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