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 = this->GetModuleCount();
  73
  74         /* SendError flushes each client's queue,
  75          * regardless of writeability state
  76          */
  77         this->SendError(reason);
  78
  79         for (unsigned int i = 0; i < stats->BoundPortCount; i++)
  80                 /* This calls the constructor and closes the listening socket */
  81                 delete Config->openSockfd[i];
  82
  83         /* We do this twice, so that any service providers get a chance to be
  84          * unhooked by the modules using them, but then get a chance to be
  85          * removed themsleves.
  86          */
  87         for (int tries = 0; tries < 2; tries++)
  88         {
  89                 MyModCount = this->GetModuleCount();
  90                 mymodnames.clear();
  91
  92                 /* Unload all modules, so they get a chance to clean up their listeners */
  93                 for (int j = 0; j < ModCount; j++)
  94                         mymodnames.push_back(Config->module_names[j]);
  95
  96                 for (int k = 0; k < MyModCount; k++)
  97                         this->UnloadModule(mymodnames[k].c_str());
  98         }
  99
 100         /* Close all client sockets, or the new process inherits them */
 101         for (std::vector<userrec*>::const_iterator i = this->local_users.begin(); i != this->local_users.end(); i++)
 102                 (*i)->CloseSocket();
 103
 104         /* Figure out our filename (if theyve renamed it, we're boned) */
 105         std::string me = Config->MyDir + "/inspircd";
 106
 107         /* Close logging */
 108         this->Logger->Close();
 109
 110         if (execv(me.c_str(), Config->argv) == -1)
 111         {
 112                 /* Will raise a SIGABRT if not trapped */
 113                 throw CoreException(std::string("Failed to execv()! error: ") + strerror(errno));
 114         }
 115 }
 116
 117 void InspIRCd::Start()
 118 {
 119         printf("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
 120         printf("(C) InspIRCd Development Team.\033[0m\n\n");
 121         printf("Developers:\t\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special, pippijn, peavey\033[0m\n");
 122         printf("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
 123 }
 124
 125 void InspIRCd::Rehash(int status)
 126 {
 127         SI->WriteOpers("Rehashing config file %s due to SIGHUP",ServerConfig::CleanFilename(CONFIG_FILE));
 128         fclose(SI->Config->log_file);
 129         SI->OpenLog(NULL,0);
 130         SI->Config->Read(false,NULL);
 131         FOREACH_MOD_I(SI,I_OnRehash,OnRehash(""));
 132 }
 133
 134 void InspIRCd::SetSignals()
 135 {
 136         signal(SIGALRM, SIG_IGN);
 137         signal(SIGHUP, InspIRCd::Rehash);
 138         signal(SIGPIPE, SIG_IGN);
 139         signal(SIGTERM, InspIRCd::Exit);
 140         signal(SIGCHLD, SIG_IGN);
 141 }
 142
 143 bool InspIRCd::DaemonSeed()
 144 {
 145         int childpid;
 146         if ((childpid = fork ()) < 0)
 147                 return false;
 148         else if (childpid > 0)
 149         {
 150                 /* We wait here for the child process to kill us,
 151                  * so that the shell prompt doesnt come back over
 152                  * the output.
 153                  * Sending a kill with a signal of 0 just checks
 154                  * if the child pid is still around. If theyre not,
 155                  * they threw an error and we should give up.
