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