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 #ifdef _WIN32
  32 #include <Iphlpapi.h>
  33 #pragma comment(lib, "Iphlpapi.lib")
  34 #endif
  35
  36 ServerConfig::ServerConfig()
  37 {
  38         WhoWasGroupSize = WhoWasMaxGroups = WhoWasMaxKeep = 0;
  39         RawLog = NoUserDns = HideBans = HideSplits = UndernetMsgPrefix = false;
  40         WildcardIPv6 = CycleHosts = InvBypassModes = true;
  41         dns_timeout = 5;
  42         MaxTargets = 20;
  43         NetBufferSize = 10240;
  44         SoftLimit = ServerInstance->SE->GetMaxFds();
  45         MaxConn = SOMAXCONN;
  46         MaxChans = 20;
  47         OperMaxChans = 30;
  48         c_ipv4_range = 32;
  49         c_ipv6_range = 128;
  50 }
  51
  52 void ServerConfig::Update005()
  53 {
  54         std::stringstream out(data005);
  55         std::vector<std::string> data;
  56         std::string token;
  57         while (out >> token)
  58                 data.push_back(token);
  59         sort(data.begin(), data.end());
  60
  61         std::string line5;
  62         isupport.clear();
  63         for(unsigned int i=0; i < data.size(); i++)
  64         {
  65                 token = data[i];
  66                 line5 = line5 + token + " ";
  67                 if (i % 13 == 12)
  68                 {
  69                         line5.append(":are supported by this server");
  70                         isupport.push_back(line5);
  71                         line5.clear();
  72                 }
  73         }
  74         if (!line5.empty())
  75         {
  76                 line5.append(":are supported by this server");
  77                 isupport.push_back(line5);
  78         }
  79 }
  80
  81 void ServerConfig::Send005(User* user)
  82 {
  83         for (std::vector<std::string>::iterator line = ServerInstance->Config->isupport.begin(); line != ServerInstance->Config->isupport.end(); line++)
  84                 user->WriteNumeric(RPL_ISUPPORT, "%s %s", user->nick.c_str(), line->c_str());
  85 }
  86
  87 template<typename T, typename V>
  88 static void range(T& value, V min, V max, V def, const char* msg)
  89 {
  90         if (value >= (T)min && value <= (T)max)
  91                 return;
  92         ServerInstance->Logs->Log("CONFIG", DEFAULT,
  93                 "WARNING: %s value of %ld is not between %ld and %ld; set to %ld.",
  94                 msg, (long)value, (long)min, (long)max, (long)def);
  95         value = def;
  96 }
  97
  98
  99 static void ValidIP(const std::string& ip, const std::string& key)
 100 {
 101         irc::sockets::sockaddrs dummy;
 102         if (!irc::sockets::aptosa(ip, 0, dummy))
 103                 throw CoreException("The value of "+key+" is not an IP address");
 104 }
 105
 106 static void ValidHost(const std::string& p, const std::string& msg)
 107 {
 108         int num_dots = 0;
 109         if (p.empty() || p[0] == '.')
 110                 throw CoreException("The value of "+msg+" is not a valid hostname");
 111         for (unsigned int i=0;i < p.length();i++)
 112         {
 113                 switch (p[i])
 114                 {
 115                         case ' ':
 116                                 throw CoreException("The value of "+msg+" is not a valid hostname");
 117                         case '.':
 118                                 num_dots++;
 119                         break;
 120                 }
 121         }
 122         if (num_dots == 0)
 123                 throw CoreException("The value of "+msg+" is not a valid hostname");
 124 }
 125
 126 bool ServerConfig::ApplyDisabledCommands(const std::string& data)
 127 {
 128         std::stringstream dcmds(data);
 129         std::string thiscmd;
 130
 131         /* Enable everything first */
 132         for (Commandtable::iterator x = ServerInstance->Parser->cmdlist.begin(); x != ServerInstance->Parser->cmdlist.end(); x++)
 133                 x->second->Disable(false);
 134
 135         /* Now disable all the ones which the user wants disabled */
 136         while (dcmds >> thiscmd)
 137         {
 138                 Commandtable::iterator cm = ServerInstance->Parser->cmdlist.find(thiscmd);
 139                 if (cm != ServerInstance->Parser->cmdlist.end())
 140                 {
 141                         cm->second->Disable(true);
 142                 }
 143         }
 144         return true;
 145 }
 146
 147 static void FindDNS(std::string& server)
 148 {
 149         if (!server.empty())
 150                 return;
 151 #ifdef _WIN32
 152         // attempt to look up their nameserver from the system
 153         ServerInstance->Logs->Log("CONFIG",DEFAULT,"WARNING: <dns:server> not defined, attempting to find a working server in the system settings...");
 154
 155         PFIXED_INFO pFixedInfo;
 156         DWORD dwBufferSize = sizeof(FIXED_INFO);
 157         pFixedInfo = (PFIXED_INFO) HeapAlloc(GetProcessHeap(), 0, sizeof(FIXED_INFO));
 158
 159         if(pFixedInfo)
 160         {
 161                 if (GetNetworkParams(pFixedInfo, &dwBufferSize) == ERROR_BUFFER_OVERFLOW) {
 162                         HeapFree(GetProcessHeap(), 0, pFixedInfo);
 163                         pFixedInfo = (PFIXED_INFO) HeapAlloc(GetProcessHeap(), 0, dwBufferSize);
 164                 }
