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 (OperTypes.find(name) != OperTypes.end())
 127                         throw CoreException("Duplicate type block with name " + name + " at " + tag->getTagLocation());
 128
 129                 OperInfo* ifo = new OperInfo;
 130                 OperTypes[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 = OperTypes.find(type);
 156                 if (tblk == OperTypes.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         XLineMessage = options->getString("xlinemessage", 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         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240, 1024, 65534);
 387         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 388         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 389         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 390         UserStats = security->getString("userstats");
 391         CustomVersion = security->getString("customversion");
 392         HideSplits = security->getBool("hidesplits");
 393         HideBans = security->getBool("hidebans");
 394         HideWhoisServer = security->getString("hidewhois");
 395         HideKillsServer = security->getString("hidekills");
 396         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 397         GenericOper = security->getBool("genericoper");
 398         SyntaxHints = options->getBool("syntaxhints");
 399         CycleHostsFromUser = options->getBool("cyclehostsfromuser");
 400         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 401         FullHostInTopic = options->getBool("hostintopic");
 402         MaxTargets = security->getInt("maxtargets", 20, 1, 31);
 403         DefaultModes = options->getString("defaultmodes", "not");
 404         PID = ConfValue("pid")->getString("file");
 405         MaxChans = ConfValue("channels")->getInt("users", 20);
 406         OperMaxChans = ConfValue("channels")->getInt("opers", 60);
 407         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 408         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 409         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 410         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 411         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 412         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 413         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 414         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 415         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 416         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 417         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 418         Limits.MaxLine = ConfValue("limits")->getInt("maxline", 512);
 419         Paths.Config = ConfValue("path")->getString("configdir", CONFIG_PATH);
 420         Paths.Data = ConfValue("path")->getString("datadir", DATA_PATH);
 421         Paths.Log = ConfValue("path")->getString("logdir", LOG_PATH);
 422         Paths.Module = ConfValue("path")->getString("moduledir", MOD_PATH);
 423         InvBypassModes = options->getBool("invitebypassmodes", true);
 424         NoSnoticeStack = options->getBool("nosnoticestack", false);
 425
 426         if (Network.find(' ') != std::string::npos)
 427                 throw CoreException(Network + " is not a valid network name. A network name must not contain spaces.");
 428
 429         std::string defbind = options->getString("defaultbind");
 430         if (assign(defbind) == "ipv4")
 431         {
 432                 WildcardIPv6 = false;
 433         }
 434         else if (assign(defbind) == "ipv6")
 435         {
 436                 WildcardIPv6 = true;
 437         }
 438         else
 439         {
 440                 WildcardIPv6 = true;
 441                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 442                 if (socktest < 0)
 443                         WildcardIPv6 = false;
 444                 else
 445                         ServerInstance->SE->Close(socktest);
 446         }
 447         ConfigTagList tags = ConfTags("uline");
 448         for(ConfigIter i = tags.first; i != tags.second; ++i)
 449         {
 450                 ConfigTag* tag = i->second;
 451                 std::string server;
 452                 if (!tag->readString("server", server))
 453                         throw CoreException("<uline> tag missing server at " + tag->getTagLocation());
 454
 455                 if (ServerName == server)
 456                         throw CoreException("Servers should not uline themselves (at " + tag->getTagLocation() + ")");
 457
 458                 ulines[assign(server)] = tag->getBool("silent");
 459         }
 460
 461         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 462         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 463         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 464         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 465
 466         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 467         std::string modes = ConfValue("disabled")->getString("usermodes");
 468         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 469         {
 470                 // Complain when the character is not a-z or A-Z
 471                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 472                         throw CoreException("Invalid usermode " + std::string(1, *p) + " was found.");
