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 ServerConfig::ServerConfig()
  33 {
  34         RawLog = HideBans = HideSplits = UndernetMsgPrefix = false;
  35         WildcardIPv6 = InvBypassModes = true;
  36         dns_timeout = 5;
  37         MaxTargets = 20;
  38         NetBufferSize = 10240;
  39         SoftLimit = ServerInstance->SE->GetMaxFds();
  40         MaxConn = SOMAXCONN;
  41         MaxChans = 20;
  42         OperMaxChans = 30;
  43         c_ipv4_range = 32;
  44         c_ipv6_range = 128;
  45 }
  46
  47 static void ValidHost(const std::string& p, const std::string& msg)
  48 {
  49         int num_dots = 0;
  50         if (p.empty() || p[0] == '.')
  51                 throw CoreException("The value of "+msg+" is not a valid hostname");
  52         for (unsigned int i=0;i < p.length();i++)
  53         {
  54                 switch (p[i])
  55                 {
  56                         case ' ':
  57                                 throw CoreException("The value of "+msg+" is not a valid hostname");
  58                         case '.':
  59                                 num_dots++;
  60                         break;
  61                 }
  62         }
  63         if (num_dots == 0)
  64                 throw CoreException("The value of "+msg+" is not a valid hostname");
  65 }
  66
  67 bool ServerConfig::ApplyDisabledCommands(const std::string& data)
  68 {
  69         std::stringstream dcmds(data);
  70         std::string thiscmd;
  71
  72         /* Enable everything first */
  73         for (Commandtable::iterator x = ServerInstance->Parser->cmdlist.begin(); x != ServerInstance->Parser->cmdlist.end(); x++)
  74                 x->second->Disable(false);
  75
  76         /* Now disable all the ones which the user wants disabled */
  77         while (dcmds >> thiscmd)
  78         {
  79                 Commandtable::iterator cm = ServerInstance->Parser->cmdlist.find(thiscmd);
  80                 if (cm != ServerInstance->Parser->cmdlist.end())
  81                 {
  82                         cm->second->Disable(true);
  83                 }
  84         }
  85         return true;
  86 }
  87
  88 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
  89 {
  90         ConfigTagList tags = conf->ConfTags(tag);
  91         for(ConfigIter i = tags.first; i != tags.second; ++i)
  92         {
  93                 ConfigTag* ctag = i->second;
  94                 std::string mask;
  95                 if (!ctag->readString(key, mask))
  96                         throw CoreException("<"+tag+":"+key+"> missing at " + ctag->getTagLocation());
  97                 std::string reason = ctag->getString("reason", "<Config>");
  98                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
  99                 if (!ServerInstance->XLines->AddLine(xl, NULL))
 100                         delete xl;
 101         }
 102 }
 103
 104 typedef std::map<std::string, ConfigTag*> LocalIndex;
 105 void ServerConfig::CrossCheckOperClassType()
 106 {
 107         LocalIndex operclass;
 108         ConfigTagList tags = ConfTags("class");
 109         for(ConfigIter i = tags.first; i != tags.second; ++i)
 110         {
 111                 ConfigTag* tag = i->second;
 112                 std::string name = tag->getString("name");
 113                 if (name.empty())
 114                         throw CoreException("<class:name> missing from tag at " + tag->getTagLocation());
 115                 if (operclass.find(name) != operclass.end())
 116                         throw CoreException("Duplicate class block with name " + name + " at " + tag->getTagLocation());
 117                 operclass[name] = tag;
 118         }
 119         tags = ConfTags("type");
 120         for(ConfigIter i = tags.first; i != tags.second; ++i)
 121         {
 122                 ConfigTag* tag = i->second;
 123                 std::string name = tag->getString("name");
 124                 if (name.empty())
 125                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
 126                 if (oper_blocks.find(" " + name) != oper_blocks.end())
 127                         throw CoreException("Duplicate type block with name " + name + " at " + tag->getTagLocation());
 128
 129                 OperInfo* ifo = new OperInfo;
 130                 oper_blocks[" " + name] = ifo;
 131                 ifo->name = name;
 132                 ifo->type_block = tag;
 133
 134                 std::string classname;
 135                 irc::spacesepstream str(tag->getString("classes"));
 136                 while (str.GetToken(classname))
 137                 {
 138                         LocalIndex::iterator cls = operclass.find(classname);
 139                         if (cls == operclass.end())
 140                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 141                         ifo->class_blocks.push_back(cls->second);
 142                 }
 143         }
 144
 145         tags = ConfTags("oper");
 146         for(ConfigIter i = tags.first; i != tags.second; ++i)
 147         {
 148                 ConfigTag* tag = i->second;
 149
 150                 std::string name = tag->getString("name");
 151                 if (name.empty())
 152                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 153