 156                  */
 157                 while (kill(childpid, 0) != -1)
 158                         sleep(1);
 159                 exit(ERROR);
 160         }
 161         setsid ();
 162         umask (007);
 163         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 164
 165         rlimit rl;
 166         if (getrlimit(RLIMIT_CORE, &rl) == -1)
 167         {
 168                 this->Log(DEFAULT,"Failed to getrlimit()!");
 169                 return false;
 170         }
 171         else
 172         {
 173                 rl.rlim_cur = rl.rlim_max;
 174                 if (setrlimit(RLIMIT_CORE, &rl) == -1)
 175                         this->Log(DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 176         }
 177
 178         return true;
 179 }
 180
 181 void InspIRCd::WritePID(const std::string &filename)
 182 {
 183         std::string fname = (filename.empty() ? "inspircd.pid" : filename);
 184         if (*(fname.begin()) != '/')
 185         {
 186                 std::string::size_type pos;
 187                 std::string confpath = CONFIG_FILE;
 188                 if ((pos = confpath.find("/inspircd.conf")) != std::string::npos)
 189                 {
 190                         /* Leaves us with just the path */
 191                         fname = confpath.substr(0, pos) + std::string("/") + fname;
 192                 }
 193         }
 194         std::ofstream outfile(fname.c_str());
 195         if (outfile.is_open())
 196         {
 197                 outfile << getpid();
 198                 outfile.close();
 199         }
 200         else
 201         {
 202                 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
 203                 this->Log(DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
 204                 Exit(0);
 205         }
 206 }
 207
 208 std::string InspIRCd::GetRevision()
 209 {
 210         return REVISION;
 211 }
 212
 213 InspIRCd::InspIRCd(int argc, char** argv)
 214         : 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)
 215 {
 216         int found_ports = 0;
 217         FailedPortList pl;
 218
 219         modules.resize(255);
 220         factory.resize(255);
 221
 222         this->Config = new ServerConfig(this);
 223         this->Config->opertypes.clear();
 224         this->Config->operclass.clear();
 225         this->SNO = new SnomaskManager(this);
 226         this->Start();
 227         this->TIME = this->OLDTIME = this->startup_time = time(NULL);
 228         this->time_delta = 0;
 229         this->next_call = this->TIME + 3;
 230         srand(this->TIME);
 231         this->Log(DEBUG,"*** InspIRCd starting up!");
 232         if (!ServerConfig::FileExists(CONFIG_FILE))
 233         {
 234                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
 235                 this->Log(DEFAULT,"main: no config");
 236                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
 237                 Exit(ERROR);
 238         }
 239         *this->LogFileName = 0;
 240         if (argc > 1) {
 241                 for (int i = 1; i < argc; i++)
 242                 {
 243                         if (!strcmp(argv[i],"-nofork"))
 244                         {
 245                                 Config->nofork = true;
 246                         }
 247                         else if(!strcmp(argv[i],"-debug"))
 248                         {
 249                                 Config->forcedebug = true;
 250                         }
 251                         else if(!strcmp(argv[i],"-nolog"))
 252                         {
 253                                 Config->writelog = false;
 254                         }
 255                         else if (!strcmp(argv[i],"-wait"))
 256                         {
 257                                 sleep(6);
 258                         }
 259                         else if (!strcmp(argv[i],"-logfile"))
 260                         {
 261                                 if (argc > i+1)
 262                                 {
 263                                         strlcpy(LogFileName,argv[i+1],MAXBUF);
 264                                         printf("LOG: Setting logfile to %s\n",LogFileName);
 265                                 }
 266                                 else
 267                                 {
 268                                         printf("ERROR: The -logfile parameter must be followed by a log file name and path.\n");
 269                                         Exit(ERROR);
 270                                 }
 271                                 i++;
 272                         }
 273                         else
 274                         {
 275                                 printf("Usage: %s [-nofork] [-nolog] [-debug] [-wait] [-logfile <filename>]\n",argv[0]);
 276                                 Exit(ERROR);
 277                         }
 278                 }
 279         }
 280
 281         strlcpy(Config->MyExecutable,argv[0],MAXBUF);
 282
 283         this->OpenLog(argv, argc);
 284         this->stats = new serverstats();
 285         this->Parser = new CommandParser(this);
 286         this->Timers = new TimerManager();
 287         this->XLines = new XLineManager(this);
 288         Config->ClearStack();
 289         Config->Read(true, NULL);
 290         this->CheckRoot();
 291         this->Modes = new ModeParser(this);
 292         this->AddServerName(Config->ServerName);
 293         CheckDie();
 294         InitializeDisabledCommands(Config->DisabledCommands, this);
 295         stats->BoundPortCount = BindPorts(true, found_ports, pl);
 296
 297         for(int t = 0; t < 255; t++)
 298                 Config->global_implementation[t] = 0;
 299
 300         memset(&Config->implement_lists,0,sizeof(Config->implement_lists));
 301
 302         printf("\n");
 303         this->SetSignals();
 304         if (!Config->nofork)
 305         {
 306                 if (!this->DaemonSeed())
 307                 {
 308                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 309                         Exit(ERROR);
 310                 }
 311         }
 312
 313         /* Because of limitations in kqueue on freebsd, we must fork BEFORE we
 314          * initialize the socket engine.
