src/configreader.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2007-2009 Robin Burchell <robin+git@viroteck.net>
   6  *   Copyright (C) 2006-2009 Dennis Friis <peavey@inspircd.org>
   7  *   Copyright (C) 2006-2008 Craig Edwards <craigedwards@brainbox.cc>
   8  *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
   9  *   Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
  10  *
  11  * This file is part of InspIRCd.  InspIRCd is free software: you can
  12  * redistribute it and/or modify it under the terms of the GNU General Public
  13  * License as published by the Free Software Foundation, version 2.
  14  *
  15  * This program is distributed in the hope that it will be useful, but WITHOUT
  16  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  17  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  18  * details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22  */
  23
  24
  25 #include "inspircd.h"
  26 #include "xline.h"
  27 #include "listmode.h"
  28 #include "exitcodes.h"
  29 #include "configparser.h"
  30 #include <iostream>
  31
  32 ServerLimits::ServerLimits(ConfigTag* tag)
  33         : NickMax(tag->getUInt("maxnick", 30))
  34         , ChanMax(tag->getUInt("maxchan", 64))
  35         , MaxModes(tag->getUInt("maxmodes", 20))
  36         , IdentMax(tag->getUInt("maxident", 10))
  37         , MaxQuit(tag->getUInt("maxquit", 255))
  38         , MaxTopic(tag->getUInt("maxtopic", 307))
  39         , MaxKick(tag->getUInt("maxkick", 255))
  40         , MaxReal(tag->getUInt("maxreal", tag->getUInt("maxgecos", 128)))
  41         , MaxAway(tag->getUInt("maxaway", 200))
  42         , MaxLine(tag->getUInt("maxline", 512))
  43         , MaxHost(tag->getUInt("maxhost", 64))
  44 {
  45 }
  46
  47 ServerConfig::ServerPaths::ServerPaths(ConfigTag* tag)
  48         : Config(tag->getString("configdir", INSPIRCD_CONFIG_PATH))
  49         , Data(tag->getString("datadir", INSPIRCD_DATA_PATH))
  50         , Log(tag->getString("logdir", INSPIRCD_LOG_PATH))
  51         , Module(tag->getString("moduledir", INSPIRCD_MODULE_PATH))
  52 {
  53 }
  54
  55 static ConfigTag* CreateEmptyTag()
  56 {
  57         ConfigItems* items;
  58         return ConfigTag::create("empty", "<auto>", 0, items);
  59 }
  60
  61 ServerConfig::ServerConfig()
  62         : EmptyTag(CreateEmptyTag())
  63         , Limits(EmptyTag)
  64         , Paths(EmptyTag)
  65         , RawLog(false)
  66         , NoSnoticeStack(false)
  67 {
  68 }
  69
  70 ServerConfig::~ServerConfig()
  71 {
  72         delete EmptyTag;
  73 }
  74
  75 bool ServerConfig::ApplyDisabledCommands()
  76 {
  77         // Enable everything first.
  78         const CommandParser::CommandMap& commands = ServerInstance->Parser.GetCommands();
  79         for (CommandParser::CommandMap::const_iterator x = commands.begin(); x != commands.end(); ++x)
  80                 x->second->Disable(false);
  81
  82         // Now disable the commands specified in the config.
