src/configreader.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2007-2009 Robin Burchell <robin+git@viroteck.net>
   6  *   Copyright (C) 2006-2009 Dennis Friis <peavey@inspircd.org>
   7  *   Copyright (C) 2006-2008 Craig Edwards <craigedwards@brainbox.cc>
   8  *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
   9  *   Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
  10  *
  11  * This file is part of InspIRCd.  InspIRCd is free software: you can
  12  * redistribute it and/or modify it under the terms of the GNU General Public
  13  * License as published by the Free Software Foundation, version 2.
  14  *
  15  * This program is distributed in the hope that it will be useful, but WITHOUT
  16  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  17  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  18  * details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22  */
  23
  24
  25 #include "inspircd.h"
  26 #include "xline.h"
  27 #include "listmode.h"
  28 #include "exitcodes.h"
  29 #include "configparser.h"
  30 #include <iostream>
  31
  32 ServerLimits::ServerLimits(ConfigTag* tag)
  33         : NickMax(tag->getUInt("maxnick", 30))
  34         , ChanMax(tag->getUInt("maxchan", 64))
  35         , MaxModes(tag->getUInt("maxmodes", 20))
  36         , IdentMax(tag->getUInt("maxident", 10))
  37         , MaxQuit(tag->getUInt("maxquit", 255))
  38         , MaxTopic(tag->getUInt("maxtopic", 307))
  39         , MaxKick(tag->getUInt("maxkick", 255))
  40         , MaxReal(tag->getUInt("maxreal", tag->getUInt("maxgecos", 128)))
  41         , MaxAway(tag->getUInt("maxaway", 200))
  42         , MaxLine(tag->getUInt("maxline", 512))
  43         , MaxHost(tag->getUInt("maxhost", 64))
  44 {
  45 }
  46
  47 ServerConfig::ServerPaths::ServerPaths(ConfigTag* tag)
  48         : Config(tag->getString("configdir", INSPIRCD_CONFIG_PATH))
  49         , Data(tag->getString("datadir", INSPIRCD_DATA_PATH))
  50         , Log(tag->getString("logdir", INSPIRCD_LOG_PATH))
  51         , Module(tag->getString("moduledir", INSPIRCD_MODULE_PATH))
  52 {
  53 }
  54
  55 static ConfigTag* CreateEmptyTag()
  56 {
  57         ConfigItems* items;
  58         return ConfigTag::create("empty", "<auto>", 0, items);
  59 }
  60
  61 ServerConfig::ServerConfig()
  62         : EmptyTag(CreateEmptyTag())
  63         , Limits(EmptyTag)
  64         , Paths(EmptyTag)
  65         , RawLog(false)
  66         , NoSnoticeStack(false)
  67 {
  68 }
  69
  70 ServerConfig::~ServerConfig()
  71 {
  72         delete EmptyTag;
  73 }
  74
  75 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
  76 {
  77         ConfigTagList tags = conf->ConfTags(tag);
  78         for(ConfigIter i = tags.first; i != tags.second; ++i)
  79         {
  80                 ConfigTag* ctag = i->second;
  81                 std::string mask;
  82                 if (!ctag->readString(key, mask))
  83                         throw CoreException("<"+tag+":"+key+"> missing at " + ctag->getTagLocation());
  84                 std::string reason = ctag->getString("reason", "<Config>");
  85                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
  86                 xl->from_config = true;
  87                 if (!ServerInstance->XLines->AddLine(xl, NULL))
  88                         delete xl;
  89         }
  90 }
  91
  92 typedef std::map<std::string, ConfigTag*> LocalIndex;
  93 void ServerConfig::CrossCheckOperClassType()
  94 {
  95         LocalIndex operclass;
  96         ConfigTagList tags = ConfTags("class");
  97         for(ConfigIter i = tags.first; i != tags.second; ++i)
  98         {
  99                 ConfigTag* tag = i->second;
 100                 std::string name = tag->getString("name");
 101                 if (name.empty())
 102                         throw CoreException("<class:name> missing from tag at " + tag->getTagLocation());
 103                 if (operclass.find(name) != operclass.end())
 104                         throw CoreException("Duplicate class block with name " + name + " at " + tag->getTagLocation());
 105                 operclass[name] = tag;
 106         }
 107         tags = ConfTags("type");
 108         for(ConfigIter i = tags.first; i != tags.second; ++i)
 109         {
 110                 ConfigTag* tag = i->second;
 111                 std::string name = tag->getString("name");
 112                 if (name.empty())
 113                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
 114                 if (OperTypes.find(name) != OperTypes.end())
 115                         throw CoreException("Duplicate type block with name " + name + " at " + tag->getTagLocation());
 116
