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 <fstream>
  27 #include "xline.h"
  28 #include "exitcodes.h"
  29 #include "commands/cmd_whowas.h"
  30 #include "configparser.h"
  31 #include <iostream>
  32 #ifdef _WIN32
  33 #include <Iphlpapi.h>
  34 #pragma comment(lib, "Iphlpapi.lib")
  35 #endif
  36
  37 ServerConfig::ServerConfig()
  38 {
  39         WhoWasGroupSize = WhoWasMaxGroups = WhoWasMaxKeep = 0;
  40         RawLog = NoUserDns = HideBans = HideSplits = UndernetMsgPrefix = false;
  41         WildcardIPv6 = CycleHosts = InvBypassModes = true;
  42         dns_timeout = 5;
  43         MaxTargets = 20;
  44         NetBufferSize = 10240;
  45         SoftLimit = ServerInstance->SE->GetMaxFds();
  46         MaxConn = SOMAXCONN;
  47         MaxChans = 20;
  48         OperMaxChans = 30;
  49         c_ipv4_range = 32;
  50         c_ipv6_range = 128;
  51 }
  52
  53 void ServerConfig::Update005()
  54 {
  55         std::stringstream out(data005);
  56         std::vector<std::string> data;
  57         std::string token;
  58         while (out >> token)
  59                 data.push_back(token);
  60         sort(data.begin(), data.end());
  61
  62         std::string line5;
  63         isupport.clear();
  64         for(unsigned int i=0; i < data.size(); i++)
  65         {
  66                 token = data[i];
  67                 line5 = line5 + token + " ";
  68                 if (i % 13 == 12)
  69                 {
  70                         line5.append(":are supported by this server");
  71                         isupport.push_back(line5);
  72                         line5.clear();
  73                 }
  74         }
  75         if (!line5.empty())
  76         {
  77                 line5.append(":are supported by this server");
  78                 isupport.push_back(line5);
  79         }
  80 }
  81
  82 void ServerConfig::Send005(User* user)
  83 {
  84         for (std::vector<std::string>::iterator line = ServerInstance->Config->isupport.begin(); line != ServerInstance->Config->isupport.end(); line++)
  85                 user->WriteNumeric(RPL_ISUPPORT, "%s %s", user->nick.c_str(), line->c_str());
  86 }
  87
  88 template<typename T, typename V>
  89 static void range(T& value, V min, V max, V def, const char* msg)
  90 {
  91         if (value >= (T)min && value <= (T)max)
  92                 return;
  93         ServerInstance->Logs->Log("CONFIG", DEFAULT,
  94                 "WARNING: %s value of %ld is not between %ld and %ld; set to %ld.",
  95                 msg, (long)value, (long)min, (long)max, (long)def);
  96         value = def;
  97 }
  98
  99
 100 static void ValidIP(const std::string& ip, const std::string& key)
 101 {
 102         irc::sockets::sockaddrs dummy;
 103         if (!irc::sockets::aptosa(ip, 0, dummy))
 104                 throw CoreException("The value of "+key+" is not an IP address");
 105 }
 106
 107 static void ValidHost(const std::string& p, const std::string& msg)
 108 {
 109         int num_dots = 0;
 110         if (p.empty() || p[0] == '.')