  83         std::string command;
  84         irc::spacesepstream commandlist(ConfValue("disabled")->getString("commands"));
  85         while (commandlist.GetToken(command))
  86         {
  87                 Command* handler = ServerInstance->Parser.GetHandler(command);
  88                 if (!handler)
  89                 {
  90                         ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "Unable to disable the %s command as it does not exist!", command.c_str());
  91                         continue;
  92                 }
  93
  94                 ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "The %s command has been disabled", command.c_str());
  95                 handler->Disable(true);
  96         }
  97         return true;
  98 }
  99
 100 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
 101 {
 102         ConfigTagList tags = conf->ConfTags(tag);
 103         for(ConfigIter i = tags.first; i != tags.second; ++i)
 104         {
 105                 ConfigTag* ctag = i->second;
 106                 std::string mask;
 107                 if (!ctag->readString(key, mask))
 108                         throw CoreException("<"+tag+":"+key+"> missing at " + ctag->getTagLocation());
 109                 std::string reason = ctag->getString("reason", "<Config>");
 110                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
 111                 if (!ServerInstance->XLines->AddLine(xl, NULL))
 112                         delete xl;
 113         }
 114 }
 115
 116 typedef std::map<std::string, ConfigTag*> LocalIndex;
 117 void ServerConfig::CrossCheckOperClassType()
 118 {
 119         LocalIndex operclass;
 120         ConfigTagList tags = ConfTags("class");
 121         for(ConfigIter i = tags.first; i != tags.second; ++i)
 122         {
 123                 ConfigTag* tag = i->second;
 124                 std::string name = tag->getString("name");
 125                 if (name.empty())
 126                         throw CoreException("<class:name> missing from tag at " + tag->getTagLocation());
 127                 if (operclass.find(name) != operclass.end())
 128                         throw CoreException("Duplicate class block with name " + name + " at " + tag->getTagLocation());
 129                 operclass[name] = tag;
 130         }
 131         tags = ConfTags("type");
 132         for(ConfigIter i = tags.first; i != tags.second; ++i)
 133         {
 134                 ConfigTag* tag = i->second;
 135                 std::string name = tag->getString("name");
 136                 if (name.empty())
 137                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
 138                 if (OperTypes.find(name) != OperTypes.end())
 139                         throw CoreException("Duplicate type block with name " + name + " at " + tag->getTagLocation());
 140
 141                 OperInfo* ifo = new OperInfo(name);
 142                 OperTypes[name] = ifo;
 143                 ifo->type_block = tag;
 144
 145                 std::string classname;
 146                 irc::spacesepstream str(tag->getString("classes"));
 147                 while (str.GetToken(classname))
 148                 {
 149                         LocalIndex::iterator cls = operclass.find(classname);
 150                         if (cls == operclass.end())
 151                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 152                         ifo->class_blocks.push_back(cls->second);
 153                 }
 154         }
 155
 156         tags = ConfTags("oper");
 157         for(ConfigIter i = tags.first; i != tags.second; ++i)
 158         {
 159                 ConfigTag* tag = i->second;
 160
 161                 std::string name = tag->getString("name");
 162                 if (name.empty())
 163                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 164
 165                 std::string type = tag->getString("type");
 166                 OperIndex::iterator tblk = OperTypes.find(type);
 167                 if (tblk == OperTypes.end())
 168                         throw CoreException("Oper block " + name + " has missing type " + type);
 169                 if (oper_blocks.find(name) != oper_blocks.end())
 170                         throw CoreException("Duplicate oper block with name " + name + " at " + tag->getTagLocation());
 171
 172                 OperInfo* ifo = new OperInfo(type);
 173                 ifo->oper_block = tag;
 174                 ifo->type_block = tblk->second->type_block;
 175                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 176                 oper_blocks[name] = ifo;
 177         }
 178 }
 179
 180 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 181 {
 182         typedef std::map<std::string, ConnectClass*> ClassMap;
 183         ClassMap oldBlocksByMask;
 184         if (current)
 185         {
 186                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 187                 {
 188                         ConnectClass* c = *i;
 189                         if (c->name.compare(0, 8, "unnamed-", 8))
 190                         {
 191                                 oldBlocksByMask["n" + c->name] = c;
 192                         }
 193                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 194                         {
 195                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 196                                 typeMask += c->host;
 197                                 oldBlocksByMask[typeMask] = c;
 198                         }
 199                 }
 200         }
 201
 202         size_t blk_count = config_data.count("connect");
 203         if (blk_count == 0)
 204         {
 205                 // No connect blocks found; make a trivial default block
 206                 ConfigItems* items;
 207                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 208                 (*items)["allow"] = "*";
 209                 config_data.insert(std::make_pair("connect", tag));
 210                 blk_count = 1;
 211         }
 212
 213         Classes.resize(blk_count);
 214         std::map<std::string, size_t> names;
 215
 216         bool try_again = true;
 217         for(size_t tries = 0; try_again; tries++)