 117                 OperInfo* ifo = new OperInfo(name);
 118                 OperTypes[name] = ifo;
 119                 ifo->type_block = tag;
 120
 121                 std::string classname;
 122                 irc::spacesepstream str(tag->getString("classes"));
 123                 while (str.GetToken(classname))
 124                 {
 125                         LocalIndex::iterator cls = operclass.find(classname);
 126                         if (cls == operclass.end())
 127                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 128                         ifo->class_blocks.push_back(cls->second);
 129                 }
 130         }
 131
 132         tags = ConfTags("oper");
 133         for(ConfigIter i = tags.first; i != tags.second; ++i)
 134         {
 135                 ConfigTag* tag = i->second;
 136
 137                 std::string name = tag->getString("name");
 138                 if (name.empty())
 139                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 140
 141                 std::string type = tag->getString("type");
 142                 OperIndex::iterator tblk = OperTypes.find(type);
 143                 if (tblk == OperTypes.end())
 144                         throw CoreException("Oper block " + name + " has missing type " + type);
 145                 if (oper_blocks.find(name) != oper_blocks.end())
 146                         throw CoreException("Duplicate oper block with name " + name + " at " + tag->getTagLocation());
 147
 148                 OperInfo* ifo = new OperInfo(type);
 149                 ifo->oper_block = tag;
 150                 ifo->type_block = tblk->second->type_block;
 151                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 152                 oper_blocks[name] = ifo;
 153         }
 154 }
 155
 156 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 157 {
 158         typedef std::map<std::string, ConnectClass*> ClassMap;
 159         ClassMap oldBlocksByMask;
 160         if (current)
 161         {
 162                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 163                 {
 164                         ConnectClass* c = *i;
 165                         if (c->name.compare(0, 8, "unnamed-", 8))
 166                         {
 167                                 oldBlocksByMask["n" + c->name] = c;
 168                         }
 169                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 170                         {
 171                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 172                                 typeMask += c->host;
 173                                 oldBlocksByMask[typeMask] = c;
 174                         }
 175                 }
 176         }
 177
 178         size_t blk_count = config_data.count("connect");
 179         if (blk_count == 0)
 180         {
 181                 // No connect blocks found; make a trivial default block
 182                 ConfigItems* items;
 183                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 184                 (*items)["allow"] = "*";
 185                 config_data.insert(std::make_pair("connect", tag));
 186                 blk_count = 1;
 187         }
 188
 189         Classes.resize(blk_count);
 190         std::map<std::string, size_t> names;
 191
 192         bool try_again = true;
 193         for(size_t tries = 0; try_again; tries++)
 194         {
 195                 try_again = false;
 196                 ConfigTagList tags = ConfTags("connect");
 197                 size_t i = 0;
 198                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 199                 {
 200                         ConfigTag* tag = it->second;
 201                         if (Classes[i])
 202                                 continue;
 203
 204                         ConnectClass* parent = NULL;
 205                         std::string parentName = tag->getString("parent");
 206                         if (!parentName.empty())
 207                         {
 208                                 std::map<std::string, size_t>::const_iterator parentIter = names.find(parentName);
 209                                 if (parentIter == names.end())
 210                                 {
 211                                         try_again = true;
 212                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 213                                         if (tries >= blk_count)
 214                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 215                                         continue;
 216                                 }
 217                                 parent = Classes[parentIter->second];
 218                         }
 219
