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 <unistd.h>
  21 #include "modules.h"
  22 #include "mode.h"
  23 #include "xline.h"
  24 #include "socketengine.h"
  25 #include "inspircd_se_config.h"
  26 #include "socket.h"
  27 #include "typedefs.h"
  28 #include "command_parse.h"
  29 #include "exitcodes.h"
  30 #include <dlfcn.h>
  31 #include <getopt.h>
  32
  33
  34 using irc::sockets::NonBlocking;
  35 using irc::sockets::Blocking;
  36 using irc::sockets::insp_ntoa;
  37 using irc::sockets::insp_inaddr;
  38 using irc::sockets::insp_sockaddr;
  39
  40 InspIRCd* SI = NULL;
  41
  42 void InspIRCd::AddServerName(const std::string &servername)
  43 {
  44         if(find(servernames.begin(), servernames.end(), servername) == servernames.end())
  45                 servernames.push_back(servername); /* Wasn't already there. */
  46 }
  47
  48 const char* InspIRCd::FindServerNamePtr(const std::string &servername)
  49 {
  50         servernamelist::iterator iter = find(servernames.begin(), servernames.end(), servername);
  51
  52         if(iter == servernames.end())
  53         {
  54                 AddServerName(servername);
  55                 iter = --servernames.end();
  56         }
  57
  58         return iter->c_str();
  59 }
  60
  61 bool InspIRCd::FindServerName(const std::string &servername)
  62 {
  63         return (find(servernames.begin(), servernames.end(), servername) != servernames.end());
  64 }
  65
  66 void InspIRCd::Exit(int status)
  67 {
  68         if (SI)
  69         {
  70                 SI->SendError("Exiting with status " + ConvToStr(status) + " (" + std::string(ExitCodes[status]) + ")");
  71                 SI->Cleanup();
  72         }
  73         exit (status);
  74 }
  75
  76 void InspIRCd::Cleanup()
  77 {
  78         std::vector<std::string> mymodnames;
  79         int MyModCount = this->GetModuleCount();
  80
  81         for (unsigned int i = 0; i < stats->BoundPortCount; i++)
  82         {
  83                 /* This calls the constructor and closes the listening socket */
  84                 delete Config->openSockfd[i];
  85                 Config->openSockfd[i] = NULL;
  86         }
  87         stats->BoundPortCount = 0;
  88
  89         /* Close all client sockets, or the new process inherits them */
  90         for (std::vector<userrec*>::const_iterator i = this->local_users.begin(); i != this->local_users.end(); i++)
  91         {
  92                 (*i)->SetWriteError("Server shutdown");
  93                 (*i)->CloseSocket();
  94         }
  95
  96         /* We do this more than once, so that any service providers get a
  97          * chance to be unhooked by the modules using them, but then get
  98          * a chance to be removed themsleves.
  99          */
 100         for (int tries = 0; tries < 3; tries++)
 101         {
 102                 MyModCount = this->GetModuleCount();
 103                 mymodnames.clear();
 104
 105                 /* Unload all modules, so they get a chance to clean up their listeners */
 106                 for (int j = 0; j <= MyModCount; j++)
 107                         mymodnames.push_back(Config->module_names[j]);
 108
 109                 for (int k = 0; k <= MyModCount; k++)
 110                         this->UnloadModule(mymodnames[k].c_str());
 111         }
 112
 113         /* Close logging */
 114         this->Logger->Close();
 115 }
 116
 117 void InspIRCd::Restart(const std::string &reason)
 118 {
 119         /* SendError flushes each client's queue,
 120          * regardless of writeability state
 121          */
 122         this->SendError(reason);
 123
 124         this->Cleanup();
 125
 126         /* Figure out our filename (if theyve renamed it, we're boned) */
 127         std::string me = Config->MyDir + "/inspircd";
 128
 129         if (execv(me.c_str(), Config->argv) == -1)
 130         {
 131                 /* Will raise a SIGABRT if not trapped */
 132                 throw CoreException(std::string("Failed to execv()! error: ") + strerror(errno));
 133         }
 134 }
 135
 136 void InspIRCd::Start()
 137 {
 138         printf("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
 139         printf("(C) InspIRCd Development Team.\033[0m\n\n");
 140         printf("Developers:\t\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special, pippijn, peavey\033[0m\n");
 141         printf("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
 142 }
 143
 144 void InspIRCd::Rehash(int status)
 145 {
 146         SI->WriteOpers("*** Rehashing config file %s due to SIGHUP",ServerConfig::CleanFilename(CONFIG_FILE));
 147         SI->CloseLog();
 148         SI->OpenLog(SI->Config->argv, SI->Config->argc);
 149         SI->RehashUsersAndChans();
 150         FOREACH_MOD_I(SI, I_OnGarbageCollect, OnGarbageCollect());
 151         SI->Config->Read(false,NULL);
 152         SI->ResetMaxBans();
 153         SI->Res->Rehash();
 154         SI->BuildISupport();
 155         FOREACH_MOD_I(SI,I_OnRehash,OnRehash(NULL,""));
 156 }
 157
 158 void InspIRCd::ResetMaxBans()
 159 {
 160         for (chan_hash::const_iterator i = chanlist->begin(); i != chanlist->end(); i++)
 161                 i->second->ResetMaxBans();
 162 }
 163
 164
 165 /** Because hash_map doesnt free its buckets when we delete items (this is a 'feature')
 166  * we must occasionally rehash the hash (yes really).
