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         : NoSnoticeStack(false)
  39 {
  40         WhoWasGroupSize = WhoWasMaxGroups = WhoWasMaxKeep = 0;
  41         RawLog = NoUserDns = HideBans = HideSplits = UndernetMsgPrefix = false;
  42         WildcardIPv6 = CycleHosts = InvBypassModes = true;
  43         dns_timeout = 5;
  44         MaxTargets = 20;
  45         NetBufferSize = 10240;
  46         SoftLimit = ServerInstance->SE->GetMaxFds();
  47         MaxConn = SOMAXCONN;
  48         MaxChans = 20;
  49         OperMaxChans = 30;
  50         c_ipv4_range = 32;
  51         c_ipv6_range = 128;
  52
  53         std::vector<KeyVal>* items;
  54         EmptyTag = ConfigTag::create("empty", "<auto>", 0, items);
  55 }
  56
  57 ServerConfig::~ServerConfig()
  58 {
  59         delete EmptyTag;
  60 }
  61
  62 void ServerConfig::Update005()
  63 {
  64         std::stringstream out(data005);
  65         std::vector<std::string> data;
  66         std::string token;
  67         while (out >> token)
  68                 data.push_back(token);
  69         sort(data.begin(), data.end());
  70
  71         std::string line5;
  72         isupport.clear();
  73         for(unsigned int i=0; i < data.size(); i++)
  74         {
  75                 token = data[i];
  76                 line5 = line5 + token + " ";
  77                 if (i % 13 == 12)
  78                 {
  79                         line5.append(":are supported by this server");
  80                         isupport.push_back(line5);
  81                         line5.clear();
  82                 }
  83         }
  84         if (!line5.empty())
  85         {
  86                 line5.append(":are supported by this server");
  87                 isupport.push_back(line5);
  88         }
  89 }
  90
  91 void ServerConfig::Send005(User* user)
  92 {
  93         for (std::vector<std::string>::iterator line = ServerInstance->Config->isupport.begin(); line != ServerInstance->Config->isupport.end(); line++)
  94                 user->WriteNumeric(RPL_ISUPPORT, "%s %s", user->nick.c_str(), line->c_str());
  95 }
  96
  97 template<typename T, typename V>
  98 static void range(T& value, V min, V max, V def, const char* msg)
  99 {
 100         if (value >= (T)min && value <= (T)max)
 101                 return;
 102         ServerInstance->Logs->Log("CONFIG", DEFAULT,
 103                 "WARNING: %s value of %ld is not between %ld and %ld; set to %ld.",
 104                 msg, (long)value, (long)min, (long)max, (long)def);
 105         value = def;
 106 }
 107
 108
 109 static void ValidIP(const std::string& ip, const std::string& key)
 110 {
 111         irc::sockets::sockaddrs dummy;
 112         if (!irc::sockets::aptosa(ip, 0, dummy))
 113                 throw CoreException("The value of "+key+" is not an IP address");
 114 }
 115
 116 static void ValidHost(const std::string& p, const std::string& msg)
 117 {
 118         int num_dots = 0;
 119         if (p.empty() || p[0] == '.')