 218         {
 219                 try_again = false;
 220                 ConfigTagList tags = ConfTags("connect");
 221                 size_t i = 0;
 222                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 223                 {
 224                         ConfigTag* tag = it->second;
 225                         if (Classes[i])
 226                                 continue;
 227
 228                         ConnectClass* parent = NULL;
 229                         std::string parentName = tag->getString("parent");
 230                         if (!parentName.empty())
 231                         {
 232                                 std::map<std::string, size_t>::const_iterator parentIter = names.find(parentName);
 233                                 if (parentIter == names.end())
 234                                 {
 235                                         try_again = true;
 236                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 237                                         if (tries >= blk_count)
 238                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 239                                         continue;
 240                                 }
 241                                 parent = Classes[parentIter->second];
 242                         }
 243
 244                         std::string name = tag->getString("name");
 245                         std::string mask, typeMask;
 246                         char type;
 247
 248                         if (tag->readString("allow", mask, false))
 249                         {
 250                                 type = CC_ALLOW;
 251                                 typeMask = 'a' + mask;
 252                         }
 253                         else if (tag->readString("deny", mask, false))
 254                         {
 255                                 type = CC_DENY;
 256                                 typeMask = 'd' + mask;
 257                         }
 258                         else if (!name.empty())
 259                         {
 260                                 type = CC_NAMED;
 261                                 mask = name;
 262                                 typeMask = 'n' + mask;
 263                         }
 264                         else
 265                         {
 266                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 267                         }
 268
 269                         if (name.empty())
 270                         {
 271                                 name = "unnamed-" + ConvToStr(i);
 272                         }
 273                         else
 274                         {
 275                                 typeMask = 'n' + name;
 276                         }
 277
 278                         if (names.find(name) != names.end())
 279                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 280                         names[name] = i;
 281
 282                         ConnectClass* me = parent ?
 283                                 new ConnectClass(tag, type, mask, *parent) :
 284                                 new ConnectClass(tag, type, mask);
 285
 286                         me->name = name;
 287
 288                         me->registration_timeout = tag->getDuration("timeout", me->registration_timeout);
 289                         me->pingtime = tag->getDuration("pingfreq", me->pingtime);
 290                         std::string sendq;
 291                         if (tag->readString("sendq", sendq))
 292                         {
 293                                 // attempt to guess a good hard/soft sendq from a single value
 294                                 unsigned long value = strtoul(sendq.c_str(), NULL, 10);
 295                                 if (value > 16384)
 296                                         me->softsendqmax = value / 16;
 297                                 else
 298                                         me->softsendqmax = value;
 299                                 me->hardsendqmax = value * 8;
 300                         }
 301                         me->softsendqmax = tag->getUInt("softsendq", me->softsendqmax);
 302                         me->hardsendqmax = tag->getUInt("hardsendq", me->hardsendqmax);
 303                         me->recvqmax = tag->getUInt("recvq", me->recvqmax);
 304                         me->penaltythreshold = tag->getUInt("threshold", me->penaltythreshold);
 305                         me->commandrate = tag->getUInt("commandrate", me->commandrate);
 306                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 307                         me->maxlocal = tag->getUInt("localmax", me->maxlocal);
 308                         me->maxglobal = tag->getUInt("globalmax", me->maxglobal);
 309                         me->maxchans = tag->getUInt("maxchans", me->maxchans);
 310                         me->maxconnwarn = tag->getBool("maxconnwarn", me->maxconnwarn);
 311                         me->limit = tag->getUInt("limit", me->limit);
 312                         me->resolvehostnames = tag->getBool("resolvehostnames", me->resolvehostnames);
 313
 314                         std::string ports = tag->getString("port");
 315                         if (!ports.empty())
 316                         {
 317                                 irc::portparser portrange(ports, false);
 318                                 while (int port = portrange.GetToken())
 319                                         me->ports.insert(port);
 320                         }
 321
 322                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 323                         if (oldMask != oldBlocksByMask.end())
 324                         {
 325                                 ConnectClass* old = oldMask->second;
 326                                 oldBlocksByMask.erase(oldMask);
 327                                 old->Update(me);
 328                                 delete me;
 329                                 me = old;
 330                         }
 331                         Classes[i] = me;
 332                 }
 333         }
 334 }
 335
 336 /** Represents a deprecated configuration tag.