 315          */
 316         SocketEngineFactory* SEF = new SocketEngineFactory();
 317         SE = SEF->Create(this);
 318         delete SEF;
 319
 320         this->Res = new DNS(this);
 321
 322         this->LoadAllModules();
 323         /* Just in case no modules were loaded - fix for bug #101 */
 324         this->BuildISupport();
 325
 326         if ((stats->BoundPortCount == 0) && (found_ports > 0))
 327         {
 328                 printf("\nERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?\n");
 329                 Exit(ERROR);
 330         }
 331
 332         if (stats->BoundPortCount != (unsigned int)found_ports)
 333         {
 334                 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);
 335                 printf("The following port%s failed to bind:\n", found_ports - stats->BoundPortCount != 1 ? "s" : "");
 336                 int j = 1;
 337                 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 338                 {
 339                         printf("%d.\tIP: %s\tPort: %lu\n", j, i->first.empty() ? "<all>" : i->first.c_str(), (unsigned long)i->second);
 340                 }
 341         }
 342
 343         /* Add the listening sockets used for client inbound connections
 344          * to the socket engine
 345          */
 346         this->Log(DEBUG,"%d listeners",stats->BoundPortCount);
 347         for (unsigned long count = 0; count < stats->BoundPortCount; count++)
 348         {
 349                 this->Log(DEBUG,"Add listener: %d",Config->openSockfd[count]->GetFd());
 350                 if (!SE->AddFd(Config->openSockfd[count]))
 351                 {
 352                         printf("\nEH? Could not add listener to socketengine. You screwed up, aborting.\n");
 353                         Exit(ERROR);
 354                 }
 355         }
 356
 357         if (!Config->nofork)
 358         {
 359                 if (kill(getppid(), SIGTERM) == -1)
 360                         printf("Error killing parent process: %s\n",strerror(errno));
 361                 fclose(stdin);
 362                 fclose(stderr);
 363                 fclose(stdout);
 364         }
 365
 366         printf("\nInspIRCd is now running!\n");
 367
 368         this->WritePID(Config->PID);
 369 }
 370
 371 std::string InspIRCd::GetVersionString()
 372 {
 373         char versiondata[MAXBUF];
 374         char dnsengine[] = "singlethread-object";
 375         if (*Config->CustomVersion)
 376         {
 377                 snprintf(versiondata,MAXBUF,"%s %s :%s",VERSION,Config->ServerName,Config->CustomVersion);
 378         }
 379         else
 380         {
 381                 snprintf(versiondata,MAXBUF,"%s %s :%s [FLAGS=%lu,%s,%s]",VERSION,Config->ServerName,SYSTEM,(unsigned long)OPTIMISATION,SE->GetName().c_str(),dnsengine);
 382         }
 383         return versiondata;
 384 }
 385
 386 char* InspIRCd::ModuleError()
 387 {
 388         return MODERR;
 389 }
 390
 391 void InspIRCd::EraseFactory(int j)
 392 {
 393         int v = 0;
 394         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
 395         {
 396                 if (v == j)
 397                 {
 398                         delete *t;
 399                         factory.erase(t);
 400                         factory.push_back(NULL);
 401                         return;
 402                 }
 403                 v++;
 404         }
 405 }
 406
 407 void InspIRCd::EraseModule(int j)
 408 {
 409         int v1 = 0;
 410         for (ModuleList::iterator m = modules.begin(); m!= modules.end(); m++)
 411         {
 412                 if (v1 == j)
 413                 {
 414                         DELETE(*m);
 415                         modules.erase(m);
 416                         modules.push_back(NULL);
 417                         break;
 418                 }
 419                 v1++;
 420         }
 421         int v2 = 0;
 422         for (std::vector<std::string>::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++)
 423         {
 424                 if (v2 == j)
 425                 {
 426                        Config->module_names.erase(v);
 427                        break;
 428                 }
 429                 v2++;
 430         }
 431
 432 }
 433
 434 void InspIRCd::MoveTo(std::string modulename,int slot)
 435 {
 436         unsigned int v2 = 256;
 437         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 438         {
