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->getInt("maxnick", 30))
  34         , ChanMax(tag->getInt("maxchan", 64))
  35         , MaxModes(tag->getInt("maxmodes", 20))
  36         , IdentMax(tag->getInt("maxident", 10))
  37         , MaxQuit(tag->getInt("maxquit", 255))
  38         , MaxTopic(tag->getInt("maxtopic", 307))
  39         , MaxKick(tag->getInt("maxkick", 255))
  40         , MaxGecos(tag->getInt("maxgecos", 128))
  41         , MaxAway(tag->getInt("maxaway", 200))
  42         , MaxLine(tag->getInt("maxline", 512))
  43         , MaxHost(tag->getInt("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         , NoSnoticeStack(false)
  66 {
  67         RawLog = HideBans = HideSplits = false;
  68         WildcardIPv6 = true;
  69         MaxTargets = 20;
  70         NetBufferSize = 10240;
  71         MaxConn = SOMAXCONN;
  72         MaxChans = 20;
  73         OperMaxChans = 30;
  74         c_ipv4_range = 32;
  75         c_ipv6_range = 128;
  76 }
  77
  78 ServerConfig::~ServerConfig()
  79 {
  80         delete EmptyTag;
  81 }
  82
  83 static void ValidHost(const std::string& p, const std::string& msg)
  84 {
  85         int num_dots = 0;
  86         if (p.empty() || p[0] == '.')
  87                 throw CoreException("The value of "+msg+" is not a valid hostname");
  88         for (unsigned int i=0;i < p.length();i++)
  89         {
  90                 switch (p[i])
  91                 {
  92                         case ' ':
  93                                 throw CoreException("The value of "+msg+" is not a valid hostname");
  94                         case '.':
  95                                 num_dots++;
  96                         break;
  97                 }
  98         }
  99         if (num_dots == 0)
 100                 throw CoreException("The value of "+msg+" is not a valid hostname");
 101 }
 102
 103 bool ServerConfig::ApplyDisabledCommands(const std::string& data)
 104 {
 105         std::stringstream dcmds(data);
 106         std::string thiscmd;
 107
 108         /* Enable everything first */
 109         const CommandParser::CommandMap& commands = ServerInstance->Parser.GetCommands();
 110         for (CommandParser::CommandMap::const_iterator x = commands.begin(); x != commands.end(); ++x)
 111                 x->second->Disable(false);
 112
 113         /* Now disable all the ones which the user wants disabled */
 114         while (dcmds >> thiscmd)
 115         {
 116                 Command* handler = ServerInstance->Parser.GetHandler(thiscmd);
 117                 if (handler)
 118                         handler->Disable(true);
 119         }
 120         return true;
 121 }
 122
 123 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
 124 {
 125         ConfigTagList tags = conf->ConfTags(tag);
 126         for(ConfigIter i = tags.first; i != tags.second; ++i)
 127         {
 128                 ConfigTag* ctag = i->second;
 129                 std::string mask;
 130                 if (!ctag->readString(key, mask))
 131                         throw CoreException("<"+tag+":"+key+"> missing at " + ctag->getTagLocation());
 132                 std::string reason = ctag->getString("reason", "<Config>");
 133                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
 134                 if (!ServerInstance->XLines->AddLine(xl, NULL))
 135                         delete xl;
 136         }
 137 }
 138
 139 typedef std::map<std::string, ConfigTag*> LocalIndex;
 140 void ServerConfig::CrossCheckOperClassType()
 141 {
 142         LocalIndex operclass;
 143         ConfigTagList tags = ConfTags("class");
 144         for(ConfigIter i = tags.first; i != tags.second; ++i)
 145         {
 146                 ConfigTag* tag = i->second;
 147                 std::string name = tag->getString("name");
 148                 if (name.empty())
 149                         throw CoreException("<class:name> missing from tag at " + tag->getTagLocation());
 150                 if (operclass.find(name) != operclass.end())
 151                         throw CoreException("Duplicate class block with name " + name + " at " + tag->getTagLocation());
 152                 operclass[name] = tag;
 153         }
 154         tags = ConfTags("type");
 155         for(ConfigIter i = tags.first; i != tags.second; ++i)
 156         {
 157                 ConfigTag* tag = i->second;
 158                 std::string name = tag->getString("name");
 159                 if (name.empty())
 160                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
 161                 if (OperTypes.find(name) != OperTypes.end())
 162                         throw CoreException("Duplicate type block with name " + name + " at " + tag->getTagLocation());
 163
 164                 OperInfo* ifo = new OperInfo;
 165                 OperTypes[name] = ifo;
 166                 ifo->name = name;
 167                 ifo->type_block = tag;
 168
 169                 std::string classname;
 170                 irc::spacesepstream str(tag->getString("classes"));
 171                 while (str.GetToken(classname))
 172                 {
 173                         LocalIndex::iterator cls = operclass.find(classname);
 174                         if (cls == operclass.end())
 175                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 176                         ifo->class_blocks.push_back(cls->second);
 177                 }
 178         }
 179
 180         tags = ConfTags("oper");
 181         for(ConfigIter i = tags.first; i != tags.second; ++i)