 337  */
 338 struct DeprecatedConfig
 339 {
 340         /** Tag name. */
 341         std::string tag;
 342
 343         /** Attribute key. */
 344         std::string key;
 345
 346         /** Attribute value. */
 347         std::string value;
 348
 349         /** Reason for deprecation. */
 350         std::string reason;
 351 };
 352
 353 static const DeprecatedConfig ChangedConfig[] = {
 354         { "bind",        "transport",   "",                 "has been moved to <bind:ssl> as of 2.0" },
 355         { "die",         "value",       "",                 "you need to reread your config" },
 356         { "gnutls",      "starttls",    "",                 "has been replaced with m_starttls as of 3.0" },
 357         { "link",        "autoconnect", "",                 "2.0+ does not use this attribute - define <autoconnect> tags instead" },
 358         { "link",        "transport",   "",                 "has been moved to <link:ssl> as of 2.0" },
 359         { "module",      "name",        "m_chanprotect.so", "has been replaced with m_customprefix as of 3.0" },
 360         { "module",      "name",        "m_halfop.so",      "has been replaced with m_customprefix as of 3.0" },
 361         { "options",     "cyclehosts",  "",                 "has been replaced with m_hostcycle as of 3.0" },
 362         { "performance", "nouserdns",   "",                 "has been moved to <connect:resolvehostnames> as of 3.0" }
 363 };
 364
 365 void ServerConfig::Fill()
 366 {
 367         ConfigTag* options = ConfValue("options");
 368         ConfigTag* security = ConfValue("security");
 369         ConfigTag* server = ConfValue("server");
 370         if (sid.empty())
 371         {
 372                 ServerName = server->getString("name", "irc.example.com", InspIRCd::IsHost);
 373
 374                 sid = server->getString("id");
 375                 if (!sid.empty() && !InspIRCd::IsSID(sid))
 376                         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.");
 377
 378                 CaseMapping = options->getString("casemapping", "rfc1459");
 379                 if (CaseMapping == "ascii")
 380                         national_case_insensitive_map = ascii_case_insensitive_map;
 381                 else if (CaseMapping == "rfc1459")
 382                         national_case_insensitive_map = rfc_case_insensitive_map;
 383                 else
 384                         throw CoreException("<options:casemapping> must be set to 'ascii', or 'rfc1459'");
 385         }
 386         else
 387         {
 388                 std::string name = server->getString("name");
 389                 if (!name.empty() && name != ServerName)
 390                         throw CoreException("You must restart to change the server name");
 391
 392                 std::string nsid = server->getString("id");
 393                 if (!nsid.empty() && nsid != sid)
 394                         throw CoreException("You must restart to change the server id");
 395
 396                 std::string casemapping = options->getString("casemapping");
 397                 if (!casemapping.empty() && casemapping != CaseMapping)
 398                         throw CoreException("You must restart to change the server casemapping");
 399
 400         }
 401         SoftLimit = ConfValue("performance")->getUInt("softlimit", (SocketEngine::GetMaxFds() > 0 ? SocketEngine::GetMaxFds() : LONG_MAX), 10);
 402         CCOnConnect = ConfValue("performance")->getBool("clonesonconnect", true);
 403         MaxConn = ConfValue("performance")->getUInt("somaxconn", SOMAXCONN);
 404         XLineMessage = options->getString("xlinemessage", options->getString("moronbanner", "You're banned!"));
