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()
  96 {
  97         // Enable everything first.
  98         const CommandParser::CommandMap& commands = ServerInstance->Parser.GetCommands();
  99         for (CommandParser::CommandMap::const_iterator x = commands.begin(); x != commands.end(); ++x)
 100                 x->second->Disable(false);
 101
 102         // Now disable the commands specified in the config.
 103         std::string command;
 104         irc::spacesepstream commandlist(ConfValue("disabled")->getString("commands"));
 105         while (commandlist.GetToken(command))
 106         {
 107                 Command* handler = ServerInstance->Parser.GetHandler(command);
 108                 if (!handler)
 109                 {
 110                         ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "Unable to disable the %s command as it does not exist!", command.c_str());
 111                         continue;
 112                 }
 113
 114                 ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "The %s command has been disabled", command.c_str());
 115                 handler->Disable(true);
 116         }
 117         return true;
 118 }
 119
 120 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
 121 {
 122         ConfigTagList tags = conf->ConfTags(tag);
 123         for(ConfigIter i = tags.first; i != tags.second; ++i)
 124         {
 125                 ConfigTag* ctag = i->second;
 126                 std::string mask;
 127                 if (!ctag->readString(key, mask))
 128                         throw CoreException("<"+tag+":"+key+"> missing at " + ctag->getTagLocation());
 129                 std::string reason = ctag->getString("reason", "<Config>");
 130                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
 131                 if (!ServerInstance->XLines->AddLine(xl, NULL))
 132                         delete xl;
 133         }
 134 }
 135
 136 typedef std::map<std::string, ConfigTag*> LocalIndex;
 137 void ServerConfig::CrossCheckOperClassType()
 138 {
 139         LocalIndex operclass;
 140         ConfigTagList tags = ConfTags("class");
 141         for(ConfigIter i = tags.first; i != tags.second; ++i)
 142         {
 143                 ConfigTag* tag = i->second;
 144                 std::string name = tag->getString("name");
 145                 if (name.empty())
 146                         throw CoreException("<class:name> missing from tag at " + tag->getTagLocation());
 147                 if (operclass.find(name) != operclass.end())
 148                         throw CoreException("Duplicate class block with name " + name + " at " + tag->getTagLocation());
 149                 operclass[name] = tag;
 150         }
 151         tags = ConfTags("type");
 152         for(ConfigIter i = tags.first; i != tags.second; ++i)
 153         {
 154                 ConfigTag* tag = i->second;
 155                 std::string name = tag->getString("name");
 156                 if (name.empty())
 157                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
 158                 if (OperTypes.find(name) != OperTypes.end())
 159                         throw CoreException("Duplicate type block with name " + name + " at " + tag->getTagLocation());
 160
 161                 OperInfo* ifo = new OperInfo;
 162                 OperTypes[name] = ifo;
 163                 ifo->name = name;
 164                 ifo->type_block = tag;
 165
 166                 std::string classname;
 167                 irc::spacesepstream str(tag->getString("classes"));
 168                 while (str.GetToken(classname))
 169                 {
 170                         LocalIndex::iterator cls = operclass.find(classname);
 171                         if (cls == operclass.end())
 172                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 173                         ifo->class_blocks.push_back(cls->second);
 174                 }
 175         }
 176
 177         tags = ConfTags("oper");
 178         for(ConfigIter i = tags.first; i != tags.second; ++i)
 179         {
 180                 ConfigTag* tag = i->second;
 181
 182                 std::string name = tag->getString("name");
 183                 if (name.empty())
 184                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 185
 186                 std::string type = tag->getString("type");
 187                 OperIndex::iterator tblk = OperTypes.find(type);
 188                 if (tblk == OperTypes.end())
 189                         throw CoreException("Oper block " + name + " has missing type " + type);
 190                 if (oper_blocks.find(name) != oper_blocks.end())
 191                         throw CoreException("Duplicate oper block with name " + name + " at " + tag->getTagLocation());
 192
 193                 OperInfo* ifo = new OperInfo;
 194                 ifo->name = type;
 195                 ifo->oper_block = tag;
 196                 ifo->type_block = tblk->second->type_block;
 197                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 198                 oper_blocks[name] = ifo;
 199         }
 200 }
 201
 202 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 203 {
 204         typedef std::map<std::string, ConnectClass*> ClassMap;
 205         ClassMap oldBlocksByMask;
 206         if (current)
 207         {
 208                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 209                 {
 210                         ConnectClass* c = *i;
 211                         if (c->name.compare(0, 8, "unnamed-", 8))
 212                         {
 213                                 oldBlocksByMask["n" + c->name] = c;
 214                         }
 215                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 216                         {
 217                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 218                                 typeMask += c->host;
 219                                 oldBlocksByMask[typeMask] = c;
 220                         }
 221                 }
 222         }
 223
 224         int blk_count = config_data.count("connect");
 225         if (blk_count == 0)
 226         {
 227                 // No connect blocks found; make a trivial default block
 228                 ConfigItems* items;
 229                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 230                 (*items)["allow"] = "*";