 120                 throw CoreException("The value of "+msg+" is not a valid hostname");
 121         for (unsigned int i=0;i < p.length();i++)
 122         {
 123                 switch (p[i])
 124                 {
 125                         case ' ':
 126                                 throw CoreException("The value of "+msg+" is not a valid hostname");
 127                         case '.':
 128                                 num_dots++;
 129                         break;
 130                 }
 131         }
 132         if (num_dots == 0)
 133                 throw CoreException("The value of "+msg+" is not a valid hostname");
 134 }
 135
 136 bool ServerConfig::ApplyDisabledCommands(const std::string& data)
 137 {
 138         std::stringstream dcmds(data);
 139         std::string thiscmd;
 140
 141         /* Enable everything first */
 142         for (Commandtable::iterator x = ServerInstance->Parser->cmdlist.begin(); x != ServerInstance->Parser->cmdlist.end(); x++)
 143                 x->second->Disable(false);
 144
 145         /* Now disable all the ones which the user wants disabled */
 146         while (dcmds >> thiscmd)
 147         {
 148                 Commandtable::iterator cm = ServerInstance->Parser->cmdlist.find(thiscmd);
 149                 if (cm != ServerInstance->Parser->cmdlist.end())
 150                 {
 151                         cm->second->Disable(true);
 152                 }
 153         }
 154         return true;
 155 }
 156
 157 static void FindDNS(std::string& server)
 158 {
 159         if (!server.empty())
 160                 return;
 161 #ifdef _WIN32
 162         // attempt to look up their nameserver from the system
 163         ServerInstance->Logs->Log("CONFIG",DEFAULT,"WARNING: <dns:server> not defined, attempting to find a working server in the system settings...");
 164
 165         PFIXED_INFO pFixedInfo;
 166         DWORD dwBufferSize = sizeof(FIXED_INFO);
 167         pFixedInfo = (PFIXED_INFO) HeapAlloc(GetProcessHeap(), 0, sizeof(FIXED_INFO));
 168
 169         if(pFixedInfo)
 170         {
 171                 if (GetNetworkParams(pFixedInfo, &dwBufferSize) == ERROR_BUFFER_OVERFLOW) {
 172                         HeapFree(GetProcessHeap(), 0, pFixedInfo);
 173                         pFixedInfo = (PFIXED_INFO) HeapAlloc(GetProcessHeap(), 0, dwBufferSize);
 174                 }
 175
 176                 if(pFixedInfo) {
 177                         if (GetNetworkParams(pFixedInfo, &dwBufferSize) == NO_ERROR)
 178                                 server = pFixedInfo->DnsServerList.IpAddress.String;
 179
 180                         HeapFree(GetProcessHeap(), 0, pFixedInfo);
 181                 }
 182
 183                 if(!server.empty())
 184                 {
 185                         ServerInstance->Logs->Log("CONFIG",DEFAULT,"<dns:server> set to '%s' as first active resolver in the system settings.", server.c_str());
 186                         return;
 187                 }
 188         }
 189
 190         ServerInstance->Logs->Log("CONFIG",DEFAULT,"No viable nameserver found! Defaulting to nameserver '127.0.0.1'!");
 191 #else
 192         // attempt to look up their nameserver from /etc/resolv.conf
 193         ServerInstance->Logs->Log("CONFIG",DEFAULT,"WARNING: <dns:server> not defined, attempting to find working server in /etc/resolv.conf...");
 194
 195         std::ifstream resolv("/etc/resolv.conf");
 196
 197         while (resolv >> server)
 198         {
 199                 if (server == "nameserver")
 200                 {
 201                         resolv >> server;
 202                         if (server.find_first_not_of("0123456789.") == std::string::npos)
 203                         {
 204                                 ServerInstance->Logs->Log("CONFIG",DEFAULT,"<dns:server> set to '%s' as first resolver in /etc/resolv.conf.",server.c_str());
 205                                 return;
 206                         }
 207                 }
 208         }
 209
 210         ServerInstance->Logs->Log("CONFIG",DEFAULT,"/etc/resolv.conf contains no viable nameserver entries! Defaulting to nameserver '127.0.0.1'!");
 211 #endif
 212         server = "127.0.0.1";
 213 }
 214
 215 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
 216 {
 217         ConfigTagList tags = conf->ConfTags(tag);
 218         for(ConfigIter i = tags.first; i != tags.second; ++i)
 219         {
 220                 ConfigTag* ctag = i->second;
 221                 std::string mask;
 222                 if (!ctag->readString(key, mask))
 223                         throw CoreException("<"+tag+":"+key+"> missing at " + ctag->getTagLocation());
 224                 std::string reason = ctag->getString("reason", "<Config>");
 225                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
 226                 if (!ServerInstance->XLines->AddLine(xl, NULL))
 227                         delete xl;
 228         }
 229 }
 230
 231 typedef std::map<std::string, ConfigTag*> LocalIndex;
 232 void ServerConfig::CrossCheckOperClassType()
 233 {
 234         LocalIndex operclass;
 235         ConfigTagList tags = ConfTags("class");
 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("<class:name> missing from tag at " + tag->getTagLocation());
 242                 if (operclass.find(name) != operclass.end())
 243                         throw CoreException("Duplicate class block with name " + name + " at " + tag->getTagLocation());
 244                 operclass[name] = tag;
 245         }
 246         tags = ConfTags("type");
 247         for(ConfigIter i = tags.first; i != tags.second; ++i)
 248         {
 249                 ConfigTag* tag = i->second;
 250                 std::string name = tag->getString("name");
 251                 if (name.empty())
 252                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
 253                 if (!ServerInstance->IsNick(name.c_str(), Limits.NickMax))
 254                         throw CoreException("<type:name> is invalid (value '" + name + "')");
 255                 if (oper_blocks.find(" " + name) != oper_blocks.end())
 256                         throw CoreException("Duplicate type block with name " + name + " at " + tag->getTagLocation());
 257
 258                 OperInfo* ifo = new OperInfo;
 259                 oper_blocks[" " + name] = ifo;