 182         {
 183                 ConfigTag* tag = i->second;
 184
 185                 std::string name = tag->getString("name");
 186                 if (name.empty())
 187                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 188
 189                 std::string type = tag->getString("type");
 190                 OperIndex::iterator tblk = OperTypes.find(type);
 191                 if (tblk == OperTypes.end())
 192                         throw CoreException("Oper block " + name + " has missing type " + type);
 193                 if (oper_blocks.find(name) != oper_blocks.end())
 194                         throw CoreException("Duplicate oper block with name " + name + " at " + tag->getTagLocation());
 195
 196                 OperInfo* ifo = new OperInfo;
 197                 ifo->name = type;
 198                 ifo->oper_block = tag;
 199                 ifo->type_block = tblk->second->type_block;
 200                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 201                 oper_blocks[name] = ifo;
 202         }
 203 }
 204
 205 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 206 {
 207         typedef std::map<std::string, ConnectClass*> ClassMap;
 208         ClassMap oldBlocksByMask;
 209         if (current)
 210         {
 211                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 212                 {
 213                         ConnectClass* c = *i;
 214                         if (c->name.compare(0, 8, "unnamed-", 8))
 215                         {
 216                                 oldBlocksByMask["n" + c->name] = c;
 217                         }
 218                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 219                         {
 220                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 221                                 typeMask += c->host;
 222                                 oldBlocksByMask[typeMask] = c;
 223                         }
 224                 }
 225         }
 226
 227         int blk_count = config_data.count("connect");
 228         if (blk_count == 0)
 229         {
 230                 // No connect blocks found; make a trivial default block
 231                 ConfigItems* items;
 232                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 233                 (*items)["allow"] = "*";
 234                 config_data.insert(std::make_pair("connect", tag));
 235                 blk_count = 1;
 236         }
 237
 238         Classes.resize(blk_count);
 239         std::map<std::string, int> names;
 240
 241         bool try_again = true;
 242         for(int tries=0; try_again; tries++)
 243         {
 244                 try_again = false;
 245                 ConfigTagList tags = ConfTags("connect");
 246                 int i=0;
 247                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 248                 {
 249                         ConfigTag* tag = it->second;
 250                         if (Classes[i])
 251                                 continue;
 252
 253                         ConnectClass* parent = NULL;
 254                         std::string parentName = tag->getString("parent");
 255                         if (!parentName.empty())
 256                         {
 257                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 258                                 if (parentIter == names.end())
 259                                 {
 260                                         try_again = true;
 261                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 262                                         if (tries >= blk_count)
 263                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 264                                         continue;
 265                                 }
 266                                 parent = Classes[parentIter->second];
 267                         }
 268
 269                         std::string name = tag->getString("name");
 270                         std::string mask, typeMask;
 271                         char type;
 272
 273                         if (tag->readString("allow", mask, false))
 274                         {
 275                                 type = CC_ALLOW;
 276                                 typeMask = 'a' + mask;
 277                         }
 278                         else if (tag->readString("deny", mask, false))
 279                         {
 280                                 type = CC_DENY;
 281                                 typeMask = 'd' + mask;
 282                         }
 283                         else if (!name.empty())
 284                         {
 285                                 type = CC_NAMED;
 286                                 mask = name;
 287                                 typeMask = 'n' + mask;
 288                         }
 289                         else
 290                         {
 291                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 292                         }
 293
 294                         if (name.empty())
 295                         {
 296                                 name = "unnamed-" + ConvToStr(i);
 297                         }
 298                         else
 299                         {
 300                                 typeMask = 'n' + name;
 301                         }
 302
 303                         if (names.find(name) != names.end())
 304                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 305                         names[name] = i;