 165
 166                 if(pFixedInfo) {
 167                         if (GetNetworkParams(pFixedInfo, &dwBufferSize) == NO_ERROR)
 168                                 server = pFixedInfo->DnsServerList.IpAddress.String;
 169
 170                         HeapFree(GetProcessHeap(), 0, pFixedInfo);
 171                 }
 172
 173                 if(!server.empty())
 174                 {
 175                         ServerInstance->Logs->Log("CONFIG",DEFAULT,"<dns:server> set to '%s' as first active resolver in the system settings.", server.c_str());
 176                         return;
 177                 }
 178         }
 179
 180         ServerInstance->Logs->Log("CONFIG",DEFAULT,"No viable nameserver found! Defaulting to nameserver '127.0.0.1'!");
 181 #else
 182         // attempt to look up their nameserver from /etc/resolv.conf
 183         ServerInstance->Logs->Log("CONFIG",DEFAULT,"WARNING: <dns:server> not defined, attempting to find working server in /etc/resolv.conf...");
 184
 185         std::ifstream resolv("/etc/resolv.conf");
 186
 187         while (resolv >> server)
 188         {
 189                 if (server == "nameserver")
 190                 {
 191                         resolv >> server;
 192                         if (server.find_first_not_of("0123456789.") == std::string::npos)
 193                         {
 194                                 ServerInstance->Logs->Log("CONFIG",DEFAULT,"<dns:server> set to '%s' as first resolver in /etc/resolv.conf.",server.c_str());
 195                                 return;
 196                         }
 197                 }
 198         }
 199
 200         ServerInstance->Logs->Log("CONFIG",DEFAULT,"/etc/resolv.conf contains no viable nameserver entries! Defaulting to nameserver '127.0.0.1'!");
 201 #endif
 202         server = "127.0.0.1";
 203 }
 204
 205 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
 206 {
 207         ConfigTagList tags = conf->ConfTags(tag);
 208         for(ConfigIter i = tags.first; i != tags.second; ++i)
 209         {
 210                 ConfigTag* ctag = i->second;
 211                 std::string mask;
 212                 if (!ctag->readString(key, mask))
 213                         throw CoreException("<"+tag+":"+key+"> missing at " + ctag->getTagLocation());
 214                 std::string reason = ctag->getString("reason", "<Config>");
 215                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
 216                 if (!ServerInstance->XLines->AddLine(xl, NULL))
 217                         delete xl;
 218         }
 219 }
 220
 221 typedef std::map<std::string, ConfigTag*> LocalIndex;
 222 void ServerConfig::CrossCheckOperClassType()
 223 {
 224         LocalIndex operclass;
 225         ConfigTagList tags = ConfTags("class");
 226         for(ConfigIter i = tags.first; i != tags.second; ++i)
 227         {
 228                 ConfigTag* tag = i->second;
 229                 std::string name = tag->getString("name");
 230                 if (name.empty())
 231                         throw CoreException("<class:name> missing from tag at " + tag->getTagLocation());
 232                 if (operclass.find(name) != operclass.end())
 233                         throw CoreException("Duplicate class block with name " + name + " at " + tag->getTagLocation());
 234                 operclass[name] = tag;
 235         }
 236         tags = ConfTags("type");
 237         for(ConfigIter i = tags.first; i != tags.second; ++i)
 238         {
 239                 ConfigTag* tag = i->second;
 240                 std::string name = tag->getString("name");
 241                 if (name.empty())
 242                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
 243                 if (!ServerInstance->IsNick(name.c_str(), Limits.NickMax))
 244                         throw CoreException("<type:name> is invalid (value '" + name + "')");
 245                 if (oper_blocks.find(" " + name) != oper_blocks.end())
 246                         throw CoreException("Duplicate type block with name " + name + " at " + tag->getTagLocation());
 247
 248                 OperInfo* ifo = new OperInfo;
 249                 oper_blocks[" " + name] = ifo;
 250                 ifo->name = name;
 251                 ifo->type_block = tag;
 252
 253                 std::string classname;
 254                 irc::spacesepstream str(tag->getString("classes"));
 255                 while (str.GetToken(classname))
 256                 {
 257                         LocalIndex::iterator cls = operclass.find(classname);
 258                         if (cls == operclass.end())
 259                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 260                         ifo->class_blocks.push_back(cls->second);
 261                 }
 262         }
 263
 264         tags = ConfTags("oper");
 265         for(ConfigIter i = tags.first; i != tags.second; ++i)
 266         {
 267                 ConfigTag* tag = i->second;
 268
 269                 std::string name = tag->getString("name");
 270                 if (name.empty())
 271                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 272
 273                 std::string type = tag->getString("type");
