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