 260                 ifo->name = name;
 261                 ifo->type_block = tag;
 262
 263                 std::string classname;
 264                 irc::spacesepstream str(tag->getString("classes"));
 265                 while (str.GetToken(classname))
 266                 {
 267                         LocalIndex::iterator cls = operclass.find(classname);
 268                         if (cls == operclass.end())
 269                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 270                         ifo->class_blocks.push_back(cls->second);
 271                 }
 272         }
 273
 274         tags = ConfTags("oper");
 275         for(ConfigIter i = tags.first; i != tags.second; ++i)
 276         {
 277                 ConfigTag* tag = i->second;
 278
 279                 std::string name = tag->getString("name");
 280                 if (name.empty())
 281                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 282
 283                 std::string type = tag->getString("type");
 284                 OperIndex::iterator tblk = oper_blocks.find(" " + type);
 285                 if (tblk == oper_blocks.end())
 286                         throw CoreException("Oper block " + name + " has missing type " + type);
 287                 if (oper_blocks.find(name) != oper_blocks.end())
 288                         throw CoreException("Duplicate oper block with name " + name + " at " + tag->getTagLocation());
 289
 290                 OperInfo* ifo = new OperInfo;
 291                 ifo->name = type;
 292                 ifo->oper_block = tag;
 293                 ifo->type_block = tblk->second->type_block;
 294                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 295                 oper_blocks[name] = ifo;
 296         }
 297 }
 298
 299 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 300 {
 301         typedef std::map<std::string, ConnectClass*> ClassMap;
 302         ClassMap oldBlocksByMask;
 303         if (current)
 304         {
 305                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 306                 {
 307                         ConnectClass* c = *i;
 308                         if (c->name.substr(0, 8) != "unnamed-")
 309                         {
 310                                 oldBlocksByMask["n" + c->name] = c;
 311                         }
 312                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 313                         {
 314                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 315                                 typeMask += c->host;
 316                                 oldBlocksByMask[typeMask] = c;
 317                         }
 318                 }
 319         }
 320
 321         int blk_count = config_data.count("connect");
 322         if (blk_count == 0)
 323         {
 324                 // No connect blocks found; make a trivial default block
 325                 std::vector<KeyVal>* items;
 326                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 327                 items->push_back(std::make_pair("allow", "*"));
 328                 config_data.insert(std::make_pair("connect", tag));
 329                 blk_count = 1;
 330         }
 331
 332         Classes.resize(blk_count);
 333         std::map<std::string, int> names;
 334
 335         bool try_again = true;
 336         for(int tries=0; try_again; tries++)
 337         {
 338                 try_again = false;
 339                 ConfigTagList tags = ConfTags("connect");
 340                 int i=0;
 341                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 342                 {
 343                         ConfigTag* tag = it->second;
 344                         if (Classes[i])
 345                                 continue;
 346
 347                         ConnectClass* parent = NULL;
 348                         std::string parentName = tag->getString("parent");
 349                         if (!parentName.empty())
 350                         {
 351                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 352                                 if (parentIter == names.end())
 353                                 {
 354                                         try_again = true;
 355                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 356                                         if (tries >= blk_count)
 357                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 358                                         continue;
 359                                 }
 360                                 parent = Classes[parentIter->second];
 361                         }
 362
 363                         std::string name = tag->getString("name");
 364                         std::string mask, typeMask;
 365                         char type;
 366
 367                         if (tag->readString("allow", mask, false))
 368                         {
 369                                 type = CC_ALLOW;
 370                                 typeMask = 'a' + mask;
 371                         }
 372                         else if (tag->readString("deny", mask, false))
 373                         {
 374                                 type = CC_DENY;
 375                                 typeMask = 'd' + mask;
 376                         }
 377                         else if (!name.empty())
 378                         {
 379                                 type = CC_NAMED;
 380                                 mask = name;
 381                                 typeMask = 'n' + mask;
 382                         }
 383                         else
 384                         {
 385                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 386                         }
 387
 388                         if (name.empty())
 389                         {
 390                                 name = "unnamed-" + ConvToStr(i);
 391                         }
 392                         else
 393                         {
 394                                 typeMask = 'n' + name;
 395                         }
 396
 397                         if (names.find(name) != names.end())
 398                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 399                         names[name] = i;