 274                 OperIndex::iterator tblk = oper_blocks.find(" " + type);
 275                 if (tblk == oper_blocks.end())
 276                         throw CoreException("Oper block " + name + " has missing type " + type);
 277                 if (oper_blocks.find(name) != oper_blocks.end())
 278                         throw CoreException("Duplicate oper block with name " + name + " at " + tag->getTagLocation());
 279
 280                 OperInfo* ifo = new OperInfo;
 281                 ifo->name = type;
 282                 ifo->oper_block = tag;
 283                 ifo->type_block = tblk->second->type_block;
 284                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 285                 oper_blocks[name] = ifo;
 286         }
 287 }
 288
 289 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 290 {
 291         typedef std::map<std::string, ConnectClass*> ClassMap;
 292         ClassMap oldBlocksByMask;
 293         if (current)
 294         {
 295                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 296                 {
 297                         ConnectClass* c = *i;
 298                         if (c->name.substr(0, 8) != "unnamed-")
 299                         {
 300                                 oldBlocksByMask["n" + c->name] = c;
 301                         }
 302                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 303                         {
 304                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 305                                 typeMask += c->host;
 306                                 oldBlocksByMask[typeMask] = c;
 307                         }
 308                 }
 309         }
 310
 311         int blk_count = config_data.count("connect");
 312         if (blk_count == 0)
 313         {
 314                 // No connect blocks found; make a trivial default block
 315                 std::vector<KeyVal>* items;
 316                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 317                 items->push_back(std::make_pair("allow", "*"));
 318                 config_data.insert(std::make_pair("connect", tag));
 319                 blk_count = 1;
 320         }
 321
 322         Classes.resize(blk_count);
 323         std::map<std::string, int> names;
 324
 325         bool try_again = true;
 326         for(int tries=0; try_again; tries++)
 327         {
 328                 try_again = false;
 329                 ConfigTagList tags = ConfTags("connect");
 330                 int i=0;
 331                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 332                 {
 333                         ConfigTag* tag = it->second;
 334                         if (Classes[i])
 335                                 continue;
 336
 337                         ConnectClass* parent = NULL;
 338                         std::string parentName = tag->getString("parent");
 339                         if (!parentName.empty())
 340                         {
 341                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 342                                 if (parentIter == names.end())
 343                                 {
 344                                         try_again = true;
 345                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 346                                         if (tries >= blk_count)
 347                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 348                                         continue;
 349                                 }
 350                                 parent = Classes[parentIter->second];
 351                         }
 352
 353                         std::string name = tag->getString("name");
 354                         std::string mask, typeMask;
 355                         char type;
 356
 357                         if (tag->readString("allow", mask, false))
 358                         {
 359                                 type = CC_ALLOW;
 360                                 typeMask = 'a' + mask;
 361                         }
 362                         else if (tag->readString("deny", mask, false))
 363                         {
 364                                 type = CC_DENY;
 365                                 typeMask = 'd' + mask;
 366                         }
 367                         else if (!name.empty())
 368                         {
 369                                 type = CC_NAMED;
 370                                 mask = name;
 371                                 typeMask = 'n' + mask;
 372                         }
 373                         else
 374                         {
 375                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 376                         }
 377
 378                         if (name.empty())
 379                         {
 380                                 name = "unnamed-" + ConvToStr(i);
 381                         }
 382                         else
 383                         {
 384                                 typeMask = 'n' + name;
 385                         }
 386
 387                         if (names.find(name) != names.end())
 388                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 389                         names[name] = i;