 405         ServerDesc = server->getString("description", "Configure Me");
 406         Network = server->getString("network", "Network");
 407         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240, 1024, 65534);
 408         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 409         UserStats = security->getString("userstats");
 410         CustomVersion = security->getString("customversion");
 411         HideSplits = security->getBool("hidesplits");
 412         HideBans = security->getBool("hidebans");
 413         HideServer = security->getString("hideserver", security->getString("hidewhois"));
 414         HideKillsServer = security->getString("hidekills");
 415         HideULineKills = security->getBool("hideulinekills");
 416         GenericOper = security->getBool("genericoper");
 417         SyntaxHints = options->getBool("syntaxhints");
 418         CycleHostsFromUser = options->getBool("cyclehostsfromuser");
 419         FullHostInTopic = options->getBool("hostintopic");
 420         MaxTargets = security->getUInt("maxtargets", 20, 1, 31);
 421         DefaultModes = options->getString("defaultmodes", "not");
 422         PID = ConfValue("pid")->getString("file");
 423         MaxChans = ConfValue("channels")->getUInt("users", 20);
 424         OperMaxChans = ConfValue("channels")->getUInt("opers", 0);
 425         c_ipv4_range = ConfValue("cidr")->getUInt("ipv4clone", 32, 1, 32);
 426         c_ipv6_range = ConfValue("cidr")->getUInt("ipv6clone", 128, 1, 128);
 427         Limits = ServerLimits(ConfValue("limits"));
 428         Paths = ServerPaths(ConfValue("path"));
 429         NoSnoticeStack = options->getBool("nosnoticestack", false);
 430
 431         std::string defbind = options->getString("defaultbind");
 432         if (stdalgo::string::equalsci(defbind, "ipv4"))
 433         {
 434                 WildcardIPv6 = false;
 435         }
 436         else if (stdalgo::string::equalsci(defbind, "ipv6"))
 437         {
 438                 WildcardIPv6 = true;
 439         }
 440         else
 441         {
 442                 WildcardIPv6 = true;
 443                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 444                 if (socktest < 0)
 445                         WildcardIPv6 = false;
 446                 else
 447                         SocketEngine::Close(socktest);
 448         }
 449
 450         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 451         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 452         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 453         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 454
 455         const std::string restrictbannedusers = options->getString("restrictbannedusers", "yes");
 456         if (stdalgo::string::equalsci(restrictbannedusers, "no"))
 457                 RestrictBannedUsers = ServerConfig::BUT_NORMAL;
 458         else if (stdalgo::string::equalsci(restrictbannedusers, "silent"))
 459                 RestrictBannedUsers = ServerConfig::BUT_RESTRICT_SILENT;
 460         else if (stdalgo::string::equalsci(restrictbannedusers, "yes"))
 461                 RestrictBannedUsers =  ServerConfig::BUT_RESTRICT_NOTIFY;
 462         else
 463                 throw CoreException(restrictbannedusers + " is an invalid <options:restrictbannedusers> value, at " + options->getTagLocation());
 464
 465         DisabledUModes.reset();
 466         std::string modes = ConfValue("disabled")->getString("usermodes");
 467         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 468         {
 469                 // Complain when the character is not a valid mode character.