 439                 if (Config->module_names[v] == modulename)
 440                 {
 441                         // found an instance, swap it with the item at the end
 442                         v2 = v;
 443                         break;
 444                 }
 445         }
 446         if ((v2 != (unsigned int)slot) && (v2 < 256))
 447         {
 448                 // Swap the module names over
 449                 Config->module_names[v2] = Config->module_names[slot];
 450                 Config->module_names[slot] = modulename;
 451                 // now swap the module factories
 452                 ircd_module* temp = factory[v2];
 453                 factory[v2] = factory[slot];
 454                 factory[slot] = temp;
 455                 // now swap the module objects
 456                 Module* temp_module = modules[v2];
 457                 modules[v2] = modules[slot];
 458                 modules[slot] = temp_module;
 459                 // now swap the implement lists (we dont
 460                 // need to swap the global or recount it)
 461                 for (int n = 0; n < 255; n++)
 462                 {
 463                         char x = Config->implement_lists[v2][n];
 464                         Config->implement_lists[v2][n] = Config->implement_lists[slot][n];
 465                         Config->implement_lists[slot][n] = x;
 466                 }
 467         }
 468         else
 469         {
 470                 this->Log(DEBUG,"Move of %s to slot failed!",modulename.c_str());
 471         }
 472 }
 473
 474 void InspIRCd::MoveAfter(std::string modulename, std::string after)
 475 {
 476         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 477         {
 478                 if (Config->module_names[v] == after)
 479                 {
 480                         MoveTo(modulename, v);
 481                         return;
 482                 }
 483         }
 484 }
 485
 486 void InspIRCd::MoveBefore(std::string modulename, std::string before)
 487 {
 488         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 489         {
 490                 if (Config->module_names[v] == before)
 491                 {
 492                         if (v > 0)
 493                         {
 494                                 MoveTo(modulename, v-1);
 495                         }
 496                         else
 497                         {
 498                                 MoveTo(modulename, v);
 499                         }
 500                         return;
 501                 }
 502         }
 503 }
 504
 505 void InspIRCd::MoveToFirst(std::string modulename)
 506 {
 507         MoveTo(modulename,0);
 508 }
 509
 510 void InspIRCd::MoveToLast(std::string modulename)
 511 {
 512         MoveTo(modulename,this->GetModuleCount());
 513 }
 514
 515 void InspIRCd::BuildISupport()
 516 {
 517         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
 518         std::stringstream v;
 519         v << "WALLCHOPS WALLVOICES MODES=" << MAXMODES << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << MAXCHANS << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1;
 520         v << " CASEMAPPING=rfc1459 STATUSMSG=@%+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets << " AWAYLEN=";
 521         v << MAXAWAY << " CHANMODES=" << this->Modes->ChanModes() << " FNC NETWORK=" << Config->Network << " MAXPARA=32";
 522         Config->data005 = v.str();
 523         FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
 524         Config->Update005();
 525 }
 526
 527 bool InspIRCd::UnloadModule(const char* filename)
 528 {
 529         std::string filename_str = filename;
 530         for (unsigned int j = 0; j != Config->module_names.size(); j++)
 531         {
 532                 if (Config->module_names[j] == filename_str)
 533                 {
 534                         if (modules[j]->GetVersion().Flags & VF_STATIC)
 535                         {
 536                                 this->Log(DEFAULT,"Failed to unload STATIC module %s",filename);
 537                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
 538                                 return false;
 539                         }
 540                         std::pair<int,std::string> intercount = GetInterfaceInstanceCount(modules[j]);
 541                         if (intercount.first > 0)
