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