 473                 DisabledUModes[*p - 'A'] = 1;
 474         }
 475
 476         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 477         modes = ConfValue("disabled")->getString("chanmodes");
 478         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 479         {
 480                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 481                         throw CoreException("Invalid chanmode " + std::string(1, *p) + " was found.");
 482                 DisabledCModes[*p - 'A'] = 1;
 483         }
 484
 485         memset(HideModeLists, 0, sizeof(HideModeLists));
 486         modes = ConfValue("security")->getString("hidemodes");
 487         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 488                 HideModeLists[(unsigned char) *p] = true;
 489
 490         std::string v = security->getString("announceinvites");
 491
 492         if (v == "ops")
 493                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 494         else if (v == "all")
 495                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 496         else if (v == "dynamic")
 497                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 498         else
 499                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 500
 501         v = security->getString("operspywhois");
 502         if (v == "splitmsg")
 503                 OperSpyWhois = SPYWHOIS_SPLITMSG;
 504         else if (v == "on" || v == "yes")
 505                 OperSpyWhois = SPYWHOIS_SINGLEMSG;
 506         else
 507                 OperSpyWhois = SPYWHOIS_NONE;
 508 }
 509
 510 // WARNING: it is not safe to use most of the codebase in this function, as it
 511 // will run in the config reader thread
 512 void ServerConfig::Read()
 513 {
 514         /* Load and parse the config file, if there are any errors then explode */
 515
 516         ParseStack stack(this);
 517         try
 518         {
 519                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 520         }
 521         catch (CoreException& err)
 522         {
 523                 valid = false;
 524                 errstr << err.GetReason() << std::endl;
 525         }
 526 }
 527
 528 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 529 {
 530         valid = true;
 531         if (old)
 532         {
 533                 /*
 534                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 535                  */
 536                 this->ServerName = old->ServerName;
 537                 this->sid = old->sid;
 538                 this->cmdline = old->cmdline;
 539         }
 540
 541         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 542         try
 543         {
 544                 for (int index = 0; index * sizeof(DeprecatedConfig) < sizeof(ChangedConfig); index++)
 545                 {
 546                         std::string value;
 547                         ConfigTagList tags = ConfTags(ChangedConfig[index].tag);
 548                         for(ConfigIter i = tags.first; i != tags.second; ++i)
 549                         {
 550                                 if (i->second->readString(ChangedConfig[index].key, value, true)
 551                                         && (ChangedConfig[index].value.empty() || value == ChangedConfig[index].value))
 552                                 {
 553                                         errstr << "Your configuration contains a deprecated value: <"  << ChangedConfig[index].tag;
 554                                         if (ChangedConfig[index].value.empty())
 555                                         {
 556                                                 errstr << ':' << ChangedConfig[index].key;
 557                                         }
 558                                         else
 559                                         {
 560                                                 errstr << ' ' << ChangedConfig[index].key << "=\"" << ChangedConfig[index].value << "\"";
 561                                         }
 562                                         errstr << "> - " << ChangedConfig[index].reason << " (at " << i->second->getTagLocation() << ")" << std::endl;
 563                                 }
 564                         }
 565                 }
 566
 567                 Fill();
 568
 569                 // Handle special items
 570                 CrossCheckOperClassType();
 571                 CrossCheckConnectBlocks(old);
 572         }
 573         catch (CoreException &ce)
 574         {
 575                 errstr << ce.GetReason();
 576         }
 577
 578         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 579         valid = errstr.str().empty();
 580
 581         // write once here, to try it out and make sure its ok
 582         if (valid)
 583                 ServerInstance->WritePID(this->PID);
 584
 585         ConfigTagList binds = ConfTags("bind");
 586         if (binds.first == binds.second)
 587                  errstr << "Possible configuration error: you have not defined any <bind> blocks." << std::endl
 588                          << "You will need to do this if you want clients to be able to connect!" << std::endl;
 589
 590         if (old)
 591         {
 592                 // On first run, ports are bound later on