 154                 std::string type = tag->getString("type");
 155                 OperIndex::iterator tblk = oper_blocks.find(" " + type);
 156                 if (tblk == oper_blocks.end())
 157                         throw CoreException("Oper block " + name + " has missing type " + type);
 158                 if (oper_blocks.find(name) != oper_blocks.end())
 159                         throw CoreException("Duplicate oper block with name " + name + " at " + tag->getTagLocation());
 160
 161                 OperInfo* ifo = new OperInfo;
 162                 ifo->name = type;
 163                 ifo->oper_block = tag;
 164                 ifo->type_block = tblk->second->type_block;
 165                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 166                 oper_blocks[name] = ifo;
 167         }
 168 }
 169
 170 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 171 {
 172         typedef std::map<std::string, ConnectClass*> ClassMap;
 173         ClassMap oldBlocksByMask;
 174         if (current)
 175         {
 176                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 177                 {
 178                         ConnectClass* c = *i;
 179                         if (c->name.substr(0, 8) != "unnamed-")
 180                         {
 181                                 oldBlocksByMask["n" + c->name] = c;
 182                         }
 183                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 184                         {
 185                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 186                                 typeMask += c->host;
 187                                 oldBlocksByMask[typeMask] = c;
 188                         }
 189                 }
 190         }
 191
 192         int blk_count = config_data.count("connect");
 193         if (blk_count == 0)
 194         {
 195                 // No connect blocks found; make a trivial default block
 196                 std::vector<KeyVal>* items;
 197                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 198                 items->push_back(std::make_pair("allow", "*"));
 199                 config_data.insert(std::make_pair("connect", tag));
 200                 blk_count = 1;
 201         }
 202
 203         Classes.resize(blk_count);
 204         std::map<std::string, int> names;
 205
 206         bool try_again = true;
 207         for(int tries=0; try_again; tries++)
 208         {
 209                 try_again = false;
 210                 ConfigTagList tags = ConfTags("connect");
 211                 int i=0;
 212                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 213                 {
 214                         ConfigTag* tag = it->second;
 215                         if (Classes[i])
 216                                 continue;
 217
 218                         ConnectClass* parent = NULL;
 219                         std::string parentName = tag->getString("parent");
 220                         if (!parentName.empty())
 221                         {
 222                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 223                                 if (parentIter == names.end())
 224                                 {
 225                                         try_again = true;
 226                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 227                                         if (tries >= blk_count)
 228                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 229                                         continue;
 230                                 }
 231                                 parent = Classes[parentIter->second];
 232                         }
 233
 234                         std::string name = tag->getString("name");
 235                         std::string mask, typeMask;
 236                         char type;
 237
 238                         if (tag->readString("allow", mask, false))
 239                         {
 240                                 type = CC_ALLOW;
 241                                 typeMask = 'a' + mask;
 242                         }
 243                         else if (tag->readString("deny", mask, false))
 244                         {
 245                                 type = CC_DENY;
 246                                 typeMask = 'd' + mask;
 247                         }
 248                         else if (!name.empty())
 249                         {
 250                                 type = CC_NAMED;
 251                                 mask = name;
 252                                 typeMask = 'n' + mask;
 253                         }
 254                         else
 255                         {
 256                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 257                         }
 258
 259                         if (name.empty())
 260                         {
 261                                 name = "unnamed-" + ConvToStr(i);
 262                         }
 263                         else
 264                         {
 265                                 typeMask = 'n' + name;
 266                         }
 267
 268                         if (names.find(name) != names.end())
 269                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 270                         names[name] = i;