 167  * We do this by copying the entries from the old hash to a new hash, causing all
 168  * empty buckets to be weeded out of the hash. We dont do this on a timer, as its
 169  * very expensive, so instead we do it when the user types /REHASH and expects a
 170  * short delay anyway.
 171  */
 172 void InspIRCd::RehashUsersAndChans()
 173 {
 174         user_hash* old_users = this->clientlist;
 175         chan_hash* old_chans = this->chanlist;
 176
 177         this->clientlist = new user_hash();
 178         this->chanlist = new chan_hash();
 179
 180         for (user_hash::const_iterator n = old_users->begin(); n != old_users->end(); n++)
 181                 this->clientlist->insert(*n);
 182
 183         delete old_users;
 184
 185         for (chan_hash::const_iterator n = old_chans->begin(); n != old_chans->end(); n++)
 186                 this->chanlist->insert(*n);
 187
 188         delete old_chans;
 189 }
 190
 191 void InspIRCd::CloseLog()
 192 {
 193         this->Logger->Close();
 194 }
 195
 196 void InspIRCd::SetSignals()
 197 {
 198         signal(SIGALRM, SIG_IGN);
 199         signal(SIGHUP, InspIRCd::Rehash);
 200         signal(SIGPIPE, SIG_IGN);
 201         signal(SIGTERM, InspIRCd::Exit);
 202         signal(SIGCHLD, SIG_IGN);
 203 }
 204
 205 bool InspIRCd::DaemonSeed()
 206 {
 207         int childpid;
 208         if ((childpid = fork ()) < 0)
 209                 return false;
 210         else if (childpid > 0)
 211         {
 212                 /* We wait here for the child process to kill us,
 213                  * so that the shell prompt doesnt come back over
 214                  * the output.
 215                  * Sending a kill with a signal of 0 just checks
 216                  * if the child pid is still around. If theyre not,
 217                  * they threw an error and we should give up.
 218                  */
 219                 while (kill(childpid, 0) != -1)
 220                         sleep(1);
 221                 exit(0);
 222         }
 223         setsid ();
 224         umask (007);
 225         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 226
 227         rlimit rl;
 228         if (getrlimit(RLIMIT_CORE, &rl) == -1)
 229         {
 230                 this->Log(DEFAULT,"Failed to getrlimit()!");
 231                 return false;
 232         }
 233         else
 234         {
 235                 rl.rlim_cur = rl.rlim_max;
 236                 if (setrlimit(RLIMIT_CORE, &rl) == -1)
 237                         this->Log(DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 238         }
 239
 240         return true;
 241 }
 242
 243 void InspIRCd::WritePID(const std::string &filename)
 244 {
 245         std::string fname = (filename.empty() ? "inspircd.pid" : filename);
 246         if (*(fname.begin()) != '/')
 247         {
 248                 std::string::size_type pos;
 249                 std::string confpath = CONFIG_FILE;
 250                 if ((pos = confpath.find("/inspircd.conf")) != std::string::npos)
 251                 {
 252                         /* Leaves us with just the path */
 253                         fname = confpath.substr(0, pos) + std::string("/") + fname;
 254                 }
 255         }
 256         std::ofstream outfile(fname.c_str());
 257         if (outfile.is_open())
 258         {
 259                 outfile << getpid();
 260                 outfile.close();
 261         }
 262         else
 263         {
 264                 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
 265                 this->Log(DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
 266                 Exit(EXIT_STATUS_PID);
 267         }
 268 }
 269
 270 std::string InspIRCd::GetRevision()
 271 {
 272         return REVISION;
 273 }
 274
 275 InspIRCd::InspIRCd(int argc, char** argv)
 276         : 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), GlobalCulls(this)
 277 {
 278         int found_ports = 0;
 279         FailedPortList pl;
 280         int do_nofork = 0, do_debug = 0, do_nolog = 0;    /* flag variables */
 281         char c = 0;
 282
