src/configreader.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2007-2009 Robin Burchell <robin+git@viroteck.net>
   6  *   Copyright (C) 2006-2009 Dennis Friis <peavey@inspircd.org>
   7  *   Copyright (C) 2006-2008 Craig Edwards <craigedwards@brainbox.cc>
   8  *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
   9  *   Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
  10  *
  11  * This file is part of InspIRCd.  InspIRCd is free software: you can
  12  * redistribute it and/or modify it under the terms of the GNU General Public
  13  * License as published by the Free Software Foundation, version 2.
  14  *
  15  * This program is distributed in the hope that it will be useful, but WITHOUT
  16  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  17  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  18  * details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22  */
  23
  24
  25 #include "inspircd.h"
  26 #include "xline.h"
  27 #include "listmode.h"
  28 #include "exitcodes.h"
  29 #include "configparser.h"
  30 #include <iostream>
  31
  32 ServerLimits::ServerLimits(ConfigTag* tag)
  33         : NickMax(tag->getInt("maxnick", 30))
  34         , ChanMax(tag->getInt("maxchan", 64))
  35         , MaxModes(tag->getInt("maxmodes", 20))
  36         , IdentMax(tag->getInt("maxident", 10))
  37         , MaxQuit(tag->getInt("maxquit", 255))
  38         , MaxTopic(tag->getInt("maxtopic", 307))
  39         , MaxKick(tag->getInt("maxkick", 255))
  40         , MaxGecos(tag->getInt("maxgecos", 128))
  41         , MaxAway(tag->getInt("maxaway", 200))
  42         , MaxLine(tag->getInt("maxline", 512))
  43         , MaxHost(tag->getInt("maxhost", 64))
  44 {
  45 }
  46
  47 ServerConfig::ServerPaths::ServerPaths(ConfigTag* tag)
  48         : Config(tag->getString("configdir", INSPIRCD_CONFIG_PATH))
  49         , Data(tag->getString("datadir", INSPIRCD_DATA_PATH))
  50         , Log(tag->getString("logdir", INSPIRCD_LOG_PATH))
  51         , Module(tag->getString("moduledir", INSPIRCD_MODULE_PATH))
  52 {
  53 }
  54
  55 static ConfigTag* CreateEmptyTag()
  56 {
  57         ConfigItems* items;
  58         return ConfigTag::create("empty", "<auto>", 0, items);
  59 }
  60
  61 ServerConfig::ServerConfig()
  62         : EmptyTag(CreateEmptyTag())
  63         , Limits(EmptyTag)
  64         , Paths(EmptyTag)
  65         , RawLog(false)
  66         , NoSnoticeStack(false)
  67 {
  68 }
  69
  70 ServerConfig::~ServerConfig()
  71 {
  72         delete EmptyTag;
  73 }
  74
  75 static void ValidHost(const std::string& p, const std::string& msg)
  76 {
  77         int num_dots = 0;
  78         if (p.empty() || p[0] == '.')
  79                 throw CoreException("The value of "+msg+" is not a valid hostname");
  80         for (unsigned int i=0;i < p.length();i++)
  81         {
  82                 switch (p[i])
  83                 {
  84                         case ' ':
  85                                 throw CoreException("The value of "+msg+" is not a valid hostname");
  86                         case '.':
  87                                 num_dots++;
  88                         break;
  89                 }
  90         }
  91         if (num_dots == 0)
  92                 throw CoreException("The value of "+msg+" is not a valid hostname");
  93 }
  94
  95 bool ServerConfig::ApplyDisabledCommands(const std::string& data)
  96 {
  97         std::stringstream dcmds(data);
  98         std::string thiscmd;
  99
 100         /* Enable everything first */
 101         const CommandParser::CommandMap& commands = ServerInstance->Parser.GetCommands();
 102         for (CommandParser::CommandMap::const_iterator x = commands.begin(); x != commands.end(); ++x)
 103                 x->second->Disable(false);
 104
 105         /* Now disable all the ones which the user wants disabled */
 106         while (dcmds >> thiscmd)
 107         {
 108                 Command* handler = ServerInstance->Parser.GetHandler(thiscmd);
 109                 if (handler)
 110                         handler->Disable(true);
 111         }
 112         return true;
 113 }
 114
 115 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
 116 {
 117         ConfigTagList tags = conf->ConfTags(tag);
 118         for(ConfigIter i = tags.first; i != tags.second; ++i)
 119         {
 120                 ConfigTag* ctag = i->second;
 121                 std::string mask;
 122                 if (!ctag->readString(key, mask))
 123                         throw CoreException("<"+tag+":"+key+"> missing at " + ctag->getTagLocation());
 124                 std::string reason = ctag->getString("reason", "<Config>");
 125                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
 126                 if (!ServerInstance->XLines->AddLine(xl, NULL))
 127                         delete xl;
 128         }
 129 }
 130
 131 typedef std::map<std::string, ConfigTag*> LocalIndex;
 132 void ServerConfig::CrossCheckOperClassType()
 133 {
 134         LocalIndex operclass;
 135         ConfigTagList tags = ConfTags("class");
 136         for(ConfigIter i = tags.first; i != tags.second; ++i)
 137         {
 138                 ConfigTag* tag = i->second;
