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 <fstream>
  27 #include "xline.h"
  28 #include "listmode.h"
  29 #include "exitcodes.h"
  30 #include "configparser.h"
  31 #include <iostream>
  32
  33 ServerConfig::ServerConfig()
  34 {
  35         RawLog = HideBans = HideSplits = UndernetMsgPrefix = false;
  36         WildcardIPv6 = CycleHosts = InvBypassModes = true;
  37         dns_timeout = 5;
  38         MaxTargets = 20;
  39         NetBufferSize = 10240;
  40         SoftLimit = ServerInstance->SE->GetMaxFds();
  41         MaxConn = SOMAXCONN;
  42         MaxChans = 20;
  43         OperMaxChans = 30;
  44         c_ipv4_range = 32;
  45         c_ipv6_range = 128;
  46 }
  47
  48 template<typename T, typename V>
  49 static void range(T& value, V min, V max, V def, const char* msg)
  50 {
  51         if (value >= (T)min && value <= (T)max)
  52                 return;
  53         ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT,
  54                 "WARNING: %s value of %ld is not between %ld and %ld; set to %ld.",
  55                 msg, (long)value, (long)min, (long)max, (long)def);
  56         value = def;
  57 }
  58
  59 static void ValidHost(const std::string& p, const std::string& msg)
  60 {
  61         int num_dots = 0;
  62         if (p.empty() || p[0] == '.')
  63                 throw CoreException("The value of "+msg+" is not a valid hostname");
  64         for (unsigned int i=0;i < p.length();i++)
  65         {
  66                 switch (p[i])
  67                 {
  68                         case ' ':
  69                                 throw CoreException("The value of "+msg+" is not a valid hostname");
  70                         case '.':
  71                                 num_dots++;
  72                         break;
  73                 }
  74         }
  75         if (num_dots == 0)
  76                 throw CoreException("The value of "+msg+" is not a valid hostname");
  77 }
  78
  79 bool ServerConfig::ApplyDisabledCommands(const std::string& data)
  80 {
  81         std::stringstream dcmds(data);
  82         std::string thiscmd;
  83
  84         /* Enable everything first */
  85         for (Commandtable::iterator x = ServerInstance->Parser->cmdlist.begin(); x != ServerInstance->Parser->cmdlist.end(); x++)
  86                 x->second->Disable(false);
  87
  88         /* Now disable all the ones which the user wants disabled */
  89         while (dcmds >> thiscmd)
  90         {
  91                 Commandtable::iterator cm = ServerInstance->Parser->cmdlist.find(thiscmd);
  92                 if (cm != ServerInstance->Parser->cmdlist.end())
  93                 {
  94                         cm->second->Disable(true);
  95                 }
  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 (!ServerInstance->IsNick(name, Limits.NickMax))
 139                         throw CoreException("<type:name> is invalid (value '" + name + "')");
 140                 if (oper_blocks.find(" " + name) != oper_blocks.end())
 141                         throw CoreException("Duplicate type block with name " + name + " at " + tag->getTagLocation());
 142
 143                 OperInfo* ifo = new OperInfo;
 144                 oper_blocks[" " + name] = ifo;
 145                 ifo->name = name;
 146                 ifo->type_block = tag;
 147
 148                 std::string classname;
 149                 irc::spacesepstream str(tag->getString("classes"));
 150                 while (str.GetToken(classname))
 151                 {
 152                         LocalIndex::iterator cls = operclass.find(classname);
 153                         if (cls == operclass.end())
 154                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 155                         ifo->class_blocks.push_back(cls->second);
 156                 }
 157         }
 158
 159         tags = ConfTags("oper");
 160         for(ConfigIter i = tags.first; i != tags.second; ++i)
 161         {
 162                 ConfigTag* tag = i->second;
 163
 164                 std::string name = tag->getString("name");
 165                 if (name.empty())
 166                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 167
 168                 std::string type = tag->getString("type");
 169                 OperIndex::iterator tblk = oper_blocks.find(" " + type);
 170                 if (tblk == oper_blocks.end())
 171                         throw CoreException("Oper block " + name + " has missing type " + type);
 172                 if (oper_blocks.find(name) != oper_blocks.end())
 173                         throw CoreException("Duplicate oper block with name " + name + " at " + tag->getTagLocation());
 174
 175                 OperInfo* ifo = new OperInfo;
 176                 ifo->name = type;
 177                 ifo->oper_block = tag;
 178                 ifo->type_block = tblk->second->type_block;
 179                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 180                 oper_blocks[name] = ifo;
 181         }
 182 }
 183
 184 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 185 {
 186         typedef std::map<std::string, ConnectClass*> ClassMap;
 187         ClassMap oldBlocksByMask;
 188         if (current)
 189         {
 190                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 191                 {
 192                         ConnectClass* c = *i;
 193                         if (c->name.substr(0, 8) != "unnamed-")
 194                         {
 195                                 oldBlocksByMask["n" + c->name] = c;
 196                         }
 197                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 198                         {
 199                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 200                                 typeMask += c->host;
 201                                 oldBlocksByMask[typeMask] = c;
 202                         }
 203                 }
 204         }
 205
 206         int blk_count = config_data.count("connect");
 207         if (blk_count == 0)