 220                         std::string name = tag->getString("name");
 221                         std::string mask, typeMask;
 222                         char type;
 223
 224                         if (tag->readString("allow", mask, false))
 225                         {
 226                                 type = CC_ALLOW;
 227                                 typeMask = 'a' + mask;
 228                         }
 229                         else if (tag->readString("deny", mask, false))
 230                         {
 231                                 type = CC_DENY;
 232                                 typeMask = 'd' + mask;
 233                         }
 234                         else if (!name.empty())
 235                         {
 236                                 type = CC_NAMED;
 237                                 mask = name;
 238                                 typeMask = 'n' + mask;
 239                         }
 240                         else
 241                         {
 242                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 243                         }
 244
 245                         if (name.empty())
 246                         {
 247                                 name = "unnamed-" + ConvToStr(i);
 248                         }
 249                         else
 250                         {
 251                                 typeMask = 'n' + name;
 252                         }
 253
 254                         if (names.find(name) != names.end())
 255                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 256                         names[name] = i;
 257
 258                         ConnectClass* me = parent ?
 259                                 new ConnectClass(tag, type, mask, *parent) :
 260                                 new ConnectClass(tag, type, mask);
 261
 262                         me->name = name;
 263
 264                         me->registration_timeout = tag->getDuration("timeout", me->registration_timeout);
 265                         me->pingtime = tag->getDuration("pingfreq", me->pingtime);
 266                         std::string sendq;
 267                         if (tag->readString("sendq", sendq))
 268                         {
 269                                 // attempt to guess a good hard/soft sendq from a single value
 270                                 unsigned long value = strtoul(sendq.c_str(), NULL, 10);
 271                                 if (value > 16384)
 272                                         me->softsendqmax = value / 16;
 273                                 else
 274                                         me->softsendqmax = value;
 275                                 me->hardsendqmax = value * 8;
 276                         }
 277                         me->softsendqmax = tag->getUInt("softsendq", me->softsendqmax);
 278                         me->hardsendqmax = tag->getUInt("hardsendq", me->hardsendqmax);
 279                         me->recvqmax = tag->getUInt("recvq", me->recvqmax);
 280                         me->penaltythreshold = tag->getUInt("threshold", me->penaltythreshold);
 281                         me->commandrate = tag->getUInt("commandrate", me->commandrate);
 282                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 283                         me->maxlocal = tag->getUInt("localmax", me->maxlocal);
 284                         me->maxglobal = tag->getUInt("globalmax", me->maxglobal);
 285                         me->maxchans = tag->getUInt("maxchans", me->maxchans);
 286                         me->maxconnwarn = tag->getBool("maxconnwarn", me->maxconnwarn);
 287                         me->limit = tag->getUInt("limit", me->limit);
 288                         me->resolvehostnames = tag->getBool("resolvehostnames", me->resolvehostnames);
 289
 290                         std::string ports = tag->getString("port");
 291                         if (!ports.empty())
 292                         {
 293                                 irc::portparser portrange(ports, false);
 294                                 while (int port = portrange.GetToken())
 295                                         me->ports.insert(port);
 296                         }
 297
 298                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 299                         if (oldMask != oldBlocksByMask.end())
 300                         {
 301                                 ConnectClass* old = oldMask->second;
 302                                 oldBlocksByMask.erase(oldMask);
 303                                 old->Update(me);
 304                                 delete me;
 305                                 me = old;