 139                 std::string name = tag->getString("name");
 140                 if (name.empty())
 141                         throw CoreException("<class:name> missing from tag at " + tag->getTagLocation());
 142                 if (operclass.find(name) != operclass.end())
 143                         throw CoreException("Duplicate class block with name " + name + " at " + tag->getTagLocation());
 144                 operclass[name] = tag;
 145         }
 146         tags = ConfTags("type");
 147         for(ConfigIter i = tags.first; i != tags.second; ++i)
 148         {
 149                 ConfigTag* tag = i->second;
 150                 std::string name = tag->getString("name");
 151                 if (name.empty())
 152                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
 153                 if (OperTypes.find(name) != OperTypes.end())
 154                         throw CoreException("Duplicate type block with name " + name + " at " + tag->getTagLocation());
 155
 156                 OperInfo* ifo = new OperInfo;
 157                 OperTypes[name] = ifo;
 158                 ifo->name = name;
 159                 ifo->type_block = tag;
 160
 161                 std::string classname;
 162                 irc::spacesepstream str(tag->getString("classes"));
 163                 while (str.GetToken(classname))
 164                 {
 165                         LocalIndex::iterator cls = operclass.find(classname);
 166                         if (cls == operclass.end())
 167                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 168                         ifo->class_blocks.push_back(cls->second);
 169                 }
 170         }
 171
 172         tags = ConfTags("oper");
 173         for(ConfigIter i = tags.first; i != tags.second; ++i)
 174         {
 175                 ConfigTag* tag = i->second;
 176
 177                 std::string name = tag->getString("name");
 178                 if (name.empty())
 179                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 180
 181                 std::string type = tag->getString("type");
 182                 OperIndex::iterator tblk = OperTypes.find(type);
 183                 if (tblk == OperTypes.end())
 184                         throw CoreException("Oper block " + name + " has missing type " + type);
 185                 if (oper_blocks.find(name) != oper_blocks.end())
 186                         throw CoreException("Duplicate oper block with name " + name + " at " + tag->getTagLocation());
 187
 188                 OperInfo* ifo = new OperInfo;
 189                 ifo->name = type;
 190                 ifo->oper_block = tag;
 191                 ifo->type_block = tblk->second->type_block;
 192                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 193                 oper_blocks[name] = ifo;
 194         }
 195 }
 196
 197 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 198 {
 199         typedef std::map<std::string, ConnectClass*> ClassMap;
 200         ClassMap oldBlocksByMask;
 201         if (current)
 202         {
 203                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 204                 {
 205                         ConnectClass* c = *i;
 206                         if (c->name.compare(0, 8, "unnamed-", 8))
 207                         {
 208                                 oldBlocksByMask["n" + c->name] = c;
 209                         }
 210                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 211                         {
 212                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 213                                 typeMask += c->host;
 214                                 oldBlocksByMask[typeMask] = c;
 215                         }
 216                 }
 217         }
 218
 219         int blk_count = config_data.count("connect");
 220         if (blk_count == 0)
 221         {
 222                 // No connect blocks found; make a trivial default block
 223                 ConfigItems* items;
 224                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 225                 (*items)["allow"] = "*";
 226                 config_data.insert(std::make_pair("connect", tag));
 227                 blk_count = 1;
 228         }
 229
 230         Classes.resize(blk_count);
 231         std::map<std::string, int> names;
 232
 233         bool try_again = true;
 234         for(int tries=0; try_again; tries++)
 235         {
 236                 try_again = false;
 237                 ConfigTagList tags = ConfTags("connect");
 238                 int i=0;
 239                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 240                 {
 241                         ConfigTag* tag = it->second;
 242                         if (Classes[i])
 243                                 continue;
 244
 245                         ConnectClass* parent = NULL;
 246                         std::string parentName = tag->getString("parent");
 247                         if (!parentName.empty())
 248                         {
 249                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 250                                 if (parentIter == names.end())
 251                                 {