 271
 272                         ConnectClass* me = parent ?
 273                                 new ConnectClass(tag, type, mask, *parent) :
 274                                 new ConnectClass(tag, type, mask);
 275
 276                         me->name = name;
 277
 278                         me->registration_timeout = tag->getInt("timeout", me->registration_timeout);
 279                         me->pingtime = tag->getInt("pingfreq", me->pingtime);
 280                         std::string sendq;
 281                         if (tag->readString("sendq", sendq))
 282                         {
 283                                 // attempt to guess a good hard/soft sendq from a single value
 284                                 long value = atol(sendq.c_str());
 285                                 if (value > 16384)
 286                                         me->softsendqmax = value / 16;
 287                                 else
 288                                         me->softsendqmax = value;
 289                                 me->hardsendqmax = value * 8;
 290                         }
 291                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 292                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 293                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 294                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 295                         me->commandrate = tag->getInt("commandrate", me->commandrate);
 296                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 297                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 298                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 299                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 300                         me->maxconnwarn = tag->getBool("maxconnwarn", me->maxconnwarn);
 301                         me->limit = tag->getInt("limit", me->limit);
 302                         me->resolvehostnames = tag->getBool("resolvehostnames", me->resolvehostnames);
 303
 304                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 305                         if (oldMask != oldBlocksByMask.end())
 306                         {
 307                                 ConnectClass* old = oldMask->second;
 308                                 oldBlocksByMask.erase(oldMask);
 309                                 old->Update(me);
 310                                 delete me;
 311                                 me = old;
 312                         }
 313                         Classes[i] = me;
 314                 }
 315         }
 316 }
 317
 318 /** Represents a deprecated configuration tag.
 319  */
 320 struct DeprecatedConfig
 321 {
 322         /** Tag name. */
 323         std::string tag;
 324
 325         /** Attribute key. */
 326         std::string key;
 327
 328         /** Attribute value. */
 329         std::string value;
 330
 331         /** Reason for deprecation. */
 332         std::string reason;
 333 };
 334
 335 static const DeprecatedConfig ChangedConfig[] = {
 336         { "bind",        "transport",   "",                 "has been moved to <bind:ssl> as of 2.0" },
 337         { "die",         "value",       "",                 "you need to reread your config" },
 338         { "link",        "autoconnect", "",                 "2.0+ does not use this attribute - define <autoconnect> tags instead" },
 339         { "link",        "transport",   "",                 "has been moved to <link:ssl> as of 2.0" },
 340         { "module",      "name",        "m_chanprotect.so", "has been replaced with m_customprefix as of 2.2" },
 341         { "module",      "name",        "m_halfop.so",      "has been replaced with m_customprefix as of 2.2" },
 342         { "options",     "cyclehosts",  "",                 "has been replaced with m_hostcycle as of 2.2" },
 343         { "performance", "nouserdns",   "",                 "has been moved to <connect:resolvehostnames> as of 2.2" }
 344 };
 345
 346 void ServerConfig::Fill()
 347 {
 348         ConfigTag* options = ConfValue("options");
 349         ConfigTag* security = ConfValue("security");
 350         if (sid.empty())
 351         {
 352                 ServerName = ConfValue("server")->getString("name", "irc.example.com");
 353                 ValidHost(ServerName, "<server:name>");
 354
 355                 sid = ConfValue("server")->getString("id");
 356                 if (!sid.empty() && !InspIRCd::IsSID(sid))
 357                         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.");
 358         }
 359         else
 360         {
 361                 if (ServerName != ConfValue("server")->getString("name"))
 362                         throw CoreException("You must restart to change the server name");
 363
