src/configreader.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2019 Matt Schatz <genius3000@g3k.solutions>
   5  *   Copyright (C) 2013-2016 Attila Molnar <attilamolnar@hush.com>
   6  *   Copyright (C) 2013-2014, 2016-2021 Sadie Powell <sadie@witchery.services>
   7  *   Copyright (C) 2013 Daniel Vassdal <shutter@canternet.org>
   8  *   Copyright (C) 2012 Robby <robby@chatbelgie.be>
   9  *   Copyright (C) 2012 Justin Crawford <Justasic@Gmail.com>
  10  *   Copyright (C) 2012 DjSlash <djslash@djslash.org>
  11  *   Copyright (C) 2012 ChrisTX <xpipe@hotmail.de>
  12  *   Copyright (C) 2009-2011 Daniel De Graaf <danieldg@inspircd.org>
  13  *   Copyright (C) 2009 Uli Schlachter <psychon@inspircd.org>
  14  *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
  15  *   Copyright (C) 2007-2010 Robin Burchell <robin+git@viroteck.net>
  16  *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
  17  *   Copyright (C) 2006-2008 Craig Edwards <brain@inspircd.org>
  18  *   Copyright (C) 2006 Oliver Lupton <om@inspircd.org>
  19  *
  20  * This file is part of InspIRCd.  InspIRCd is free software: you can
  21  * redistribute it and/or modify it under the terms of the GNU General Public
  22  * License as published by the Free Software Foundation, version 2.
  23  *
  24  * This program is distributed in the hope that it will be useful, but WITHOUT
  25  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  26  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  27  * details.
  28  *
  29  * You should have received a copy of the GNU General Public License
  30  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  31  */
  32
  33
  34 #include "inspircd.h"
  35 #include "xline.h"
  36 #include "listmode.h"
  37 #include "exitcodes.h"
  38 #include "configparser.h"
  39 #include <iostream>
  40
  41 ServerLimits::ServerLimits(ConfigTag* tag)
  42         : MaxLine(tag->getUInt("maxline", 512, 512))
  43         , NickMax(tag->getUInt("maxnick", 30, 1, MaxLine))
  44         , ChanMax(tag->getUInt("maxchan", 64, 1, MaxLine))
  45         , MaxModes(tag->getUInt("maxmodes", 20, 1))
  46         , IdentMax(tag->getUInt("maxident", 10, 1))
  47         , MaxQuit(tag->getUInt("maxquit", 255, 0, MaxLine))
  48         , MaxTopic(tag->getUInt("maxtopic", 307, 1, MaxLine))
  49         , MaxKick(tag->getUInt("maxkick", 255, 1, MaxLine))
  50         , MaxReal(tag->getUInt("maxreal", tag->getUInt("maxgecos", 128), 1, MaxLine))
  51         , MaxAway(tag->getUInt("maxaway", 200, 1, MaxLine))
  52         , MaxHost(tag->getUInt("maxhost", 64, 1, MaxLine))
  53 {
  54 }
  55
  56 ServerConfig::ServerPaths::ServerPaths(ConfigTag* tag)
  57         : Config(tag->getString("configdir", INSPIRCD_CONFIG_PATH, 1))
  58         , Data(tag->getString("datadir", INSPIRCD_DATA_PATH, 1))
  59         , Log(tag->getString("logdir", INSPIRCD_LOG_PATH, 1))
  60         , Module(tag->getString("moduledir", INSPIRCD_MODULE_PATH, 1))
  61         , Runtime(tag->getString("runtimedir", INSPIRCD_RUNTIME_PATH, 1))
  62 {
  63 }
  64
  65 static ConfigTag* CreateEmptyTag()
  66 {
  67         ConfigItems* items;
  68         return ConfigTag::create("empty", "<auto>", 0, items);
  69 }
  70
  71 ServerConfig::ServerConfig()
  72         : EmptyTag(CreateEmptyTag())
  73         , Limits(EmptyTag)
  74         , Paths(EmptyTag)
  75         , RawLog(false)
  76         , NoSnoticeStack(false)
  77 {
  78 }
  79
  80 ServerConfig::~ServerConfig()
  81 {
  82         delete EmptyTag;
  83 }
  84
  85 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
  86 {
  87         insp::flat_set<std::string> configlines;
  88
  89         ConfigTagList tags = conf->ConfTags(tag);
  90         for(ConfigIter i = tags.first; i != tags.second; ++i)
  91         {
  92                 ConfigTag* ctag = i->second;
  93
  94                 const std::string mask = ctag->getString(key);
  95                 if (mask.empty())
  96                         throw CoreException("<" + tag + ":" + key + "> missing at " + ctag->getTagLocation());
  97
  98                 const std::string reason = ctag->getString("reason");
  99                 if (reason.empty())
 100                         throw CoreException("<" + tag + ":reason> missing at " + ctag->getTagLocation());
 101
 102                 XLine* xl = make->Generate(ServerInstance->Time(), 0, ServerInstance->Config->ServerName, reason, mask);
 103                 xl->from_config = true;
 104                 configlines.insert(xl->Displayable());
 105                 if (!ServerInstance->XLines->AddLine(xl, NULL))
 106                         delete xl;
 107         }
 108
