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", 32))
  34         , ChanMax(tag->getInt("maxchan", 64))
  35         , MaxModes(tag->getInt("maxmodes", 20))
  36         , IdentMax(tag->getInt("maxident", 11))
  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 static ConfigTag* CreateEmptyTag()
  48 {
  49         std::vector<KeyVal>* items;
  50         return ConfigTag::create("empty", "<auto>", 0, items);
  51 }
  52
  53 ServerConfig::ServerConfig()
  54         : EmptyTag(CreateEmptyTag())
  55         , Limits(EmptyTag)
  56         , NoSnoticeStack(false)
  57 {
  58         RawLog = HideBans = HideSplits = false;
  59         WildcardIPv6 = true;
  60         dns_timeout = 5;
  61         MaxTargets = 20;
  62         NetBufferSize = 10240;
  63         MaxConn = SOMAXCONN;
  64         MaxChans = 20;
  65         OperMaxChans = 30;
  66         c_ipv4_range = 32;
  67         c_ipv6_range = 128;
  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                 std::vector<KeyVal>* items;
 224                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 225                 items->push_back(std::make_pair("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->getInt("timeout", me->registration_timeout);
 306                         me->pingtime = tag->getInt("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                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 332                         if (oldMask != oldBlocksByMask.end())
 333                         {
 334                                 ConnectClass* old = oldMask->second;
 335                                 oldBlocksByMask.erase(oldMask);
 336                                 old->Update(me);
 337                                 delete me;
 338                                 me = old;
 339                         }
 340                         Classes[i] = me;
 341                 }
 342         }
 343 }
 344
 345 /** Represents a deprecated configuration tag.
 346  */
 347 struct DeprecatedConfig
 348 {
 349         /** Tag name. */
 350         std::string tag;
 351
 352         /** Attribute key. */
 353         std::string key;
 354
 355         /** Attribute value. */
 356         std::string value;
 357
 358         /** Reason for deprecation. */
 359         std::string reason;
 360 };
 361
 362 static const DeprecatedConfig ChangedConfig[] = {
 363         { "bind",        "transport",   "",                 "has been moved to <bind:ssl> as of 2.0" },
 364         { "die",         "value",       "",                 "you need to reread your config" },
 365         { "gnutls",      "starttls",    "",                 "has been replaced with m_starttls as of 2.2" },
 366         { "link",        "autoconnect", "",                 "2.0+ does not use this attribute - define <autoconnect> tags instead" },
 367         { "link",        "transport",   "",                 "has been moved to <link:ssl> as of 2.0" },
 368         { "module",      "name",        "m_chanprotect.so", "has been replaced with m_customprefix as of 2.2" },
 369         { "module",      "name",        "m_halfop.so",      "has been replaced with m_customprefix as of 2.2" },
 370         { "options",     "cyclehosts",  "",                 "has been replaced with m_hostcycle as of 2.2" },
 371         { "performance", "nouserdns",   "",                 "has been moved to <connect:resolvehostnames> as of 2.2" }
 372 };
 373
 374 void ServerConfig::Fill()
 375 {
 376         ConfigTag* options = ConfValue("options");
 377         ConfigTag* security = ConfValue("security");
 378         if (sid.empty())
 379         {
 380                 ServerName = ConfValue("server")->getString("name", "irc.example.com");
 381                 ValidHost(ServerName, "<server:name>");
 382
 383                 sid = ConfValue("server")->getString("id");
 384                 if (!sid.empty() && !InspIRCd::IsSID(sid))
 385                         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.");
 386         }
 387         else
 388         {
 389                 if (ServerName != ConfValue("server")->getString("name"))
 390                         throw CoreException("You must restart to change the server name");
 391
 392                 std::string nsid = ConfValue("server")->getString("id");
 393                 if (!nsid.empty() && nsid != sid)
 394                         throw CoreException("You must restart to change the server id");
 395         }
 396         SoftLimit = ConfValue("performance")->getInt("softlimit", (SocketEngine::GetMaxFds() > 0 ? SocketEngine::GetMaxFds() : LONG_MAX), 10);
 397         CCOnConnect = ConfValue("performance")->getBool("clonesonconnect", true);
 398         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 399         XLineMessage = options->getString("xlinemessage", options->getString("moronbanner", "You're banned!"));
 400         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 401         Network = ConfValue("server")->getString("network", "Network");
 402         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240, 1024, 65534);
 403         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 404         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 405         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 406         UserStats = security->getString("userstats");
 407         CustomVersion = security->getString("customversion");
 408         HideSplits = security->getBool("hidesplits");
 409         HideBans = security->getBool("hidebans");
