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