 109         ServerInstance->XLines->ExpireRemovedConfigLines(make->GetType(), configlines);
 110 }
 111
 112 typedef std::map<std::string, ConfigTag*> LocalIndex;
 113 void ServerConfig::CrossCheckOperClassType()
 114 {
 115         LocalIndex operclass;
 116         ConfigTagList tags = ConfTags("class");
 117         for(ConfigIter i = tags.first; i != tags.second; ++i)
 118         {
 119                 ConfigTag* tag = i->second;
 120                 std::string name = tag->getString("name");
 121                 if (name.empty())
 122                         throw CoreException("<class:name> missing from tag at " + tag->getTagLocation());
 123                 if (operclass.find(name) != operclass.end())
 124                         throw CoreException("Duplicate class block with name " + name + " at " + tag->getTagLocation());
 125                 operclass[name] = tag;
 126         }
 127         tags = ConfTags("type");
 128         for(ConfigIter i = tags.first; i != tags.second; ++i)
 129         {
 130                 ConfigTag* tag = i->second;
 131                 std::string name = tag->getString("name");
 132                 if (name.empty())
 133                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
 134                 if (OperTypes.find(name) != OperTypes.end())
 135                         throw CoreException("Duplicate type block with name " + name + " at " + tag->getTagLocation());
 136
 137                 OperInfo* ifo = new OperInfo(name);
 138                 OperTypes[name] = ifo;
 139                 ifo->type_block = tag;
 140
 141                 std::string classname;
 142                 irc::spacesepstream str(tag->getString("classes"));
 143                 while (str.GetToken(classname))
 144                 {
 145                         LocalIndex::iterator cls = operclass.find(classname);
 146                         if (cls == operclass.end())
 147                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 148                         ifo->class_blocks.push_back(cls->second);
 149                 }
 150         }
 151
 152         tags = ConfTags("oper");
 153         for(ConfigIter i = tags.first; i != tags.second; ++i)
 154         {
 155                 ConfigTag* tag = i->second;
 156
 157                 std::string name = tag->getString("name");
 158                 if (name.empty())
 159                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 160
 161                 std::string type = tag->getString("type");
 162                 OperIndex::iterator tblk = OperTypes.find(type);
 163                 if (tblk == OperTypes.end())
 164                         throw CoreException("Oper block " + name + " has missing type " + type);
 165                 if (oper_blocks.find(name) != oper_blocks.end())
 166                         throw CoreException("Duplicate oper block with name " + name + " at " + tag->getTagLocation());
 167
 168                 OperInfo* ifo = new OperInfo(type);
 169                 ifo->oper_block = tag;
 170                 ifo->type_block = tblk->second->type_block;
 171                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 172                 oper_blocks[name] = ifo;
 173         }
 174 }
 175
 176 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 177 {
 178         typedef std::map<std::string, ConnectClass*> ClassMap;
 179         ClassMap oldBlocksByMask;
 180         if (current)
 181         {
 182                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 183                 {
 184                         ConnectClass* c = *i;
 185                         if (c->name.compare(0, 8, "unnamed-", 8))
 186                         {
 187                                 oldBlocksByMask["n" + c->name] = c;
 188                         }
 189                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 190                         {
 191                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 192                                 typeMask += c->host;
 193                                 oldBlocksByMask[typeMask] = c;
 194                         }
 195                 }
 196         }
 197
 198         size_t blk_count = config_data.count("connect");
 199         if (blk_count == 0)
 200         {
 201                 // No connect blocks found; make a trivial default block
 202                 ConfigItems* items;
 203                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 204                 (*items)["allow"] = "*";
 205                 config_data.insert(std::make_pair("connect", tag));
 206                 blk_count = 1;
 207         }
 208