 283         modules.resize(255);
 284         factory.resize(255);
 285
 286         this->unregistered_count = 0;
 287
 288         this->clientlist = new user_hash();
 289         this->chanlist = new chan_hash();
 290
 291         this->Config = new ServerConfig(this);
 292
 293         this->Config->argv = argv;
 294         this->Config->argc = argc;
 295
 296         this->Config->opertypes.clear();
 297         this->Config->operclass.clear();
 298         this->SNO = new SnomaskManager(this);
 299         this->Start();
 300         this->TIME = this->OLDTIME = this->startup_time = time(NULL);
 301         this->time_delta = 0;
 302         this->next_call = this->TIME + 3;
 303         srand(this->TIME);
 304
 305         if (!ServerConfig::FileExists(CONFIG_FILE))
 306         {
 307                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
 308                 this->Log(DEFAULT,"main: no config");
 309                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
 310                 Exit(EXIT_STATUS_CONFIG);
 311         }
 312
 313         *this->LogFileName = 0;
 314
 315         struct option longopts[] =
 316         {
 317                 { "nofork",     no_argument,            &do_nofork,     1       },
 318                 { "logfile",    required_argument,      NULL,           'f'     },
 319                 { "debug",      no_argument,            &do_debug,      1       },
 320                 { "nolog",      no_argument,            &do_nolog,      1       },
 321                 { 0, 0, 0, 0 }
 322         };
 323
 324         while ((c = getopt_long_only(argc, argv, ":f:", longopts, NULL)) != -1)
 325         {
 326                 switch (c)
 327                 {
 328                         case 'f':
 329                                 /* Log filename was set */
 330                                 strlcpy(LogFileName, optarg, MAXBUF);
 331                                 printf("LOG: Setting logfile to %s\n", LogFileName);
 332                         break;
 333                         case 0:
 334                                 /* getopt_long_only() set an int variable, just keep going */
 335                         break;
 336                         default:
 337                                 /* Unknown parameter! DANGER, INTRUDER.... err.... yeah. */
 338                                 printf("Usage: %s [--nofork] [--nolog] [--debug] [--logfile <filename>]\n", argv[0]);
 339                                 Exit(EXIT_STATUS_ARGV);
 340                         break;
 341                 }
 342         }
 343
 344         /* Set the finished argument values */
 345         Config->nofork = do_nofork;
 346         Config->forcedebug = do_debug;
 347         Config->writelog = !do_nolog;
 348
 349         strlcpy(Config->MyExecutable,argv[0],MAXBUF);
 350
 351         this->OpenLog(argv, argc);
 352         this->stats = new serverstats();
 353         this->Timers = new TimerManager(this);
 354         this->Parser = new CommandParser(this);
 355         this->XLines = new XLineManager(this);
 356         Config->ClearStack();
 357         Config->Read(true, NULL);
 358         this->CheckRoot();
 359         this->Modes = new ModeParser(this);
 360         this->AddServerName(Config->ServerName);
 361         CheckDie();
 362         InitializeDisabledCommands(Config->DisabledCommands, this);
 363         stats->BoundPortCount = BindPorts(true, found_ports, pl);
 364
 365         for(int t = 0; t < 255; t++)
 366                 Config->global_implementation[t] = 0;
 367
 368         memset(&Config->implement_lists,0,sizeof(Config->implement_lists));
 369
 370         printf("\n");
 371         this->SetSignals();
 372         if (!Config->nofork)
 373         {
 374                 if (!this->DaemonSeed())
 375                 {
 376                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 377                         Exit(EXIT_STATUS_FORK);
 378                 }
 379         }
 380
 381         /* Because of limitations in kqueue on freebsd, we must fork BEFORE we
 382          * initialize the socket engine.