 111                 throw CoreException("The value of "+msg+" is not a valid hostname");
 112         for (unsigned int i=0;i < p.length();i++)
 113         {
 114                 switch (p[i])
 115                 {
 116                         case ' ':
 117                                 throw CoreException("The value of "+msg+" is not a valid hostname");
 118                         case '.':
 119                                 num_dots++;
 120                         break;
 121                 }
 122         }
 123         if (num_dots == 0)
 124                 throw CoreException("The value of "+msg+" is not a valid hostname");
 125 }
 126
 127 bool ServerConfig::ApplyDisabledCommands(const std::string& data)
 128 {
 129         std::stringstream dcmds(data);
 130         std::string thiscmd;
 131
 132         /* Enable everything first */
 133         for (Commandtable::iterator x = ServerInstance->Parser->cmdlist.begin(); x != ServerInstance->Parser->cmdlist.end(); x++)
 134                 x->second->Disable(false);
 135
 136         /* Now disable all the ones which the user wants disabled */
 137         while (dcmds >> thiscmd)
 138         {
 139                 Commandtable::iterator cm = ServerInstance->Parser->cmdlist.find(thiscmd);
 140                 if (cm != ServerInstance->Parser->cmdlist.end())
 141                 {
 142                         cm->second->Disable(true);
 143                 }
 144         }
 145         return true;
 146 }
 147
 148 static void FindDNS(std::string& server)
 149 {
 150         if (!server.empty())
 151                 return;
 152 #ifdef _WIN32
 153         // attempt to look up their nameserver from the system
 154         ServerInstance->Logs->Log("CONFIG",DEFAULT,"WARNING: <dns:server> not defined, attempting to find a working server in the system settings...");
 155
 156         PFIXED_INFO pFixedInfo;
 157         DWORD dwBufferSize = sizeof(FIXED_INFO);
 158         pFixedInfo = (PFIXED_INFO) HeapAlloc(GetProcessHeap(), 0, sizeof(FIXED_INFO));
 159
 160         if(pFixedInfo)
 161         {
 162                 if (GetNetworkParams(pFixedInfo, &dwBufferSize) == ERROR_BUFFER_OVERFLOW) {
 163                         HeapFree(GetProcessHeap(), 0, pFixedInfo);
 164                         pFixedInfo = (PFIXED_INFO) HeapAlloc(GetProcessHeap(), 0, dwBufferSize);
 165                 }
 166
 167                 if(pFixedInfo) {
 168                         if (GetNetworkParams(pFixedInfo, &dwBufferSize) == NO_ERROR)
 169                                 server = pFixedInfo->DnsServerList.IpAddress.String;
 170
 171                         HeapFree(GetProcessHeap(), 0, pFixedInfo);
 172                 }
 173
 174                 if(!server.empty())
 175                 {
 176                         ServerInstance->Logs->Log("CONFIG",DEFAULT,"<dns:server> set to '%s' as first active resolver in the system settings.", server.c_str());
 177                         return;
 178                 }
 179         }
 180
 181         ServerInstance->Logs->Log("CONFIG",DEFAULT,"No viable nameserver found! Defaulting to nameserver '127.0.0.1'!");
 182 #else
 183         // attempt to look up their nameserver from /etc/resolv.conf
 184         ServerInstance->Logs->Log("CONFIG",DEFAULT,"WARNING: <dns:server> not defined, attempting to find working server in /etc/resolv.conf...");
 185
 186         std::ifstream resolv("/etc/resolv.conf");
 187
 188         while (resolv >> server)
 189         {
 190                 if (server == "nameserver")
 191                 {
 192                         resolv >> server;
 193                         if (server.find_first_not_of("0123456789.") == std::string::npos)
 194                         {
 195                                 ServerInstance->Logs->Log("CONFIG",DEFAULT,"<dns:server> set to '%s' as first resolver in /etc/resolv.conf.",server.c_str());
 196                                 return;
 197                         }
 198                 }
 199         }
 200
 201         ServerInstance->Logs->Log("CONFIG",DEFAULT,"/etc/resolv.conf contains no viable nameserver entries! Defaulting to nameserver '127.0.0.1'!");
 202 #endif
 203         server = "127.0.0.1";
 204 }
 205
 206 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
 207 {
 208         ConfigTagList tags = conf->ConfTags(tag);
 209         for(ConfigIter i = tags.first; i != tags.second; ++i)
 210         {
 211                 ConfigTag* ctag = i->second;
 212                 std::string mask;
 213                 if (!ctag->readString(key, mask))
 214                         throw CoreException("<"+tag+":"+key+"> missing at " + ctag->getTagLocation());
 215                 std::string reason = ctag->getString("reason", "<Config>");
 216                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
 217                 if (!ServerInstance->XLines->AddLine(xl, NULL))
 218                         delete xl;
 219         }
 220 }
 221
 222 typedef std::map<std::string, ConfigTag*> LocalIndex;
 223 void ServerConfig::CrossCheckOperClassType()
 224 {
 225         LocalIndex operclass;
 226         ConfigTagList tags = ConfTags("class");
 227         for(ConfigIter i = tags.first; i != tags.second; ++i)
 228         {
 229                 ConfigTag* tag = i->second;
 230                 std::string name = tag->getString("name");
 231                 if (name.empty())
 232                         throw CoreException("<class:name> missing from tag at " + tag->getTagLocation());
 233                 if (operclass.find(name) != operclass.end())
 234                         throw CoreException("Duplicate class block with name " + name + " at " + tag->getTagLocation());
 235                 operclass[name] = tag;
 236         }
 237         tags = ConfTags("type");
 238         for(ConfigIter i = tags.first; i != tags.second; ++i)
 239         {
 240                 ConfigTag* tag = i->second;
 241                 std::string name = tag->getString("name");
 242                 if (name.empty())
 243                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
 244                 if (!ServerInstance->IsNick(name.c_str(), Limits.NickMax))
 245                         throw CoreException("<type:name> is invalid (value '" + name + "')");
 246                 if (oper_blocks.find(" " + name) != oper_blocks.end())
 247                         throw CoreException("Duplicate type block with name " + name + " at " + tag->getTagLocation());