 209         Classes.resize(blk_count);
 210         std::map<std::string, size_t> names;
 211
 212         bool try_again = true;
 213         for(size_t tries = 0; try_again; tries++)
 214         {
 215                 try_again = false;
 216                 ConfigTagList tags = ConfTags("connect");
 217                 size_t i = 0;
 218                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 219                 {
 220                         ConfigTag* tag = it->second;
 221                         if (Classes[i])
 222                                 continue;
 223
 224                         ConnectClass* parent = NULL;
 225                         std::string parentName = tag->getString("parent");
 226                         if (!parentName.empty())
 227                         {
 228                                 std::map<std::string, size_t>::const_iterator parentIter = names.find(parentName);
 229                                 if (parentIter == names.end())
 230                                 {
 231                                         try_again = true;
 232                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 233                                         if (tries >= blk_count)
 234                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 235                                         continue;
 236                                 }
 237                                 parent = Classes[parentIter->second];
 238                         }
 239
 240                         std::string name = tag->getString("name");
 241                         std::string mask, typeMask;
 242                         char type;
 243
 244                         if (tag->readString("allow", mask, false))
 245                         {
 246                                 type = CC_ALLOW;
 247                                 typeMask = 'a' + mask;
 248                         }
 249                         else if (tag->readString("deny", mask, false))
 250                         {
 251                                 type = CC_DENY;
 252                                 typeMask = 'd' + mask;
 253                         }
 254                         else if (!name.empty())
 255                         {
 256                                 type = CC_NAMED;
 257                                 mask = name;
 258                                 typeMask = 'n' + mask;
 259                         }
 260                         else
 261                         {
 262                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 263                         }
 264
 265                         if (name.empty())
 266                         {
 267                                 name = "unnamed-" + ConvToStr(i);
 268                         }
 269                         else
 270                         {
 271                                 typeMask = 'n' + name;
 272                         }
 273
 274                         if (names.find(name) != names.end())
 275                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 276                         names[name] = i;
 277
 278                         ConnectClass* me = parent ?
 279                                 new ConnectClass(tag, type, mask, *parent) :
 280                                 new ConnectClass(tag, type, mask);
 281
 282                         me->name = name;
 283
 284                         me->registration_timeout = tag->getDuration("timeout", me->registration_timeout);
 285                         me->pingtime = tag->getDuration("pingfreq", me->pingtime);
 286                         std::string sendq;
 287                         if (tag->readString("sendq", sendq))
 288                         {
 289                                 // attempt to guess a good hard/soft sendq from a single value
 290                                 unsigned long value = strtoul(sendq.c_str(), NULL, 10);
 291                                 if (value > 16384)
 292                                         me->softsendqmax = value / 16;
 293                                 else
 294                                         me->softsendqmax = value;
 295                                 me->hardsendqmax = value * 8;
 296                         }
 297                         me->softsendqmax = tag->getUInt("softsendq", me->softsendqmax);
 298                         me->hardsendqmax = tag->getUInt("hardsendq", me->hardsendqmax);
 299                         me->recvqmax = tag->getUInt("recvq", me->recvqmax);
 300                         me->penaltythreshold = tag->getUInt("threshold", me->penaltythreshold);