 383          */
 384         SocketEngineFactory* SEF = new SocketEngineFactory();
 385         SE = SEF->Create(this);
 386         delete SEF;
 387
 388         this->Res = new DNS(this);
 389
 390         this->LoadAllModules();
 391         /* Just in case no modules were loaded - fix for bug #101 */
 392         this->BuildISupport();
 393
 394         if ((stats->BoundPortCount == 0) && (found_ports > 0))
 395         {
 396                 printf("\nERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?\n");
 397                 Exit(EXIT_STATUS_BIND);
 398         }
 399
 400         if (stats->BoundPortCount != (unsigned int)found_ports)
 401         {
 402                 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);
 403                 printf("The following port%s failed to bind:\n", found_ports - stats->BoundPortCount != 1 ? "s" : "");
 404                 int j = 1;
 405                 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 406                 {
 407                         printf("%d.\tIP: %s\tPort: %lu\n", j, i->first.empty() ? "<all>" : i->first.c_str(), (unsigned long)i->second);
 408                 }
 409         }
 410
 411         /* Add the listening sockets used for client inbound connections
 412          * to the socket engine
 413          */
 414         for (unsigned long count = 0; count < stats->BoundPortCount; count++)
 415         {
 416                 if (!SE->AddFd(Config->openSockfd[count]))
 417                 {
 418                         printf("\nEH? Could not add listener to socketengine. You screwed up, aborting.\n");
 419                         Exit(EXIT_STATUS_INTERNAL);
 420                 }
 421         }
 422
 423         if (!Config->nofork)
 424         {
 425                 if (kill(getppid(), SIGTERM) == -1)
 426                         printf("Error killing parent process: %s\n",strerror(errno));
 427                 fclose(stdin);
 428                 fclose(stderr);
 429                 fclose(stdout);
 430         }
 431
 432         printf("\nInspIRCd is now running!\n");
 433
 434         this->WritePID(Config->PID);
 435 }
 436
 437 std::string InspIRCd::GetVersionString()
 438 {
 439         char versiondata[MAXBUF];
 440         char dnsengine[] = "singlethread-object";
 441         if (*Config->CustomVersion)
 442         {
 443                 snprintf(versiondata,MAXBUF,"%s %s :%s",VERSION,Config->ServerName,Config->CustomVersion);
 444         }
 445         else
 446         {
 447                 snprintf(versiondata,MAXBUF,"%s %s :%s [FLAGS=%s,%s,%s]",VERSION,Config->ServerName,SYSTEM,REVISION,SE->GetName().c_str(),dnsengine);
 448         }
 449         return versiondata;
 450 }
 451
 452 char* InspIRCd::ModuleError()
 453 {
 454         return MODERR;
 455 }
 456
 457 void InspIRCd::EraseFactory(int j)
 458 {
 459         int v = 0;
 460         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
 461         {
 462                 if (v == j)
 463                 {
 464                         delete *t;
 465                         factory.erase(t);
 466                         factory.push_back(NULL);
 467                         return;
 468                 }
 469                 v++;
 470         }
 471 }
 472
 473 void InspIRCd::EraseModule(int j)
 474 {
 475         int v1 = 0;
 476         for (ModuleList::iterator m = modules.begin(); m!= modules.end(); m++)
 477         {
 478                 if (v1 == j)
 479                 {
 480                         DELETE(*m);
 481                         modules.erase(m);
 482                         modules.push_back(NULL);
 483                         break;
 484                 }
 485                 v1++;
 486         }
 487         int v2 = 0;
 488         for (std::vector<std::string>::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++)
 489         {
 490                 if (v2 == j)
 491                 {
 492                        Config->module_names.erase(v);
 493                        break;
 494                 }
 495                 v2++;
 496         }
 497
 498 }
 499
 500 void InspIRCd::MoveTo(std::string modulename,int slot)
 501 {
 502         unsigned int v2 = 256;
 503         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 504         {
 505                 if (Config->module_names[v] == modulename)
 506                 {
 507                         // found an instance, swap it with the item at the end
 508                         v2 = v;
 509                         break;
 510                 }
 511         }
 512         if ((v2 != (unsigned int)slot) && (v2 < 256))
 513         {
 514                 // Swap the module names over
 515                 Config->module_names[v2] = Config->module_names[slot];
 516                 Config->module_names[slot] = modulename;
 517                 // now swap the module factories
 518                 ircd_module* temp = factory[v2];
 519                 factory[v2] = factory[slot];
 520                 factory[slot] = temp;
 521                 // now swap the module objects
 522                 Module* temp_module = modules[v2];
 523                 modules[v2] = modules[slot];
 524                 modules[slot] = temp_module;
 525                 // now swap the implement lists (we dont