 410         HideWhoisServer = security->getString("hidewhois");
 411         HideKillsServer = security->getString("hidekills");
 412         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 413         GenericOper = security->getBool("genericoper");
 414         SyntaxHints = options->getBool("syntaxhints");
 415         CycleHostsFromUser = options->getBool("cyclehostsfromuser");
 416         FullHostInTopic = options->getBool("hostintopic");
 417         MaxTargets = security->getInt("maxtargets", 20, 1, 31);
 418         DefaultModes = options->getString("defaultmodes", "not");
 419         PID = ConfValue("pid")->getString("file");
 420         MaxChans = ConfValue("channels")->getInt("users", 20);
 421         OperMaxChans = ConfValue("channels")->getInt("opers");
 422         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 423         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 424         Limits = ServerLimits(ConfValue("limits"));
 425         Paths.Config = ConfValue("path")->getString("configdir", INSPIRCD_CONFIG_PATH);
 426         Paths.Data = ConfValue("path")->getString("datadir", INSPIRCD_DATA_PATH);
 427         Paths.Log = ConfValue("path")->getString("logdir", INSPIRCD_LOG_PATH);
 428         Paths.Module = ConfValue("path")->getString("moduledir", INSPIRCD_MODULE_PATH);
 429         NoSnoticeStack = options->getBool("nosnoticestack", false);
 430
 431         if (Network.find(' ') != std::string::npos)
 432                 throw CoreException(Network + " is not a valid network name. A network name must not contain spaces.");
 433
 434         std::string defbind = options->getString("defaultbind");
 435         if (assign(defbind) == "ipv4")
 436         {
 437                 WildcardIPv6 = false;
 438         }
 439         else if (assign(defbind) == "ipv6")
 440         {
 441                 WildcardIPv6 = true;
 442         }
 443         else
 444         {
 445                 WildcardIPv6 = true;
 446                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 447                 if (socktest < 0)
 448                         WildcardIPv6 = false;
 449                 else
 450                         SocketEngine::Close(socktest);
 451         }
 452
 453         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 454         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 455         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 456         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 457
 458         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 459         std::string modes = ConfValue("disabled")->getString("usermodes");
 460         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 461         {
 462                 // Complain when the character is not a-z or A-Z
 463                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 464                         throw CoreException("Invalid usermode " + std::string(1, *p) + " was found.");
 465                 DisabledUModes[*p - 'A'] = 1;
 466         }
 467
 468         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 469         modes = ConfValue("disabled")->getString("chanmodes");
 470         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 471         {
 472                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 473                         throw CoreException("Invalid chanmode " + std::string(1, *p) + " was found.");
 474                 DisabledCModes[*p - 'A'] = 1;
 475         }
 476
 477         std::string v = security->getString("announceinvites");
 478
 479         if (v == "ops")
 480                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 481         else if (v == "all")
 482                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 483         else if (v == "dynamic")
 484                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 485         else
 486                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 487
 488         v = security->getString("operspywhois");
 489         if (v == "splitmsg")
 490                 OperSpyWhois = SPYWHOIS_SPLITMSG;
 491         else if (v == "on" || v == "yes")
 492                 OperSpyWhois = SPYWHOIS_SINGLEMSG;
 493         else
 494                 OperSpyWhois = SPYWHOIS_NONE;
 495 }
 496
 497 // WARNING: it is not safe to use most of the codebase in this function, as it
 498 // will run in the config reader thread
 499 void ServerConfig::Read()
 500 {
 501         /* Load and parse the config file, if there are any errors then explode */
 502
 503         ParseStack stack(this);
 504         try
 505         {
 506                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 507         }
 508         catch (CoreException& err)
 509         {
 510                 valid = false;
 511                 errstr << err.GetReason() << std::endl;
 512         }
 513 }
 514
 515 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 516 {
 517         valid = true;
 518         if (old)
 519         {
 520                 /*
 521                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 522                  */
 523                 this->ServerName = old->ServerName;
 524                 this->sid = old->sid;
 525                 this->cmdline = old->cmdline;
 526         }
 527
 528         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 529         try
 530         {
 531                 for (int index = 0; index * sizeof(DeprecatedConfig) < sizeof(ChangedConfig); index++)