 400
 401                         ConnectClass* me = parent ?
 402                                 new ConnectClass(tag, type, mask, *parent) :
 403                                 new ConnectClass(tag, type, mask);
 404
 405                         me->name = name;
 406
 407                         me->registration_timeout = tag->getInt("timeout", me->registration_timeout);
 408                         me->pingtime = tag->getInt("pingfreq", me->pingtime);
 409                         std::string sendq;
 410                         if (tag->readString("sendq", sendq))
 411                         {
 412                                 // attempt to guess a good hard/soft sendq from a single value
 413                                 long value = atol(sendq.c_str());
 414                                 if (value > 16384)
 415                                         me->softsendqmax = value / 16;
 416                                 else
 417                                         me->softsendqmax = value;
 418                                 me->hardsendqmax = value * 8;
 419                         }
 420                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 421                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 422                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 423                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 424                         me->commandrate = tag->getInt("commandrate", me->commandrate);
 425                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 426                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 427                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 428                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 429                         me->maxconnwarn = tag->getBool("maxconnwarn", me->maxconnwarn);
 430                         me->limit = tag->getInt("limit", me->limit);
 431
 432                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 433                         if (oldMask != oldBlocksByMask.end())
 434                         {
 435                                 ConnectClass* old = oldMask->second;
 436                                 oldBlocksByMask.erase(oldMask);
 437                                 old->Update(me);
 438                                 delete me;
 439                                 me = old;
 440                         }
 441                         Classes[i] = me;
 442                 }
 443         }
 444 }
 445
 446 /** Represents a deprecated configuration tag.
 447  */
 448 struct Deprecated
 449 {
 450         /** Tag name
 451          */
 452         const char* tag;
 453         /** Tag value
 454          */
 455         const char* value;
 456         /** Reason for deprecation
 457          */
 458         const char* reason;
 459 };
 460
 461 static const Deprecated ChangedConfig[] = {
 462         {"options", "hidelinks",                "has been moved to <security:hidelinks> as of 1.2a3"},
 463         {"options", "hidewhois",                "has been moved to <security:hidewhois> as of 1.2a3"},
 464         {"options", "userstats",                "has been moved to <security:userstats> as of 1.2a3"},
 465         {"options", "customversion",    "has been moved to <security:customversion> as of 1.2a3"},
 466         {"options", "hidesplits",               "has been moved to <security:hidesplits> as of 1.2a3"},
 467         {"options", "hidebans",         "has been moved to <security:hidebans> as of 1.2a3"},
 468         {"options", "hidekills",                "has been moved to <security:hidekills> as of 1.2a3"},
 469         {"options", "operspywhois",             "has been moved to <security:operspywhois> as of 1.2a3"},
 470         {"options", "announceinvites",  "has been moved to <security:announceinvites> as of 1.2a3"},
 471         {"options", "hidemodes",                "has been moved to <security:hidemodes> as of 1.2a3"},
 472         {"options", "maxtargets",               "has been moved to <security:maxtargets> as of 1.2a3"},
 473         {"options",     "nouserdns",            "has been moved to <performance:nouserdns> as of 1.2a3"},
 474         {"options",     "maxwho",               "has been moved to <performance:maxwho> as of 1.2a3"},
 475         {"options",     "softlimit",            "has been moved to <performance:softlimit> as of 1.2a3"},
 476         {"options", "somaxconn",                "has been moved to <performance:somaxconn> as of 1.2a3"},
 477         {"options", "netbuffersize",    "has been moved to <performance:netbuffersize> as of 1.2a3"},
 478         {"options", "maxwho",           "has been moved to <performance:maxwho> as of 1.2a3"},
 479         {"options",     "loglevel",             "1.2+ does not use the loglevel value. Please define <log> tags instead."},
 480         {"die",     "value",            "you need to reread your config"},
 481         {"bind",    "transport",                "has been moved to <bind:ssl> as of 2.0a1"},
 482         {"link",    "transport",                "has been moved to <link:ssl> as of 2.0a1"},