 542                         {
 543                                 this->Log(DEFAULT,"Failed to unload module %s, being used by %d other(s) via interface '%s'",filename, intercount.first, intercount.second.c_str());
 544                                 snprintf(MODERR,MAXBUF,"Module not unloadable (Still in use by %d other module%s which %s using its interface '%s') -- unload dependent modules first!",
 545                                                 intercount.first,
 546                                                 intercount.first > 1 ? "s" : "",
 547                                                 intercount.first > 1 ? "are" : "is",
 548                                                 intercount.second.c_str());
 549                                 return false;
 550                         }
 551                         /* Give the module a chance to tidy out all its metadata */
 552                         for (chan_hash::iterator c = this->chanlist.begin(); c != this->chanlist.end(); c++)
 553                         {
 554                                 modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
 555                         }
 556                         for (user_hash::iterator u = this->clientlist.begin(); u != this->clientlist.end(); u++)
 557                         {
 558                                 modules[j]->OnCleanup(TYPE_USER,u->second);
 559                         }
 560
 561                         /* Tidy up any dangling resolvers */
 562                         this->Res->CleanResolvers(modules[j]);
 563
 564                         FOREACH_MOD_I(this,I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j]));
 565
 566                         for(int t = 0; t < 255; t++)
 567                         {
 568                                 Config->global_implementation[t] -= Config->implement_lists[j][t];
 569                         }
 570
 571                         /* We have to renumber implement_lists after unload because the module numbers change!
 572                          */
 573                         for(int j2 = j; j2 < 254; j2++)
 574                         {
 575                                 for(int t = 0; t < 255; t++)
 576                                 {
 577                                         Config->implement_lists[j2][t] = Config->implement_lists[j2+1][t];
 578                                 }
 579                         }
 580
 581                         // found the module
 582                         Parser->RemoveCommands(filename);
 583                         this->EraseModule(j);
 584                         this->EraseFactory(j);
 585                         this->Log(DEFAULT,"Module %s unloaded",filename);
 586                         this->ModCount--;
 587                         BuildISupport();
 588                         return true;
 589                 }
 590         }
 591         this->Log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
 592         snprintf(MODERR,MAXBUF,"Module not loaded");
 593         return false;
 594 }
 595
 596 bool InspIRCd::LoadModule(const char* filename)
 597 {
 598         /* Do we have a glob pattern in the filename?
 599          * The user wants to load multiple modules which
 600          * match the pattern.
 601          */
 602         if (strchr(filename,'*') || (strchr(filename,'?')))
 603         {
 604                 int n_match = 0;
 605                 DIR* library = opendir(Config->ModPath);
 606                 if (library)
 607                 {
 608                         /* Try and locate and load all modules matching the pattern */
 609                         dirent* entry = NULL;
 610                         while ((entry = readdir(library)))
 611                         {
 612                                 if (this->MatchText(entry->d_name, filename))
 613                                 {
 614                                         if (!this->LoadModule(entry->d_name))
 615                                                 n_match++;
 616                                 }
 617                         }
 618                         closedir(library);
 619                 }
 620                 /* Loadmodule will now return false if any one of the modules failed
 621                  * to load (but wont abort when it encounters a bad one) and when 1 or
 622                  * more modules were actually loaded.