 306                         }
 307                         Classes[i] = me;
 308                 }
 309         }
 310 }
 311
 312 static std::string GetServerName()
 313 {
 314 #ifndef _WIN32
 315         char hostname[256];
 316         if (gethostname(hostname, sizeof(hostname)) == 0)
 317         {
 318                 std::string name(hostname);
 319                 if (name.find('.') == std::string::npos)
 320                         name.push_back('.');
 321
 322                 if (name.length() <= ServerInstance->Config->Limits.MaxHost && InspIRCd::IsHost(name))
 323                         return name;
 324         }
 325 #endif
 326         return "irc.example.com";
 327 }
 328
 329 void ServerConfig::Fill()
 330 {
 331         ConfigTag* options = ConfValue("options");
 332         ConfigTag* security = ConfValue("security");
 333         ConfigTag* server = ConfValue("server");
 334         if (sid.empty())
 335         {
 336                 ServerName = server->getString("name", GetServerName(), InspIRCd::IsHost);
 337
 338                 sid = server->getString("id");
 339                 if (!sid.empty() && !InspIRCd::IsSID(sid))
 340                         throw CoreException(sid + " is not a valid server ID. A server ID must be 3 characters long, with the first character a digit and the next two characters a digit or letter.");
 341
 342                 CaseMapping = options->getString("casemapping", "rfc1459");
 343                 if (CaseMapping == "ascii")
 344                         national_case_insensitive_map = ascii_case_insensitive_map;
 345                 else if (CaseMapping == "rfc1459")
 346                         national_case_insensitive_map = rfc_case_insensitive_map;
 347                 else
 348                         throw CoreException("<options:casemapping> must be set to 'ascii', or 'rfc1459'");
 349         }
 350         else
 351         {
 352                 std::string name = server->getString("name");
 353                 if (!name.empty() && name != ServerName)
 354                         throw CoreException("You must restart to change the server name");
 355
 356                 std::string nsid = server->getString("id");
 357                 if (!nsid.empty() && nsid != sid)
 358                         throw CoreException("You must restart to change the server id");
 359
 360                 std::string casemapping = options->getString("casemapping");
 361                 if (!casemapping.empty() && casemapping != CaseMapping)
 362                         throw CoreException("You must restart to change the server casemapping");
 363
 364         }
 365         SoftLimit = ConfValue("performance")->getUInt("softlimit", (SocketEngine::GetMaxFds() > 0 ? SocketEngine::GetMaxFds() : LONG_MAX), 10);
 366         CCOnConnect = ConfValue("performance")->getBool("clonesonconnect", true);
 367         MaxConn = ConfValue("performance")->getUInt("somaxconn", SOMAXCONN);
 368         TimeSkipWarn = ConfValue("performance")->getDuration("timeskipwarn", 2, 0, 30);
 369         XLineMessage = options->getString("xlinemessage", options->getString("moronbanner", "You're banned!"));
 370         ServerDesc = server->getString("description", "Configure Me");
 371         Network = server->getString("network", "Network");
 372         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240, 1024, 65534);
 373         CustomVersion = security->getString("customversion");
 374         HideBans = security->getBool("hidebans");
 375         HideServer = security->getString("hideserver", security->getString("hidewhois"));
 376         SyntaxHints = options->getBool("syntaxhints");
 377         FullHostInTopic = options->getBool("hostintopic");
 378         MaxTargets = security->getUInt("maxtargets", 20, 1, 31);
 379         DefaultModes = options->getString("defaultmodes", "not");
 380         PID = ConfValue("pid")->getString("file");
 381         MaxChans = ConfValue("channels")->getUInt("users", 20);
 382         OperMaxChans = ConfValue("channels")->getUInt("opers", 0);
 383         c_ipv4_range = ConfValue("cidr")->getUInt("ipv4clone", 32, 1, 32);
 384         c_ipv6_range = ConfValue("cidr")->getUInt("ipv6clone", 128, 1, 128);
 385         Limits = ServerLimits(ConfValue("limits"));
 386         Paths = ServerPaths(ConfValue("path"));
 387         NoSnoticeStack = options->getBool("nosnoticestack", false);
 388
 389         std::string defbind = options->getString("defaultbind");
 390         if (stdalgo::string::equalsci(defbind, "ipv4"))
 391         {
 392                 WildcardIPv6 = false;
 393         }
 394         else if (stdalgo::string::equalsci(defbind, "ipv6"))
 395         {
 396                 WildcardIPv6 = true;