 483         {"link",        "autoconnect",          "2.0+ does not use the autoconnect value. Please define <autoconnect> tags instead."},
 484 };
 485
 486 void ServerConfig::Fill()
 487 {
 488         ConfigTag* options = ConfValue("options");
 489         ConfigTag* security = ConfValue("security");
 490         if (sid.empty())
 491         {
 492                 ServerName = ConfValue("server")->getString("name");
 493                 sid = ConfValue("server")->getString("id");
 494                 ValidHost(ServerName, "<server:name>");
 495                 if (!sid.empty() && !ServerInstance->IsSID(sid))
 496                         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.");
 497         }
 498         else
 499         {
 500                 if (ServerName != ConfValue("server")->getString("name"))
 501                         throw CoreException("You must restart to change the server name or SID");
 502                 std::string nsid = ConfValue("server")->getString("id");
 503                 if (!nsid.empty() && nsid != sid)
 504                         throw CoreException("You must restart to change the server name or SID");
 505         }
 506         diepass = ConfValue("power")->getString("diepass");
 507         restartpass = ConfValue("power")->getString("restartpass");
 508         powerhash = ConfValue("power")->getString("hash");
 509         PrefixQuit = options->getString("prefixquit");
 510         SuffixQuit = options->getString("suffixquit");
 511         FixedQuit = options->getString("fixedquit");
 512         PrefixPart = options->getString("prefixpart");
 513         SuffixPart = options->getString("suffixpart");
 514         FixedPart = options->getString("fixedpart");
 515         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 516         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 517         MoronBanner = options->getString("moronbanner", "You're banned!");
 518         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 519         Network = ConfValue("server")->getString("network", "Network");
 520         AdminName = ConfValue("admin")->getString("name", "");
 521         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 522         AdminNick = ConfValue("admin")->getString("nick", "admin");
 523         ModPath = ConfValue("path")->getString("moduledir", MOD_PATH);
 524         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 525         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 526         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 527         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 528         UserStats = security->getString("userstats");
 529         CustomVersion = security->getString("customversion", Network + " IRCd");
 530         HideSplits = security->getBool("hidesplits");
 531         HideBans = security->getBool("hidebans");
 532         HideWhoisServer = security->getString("hidewhois");
 533         HideKillsServer = security->getString("hidekills");
 534         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 535         GenericOper = security->getBool("genericoper");
 536         NoUserDns = ConfValue("performance")->getBool("nouserdns");
 537         SyntaxHints = options->getBool("syntaxhints");
 538         CycleHosts = options->getBool("cyclehosts");
 539         CycleHostsFromUser = options->getBool("cyclehostsfromuser");
 540         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 541         FullHostInTopic = options->getBool("hostintopic");
 542         MaxTargets = security->getInt("maxtargets", 20);
 543         DefaultModes = options->getString("defaultmodes", "nt");
 544         PID = ConfValue("pid")->getString("file");
 545         WhoWasGroupSize = ConfValue("whowas")->getInt("groupsize");
 546         WhoWasMaxGroups = ConfValue("whowas")->getInt("maxgroups");
 547         WhoWasMaxKeep = ServerInstance->Duration(ConfValue("whowas")->getString("maxkeep"));
 548         MaxChans = ConfValue("channels")->getInt("users", 20);
 549         OperMaxChans = ConfValue("channels")->getInt("opers", 60);
 550         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 551         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 552         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 553         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 554         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 555         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 556         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 557         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 558         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 559         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 560         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 561         InvBypassModes = options->getBool("invitebypassmodes", true);
 562         NoSnoticeStack = options->getBool("nosnoticestack", false);
 563         WelcomeNotice = options->getBool("welcomenotice", true);
 564
 565         range(SoftLimit, 10, ServerInstance->SE->GetMaxFds(), ServerInstance->SE->GetMaxFds(), "<performance:softlimit>");
 566         if (ConfValue("performance")->getBool("limitsomaxconn", true))
