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