 397         }
 398         else
 399         {
 400                 WildcardIPv6 = true;
 401                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 402                 if (socktest < 0)
 403                         WildcardIPv6 = false;
 404                 else
 405                         SocketEngine::Close(socktest);
 406         }
 407
 408         ServerInstance->XLines->ClearConfigLines();
 409         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 410         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 411         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 412         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 413
 414         const std::string restrictbannedusers = options->getString("restrictbannedusers", "yes");
 415         if (stdalgo::string::equalsci(restrictbannedusers, "no"))
 416                 RestrictBannedUsers = ServerConfig::BUT_NORMAL;
 417         else if (stdalgo::string::equalsci(restrictbannedusers, "silent"))
 418                 RestrictBannedUsers = ServerConfig::BUT_RESTRICT_SILENT;
 419         else if (stdalgo::string::equalsci(restrictbannedusers, "yes"))
 420                 RestrictBannedUsers =  ServerConfig::BUT_RESTRICT_NOTIFY;
 421         else
 422                 throw CoreException(restrictbannedusers + " is an invalid <options:restrictbannedusers> value, at " + options->getTagLocation());
 423 }
 424
 425 // WARNING: it is not safe to use most of the codebase in this function, as it
 426 // will run in the config reader thread
 427 void ServerConfig::Read()
 428 {
 429         /* Load and parse the config file, if there are any errors then explode */
 430
 431         ParseStack stack(this);
 432         try
 433         {
 434                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 435         }
 436         catch (CoreException& err)
 437         {
 438                 valid = false;
 439                 errstr << err.GetReason() << std::endl;
 440         }
 441 }
 442
 443 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 444 {
 445         valid = true;
 446         if (old)
 447         {
 448                 /*
 449                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 450                  */
 451                 this->CaseMapping = old->CaseMapping;
 452                 this->ServerName = old->ServerName;
 453                 this->sid = old->sid;
 454                 this->cmdline = old->cmdline;
 455         }
 456
 457         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 458         try
 459         {
 460                 // Ensure the user has actually edited ther config.
 461                 ConfigTagList dietags = ConfTags("die");
 462                 if (dietags.first != dietags.second)
 463                 {
 464                         errstr << "Your configuration has not been edited correctly!" << std::endl;
 465                         for (ConfigIter iter = dietags.first; iter != dietags.second; ++iter)
 466                         {
 467                                 ConfigTag* tag = iter->second;
 468                                 const std::string reason = tag->getString("reason", "You left a <die> tag in your config", 1);
 469                                 errstr << reason <<  " (at " << tag->getTagLocation() << ")" << std::endl;
 470                         }
 471                 }
 472
 473                 Fill();
 474
 475                 // Handle special items
 476                 CrossCheckOperClassType();
 477                 CrossCheckConnectBlocks(old);
 478         }
 479         catch (CoreException &ce)
 480         {
 481                 errstr << ce.GetReason() << std::endl;
 482         }
 483
 484         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 485         valid = errstr.str().empty();
 486
 487         // write once here, to try it out and make sure its ok
 488         if (valid)
 489                 ServerInstance->WritePID(this->PID, !old);
 490
 491         ConfigTagList binds = ConfTags("bind");
 492         if (binds.first == binds.second)
 493                  errstr << "Possible configuration error: you have not defined any <bind> blocks." << std::endl
 494                          << "You will need to do this if you want clients to be able to connect!" << std::endl;
 495
 496         if (old && valid)
 497         {
 498                 // On first run, ports are bound later on
 499                 FailedPortList pl;
 500                 ServerInstance->BindPorts(pl);
 501                 if (pl.size())
 502                 {
 503                         errstr << "Not all your client ports could be bound." << std::endl