 567                 range(MaxConn, 0, SOMAXCONN, SOMAXCONN, "<performance:somaxconn>");
 568         range(MaxTargets, 1, 31, 20, "<security:maxtargets>");
 569         range(NetBufferSize, 1024, 65534, 10240, "<performance:netbuffersize>");
 570         range(WhoWasGroupSize, 0, 10000, 10, "<whowas:groupsize>");
 571         range(WhoWasMaxGroups, 0, 1000000, 10240, "<whowas:maxgroups>");
 572         range(WhoWasMaxKeep, 3600, INT_MAX, 3600, "<whowas:maxkeep>");
 573
 574         ValidIP(DNSServer, "<dns:server>");
 575
 576         std::string defbind = options->getString("defaultbind");
 577         if (assign(defbind) == "ipv4")
 578         {
 579                 WildcardIPv6 = false;
 580         }
 581         else if (assign(defbind) == "ipv6")
 582         {
 583                 WildcardIPv6 = true;
 584         }
 585         else
 586         {
 587                 WildcardIPv6 = true;
 588                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 589                 if (socktest < 0)
 590                         WildcardIPv6 = false;
 591                 else
 592                         ServerInstance->SE->Close(socktest);
 593         }
 594         ConfigTagList tags = ConfTags("uline");
 595         for(ConfigIter i = tags.first; i != tags.second; ++i)
 596         {
 597                 ConfigTag* tag = i->second;
 598                 std::string server;
 599                 if (!tag->readString("server", server))
 600                         throw CoreException("<uline> tag missing server at " + tag->getTagLocation());
 601                 ulines[assign(server)] = tag->getBool("silent");
 602         }
 603
 604         tags = ConfTags("banlist");
 605         for(ConfigIter i = tags.first; i != tags.second; ++i)
 606         {
 607                 ConfigTag* tag = i->second;
 608                 std::string chan;
 609                 if (!tag->readString("chan", chan))
 610                         throw CoreException("<banlist> tag missing chan at " + tag->getTagLocation());
 611                 maxbans[chan] = tag->getInt("limit");
 612         }
 613
 614         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 615         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 616         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 617         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 618
 619         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 620         std::string modes = ConfValue("disabled")->getString("usermodes");
 621         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 622         {
 623                 // Complain when the character is not a-z or A-Z
 624                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 625                         throw CoreException("Invalid usermode " + std::string(1, *p) + " was found.");
 626                 DisabledUModes[*p - 'A'] = 1;
 627         }
 628
 629         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 630         modes = ConfValue("disabled")->getString("chanmodes");
 631         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 632         {
 633                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 634                         throw CoreException("Invalid chanmode " + std::string(1, *p) + " was found.");
 635                 DisabledCModes[*p - 'A'] = 1;
 636         }
 637
 638         memset(HideModeLists, 0, sizeof(HideModeLists));
 639         modes = ConfValue("security")->getString("hidemodes");
 640         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 641                 HideModeLists[(unsigned char) *p] = true;
 642
 643         std::string v = security->getString("announceinvites");
 644
 645         if (v == "ops")
 646                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 647         else if (v == "all")
 648                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 649         else if (v == "dynamic")
 650                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 651         else
 652                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 653
 654         v = security->getString("operspywhois");
 655         if (v == "splitmsg")
 656                 OperSpyWhois = SPYWHOIS_SPLITMSG;
 657         else if (v == "on" || v == "yes")
 658                 OperSpyWhois = SPYWHOIS_SINGLEMSG;
 659         else
 660                 OperSpyWhois = SPYWHOIS_NONE;
 661 }
 662
 663 // WARNING: it is not safe to use most of the codebase in this function, as it
 664 // will run in the config reader thread
 665 void ServerConfig::Read()
 666 {
 667         /* Load and parse the config file, if there are any errors then explode */
 668
 669         ParseStack stack(this);
 670         try
 671         {
 672                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 673         }
 674         catch (CoreException& err)
 675         {
 676                 valid = false;
 677                 errstr << err.GetReason();
 678         }
 679         if (valid)
 680         {
 681                 DNSServer = ConfValue("dns")->getString("server");
 682                 FindDNS(DNSServer);
 683         }
 684 }
 685
 686 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 687 {