 231                 config_data.insert(std::make_pair("connect", tag));
 232                 blk_count = 1;
 233         }
 234
 235         Classes.resize(blk_count);
 236         std::map<std::string, int> names;
 237
 238         bool try_again = true;
 239         for(int tries=0; try_again; tries++)
 240         {
 241                 try_again = false;
 242                 ConfigTagList tags = ConfTags("connect");
 243                 int i=0;
 244                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 245                 {
 246                         ConfigTag* tag = it->second;
 247                         if (Classes[i])
 248                                 continue;
 249
 250                         ConnectClass* parent = NULL;
 251                         std::string parentName = tag->getString("parent");
 252                         if (!parentName.empty())
 253                         {
 254                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 255                                 if (parentIter == names.end())
 256                                 {
 257                                         try_again = true;
 258                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 259                                         if (tries >= blk_count)
 260                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 261                                         continue;
 262                                 }
 263                                 parent = Classes[parentIter->second];
 264                         }
 265
 266                         std::string name = tag->getString("name");
 267                         std::string mask, typeMask;
 268                         char type;
 269
 270                         if (tag->readString("allow", mask, false))
 271                         {
 272                                 type = CC_ALLOW;
 273                                 typeMask = 'a' + mask;
 274                         }
 275                         else if (tag->readString("deny", mask, false))
 276                         {
 277                                 type = CC_DENY;
 278                                 typeMask = 'd' + mask;
 279                         }
 280                         else if (!name.empty())
 281                         {
 282                                 type = CC_NAMED;
 283                                 mask = name;
 284                                 typeMask = 'n' + mask;
 285                         }
 286                         else
 287                         {
 288                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 289                         }
 290
 291                         if (name.empty())
 292                         {
 293                                 name = "unnamed-" + ConvToStr(i);
 294                         }
 295                         else
 296                         {
 297                                 typeMask = 'n' + name;
 298                         }
 299
 300                         if (names.find(name) != names.end())
 301                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 302                         names[name] = i;
 303
 304                         ConnectClass* me = parent ?
 305                                 new ConnectClass(tag, type, mask, *parent) :
 306                                 new ConnectClass(tag, type, mask);
 307
 308                         me->name = name;
 309
 310                         me->registration_timeout = tag->getDuration("timeout", me->registration_timeout);
 311                         me->pingtime = tag->getDuration("pingfreq", me->pingtime);
 312                         std::string sendq;
 313                         if (tag->readString("sendq", sendq))
 314                         {
 315                                 // attempt to guess a good hard/soft sendq from a single value
 316                                 long value = atol(sendq.c_str());
 317                                 if (value > 16384)
 318                                         me->softsendqmax = value / 16;
 319                                 else
 320                                         me->softsendqmax = value;
 321                                 me->hardsendqmax = value * 8;
 322                         }
 323                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 324                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 325                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 326                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 327                         me->commandrate = tag->getInt("commandrate", me->commandrate);
 328                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 329                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 330                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 331                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 332                         me->maxconnwarn = tag->getBool("maxconnwarn", me->maxconnwarn);
 333                         me->limit = tag->getInt("limit", me->limit);
 334                         me->resolvehostnames = tag->getBool("resolvehostnames", me->resolvehostnames);
 335
 336                         std::string ports = tag->getString("port");
 337                         if (!ports.empty())
 338                         {
 339                                 irc::portparser portrange(ports, false);
 340                                 while (int port = portrange.GetToken())
 341                                         me->ports.insert(port);
 342                         }
 343
 344                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 345                         if (oldMask != oldBlocksByMask.end())
 346                         {
 347                                 ConnectClass* old = oldMask->second;
 348                                 oldBlocksByMask.erase(oldMask);
 349                                 old->Update(me);
 350                                 delete me;
 351                                 me = old;
 352                         }
 353                         Classes[i] = me;
 354                 }
 355         }
 356 }
 357
 358 /** Represents a deprecated configuration tag.