 306
 307                         ConnectClass* me = parent ?
 308                                 new ConnectClass(tag, type, mask, *parent) :
 309                                 new ConnectClass(tag, type, mask);
 310
 311                         me->name = name;
 312
 313                         me->registration_timeout = tag->getDuration("timeout", me->registration_timeout);
 314                         me->pingtime = tag->getDuration("pingfreq", me->pingtime);
 315                         std::string sendq;
 316                         if (tag->readString("sendq", sendq))
 317                         {
 318                                 // attempt to guess a good hard/soft sendq from a single value
 319                                 long value = atol(sendq.c_str());
 320                                 if (value > 16384)
 321                                         me->softsendqmax = value / 16;
 322                                 else
 323                                         me->softsendqmax = value;
 324                                 me->hardsendqmax = value * 8;
 325                         }
 326                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 327                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 328                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 329                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 330                         me->commandrate = tag->getInt("commandrate", me->commandrate);
 331                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 332                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 333                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 334                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 335                         me->maxconnwarn = tag->getBool("maxconnwarn", me->maxconnwarn);
 336                         me->limit = tag->getInt("limit", me->limit);
 337                         me->resolvehostnames = tag->getBool("resolvehostnames", me->resolvehostnames);
 338
 339                         std::string ports = tag->getString("port");
 340                         if (!ports.empty())
 341                         {
 342                                 irc::portparser portrange(ports, false);
 343                                 while (int port = portrange.GetToken())
 344                                         me->ports.insert(port);
 345                         }
 346
 347                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 348                         if (oldMask != oldBlocksByMask.end())
 349                         {
 350                                 ConnectClass* old = oldMask->second;
 351                                 oldBlocksByMask.erase(oldMask);
 352                                 old->Update(me);
 353                                 delete me;
 354                                 me = old;
 355                         }
 356                         Classes[i] = me;
 357                 }
 358         }
 359 }
 360
 361 /** Represents a deprecated configuration tag.