 526                 // need to swap the global or recount it)
 527                 for (int n = 0; n < 255; n++)
 528                 {
 529                         char x = Config->implement_lists[v2][n];
 530                         Config->implement_lists[v2][n] = Config->implement_lists[slot][n];
 531                         Config->implement_lists[slot][n] = x;
 532                 }
 533         }
 534 }
 535
 536 void InspIRCd::MoveAfter(std::string modulename, std::string after)
 537 {
 538         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 539         {
 540                 if (Config->module_names[v] == after)
 541                 {
 542                         MoveTo(modulename, v);
 543                         return;
 544                 }
 545         }
 546 }
 547
 548 void InspIRCd::MoveBefore(std::string modulename, std::string before)
 549 {
 550         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 551         {
 552                 if (Config->module_names[v] == before)
 553                 {
 554                         if (v > 0)
 555                         {
 556                                 MoveTo(modulename, v-1);
 557                         }
 558                         else
 559                         {
 560                                 MoveTo(modulename, v);
 561                         }
 562                         return;
 563                 }
 564         }
 565 }
 566
 567 void InspIRCd::MoveToFirst(std::string modulename)
 568 {
 569         MoveTo(modulename,0);
 570 }
 571
 572 void InspIRCd::MoveToLast(std::string modulename)
 573 {
 574         MoveTo(modulename,this->GetModuleCount());
 575 }
 576
 577 void InspIRCd::BuildISupport()
 578 {
 579         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
 580         std::stringstream v;
 581         v << "WALLCHOPS WALLVOICES MODES=" << MAXMODES << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << Config->MaxChans << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1;
 582         v << " CASEMAPPING=rfc1459 STATUSMSG=@%+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets << " AWAYLEN=";
 583         v << MAXAWAY << " CHANMODES=" << this->Modes->ChanModes() << " FNC NETWORK=" << Config->Network << " MAXPARA=32";
 584         Config->data005 = v.str();
 585         FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
 586         Config->Update005();
 587 }
 588
 589 bool InspIRCd::UnloadModule(const char* filename)
 590 {
 591         std::string filename_str = filename;
 592         for (unsigned int j = 0; j != Config->module_names.size(); j++)
 593         {
 594                 if (Config->module_names[j] == filename_str)
 595                 {
 596                         if (modules[j]->GetVersion().Flags & VF_STATIC)
 597                         {
 598                                 this->Log(DEFAULT,"Failed to unload STATIC module %s",filename);
 599                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
 600                                 return false;
 601                         }
 602                         std::pair<int,std::string> intercount = GetInterfaceInstanceCount(modules[j]);
 603                         if (intercount.first > 0)
 604                         {
 605                                 this->Log(DEFAULT,"Failed to unload module %s, being used by %d other(s) via interface '%s'",filename, intercount.first, intercount.second.c_str());
 606                                 snprintf(MODERR,MAXBUF,"Module not unloadable (Still in use by %d other module%s which %s using its interface '%s') -- unload dependent modules first!",
 607                                                 intercount.first,
 608                                                 intercount.first > 1 ? "s" : "",
 609                                                 intercount.first > 1 ? "are" : "is",
 610                                                 intercount.second.c_str());
 611                                 return false;
 612                         }
 613                         /* Give the module a chance to tidy out all its metadata */
 614                         for (chan_hash::iterator c = this->chanlist->begin(); c != this->chanlist->end(); c++)
 615                         {
 616                                 modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
 617                         }
 618                         for (user_hash::iterator u = this->clientlist->begin(); u != this->clientlist->end(); u++)
 619                         {
 620                                 modules[j]->OnCleanup(TYPE_USER,u->second);
 621                         }
 622
 623                         /* Tidy up any dangling resolvers */
 624                         this->Res->CleanResolvers(modules[j]);
 625
 626                         FOREACH_MOD_I(this,I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j]));
 627
 628                         for(int t = 0; t < 255; t++)
 629                         {
 630                                 Config->global_implementation[t] -= Config->implement_lists[j][t];
 631                         }
 632
 633                         /* We have to renumber implement_lists after unload because the module numbers change!