 532                 {
 533                         std::string value;
 534                         ConfigTagList tags = ConfTags(ChangedConfig[index].tag);
 535                         for(ConfigIter i = tags.first; i != tags.second; ++i)
 536                         {
 537                                 if (i->second->readString(ChangedConfig[index].key, value, true)
 538                                         && (ChangedConfig[index].value.empty() || value == ChangedConfig[index].value))
 539                                 {
 540                                         errstr << "Your configuration contains a deprecated value: <"  << ChangedConfig[index].tag;
 541                                         if (ChangedConfig[index].value.empty())
 542                                         {
 543                                                 errstr << ':' << ChangedConfig[index].key;
 544                                         }
 545                                         else
 546                                         {
 547                                                 errstr << ' ' << ChangedConfig[index].key << "=\"" << ChangedConfig[index].value << "\"";
 548                                         }
 549                                         errstr << "> - " << ChangedConfig[index].reason << " (at " << i->second->getTagLocation() << ")" << std::endl;
 550                                 }
 551                         }
 552                 }
 553
 554                 Fill();
 555
 556                 // Handle special items
 557                 CrossCheckOperClassType();
 558                 CrossCheckConnectBlocks(old);
 559         }
 560         catch (CoreException &ce)
 561         {
 562                 errstr << ce.GetReason();
 563         }
 564
 565         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 566         valid = errstr.str().empty();
 567
 568         // write once here, to try it out and make sure its ok
 569         if (valid)
 570                 ServerInstance->WritePID(this->PID);
 571
 572         ConfigTagList binds = ConfTags("bind");
 573         if (binds.first == binds.second)
 574                  errstr << "Possible configuration error: you have not defined any <bind> blocks." << std::endl
 575                          << "You will need to do this if you want clients to be able to connect!" << std::endl;
 576
 577         if (old && valid)
 578         {
 579                 // On first run, ports are bound later on
 580                 FailedPortList pl;
 581                 ServerInstance->BindPorts(pl);
 582                 if (pl.size())
 583                 {
 584                         errstr << "Not all your client ports could be bound." << std::endl
 585                                 << "The following port(s) failed to bind:" << std::endl;
 586
 587                         int j = 1;
 588                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 589                         {
 590                                 errstr << j << ".\tAddress: " << (i->first.empty() ? "<all>" : i->first.c_str()) << "\tReason: "
 591                                         << i->second << std::endl;
 592                         }
 593                 }
 594         }
 595
 596         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 597
 598         if (!valid)
 599         {
 600                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "There were errors in your configuration file:");
 601                 Classes.clear();
 602         }
 603
 604         while (errstr.good())
 605         {
 606                 std::string line;
 607                 getline(errstr, line, '\n');
 608                 if (line.empty())
 609                         continue;
 610                 // On startup, print out to console (still attached at this point)
 611                 if (!old)
 612                         std::cout << line << std::endl;
 613                 // If a user is rehashing, tell them directly
 614                 if (user)
 615                         user->SendText(":%s NOTICE %s :*** %s", ServerInstance->Config->ServerName.c_str(), user->nick.c_str(), line.c_str());
 616                 // Also tell opers
 617                 ServerInstance->SNO->WriteGlobalSno('a', line);
 618         }
 619
 620         errstr.clear();
 621         errstr.str(std::string());
 622
 623         // Re-parse our MOTD and RULES files for colors -- Justasic
 624         for (ClassVector::const_iterator it = this->Classes.begin(), it_end = this->Classes.end(); it != it_end; ++it)
 625         {
 626                 ConfigTag *tag = (*it)->config;
 627                 // Make sure our connection class allows motd colors
 628                 if(!tag->getBool("allowmotdcolors"))
 629                         continue;
 630
 631                 ConfigFileCache::iterator file = this->Files.find(tag->getString("motd", "motd"));
 632                 if (file != this->Files.end())
 633                         InspIRCd::ProcessColors(file->second);
 634         }
 635
 636         /* No old configuration -> initial boot, nothing more to do here */
 637         if (!old)
 638         {
 639                 if (!valid)
 640                 {
 641                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 642                 }
 643
 644                 return;
 645         }
 646
 647
 648         // If there were errors processing configuration, don't touch modules.