 362  */
 363 struct DeprecatedConfig
 364 {
 365         /** Tag name. */
 366         std::string tag;
 367
 368         /** Attribute key. */
 369         std::string key;
 370
 371         /** Attribute value. */
 372         std::string value;
 373
 374         /** Reason for deprecation. */
 375         std::string reason;
 376 };
 377
 378 static const DeprecatedConfig ChangedConfig[] = {
 379         { "bind",        "transport",   "",                 "has been moved to <bind:ssl> as of 2.0" },
 380         { "die",         "value",       "",                 "you need to reread your config" },
 381         { "gnutls",      "starttls",    "",                 "has been replaced with m_starttls as of 3.0" },
 382         { "link",        "autoconnect", "",                 "2.0+ does not use this attribute - define <autoconnect> tags instead" },
 383         { "link",        "transport",   "",                 "has been moved to <link:ssl> as of 2.0" },
 384         { "module",      "name",        "m_chanprotect.so", "has been replaced with m_customprefix as of 3.0" },
 385         { "module",      "name",        "m_halfop.so",      "has been replaced with m_customprefix as of 3.0" },
 386         { "options",     "cyclehosts",  "",                 "has been replaced with m_hostcycle as of 3.0" },
 387         { "performance", "nouserdns",   "",                 "has been moved to <connect:resolvehostnames> as of 3.0" }
 388 };
 389
 390 void ServerConfig::Fill()
 391 {
 392         ConfigTag* options = ConfValue("options");
 393         ConfigTag* security = ConfValue("security");
 394         ConfigTag* server = ConfValue("server");
 395         if (sid.empty())
 396         {
 397                 ServerName = server->getString("name", "irc.example.com");
 398                 ValidHost(ServerName, "<server:name>");
 399
 400                 sid = server->getString("id");
 401                 if (!sid.empty() && !InspIRCd::IsSID(sid))
 402                         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.");
 403         }
 404         else
 405         {
 406                 std::string name = server->getString("name");
 407                 if (!name.empty() && name != ServerName)
 408                         throw CoreException("You must restart to change the server name");
 409
 410                 std::string nsid = server->getString("id");
 411                 if (!nsid.empty() && nsid != sid)
 412                         throw CoreException("You must restart to change the server id");
 413         }
 414         SoftLimit = ConfValue("performance")->getInt("softlimit", (SocketEngine::GetMaxFds() > 0 ? SocketEngine::GetMaxFds() : LONG_MAX), 10);
 415         CCOnConnect = ConfValue("performance")->getBool("clonesonconnect", true);
 416         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 417         XLineMessage = options->getString("xlinemessage", options->getString("moronbanner", "You're banned!"));
 418         ServerDesc = server->getString("description", "Configure Me");
 419         Network = server->getString("network", "Network");
 420         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240, 1024, 65534);
 421         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 422         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 423         UserStats = security->getString("userstats");
 424         CustomVersion = security->getString("customversion");
 425         HideSplits = security->getBool("hidesplits");
 426         HideBans = security->getBool("hidebans");
 427         HideWhoisServer = security->getString("hidewhois");
 428         HideKillsServer = security->getString("hidekills");
 429         HideULineKills = security->getBool("hideulinekills");
 430         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 431         GenericOper = security->getBool("genericoper");
 432         SyntaxHints = options->getBool("syntaxhints");
 433         CycleHostsFromUser = options->getBool("cyclehostsfromuser");
 434         FullHostInTopic = options->getBool("hostintopic");
 435         MaxTargets = security->getInt("maxtargets", 20, 1, 31);
 436         DefaultModes = options->getString("defaultmodes", "not");
 437         PID = ConfValue("pid")->getString("file");
 438         MaxChans = ConfValue("channels")->getInt("users", 20);
 439         OperMaxChans = ConfValue("channels")->getInt("opers");
 440         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 441         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 442         Limits = ServerLimits(ConfValue("limits"));
 443         Paths = ServerPaths(ConfValue("path"));
 444         NoSnoticeStack = options->getBool("nosnoticestack", false);
 445
 446         if (Network.find(' ') != std::string::npos)
 447                 throw CoreException(Network + " is not a valid network name. A network name must not contain spaces.");
 448
 449         std::string defbind = options->getString("defaultbind");
 450         if (stdalgo::string::equalsci(defbind, "ipv4"))
 451         {
 452                 WildcardIPv6 = false;
 453         }
 454         else if (stdalgo::string::equalsci(defbind, "ipv6"))
 455         {
 456                 WildcardIPv6 = true;
 457         }
 458         else
 459         {
 460                 WildcardIPv6 = true;
 461                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 462                 if (socktest < 0)