 390
 391                         ConnectClass* me = parent ?
 392                                 new ConnectClass(tag, type, mask, *parent) :
 393                                 new ConnectClass(tag, type, mask);
 394
 395                         me->name = name;
 396
 397                         me->registration_timeout = tag->getInt("timeout", me->registration_timeout);
 398                         me->pingtime = tag->getInt("pingfreq", me->pingtime);
 399                         std::string sendq;
 400                         if (tag->readString("sendq", sendq))
 401                         {
 402                                 // attempt to guess a good hard/soft sendq from a single value
 403                                 long value = atol(sendq.c_str());
 404                                 if (value > 16384)
 405                                         me->softsendqmax = value / 16;
 406                                 else
 407                                         me->softsendqmax = value;
 408                                 me->hardsendqmax = value * 8;
 409                         }
 410                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 411                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 412                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 413                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 414                         me->commandrate = tag->getInt("commandrate", me->commandrate);
 415                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 416                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 417                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 418                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 419                         me->maxconnwarn = tag->getBool("maxconnwarn", me->maxconnwarn);
 420                         me->limit = tag->getInt("limit", me->limit);
 421
 422                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 423                         if (oldMask != oldBlocksByMask.end())
 424                         {
 425                                 ConnectClass* old = oldMask->second;
 426                                 oldBlocksByMask.erase(oldMask);
 427                                 old->Update(me);
 428                                 delete me;
 429                                 me = old;
 430                         }
 431                         Classes[i] = me;
 432                 }
 433         }
 434 }
 435
 436 /** Represents a deprecated configuration tag.
 437  */
 438 struct Deprecated
 439 {
 440         /** Tag name
 441          */
 442         const char* tag;
 443         /** Tag value
 444          */
 445         const char* value;
 446         /** Reason for deprecation
 447          */
 448         const char* reason;
 449 };
 450
 451 static const Deprecated ChangedConfig[] = {
 452         {"options", "hidelinks",                "has been moved to <security:hidelinks> as of 1.2a3"},
 453         {"options", "hidewhois",                "has been moved to <security:hidewhois> as of 1.2a3"},
 454         {"options", "userstats",                "has been moved to <security:userstats> as of 1.2a3"},
 455         {"options", "customversion",    "has been moved to <security:customversion> as of 1.2a3"},
 456         {"options", "hidesplits",               "has been moved to <security:hidesplits> as of 1.2a3"},
 457         {"options", "hidebans",         "has been moved to <security:hidebans> as of 1.2a3"},
 458         {"options", "hidekills",                "has been moved to <security:hidekills> as of 1.2a3"},
 459         {"options", "operspywhois",             "has been moved to <security:operspywhois> as of 1.2a3"},
 460         {"options", "announceinvites",  "has been moved to <security:announceinvites> as of 1.2a3"},
 461         {"options", "hidemodes",                "has been moved to <security:hidemodes> as of 1.2a3"},
 462         {"options", "maxtargets",               "has been moved to <security:maxtargets> as of 1.2a3"},
 463         {"options",     "nouserdns",            "has been moved to <performance:nouserdns> as of 1.2a3"},
 464         {"options",     "maxwho",               "has been moved to <performance:maxwho> as of 1.2a3"},
 465         {"options",     "softlimit",            "has been moved to <performance:softlimit> as of 1.2a3"},
 466         {"options", "somaxconn",                "has been moved to <performance:somaxconn> as of 1.2a3"},
 467         {"options", "netbuffersize",    "has been moved to <performance:netbuffersize> as of 1.2a3"},
 468         {"options", "maxwho",           "has been moved to <performance:maxwho> as of 1.2a3"},
 469         {"options",     "loglevel",             "1.2+ does not use the loglevel value. Please define <log> tags instead."},
 470         {"die",     "value",            "you need to reread your config"},
 471         {"bind",    "transport",                "has been moved to <bind:ssl> as of 2.0a1"},
 472         {"link",    "transport",                "has been moved to <link:ssl> as of 2.0a1"},
 473
 474 };
 475
 476 void ServerConfig::Fill()
 477 {
 478         ConfigTag* options = ConfValue("options");
 479         ConfigTag* security = ConfValue("security");
 480         if (sid.empty())
 481         {
 482                 ServerName = ConfValue("server")->getString("name");
 483                 sid = ConfValue("server")->getString("id");
 484                 ValidHost(ServerName, "<server:name>");
 485                 if (!sid.empty() && !ServerInstance->IsSID(sid))
 486                         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.");
 487         }
 488         else
 489         {
 490                 if (ServerName != ConfValue("server")->getString("name"))
 491                         throw CoreException("You must restart to change the server name or SID");
 492                 std::string nsid = ConfValue("server")->getString("id");