 688         valid = true;
 689         if (old)
 690         {
 691                 /*
 692                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 693                  */
 694                 this->ServerName = old->ServerName;
 695                 this->sid = old->sid;
 696                 this->cmdline = old->cmdline;
 697         }
 698
 699         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 700         try
 701         {
 702                 for (int Index = 0; Index * sizeof(Deprecated) < sizeof(ChangedConfig); Index++)
 703                 {
 704                         std::string dummy;
 705                         ConfigTagList tags = ConfTags(ChangedConfig[Index].tag);
 706                         for(ConfigIter i = tags.first; i != tags.second; ++i)
 707                         {
 708                                 if (i->second->readString(ChangedConfig[Index].value, dummy, true))
 709                                         errstr << "Your configuration contains a deprecated value: <"
 710                                                 << ChangedConfig[Index].tag << ":" << ChangedConfig[Index].value << "> - " << ChangedConfig[Index].reason
 711                                                 << " (at " << i->second->getTagLocation() << ")\n";
 712                         }
 713                 }
 714
 715                 Fill();
 716
 717                 // Handle special items
 718                 CrossCheckOperClassType();
 719                 CrossCheckConnectBlocks(old);
 720         }
 721         catch (CoreException &ce)
 722         {
 723                 errstr << ce.GetReason();
 724         }
 725
 726         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 727         valid = errstr.str().empty();
 728
 729         // write once here, to try it out and make sure its ok
 730         if (valid)
 731                 ServerInstance->WritePID(this->PID);
 732
 733         if (old)
 734         {
 735                 // On first run, ports are bound later on
 736                 FailedPortList pl;
 737                 ServerInstance->BindPorts(pl);
 738                 if (pl.size())
 739                 {
 740                         errstr << "Not all your client ports could be bound.\nThe following port(s) failed to bind:\n";
 741
 742                         int j = 1;
 743                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 744                         {
 745                                 char buf[MAXBUF];
 746                                 snprintf(buf, MAXBUF, "%d.   Address: %s   Reason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 747                                 errstr << buf;
 748                         }
 749                 }
 750         }
 751
 752         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 753
 754         if (!valid)
 755         {
 756                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "There were errors in your configuration file:");
 757                 Classes.clear();
 758         }
 759
 760         while (errstr.good())
 761         {
 762                 std::string line;
 763                 getline(errstr, line, '\n');
 764                 if (line.empty())
 765                         continue;
 766                 // On startup, print out to console (still attached at this point)
 767                 if (!old)
 768                         std::cout << line << std::endl;
 769                 // If a user is rehashing, tell them directly
 770                 if (user)
 771                         user->SendText(":%s NOTICE %s :*** %s", ServerInstance->Config->ServerName.c_str(), user->nick.c_str(), line.c_str());
 772                 // Also tell opers
 773                 ServerInstance->SNO->WriteGlobalSno('a', line);
 774         }
 775
 776         errstr.clear();
 777         errstr.str(std::string());
 778
 779         // Re-parse our MOTD and RULES files for colors -- Justasic
 780         for (ClassVector::const_iterator it = this->Classes.begin(), it_end = this->Classes.end(); it != it_end; ++it)
 781         {
 782                 ConfigTag *tag = (*it)->config;
 783                 // Make sure our connection class allows motd colors
 784                 if(!tag->getBool("allowmotdcolors"))
 785                       continue;
 786
 787                 ConfigFileCache::iterator file = this->Files.find(tag->getString("motd", "motd"));
 788                 if (file != this->Files.end())
 789                       InspIRCd::ProcessColors(file->second);
 790
 791                 file = this->Files.find(tag->getString("rules", "rules"));
 792                 if (file != this->Files.end())
 793                       InspIRCd::ProcessColors(file->second);
 794         }
 795
 796         /* No old configuration -> initial boot, nothing more to do here */
 797         if (!old)
 798         {
 799                 if (!valid)
 800                 {
 801                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 802                 }
 803
 804                 return;
 805         }
 806
 807
 808         // If there were errors processing configuration, don't touch modules.