 623                  */
 624                 return (n_match > 0);
 625         }
 626
 627         char modfile[MAXBUF];
 628         snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
 629         std::string filename_str = filename;
 630
 631         if (!ServerConfig::DirValid(modfile))
 632         {
 633                 this->Log(DEFAULT,"Module %s is not within the modules directory.",modfile);
 634                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
 635                 return false;
 636         }
 637         this->Log(DEBUG,"Loading module: %s",modfile);
 638
 639         if (ServerConfig::FileExists(modfile))
 640         {
 641
 642                 for (unsigned int j = 0; j < Config->module_names.size(); j++)
 643                 {
 644                         if (Config->module_names[j] == filename_str)
 645                         {
 646                                 this->Log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
 647                                 snprintf(MODERR,MAXBUF,"Module already loaded");
 648                                 return false;
 649                         }
 650                 }
 651                 try
 652                 {
 653                         ircd_module* a = new ircd_module(this, modfile);
 654                         factory[this->ModCount+1] = a;
 655                         if (factory[this->ModCount+1]->LastError())
 656                         {
 657                                 this->Log(DEFAULT,"Unable to load %s: %s",modfile,factory[this->ModCount+1]->LastError());
 658                                 snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[this->ModCount+1]->LastError());
 659                                 return false;
 660                         }
 661                         if ((long)factory[this->ModCount+1]->factory != -1)
 662                         {
 663                                 Module* m = factory[this->ModCount+1]->factory->CreateModule(this);
 664
 665                                 Version v = m->GetVersion();
 666
 667                                 if (v.API != API_VERSION)
 668                                 {
 669                                         delete m;
 670                                         delete a;
 671                                         this->Log(DEFAULT,"Unable to load %s: Incorrect module API version: %d (our version: %d)",modfile,v.API,API_VERSION);
 672                                         snprintf(MODERR,MAXBUF,"Loader/Linker error: Incorrect module API version: %d (our version: %d)",v.API,API_VERSION);
 673                                         return false;
 674                                 }
 675                                 else
 676                                 {
 677                                         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]"));
 678                                 }
 679
 680                                 modules[this->ModCount+1] = m;
 681                                 /* save the module and the module's classfactory, if
 682                                  * this isnt done, random crashes can occur :/ */
 683                                 Config->module_names.push_back(filename);
 684
 685                                 char* x = &Config->implement_lists[this->ModCount+1][0];
 686                                 for(int t = 0; t < 255; t++)
 687                                         x[t] = 0;
 688
 689                                 modules[this->ModCount+1]->Implements(x);
 690
 691                                 for(int t = 0; t < 255; t++)
 692                                         Config->global_implementation[t] += Config->implement_lists[this->ModCount+1][t];
 693                         }
 694                         else
 695                         {
 696                                 this->Log(DEFAULT,"Unable to load %s",modfile);
 697                                 snprintf(MODERR,MAXBUF,"Factory function failed: Probably missing init_module() entrypoint.");
 698                                 return false;
 699                         }
 700                 }
 701                 catch (CoreException& modexcept)
 702                 {
 703                         this->Log(DEFAULT,"Unable to load %s: ",modfile,modexcept.GetReason());
 704                         snprintf(MODERR,MAXBUF,"Factory function of %s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 705                         return false;
 706                 }
 707         }
 708         else
 709         {
 710                 this->Log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
 711                 snprintf(MODERR,MAXBUF,"Module file could not be found");
 712                 return false;
 713         }
 714         this->ModCount++;
 715         FOREACH_MOD_I(this,I_OnLoadModule,OnLoadModule(modules[this->ModCount],filename_str));
 716         // now work out which modules, if any, want to move to the back of the queue,
 717         // and if they do, move them there.