 301                         me->commandrate = tag->getUInt("commandrate", me->commandrate);
 302                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 303                         me->maxlocal = tag->getUInt("localmax", me->maxlocal);
 304                         me->maxglobal = tag->getUInt("globalmax", me->maxglobal);
 305                         me->maxchans = tag->getUInt("maxchans", me->maxchans);
 306                         me->maxconnwarn = tag->getBool("maxconnwarn", me->maxconnwarn);
 307                         me->limit = tag->getUInt("limit", me->limit);
 308                         me->resolvehostnames = tag->getBool("resolvehostnames", me->resolvehostnames);
 309                         me->password = tag->getString("password", me->password);
 310
 311                         me->passwordhash = tag->getString("hash", me->passwordhash);
 312                         if (!me->password.empty() && (me->passwordhash.empty() || stdalgo::string::equalsci(me->passwordhash, "plaintext")))
 313                         {
 314                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEFAULT, "<connect> tag '%s' at %s contains an plain text password, this is insecure!",
 315                                         name.c_str(), tag->getTagLocation().c_str());
 316                         }
 317
 318                         std::string ports = tag->getString("port");
 319                         if (!ports.empty())
 320                         {
 321                                 irc::portparser portrange(ports, false);
 322                                 while (int port = portrange.GetToken())
 323                                         me->ports.insert(port);
 324                         }
 325
 326                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 327                         if (oldMask != oldBlocksByMask.end())
 328                         {
 329                                 ConnectClass* old = oldMask->second;
 330                                 oldBlocksByMask.erase(oldMask);
 331                                 old->Update(me);
 332                                 delete me;
 333                                 me = old;
 334                         }
 335                         Classes[i] = me;
 336                 }
 337         }
 338 }
 339
 340 static std::string GetServerHost()
 341 {
 342 #ifndef _WIN32
 343         char hostname[256];
 344         if (gethostname(hostname, sizeof(hostname)) == 0)
 345         {
 346                 std::string name(hostname);
 347                 if (name.find('.') == std::string::npos)
 348                         name.push_back('.');
 349
 350                 if (name.length() <= ServerInstance->Config->Limits.MaxHost && InspIRCd::IsHost(name))
 351                         return name;
 352         }
 353 #endif
 354         return "irc.example.com";
 355 }
 356
 357 void ServerConfig::Fill()
 358 {
 359         ConfigTag* options = ConfValue("options");
 360         ConfigTag* security = ConfValue("security");
 361         ConfigTag* server = ConfValue("server");
 362         if (sid.empty())
 363         {
 364                 ServerName = server->getString("name", GetServerHost(), InspIRCd::IsHost);
 365
 366                 sid = server->getString("id");
 367                 if (!sid.empty() && !InspIRCd::IsSID(sid))
 368                         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.");
 369
 370                 CaseMapping = options->getString("casemapping", "rfc1459", 1);
 371                 if (CaseMapping == "ascii")
 372                         national_case_insensitive_map = ascii_case_insensitive_map;
 373                 else if (CaseMapping == "rfc1459")
 374                         national_case_insensitive_map = rfc_case_insensitive_map;
 375                 else
 376                         throw CoreException("<options:casemapping> must be set to 'ascii', or 'rfc1459'");
 377         }
 378         else
 379         {
 380                 std::string name = server->getString("name");
 381                 if (!name.empty() && name != ServerName)
 382                         throw CoreException("You must restart to change the server name");
 383
 384                 std::string nsid = server->getString("id");
 385                 if (!nsid.empty() && nsid != sid)
 386                         throw CoreException("You must restart to change the server id");
 387
 388                 std::string casemapping = options->getString("casemapping");
 389                 // Ignore this value if CaseMapping is set to something the core doesn't provide (i.e., m_nationalchars).