 634                          */
 635                         for(int j2 = j; j2 < 254; j2++)
 636                         {
 637                                 for(int t = 0; t < 255; t++)
 638                                 {
 639                                         Config->implement_lists[j2][t] = Config->implement_lists[j2+1][t];
 640                                 }
 641                         }
 642
 643                         // found the module
 644                         Parser->RemoveCommands(filename);
 645                         this->EraseModule(j);
 646                         this->EraseFactory(j);
 647                         this->Log(DEFAULT,"Module %s unloaded",filename);
 648                         this->ModCount--;
 649                         BuildISupport();
 650                         return true;
 651                 }
 652         }
 653         this->Log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
 654         snprintf(MODERR,MAXBUF,"Module not loaded");
 655         return false;
 656 }
 657
 658 bool InspIRCd::LoadModule(const char* filename)
 659 {
 660         /* Do we have a glob pattern in the filename?
 661          * The user wants to load multiple modules which
 662          * match the pattern.
 663          */
 664         if (strchr(filename,'*') || (strchr(filename,'?')))
 665         {
 666                 int n_match = 0;
 667                 DIR* library = opendir(Config->ModPath);
 668                 if (library)
 669                 {
 670                         /* Try and locate and load all modules matching the pattern */
 671                         dirent* entry = NULL;
 672                         while ((entry = readdir(library)))
 673                         {
 674                                 if (this->MatchText(entry->d_name, filename))
 675                                 {
 676                                         if (!this->LoadModule(entry->d_name))
 677                                                 n_match++;
 678                                 }
 679                         }
 680                         closedir(library);
 681                 }
 682                 /* Loadmodule will now return false if any one of the modules failed
 683                  * to load (but wont abort when it encounters a bad one) and when 1 or
 684                  * more modules were actually loaded.
 685                  */
 686                 return (n_match > 0);
 687         }
 688
 689         char modfile[MAXBUF];
 690         snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
 691         std::string filename_str = filename;
 692
 693         if (!ServerConfig::DirValid(modfile))
 694         {
 695                 this->Log(DEFAULT,"Module %s is not within the modules directory.",modfile);
 696                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
 697                 return false;
 698         }
 699         if (ServerConfig::FileExists(modfile))
 700         {
 701
 702                 for (unsigned int j = 0; j < Config->module_names.size(); j++)
 703                 {
 704                         if (Config->module_names[j] == filename_str)
 705                         {
 706                                 this->Log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
 707                                 snprintf(MODERR,MAXBUF,"Module already loaded");
 708                                 return false;
 709                         }
 710                 }
 711                 try
 712                 {
 713                         ircd_module* a = new ircd_module(this, modfile);
 714                         factory[this->ModCount+1] = a;
 715                         if (factory[this->ModCount+1]->LastError())
 716                         {
 717                                 this->Log(DEFAULT,"Unable to load %s: %s",modfile,factory[this->ModCount+1]->LastError());
 718                                 snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[this->ModCount+1]->LastError());
 719                                 return false;
 720                         }
 721                         if ((long)factory[this->ModCount+1]->factory != -1)
 722                         {
 723                                 Module* m = factory[this->ModCount+1]->factory->CreateModule(this);
 724
 725                                 Version v = m->GetVersion();
 726
 727                                 if (v.API != API_VERSION)
 728                                 {
 729                                         delete m;
 730                                         delete a;
 731                                         this->Log(DEFAULT,"Unable to load %s: Incorrect module API version: %d (our version: %d)",modfile,v.API,API_VERSION);
 732                                         snprintf(MODERR,MAXBUF,"Loader/Linker error: Incorrect module API version: %d (our version: %d)",v.API,API_VERSION);
 733                                         return false;
 734                                 }
 735                                 else
 736                                 {
 737                                         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]"));
 738                                 }
 739
 740                                 modules[this->ModCount+1] = m;
 741                                 /* save the module and the module's classfactory, if
 742                                  * this isnt done, random crashes can occur :/ */
 743                                 Config->module_names.push_back(filename);
 744
 745                                 char* x = &Config->implement_lists[this->ModCount+1][0];
 746                                 for(int t = 0; t < 255; t++)
 747                                         x[t] = 0;
 748
 749                                 modules[this->ModCount+1]->Implements(x);
 750
 751                                 for(int t = 0; t < 255; t++)
 752                                         Config->global_implementation[t] += Config->implement_lists[this->ModCount+1][t];
 753                         }
 754                         else
 755                         {
 756                                 this->Log(DEFAULT,"Unable to load %s",modfile);
 757                                 snprintf(MODERR,MAXBUF,"Factory function failed: Probably missing init_module() entrypoint.");
 758                                 return false;
 759                         }
 760                 }
 761                 catch (CoreException& modexcept)
 762                 {
 763                         this->Log(DEFAULT,"Unable to load %s: ",modfile,modexcept.GetReason());
 764                         snprintf(MODERR,MAXBUF,"Factory function of %s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 765                         return false;
 766                 }
 767         }
 768         else
 769         {
 770                 this->Log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
 771                 snprintf(MODERR,MAXBUF,"Module file could not be found");
 772                 return false;
 773         }
 774         this->ModCount++;
 775         FOREACH_MOD_I(this,I_OnLoadModule,OnLoadModule(modules[this->ModCount],filename_str));
 776         // now work out which modules, if any, want to move to the back of the queue,
 777         // and if they do, move them there.