 463                         WildcardIPv6 = false;
 464                 else
 465                         SocketEngine::Close(socktest);
 466         }
 467
 468         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 469         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 470         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 471         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 472
 473         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 474         std::string modes = ConfValue("disabled")->getString("usermodes");
 475         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 476         {
 477                 // Complain when the character is not a-z or A-Z
 478                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 479                         throw CoreException("Invalid usermode " + std::string(1, *p) + " was found.");
 480                 DisabledUModes[*p - 'A'] = 1;
 481         }
 482
 483         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 484         modes = ConfValue("disabled")->getString("chanmodes");
 485         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 486         {
 487                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 488                         throw CoreException("Invalid chanmode " + std::string(1, *p) + " was found.");
 489                 DisabledCModes[*p - 'A'] = 1;
 490         }
 491
 492         std::string v = security->getString("announceinvites");
 493
 494         if (v == "ops")
 495                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 496         else if (v == "all")
 497                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 498         else if (v == "dynamic")
 499                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 500         else
 501                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 502
 503         v = security->getString("operspywhois");
 504         if (v == "splitmsg")
 505                 OperSpyWhois = SPYWHOIS_SPLITMSG;
 506         else if (v == "on" || v == "yes")
 507                 OperSpyWhois = SPYWHOIS_SINGLEMSG;
 508         else
 509                 OperSpyWhois = SPYWHOIS_NONE;
 510 }
 511
 512 // WARNING: it is not safe to use most of the codebase in this function, as it
 513 // will run in the config reader thread
 514 void ServerConfig::Read()
 515 {
 516         /* Load and parse the config file, if there are any errors then explode */
 517
 518         ParseStack stack(this);
 519         try
 520         {
 521                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 522         }
 523         catch (CoreException& err)
 524         {
 525                 valid = false;
 526                 errstr << err.GetReason() << std::endl;
 527         }
 528 }
 529
 530 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 531 {
 532         valid = true;
 533         if (old)
 534         {
 535                 /*
 536                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 537                  */
 538                 this->ServerName = old->ServerName;
 539                 this->sid = old->sid;
 540                 this->cmdline = old->cmdline;
 541         }
 542
 543         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 544         try
 545         {
 546                 for (int index = 0; index * sizeof(DeprecatedConfig) < sizeof(ChangedConfig); index++)
 547                 {
 548                         std::string value;
 549                         ConfigTagList tags = ConfTags(ChangedConfig[index].tag);
 550                         for(ConfigIter i = tags.first; i != tags.second; ++i)
 551                         {
 552                                 if (i->second->readString(ChangedConfig[index].key, value, true)
 553                                         && (ChangedConfig[index].value.empty() || value == ChangedConfig[index].value))
 554                                 {
 555                                         errstr << "Your configuration contains a deprecated value: <"  << ChangedConfig[index].tag;
 556                                         if (ChangedConfig[index].value.empty())
 557                                         {
 558                                                 errstr << ':' << ChangedConfig[index].key;
 559                                         }
 560                                         else
 561                                         {
 562                                                 errstr << ' ' << ChangedConfig[index].key << "=\"" << ChangedConfig[index].value << "\"";
 563                                         }
 564                                         errstr << "> - " << ChangedConfig[index].reason << " (at " << i->second->getTagLocation() << ")" << std::endl;
 565                                 }
 566                         }
 567                 }
 568
 569                 Fill();
 570
 571                 // Handle special items
 572                 CrossCheckOperClassType();
 573                 CrossCheckConnectBlocks(old);
 574         }
 575         catch (CoreException &ce)
 576         {
 577                 errstr << ce.GetReason() << std::endl;
 578         }
 579
 580         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 581         valid = errstr.str().empty();
 582
 583         // write once here, to try it out and make sure its ok