 252                                         try_again = true;
 253                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 254                                         if (tries >= blk_count)
 255                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 256                                         continue;
 257                                 }
 258                                 parent = Classes[parentIter->second];
 259                         }
 260
 261                         std::string name = tag->getString("name");
 262                         std::string mask, typeMask;
 263                         char type;
 264
 265                         if (tag->readString("allow", mask, false))
 266                         {
 267                                 type = CC_ALLOW;
 268                                 typeMask = 'a' + mask;
 269                         }
 270                         else if (tag->readString("deny", mask, false))
 271                         {
 272                                 type = CC_DENY;
 273                                 typeMask = 'd' + mask;
 274                         }
 275                         else if (!name.empty())
 276                         {
 277                                 type = CC_NAMED;
 278                                 mask = name;
 279                                 typeMask = 'n' + mask;
 280                         }
 281                         else
 282                         {
 283                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 284                         }
 285
 286                         if (name.empty())
 287                         {
 288                                 name = "unnamed-" + ConvToStr(i);
 289                         }
 290                         else
 291                         {
 292                                 typeMask = 'n' + name;
 293                         }
 294
 295                         if (names.find(name) != names.end())
 296                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 297                         names[name] = i;
 298
 299                         ConnectClass* me = parent ?
 300                                 new ConnectClass(tag, type, mask, *parent) :
 301                                 new ConnectClass(tag, type, mask);
 302
 303                         me->name = name;
 304
 305                         me->registration_timeout = tag->getDuration("timeout", me->registration_timeout);
 306                         me->pingtime = tag->getDuration("pingfreq", me->pingtime);
 307                         std::string sendq;
 308                         if (tag->readString("sendq", sendq))
 309                         {
 310                                 // attempt to guess a good hard/soft sendq from a single value
 311                                 long value = atol(sendq.c_str());
 312                                 if (value > 16384)
 313                                         me->softsendqmax = value / 16;
 314                                 else
 315                                         me->softsendqmax = value;
 316                                 me->hardsendqmax = value * 8;
 317                         }
 318                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 319                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 320                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 321                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 322                         me->commandrate = tag->getInt("commandrate", me->commandrate);
 323                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 324                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 325                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 326                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 327                         me->maxconnwarn = tag->getBool("maxconnwarn", me->maxconnwarn);
 328                         me->limit = tag->getInt("limit", me->limit);
 329                         me->resolvehostnames = tag->getBool("resolvehostnames", me->resolvehostnames);
 330
 331                         std::string ports = tag->getString("port");
 332                         if (!ports.empty())
 333                         {
 334                                 irc::portparser portrange(ports, false);
 335                                 while (int port = portrange.GetToken())
 336                                         me->ports.insert(port);
 337                         }
 338
 339                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 340                         if (oldMask != oldBlocksByMask.end())
 341                         {
 342                                 ConnectClass* old = oldMask->second;
 343                                 oldBlocksByMask.erase(oldMask);
 344                                 old->Update(me);
 345                                 delete me;
 346                                 me = old;
 347                         }
 348                         Classes[i] = me;
 349                 }
 350         }
 351 }
 352
 353 /** Represents a deprecated configuration tag.