 470                 if (!ModeParser::IsModeChar(*p))
 471                         throw CoreException("Invalid usermode " + std::string(1, *p) + " was found.");
 472                 DisabledUModes.set(*p - 'A');
 473         }
 474
 475         DisabledCModes.reset();
 476         modes = ConfValue("disabled")->getString("chanmodes");
 477         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 478         {
 479                 if (!ModeParser::IsModeChar(*p))
 480                         throw CoreException("Invalid chanmode " + std::string(1, *p) + " was found.");
 481                 DisabledCModes.set(*p - 'A');
 482         }
 483 }
 484
 485 // WARNING: it is not safe to use most of the codebase in this function, as it
 486 // will run in the config reader thread
 487 void ServerConfig::Read()
 488 {
 489         /* Load and parse the config file, if there are any errors then explode */
 490
 491         ParseStack stack(this);
 492         try
 493         {
 494                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 495         }
 496         catch (CoreException& err)
 497         {
 498                 valid = false;
 499                 errstr << err.GetReason() << std::endl;
 500         }
 501 }
 502
 503 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 504 {
 505         valid = true;
 506         if (old)
 507         {
 508                 /*
 509                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 510                  */
 511                 this->CaseMapping = old->CaseMapping;
 512                 this->ServerName = old->ServerName;
 513                 this->sid = old->sid;
 514                 this->cmdline = old->cmdline;
 515         }
 516
 517         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 518         try
 519         {
 520                 for (unsigned long index = 0; index * sizeof(DeprecatedConfig) < sizeof(ChangedConfig); index++)
 521                 {
 522                         std::string value;
 523                         ConfigTagList tags = ConfTags(ChangedConfig[index].tag);
 524                         for(ConfigIter i = tags.first; i != tags.second; ++i)
 525                         {
 526                                 if (i->second->readString(ChangedConfig[index].key, value, true)
 527                                         && (ChangedConfig[index].value.empty() || value == ChangedConfig[index].value))
 528                                 {
 529                                         errstr << "Your configuration contains a deprecated value: <"  << ChangedConfig[index].tag;
 530                                         if (ChangedConfig[index].value.empty())
 531                                         {
 532                                                 errstr << ':' << ChangedConfig[index].key;
 533                                         }
 534                                         else
 535                                         {
 536                                                 errstr << ' ' << ChangedConfig[index].key << "=\"" << ChangedConfig[index].value << "\"";
 537                                         }
 538                                         errstr << "> - " << ChangedConfig[index].reason << " (at " << i->second->getTagLocation() << ")" << std::endl;
 539                                 }
 540                         }
 541                 }
 542
 543                 Fill();
 544
 545                 // Handle special items
 546                 CrossCheckOperClassType();
 547                 CrossCheckConnectBlocks(old);
 548         }
 549         catch (CoreException &ce)
 550         {
 551                 errstr << ce.GetReason() << std::endl;
 552         }
 553
 554         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 555         valid = errstr.str().empty();
 556
 557         // write once here, to try it out and make sure its ok
 558         if (valid)
 559                 ServerInstance->WritePID(this->PID, !old);
 560
 561         ConfigTagList binds = ConfTags("bind");
 562         if (binds.first == binds.second)
 563                  errstr << "Possible configuration error: you have not defined any <bind> blocks." << std::endl
 564                          << "You will need to do this if you want clients to be able to connect!" << std::endl;
 565
 566         if (old && valid)
 567         {
 568                 // On first run, ports are bound later on
 569                 FailedPortList pl;
 570                 ServerInstance->BindPorts(pl);
 571                 if (pl.size())
 572                 {
 573                         errstr << "Not all your client ports could be bound." << std::endl
 574                                 << "The following port(s) failed to bind:" << std::endl;
 575
 576                         int j = 1;
 577                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 578                         {