 504                                 << "The following port(s) failed to bind:" << std::endl;
 505
 506                         int j = 1;
 507                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 508                         {
 509                                 errstr << j << ".\tAddress: " << i->first.str() << "\tReason: " << strerror(i->second) << std::endl;
 510                         }
 511                 }
 512         }
 513
 514         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 515
 516         if (!valid)
 517         {
 518                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "There were errors in your configuration file:");
 519                 Classes.clear();
 520         }
 521
 522         while (errstr.good())
 523         {
 524                 std::string line;
 525                 getline(errstr, line, '\n');
 526                 if (line.empty())
 527                         continue;
 528                 // On startup, print out to console (still attached at this point)
 529                 if (!old)
 530                         std::cout << line << std::endl;
 531                 // If a user is rehashing, tell them directly
 532                 if (user)
 533                         user->WriteRemoteNotice(InspIRCd::Format("*** %s", line.c_str()));
 534                 // Also tell opers
 535                 ServerInstance->SNO->WriteGlobalSno('a', line);
 536         }
 537
 538         errstr.clear();
 539         errstr.str(std::string());
 540
 541         /* No old configuration -> initial boot, nothing more to do here */
 542         if (!old)
 543         {
 544                 if (!valid)
 545                 {
 546                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 547                 }
 548
 549                 return;
 550         }
 551
 552
 553         // If there were errors processing configuration, don't touch modules.
 554         if (!valid)
 555                 return;
 556
 557         ApplyModules(user);
 558
 559         if (user)
 560                 user->WriteRemoteNotice("*** Successfully rehashed server.");
 561         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 562 }
 563
 564 void ServerConfig::ApplyModules(User* user)
 565 {
 566         std::vector<std::string> added_modules;
 567         ModuleManager::ModuleMap removed_modules = ServerInstance->Modules->GetModules();
 568
 569         ConfigTagList tags = ConfTags("module");
 570         for(ConfigIter i = tags.first; i != tags.second; ++i)
 571         {
 572                 ConfigTag* tag = i->second;
 573                 std::string name;
 574                 if (tag->readString("name", name))
 575                 {
 576                         name = ModuleManager::ExpandModName(name);
 577                         // if this module is already loaded, the erase will succeed, so we need do nothing
 578                         // otherwise, we need to add the module (which will be done later)
 579                         if (removed_modules.erase(name) == 0)
 580                                 added_modules.push_back(name);
 581                 }
 582         }
 583
 584         for (ModuleManager::ModuleMap::iterator i = removed_modules.begin(); i != removed_modules.end(); ++i)
 585         {
 586                 const std::string& modname = i->first;
 587                 // Don't remove core_*.so, just remove m_*.so
 588                 if (InspIRCd::Match(modname, "core_*.so", ascii_case_insensitive_map))
 589                         continue;
 590                 if (ServerInstance->Modules->Unload(i->second))
 591                 {
 592                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s", modname.c_str());
 593
 594                         if (user)
 595                                 user->WriteNumeric(RPL_UNLOADEDMODULE, modname, InspIRCd::Format("Module %s successfully unloaded.", modname.c_str()));
 596                         else
 597                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", modname.c_str());
 598                 }
 599                 else
 600                 {
 601                         if (user)
 602                                 user->WriteNumeric(ERR_CANTUNLOADMODULE, modname, InspIRCd::Format("Failed to unload module %s: %s", modname.c_str(), ServerInstance->Modules->LastError().c_str()));
 603                         else
 604                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", modname.c_str(), ServerInstance->Modules->LastError().c_str());
 605                 }
 606         }
 607
 608         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 609         {
 610                 // Skip modules which are already loaded.