 354  */
 355 struct DeprecatedConfig
 356 {
 357         /** Tag name. */
 358         std::string tag;
 359
 360         /** Attribute key. */
 361         std::string key;
 362
 363         /** Attribute value. */
 364         std::string value;
 365
 366         /** Reason for deprecation. */
 367         std::string reason;
 368 };
 369
 370 static const DeprecatedConfig ChangedConfig[] = {
 371         { "bind",        "transport",   "",                 "has been moved to <bind:ssl> as of 2.0" },
 372         { "die",         "value",       "",                 "you need to reread your config" },
 373         { "gnutls",      "starttls",    "",                 "has been replaced with m_starttls as of 3.0" },
 374         { "link",        "autoconnect", "",                 "2.0+ does not use this attribute - define <autoconnect> tags instead" },
 375         { "link",        "transport",   "",                 "has been moved to <link:ssl> as of 2.0" },
 376         { "module",      "name",        "m_chanprotect.so", "has been replaced with m_customprefix as of 3.0" },
 377         { "module",      "name",        "m_halfop.so",      "has been replaced with m_customprefix as of 3.0" },
 378         { "options",     "cyclehosts",  "",                 "has been replaced with m_hostcycle as of 3.0" },
 379         { "performance", "nouserdns",   "",                 "has been moved to <connect:resolvehostnames> as of 3.0" }
 380 };
 381
 382 void ServerConfig::Fill()
 383 {
 384         ConfigTag* options = ConfValue("options");
 385         ConfigTag* security = ConfValue("security");
 386         ConfigTag* server = ConfValue("server");
 387         if (sid.empty())
 388         {
 389                 ServerName = server->getString("name", "irc.example.com");
 390                 ValidHost(ServerName, "<server:name>");
 391
 392                 sid = server->getString("id");
 393                 if (!sid.empty() && !InspIRCd::IsSID(sid))
 394                         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.");
 395
 396                 CaseMapping = options->getString("casemapping", "rfc1459");
 397                 if (CaseMapping == "ascii")
 398                         national_case_insensitive_map = ascii_case_insensitive_map;
 399                 else if (CaseMapping == "rfc1459")
 400                         national_case_insensitive_map = rfc_case_insensitive_map;
 401                 else
 402                         throw CoreException("<options:casemapping> must be set to 'ascii', or 'rfc1459'");
 403         }
 404         else
 405         {
 406                 std::string name = server->getString("name");
 407                 if (!name.empty() && name != ServerName)
 408                         throw CoreException("You must restart to change the server name");
 409
 410                 std::string nsid = server->getString("id");
 411                 if (!nsid.empty() && nsid != sid)
 412                         throw CoreException("You must restart to change the server id");
 413
 414                 std::string casemapping = options->getString("casemapping");
 415                 if (!casemapping.empty() && casemapping != CaseMapping)
 416                         throw CoreException("You must restart to change the server casemapping");
 417
 418         }
 419         SoftLimit = ConfValue("performance")->getInt("softlimit", (SocketEngine::GetMaxFds() > 0 ? SocketEngine::GetMaxFds() : LONG_MAX), 10);
 420         CCOnConnect = ConfValue("performance")->getBool("clonesonconnect", true);
 421         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 422         XLineMessage = options->getString("xlinemessage", options->getString("moronbanner", "You're banned!"));
 423         ServerDesc = server->getString("description", "Configure Me");
 424         Network = server->getString("network", "Network");
 425         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240, 1024, 65534);
 426         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 427         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 428         UserStats = security->getString("userstats");
 429         CustomVersion = security->getString("customversion");
 430         HideSplits = security->getBool("hidesplits");
 431         HideBans = security->getBool("hidebans");
 432         HideWhoisServer = security->getString("hidewhois");
 433         HideKillsServer = security->getString("hidekills");
 434         HideULineKills = security->getBool("hideulinekills");
 435         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 436         GenericOper = security->getBool("genericoper");
 437         SyntaxHints = options->getBool("syntaxhints");
 438         CycleHostsFromUser = options->getBool("cyclehostsfromuser");
 439         FullHostInTopic = options->getBool("hostintopic");
 440         MaxTargets = security->getInt("maxtargets", 20, 1, 31);
 441         DefaultModes = options->getString("defaultmodes", "not");
 442         PID = ConfValue("pid")->getString("file");
 443         MaxChans = ConfValue("channels")->getInt("users", 20);
 444         OperMaxChans = ConfValue("channels")->getInt("opers");
 445         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 446         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 447         Limits = ServerLimits(ConfValue("limits"));
 448         Paths = ServerPaths(ConfValue("path"));
 449         NoSnoticeStack = options->getBool("nosnoticestack", false);
 450
 451         if (Network.find(' ') != std::string::npos)
 452                 throw CoreException(Network + " is not a valid network name. A network name must not contain spaces.");
 453
 454         std::string defbind = options->getString("defaultbind");
 455         if (stdalgo::string::equalsci(defbind, "ipv4"))
 456         {
 457                 WildcardIPv6 = false;
 458         }
 459         else if (stdalgo::string::equalsci(defbind, "ipv6"))
 460         {
 461                 WildcardIPv6 = true;
 462         }
 463         else
 464         {
 465                 WildcardIPv6 = true;
 466                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 467                 if (socktest < 0)
 468                         WildcardIPv6 = false;
 469                 else
 470                         SocketEngine::Close(socktest);
 471         }
 472
 473         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 474         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 475         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 476         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 477
 478         DisabledUModes.reset();
 479         std::string modes = ConfValue("disabled")->getString("usermodes");
 480         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 481         {
 482                 // Complain when the character is not a valid mode character.