 593                 FailedPortList pl;
 594                 ServerInstance->BindPorts(pl);
 595                 if (pl.size())
 596                 {
 597                         errstr << "Not all your client ports could be bound." << std::endl
 598                                 << "The following port(s) failed to bind:" << std::endl;
 599
 600                         int j = 1;
 601                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 602                         {
 603                                 errstr << j << ".\tAddress: " << (i->first.empty() ? "<all>" : i->first.c_str()) << "\tReason: "
 604                                         << i->second << std::endl;
 605                         }
 606                 }
 607         }
 608
 609         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 610
 611         if (!valid)
 612                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "There were errors in your configuration file:");
 613
 614         while (errstr.good())
 615         {
 616                 std::string line;
 617                 getline(errstr, line, '\n');
 618                 if (line.empty())
 619                         continue;
 620                 // On startup, print out to console (still attached at this point)
 621                 if (!old)
 622                         std::cout << line << std::endl;
 623                 // If a user is rehashing, tell them directly
 624                 if (user)
 625                         user->SendText(":%s NOTICE %s :*** %s", ServerInstance->Config->ServerName.c_str(), user->nick.c_str(), line.c_str());
 626                 // Also tell opers
 627                 ServerInstance->SNO->WriteGlobalSno('a', line);
 628         }
 629
 630         errstr.clear();
 631         errstr.str(std::string());
 632
 633         // Re-parse our MOTD and RULES files for colors -- Justasic
 634         for (ClassVector::const_iterator it = this->Classes.begin(), it_end = this->Classes.end(); it != it_end; ++it)
 635         {
 636                 ConfigTag *tag = (*it)->config;
 637                 // Make sure our connection class allows motd colors
 638                 if(!tag->getBool("allowmotdcolors"))
 639                       continue;
 640
 641                 ConfigFileCache::iterator file = this->Files.find(tag->getString("motd", "motd"));
 642                 if (file != this->Files.end())
 643                       InspIRCd::ProcessColors(file->second);
 644
 645                 file = this->Files.find(tag->getString("rules", "rules"));
 646                 if (file != this->Files.end())
 647                       InspIRCd::ProcessColors(file->second);
 648         }
 649
 650         /* No old configuration -> initial boot, nothing more to do here */
 651         if (!old)
 652         {
 653                 if (!valid)
 654                 {
 655                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 656                 }
 657
 658                 return;
 659         }
 660
 661
 662         // If there were errors processing configuration, don't touch modules.
 663         if (!valid)
 664                 return;
 665
 666         ApplyModules(user);
 667
 668         if (user)
 669                 user->SendText(":%s NOTICE %s :*** Successfully rehashed server.",
 670                         ServerInstance->Config->ServerName.c_str(), user->nick.c_str());
 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                         // if this module is already loaded, the erase will succeed, so we need do nothing
 687                         // otherwise, we need to add the module (which will be done later)
 688                         if (removed_modules.erase(name) == 0)
 689                                 added_modules.push_back(name);
 690                 }
 691         }
 692
 693         for (ModuleManager::ModuleMap::iterator i = removed_modules.begin(); i != removed_modules.end(); ++i)
 694         {
 695                 const std::string& modname = i->first;
 696                 // Don't remove cmd_*.so, just remove m_*.so
 697                 if (modname.c_str()[0] == 'c')
 698                         continue;
 699                 if (ServerInstance->Modules->Unload(i->second))
 700                 {
 701                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s", modname.c_str());
 702
 703                         if (user)
 704                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s :Module %s successfully unloaded.", modname.c_str(), modname.c_str());
 705                         else
 706                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", modname.c_str());
 707                 }
 708                 else
 709                 {
 710                         if (user)
 711                                 user->WriteNumeric(ERR_CANTUNLOADMODULE, "%s :Failed to unload module %s: %s", modname.c_str(), modname.c_str(), ServerInstance->Modules->LastError().c_str());
 712                         else
 713                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", modname.c_str(), ServerInstance->Modules->LastError().c_str());
 714                 }
 715         }
 716
 717         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 718         {
 719                 if (ServerInstance->Modules->Load(adding->c_str()))
 720                 {