 611                 if (ServerInstance->Modules->Find(*adding))
 612                         continue;
 613
 614                 if (ServerInstance->Modules->Load(*adding))
 615                 {
 616                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 617                         if (user)
 618                                 user->WriteNumeric(RPL_LOADEDMODULE, *adding, InspIRCd::Format("Module %s successfully loaded.", adding->c_str()));
 619                         else
 620                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 621                 }
 622                 else
 623                 {
 624                         if (user)
 625                                 user->WriteNumeric(ERR_CANTLOADMODULE, *adding, InspIRCd::Format("Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str()));
 626                         else
 627                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 628                 }
 629         }
 630 }
 631
 632 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 633 {
 634         ConfigTagList found = config_data.equal_range(tag);
 635         if (found.first == found.second)
 636                 return EmptyTag;
 637         ConfigTag* rv = found.first->second;
 638         found.first++;
 639         if (found.first != found.second)
 640                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 641                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 642         return rv;
 643 }
 644
 645 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 646 {
 647         return config_data.equal_range(tag);
 648 }
 649
 650 std::string ServerConfig::Escape(const std::string& str, bool xml)
 651 {
 652         std::string escaped;
 653         for (std::string::const_iterator it = str.begin(); it != str.end(); ++it)
 654         {
 655                 switch (*it)
 656                 {
 657                         case '"':
 658                                 escaped += xml ? "&quot;" : "\"";
 659                                 break;
 660                         case '&':
 661                                 escaped += xml ? "&amp;" : "&";
 662                                 break;
 663                         case '\\':
 664                                 escaped += xml ? "\\" : "\\\\";
 665                                 break;
 666                         default:
 667                                 escaped += *it;
 668                                 break;
 669                 }
 670         }
 671         return escaped;
 672 }
 673
 674 void ConfigReaderThread::Run()
 675 {
 676         Config->Read();
 677         done = true;
 678 }
 679
 680 void ConfigReaderThread::Finish()
 681 {
 682         ServerConfig* old = ServerInstance->Config;
 683         ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "Switching to new configuration...");
 684         ServerInstance->Config = this->Config;
 685         Config->Apply(old, TheUserUID);
 686
 687         if (Config->valid)
 688         {
 689                 /*
 690                  * Apply the changed configuration from the rehash.
 691                  *
 692                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 693                  * thoroughly!!!
 694                  */
 695                 ServerInstance->Users.RehashCloneCounts();
 696                 ServerInstance->XLines->CheckELines();
 697                 ServerInstance->XLines->ApplyLines();
 698                 User* user = ServerInstance->FindNick(TheUserUID);
 699
 700                 ConfigStatus status(user);
 701                 const ModuleManager::ModuleMap& mods = ServerInstance->Modules->GetModules();
 702                 for (ModuleManager::ModuleMap::const_iterator i = mods.begin(); i != mods.end(); ++i)
 703                 {
 704                         try
 705                         {
 706                                 ServerInstance->Logs->Log("MODULE", LOG_DEBUG, "Rehashing " + i->first);
 707                                 i->second->ReadConfig(status);
 708                         }
 709                         catch (CoreException& modex)
 710                         {
 711                                 ServerInstance->Logs->Log("MODULE", LOG_DEFAULT, "Exception caught: " + modex.GetReason());
 712                                 if (user)
 713                                         user->WriteNotice(i->first + ": " + modex.GetReason());
 714                         }
 715                 }
 716
 717                 // The description of this server may have changed - update it for WHOIS etc.
 718                 ServerInstance->FakeClient->server->description = Config->ServerDesc;
 719
 720                 ServerInstance->ISupport.Build();
 721
 722                 ServerInstance->Logs->CloseLogs();
 723                 ServerInstance->Logs->OpenFileLogs();
 724
 725                 if (Config->RawLog && !old->RawLog)
 726                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 727
 728                 Config = old;
 729         }
 730         else
 731         {
 732                 // whoops, abort!
 733                 ServerInstance->Config = old;
 734         }
 735 }