 483                 if (!ModeParser::IsModeChar(*p))
 484                         throw CoreException("Invalid usermode " + std::string(1, *p) + " was found.");
 485                 DisabledUModes.set(*p - 'A');
 486         }
 487
 488         DisabledCModes.reset();
 489         modes = ConfValue("disabled")->getString("chanmodes");
 490         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 491         {
 492                 if (!ModeParser::IsModeChar(*p))
 493                         throw CoreException("Invalid chanmode " + std::string(1, *p) + " was found.");
 494                 DisabledCModes.set(*p - 'A');
 495         }
 496
 497         std::string v = security->getString("announceinvites");
 498
 499         if (v == "ops")
 500                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 501         else if (v == "all")
 502                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 503         else if (v == "dynamic")
 504                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 505         else
 506                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 507
 508         v = security->getString("operspywhois");
 509         if (v == "splitmsg")
 510                 OperSpyWhois = SPYWHOIS_SPLITMSG;
 511         else if (v == "on" || v == "yes")
 512                 OperSpyWhois = SPYWHOIS_SINGLEMSG;
 513         else
 514                 OperSpyWhois = SPYWHOIS_NONE;
 515 }
 516
 517 // WARNING: it is not safe to use most of the codebase in this function, as it
 518 // will run in the config reader thread
 519 void ServerConfig::Read()
 520 {
 521         /* Load and parse the config file, if there are any errors then explode */
 522
 523         ParseStack stack(this);
 524         try
 525         {
 526                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 527         }
 528         catch (CoreException& err)
 529         {
 530                 valid = false;
 531                 errstr << err.GetReason() << std::endl;
 532         }
 533 }
 534
 535 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 536 {
 537         valid = true;
 538         if (old)
 539         {
 540                 /*
 541                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 542                  */
 543                 this->CaseMapping = old->CaseMapping;
 544                 this->ServerName = old->ServerName;
 545                 this->sid = old->sid;
 546                 this->cmdline = old->cmdline;
 547         }
 548
 549         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 550         try
 551         {
 552                 for (int index = 0; index * sizeof(DeprecatedConfig) < sizeof(ChangedConfig); index++)
 553                 {
 554                         std::string value;
 555                         ConfigTagList tags = ConfTags(ChangedConfig[index].tag);
 556                         for(ConfigIter i = tags.first; i != tags.second; ++i)
 557                         {
 558                                 if (i->second->readString(ChangedConfig[index].key, value, true)
 559                                         && (ChangedConfig[index].value.empty() || value == ChangedConfig[index].value))
 560                                 {
 561                                         errstr << "Your configuration contains a deprecated value: <"  << ChangedConfig[index].tag;
 562                                         if (ChangedConfig[index].value.empty())
 563                                         {
 564                                                 errstr << ':' << ChangedConfig[index].key;
 565                                         }
 566                                         else
 567                                         {
 568                                                 errstr << ' ' << ChangedConfig[index].key << "=\"" << ChangedConfig[index].value << "\"";
 569                                         }
 570                                         errstr << "> - " << ChangedConfig[index].reason << " (at " << i->second->getTagLocation() << ")" << std::endl;
 571                                 }
 572                         }
 573                 }
 574
 575                 Fill();
 576
 577                 // Handle special items
 578                 CrossCheckOperClassType();
 579                 CrossCheckConnectBlocks(old);
 580         }
 581         catch (CoreException &ce)
 582         {
 583                 errstr << ce.GetReason() << std::endl;
 584         }
 585
 586         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 587         valid = errstr.str().empty();
 588
 589         // write once here, to try it out and make sure its ok
 590         if (valid)
 591                 ServerInstance->WritePID(this->PID, !old);
 592
 593         ConfigTagList binds = ConfTags("bind");
 594         if (binds.first == binds.second)
 595                  errstr << "Possible configuration error: you have not defined any <bind> blocks." << std::endl
 596                          << "You will need to do this if you want clients to be able to connect!" << std::endl;
 597
 598         if (old && valid)