 208         {
 209                 // No connect blocks found; make a trivial default block
 210                 std::vector<KeyVal>* items;
 211                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 212                 items->push_back(std::make_pair("allow", "*"));
 213                 config_data.insert(std::make_pair("connect", tag));
 214                 blk_count = 1;
 215         }
 216
 217         Classes.resize(blk_count);
 218         std::map<std::string, int> names;
 219
 220         bool try_again = true;
 221         for(int tries=0; try_again; tries++)
 222         {
 223                 try_again = false;
 224                 ConfigTagList tags = ConfTags("connect");
 225                 int i=0;
 226                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 227                 {
 228                         ConfigTag* tag = it->second;
 229                         if (Classes[i])
 230                                 continue;
 231
 232                         ConnectClass* parent = NULL;
 233                         std::string parentName = tag->getString("parent");
 234                         if (!parentName.empty())
 235                         {
 236                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 237                                 if (parentIter == names.end())
 238                                 {
 239                                         try_again = true;
 240                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 241                                         if (tries >= blk_count)
 242                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 243                                         continue;
 244                                 }
 245                                 parent = Classes[parentIter->second];
 246                         }
 247
 248                         std::string name = tag->getString("name");
 249                         std::string mask, typeMask;
 250                         char type;
 251
 252                         if (tag->readString("allow", mask, false))
 253                         {
 254                                 type = CC_ALLOW;
 255                                 typeMask = 'a' + mask;
 256                         }
 257                         else if (tag->readString("deny", mask, false))
 258                         {
 259                                 type = CC_DENY;
 260                                 typeMask = 'd' + mask;
 261                         }
 262                         else if (!name.empty())
 263                         {
 264                                 type = CC_NAMED;
 265                                 mask = name;
 266                                 typeMask = 'n' + mask;
 267                         }
 268                         else
 269                         {
 270                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 271                         }
 272
 273                         if (name.empty())
 274                         {
 275                                 name = "unnamed-" + ConvToStr(i);
 276                         }
 277                         else
 278                         {
 279                                 typeMask = 'n' + name;
 280                         }
 281
 282                         if (names.find(name) != names.end())
 283                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 284                         names[name] = i;
 285
 286                         ConnectClass* me = parent ?
 287                                 new ConnectClass(tag, type, mask, *parent) :
 288                                 new ConnectClass(tag, type, mask);
 289
 290                         me->name = name;
 291
 292                         me->registration_timeout = tag->getInt("timeout", me->registration_timeout);
 293                         me->pingtime = tag->getInt("pingfreq", me->pingtime);
 294                         std::string sendq;
 295                         if (tag->readString("sendq", sendq))
 296                         {
 297                                 // attempt to guess a good hard/soft sendq from a single value
 298                                 long value = atol(sendq.c_str());
 299                                 if (value > 16384)
 300                                         me->softsendqmax = value / 16;
 301                                 else
 302                                         me->softsendqmax = value;
 303                                 me->hardsendqmax = value * 8;
 304                         }
 305                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 306                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 307                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 308                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 309                         me->commandrate = tag->getInt("commandrate", me->commandrate);
 310                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 311                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 312                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 313                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 314                         me->maxconnwarn = tag->getBool("maxconnwarn", me->maxconnwarn);
 315                         me->limit = tag->getInt("limit", me->limit);
 316
 317                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 318                         if (oldMask != oldBlocksByMask.end())
 319                         {
 320                                 ConnectClass* old = oldMask->second;
 321                                 oldBlocksByMask.erase(oldMask);
 322                                 old->Update(me);
 323                                 delete me;
 324                                 me = old;
 325                         }
 326                         Classes[i] = me;
 327                 }
 328         }
 329 }
 330
 331 /** Represents a deprecated configuration tag.