 493                 if (!nsid.empty() && nsid != sid)
 494                         throw CoreException("You must restart to change the server name or SID");
 495         }
 496         diepass = ConfValue("power")->getString("diepass");
 497         restartpass = ConfValue("power")->getString("restartpass");
 498         powerhash = ConfValue("power")->getString("hash");
 499         PrefixQuit = options->getString("prefixquit");
 500         SuffixQuit = options->getString("suffixquit");
 501         FixedQuit = options->getString("fixedquit");
 502         PrefixPart = options->getString("prefixpart");
 503         SuffixPart = options->getString("suffixpart");
 504         FixedPart = options->getString("fixedpart");
 505         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 506         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 507         MoronBanner = options->getString("moronbanner", "You're banned!");
 508         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 509         Network = ConfValue("server")->getString("network", "Network");
 510         AdminName = ConfValue("admin")->getString("name", "");
 511         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 512         AdminNick = ConfValue("admin")->getString("nick", "admin");
 513         ModPath = ConfValue("path")->getString("moduledir", MOD_PATH);
 514         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 515         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 516         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 517         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 518         UserStats = security->getString("userstats");
 519         CustomVersion = security->getString("customversion", Network + " IRCd");
 520         HideSplits = security->getBool("hidesplits");
 521         HideBans = security->getBool("hidebans");
 522         HideWhoisServer = security->getString("hidewhois");
 523         HideKillsServer = security->getString("hidekills");
 524         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 525         GenericOper = security->getBool("genericoper");
 526         NoUserDns = ConfValue("performance")->getBool("nouserdns");
 527         SyntaxHints = options->getBool("syntaxhints");
 528         CycleHosts = options->getBool("cyclehosts");
 529         CycleHostsFromUser = options->getBool("cyclehostsfromuser");
 530         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 531         FullHostInTopic = options->getBool("hostintopic");
 532         MaxTargets = security->getInt("maxtargets", 20);
 533         DefaultModes = options->getString("defaultmodes", "nt");
 534         PID = ConfValue("pid")->getString("file");
 535         WhoWasGroupSize = ConfValue("whowas")->getInt("groupsize");
 536         WhoWasMaxGroups = ConfValue("whowas")->getInt("maxgroups");
 537         WhoWasMaxKeep = ServerInstance->Duration(ConfValue("whowas")->getString("maxkeep"));
 538         MaxChans = ConfValue("channels")->getInt("users", 20);
 539         OperMaxChans = ConfValue("channels")->getInt("opers", 60);
 540         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 541         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 542         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 543         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 544         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 545         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 546         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 547         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 548         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 549         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 550         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 551         InvBypassModes = options->getBool("invitebypassmodes", true);
 552         NoSnoticeStack = options->getBool("nosnoticestack", false);
 553         WelcomeNotice = options->getBool("welcomenotice", true);
 554
 555         range(SoftLimit, 10, ServerInstance->SE->GetMaxFds(), ServerInstance->SE->GetMaxFds(), "<performance:softlimit>");
 556         range(MaxConn, 0, SOMAXCONN, SOMAXCONN, "<performance:somaxconn>");
 557         range(MaxTargets, 1, 31, 20, "<security:maxtargets>");
 558         range(NetBufferSize, 1024, 65534, 10240, "<performance:netbuffersize>");
 559         range(WhoWasGroupSize, 0, 10000, 10, "<whowas:groupsize>");
 560         range(WhoWasMaxGroups, 0, 1000000, 10240, "<whowas:maxgroups>");
 561         range(WhoWasMaxKeep, 3600, INT_MAX, 3600, "<whowas:maxkeep>");
 562
 563         ValidIP(DNSServer, "<dns:server>");
 564
 565         std::string defbind = options->getString("defaultbind");
 566         if (assign(defbind) == "ipv4")
 567         {
 568                 WildcardIPv6 = false;
 569         }
 570         else if (assign(defbind) == "ipv6")
 571         {
 572                 WildcardIPv6 = true;
 573         }
 574         else
 575         {
 576                 WildcardIPv6 = true;
 577                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 578                 if (socktest < 0)
 579                         WildcardIPv6 = false;
 580                 else
 581                         ServerInstance->SE->Close(socktest);
 582         }
 583         ConfigTagList tags = ConfTags("uline");
 584         for(ConfigIter i = tags.first; i != tags.second; ++i)
 585         {
 586                 ConfigTag* tag = i->second;
 587                 std::string server;
 588                 if (!tag->readString("server", server))
 589                         throw CoreException("<uline> tag missing server at " + tag->getTagLocation());
 590                 ulines[assign(server)] = tag->getBool("silent");
 591         }
 592
 593         tags = ConfTags("banlist");
 594         for(ConfigIter i = tags.first; i != tags.second; ++i)
 595         {
 596                 ConfigTag* tag = i->second;
 597                 std::string chan;