 364                 std::string nsid = ConfValue("server")->getString("id");
 365                 if (!nsid.empty() && nsid != sid)
 366                         throw CoreException("You must restart to change the server id");
 367         }
 368         diepass = ConfValue("power")->getString("diepass");
 369         restartpass = ConfValue("power")->getString("restartpass");
 370         powerhash = ConfValue("power")->getString("hash");
 371         PrefixQuit = options->getString("prefixquit");
 372         SuffixQuit = options->getString("suffixquit");
 373         FixedQuit = options->getString("fixedquit");
 374         PrefixPart = options->getString("prefixpart");
 375         SuffixPart = options->getString("suffixpart");
 376         FixedPart = options->getString("fixedpart");
 377         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds(), 10, ServerInstance->SE->GetMaxFds());
 378         CCOnConnect = ConfValue("performance")->getBool("clonesonconnect", true);
 379         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 380         MoronBanner = options->getString("moronbanner", "You're banned!");
 381         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 382         Network = ConfValue("server")->getString("network", "Network");
 383         AdminName = ConfValue("admin")->getString("name", "");
 384         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 385         AdminNick = ConfValue("admin")->getString("nick", "admin");
 386         ModPath = ConfValue("path")->getString("moduledir", MOD_PATH);
 387         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240, 1024, 65534);
 388         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 389         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 390         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 391         UserStats = security->getString("userstats");
 392         CustomVersion = security->getString("customversion");
 393         HideSplits = security->getBool("hidesplits");
 394         HideBans = security->getBool("hidebans");
 395         HideWhoisServer = security->getString("hidewhois");
 396         HideKillsServer = security->getString("hidekills");
 397         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 398         GenericOper = security->getBool("genericoper");
 399         SyntaxHints = options->getBool("syntaxhints");
 400         CycleHostsFromUser = options->getBool("cyclehostsfromuser");
 401         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 402         FullHostInTopic = options->getBool("hostintopic");
 403         MaxTargets = security->getInt("maxtargets", 20, 1, 31);
 404         DefaultModes = options->getString("defaultmodes", "nt");
 405         PID = ConfValue("pid")->getString("file");
 406         MaxChans = ConfValue("channels")->getInt("users", 20);
 407         OperMaxChans = ConfValue("channels")->getInt("opers", 60);
 408         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 409         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 410         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 411         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 412         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 413         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 414         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 415         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 416         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 417         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 418         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 419         Limits.MaxLine = ConfValue("limits")->getInt("maxline", 512);
 420         InvBypassModes = options->getBool("invitebypassmodes", true);
 421         NoSnoticeStack = options->getBool("nosnoticestack", false);
 422
 423         if (Network.find(' ') != std::string::npos)
 424                 throw CoreException(Network + " is not a valid network name. A network name must not contain spaces.");
 425
 426         std::string defbind = options->getString("defaultbind");
 427         if (assign(defbind) == "ipv4")
 428         {
 429                 WildcardIPv6 = false;
 430         }
 431         else if (assign(defbind) == "ipv6")
 432         {
 433                 WildcardIPv6 = true;
 434         }
 435         else
 436         {
 437                 WildcardIPv6 = true;
 438                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 439                 if (socktest < 0)
 440                         WildcardIPv6 = false;
 441                 else
 442                         ServerInstance->SE->Close(socktest);
 443         }
 444         ConfigTagList tags = ConfTags("uline");
 445         for(ConfigIter i = tags.first; i != tags.second; ++i)
 446         {