 579                                 errstr << j << ".\tAddress: " << i->first.str() << "\tReason: " << strerror(i->second) << std::endl;
 580                         }
 581                 }
 582         }
 583
 584         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 585
 586         if (!valid)
 587         {
 588                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "There were errors in your configuration file:");
 589                 Classes.clear();
 590         }
 591
 592         while (errstr.good())
 593         {
 594                 std::string line;
 595                 getline(errstr, line, '\n');
 596                 if (line.empty())
 597                         continue;
 598                 // On startup, print out to console (still attached at this point)
 599                 if (!old)
 600                         std::cout << line << std::endl;
 601                 // If a user is rehashing, tell them directly
 602                 if (user)
 603                         user->WriteRemoteNotice(InspIRCd::Format("*** %s", line.c_str()));
 604                 // Also tell opers
 605                 ServerInstance->SNO->WriteGlobalSno('a', line);
 606         }
 607
 608         errstr.clear();
 609         errstr.str(std::string());
 610
 611         // Re-parse our MOTD and RULES files for colors -- Justasic
 612         for (ClassVector::const_iterator it = this->Classes.begin(), it_end = this->Classes.end(); it != it_end; ++it)
 613         {
 614                 ConfigTag *tag = (*it)->config;
 615
 616                 ConfigFileCache::iterator file = this->Files.find(tag->getString("motd", "motd"));
 617                 if (file != this->Files.end())
 618                         InspIRCd::ProcessColors(file->second);
 619         }
 620
 621         /* No old configuration -> initial boot, nothing more to do here */
 622         if (!old)
 623         {
 624                 if (!valid)
 625                 {
 626                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 627                 }
 628
 629                 return;
 630         }
 631
 632
 633         // If there were errors processing configuration, don't touch modules.
 634         if (!valid)
 635                 return;
 636
 637         ApplyModules(user);
 638
 639         if (user)
 640                 user->WriteRemoteNotice("*** Successfully rehashed server.");
 641         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 642 }
 643
 644 void ServerConfig::ApplyModules(User* user)
 645 {
 646         std::vector<std::string> added_modules;
 647         ModuleManager::ModuleMap removed_modules = ServerInstance->Modules->GetModules();
 648
 649         ConfigTagList tags = ConfTags("module");
 650         for(ConfigIter i = tags.first; i != tags.second; ++i)
 651         {
 652                 ConfigTag* tag = i->second;
 653                 std::string name;
 654                 if (tag->readString("name", name))
 655                 {
 656                         name = ModuleManager::ExpandModName(name);
 657                         // if this module is already loaded, the erase will succeed, so we need do nothing
 658                         // otherwise, we need to add the module (which will be done later)
 659                         if (removed_modules.erase(name) == 0)
 660                                 added_modules.push_back(name);
 661                 }
 662         }
 663
 664         for (ModuleManager::ModuleMap::iterator i = removed_modules.begin(); i != removed_modules.end(); ++i)
 665         {
 666                 const std::string& modname = i->first;
 667                 // Don't remove core_*.so, just remove m_*.so
 668                 if (InspIRCd::Match(modname, "core_*.so", ascii_case_insensitive_map))
 669                         continue;
 670                 if (ServerInstance->Modules->Unload(i->second))
 671                 {
 672                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s", modname.c_str());
 673
 674                         if (user)
 675                                 user->WriteNumeric(RPL_UNLOADEDMODULE, modname, InspIRCd::Format("Module %s successfully unloaded.", modname.c_str()));
 676                         else
 677                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", modname.c_str());
 678                 }
 679                 else
 680                 {
 681                         if (user)
 682                                 user->WriteNumeric(ERR_CANTUNLOADMODULE, modname, InspIRCd::Format("Failed to unload module %s: %s", modname.c_str(), ServerInstance->Modules->LastError().c_str()));
 683                         else
 684                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", modname.c_str(), ServerInstance->Modules->LastError().c_str());
 685                 }
 686         }
 687
 688         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 689         {
 690                 // Skip modules which are already loaded.