 778         std::vector<std::string> put_to_back;
 779         std::vector<std::string> put_to_front;
 780         std::map<std::string,std::string> put_before;
 781         std::map<std::string,std::string> put_after;
 782         for (unsigned int j = 0; j < Config->module_names.size(); j++)
 783         {
 784                 if (modules[j]->Prioritize() == PRIORITY_LAST)
 785                         put_to_back.push_back(Config->module_names[j]);
 786                 else if (modules[j]->Prioritize() == PRIORITY_FIRST)
 787                         put_to_front.push_back(Config->module_names[j]);
 788                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_BEFORE)
 789                         put_before[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 790                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_AFTER)
 791                         put_after[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 792         }
 793         for (unsigned int j = 0; j < put_to_back.size(); j++)
 794                 MoveToLast(put_to_back[j]);
 795         for (unsigned int j = 0; j < put_to_front.size(); j++)
 796                 MoveToFirst(put_to_front[j]);
 797         for (std::map<std::string,std::string>::iterator j = put_before.begin(); j != put_before.end(); j++)
 798                 MoveBefore(j->first,j->second);
 799         for (std::map<std::string,std::string>::iterator j = put_after.begin(); j != put_after.end(); j++)
 800                 MoveAfter(j->first,j->second);
 801         BuildISupport();
 802         return true;
 803 }
 804
 805 void InspIRCd::DoOneIteration(bool process_module_sockets)
 806 {
 807         static rusage ru;
 808
 809         /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 810          * Once per loop iteration is pleanty.
 811          */
 812         OLDTIME = TIME;
 813         TIME = time(NULL);
 814
 815         /* Run background module timers every few seconds
 816          * (the docs say modules shouldnt rely on accurate
 817          * timing using this event, so we dont have to
 818          * time this exactly).
 819          */
 820         if (TIME != OLDTIME)
 821         {
 822                 if (TIME < OLDTIME)
 823                         WriteOpers("*** \002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %d secs.",abs(OLDTIME-TIME));
 824                 if ((TIME % 3600) == 0)
 825                 {
 826                         this->RehashUsersAndChans();
 827                         FOREACH_MOD_I(this, I_OnGarbageCollect, OnGarbageCollect());
 828                 }
 829                 Timers->TickTimers(TIME);
 830                 this->DoBackgroundUserStuff(TIME);
 831
 832                 if ((TIME % 5) == 0)
 833                 {
 834                         XLines->expire_lines();
 835                         FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 836                         Timers->TickMissedTimers(TIME);
 837                 }
 838
 839                 if (!getrusage(0, &ru))
 840                 {
 841                         gettimeofday(&this->stats->LastSampled, NULL);
 842                         this->stats->LastCPU = ru.ru_utime;
 843                 }
 844         }
 845
 846         /* Call the socket engine to wait on the active
 847          * file descriptors. The socket engine has everything's
 848          * descriptors in its list... dns, modules, users,
 849          * servers... so its nice and easy, just one call.
 850          * This will cause any read or write events to be
 851          * dispatched to their handlers.
 852          */
 853         SE->DispatchEvents();
 854
 855         /* if any users was quit, take them out */
 856         GlobalCulls.Apply();
 857
 858 }
 859
 860 bool InspIRCd::IsIdent(const char* n)
 861 {
 862         if (!n || !*n)
 863                 return false;
 864
 865         for (char* i = (char*)n; *i; i++)
 866         {
 867                 if ((*i >= 'A') && (*i <= '}'))
 868                 {
 869                         continue;
 870                 }
 871                 if (((*i >= '0') && (*i <= '9')) || (*i == '-') || (*i == '.'))