 447                 ConfigTag* tag = i->second;
 448                 std::string server;
 449                 if (!tag->readString("server", server))
 450                         throw CoreException("<uline> tag missing server at " + tag->getTagLocation());
 451
 452                 if (ServerName == server)
 453                         throw CoreException("Servers should not uline themselves (at " + tag->getTagLocation() + ")");
 454
 455                 ulines[assign(server)] = tag->getBool("silent");
 456         }
 457
 458         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 459         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 460         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 461         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 462
 463         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 464         std::string modes = ConfValue("disabled")->getString("usermodes");
 465         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 466         {
 467                 // Complain when the character is not a-z or A-Z
 468                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 469                         throw CoreException("Invalid usermode " + std::string(1, *p) + " was found.");
 470                 DisabledUModes[*p - 'A'] = 1;
 471         }
 472
 473         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 474         modes = ConfValue("disabled")->getString("chanmodes");
 475         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 476         {
 477                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 478                         throw CoreException("Invalid chanmode " + std::string(1, *p) + " was found.");
 479                 DisabledCModes[*p - 'A'] = 1;
 480         }
 481
 482         memset(HideModeLists, 0, sizeof(HideModeLists));
 483         modes = ConfValue("security")->getString("hidemodes");
 484         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 485                 HideModeLists[(unsigned char) *p] = true;
 486
 487         std::string v = security->getString("announceinvites");
 488
 489         if (v == "ops")
 490                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 491         else if (v == "all")
 492                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 493         else if (v == "dynamic")
 494                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 495         else
 496                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 497
 498         v = security->getString("operspywhois");
 499         if (v == "splitmsg")
 500                 OperSpyWhois = SPYWHOIS_SPLITMSG;
 501         else if (v == "on" || v == "yes")
 502                 OperSpyWhois = SPYWHOIS_SINGLEMSG;
 503         else
 504                 OperSpyWhois = SPYWHOIS_NONE;
 505 }
 506
 507 // WARNING: it is not safe to use most of the codebase in this function, as it
 508 // will run in the config reader thread
 509 void ServerConfig::Read()
 510 {
 511         /* Load and parse the config file, if there are any errors then explode */
 512
 513         ParseStack stack(this);
 514         try
 515         {
 516                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 517         }
 518         catch (CoreException& err)
 519         {
 520                 valid = false;
 521                 errstr << err.GetReason();
 522         }
 523 }
 524
 525 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 526 {
 527         valid = true;
 528         if (old)
 529         {
 530                 /*
 531                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 532                  */
 533                 this->ServerName = old->ServerName;
 534                 this->sid = old->sid;
 535                 this->cmdline = old->cmdline;
 536         }
 537
 538         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 539         try
 540         {
 541                 for (int index = 0; index * sizeof(DeprecatedConfig) < sizeof(ChangedConfig); index++)
 542                 {
 543                         std::string value;
 544                         ConfigTagList tags = ConfTags(ChangedConfig[index].tag);
 545                         for(ConfigIter i = tags.first; i != tags.second; ++i)
 546                         {
 547                                 if (i->second->readString(ChangedConfig[index].key, value, true)
 548                                         && (ChangedConfig[index].value.empty() || value == ChangedConfig[index].value))
 549                                 {
 550                                         errstr << "Your configuration contains a deprecated value: <"  << ChangedConfig[index].tag;
 551                                         if (ChangedConfig[index].value.empty())