 248
 249                 OperInfo* ifo = new OperInfo;
 250                 oper_blocks[" " + name] = ifo;
 251                 ifo->name = name;
 252                 ifo->type_block = tag;
 253
 254                 std::string classname;
 255                 irc::spacesepstream str(tag->getString("classes"));
 256                 while (str.GetToken(classname))
 257                 {
 258                         LocalIndex::iterator cls = operclass.find(classname);
 259                         if (cls == operclass.end())
 260                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 261                         ifo->class_blocks.push_back(cls->second);
 262                 }
 263         }
 264
 265         tags = ConfTags("oper");
 266         for(ConfigIter i = tags.first; i != tags.second; ++i)
 267         {
 268                 ConfigTag* tag = i->second;
 269
 270                 std::string name = tag->getString("name");
 271                 if (name.empty())
 272                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 273
 274                 std::string type = tag->getString("type");
 275                 OperIndex::iterator tblk = oper_blocks.find(" " + type);
 276                 if (tblk == oper_blocks.end())
 277                         throw CoreException("Oper block " + name + " has missing type " + type);
 278                 if (oper_blocks.find(name) != oper_blocks.end())
 279                         throw CoreException("Duplicate oper block with name " + name + " at " + tag->getTagLocation());
 280
 281                 OperInfo* ifo = new OperInfo;
 282                 ifo->name = type;
 283                 ifo->oper_block = tag;
 284                 ifo->type_block = tblk->second->type_block;
 285                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 286                 oper_blocks[name] = ifo;
 287         }
 288 }
 289
 290 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 291 {
 292         typedef std::map<std::string, ConnectClass*> ClassMap;
 293         ClassMap oldBlocksByMask;
 294         if (current)
 295         {
 296                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 297                 {
 298                         ConnectClass* c = *i;
 299                         if (c->name.substr(0, 8) != "unnamed-")
 300                         {
 301                                 oldBlocksByMask["n" + c->name] = c;
 302                         }
 303                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 304                         {
 305                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 306                                 typeMask += c->host;
 307                                 oldBlocksByMask[typeMask] = c;
 308                         }
 309                 }
 310         }
 311
 312         int blk_count = config_data.count("connect");
 313         if (blk_count == 0)
 314         {
 315                 // No connect blocks found; make a trivial default block
 316                 std::vector<KeyVal>* items;
 317                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 318                 items->push_back(std::make_pair("allow", "*"));
 319                 config_data.insert(std::make_pair("connect", tag));
 320                 blk_count = 1;
 321         }
 322
 323         Classes.resize(blk_count);
 324         std::map<std::string, int> names;
 325
 326         bool try_again = true;
 327         for(int tries=0; try_again; tries++)
 328         {
 329                 try_again = false;
 330                 ConfigTagList tags = ConfTags("connect");
 331                 int i=0;
 332                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 333                 {
 334                         ConfigTag* tag = it->second;
 335                         if (Classes[i])
 336                                 continue;
 337
 338                         ConnectClass* parent = NULL;
 339                         std::string parentName = tag->getString("parent");
 340                         if (!parentName.empty())
 341                         {
 342                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 343                                 if (parentIter == names.end())
 344                                 {
 345                                         try_again = true;
 346                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 347                                         if (tries >= blk_count)
 348                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 349                                         continue;
 350                                 }
 351                                 parent = Classes[parentIter->second];
 352                         }
 353
 354                         std::string name = tag->getString("name");
 355                         std::string mask, typeMask;
 356                         char type;
 357
 358                         if (tag->readString("allow", mask, false))
 359                         {
 360                                 type = CC_ALLOW;
 361                                 typeMask = 'a' + mask;
 362                         }
 363                         else if (tag->readString("deny", mask, false))
 364                         {
 365                                 type = CC_DENY;
 366                                 typeMask = 'd' + mask;
 367                         }
 368                         else if (!name.empty())
 369                         {
 370                                 type = CC_NAMED;
 371                                 mask = name;
 372                                 typeMask = 'n' + mask;
 373                         }
 374                         else
 375                         {
 376                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 377                         }
 378
 379                         if (name.empty())
 380                         {
 381                                 name = "unnamed-" + ConvToStr(i);
 382                         }
 383                         else
 384                         {
 385                                 typeMask = 'n' + name;
 386                         }
 387
 388                         if (names.find(name) != names.end())
 389                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 390                         names[name] = i;