 872                 {
 873                         continue;
 874                 }
 875                 return false;
 876         }
 877         return true;
 878 }
 879
 880
 881 int InspIRCd::Run()
 882 {
 883         while (true)
 884         {
 885                 DoOneIteration(true);
 886         }
 887         /* This is never reached -- we hope! */
 888         return 0;
 889 }
 890
 891 /**********************************************************************************/
 892
 893 /**
 894  * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
 895  */
 896
 897 int main(int argc, char** argv)
 898 {
 899         SI = new InspIRCd(argc, argv);
 900         SI->Run();
 901         delete SI;
 902         return 0;
 903 }
 904
 905 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 906  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 907  * registration timeout maximum seconds)
 908  */
 909 bool InspIRCd::AllModulesReportReady(userrec* user)
 910 {
 911         if (!Config->global_implementation[I_OnCheckReady])
 912                 return true;
 913
 914         for (int i = 0; i <= this->GetModuleCount(); i++)
 915         {
 916                 if (Config->implement_lists[i][I_OnCheckReady])
 917                 {
 918                         int res = modules[i]->OnCheckReady(user);
 919                         if (!res)
 920                                 return false;
 921                 }
 922         }
 923         return true;
 924 }
 925
 926 int InspIRCd::GetModuleCount()
 927 {
 928         return this->ModCount;
 929 }
 930
 931 time_t InspIRCd::Time(bool delta)
 932 {
 933         if (delta)
 934                 return TIME + time_delta;
 935         return TIME;
 936 }
 937
 938 int InspIRCd::SetTimeDelta(int delta)
 939 {
 940         int old = time_delta;
 941         time_delta += delta;
 942         this->Log(DEBUG, "Time delta set to %d (was %d)", time_delta, old);
 943         return old;
 944 }
 945
 946 void InspIRCd::AddLocalClone(userrec* user)
 947 {
 948         clonemap::iterator x = local_clones.find(user->GetIPString());
 949         if (x != local_clones.end())
 950                 x->second++;
 951         else
 952                 local_clones[user->GetIPString()] = 1;
 953 }
 954
 955 void InspIRCd::AddGlobalClone(userrec* user)
 956 {
 957         clonemap::iterator y = global_clones.find(user->GetIPString());
 958         if (y != global_clones.end())
 959                 y->second++;
 960         else
 961                 global_clones[user->GetIPString()] = 1;
 962 }
 963
 964 int InspIRCd::GetTimeDelta()
 965 {
 966         return time_delta;
 967 }
 968
 969 bool FileLogger::Readable()
 970 {
 971         return false;
 972 }
 973
 974 void FileLogger::HandleEvent(EventType et, int errornum)
 975 {
 976         this->WriteLogLine("");
 977         if (log)
 978                 ServerInstance->SE->DelFd(this);
 979 }
 980
 981 void FileLogger::WriteLogLine(const std::string &line)
 982 {
 983         if (line.length())
 984                 buffer.append(line);
 985
 986         if (log)
 987         {
 988                 int written = fprintf(log,"%s",buffer.c_str());
 989                 if ((written >= 0) && (written < (int)buffer.length()))
 990                 {
 991                         buffer.erase(0, buffer.length());
 992                         ServerInstance->SE->AddFd(this);
 993                 }
 994                 else if (written == -1)
 995                 {
 996                         if (errno == EAGAIN)
 997                                 ServerInstance->SE->AddFd(this);
 998                 }
 999                 else
1000                 {
1001                         /* Wrote the whole buffer, and no need for write callback */
1002                         buffer = "";
1003                 }
1004         }
1005         if (writeops++ % 20)
1006         {
1007                 fflush(log);
1008         }
1009 }
1010
1011 void FileLogger::Close()
1012 {
1013         if (log)
1014         {
1015                 int flags = fcntl(fileno(log), F_GETFL, 0);
1016                 fcntl(fileno(log), F_SETFL, flags ^ O_NONBLOCK);
1017                 if (buffer.size())
1018                         fprintf(log,"%s",buffer.c_str());
1019
1020                 ServerInstance->SE->DelFd(this);
1021
1022                 fflush(log);
1023                 fclose(log);
1024         }
1025
1026         buffer = "";
1027 }
1028
1029 FileLogger::FileLogger(InspIRCd* Instance, FILE* logfile) : ServerInstance(Instance), log(logfile), writeops(0)
1030 {
1031         if (log)
1032         {
1033                 irc::sockets::NonBlocking(fileno(log));
1034                 this->SetFd(fileno(log));
1035                 buffer = "";
1036         }
1037 }
1038
1039 FileLogger::~FileLogger()
1040 {
1041         this->Close();
1042 }
1043