 598                 if (!tag->readString("chan", chan))
 599                         throw CoreException("<banlist> tag missing chan at " + tag->getTagLocation());
 600                 maxbans[chan] = tag->getInt("limit");
 601         }
 602
 603         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 604         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 605         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 606         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 607
 608         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 609         std::string modes = ConfValue("disabled")->getString("usermodes");
 610         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 611         {
 612                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException("Invalid usermode " + std::string(1, *p) + " was found.");
 613                 DisabledUModes[*p - 'A'] = 1;
 614         }
 615
 616         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 617         modes = ConfValue("disabled")->getString("chanmodes");
 618         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 619         {
 620                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException("Invalid chanmode " + std::string(1, *p) + " was found.");
 621                 DisabledCModes[*p - 'A'] = 1;
 622         }
 623
 624         memset(HideModeLists, 0, sizeof(HideModeLists));
 625         modes = ConfValue("security")->getString("hidemodes");
 626         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 627                 HideModeLists[(unsigned char) *p] = true;
 628
 629         std::string v = security->getString("announceinvites");
 630
 631         if (v == "ops")
 632                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 633         else if (v == "all")
 634                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 635         else if (v == "dynamic")
 636                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 637         else
 638                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 639
 640         v = security->getString("operspywhois");
 641         if (v == "splitmsg")
 642                 OperSpyWhois = SPYWHOIS_SPLITMSG;
 643         else if (v == "on" || v == "yes")
 644                 OperSpyWhois = SPYWHOIS_SINGLEMSG;
 645         else
 646                 OperSpyWhois = SPYWHOIS_NONE;
 647
 648         Limits.Finalise();
 649 }
 650
 651 // WARNING: it is not safe to use most of the codebase in this function, as it
 652 // will run in the config reader thread
 653 void ServerConfig::Read()
 654 {
 655         /* Load and parse the config file, if there are any errors then explode */
 656
 657         ParseStack stack(this);
 658         try
 659         {
 660                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 661         }
 662         catch (CoreException& err)
 663         {
 664                 valid = false;
 665                 errstr << err.GetReason();
 666         }
 667         if (valid)
 668         {
 669                 DNSServer = ConfValue("dns")->getString("server");
 670                 FindDNS(DNSServer);
 671         }
 672 }
 673
 674 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 675 {
 676         valid = true;
 677         if (old)
 678         {
 679                 /*
 680                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 681                  */
 682                 this->ServerName = old->ServerName;
 683                 this->sid = old->sid;
 684                 this->cmdline = old->cmdline;
 685         }
 686
 687         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 688         try
 689         {
 690                 for (int Index = 0; Index * sizeof(Deprecated) < sizeof(ChangedConfig); Index++)
 691                 {
 692                         std::string dummy;
 693                         ConfigTagList tags = ConfTags(ChangedConfig[Index].tag);
 694                         for(ConfigIter i = tags.first; i != tags.second; ++i)
 695                         {
 696                                 if (i->second->readString(ChangedConfig[Index].value, dummy, true))
 697                                         errstr << "Your configuration contains a deprecated value: <"
 698                                                 << ChangedConfig[Index].tag << ":" << ChangedConfig[Index].value << "> - " << ChangedConfig[Index].reason
 699                                                 << " (at " << i->second->getTagLocation() << ")\n";
 700                         }
 701                 }
 702
 703                 Fill();
 704
 705                 // Handle special items
 706                 CrossCheckOperClassType();
 707                 CrossCheckConnectBlocks(old);
 708         }
 709         catch (CoreException &ce)
 710         {
 711                 errstr << ce.GetReason();
 712         }
 713
 714         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 715         valid = errstr.str().empty();
 716
 717         // write once here, to try it out and make sure its ok
 718         if (valid)
 719                 ServerInstance->WritePID(this->PID);
 720
 721         if (old)
 722         {
 723                 // On first run, ports are bound later on
 724                 FailedPortList pl;
 725                 ServerInstance->BindPorts(pl);
 726                 if (pl.size())
 727                 {
 728                         errstr << "Not all your client ports could be bound.\nThe following port(s) failed to bind:\n";
 729
 730                         int j = 1;
 731                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 732                         {
 733                                 char buf[MAXBUF];
 734                                 snprintf(buf, MAXBUF, "%d.   Address: %s   Reason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 735                                 errstr << buf;
 736                         }