 391
 392                         ConnectClass* me = parent ?
 393                                 new ConnectClass(tag, type, mask, *parent) :
 394                                 new ConnectClass(tag, type, mask);
 395
 396                         me->name = name;
 397
 398                         me->registration_timeout = tag->getInt("timeout", me->registration_timeout);
 399                         me->pingtime = tag->getInt("pingfreq", me->pingtime);
 400                         std::string sendq;
 401                         if (tag->readString("sendq", sendq))
 402                         {
 403                                 // attempt to guess a good hard/soft sendq from a single value
 404                                 long value = atol(sendq.c_str());
 405                                 if (value > 16384)
 406                                         me->softsendqmax = value / 16;
 407                                 else
 408                                         me->softsendqmax = value;
 409                                 me->hardsendqmax = value * 8;
 410                         }
 411                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 412                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 413                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 414                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 415                         me->commandrate = tag->getInt("commandrate", me->commandrate);
 416                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 417                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 418                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 419                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 420                         me->maxconnwarn = tag->getBool("maxconnwarn", me->maxconnwarn);
 421                         me->limit = tag->getInt("limit", me->limit);
 422
 423                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 424                         if (oldMask != oldBlocksByMask.end())
 425                         {
 426                                 ConnectClass* old = oldMask->second;
 427                                 oldBlocksByMask.erase(oldMask);
 428                                 old->Update(me);
 429                                 delete me;
 430                                 me = old;
 431                         }
 432                         Classes[i] = me;
 433                 }
 434         }
 435 }
 436
 437 /** Represents a deprecated configuration tag.
 438  */
 439 struct Deprecated
 440 {
 441         /** Tag name
 442          */
 443         const char* tag;
 444         /** Tag value
 445          */
 446         const char* value;
 447         /** Reason for deprecation
 448          */
 449         const char* reason;
 450 };
 451
 452 static const Deprecated ChangedConfig[] = {
 453         {"options", "hidelinks",                "has been moved to <security:hidelinks> as of 1.2a3"},
 454         {"options", "hidewhois",                "has been moved to <security:hidewhois> as of 1.2a3"},
 455         {"options", "userstats",                "has been moved to <security:userstats> as of 1.2a3"},
 456         {"options", "customversion",    "has been moved to <security:customversion> as of 1.2a3"},
 457         {"options", "hidesplits",               "has been moved to <security:hidesplits> as of 1.2a3"},
 458         {"options", "hidebans",         "has been moved to <security:hidebans> as of 1.2a3"},
 459         {"options", "hidekills",                "has been moved to <security:hidekills> as of 1.2a3"},
 460         {"options", "operspywhois",             "has been moved to <security:operspywhois> as of 1.2a3"},
 461         {"options", "announceinvites",  "has been moved to <security:announceinvites> as of 1.2a3"},
 462         {"options", "hidemodes",                "has been moved to <security:hidemodes> as of 1.2a3"},
 463         {"options", "maxtargets",               "has been moved to <security:maxtargets> as of 1.2a3"},
 464         {"options",     "nouserdns",            "has been moved to <performance:nouserdns> as of 1.2a3"},
 465         {"options",     "maxwho",               "has been moved to <performance:maxwho> as of 1.2a3"},
 466         {"options",     "softlimit",            "has been moved to <performance:softlimit> as of 1.2a3"},
 467         {"options", "somaxconn",                "has been moved to <performance:somaxconn> as of 1.2a3"},
 468         {"options", "netbuffersize",    "has been moved to <performance:netbuffersize> as of 1.2a3"},
 469         {"options", "maxwho",           "has been moved to <performance:maxwho> as of 1.2a3"},
 470         {"options",     "loglevel",             "1.2+ does not use the loglevel value. Please define <log> tags instead."},
 471         {"die",     "value",            "you need to reread your config"},
 472         {"bind",    "transport",                "has been moved to <bind:ssl> as of 2.0a1"},
 473         {"link",    "transport",                "has been moved to <link:ssl> as of 2.0a1"},
 474