 390                 if (!casemapping.empty() && casemapping != CaseMapping && (CaseMapping == "ascii" || CaseMapping == "rfc1459"))
 391                         throw CoreException("You must restart to change the server casemapping");
 392
 393         }
 394         SoftLimit = ConfValue("performance")->getUInt("softlimit", (SocketEngine::GetMaxFds() > 0 ? SocketEngine::GetMaxFds() : LONG_MAX), 10);
 395         CCOnConnect = ConfValue("performance")->getBool("clonesonconnect", true);
 396         MaxConn = ConfValue("performance")->getUInt("somaxconn", SOMAXCONN);
 397         TimeSkipWarn = ConfValue("performance")->getDuration("timeskipwarn", 2, 0, 30);
 398         XLineMessage = options->getString("xlinemessage", options->getString("moronbanner", "You're banned!"));
 399         ServerDesc = server->getString("description", "Configure Me", 1);
 400         Network = server->getString("network", "Network", 1);
 401         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240, 1024, 65534);
 402         CustomVersion = security->getString("customversion");
 403         HideBans = security->getBool("hidebans");
 404         HideServer = security->getString("hideserver", security->getString("hidewhois"));
 405         SyntaxHints = options->getBool("syntaxhints");
 406         FullHostInTopic = options->getBool("hostintopic");
 407         MaxTargets = security->getUInt("maxtargets", 20, 1, 31);
 408         DefaultModes = options->getString("defaultmodes", "not");
 409         PID = ConfValue("pid")->getString("file");
 410         MaxChans = ConfValue("channels")->getUInt("users", 20);
 411         OperMaxChans = ConfValue("channels")->getUInt("opers", 0);
 412         c_ipv4_range = ConfValue("cidr")->getUInt("ipv4clone", 32, 1, 32);
 413         c_ipv6_range = ConfValue("cidr")->getUInt("ipv6clone", 128, 1, 128);
 414         Limits = ServerLimits(ConfValue("limits"));
 415         Paths = ServerPaths(ConfValue("path"));
 416         NoSnoticeStack = options->getBool("nosnoticestack", false);
 417
 418         std::string defbind = options->getString("defaultbind");
 419         if (stdalgo::string::equalsci(defbind, "ipv4"))
 420         {
 421                 WildcardIPv6 = false;
 422         }
 423         else if (stdalgo::string::equalsci(defbind, "ipv6"))
 424         {
 425                 WildcardIPv6 = true;
 426         }
 427         else
 428         {
 429                 WildcardIPv6 = true;
 430                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 431                 if (socktest < 0)
 432                         WildcardIPv6 = false;
 433                 else
 434                         SocketEngine::Close(socktest);
 435         }
 436
 437         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 438         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 439         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 440         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 441
 442         const std::string restrictbannedusers = options->getString("restrictbannedusers", "yes", 1);
 443         if (stdalgo::string::equalsci(restrictbannedusers, "no"))
 444                 RestrictBannedUsers = ServerConfig::BUT_NORMAL;
 445         else if (stdalgo::string::equalsci(restrictbannedusers, "silent"))
 446                 RestrictBannedUsers = ServerConfig::BUT_RESTRICT_SILENT;
 447         else if (stdalgo::string::equalsci(restrictbannedusers, "yes"))
 448                 RestrictBannedUsers =  ServerConfig::BUT_RESTRICT_NOTIFY;
 449         else
 450                 throw CoreException(restrictbannedusers + " is an invalid <options:restrictbannedusers> value, at " + options->getTagLocation());
 451 }
 452
 453 // WARNING: it is not safe to use most of the codebase in this function, as it
 454 // will run in the config reader thread
 455 void ServerConfig::Read()
 456 {
 457         /* Load and parse the config file, if there are any errors then explode */
 458
 459         ParseStack stack(this);
 460         try
 461         {
 462                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 463         }
 464         catch (CoreException& err)
 465         {
 466                 valid = false;
 467                 errstr << err.GetReason() << std::endl;
 468         }
 469 }
 470
 471 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 472 {
 473         valid = true;
 474         if (old)
 475         {
 476                 /*
 477                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 478                  */
 479                 this->CaseMapping = old->CaseMapping;
 480                 this->ServerName = old->ServerName;
 481                 this->sid = old->sid;
 482                 this->cmdline = old->cmdline;
 483         }
 484
 485         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 486         try
 487         {
 488                 // Ensure the user has actually edited ther config.