 332  */
 333 struct DeprecatedConfig
 334 {
 335         /** Tag name. */
 336         std::string tag;
 337
 338         /** Attribute key. */
 339         std::string key;
 340
 341         /** Attribute value. */
 342         std::string value;
 343
 344         /** Reason for deprecation. */
 345         std::string reason;
 346 };
 347
 348 static const DeprecatedConfig ChangedConfig[] = {
 349         { "bind",   "transport",   "",                 "has been moved to <bind:ssl> as of 2.0" },
 350         { "die",    "value",       "",                 "you need to reread your config" },
 351         { "link",   "autoconnect", "",                 "2.0+ does not use this attribute - define <autoconnect> tags instead" },
 352         { "link",   "transport",   "",                 "has been moved to <link:ssl> as of 2.0" },
 353         { "module", "name",        "m_chanprotect.so", "has been replaced with m_customprefix as of 2.2" },
 354         { "module", "name",        "m_halfop.so",      "has been replaced with m_customprefix as of 2.2" },
 355 };
 356
 357 void ServerConfig::Fill()
 358 {
 359         ConfigTag* options = ConfValue("options");
 360         ConfigTag* security = ConfValue("security");
 361         if (sid.empty())
 362         {
 363                 ServerName = ConfValue("server")->getString("name");
 364                 sid = ConfValue("server")->getString("id");
 365                 ValidHost(ServerName, "<server:name>");
 366                 if (!sid.empty() && !InspIRCd::IsSID(sid))
 367                         throw CoreException(sid + " is not a valid server ID. A server ID must be 3 characters long, with the first character a digit and the next two characters a digit or letter.");
 368         }
 369         else
 370         {
 371                 if (ServerName != ConfValue("server")->getString("name"))
 372                         throw CoreException("You must restart to change the server name or SID");
 373                 std::string nsid = ConfValue("server")->getString("id");
 374                 if (!nsid.empty() && nsid != sid)
 375                         throw CoreException("You must restart to change the server name or SID");
 376         }
 377         diepass = ConfValue("power")->getString("diepass");
 378         restartpass = ConfValue("power")->getString("restartpass");
 379         powerhash = ConfValue("power")->getString("hash");
 380         PrefixQuit = options->getString("prefixquit");
 381         SuffixQuit = options->getString("suffixquit");
 382         FixedQuit = options->getString("fixedquit");
 383         PrefixPart = options->getString("prefixpart");
 384         SuffixPart = options->getString("suffixpart");
 385         FixedPart = options->getString("fixedpart");
 386         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 387         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 388         MoronBanner = options->getString("moronbanner", "You're banned!");
 389         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 390         Network = ConfValue("server")->getString("network", "Network");
 391         AdminName = ConfValue("admin")->getString("name", "");
 392         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 393         AdminNick = ConfValue("admin")->getString("nick", "admin");
 394         ModPath = ConfValue("path")->getString("moduledir", MOD_PATH);
 395         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 396         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 397         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 398         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 399         UserStats = security->getString("userstats");
 400         CustomVersion = security->getString("customversion", Network + " IRCd");
 401         HideSplits = security->getBool("hidesplits");
 402         HideBans = security->getBool("hidebans");
 403         HideWhoisServer = security->getString("hidewhois");
 404         HideKillsServer = security->getString("hidekills");
 405         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 406         GenericOper = security->getBool("genericoper");
 407         SyntaxHints = options->getBool("syntaxhints");
 408         CycleHosts = options->getBool("cyclehosts");
 409         CycleHostsFromUser = options->getBool("cyclehostsfromuser");
 410         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 411         FullHostInTopic = options->getBool("hostintopic");
 412         MaxTargets = security->getInt("maxtargets", 20);
 413         DefaultModes = options->getString("defaultmodes", "nt");
 414         PID = ConfValue("pid")->getString("file");
 415         MaxChans = ConfValue("channels")->getInt("users", 20);
 416         OperMaxChans = ConfValue("channels")->getInt("opers", 60);
 417         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 418         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 419         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 420         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 421         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 422         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 423         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 424         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 425         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 426         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 427         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 428         InvBypassModes = options->getBool("invitebypassmodes", true);