 475 };
 476
 477 void ServerConfig::Fill()
 478 {
 479         ConfigTag* options = ConfValue("options");
 480         ConfigTag* security = ConfValue("security");
 481         if (sid.empty())
 482         {
 483                 ServerName = ConfValue("server")->getString("name");
 484                 sid = ConfValue("server")->getString("id");
 485                 ValidHost(ServerName, "<server:name>");
 486                 if (!sid.empty() && !ServerInstance->IsSID(sid))
 487                         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.");
 488         }
 489         else
 490         {
 491                 if (ServerName != ConfValue("server")->getString("name"))
 492                         throw CoreException("You must restart to change the server name or SID");
 493                 std::string nsid = ConfValue("server")->getString("id");
 494                 if (!nsid.empty() && nsid != sid)
 495                         throw CoreException("You must restart to change the server name or SID");
 496         }
 497         diepass = ConfValue("power")->getString("diepass");
 498         restartpass = ConfValue("power")->getString("restartpass");
 499         powerhash = ConfValue("power")->getString("hash");
 500         PrefixQuit = options->getString("prefixquit");
 501         SuffixQuit = options->getString("suffixquit");
 502         FixedQuit = options->getString("fixedquit");
 503         PrefixPart = options->getString("prefixpart");
 504         SuffixPart = options->getString("suffixpart");
 505         FixedPart = options->getString("fixedpart");
 506         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 507         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 508         MoronBanner = options->getString("moronbanner", "You're banned!");
 509         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 510         Network = ConfValue("server")->getString("network", "Network");
 511         AdminName = ConfValue("admin")->getString("name", "");
 512         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 513         AdminNick = ConfValue("admin")->getString("nick", "admin");
 514         ModPath = ConfValue("path")->getString("moduledir", MOD_PATH);
 515         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 516         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 517         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 518         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 519         UserStats = security->getString("userstats");
 520         CustomVersion = security->getString("customversion", Network + " IRCd");
 521         HideSplits = security->getBool("hidesplits");
 522         HideBans = security->getBool("hidebans");
 523         HideWhoisServer = security->getString("hidewhois");
 524         HideKillsServer = security->getString("hidekills");
 525         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 526         GenericOper = security->getBool("genericoper");
 527         NoUserDns = ConfValue("performance")->getBool("nouserdns");
 528         SyntaxHints = options->getBool("syntaxhints");
 529         CycleHosts = options->getBool("cyclehosts");
 530         CycleHostsFromUser = options->getBool("cyclehostsfromuser");
 531         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 532         FullHostInTopic = options->getBool("hostintopic");
 533         MaxTargets = security->getInt("maxtargets", 20);
 534         DefaultModes = options->getString("defaultmodes", "nt");
 535         PID = ConfValue("pid")->getString("file");
 536         WhoWasGroupSize = ConfValue("whowas")->getInt("groupsize");
 537         WhoWasMaxGroups = ConfValue("whowas")->getInt("maxgroups");
 538         WhoWasMaxKeep = ServerInstance->Duration(ConfValue("whowas")->getString("maxkeep"));
 539         MaxChans = ConfValue("channels")->getInt("users", 20);
 540         OperMaxChans = ConfValue("channels")->getInt("opers", 60);
 541         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 542         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 543         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 544         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 545         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 546         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 547         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 548         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 549         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 550         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 551         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 552         InvBypassModes = options->getBool("invitebypassmodes", true);
 553         NoSnoticeStack = options->getBool("nosnoticestack", false);
 554         WelcomeNotice = options->getBool("welcomenotice", true);
 555
 556         range(SoftLimit, 10, ServerInstance->SE->GetMaxFds(), ServerInstance->SE->GetMaxFds(), "<performance:softlimit>");
 557         range(MaxConn, 0, SOMAXCONN, SOMAXCONN, "<performance:somaxconn>");
 558         range(MaxTargets, 1, 31, 20, "<security:maxtargets>");
