1]->factory != -1)
 653                         {
 654                                 Module* m = factory[this->ModCount+1]->factory->CreateModule(this);
 655
 656                                 Version v = m->GetVersion();
 657
 658                                 if (v.API != API_VERSION)
 659                                 {
 660                                         delete m;
 661                                         delete a;
 662                                         this->Log(DEFAULT,"Unable to load %s: Incorrect module API version: %d (our version: %d)",modfile,v.API,API_VERSION);
 663                                         snprintf(MODERR,MAXBUF,"Loader/Linker error: Incorrect module API version: %d (our version: %d)",v.API,API_VERSION);
 664                                         return false;
 665                                 }
 666                                 else
 667                                 {
 668                                         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]"));
 669                                 }
 670
 671                                 modules[this->ModCount+1] = m;
 672                                 /* save the module and the module's classfactory, if
 673                                  * this isnt done, random crashes can occur :/ */
 674                                 Config->module_names.push_back(filename);
 675
 676                                 char* x = &Config->implement_lists[this->ModCount+1][0];
 677                                 for(int t = 0; t < 255; t++)
 678                                         x[t] = 0;
 679
 680                                 modules[this->ModCount+1]->Implements(x);
 681
 682                                 for(int t = 0; t < 255; t++)
 683                                         Config->global_implementation[t] += Config->implement_lists[this->ModCount+1][t];
 684                         }
 685                         else
 686                         {
 687                                 this->Log(DEFAULT,"Unable to load %s",modfile);
 688                                 snprintf(MODERR,MAXBUF,"Factory function failed: Probably missing init_module() entrypoint.");
 689                                 return false;
 690                         }
 691                 }
 692                 catch (CoreException& modexcept)
 693                 {
 694                         this->Log(DEFAULT,"Unable to load %s: ",modfile,modexcept.GetReason());
 695                         snprintf(MODERR,MAXBUF,"Factory function of %s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 696                         return false;
 697                 }
 698         }
 699         else
 700         {
 701                 this->Log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
 702                 snprintf(MODERR,MAXBUF,"Module file could not be found");
 703                 return false;
 704         }
 705         this->ModCount++;
 706         FOREACH_MOD_I(this,I_OnLoadModule,OnLoadModule(modules[this->ModCount],filename_str));
 707         // now work out which modules, if any, want to move to the back of the queue,
 708         // and if they do, move them there.
 709         std::vector<std::string> put_to_back;
 710         std::vector<std::string> put_to_front;
 711         std::map<std::string,std::string> put_before;
 712         std::map<std::string,std::string> put_after;
 713         for (unsigned int j = 0; j < Config->module_names.size(); j++)
 714         {
 715                 if (modules[j]->Prioritize() == PRIORITY_LAST)
 716                         put_to_back.push_back(Config->module_names[j]);
 717                 else if (modules[j]->Prioritize() == PRIORITY_FIRST)
 718                         put_to_front.push_back(Config->module_names[j]);
 719                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_BEFORE)
 720                         put_before[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 721                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_AFTER)
 722                         put_after[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 723         }
 724         for (unsigned int j = 0; j < put_to_back.size(); j++)
 725                 MoveToLast(put_to_back[j]);
 726         for (unsigned int j = 0; j < put_to_front.size(); j++)
 727                 MoveToFirst(put_to_front[j]);
 728         for (std::map<std::string,std::string>::iterator j = put_before.begin(); j != put_before.end(); j++)
 729                 MoveBefore(j->first,j->second);
 730         for (std::map<std::string,std::string>::iterator j = put_after.begin(); j != put_after.end(); j++)
 731                 MoveAfter(j->first,j->second);
 732         BuildISupport();
 733         return true;
 734 }
 735
 736 void InspIRCd::DoOneIteration(bool process_module_sockets)
 737 {
 738         static rusage ru;
 739
 740         /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 741          * Once per loop iteration is pleanty.
 742          */
 743         OLDTIME = TIME;
 744         TIME = time(NULL);
 745
 746         /* Run background module timers every few seconds
 747          * (the docs say modules shouldnt rely on accurate
 748          * timing using this event, so we dont have to
 749          * time this exactly).
 750          */
 751         if (TIME != OLDTIME)
 752         {
 753                 if (TIME < OLDTIME)
 754                         WriteOpers("*** \002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %d secs.",abs(OLDTIME-TIME));
 755                 if ((TIME % 3600) == 0)
 756                 {
 757                         irc::whowas::MaintainWhoWas(this, TIME);
 758                 }
 759                 Timers->TickTimers(TIME);
 760                 this->DoBackgroundUserStuff(TIME);
 761
 762                 if ((TIME % 5) == 0)
 763                 {
 764                         XLines->expire_lines();
 765                         FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 766                         Timers->TickMissedTimers(TIME);
 767                 }
 768
 769                 if (!getrusage(0, &ru))
 770                 {
 771                         gettimeofday(&this->stats->LastSampled, NULL);
 772                         this->stats->LastCPU = ru.ru_utime;
 773                 }
 774         }
 775
 776         /* Call the socket engine to wait on the active
 777          * file descriptors. The socket engine has everything's
 778          * descriptors in its list... dns, modules, users,
 779          * servers... so its nice and easy, just one call.