 649         if (!valid)
 650                 return;
 651
 652         ApplyModules(user);
 653
 654         if (user)
 655                 user->SendText(":%s NOTICE %s :*** Successfully rehashed server.",
 656                         ServerInstance->Config->ServerName.c_str(), user->nick.c_str());
 657         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 658 }
 659
 660 void ServerConfig::ApplyModules(User* user)
 661 {
 662         std::vector<std::string> added_modules;
 663         ModuleManager::ModuleMap removed_modules = ServerInstance->Modules->GetModules();
 664
 665         ConfigTagList tags = ConfTags("module");
 666         for(ConfigIter i = tags.first; i != tags.second; ++i)
 667         {
 668                 ConfigTag* tag = i->second;
 669                 std::string name;
 670                 if (tag->readString("name", name))
 671                 {
 672                         name = ModuleManager::ExpandModName(name);
 673                         // if this module is already loaded, the erase will succeed, so we need do nothing
 674                         // otherwise, we need to add the module (which will be done later)
 675                         if (removed_modules.erase(name) == 0)
 676                                 added_modules.push_back(name);
 677                 }
 678         }
 679
 680         for (ModuleManager::ModuleMap::iterator i = removed_modules.begin(); i != removed_modules.end(); ++i)
 681         {
 682                 const std::string& modname = i->first;
 683                 // Don't remove core_*.so, just remove m_*.so
 684                 if (modname.c_str()[0] == 'c')
 685                         continue;
 686                 if (ServerInstance->Modules->Unload(i->second))
 687                 {
 688                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s", modname.c_str());
 689
 690                         if (user)
 691                                 user->WriteNumeric(RPL_UNLOADEDMODULE, modname, InspIRCd::Format("Module %s successfully unloaded.", modname.c_str()));
 692                         else
 693                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", modname.c_str());
 694                 }
 695                 else
 696                 {
 697                         if (user)
 698                                 user->WriteNumeric(ERR_CANTUNLOADMODULE, modname, InspIRCd::Format("Failed to unload module %s: %s", modname.c_str(), ServerInstance->Modules->LastError().c_str()));
 699                         else
 700                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", modname.c_str(), ServerInstance->Modules->LastError().c_str());
 701                 }
 702         }
 703
 704         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 705         {
 706                 if (ServerInstance->Modules->Load(*adding))
 707                 {
 708                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 709                         if (user)
 710                                 user->WriteNumeric(RPL_LOADEDMODULE, *adding, InspIRCd::Format("Module %s successfully loaded.", adding->c_str()));
 711                         else
 712                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 713                 }
 714                 else
 715                 {
 716                         if (user)
 717                                 user->WriteNumeric(ERR_CANTLOADMODULE, *adding, InspIRCd::Format("Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str()));
 718                         else
 719                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 720                 }
 721         }
 722 }
 723
 724 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 725 {
 726         ConfigTagList found = config_data.equal_range(tag);
 727         if (found.first == found.second)
 728                 return EmptyTag;
 729         ConfigTag* rv = found.first->second;
 730         found.first++;
 731         if (found.first != found.second)
 732                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 733                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 734         return rv;
 735 }
 736
 737 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 738 {
 739         return config_data.equal_range(tag);
 740 }
 741
 742 std::string ServerConfig::Escape(const std::string& str, bool xml)
 743 {
 744         std::string escaped;
 745         for (std::string::const_iterator it = str.begin(); it != str.end(); ++it)
 746         {
 747                 switch (*it)
 748                 {
 749                         case '"':
 750                                 escaped += xml ? "&quot;" : "\"";
 751                                 break;
 752                         case '&':
 753                                 escaped += xml ? "&amp;" : "&";
 754                                 break;
 755                         case '\\':
 756                                 escaped += xml ? "\\" : "\\\\";
 757                                 break;
 758                         default:
 759                                 escaped += *it;
 760                                 break;
 761                 }
 762         }
 763         return escaped;
 764 }
 765
 766 void ConfigReaderThread::Run()
 767 {
 768         Config->Read();
 769         done = true;
 770 }
 771
 772 void ConfigReaderThread::Finish()
 773 {
 774         ServerConfig* old = ServerInstance->Config;
 775         ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "Switching to new configuration...");
 776         ServerInstance->Config = this->Config;
 777         Config->Apply(old, TheUserUID);
 778
 779         if (Config->valid)
 780         {
 781                 /*
 782                  * Apply the changed configuration from the rehash.
 783                  *
 784                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 785                  * thoroughly!!!
 786                  */
 787                 ServerInstance->Users.RehashCloneCounts();
 788                 ServerInstance->XLines->CheckELines();
 789                 ServerInstance->XLines->ApplyLines();
 790                 ChanModeReference ban(NULL, "ban");
 791                 static_cast<ListModeBase*>(*ban)->DoRehash();
 792                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 793                 User* user = ServerInstance->FindNick(TheUserUID);
 794
 795                 ConfigStatus status(user);
 796                 const ModuleManager::ModuleMap& mods = ServerInstance->Modules->GetModules();
 797                 for (ModuleManager::ModuleMap::const_iterator i = mods.begin(); i != mods.end(); ++i)
 798                         i->second->ReadConfig(status);
 799
 800                 // The description of this server may have changed - update it for WHOIS etc.
 801                 ServerInstance->FakeClient->server->description = Config->ServerDesc;
 802
 803                 ServerInstance->ISupport.Build();
 804
 805                 ServerInstance->Logs->CloseLogs();
 806                 ServerInstance->Logs->OpenFileLogs();
 807
 808                 if (Config->RawLog && !old->RawLog)
 809                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 810
 811                 Config = old;
 812         }
 813         else
 814         {
 815                 // whoops, abort!
 816                 ServerInstance->Config = old;
 817         }
 818 }