 584         if (valid)
 585                 ServerInstance->WritePID(this->PID, !old);
 586
 587         ConfigTagList binds = ConfTags("bind");
 588         if (binds.first == binds.second)
 589                  errstr << "Possible configuration error: you have not defined any <bind> blocks." << std::endl
 590                          << "You will need to do this if you want clients to be able to connect!" << std::endl;
 591
 592         if (old && valid)
 593         {
 594                 // On first run, ports are bound later on
 595                 FailedPortList pl;
 596                 ServerInstance->BindPorts(pl);
 597                 if (pl.size())
 598                 {
 599                         errstr << "Not all your client ports could be bound." << std::endl
 600                                 << "The following port(s) failed to bind:" << std::endl;
 601
 602                         int j = 1;
 603                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 604                         {
 605                                 errstr << j << ".\tAddress: " << (i->first.empty() ? "<all>" : i->first.c_str()) << "\tReason: "
 606                                         << i->second << std::endl;
 607                         }
 608                 }
 609         }
 610
 611         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 612
 613         if (!valid)
 614         {
 615                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "There were errors in your configuration file:");
 616                 Classes.clear();
 617         }
 618
 619         while (errstr.good())
 620         {
 621                 std::string line;
 622                 getline(errstr, line, '\n');
 623                 if (line.empty())
 624                         continue;
 625                 // On startup, print out to console (still attached at this point)
 626                 if (!old)
 627                         std::cout << line << std::endl;
 628                 // If a user is rehashing, tell them directly
 629                 if (user)
 630                         user->WriteRemoteNotice(InspIRCd::Format("*** %s", line.c_str()));
 631                 // Also tell opers
 632                 ServerInstance->SNO->WriteGlobalSno('a', line);
 633         }
 634
 635         errstr.clear();
 636         errstr.str(std::string());
 637
 638         // Re-parse our MOTD and RULES files for colors -- Justasic
 639         for (ClassVector::const_iterator it = this->Classes.begin(), it_end = this->Classes.end(); it != it_end; ++it)
 640         {
 641                 ConfigTag *tag = (*it)->config;
 642                 // Make sure our connection class allows motd colors
 643                 if(!tag->getBool("allowmotdcolors"))
 644                         continue;
 645
 646                 ConfigFileCache::iterator file = this->Files.find(tag->getString("motd", "motd"));
 647                 if (file != this->Files.end())
 648                         InspIRCd::ProcessColors(file->second);
 649         }
 650
 651         /* No old configuration -> initial boot, nothing more to do here */
 652         if (!old)
 653         {
 654                 if (!valid)
 655                 {
 656                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 657                 }
 658
 659                 return;
 660         }
 661
 662
 663         // If there were errors processing configuration, don't touch modules.
 664         if (!valid)
 665                 return;
 666
 667         ApplyModules(user);
 668
 669         if (user)
 670                 user->WriteRemoteNotice("*** Successfully rehashed server.");
 671         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 672 }
 673
 674 void ServerConfig::ApplyModules(User* user)
 675 {
 676         std::vector<std::string> added_modules;
 677         ModuleManager::ModuleMap removed_modules = ServerInstance->Modules->GetModules();
 678
 679         ConfigTagList tags = ConfTags("module");
 680         for(ConfigIter i = tags.first; i != tags.second; ++i)
 681         {
 682                 ConfigTag* tag = i->second;
 683                 std::string name;
 684                 if (tag->readString("name", name))
 685                 {
 686                         name = ModuleManager::ExpandModName(name);
 687                         // if this module is already loaded, the erase will succeed, so we need do nothing
 688                         // otherwise, we need to add the module (which will be done later)
 689                         if (removed_modules.erase(name) == 0)
 690                                 added_modules.push_back(name);
 691                 }
 692         }
 693
 694         for (ModuleManager::ModuleMap::iterator i = removed_modules.begin(); i != removed_modules.end(); ++i)
 695         {
 696                 const std::string& modname = i->first;
 697                 // Don't remove core_*.so, just remove m_*.so
 698                 if (InspIRCd::Match(modname, "core_*.so", ascii_case_insensitive_map))
 699                         continue;
 700                 if (ServerInstance->Modules->Unload(i->second))
 701                 {
 702                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s", modname.c_str());
 703
 704                         if (user)
 705                                 user->WriteNumeric(RPL_UNLOADEDMODULE, modname, InspIRCd::Format("Module %s successfully unloaded.", modname.c_str()));
