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