 718         std::vector<std::string> put_to_back;
 719         std::vector<std::string> put_to_front;
 720         std::map<std::string,std::string> put_before;
 721         std::map<std::string,std::string> put_after;
 722         for (unsigned int j = 0; j < Config->module_names.size(); j++)
 723         {
 724                 if (modules[j]->Prioritize() == PRIORITY_LAST)
 725                         put_to_back.push_back(Config->module_names[j]);
 726                 else if (modules[j]->Prioritize() == PRIORITY_FIRST)
 727                         put_to_front.push_back(Config->module_names[j]);
 728                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_BEFORE)
 729                         put_before[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 730                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_AFTER)
 731                         put_after[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 732         }
 733         for (unsigned int j = 0; j < put_to_back.size(); j++)
 734                 MoveToLast(put_to_back[j]);
 735         for (unsigned int j = 0; j < put_to_front.size(); j++)
 736                 MoveToFirst(put_to_front[j]);
 737         for (std::map<std::string,std::string>::iterator j = put_before.begin(); j != put_before.end(); j++)
 738                 MoveBefore(j->first,j->second);
 739         for (std::map<std::string,std::string>::iterator j = put_after.begin(); j != put_after.end(); j++)
 740                 MoveAfter(j->first,j->second);
 741         BuildISupport();
 742         return true;
 743 }
 744
 745 void InspIRCd::DoOneIteration(bool process_module_sockets)
 746 {
 747         static rusage ru;
 748
 749         /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 750          * Once per loop iteration is pleanty.
 751          */
 752         OLDTIME = TIME;
 753         TIME = time(NULL);
 754
 755         /* Run background module timers every few seconds
 756          * (the docs say modules shouldnt rely on accurate
 757          * timing using this event, so we dont have to
 758          * time this exactly).
 759          */
 760         if (TIME != OLDTIME)
 761         {
 762                 if (TIME < OLDTIME)
 763                         WriteOpers("*** \002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %d secs.",abs(OLDTIME-TIME));
 764                 if ((TIME % 3600) == 0)
 765                 {
 766                         irc::whowas::MaintainWhoWas(this, TIME);
 767                 }
 768                 Timers->TickTimers(TIME);
 769                 this->DoBackgroundUserStuff(TIME);
 770
 771                 if ((TIME % 5) == 0)
 772                 {
 773                         XLines->expire_lines();
 774                         FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 775                         Timers->TickMissedTimers(TIME);
 776                 }
 777
 778                 if (!getrusage(0, &ru))
 779                 {
 780                         gettimeofday(&this->stats->LastSampled, NULL);
 781                         this->stats->LastCPU = ru.ru_utime;
 782                 }
 783         }
 784
 785         /* Call the socket engine to wait on the active
 786          * file descriptors. The socket engine has everything's
 787          * descriptors in its list... dns, modules, users,
 788          * servers... so its nice and easy, just one call.
 789          * This will cause any read or write events to be
 790          * dispatched to their handlers.
 791          */
 792         SE->DispatchEvents();
 793 }
 794
 795 bool InspIRCd::IsIdent(const char* n)
 796 {
 797         if (!n || !*n)
 798                 return false;
 799
 800         for (char* i = (char*)n; *i; i++)
 801         {
 802                 if ((*i >= 'A') && (*i <= '}'))
 803                 {
 804                         continue;
 805                 }
 806                 if (((*i >= '0') && (*i <= '9')) || (*i == '-') || (*i == '.'))