 489                 ConfigTagList dietags = ConfTags("die");
 490                 if (dietags.first != dietags.second)
 491                 {
 492                         errstr << "Your configuration has not been edited correctly!" << std::endl;
 493                         for (ConfigIter iter = dietags.first; iter != dietags.second; ++iter)
 494                         {
 495                                 ConfigTag* tag = iter->second;
 496                                 const std::string reason = tag->getString("reason", "You left a <die> tag in your config", 1);
 497                                 errstr << reason <<  " (at " << tag->getTagLocation() << ")" << std::endl;
 498                         }
 499                 }
 500
 501                 Fill();
 502
 503                 // Handle special items
 504                 CrossCheckOperClassType();
 505                 CrossCheckConnectBlocks(old);
 506         }
 507         catch (CoreException &ce)
 508         {
 509                 errstr << ce.GetReason() << std::endl;
 510         }
 511
 512         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 513         valid = errstr.str().empty();
 514
 515         // write once here, to try it out and make sure its ok
 516         if (valid)
 517                 ServerInstance->WritePID(this->PID, !old);
 518
 519         ConfigTagList binds = ConfTags("bind");
 520         if (binds.first == binds.second)
 521                  errstr << "Possible configuration error: you have not defined any <bind> blocks." << std::endl
 522                          << "You will need to do this if you want clients to be able to connect!" << std::endl;
 523
 524         if (old && valid)
 525         {
 526                 // On first run, ports are bound later on
 527                 FailedPortList pl;
 528                 ServerInstance->BindPorts(pl);
 529                 if (!pl.empty())
 530                 {
 531                         errstr << "Warning! Some of your listener" << (pl.size() == 1 ? "s" : "") << " failed to bind:" << std::endl;
 532                         for (FailedPortList::const_iterator iter = pl.begin(); iter != pl.end(); ++iter)
 533                         {
 534                                 const FailedPort& fp = *iter;
 535                                 errstr << "  " << fp.sa.str() << ": " << strerror(fp.error) << std::endl
 536                                         << "  " << "Created from <bind> tag at " << fp.tag->getTagLocation() << std::endl;
 537                         }
 538                 }
 539         }
 540
 541         User* user = useruid.empty() ? NULL : ServerInstance->FindUUID(useruid);
 542
 543         if (!valid)
 544         {
 545                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "There were errors in your configuration file:");
 546                 Classes.clear();
 547         }
 548
 549         while (errstr.good())
 550         {
 551                 std::string line;
 552                 getline(errstr, line, '\n');
 553                 if (line.empty())
 554                         continue;
 555                 // On startup, print out to console (still attached at this point)
 556                 if (!old)
 557                         std::cout << line << std::endl;
 558                 // If a user is rehashing, tell them directly
 559                 if (user)
 560                         user->WriteRemoteNotice(InspIRCd::Format("*** %s", line.c_str()));
 561                 // Also tell opers
 562                 ServerInstance->SNO->WriteGlobalSno('a', line);
 563         }
 564
 565         errstr.clear();
 566         errstr.str(std::string());
 567
 568         /* No old configuration -> initial boot, nothing more to do here */
 569         if (!old)
 570         {
 571                 if (!valid)
 572                 {
 573                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 574                 }
 575
 576                 return;
 577         }
 578
 579
 580         // If there were errors processing configuration, don't touch modules.
 581         if (!valid)
 582                 return;
 583
 584         ApplyModules(user);
 585
 586         if (user)
 587                 user->WriteRemoteNotice("*** Successfully rehashed server.");
 588         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 589 }
 590
 591 void ServerConfig::ApplyModules(User* user)
 592 {
 593         std::vector<std::string> added_modules;
 594         ModuleManager::ModuleMap removed_modules = ServerInstance->Modules->GetModules();
 595
 596         ConfigTagList tags = ConfTags("module");
 597         for(ConfigIter i = tags.first; i != tags.second; ++i)
 598         {
 599                 ConfigTag* tag = i->second;
 600                 std::string name;
 601                 if (tag->readString("name", name))
 602                 {
 603                         name = ModuleManager::ExpandModName(name);
 604                         // if this module is already loaded, the erase will succeed, so we need do nothing
 605                         // otherwise, we need to add the module (which will be done later)
 606                         if (removed_modules.erase(name) == 0)
 607                                 added_modules.push_back(name);
 608                 }
 609         }
 610
 611         for (ModuleManager::ModuleMap::iterator i = removed_modules.begin(); i != removed_modules.end(); ++i)
 612         {
 613                 const std::string& modname = i->first;
 614                 // Don't remove core_*.so, just remove m_*.so
 615                 if (InspIRCd::Match(modname, "core_*.so", ascii_case_insensitive_map))
 616                         continue;
 617                 if (ServerInstance->Modules->Unload(i->second))
 618                 {
 619                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s", modname.c_str());
 620
 621                         if (user)
 622                                 user->WriteNumeric(RPL_UNLOADEDMODULE, modname, InspIRCd::Format("Module %s successfully unloaded.", modname.c_str()));
 623                         else
 624                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", modname.c_str());
 625                 }
 626                 else
 627                 {
 628                         if (user)
 629                                 user->WriteNumeric(ERR_CANTUNLOADMODULE, modname, InspIRCd::Format("Failed to unload module %s: %s", modname.c_str(), ServerInstance->Modules->LastError().c_str()));
 630                         else
 631                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", modname.c_str(), ServerInstance->Modules->LastError().c_str());
 632                 }
 633         }
 634
 635         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 636         {
 637                 // Skip modules which are already loaded.