 429         NoSnoticeStack = options->getBool("nosnoticestack", false);
 430
 431         range(SoftLimit, 10, ServerInstance->SE->GetMaxFds(), ServerInstance->SE->GetMaxFds(), "<performance:softlimit>");
 432         range(MaxConn, 0, SOMAXCONN, SOMAXCONN, "<performance:somaxconn>");
 433         range(MaxTargets, 1, 31, 20, "<security:maxtargets>");
 434         range(NetBufferSize, 1024, 65534, 10240, "<performance:netbuffersize>");
 435
 436         std::string defbind = options->getString("defaultbind");
 437         if (assign(defbind) == "ipv4")
 438         {
 439                 WildcardIPv6 = false;
 440         }
 441         else if (assign(defbind) == "ipv6")
 442         {
 443                 WildcardIPv6 = true;
 444         }
 445         else
 446         {
 447                 WildcardIPv6 = true;
 448                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 449                 if (socktest < 0)
 450                         WildcardIPv6 = false;
 451                 else
 452                         ServerInstance->SE->Close(socktest);
 453         }
 454         ConfigTagList tags = ConfTags("uline");
 455         for(ConfigIter i = tags.first; i != tags.second; ++i)
 456         {
 457                 ConfigTag* tag = i->second;
 458                 std::string server;
 459                 if (!tag->readString("server", server))
 460                         throw CoreException("<uline> tag missing server at " + tag->getTagLocation());
 461                 ulines[assign(server)] = tag->getBool("silent");
 462         }
 463
 464         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 465         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 466         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 467         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 468
 469         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 470         std::string modes = ConfValue("disabled")->getString("usermodes");
 471         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 472         {
 473                 // Complain when the character is not a-z or A-Z
 474                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 475                         throw CoreException("Invalid usermode " + std::string(1, *p) + " was found.");
 476                 DisabledUModes[*p - 'A'] = 1;
 477         }
 478
 479         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 480         modes = ConfValue("disabled")->getString("chanmodes");
 481         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 482         {
 483                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 484                         throw CoreException("Invalid chanmode " + std::string(1, *p) + " was found.");
 485                 DisabledCModes[*p - 'A'] = 1;
 486         }
 487
 488         memset(HideModeLists, 0, sizeof(HideModeLists));
 489         modes = ConfValue("security")->getString("hidemodes");
 490         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 491                 HideModeLists[(unsigned char) *p] = true;
 492
 493         std::string v = security->getString("announceinvites");
 494
 495         if (v == "ops")
 496                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 497         else if (v == "all")
 498                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 499         else if (v == "dynamic")
 500                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 501         else
 502                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 503
 504         v = security->getString("operspywhois");
 505         if (v == "splitmsg")
 506                 OperSpyWhois = SPYWHOIS_SPLITMSG;
 507         else if (v == "on" || v == "yes")
 508                 OperSpyWhois = SPYWHOIS_SINGLEMSG;
 509         else
 510                 OperSpyWhois = SPYWHOIS_NONE;
 511 }
 512
 513 // WARNING: it is not safe to use most of the codebase in this function, as it
 514 // will run in the config reader thread
 515 void ServerConfig::Read()
 516 {
 517         /* Load and parse the config file, if there are any errors then explode */
 518
 519         ParseStack stack(this);
 520         try
 521         {
 522                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 523         }
 524         catch (CoreException& err)
 525         {
 526                 valid = false;
 527                 errstr << err.GetReason();
 528         }
 529 }
 530
 531 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 532 {
 533         valid = true;
 534         if (old)
 535         {
 536                 /*
 537                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 538                  */
 539                 this->ServerName = old->ServerName;
 540                 this->sid = old->sid;
 541                 this->cmdline = old->cmdline;
 542         }
 543
 544         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 545         try
 546         {