 737                 }
 738         }
 739
 740         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 741
 742         if (!valid)
 743                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "There were errors in your configuration file:");
 744
 745         while (errstr.good())
 746         {
 747                 std::string line;
 748                 getline(errstr, line, '\n');
 749                 if (line.empty())
 750                         continue;
 751                 // On startup, print out to console (still attached at this point)
 752                 if (!old)
 753                         printf("%s\n", line.c_str());
 754                 // If a user is rehashing, tell them directly
 755                 if (user)
 756                         user->SendText(":%s NOTICE %s :*** %s", ServerInstance->Config->ServerName.c_str(), user->nick.c_str(), line.c_str());
 757                 // Also tell opers
 758                 ServerInstance->SNO->WriteGlobalSno('a', line);
 759         }
 760
 761         errstr.clear();
 762         errstr.str(std::string());
 763
 764         // Re-parse our MOTD and RULES files for colors -- Justasic
 765         for (ClassVector::const_iterator it = this->Classes.begin(), it_end = this->Classes.end(); it != it_end; ++it)
 766         {
 767                 ConfigTag *tag = (*it)->config;
 768                 // Make sure our connection class allows motd colors
 769                 if(!tag->getBool("allowmotdcolors"))
 770                       continue;
 771
 772                 ConfigFileCache::iterator motdfile = this->Files.find(tag->getString("motd", "motd"));
 773                 ConfigFileCache::iterator rulesfile = this->Files.find(tag->getString("rules", "rules"));
 774
 775                 if(motdfile != this->Files.end())
 776                       this->ProcessColors(motdfile);
 777
 778                 if(rulesfile != this->Files.end())
 779                       this->ProcessColors(rulesfile);
 780         }
 781
 782         /* No old configuration -> initial boot, nothing more to do here */
 783         if (!old)
 784         {
 785                 if (!valid)
 786                 {
 787                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 788                 }
 789
 790                 return;
 791         }
 792
 793
 794         // If there were errors processing configuration, don't touch modules.
 795         if (!valid)
 796                 return;
 797
 798         ApplyModules(user);
 799
 800         if (user)
 801                 user->SendText(":%s NOTICE %s :*** Successfully rehashed server.",
 802                         ServerInstance->Config->ServerName.c_str(), user->nick.c_str());
 803         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 804 }
 805
 806 void ServerConfig::ApplyModules(User* user)
 807 {
 808         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
 809         if (whowas)
 810                 WhowasRequest(NULL, whowas, WhowasRequest::WHOWAS_PRUNE).Send();
 811
 812         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
 813         std::vector<std::string> added_modules;
 814         std::set<std::string> removed_modules(v.begin(), v.end());
 815
 816         ConfigTagList tags = ConfTags("module");
 817         for(ConfigIter i = tags.first; i != tags.second; ++i)
 818         {
 819                 ConfigTag* tag = i->second;
 820                 std::string name;
 821                 if (tag->readString("name", name))
 822                 {
 823                         // if this module is already loaded, the erase will succeed, so we need do nothing
 824                         // otherwise, we need to add the module (which will be done later)
 825                         if (removed_modules.erase(name) == 0)
 826                                 added_modules.push_back(name);
 827                 }
 828         }
 829
 830         if (ConfValue("options")->getBool("allowhalfop") && removed_modules.erase("m_halfop.so") == 0)
 831                 added_modules.push_back("m_halfop.so");
 832
 833         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 834         {
 835                 // Don't remove cmd_*.so, just remove m_*.so
 836                 if (removing->c_str()[0] == 'c')
 837                         continue;
 838                 Module* m = ServerInstance->Modules->Find(*removing);
 839                 if (m && ServerInstance->Modules->Unload(m))
 840                 {
 841                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
 842
 843                         if (user)
 844                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
 845                         else
 846                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
 847                 }
 848                 else
 849                 {
 850                         if (user)
 851                                 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());
 852                         else
 853                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
 854                 }
 855         }
 856
 857         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 858         {
 859                 if (ServerInstance->Modules->Load(adding->c_str()))
 860                 {
 861                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 862                         if (user)
 863                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
 864                         else
 865                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 866                 }
 867                 else
 868                 {
 869                         if (user)
 870                                 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());
 871                         else
 872                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 873                 }
 874         }
 875 }
 876
 877 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