 638                 if (ServerInstance->Modules->Find(*adding))
 639                         continue;
 640
 641                 if (ServerInstance->Modules->Load(*adding))
 642                 {
 643                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 644                         if (user)
 645                                 user->WriteNumeric(RPL_LOADEDMODULE, *adding, InspIRCd::Format("Module %s successfully loaded.", adding->c_str()));
 646                         else
 647                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 648                 }
 649                 else
 650                 {
 651                         if (user)
 652                                 user->WriteNumeric(ERR_CANTLOADMODULE, *adding, InspIRCd::Format("Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str()));
 653                         else
 654                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 655                 }
 656         }
 657 }
 658
 659 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 660 {
 661         ConfigTagList found = config_data.equal_range(tag);
 662         if (found.first == found.second)
 663                 return EmptyTag;
 664         ConfigTag* rv = found.first->second;
 665         found.first++;
 666         if (found.first != found.second)
 667                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 668                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 669         return rv;
 670 }
 671
 672 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 673 {
 674         return config_data.equal_range(tag);
 675 }
 676
 677 std::string ServerConfig::Escape(const std::string& str, bool xml)
 678 {
 679         std::string escaped;
 680         for (std::string::const_iterator it = str.begin(); it != str.end(); ++it)
 681         {
 682                 switch (*it)
 683                 {
 684                         case '"':
 685                                 escaped += xml ? "&quot;" : "\"";
 686                                 break;
 687                         case '&':
 688                                 escaped += xml ? "&amp;" : "&";
 689                                 break;
 690                         case '\\':
 691                                 escaped += xml ? "\\" : "\\\\";
 692                                 break;
 693                         default:
 694                                 escaped += *it;
 695                                 break;
 696                 }
 697         }
 698         return escaped;
 699 }
 700
 701 void ConfigReaderThread::Run()
 702 {
 703         Config->Read();
 704         done = true;
 705 }
 706
 707 void ConfigReaderThread::Finish()
 708 {
 709         ServerConfig* old = ServerInstance->Config;
 710         ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "Switching to new configuration...");
 711         ServerInstance->Config = this->Config;
 712         Config->Apply(old, TheUserUID);
 713
 714         if (Config->valid)
 715         {
 716                 /*
 717                  * Apply the changed configuration from the rehash.
 718                  *
 719                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 720                  * thoroughly!!!
 721                  */
 722                 ServerInstance->Users.RehashCloneCounts();
 723                 ServerInstance->XLines->CheckELines();
 724                 ServerInstance->XLines->ApplyLines();
 725                 User* user = ServerInstance->FindUUID(TheUserUID);
 726
 727                 ConfigStatus status(user);
 728                 const ModuleManager::ModuleMap& mods = ServerInstance->Modules->GetModules();
 729                 for (ModuleManager::ModuleMap::const_iterator i = mods.begin(); i != mods.end(); ++i)
 730                 {
 731                         try
 732                         {
 733                                 ServerInstance->Logs->Log("MODULE", LOG_DEBUG, "Rehashing " + i->first);
 734                                 i->second->ReadConfig(status);
 735                         }
 736                         catch (CoreException& modex)
 737                         {
 738                                 ServerInstance->Logs->Log("MODULE", LOG_DEFAULT, "Exception caught: " + modex.GetReason());
 739                                 if (user)
 740                                         user->WriteNotice(i->first + ": " + modex.GetReason());
 741                         }
 742                 }
 743
 744                 // The description of this server may have changed - update it for WHOIS etc.
 745                 ServerInstance->FakeClient->server->description = Config->ServerDesc;
 746
 747                 ServerInstance->ISupport.Build();
 748
 749                 ServerInstance->Logs->CloseLogs();
 750                 ServerInstance->Logs->OpenFileLogs();
 751
 752                 if (Config->RawLog && !old->RawLog)
 753                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 754
 755                 Config = old;
 756         }
 757         else
 758         {
 759                 // whoops, abort!
 760                 ServerInstance->Config = old;
 761         }
 762 }