 552                                         {
 553                                                 errstr << ':' << ChangedConfig[index].key;
 554                                         }
 555                                         else
 556                                         {
 557                                                 errstr << ' ' << ChangedConfig[index].key << "=\"" << ChangedConfig[index].value << "\"";
 558                                         }
 559                                         errstr << "> - " << ChangedConfig[index].reason << " (at " << i->second->getTagLocation() << ")" << std::endl;
 560                                 }
 561                         }
 562                 }
 563
 564                 Fill();
 565
 566                 // Handle special items
 567                 CrossCheckOperClassType();
 568                 CrossCheckConnectBlocks(old);
 569         }
 570         catch (CoreException &ce)
 571         {
 572                 errstr << ce.GetReason();
 573         }
 574
 575         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 576         valid = errstr.str().empty();
 577
 578         // write once here, to try it out and make sure its ok
 579         if (valid)
 580                 ServerInstance->WritePID(this->PID);
 581
 582         ConfigTagList binds = ConfTags("bind");
 583         if (binds.first == binds.second)
 584                  errstr << "Possible configuration error: you have not defined any <bind> blocks." << std::endl
 585                          << "You will need to do this if you want clients to be able to connect!" << std::endl;
 586
 587         if (old)
 588         {
 589                 // On first run, ports are bound later on
 590                 FailedPortList pl;
 591                 ServerInstance->BindPorts(pl);
 592                 if (pl.size())
 593                 {
 594                         errstr << "Not all your client ports could be bound." << std::endl
 595                                 << "The following port(s) failed to bind:" << std::endl;
 596
 597                         int j = 1;
 598                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 599                         {
 600                                 errstr << j << ".\tAddress: " << (i->first.empty() ? "<all>" : i->first.c_str()) << "\tReason: "
 601                                         << i->second << std::endl;
 602                         }
 603                 }
 604         }
 605
 606         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 607
 608         if (!valid)
 609                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "There were errors in your configuration file:");
 610
 611         while (errstr.good())
 612         {
 613                 std::string line;
 614                 getline(errstr, line, '\n');
 615                 if (line.empty())
 616                         continue;
 617                 // On startup, print out to console (still attached at this point)
 618                 if (!old)
 619                         std::cout << line << std::endl;
 620                 // If a user is rehashing, tell them directly
 621                 if (user)
 622                         user->SendText(":%s NOTICE %s :*** %s", ServerInstance->Config->ServerName.c_str(), user->nick.c_str(), line.c_str());
 623                 // Also tell opers
 624                 ServerInstance->SNO->WriteGlobalSno('a', line);
 625         }
 626
 627         errstr.clear();
 628         errstr.str(std::string());
 629
 630         // Re-parse our MOTD and RULES files for colors -- Justasic
 631         for (ClassVector::const_iterator it = this->Classes.begin(), it_end = this->Classes.end(); it != it_end; ++it)
 632         {
 633                 ConfigTag *tag = (*it)->config;
 634                 // Make sure our connection class allows motd colors
 635                 if(!tag->getBool("allowmotdcolors"))
 636                       continue;
 637
 638                 ConfigFileCache::iterator file = this->Files.find(tag->getString("motd", "motd"));
 639                 if (file != this->Files.end())
 640                       InspIRCd::ProcessColors(file->second);
 641
 642                 file = this->Files.find(tag->getString("rules", "rules"));
 643                 if (file != this->Files.end())
 644                       InspIRCd::ProcessColors(file->second);
 645         }
 646
 647         /* No old configuration -> initial boot, nothing more to do here */
 648         if (!old)
 649         {
 650                 if (!valid)
 651                 {
 652                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 653                 }
 654
 655                 return;
 656         }
 657
 658
 659         // If there were errors processing configuration, don't touch modules.