 809         if (!valid)
 810                 return;
 811
 812         ApplyModules(user);
 813
 814         if (user)
 815                 user->SendText(":%s NOTICE %s :*** Successfully rehashed server.",
 816                         ServerInstance->Config->ServerName.c_str(), user->nick.c_str());
 817         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 818 }
 819
 820 void ServerConfig::ApplyModules(User* user)
 821 {
 822         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
 823         if (whowas)
 824                 WhowasRequest(NULL, whowas, WhowasRequest::WHOWAS_PRUNE).Send();
 825
 826         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
 827         std::vector<std::string> added_modules;
 828         std::set<std::string> removed_modules(v.begin(), v.end());
 829
 830         ConfigTagList tags = ConfTags("module");
 831         for(ConfigIter i = tags.first; i != tags.second; ++i)
 832         {
 833                 ConfigTag* tag = i->second;
 834                 std::string name;
 835                 if (tag->readString("name", name))
 836                 {
 837                         // if this module is already loaded, the erase will succeed, so we need do nothing
 838                         // otherwise, we need to add the module (which will be done later)
 839                         if (removed_modules.erase(name) == 0)
 840                                 added_modules.push_back(name);
 841                 }
 842         }
 843
 844         if (ConfValue("options")->getBool("allowhalfop") && removed_modules.erase("m_halfop.so") == 0)
 845                 added_modules.push_back("m_halfop.so");
 846
 847         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 848         {
 849                 // Don't remove cmd_*.so, just remove m_*.so
 850                 if (removing->c_str()[0] == 'c')
 851                         continue;
 852                 Module* m = ServerInstance->Modules->Find(*removing);
 853                 if (m && ServerInstance->Modules->Unload(m))
 854                 {
 855                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
 856
 857                         if (user)
 858                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
 859                         else
 860                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
 861                 }
 862                 else
 863                 {
 864                         if (user)
 865                                 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());
 866                         else
 867                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
 868                 }
 869         }
 870
 871         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 872         {
 873                 if (ServerInstance->Modules->Load(adding->c_str()))
 874                 {
 875                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 876                         if (user)
 877                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
 878                         else
 879                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 880                 }
 881                 else
 882                 {
 883                         if (user)
 884                                 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());
 885                         else
 886                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 887                 }
 888         }
 889 }
 890
 891 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
 892 {
 893         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
 894 }
 895
 896 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 897 {
 898         ConfigTagList found = config_data.equal_range(tag);
 899         if (found.first == found.second)
 900                 return EmptyTag;
 901         ConfigTag* rv = found.first->second;
 902         found.first++;
 903         if (found.first != found.second)
 904                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 905                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 906         return rv;
 907 }
 908
 909 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 910 {
 911         return config_data.equal_range(tag);
 912 }
 913
 914 bool ServerConfig::FileExists(const char* file)
 915 {
 916         struct stat sb;
 917         if (stat(file, &sb) == -1)
 918                 return false;
 919
 920         if ((sb.st_mode & S_IFDIR) > 0)
 921                 return false;
 922
 923         FILE *input = fopen(file, "r");
 924         if (input == NULL)
 925                 return false;
 926         else
 927         {
 928                 fclose(input);
 929                 return true;
 930         }
 931 }
 932
 933 const char* ServerConfig::CleanFilename(const char* name)
 934 {
 935         const char* p = name + strlen(name);
 936         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
 937         return (p != name ? ++p : p);
 938 }
 939
 940 const std::string& ServerConfig::GetSID()
 941 {
 942         return sid;
 943 }
 944
 945 void ConfigReaderThread::Run()
 946 {
 947         Config->Read();
 948         done = true;
 949 }
 950
 951 void ConfigReaderThread::Finish()
 952 {
 953         ServerConfig* old = ServerInstance->Config;
 954         ServerInstance->Logs->Log("CONFIG",DEBUG,"Switching to new configuration...");
 955         ServerInstance->Config = this->Config;
 956         Config->Apply(old, TheUserUID);
 957
 958         if (Config->valid)
 959         {
 960                 /*
 961                  * Apply the changed configuration from the rehash.
 962                  *
 963                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 964                  * thoroughly!!!
 965                  */
 966                 ServerInstance->XLines->CheckELines();
 967                 ServerInstance->XLines->ApplyLines();
 968                 ServerInstance->Res->Rehash();
 969                 ServerInstance->ResetMaxBans();
 970                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 971                 User* user = ServerInstance->FindNick(TheUserUID);
 972                 FOREACH_MOD(I_OnRehash, OnRehash(user));
 973                 ServerInstance->BuildISupport();
 974
 975                 ServerInstance->Logs->CloseLogs();
 976                 ServerInstance->Logs->OpenFileLogs();
 977
 978                 if (Config->RawLog && !old->RawLog)
 979                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 980
 981                 Config = old;
 982         }
 983         else
 984         {
 985                 // whoops, abort!
 986                 ServerInstance->Config = old;
 987         }
 988 }