 706                         else
 707                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", modname.c_str());
 708                 }
 709                 else
 710                 {
 711                         if (user)
 712                                 user->WriteNumeric(ERR_CANTUNLOADMODULE, modname, InspIRCd::Format("Failed to unload module %s: %s", modname.c_str(), ServerInstance->Modules->LastError().c_str()));
 713                         else
 714                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", modname.c_str(), ServerInstance->Modules->LastError().c_str());
 715                 }
 716         }
 717
 718         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 719         {
 720                 if (ServerInstance->Modules->Load(*adding))
 721                 {
 722                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 723                         if (user)
 724                                 user->WriteNumeric(RPL_LOADEDMODULE, *adding, InspIRCd::Format("Module %s successfully loaded.", adding->c_str()));
 725                         else
 726                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 727                 }
 728                 else
 729                 {
 730                         if (user)
 731                                 user->WriteNumeric(ERR_CANTLOADMODULE, *adding, InspIRCd::Format("Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str()));
 732                         else
 733                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 734                 }
 735         }
 736 }
 737
 738 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 739 {
 740         ConfigTagList found = config_data.equal_range(tag);
 741         if (found.first == found.second)
 742                 return EmptyTag;
 743         ConfigTag* rv = found.first->second;
 744         found.first++;
 745         if (found.first != found.second)
 746                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 747                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 748         return rv;
 749 }
 750
 751 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 752 {
 753         return config_data.equal_range(tag);
 754 }
 755
 756 std::string ServerConfig::Escape(const std::string& str, bool xml)
 757 {
 758         std::string escaped;
 759         for (std::string::const_iterator it = str.begin(); it != str.end(); ++it)
 760         {
 761                 switch (*it)
 762                 {
 763                         case '"':
 764                                 escaped += xml ? "&quot;" : "\"";
 765                                 break;
 766                         case '&':
 767                                 escaped += xml ? "&amp;" : "&";
 768                                 break;
 769                         case '\\':
 770                                 escaped += xml ? "\\" : "\\\\";
 771                                 break;
 772                         default:
 773                                 escaped += *it;
 774                                 break;
 775                 }
 776         }
 777         return escaped;
 778 }
 779
 780 void ConfigReaderThread::Run()
 781 {
 782         Config->Read();
 783         done = true;
 784 }
 785
 786 void ConfigReaderThread::Finish()
 787 {
 788         ServerConfig* old = ServerInstance->Config;
 789         ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "Switching to new configuration...");
 790         ServerInstance->Config = this->Config;
 791         Config->Apply(old, TheUserUID);
 792
 793         if (Config->valid)
 794         {
 795                 /*
 796                  * Apply the changed configuration from the rehash.
 797                  *
 798                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 799                  * thoroughly!!!
 800                  */
 801                 ServerInstance->Users.RehashCloneCounts();
 802                 ServerInstance->XLines->CheckELines();
 803                 ServerInstance->XLines->ApplyLines();
 804                 ChanModeReference ban(NULL, "ban");
 805                 static_cast<ListModeBase*>(*ban)->DoRehash();
 806                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 807                 User* user = ServerInstance->FindNick(TheUserUID);
 808
 809                 ConfigStatus status(user);
 810                 const ModuleManager::ModuleMap& mods = ServerInstance->Modules->GetModules();
 811                 for (ModuleManager::ModuleMap::const_iterator i = mods.begin(); i != mods.end(); ++i)
 812                         i->second->ReadConfig(status);
 813
 814                 // The description of this server may have changed - update it for WHOIS etc.
 815                 ServerInstance->FakeClient->server->description = Config->ServerDesc;
 816
 817                 ServerInstance->ISupport.Build();
 818
 819                 ServerInstance->Logs->CloseLogs();
 820                 ServerInstance->Logs->OpenFileLogs();
 821
 822                 if (Config->RawLog && !old->RawLog)
 823                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 824
 825                 Config = old;
 826         }
 827         else
 828         {
 829                 // whoops, abort!
 830                 ServerInstance->Config = old;
 831         }
 832 }