 807                 {
 808                         continue;
 809                 }
 810                 return false;
 811         }
 812         return true;
 813 }
 814
 815
 816 int InspIRCd::Run()
 817 {
 818         while (true)
 819         {
 820                 DoOneIteration(true);
 821         }
 822         /* This is never reached -- we hope! */
 823         return 0;
 824 }
 825
 826 /**********************************************************************************/
 827
 828 /**
 829  * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
 830  */
 831
 832 int main(int argc, char** argv)
 833 {
 834         SI = new InspIRCd(argc, argv);
 835         SI->Run();
 836         delete SI;
 837         return 0;
 838 }
 839
 840 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 841  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 842  * registration timeout maximum seconds)
 843  */
 844 bool InspIRCd::AllModulesReportReady(userrec* user)
 845 {
 846         if (!Config->global_implementation[I_OnCheckReady])
 847                 return true;
 848
 849         for (int i = 0; i <= this->GetModuleCount(); i++)
 850         {
 851                 if (Config->implement_lists[i][I_OnCheckReady])
 852                 {
 853                         int res = modules[i]->OnCheckReady(user);
 854                         if (!res)
 855                                 return false;
 856                 }
 857         }
 858         return true;
 859 }
 860
 861 int InspIRCd::GetModuleCount()
 862 {
 863         return this->ModCount;
 864 }
 865
 866 time_t InspIRCd::Time(bool delta)
 867 {
 868         if (delta)
 869                 return TIME + time_delta;
 870         return TIME;
 871 }
 872
 873 int InspIRCd::SetTimeDelta(int delta)
 874 {
 875         int old = time_delta;
 876         time_delta += delta;
 877         this->Log(DEBUG, "Time delta set to %d (was %d)", time_delta, old);
 878         return old;
 879 }
 880
 881 void InspIRCd::AddLocalClone(userrec* user)
 882 {
 883         clonemap::iterator x = local_clones.find(user->GetIPString());
 884         if (x != local_clones.end())
 885                 x->second++;
 886         else
 887                 local_clones[user->GetIPString()] = 1;
 888 }
 889
 890 void InspIRCd::AddGlobalClone(userrec* user)
 891 {
 892         clonemap::iterator y = global_clones.find(user->GetIPString());
 893         if (y != global_clones.end())
 894                 y->second++;
 895         else
 896                 global_clones[user->GetIPString()] = 1;
 897 }
 898
 899 int InspIRCd::GetTimeDelta()
 900 {
 901         return time_delta;
 902 }
 903
 904 bool FileLogger::Readable()
 905 {
 906         return false;
 907 }
 908
 909 void FileLogger::HandleEvent(EventType et, int errornum)
 910 {
 911         this->WriteLogLine("");
 912         ServerInstance->SE->DelFd(this);
 913 }
 914
 915 void FileLogger::WriteLogLine(const std::string &line)
 916 {
 917         if (line.length())
 918                 buffer.append(line);
 919
 920         if (log)
 921         {
 922                 int written = fprintf(log,"%s",buffer.c_str());
 923                 if ((written >= 0) && (written < (int)buffer.length()))
 924                 {
 925                         buffer.erase(0, buffer.length());
 926                         ServerInstance->SE->AddFd(this);
 927                 }
 928                 else if (written == -1)
 929                 {
 930                         if (errno == EAGAIN)
 931                                 ServerInstance->SE->AddFd(this);
 932                 }
 933                 else
 934                 {
 935                         /* Wrote the whole buffer, and no need for write callback */
 936                         buffer = "";
 937                 }
 938         }
 939         if (writeops++ % 20)
 940         {
 941                 fflush(log);
 942         }
 943 }
 944
 945 void FileLogger::Close()
 946 {
 947         if (log)
 948         {
 949                 int flags = fcntl(fileno(log), F_GETFL, 0);
 950                 fcntl(fileno(log), F_SETFL, flags ^ O_NONBLOCK);
 951                 if (buffer.size())
 952                         fprintf(log,"%s",buffer.c_str());
 953                 fflush(log);
 954                 fclose(log);
 955         }
 956         buffer = "";
 957         ServerInstance->SE->DelFd(this);
 958 }
 959
 960 FileLogger::FileLogger(InspIRCd* Instance, FILE* logfile) : ServerInstance(Instance), log(logfile), writeops(0)
 961 {
 962         irc::sockets::NonBlocking(fileno(log));
 963         this->SetFd(fileno(log));
 964         buffer = "";
 965 }
 966
 967 FileLogger::~FileLogger()
 968 {
 969         this->Close();
 970 }
 971