 660         if (!valid)
 661                 return;
 662
 663         ApplyModules(user);
 664
 665         if (user)
 666                 user->SendText(":%s NOTICE %s :*** Successfully rehashed server.",
 667                         ServerInstance->Config->ServerName.c_str(), user->nick.c_str());
 668         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 669 }
 670
 671 void ServerConfig::ApplyModules(User* user)
 672 {
 673         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
 674         std::vector<std::string> added_modules;
 675         std::set<std::string> removed_modules(v.begin(), v.end());
 676
 677         ConfigTagList tags = ConfTags("module");
 678         for(ConfigIter i = tags.first; i != tags.second; ++i)
 679         {
 680                 ConfigTag* tag = i->second;
 681                 std::string name;
 682                 if (tag->readString("name", name))
 683                 {
 684                         // if this module is already loaded, the erase will succeed, so we need do nothing
 685                         // otherwise, we need to add the module (which will be done later)
 686                         if (removed_modules.erase(name) == 0)
 687                                 added_modules.push_back(name);
 688                 }
 689         }
 690
 691         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 692         {
 693                 // Don't remove cmd_*.so, just remove m_*.so
 694                 if (removing->c_str()[0] == 'c')
 695                         continue;
 696                 Module* m = ServerInstance->Modules->Find(*removing);
 697                 if (m && ServerInstance->Modules->Unload(m))
 698                 {
 699                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
 700
 701                         if (user)
 702                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
 703                         else
 704                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
 705                 }
 706                 else
 707                 {
 708                         if (user)
 709                                 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());
 710                         else
 711                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
 712                 }
 713         }
 714
 715         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 716         {
 717                 if (ServerInstance->Modules->Load(adding->c_str()))
 718                 {
 719                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 720                         if (user)
 721                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
 722                         else
 723                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 724                 }
 725                 else
 726                 {
 727                         if (user)
 728                                 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());
 729                         else
 730                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 731                 }
 732         }
 733 }
 734
 735 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
 736 {
 737         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
 738 }
 739
 740 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 741 {
 742         ConfigTagList found = config_data.equal_range(tag);
 743         if (found.first == found.second)
 744                 return NULL;
 745         ConfigTag* rv = found.first->second;
 746         found.first++;
 747         if (found.first != found.second)
 748                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 749                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 750         return rv;
 751 }
 752
 753 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 754 {
 755         return config_data.equal_range(tag);
 756 }
 757
 758 bool ServerConfig::FileExists(const char* file)
 759 {
 760         struct stat sb;
 761         if (stat(file, &sb) == -1)
 762                 return false;
 763
 764         if ((sb.st_mode & S_IFDIR) > 0)
 765                 return false;
 766
 767         return !access(file, F_OK);
 768 }
 769
 770 std::string ServerConfig::Escape(const std::string& str, bool xml)
 771 {
 772         std::string escaped;
 773         for (std::string::const_iterator it = str.begin(); it != str.end(); ++it)
 774         {
 775                 switch (*it)
 776                 {
 777                         case '"':
 778                                 escaped += xml ? "&quot;" : "\"";
 779                                 break;
 780                         case '&':
 781                                 escaped += xml ? "&amp;" : "&";
 782                                 break;
 783                         case '\\':
 784                                 escaped += xml ? "\\" : "\\\\";
 785                                 break;
 786                         default:
 787                                 escaped += *it;
 788                                 break;
 789                 }
 790         }
 791         return escaped;
 792 }
 793
 794 const char* ServerConfig::CleanFilename(const char* name)
 795 {
 796         const char* p = name + strlen(name);
 797         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
 798         return (p != name ? ++p : p);
 799 }
 800
 801 void ConfigReaderThread::Run()
 802 {
 803         Config->Read();
 804         done = true;
 805 }
 806
 807 void ConfigReaderThread::Finish()
 808 {
 809         ServerConfig* old = ServerInstance->Config;
 810         ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "Switching to new configuration...");
 811         ServerInstance->Config = this->Config;
 812         Config->Apply(old, TheUserUID);
 813
 814         if (Config->valid)
 815         {
 816                 /*
 817                  * Apply the changed configuration from the rehash.
 818                  *
 819                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 820                  * thoroughly!!!
 821                  */
 822                 ServerInstance->XLines->CheckELines();
 823                 ServerInstance->XLines->ApplyLines();
 824                 ChanModeReference ban(NULL, "ban");
 825                 static_cast<ListModeBase*>(*ban)->DoRehash();
 826                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 827                 User* user = ServerInstance->FindNick(TheUserUID);
 828                 FOREACH_MOD(OnRehash, (user));
 829                 ServerInstance->ISupport.Build();
 830
 831                 ServerInstance->Logs->CloseLogs();
 832                 ServerInstance->Logs->OpenFileLogs();
 833
 834                 if (Config->RawLog && !old->RawLog)
 835                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 836
 837                 Config = old;
 838         }
 839         else
 840         {
 841                 // whoops, abort!
 842                 ServerInstance->Config = old;
 843         }
 844 }