 691                 if (ServerInstance->Modules->Find(*adding))
 692                         continue;
 693
 694                 if (ServerInstance->Modules->Load(*adding))
 695                 {
 696                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 697                         if (user)
 698                                 user->WriteNumeric(RPL_LOADEDMODULE, *adding, InspIRCd::Format("Module %s successfully loaded.", adding->c_str()));
 699                         else
 700                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 701                 }
 702                 else
 703                 {
 704                         if (user)
 705                                 user->WriteNumeric(ERR_CANTLOADMODULE, *adding, InspIRCd::Format("Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str()));
 706                         else
 707                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 708                 }
 709         }
 710 }
 711
 712 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 713 {
 714         ConfigTagList found = config_data.equal_range(tag);
 715         if (found.first == found.second)
 716                 return EmptyTag;
 717         ConfigTag* rv = found.first->second;
 718         found.first++;
 719         if (found.first != found.second)
 720                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 721                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 722         return rv;
 723 }
 724
 725 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 726 {
 727         return config_data.equal_range(tag);
 728 }
 729
 730 std::string ServerConfig::Escape(const std::string& str, bool xml)
 731 {
 732         std::string escaped;
 733         for (std::string::const_iterator it = str.begin(); it != str.end(); ++it)
 734         {
 735                 switch (*it)
 736                 {
 737                         case '"':
 738                                 escaped += xml ? "&quot;" : "\"";
 739                                 break;
 740                         case '&':
 741                                 escaped += xml ? "&amp;" : "&";
 742                                 break;
 743                         case '\\':
 744                                 escaped += xml ? "\\" : "\\\\";
 745                                 break;
 746                         default:
 747                                 escaped += *it;
 748                                 break;
 749                 }
 750         }
 751         return escaped;
 752 }
 753
 754 void ConfigReaderThread::Run()
 755 {
 756         Config->Read();
 757         done = true;
 758 }
 759
 760 void ConfigReaderThread::Finish()
 761 {
 762         ServerConfig* old = ServerInstance->Config;
 763         ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "Switching to new configuration...");
 764         ServerInstance->Config = this->Config;
 765         Config->Apply(old, TheUserUID);
 766
 767         if (Config->valid)
 768         {
 769                 /*
 770                  * Apply the changed configuration from the rehash.
 771                  *
 772                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 773                  * thoroughly!!!
 774                  */
 775                 ServerInstance->Users.RehashCloneCounts();
 776                 ServerInstance->XLines->CheckELines();
 777                 ServerInstance->XLines->ApplyLines();
 778                 Config->ApplyDisabledCommands();
 779                 User* user = ServerInstance->FindNick(TheUserUID);
 780
 781                 ConfigStatus status(user);
 782                 const ModuleManager::ModuleMap& mods = ServerInstance->Modules->GetModules();
 783                 for (ModuleManager::ModuleMap::const_iterator i = mods.begin(); i != mods.end(); ++i)
 784                 {
 785                         try
 786                         {
 787                                 ServerInstance->Logs->Log("MODULE", LOG_DEBUG, "Rehashing " + i->first);
 788                                 i->second->ReadConfig(status);
 789                         }
 790                         catch (CoreException& modex)
 791                         {
 792                                 ServerInstance->Logs->Log("MODULE", LOG_DEFAULT, "Exception caught: " + modex.GetReason());
 793                                 if (user)
 794                                         user->WriteNotice(i->first + ": " + modex.GetReason());
 795                         }
 796                 }
 797
 798                 // The description of this server may have changed - update it for WHOIS etc.
 799                 ServerInstance->FakeClient->server->description = Config->ServerDesc;
 800
 801                 ServerInstance->ISupport.Build();
 802
 803                 ServerInstance->Logs->CloseLogs();
 804                 ServerInstance->Logs->OpenFileLogs();
 805
 806                 if (Config->RawLog && !old->RawLog)
 807                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 808
 809                 Config = old;
 810         }
 811         else
 812         {
 813                 // whoops, abort!
 814                 ServerInstance->Config = old;
 815         }
 816 }