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