 559         range(NetBufferSize, 1024, 65534, 10240, "<performance:netbuffersize>");
 560         range(WhoWasGroupSize, 0, 10000, 10, "<whowas:groupsize>");
 561         range(WhoWasMaxGroups, 0, 1000000, 10240, "<whowas:maxgroups>");
 562         range(WhoWasMaxKeep, 3600, INT_MAX, 3600, "<whowas:maxkeep>");
 563
 564         ValidIP(DNSServer, "<dns:server>");
 565
 566         std::string defbind = options->getString("defaultbind");
 567         if (assign(defbind) == "ipv4")
 568         {
 569                 WildcardIPv6 = false;
 570         }
 571         else if (assign(defbind) == "ipv6")
 572         {
 573                 WildcardIPv6 = true;
 574         }
 575         else
 576         {
 577                 WildcardIPv6 = true;
 578                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 579                 if (socktest < 0)
 580                         WildcardIPv6 = false;
 581                 else
 582                         ServerInstance->SE->Close(socktest);
 583         }
 584         ConfigTagList tags = ConfTags("uline");
 585         for(ConfigIter i = tags.first; i != tags.second; ++i)
 586         {
 587                 ConfigTag* tag = i->second;
 588                 std::string server;
 589                 if (!tag->readString("server", server))
 590                         throw CoreException("<uline> tag missing server at " + tag->getTagLocation());
 591                 ulines[assign(server)] = tag->getBool("silent");
 592         }
 593
 594         tags = ConfTags("banlist");
 595         for(ConfigIter i = tags.first; i != tags.second; ++i)
 596         {
 597                 ConfigTag* tag = i->second;
 598                 std::string chan;
 599                 if (!tag->readString("chan", chan))
 600                         throw CoreException("<banlist> tag missing chan at " + tag->getTagLocation());
 601                 maxbans[chan] = tag->getInt("limit");
 602         }
 603
 604         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 605         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 606         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 607         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 608
 609         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 610         std::string modes = ConfValue("disabled")->getString("usermodes");
 611         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 612         {
 613                 // Complain when the character is not a-z or A-Z
 614                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 615                         throw CoreException("Invalid usermode " + std::string(1, *p) + " was found.");
 616                 DisabledUModes[*p - 'A'] = 1;
 617         }
 618
 619         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 620         modes = ConfValue("disabled")->getString("chanmodes");
 621         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 622         {
 623                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 624                         throw CoreException("Invalid chanmode " + std::string(1, *p) + " was found.");
 625                 DisabledCModes[*p - 'A'] = 1;
 626         }
 627
 628         memset(HideModeLists, 0, sizeof(HideModeLists));
 629         modes = ConfValue("security")->getString("hidemodes");
 630         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 631                 HideModeLists[(unsigned char) *p] = true;
 632
 633         std::string v = security->getString("announceinvites");
 634
 635         if (v == "ops")
 636                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 637         else if (v == "all")
 638                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 639         else if (v == "dynamic")
 640                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 641         else
 642                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 643
 644         v = security->getString("operspywhois");
 645         if (v == "splitmsg")
 646                 OperSpyWhois = SPYWHOIS_SPLITMSG;
 647         else if (v == "on" || v == "yes")
 648                 OperSpyWhois = SPYWHOIS_SINGLEMSG;
 649         else
 650                 OperSpyWhois = SPYWHOIS_NONE;
 651
 652         Limits.Finalise();
 653 }
 654
 655 // WARNING: it is not safe to use most of the codebase in this function, as it
 656 // will run in the config reader thread
 657 void ServerConfig::Read()
 658 {
 659         /* Load and parse the config file, if there are any errors then explode */
 660
 661         ParseStack stack(this);
 662         try
 663         {
 664                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 665         }
 666         catch (CoreException& err)
 667         {
 668                 valid = false;
 669                 errstr << err.GetReason();
 670         }
 671         if (valid)
 672         {
 673                 DNSServer = ConfValue("dns")->getString("server");
 674                 FindDNS(DNSServer);
 675         }
 676 }
 677
 678 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 679 {