 359  */
 360 struct DeprecatedConfig
 361 {
 362         /** Tag name. */
 363         std::string tag;
 364
 365         /** Attribute key. */
 366         std::string key;
 367
 368         /** Attribute value. */
 369         std::string value;
 370
 371         /** Reason for deprecation. */
 372         std::string reason;
 373 };
 374
 375 static const DeprecatedConfig ChangedConfig[] = {
 376         { "bind",        "transport",   "",                 "has been moved to <bind:ssl> as of 2.0" },
 377         { "die",         "value",       "",                 "you need to reread your config" },
 378         { "gnutls",      "starttls",    "",                 "has been replaced with m_starttls as of 3.0" },
 379         { "link",        "autoconnect", "",                 "2.0+ does not use this attribute - define <autoconnect> tags instead" },
 380         { "link",        "transport",   "",                 "has been moved to <link:ssl> as of 2.0" },
 381         { "module",      "name",        "m_chanprotect.so", "has been replaced with m_customprefix as of 3.0" },
 382         { "module",      "name",        "m_halfop.so",      "has been replaced with m_customprefix as of 3.0" },
 383         { "options",     "cyclehosts",  "",                 "has been replaced with m_hostcycle as of 3.0" },
 384         { "performance", "nouserdns",   "",                 "has been moved to <connect:resolvehostnames> as of 3.0" }
 385 };
 386
 387 void ServerConfig::Fill()
 388 {
 389         ConfigTag* options = ConfValue("options");
 390         ConfigTag* security = ConfValue("security");
 391         ConfigTag* server = ConfValue("server");
 392         if (sid.empty())
 393         {
 394                 ServerName = server->getString("name", "irc.example.com");
 395                 ValidHost(ServerName, "<server:name>");
 396
 397                 sid = server->getString("id");
 398                 if (!sid.empty() && !InspIRCd::IsSID(sid))
 399                         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.");
 400
 401                 CaseMapping = options->getString("casemapping", "rfc1459");
 402                 if (CaseMapping == "ascii")
 403                         national_case_insensitive_map = ascii_case_insensitive_map;
 404                 else if (CaseMapping == "rfc1459")
 405                         national_case_insensitive_map = rfc_case_insensitive_map;
 406                 else
 407                         throw CoreException("<options:casemapping> must be set to 'ascii', or 'rfc1459'");
 408         }
 409         else
 410         {
 411                 std::string name = server->getString("name");
 412                 if (!name.empty() && name != ServerName)
 413                         throw CoreException("You must restart to change the server name");
 414
 415                 std::string nsid = server->getString("id");
 416                 if (!nsid.empty() && nsid != sid)
 417                         throw CoreException("You must restart to change the server id");
 418
 419                 std::string casemapping = options->getString("casemapping");
 420                 if (!casemapping.empty() && casemapping != CaseMapping)
 421                         throw CoreException("You must restart to change the server casemapping");
 422
 423         }
 424         SoftLimit = ConfValue("performance")->getInt("softlimit", (SocketEngine::GetMaxFds() > 0 ? SocketEngine::GetMaxFds() : LONG_MAX), 10);
 425         CCOnConnect = ConfValue("performance")->getBool("clonesonconnect", true);
 426         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 427         XLineMessage = options->getString("xlinemessage", options->getString("moronbanner", "You're banned!"));
 428         ServerDesc = server->getString("description", "Configure Me");
 429         Network = server->getString("network", "Network");
 430         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240, 1024, 65534);
 431         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 432         UserStats = security->getString("userstats");
 433         CustomVersion = security->getString("customversion");
 434         HideSplits = security->getBool("hidesplits");
 435         HideBans = security->getBool("hidebans");
 436         HideWhoisServer = security->getString("hidewhois");
 437         HideKillsServer = security->getString("hidekills");
 438         HideULineKills = security->getBool("hideulinekills");
 439         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 440         GenericOper = security->getBool("genericoper");
 441         SyntaxHints = options->getBool("syntaxhints");
 442         CycleHostsFromUser = options->getBool("cyclehostsfromuser");
 443         FullHostInTopic = options->getBool("hostintopic");
 444         MaxTargets = security->getInt("maxtargets", 20, 1, 31);
 445         DefaultModes = options->getString("defaultmodes", "not");
 446         PID = ConfValue("pid")->getString("file");
 447         MaxChans = ConfValue("channels")->getInt("users", 20);
 448         OperMaxChans = ConfValue("channels")->getInt("opers");
 449         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 450         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 451         Limits = ServerLimits(ConfValue("limits"));
 452         Paths = ServerPaths(ConfValue("path"));
 453         NoSnoticeStack = options->getBool("nosnoticestack", false);
 454
 455         if (Network.find(' ') != std::string::npos)
 456                 throw CoreException(Network + " is not a valid network name. A network name must not contain spaces.");
 457
 458         std::string defbind = options->getString("defaultbind");
 459         if (stdalgo::string::equalsci(defbind, "ipv4"))
 460         {
 461                 WildcardIPv6 = false;
 462         }
 463         else if (stdalgo::string::equalsci(defbind, "ipv6"))
 464         {
 465                 WildcardIPv6 = true;
 466         }
 467         else
 468         {
 469                 WildcardIPv6 = true;
 470                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 471                 if (socktest < 0)
 472                         WildcardIPv6 = false;
 473                 else
 474                         SocketEngine::Close(socktest);
 475         }
 476
 477         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 478         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 479         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 480         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 481
 482         DisabledUModes.reset();
 483         std::string modes = ConfValue("disabled")->getString("usermodes");
 484         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 485         {
 486                 // Complain when the character is not a valid mode character.