 721                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 722                         if (user)
 723                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s :Module %s successfully loaded.", adding->c_str(), adding->c_str());
 724                         else
 725                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 726                 }
 727                 else
 728                 {
 729                         if (user)
 730                                 user->WriteNumeric(ERR_CANTLOADMODULE, "%s :Failed to load module %s: %s", adding->c_str(), adding->c_str(), ServerInstance->Modules->LastError().c_str());
 731                         else
 732                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 733                 }
 734         }
 735 }
 736
 737 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
 738 {
 739         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
 740 }
 741
 742 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 743 {
 744         ConfigTagList found = config_data.equal_range(tag);
 745         if (found.first == found.second)
 746                 return NULL;
 747         ConfigTag* rv = found.first->second;
 748         found.first++;
 749         if (found.first != found.second)
 750                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 751                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 752         return rv;
 753 }
 754
 755 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 756 {
 757         return config_data.equal_range(tag);
 758 }
 759
 760 bool ServerConfig::FileExists(const char* file)
 761 {
 762         struct stat sb;
 763         if (stat(file, &sb) == -1)
 764                 return false;
 765
 766         if ((sb.st_mode & S_IFDIR) > 0)
 767                 return false;
 768
 769         return !access(file, F_OK);
 770 }
 771
 772 std::string ServerConfig::Escape(const std::string& str, bool xml)
 773 {
 774         std::string escaped;
 775         for (std::string::const_iterator it = str.begin(); it != str.end(); ++it)
 776         {
 777                 switch (*it)
 778                 {
 779                         case '"':
 780                                 escaped += xml ? "&quot;" : "\"";
 781                                 break;
 782                         case '&':
 783                                 escaped += xml ? "&amp;" : "&";
 784                                 break;
 785                         case '\\':
 786                                 escaped += xml ? "\\" : "\\\\";
 787                                 break;
 788                         default:
 789                                 escaped += *it;
 790                                 break;
 791                 }
 792         }
 793         return escaped;
 794 }
 795
 796 std::string ServerConfig::ExpandPath(const std::string& base, const std::string& fragment)
 797 {
 798         // The fragment is an absolute path, don't modify it.
 799         if (fragment[0] == '/' || ServerConfig::StartsWithWindowsDriveLetter(fragment))
 800                 return fragment;
 801
 802         return base + '/' + fragment;
 803 }
 804
 805 const char* ServerConfig::CleanFilename(const char* name)
 806 {
 807         const char* p = name + strlen(name);
 808         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
 809         return (p != name ? ++p : p);
 810 }
 811
 812 void ConfigReaderThread::Run()
 813 {
 814         Config->Read();
 815         done = true;
 816 }
 817
 818 void ConfigReaderThread::Finish()
 819 {
 820         ServerConfig* old = ServerInstance->Config;
 821         ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "Switching to new configuration...");
 822         ServerInstance->Config = this->Config;
 823         Config->Apply(old, TheUserUID);
 824
 825         if (Config->valid)
 826         {
 827                 /*
 828                  * Apply the changed configuration from the rehash.
 829                  *
 830                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 831                  * thoroughly!!!
 832                  */
 833                 ServerInstance->XLines->CheckELines();
 834                 ServerInstance->XLines->ApplyLines();
 835                 ChanModeReference ban(NULL, "ban");
 836                 static_cast<ListModeBase*>(*ban)->DoRehash();
 837                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 838                 User* user = ServerInstance->FindNick(TheUserUID);
 839
 840                 ConfigStatus status(user);
 841                 const ModuleManager::ModuleMap& mods = ServerInstance->Modules->GetModules();
 842                 for (ModuleManager::ModuleMap::const_iterator i = mods.begin(); i != mods.end(); ++i)
 843                         i->second->ReadConfig(status);
 844
 845                 ServerInstance->ISupport.Build();
 846
 847                 ServerInstance->Logs->CloseLogs();
 848                 ServerInstance->Logs->OpenFileLogs();
 849
 850                 if (Config->RawLog && !old->RawLog)
 851                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 852
 853                 Config = old;
 854         }
 855         else
 856         {
 857                 // whoops, abort!
 858                 ServerInstance->Config = old;
 859         }
 860 }