 547                 for (int index = 0; index * sizeof(DeprecatedConfig) < sizeof(ChangedConfig); index++)
 548                 {
 549                         std::string value;
 550                         ConfigTagList tags = ConfTags(ChangedConfig[index].tag);
 551                         for(ConfigIter i = tags.first; i != tags.second; ++i)
 552                         {
 553                                 if (i->second->readString(ChangedConfig[index].key, value, true)
 554                                         && (ChangedConfig[index].value.empty() || value == ChangedConfig[index].value))
 555                                 {
 556                                         errstr << "Your configuration contains a deprecated value: <"  << ChangedConfig[index].tag;
 557                                         if (ChangedConfig[index].value.empty())
 558                                         {
 559                                                 errstr << ':' << ChangedConfig[index].key;
 560                                         }
 561                                         else
 562                                         {
 563                                                 errstr << ' ' << ChangedConfig[index].key << "=\"" << ChangedConfig[index].value << "\"";
 564                                         }
 565                                         errstr << "> - " << ChangedConfig[index].reason << " (at " << i->second->getTagLocation() << ")\n";
 566                                 }
 567                         }
 568                 }
 569
 570                 Fill();
 571
 572                 // Handle special items
 573                 CrossCheckOperClassType();
 574                 CrossCheckConnectBlocks(old);
 575         }
 576         catch (CoreException &ce)
 577         {
 578                 errstr << ce.GetReason();
 579         }
 580
 581         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 582         valid = errstr.str().empty();
 583
 584         // write once here, to try it out and make sure its ok
 585         if (valid)
 586                 ServerInstance->WritePID(this->PID);
 587
 588         if (old)
 589         {
 590                 // On first run, ports are bound later on
 591                 FailedPortList pl;
 592                 ServerInstance->BindPorts(pl);
 593                 if (pl.size())
 594                 {
 595                         errstr << "Not all your client ports could be bound.\nThe following port(s) failed to bind:\n";
 596
 597                         int j = 1;
 598                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 599                         {
 600                                 char buf[MAXBUF];
 601                                 snprintf(buf, MAXBUF, "%d.   Address: %s   Reason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 602                                 errstr << buf;
 603                         }
 604                 }
 605         }
 606
 607         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 608
 609         if (!valid)
 610                 ServerInstance->Logs->Log("CONFIG",LOG_DEFAULT, "There were errors in your configuration file:");
 611
 612         while (errstr.good())
 613         {
 614                 std::string line;
 615                 getline(errstr, line, '\n');
 616                 if (line.empty())
 617                         continue;
 618                 // On startup, print out to console (still attached at this point)
 619                 if (!old)
 620                         std::cout << line << std::endl;
 621                 // If a user is rehashing, tell them directly
 622                 if (user)
 623                         user->SendText(":%s NOTICE %s :*** %s", ServerInstance->Config->ServerName.c_str(), user->nick.c_str(), line.c_str());
 624                 // Also tell opers
 625                 ServerInstance->SNO->WriteGlobalSno('a', line);
 626         }
 627
 628         errstr.clear();
 629         errstr.str(std::string());
 630
 631         // Re-parse our MOTD and RULES files for colors -- Justasic
 632         for (ClassVector::const_iterator it = this->Classes.begin(), it_end = this->Classes.end(); it != it_end; ++it)
 633         {
 634                 ConfigTag *tag = (*it)->config;
 635                 // Make sure our connection class allows motd colors
 636                 if(!tag->getBool("allowmotdcolors"))
 637                       continue;
 638
 639                 ConfigFileCache::iterator file = this->Files.find(tag->getString("motd", "motd"));
 640                 if (file != this->Files.end())
 641                       InspIRCd::ProcessColors(file->second);
 642
 643                 file = this->Files.find(tag->getString("rules", "rules"));
 644                 if (file != this->Files.end())
 645                       InspIRCd::ProcessColors(file->second);
 646         }
 647
 648         /* No old configuration -> initial boot, nothing more to do here */
 649         if (!old)
 650         {
 651                 if (!valid)
 652                 {
 653                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 654                 }
 655
 656                 return;
 657         }
 658
 659
 660         // If there were errors processing configuration, don't touch modules.