 487                 if (!ModeParser::IsModeChar(*p))
 488                         throw CoreException("Invalid usermode " + std::string(1, *p) + " was found.");
 489                 DisabledUModes.set(*p - 'A');
 490         }
 491
 492         DisabledCModes.reset();
 493         modes = ConfValue("disabled")->getString("chanmodes");
 494         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 495         {
 496                 if (!ModeParser::IsModeChar(*p))
 497                         throw CoreException("Invalid chanmode " + std::string(1, *p) + " was found.");
 498                 DisabledCModes.set(*p - 'A');
 499         }
 500
 501         std::string v = security->getString("announceinvites");
 502
 503         if (v == "ops")
 504                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 505         else if (v == "all")
 506                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 507         else if (v == "dynamic")
 508                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 509         else
 510                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 511
 512         v = security->getString("operspywhois");
 513         if (v == "splitmsg")
 514                 OperSpyWhois = SPYWHOIS_SPLITMSG;
 515         else if (v == "on" || v == "yes")
 516                 OperSpyWhois = SPYWHOIS_SINGLEMSG;
 517         else
 518                 OperSpyWhois = SPYWHOIS_NONE;
 519 }
 520
 521 // WARNING: it is not safe to use most of the codebase in this function, as it
 522 // will run in the config reader thread
 523 void ServerConfig::Read()
 524 {
 525         /* Load and parse the config file, if there are any errors then explode */
 526
 527         ParseStack stack(this);
 528         try
 529         {
 530                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 531         }
 532         catch (CoreException& err)
 533         {
 534                 valid = false;
 535                 errstr << err.GetReason() << std::endl;
 536         }
 537 }
 538
 539 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 540 {
 541         valid = true;
 542         if (old)
 543         {
 544                 /*
 545                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 546                  */
 547                 this->CaseMapping = old->CaseMapping;
 548                 this->ServerName = old->ServerName;
 549                 this->sid = old->sid;
 550                 this->cmdline = old->cmdline;
 551         }
 552
 553         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 554         try
 555         {
 556                 for (int index = 0; index * sizeof(DeprecatedConfig) < sizeof(ChangedConfig); index++)
 557                 {
 558                         std::string value;
 559                         ConfigTagList tags = ConfTags(ChangedConfig[index].tag);
 560                         for(ConfigIter i = tags.first; i != tags.second; ++i)
 561                         {
 562                                 if (i->second->readString(ChangedConfig[index].key, value, true)
 563                                         && (ChangedConfig[index].value.empty() || value == ChangedConfig[index].value))
 564                                 {
 565                                         errstr << "Your configuration contains a deprecated value: <"  << ChangedConfig[index].tag;
 566                                         if (ChangedConfig[index].value.empty())
 567                                         {
 568                                                 errstr << ':' << ChangedConfig[index].key;
 569                                         }
 570                                         else
 571                                         {
 572                                                 errstr << ' ' << ChangedConfig[index].key << "=\"" << ChangedConfig[index].value << "\"";
 573                                         }
 574                                         errstr << "> - " << ChangedConfig[index].reason << " (at " << i->second->getTagLocation() << ")" << std::endl;
 575                                 }
 576                         }
 577                 }
 578
 579                 Fill();
 580
 581                 // Handle special items
 582                 CrossCheckOperClassType();
 583                 CrossCheckConnectBlocks(old);
 584         }
 585         catch (CoreException &ce)
 586         {
 587                 errstr << ce.GetReason() << std::endl;
 588         }
 589
 590         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 591         valid = errstr.str().empty();
 592
 593         // write once here, to try it out and make sure its ok
 594         if (valid)
 595                 ServerInstance->WritePID(this->PID, !old);
 596
 597         ConfigTagList binds = ConfTags("bind");
 598         if (binds.first == binds.second)
 599                  errstr << "Possible configuration error: you have not defined any <bind> blocks." << std::endl
 600                          << "You will need to do this if you want clients to be able to connect!" << std::endl;
 601
 602         if (old && valid)
 603         {
 604                 // On first run, ports are bound later on
 605                 FailedPortList pl;
 606                 ServerInstance->BindPorts(pl);
 607                 if (pl.size())
 608                 {
 609                         errstr << "Not all your client ports could be bound." << std::endl