 599         {
 600                 // On first run, ports are bound later on
 601                 FailedPortList pl;
 602                 ServerInstance->BindPorts(pl);
 603                 if (pl.size())
 604                 {
 605                         errstr << "Not all your client ports could be bound." << std::endl
 606                                 << "The following port(s) failed to bind:" << std::endl;
 607
 608                         int j = 1;
 609                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 610                         {
 611                                 errstr << j << ".\tAddress: " << i->first.str() << "\tReason: " << strerror(i->second) << std::endl;
 612                         }
 613                 }
 614         }
 615
 616         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 617
 618         if (!valid)
 619         {
 620                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "There were errors in your configuration file:");
 621                 Classes.clear();
 622         }
 623
 624         while (errstr.good())
 625         {
 626                 std::string line;
 627                 getline(errstr, line, '\n');
 628                 if (line.empty())
 629                         continue;
 630                 // On startup, print out to console (still attached at this point)
 631                 if (!old)
 632                         std::cout << line << std::endl;
 633                 // If a user is rehashing, tell them directly
 634                 if (user)
 635                         user->WriteRemoteNotice(InspIRCd::Format("*** %s", line.c_str()));
 636                 // Also tell opers
 637                 ServerInstance->SNO->WriteGlobalSno('a', line);
 638         }
 639
 640         errstr.clear();
 641         errstr.str(std::string());
 642
 643         // Re-parse our MOTD and RULES files for colors -- Justasic
 644         for (ClassVector::const_iterator it = this->Classes.begin(), it_end = this->Classes.end(); it != it_end; ++it)
 645         {
 646                 ConfigTag *tag = (*it)->config;
 647                 // Make sure our connection class allows motd colors
 648                 if(!tag->getBool("allowmotdcolors"))
 649                         continue;
 650
 651                 ConfigFileCache::iterator file = this->Files.find(tag->getString("motd", "motd"));
 652                 if (file != this->Files.end())
 653                         InspIRCd::ProcessColors(file->second);
 654         }
 655
 656         /* No old configuration -> initial boot, nothing more to do here */
 657         if (!old)
 658         {
 659                 if (!valid)
 660                 {
 661                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 662                 }
 663
 664                 return;
 665         }
 666
 667
 668         // If there were errors processing configuration, don't touch modules.
 669         if (!valid)
 670                 return;
 671
 672         ApplyModules(user);
 673
 674         if (user)
 675                 user->WriteRemoteNotice("*** Successfully rehashed server.");
 676         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 677 }
 678
 679 void ServerConfig::ApplyModules(User* user)
 680 {
 681         std::vector<std::string> added_modules;
 682         ModuleManager::ModuleMap removed_modules = ServerInstance->Modules->GetModules();
 683
 684         ConfigTagList tags = ConfTags("module");
 685         for(ConfigIter i = tags.first; i != tags.second; ++i)
 686         {
 687                 ConfigTag* tag = i->second;
 688                 std::string name;
 689                 if (tag->readString("name", name))
 690                 {
 691                         name = ModuleManager::ExpandModName(name);
 692                         // if this module is already loaded, the erase will succeed, so we need do nothing
 693                         // otherwise, we need to add the module (which will be done later)
 694                         if (removed_modules.erase(name) == 0)
 695                                 added_modules.push_back(name);
 696                 }
 697         }
 698
 699         for (ModuleManager::ModuleMap::iterator i = removed_modules.begin(); i != removed_modules.end(); ++i)
 700         {
 701                 const std::string& modname = i->first;
 702                 // Don't remove core_*.so, just remove m_*.so
 703                 if (InspIRCd::Match(modname, "core_*.so", ascii_case_insensitive_map))
 704                         continue;
 705                 if (ServerInstance->Modules->Unload(i->second))
 706                 {
 707                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s", modname.c_str());
 708
 709                         if (user)
 710                                 user->WriteNumeric(RPL_UNLOADEDMODULE, modname, InspIRCd::Format("Module %s successfully unloaded.", modname.c_str()));
 711                         else
 712                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", modname.c_str());
 713                 }
 714                 else
 715                 {