 661         if (!valid)
 662                 return;
 663
 664         ApplyModules(user);
 665
 666         if (user)
 667                 user->SendText(":%s NOTICE %s :*** Successfully rehashed server.",
 668                         ServerInstance->Config->ServerName.c_str(), user->nick.c_str());
 669         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 670 }
 671
 672 void ServerConfig::ApplyModules(User* user)
 673 {
 674         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
 675         std::vector<std::string> added_modules;
 676         std::set<std::string> removed_modules(v.begin(), v.end());
 677
 678         ConfigTagList tags = ConfTags("module");
 679         for(ConfigIter i = tags.first; i != tags.second; ++i)
 680         {
 681                 ConfigTag* tag = i->second;
 682                 std::string name;
 683                 if (tag->readString("name", name))
 684                 {
 685                         // if this module is already loaded, the erase will succeed, so we need do nothing
 686                         // otherwise, we need to add the module (which will be done later)
 687                         if (removed_modules.erase(name) == 0)
 688                                 added_modules.push_back(name);
 689                 }
 690         }
 691
 692         if (ConfValue("options")->getBool("allowhalfop") && removed_modules.erase("m_halfop.so") == 0)
 693                 added_modules.push_back("m_halfop.so");
 694
 695         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 696         {
 697                 // Don't remove cmd_*.so, just remove m_*.so
 698                 if (removing->c_str()[0] == 'c')
 699                         continue;
 700                 Module* m = ServerInstance->Modules->Find(*removing);
 701                 if (m && ServerInstance->Modules->Unload(m))
 702                 {
 703                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
 704
 705                         if (user)
 706                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
 707                         else
 708                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
 709                 }
 710                 else
 711                 {
 712                         if (user)
 713                                 user->WriteNumeric(ERR_CANTUNLOADMODULE, "%s %s :Failed to unload module %s: %s",user->nick.c_str(), removing->c_str(), removing->c_str(), ServerInstance->Modules->LastError().c_str());
 714                         else
 715                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
 716                 }
 717         }
 718
 719         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 720         {
 721                 if (ServerInstance->Modules->Load(adding->c_str()))
 722                 {
 723                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 724                         if (user)
 725                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
 726                         else
 727                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 728                 }
 729                 else
 730                 {
 731                         if (user)
 732                                 user->WriteNumeric(ERR_CANTLOADMODULE, "%s %s :Failed to load module %s: %s",user->nick.c_str(), adding->c_str(), adding->c_str(), ServerInstance->Modules->LastError().c_str());
 733                         else
 734                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 735                 }
 736         }
 737 }
 738
 739 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
 740 {
 741         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
 742 }
 743
 744 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 745 {
 746         ConfigTagList found = config_data.equal_range(tag);
 747         if (found.first == found.second)
 748                 return NULL;
 749         ConfigTag* rv = found.first->second;
 750         found.first++;
 751         if (found.first != found.second)
 752                 ServerInstance->Logs->Log("CONFIG",LOG_DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 753                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 754         return rv;
 755 }
 756
 757 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 758 {
 759         return config_data.equal_range(tag);
 760 }
 761
 762 bool ServerConfig::FileExists(const char* file)
 763 {
 764         struct stat sb;
 765         if (stat(file, &sb) == -1)
 766                 return false;
 767
 768         if ((sb.st_mode & S_IFDIR) > 0)
 769                 return false;
 770
 771         FILE *input = fopen(file, "r");
 772         if (input == NULL)
 773                 return false;
 774         else
 775         {
 776                 fclose(input);
 777                 return true;
 778         }
 779 }
 780
 781 const char* ServerConfig::CleanFilename(const char* name)
 782 {
 783         const char* p = name + strlen(name);
 784         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
 785         return (p != name ? ++p : p);
 786 }
 787
 788 const std::string& ServerConfig::GetSID()
 789 {
 790         return sid;
 791 }
 792
 793 void ConfigReaderThread::Run()
 794 {
 795         Config->Read();
 796         done = true;
 797 }
 798
 799 void ConfigReaderThread::Finish()
 800 {
 801         ServerConfig* old = ServerInstance->Config;
 802         ServerInstance->Logs->Log("CONFIG",LOG_DEBUG,"Switching to new configuration...");
 803         ServerInstance->Config = this->Config;
 804         Config->Apply(old, TheUserUID);
 805
 806         if (Config->valid)
 807         {
 808                 /*
 809                  * Apply the changed configuration from the rehash.
 810                  *
 811                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 812                  * thoroughly!!!
 813                  */
 814                 ServerInstance->XLines->CheckELines();
 815                 ServerInstance->XLines->ApplyLines();
 816                 ModeReference ban(NULL, "ban");
 817                 static_cast<ListModeBase*>(*ban)->DoRehash();
 818                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 819                 User* user = ServerInstance->FindNick(TheUserUID);
 820                 FOREACH_MOD(I_OnRehash, OnRehash(user));
 821                 ServerInstance->ISupport.Build();
 822
 823                 ServerInstance->Logs->CloseLogs();
 824                 ServerInstance->Logs->OpenFileLogs();
 825
 826                 if (Config->RawLog && !old->RawLog)
 827                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 828
 829                 Config = old;
 830         }
 831         else
 832         {
 833                 // whoops, abort!
 834                 ServerInstance->Config = old;
 835         }
 836 }