 610                                 << "The following port(s) failed to bind:" << std::endl;
 611
 612                         int j = 1;
 613                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 614                         {
 615                                 errstr << j << ".\tAddress: " << i->first.str() << "\tReason: " << strerror(i->second) << std::endl;
 616                         }
 617                 }
 618         }
 619
 620         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 621
 622         if (!valid)
 623         {
 624                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "There were errors in your configuration file:");
 625                 Classes.clear();
 626         }
 627
 628         while (errstr.good())
 629         {
 630                 std::string line;
 631                 getline(errstr, line, '\n');
 632                 if (line.empty())
 633                         continue;
 634                 // On startup, print out to console (still attached at this point)
 635                 if (!old)
 636                         std::cout << line << std::endl;
 637                 // If a user is rehashing, tell them directly
 638                 if (user)
 639                         user->WriteRemoteNotice(InspIRCd::Format("*** %s", line.c_str()));
 640                 // Also tell opers
 641                 ServerInstance->SNO->WriteGlobalSno('a', line);
 642         }
 643
 644         errstr.clear();
 645         errstr.str(std::string());
 646
 647         // Re-parse our MOTD and RULES files for colors -- Justasic
 648         for (ClassVector::const_iterator it = this->Classes.begin(), it_end = this->Classes.end(); it != it_end; ++it)
 649         {
 650                 ConfigTag *tag = (*it)->config;
 651                 // Make sure our connection class allows motd colors
 652                 if(!tag->getBool("allowmotdcolors"))
 653                         continue;
 654
 655                 ConfigFileCache::iterator file = this->Files.find(tag->getString("motd", "motd"));
 656                 if (file != this->Files.end())
 657                         InspIRCd::ProcessColors(file->second);
 658         }
 659
 660         /* No old configuration -> initial boot, nothing more to do here */
 661         if (!old)
 662         {
 663                 if (!valid)
 664                 {
 665                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 666                 }
 667
 668                 return;
 669         }
 670
 671
 672         // If there were errors processing configuration, don't touch modules.
 673         if (!valid)
 674                 return;
 675
 676         ApplyModules(user);
 677
 678         if (user)
 679                 user->WriteRemoteNotice("*** Successfully rehashed server.");
 680         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 681 }
 682
 683 void ServerConfig::ApplyModules(User* user)
 684 {
 685         std::vector<std::string> added_modules;
 686         ModuleManager::ModuleMap removed_modules = ServerInstance->Modules->GetModules();
 687
 688         ConfigTagList tags = ConfTags("module");
 689         for(ConfigIter i = tags.first; i != tags.second; ++i)
 690         {
 691                 ConfigTag* tag = i->second;
 692                 std::string name;
 693                 if (tag->readString("name", name))
 694                 {
 695                         name = ModuleManager::ExpandModName(name);
 696                         // if this module is already loaded, the erase will succeed, so we need do nothing
 697                         // otherwise, we need to add the module (which will be done later)
 698                         if (removed_modules.erase(name) == 0)
 699                                 added_modules.push_back(name);
 700                 }
 701         }
 702
 703         for (ModuleManager::ModuleMap::iterator i = removed_modules.begin(); i != removed_modules.end(); ++i)
 704         {
 705                 const std::string& modname = i->first;
 706                 // Don't remove core_*.so, just remove m_*.so
 707                 if (InspIRCd::Match(modname, "core_*.so", ascii_case_insensitive_map))
 708                         continue;
 709                 if (ServerInstance->Modules->Unload(i->second))
 710                 {
 711                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s", modname.c_str());
 712
 713                         if (user)
 714                                 user->WriteNumeric(RPL_UNLOADEDMODULE, modname, InspIRCd::Format("Module %s successfully unloaded.", modname.c_str()));
 715                         else
 716                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", modname.c_str());
 717                 }
 718                 else
 719                 {
 720                         if (user)
 721                                 user->WriteNumeric(ERR_CANTUNLOADMODULE, modname, InspIRCd::Format("Failed to unload module %s: %s", modname.c_str(), ServerInstance->Modules->LastError().c_str()));
 722                         else
 723                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", modname.c_str(), ServerInstance->Modules->LastError().c_str());
 724                 }
 725         }
 726
 727         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 728         {
 729                 // Skip modules which are already loaded.