 878 {
 879         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
 880 }
 881
 882 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 883 {
 884         ConfigTagList found = config_data.equal_range(tag);
 885         if (found.first == found.second)
 886                 return NULL;
 887         ConfigTag* rv = found.first->second;
 888         found.first++;
 889         if (found.first != found.second)
 890                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 891                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 892         return rv;
 893 }
 894
 895 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 896 {
 897         return config_data.equal_range(tag);
 898 }
 899
 900 /*
 901  * Replace all color codes from the special[] array to actual
 902  * color code chars using C++ style escape sequences. You
 903  * can append other chars to replace if you like -- Justasic
 904  */
 905 void ServerConfig::ProcessColors(ConfigFileCache::iterator &file)
 906 {
 907         static struct special_chars
 908         {
 909                 std::string character;
 910                 std::string replace;
 911                 special_chars(const std::string &c, const std::string &r) : character(c), replace(r) { }
 912         }
 913
 914         special[] = {
 915                 special_chars("\\002", "\002"),  // Bold
 916                 special_chars("\\037", "\037"),  // underline
 917                 special_chars("\\003", "\003"),  // Color
 918                 special_chars("\\017", "\017"), // Stop colors
 919                 special_chars("\\u", "\037"),    // Alias for underline
 920                 special_chars("\\b", "\002"),    // Alias for Bold
 921                 special_chars("\\x", "\017"),    // Alias for stop
 922                 special_chars("\\c", "\003"),    // Alias for color
 923                 special_chars("", "")
 924         };
 925
 926         for(file_cache::iterator it = file->second.begin(), it_end = file->second.end(); it != it_end; it++)
 927         {
 928                 std::string ret = *it;
 929                 for(int i = 0; special[i].character.empty() == false; ++i)
 930                 {
 931                         std::string::size_type pos = ret.find(special[i].character);
 932                         if(pos == std::string::npos) // Couldn't find the character, skip this line
 933                                 continue;
 934
 935                         if((pos > 0) && (ret[pos-1] == '\\') && (ret[pos] == '\\'))
 936                                 continue; // Skip double slashes.
 937
 938                         // Replace all our characters in the array
 939                         while(pos != std::string::npos)
 940                         {
 941                                 ret = ret.substr(0, pos) + special[i].replace + ret.substr(pos + special[i].character.size());
 942                                 pos = ret.find(special[i].character, pos + special[i].replace.size());
 943                         }
 944                 }
 945
 946                 // Replace double slashes with a single slash before we return
 947                 std::string::size_type pos = ret.find("\\\\");
 948                 while(pos != std::string::npos)
 949                 {
 950                         ret = ret.substr(0, pos) + "\\" + ret.substr(pos + 2);
 951                         pos = ret.find("\\\\", pos + 1);
 952                 }
 953                 *it = ret;
 954         }
 955 }
 956
 957 bool ServerConfig::FileExists(const char* file)
 958 {
 959         struct stat sb;
 960         if (stat(file, &sb) == -1)
 961                 return false;
 962
 963         if ((sb.st_mode & S_IFDIR) > 0)
 964                 return false;
 965
 966         FILE *input = fopen(file, "r");
 967         if (input == NULL)
 968                 return false;
 969         else
 970         {
 971                 fclose(input);
 972                 return true;
 973         }
 974 }
 975
 976 const char* ServerConfig::CleanFilename(const char* name)
 977 {
 978         const char* p = name + strlen(name);
 979         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
 980         return (p != name ? ++p : p);
 981 }
 982
 983 const std::string& ServerConfig::GetSID()
 984 {
 985         return sid;
 986 }
 987
 988 void ConfigReaderThread::Run()
 989 {
 990         Config->Read();
 991         done = true;
 992 }
 993
 994 void ConfigReaderThread::Finish()
 995 {
 996         ServerConfig* old = ServerInstance->Config;
 997         ServerInstance->Logs->Log("CONFIG",DEBUG,"Switching to new configuration...");
 998         ServerInstance->Config = this->Config;
 999         Config->Apply(old, TheUserUID);
1000
1001         if (Config->valid)
1002         {
1003                 /*
1004                  * Apply the changed configuration from the rehash.
1005                  *
1006                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
1007                  * thoroughly!!!
1008                  */
1009                 ServerInstance->XLines->CheckELines();
1010                 ServerInstance->XLines->ApplyLines();
1011                 ServerInstance->Res->Rehash();
1012                 ServerInstance->ResetMaxBans();
1013                 Config->ApplyDisabledCommands(Config->DisabledCommands);
1014                 User* user = ServerInstance->FindNick(TheUserUID);
1015                 FOREACH_MOD(I_OnRehash, OnRehash(user));
1016                 ServerInstance->BuildISupport();
1017
1018                 ServerInstance->Logs->CloseLogs();
1019                 ServerInstance->Logs->OpenFileLogs();
1020
1021                 if (Config->RawLog && !old->RawLog)
1022                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
1023
1024                 Config = old;
1025         }
1026         else
1027         {
1028                 // whoops, abort!
1029                 ServerInstance->Config = old;
1030         }
1031 }