 680         valid = true;
 681         if (old)
 682         {
 683                 /*
 684                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 685                  */
 686                 this->ServerName = old->ServerName;
 687                 this->sid = old->sid;
 688                 this->cmdline = old->cmdline;
 689         }
 690
 691         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 692         try
 693         {
 694                 for (int Index = 0; Index * sizeof(Deprecated) < sizeof(ChangedConfig); Index++)
 695                 {
 696                         std::string dummy;
 697                         ConfigTagList tags = ConfTags(ChangedConfig[Index].tag);
 698                         for(ConfigIter i = tags.first; i != tags.second; ++i)
 699                         {
 700                                 if (i->second->readString(ChangedConfig[Index].value, dummy, true))
 701                                         errstr << "Your configuration contains a deprecated value: <"
 702                                                 << ChangedConfig[Index].tag << ":" << ChangedConfig[Index].value << "> - " << ChangedConfig[Index].reason
 703                                                 << " (at " << i->second->getTagLocation() << ")\n";
 704                         }
 705                 }
 706
 707                 Fill();
 708
 709                 // Handle special items
 710                 CrossCheckOperClassType();
 711                 CrossCheckConnectBlocks(old);
 712         }
 713         catch (CoreException &ce)
 714         {
 715                 errstr << ce.GetReason();
 716         }
 717
 718         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 719         valid = errstr.str().empty();
 720
 721         // write once here, to try it out and make sure its ok
 722         if (valid)
 723                 ServerInstance->WritePID(this->PID);
 724
 725         if (old)
 726         {
 727                 // On first run, ports are bound later on
 728                 FailedPortList pl;
 729                 ServerInstance->BindPorts(pl);
 730                 if (pl.size())
 731                 {
 732                         errstr << "Not all your client ports could be bound.\nThe following port(s) failed to bind:\n";
 733
 734                         int j = 1;
 735                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 736                         {
 737                                 char buf[MAXBUF];
 738                                 snprintf(buf, MAXBUF, "%d.   Address: %s   Reason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 739                                 errstr << buf;
 740                         }
 741                 }
 742         }
 743
 744         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 745
 746         if (!valid)
 747                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "There were errors in your configuration file:");
 748
 749         while (errstr.good())
 750         {
 751                 std::string line;
 752                 getline(errstr, line, '\n');
 753                 if (line.empty())
 754                         continue;
 755                 // On startup, print out to console (still attached at this point)
 756                 if (!old)
 757                         std::cout << line << std::endl;
 758                 // If a user is rehashing, tell them directly
 759                 if (user)
 760                         user->SendText(":%s NOTICE %s :*** %s", ServerInstance->Config->ServerName.c_str(), user->nick.c_str(), line.c_str());
 761                 // Also tell opers
 762                 ServerInstance->SNO->WriteGlobalSno('a', line);
 763         }
 764
 765         errstr.clear();
 766         errstr.str(std::string());
 767
 768         // Re-parse our MOTD and RULES files for colors -- Justasic
 769         for (ClassVector::const_iterator it = this->Classes.begin(), it_end = this->Classes.end(); it != it_end; ++it)
 770         {
 771                 ConfigTag *tag = (*it)->config;
 772                 // Make sure our connection class allows motd colors
 773                 if(!tag->getBool("allowmotdcolors"))
 774                       continue;
 775
 776                 ConfigFileCache::iterator file = this->Files.find(tag->getString("motd", "motd"));
 777                 if (file != this->Files.end())
 778                       InspIRCd::ProcessColors(file->second);
 779
 780                 file = this->Files.find(tag->getString("rules", "rules"));
 781                 if (file != this->Files.end())
 782                       InspIRCd::ProcessColors(file->second);
 783         }
 784
 785         /* No old configuration -> initial boot, nothing more to do here */
 786         if (!old)
 787         {
 788                 if (!valid)
 789                 {
 790                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 791                 }
 792
 793                 return;
 794         }
 795
 796
 797         // If there were errors processing configuration, don't touch modules.