 730                 if (ServerInstance->Modules->Find(*adding))
 731                         continue;
 732
 733                 if (ServerInstance->Modules->Load(*adding))
 734                 {
 735                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 736                         if (user)
 737                                 user->WriteNumeric(RPL_LOADEDMODULE, *adding, InspIRCd::Format("Module %s successfully loaded.", adding->c_str()));
 738                         else
 739                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 740                 }
 741                 else
 742                 {
 743                         if (user)
 744                                 user->WriteNumeric(ERR_CANTLOADMODULE, *adding, InspIRCd::Format("Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str()));
 745                         else
 746                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 747                 }
 748         }
 749 }
 750
 751 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 752 {
 753         ConfigTagList found = config_data.equal_range(tag);
 754         if (found.first == found.second)
 755                 return EmptyTag;
 756         ConfigTag* rv = found.first->second;
 757         found.first++;
 758         if (found.first != found.second)
 759                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 760                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 761         return rv;
 762 }
 763
 764 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 765 {
 766         return config_data.equal_range(tag);
 767 }
 768
 769 std::string ServerConfig::Escape(const std::string& str, bool xml)
 770 {
 771         std::string escaped;
 772         for (std::string::const_iterator it = str.begin(); it != str.end(); ++it)
 773         {
 774                 switch (*it)
 775                 {
 776                         case '"':
 777                                 escaped += xml ? "&quot;" : "\"";
 778                                 break;
 779                         case '&':
 780                                 escaped += xml ? "&amp;" : "&";
 781                                 break;
 782                         case '\\':
 783                                 escaped += xml ? "\\" : "\\\\";
 784                                 break;
 785                         default:
 786                                 escaped += *it;
 787                                 break;
 788                 }
 789         }
 790         return escaped;
 791 }
 792
 793 void ConfigReaderThread::Run()
 794 {
 795         Config->Read();
 796         done = true;
 797 }
 798
 799 void ConfigReaderThread::Finish()
 800 {
 801         ServerConfig* old = ServerInstance->Config;
 802         ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "Switching to new configuration...");
 803         ServerInstance->Config = this->Config;
 804         Config->Apply(old, TheUserUID);
 805
 806         if (Config->valid)
 807         {
 808                 /*
 809                  * Apply the changed configuration from the rehash.
 810                  *
 811                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 812                  * thoroughly!!!
 813                  */
 814                 ServerInstance->Users.RehashCloneCounts();
 815                 ServerInstance->XLines->CheckELines();
 816                 ServerInstance->XLines->ApplyLines();
 817                 ChanModeReference ban(NULL, "ban");
 818                 static_cast<ListModeBase*>(*ban)->DoRehash();
 819                 Config->ApplyDisabledCommands();
 820                 User* user = ServerInstance->FindNick(TheUserUID);
 821
 822                 ConfigStatus status(user);
 823                 const ModuleManager::ModuleMap& mods = ServerInstance->Modules->GetModules();
 824                 for (ModuleManager::ModuleMap::const_iterator i = mods.begin(); i != mods.end(); ++i)
 825                         i->second->ReadConfig(status);
 826
 827                 // The description of this server may have changed - update it for WHOIS etc.
 828                 ServerInstance->FakeClient->server->description = Config->ServerDesc;
 829
 830                 ServerInstance->ISupport.Build();
 831
 832                 ServerInstance->Logs->CloseLogs();
 833                 ServerInstance->Logs->OpenFileLogs();
 834
 835                 if (Config->RawLog && !old->RawLog)
 836                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 837
 838                 Config = old;
 839         }
 840         else
 841         {
 842                 // whoops, abort!
 843                 ServerInstance->Config = old;
 844         }
 845 }