 716                         if (user)
 717                                 user->WriteNumeric(ERR_CANTUNLOADMODULE, modname, InspIRCd::Format("Failed to unload module %s: %s", modname.c_str(), ServerInstance->Modules->LastError().c_str()));
 718                         else
 719                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", modname.c_str(), ServerInstance->Modules->LastError().c_str());
 720                 }
 721         }
 722
 723         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 724         {
 725                 if (ServerInstance->Modules->Load(*adding))
 726                 {
 727                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 728                         if (user)
 729                                 user->WriteNumeric(RPL_LOADEDMODULE, *adding, InspIRCd::Format("Module %s successfully loaded.", adding->c_str()));
 730                         else
 731                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 732                 }
 733                 else
 734                 {
 735                         if (user)
 736                                 user->WriteNumeric(ERR_CANTLOADMODULE, *adding, InspIRCd::Format("Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str()));
 737                         else
 738                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 739                 }
 740         }
 741 }
 742
 743 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 744 {
 745         ConfigTagList found = config_data.equal_range(tag);
 746         if (found.first == found.second)
 747                 return EmptyTag;
 748         ConfigTag* rv = found.first->second;
 749         found.first++;
 750         if (found.first != found.second)
 751                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 752                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 753         return rv;
 754 }
 755
 756 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 757 {
 758         return config_data.equal_range(tag);
 759 }
 760
 761 std::string ServerConfig::Escape(const std::string& str, bool xml)
 762 {
 763         std::string escaped;
 764         for (std::string::const_iterator it = str.begin(); it != str.end(); ++it)
 765         {
 766                 switch (*it)
 767                 {
 768                         case '"':
 769                                 escaped += xml ? "&quot;" : "\"";
 770                                 break;
 771                         case '&':
 772                                 escaped += xml ? "&amp;" : "&";
 773                                 break;
 774                         case '\\':
 775                                 escaped += xml ? "\\" : "\\\\";
 776                                 break;
 777                         default:
 778                                 escaped += *it;
 779                                 break;
 780                 }
 781         }
 782         return escaped;
 783 }
 784
 785 void ConfigReaderThread::Run()
 786 {
 787         Config->Read();
 788         done = true;
 789 }
 790
 791 void ConfigReaderThread::Finish()
 792 {
 793         ServerConfig* old = ServerInstance->Config;
 794         ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "Switching to new configuration...");
 795         ServerInstance->Config = this->Config;
 796         Config->Apply(old, TheUserUID);
 797
 798         if (Config->valid)
 799         {
 800                 /*
 801                  * Apply the changed configuration from the rehash.
 802                  *
 803                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 804                  * thoroughly!!!
 805                  */
 806                 ServerInstance->Users.RehashCloneCounts();
 807                 ServerInstance->XLines->CheckELines();
 808                 ServerInstance->XLines->ApplyLines();
 809                 ChanModeReference ban(NULL, "ban");
 810                 static_cast<ListModeBase*>(*ban)->DoRehash();
 811                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 812                 User* user = ServerInstance->FindNick(TheUserUID);
 813
 814                 ConfigStatus status(user);
 815                 const ModuleManager::ModuleMap& mods = ServerInstance->Modules->GetModules();
 816                 for (ModuleManager::ModuleMap::const_iterator i = mods.begin(); i != mods.end(); ++i)
 817                         i->second->ReadConfig(status);
 818
 819                 // The description of this server may have changed - update it for WHOIS etc.
 820                 ServerInstance->FakeClient->server->description = Config->ServerDesc;
 821
 822                 ServerInstance->ISupport.Build();
 823
 824                 ServerInstance->Logs->CloseLogs();
 825                 ServerInstance->Logs->OpenFileLogs();
 826
 827                 if (Config->RawLog && !old->RawLog)
 828                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 829
 830                 Config = old;
 831         }
 832         else
 833         {
 834                 // whoops, abort!
 835                 ServerInstance->Config = old;
 836         }
 837 }