 798         if (!valid)
 799                 return;
 800
 801         ApplyModules(user);
 802
 803         if (user)
 804                 user->SendText(":%s NOTICE %s :*** Successfully rehashed server.",
 805                         ServerInstance->Config->ServerName.c_str(), user->nick.c_str());
 806         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 807 }
 808
 809 void ServerConfig::ApplyModules(User* user)
 810 {
 811         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
 812         if (whowas)
 813                 WhowasRequest(NULL, whowas, WhowasRequest::WHOWAS_PRUNE).Send();
 814
 815         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
 816         std::vector<std::string> added_modules;
 817         std::set<std::string> removed_modules(v.begin(), v.end());
 818
 819         ConfigTagList tags = ConfTags("module");
 820         for(ConfigIter i = tags.first; i != tags.second; ++i)
 821         {
 822                 ConfigTag* tag = i->second;
 823                 std::string name;
 824                 if (tag->readString("name", name))
 825                 {
 826                         // if this module is already loaded, the erase will succeed, so we need do nothing
 827                         // otherwise, we need to add the module (which will be done later)
 828                         if (removed_modules.erase(name) == 0)
 829                                 added_modules.push_back(name);
 830                 }
 831         }
 832
 833         if (ConfValue("options")->getBool("allowhalfop") && removed_modules.erase("m_halfop.so") == 0)
 834                 added_modules.push_back("m_halfop.so");
 835
 836         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 837         {
 838                 // Don't remove cmd_*.so, just remove m_*.so
 839                 if (removing->c_str()[0] == 'c')
 840                         continue;
 841                 Module* m = ServerInstance->Modules->Find(*removing);
 842                 if (m && ServerInstance->Modules->Unload(m))
 843                 {
 844                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
 845
 846                         if (user)
 847                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
 848                         else
 849                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
 850                 }
 851                 else
 852                 {
 853                         if (user)
 854                                 user->WriteNumeric(ERR_CANTUNLOADMODULE, "%s %s :Failed to unload module %s: %s",user->nick.c_str(), removing->c_str(), removing->c_str(), ServerInstance->Modules->LastError().c_str());
 855                         else
 856                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
 857                 }
 858         }
 859
 860         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 861         {
 862                 if (ServerInstance->Modules->Load(adding->c_str()))
 863                 {
 864                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 865                         if (user)
 866                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
 867                         else
 868                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 869                 }
 870                 else
 871                 {
 872                         if (user)
 873                                 user->WriteNumeric(ERR_CANTLOADMODULE, "%s %s :Failed to load module %s: %s",user->nick.c_str(), adding->c_str(), adding->c_str(), ServerInstance->Modules->LastError().c_str());
 874                         else
 875                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 876                 }
 877         }
 878 }
 879
 880 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
 881 {
 882         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
 883 }
 884
 885 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 886 {
 887         ConfigTagList found = config_data.equal_range(tag);
 888         if (found.first == found.second)
 889                 return NULL;
 890         ConfigTag* rv = found.first->second;
 891         found.first++;
 892         if (found.first != found.second)
 893                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 894                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 895         return rv;
 896 }
 897
 898 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 899 {
 900         return config_data.equal_range(tag);
 901 }
 902
 903 bool ServerConfig::FileExists(const char* file)
 904 {
 905         struct stat sb;
 906         if (stat(file, &sb) == -1)
 907                 return false;
 908
 909         if ((sb.st_mode & S_IFDIR) > 0)
 910                 return false;
 911
 912         FILE *input = fopen(file, "r");
 913         if (input == NULL)
 914                 return false;
 915         else
 916         {
 917                 fclose(input);
 918                 return true;
 919         }
 920 }
 921
 922 const char* ServerConfig::CleanFilename(const char* name)
 923 {
 924         const char* p = name + strlen(name);
 925         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
 926         return (p != name ? ++p : p);
 927 }
 928
 929 const std::string& ServerConfig::GetSID()
 930 {
 931         return sid;
 932 }
 933
 934 void ConfigReaderThread::Run()
 935 {
 936         Config->Read();
 937         done = true;
 938 }
 939
 940 void ConfigReaderThread::Finish()
 941 {
 942         ServerConfig* old = ServerInstance->Config;
 943         ServerInstance->Logs->Log("CONFIG",DEBUG,"Switching to new configuration...");
 944         ServerInstance->Config = this->Config;
 945         Config->Apply(old, TheUserUID);
 946
 947         if (Config->valid)
 948         {
 949                 /*
 950                  * Apply the changed configuration from the rehash.
 951                  *
 952                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 953                  * thoroughly!!!
 954                  */
 955                 ServerInstance->XLines->CheckELines();
 956                 ServerInstance->XLines->ApplyLines();
 957                 ServerInstance->Res->Rehash();
 958                 ServerInstance->ResetMaxBans();
 959                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 960                 User* user = ServerInstance->FindNick(TheUserUID);
 961                 FOREACH_MOD(I_OnRehash, OnRehash(user));
 962                 ServerInstance->BuildISupport();
 963
 964                 ServerInstance->Logs->CloseLogs();
 965                 ServerInstance->Logs->OpenFileLogs();
 966
 967                 if (Config->RawLog && !old->RawLog)
 968                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 969
 970                 Config = old;
 971         }
 972         else
 973         {
 974                 // whoops, abort!
 975                 ServerInstance->Config = old;
 976         }
 977 }