 780          * This will cause any read or write events to be
 781          * dispatched to their handlers.
 782          */
 783         SE->DispatchEvents();
 784 }
 785
 786 bool InspIRCd::IsIdent(const char* n)
 787 {
 788         if (!n || !*n)
 789                 return false;
 790
 791         for (char* i = (char*)n; *i; i++)
 792         {
 793                 if ((*i >= 'A') && (*i <= '}'))
 794                 {
 795                         continue;
 796                 }
 797                 if (((*i >= '0') && (*i <= '9')) || (*i == '-') || (*i == '.'))
 798                 {
 799                         continue;
 800                 }
 801                 return false;
 802         }
 803         return true;
 804 }
 805
 806
 807 int InspIRCd::Run()
 808 {
 809         while (true)
 810         {
 811                 DoOneIteration(true);
 812         }
 813         /* This is never reached -- we hope! */
 814         return 0;
 815 }
 816
 817 /**********************************************************************************/
 818
 819 /**
 820  * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
 821  */
 822
 823 int main(int argc, char** argv)
 824 {
 825         SI = new InspIRCd(argc, argv);
 826         SI->Run();
 827         delete SI;
 828         return 0;
 829 }
 830
 831 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 832  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 833  * registration timeout maximum seconds)
 834  */
 835 bool InspIRCd::AllModulesReportReady(userrec* user)
 836 {
 837         if (!Config->global_implementation[I_OnCheckReady])
 838                 return true;
 839
 840         for (int i = 0; i <= this->GetModuleCount(); i++)
 841         {
 842                 if (Config->implement_lists[i][I_OnCheckReady])
 843                 {
 844                         int res = modules[i]->OnCheckReady(user);
 845                         if (!res)
 846                                 return false;
 847                 }
 848         }
 849         return true;
 850 }
 851
 852 int InspIRCd::GetModuleCount()
 853 {
 854         return this->ModCount;
 855 }
 856
 857 time_t InspIRCd::Time(bool delta)
 858 {
 859         if (delta)
 860                 return TIME + time_delta;
 861         return TIME;
 862 }
 863
 864 int InspIRCd::SetTimeDelta(int delta)
 865 {
 866         int old = time_delta;
 867         time_delta += delta;
 868         this->Log(DEBUG, "Time delta set to %d (was %d)", time_delta, old);
 869         return old;
 870 }
 871
 872 void InspIRCd::AddLocalClone(userrec* user)
 873 {
 874         clonemap::iterator x = local_clones.find(user->GetIPString());
 875         if (x != local_clones.end())
 876                 x->second++;
 877         else
 878                 local_clones[user->GetIPString()] = 1;
 879 }
 880
 881 void InspIRCd::AddGlobalClone(userrec* user)
 882 {
 883         clonemap::iterator y = global_clones.find(user->GetIPString());
 884         if (y != global_clones.end())
 885                 y->second++;
 886         else
 887                 global_clones[user->GetIPString()] = 1;
 888 }
 889
 890 int InspIRCd::GetTimeDelta()
 891 {
 892         return time_delta;
 893 }
 894
 895 bool FileLogger::Readable()
 896 {
 897         return false;
 898 }
 899
 900 void FileLogger::HandleEvent(EventType et, int errornum)
 901 {
 902         this->WriteLogLine("");
 903         ServerInstance->SE->DelFd(this);
 904 }
 905
 906 void FileLogger::WriteLogLine(const std::string &line)
 907 {
 908         if (line.length())
 909                 buffer.append(line);
 910
 911         if (log)
 912         {
 913                 int written = fprintf(log,"%s",buffer.c_str());
 914                 if ((written >= 0) && (written < (int)buffer.length()))
 915                 {
 916                         buffer.erase(0, buffer.length());
 917                         ServerInstance->SE->AddFd(this);
 918                 }
 919                 else if (written == -1)
 920                 {
 921                         if (errno == EAGAIN)
 922                                 ServerInstance->SE->AddFd(this);
 923                 }
 924                 else
 925                 {
 926                         /* Wrote the whole buffer, and no need for write callback */
 927                         buffer = "";
 928                 }
 929         }
 930         if (writeops++ % 20)
 931         {
 932                 fflush(log);
 933         }
 934 }
 935
 936 void FileLogger::Close()
 937 {
 938         if (log)
 939         {
 940                 int flags = fcntl(fileno(log), F_GETFL, 0);
 941                 fcntl(fileno(log), F_SETFL, flags ^ O_NONBLOCK);
 942                 if (buffer.size())
 943                         fprintf(log,"%s",buffer.c_str());
 944                 fflush(log);
 945                 fclose(log);
 946         }
 947         buffer = "";
 948         ServerInstance->SE->DelFd(this);
 949 }
 950
 951 FileLogger::FileLogger(InspIRCd* Instance, FILE* logfile) : ServerInstance(Instance), log(logfile), writeops(0)
 952 {
 953         irc::sockets::NonBlocking(fileno(log));
 954         this->SetFd(fileno(log));
 955         buffer = "";
 956 }
 957
 958 FileLogger::~FileLogger()
 959 {
 960         this->Close();
 961 }
 962