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 "listmode.h"
  29 #include "exitcodes.h"
  30 #include "configparser.h"
  31 #include <iostream>
  32 #ifdef _WIN32
  33 #include <Iphlpapi.h>
  34 #pragma comment(lib, "Iphlpapi.lib")
  35 #endif
  36
  37 ServerConfig::ServerConfig()
  38 {
  39         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, 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 DeprecatedConfig
 439 {
 440         /** Tag name. */
 441         std::string tag;
 442
 443         /** Attribute key. */
 444         std::string key;
 445
 446         /** Attribute value. */
 447         std::string value;
 448
 449         /** Reason for deprecation. */
 450         std::string reason;
 451 };
 452
 453 static const DeprecatedConfig ChangedConfig[] = {
 454         { "bind",   "transport",   "",                 "has been moved to <bind:ssl> as of 2.0" },
 455         { "die",    "value",       "",                 "you need to reread your config" },
 456         { "link",   "autoconnect", "",                 "2.0+ does not use this attribute - define <autoconnect> tags instead" },
 457         { "link",   "transport",   "",                 "has been moved to <link:ssl> as of 2.0" },
 458         { "module", "name",        "m_chanprotect.so", "has been replaced with m_customprefix as of 2.2" },
 459         { "module", "name",        "m_halfop.so",      "has been replaced with m_customprefix as of 2.2" },
 460 };
 461
 462 void ServerConfig::Fill()
 463 {
 464         ConfigTag* options = ConfValue("options");
 465         ConfigTag* security = ConfValue("security");
 466         if (sid.empty())
 467         {
 468                 ServerName = ConfValue("server")->getString("name");
 469                 sid = ConfValue("server")->getString("id");
 470                 ValidHost(ServerName, "<server:name>");
 471                 if (!sid.empty() && !InspIRCd::IsSID(sid))
 472                         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.");
 473         }
 474         else
 475         {
 476                 if (ServerName != ConfValue("server")->getString("name"))
 477                         throw CoreException("You must restart to change the server name or SID");
 478                 std::string nsid = ConfValue("server")->getString("id");
 479                 if (!nsid.empty() && nsid != sid)
 480                         throw CoreException("You must restart to change the server name or SID");
 481         }
 482         diepass = ConfValue("power")->getString("diepass");
 483         restartpass = ConfValue("power")->getString("restartpass");
 484         powerhash = ConfValue("power")->getString("hash");
 485         PrefixQuit = options->getString("prefixquit");
 486         SuffixQuit = options->getString("suffixquit");
 487         FixedQuit = options->getString("fixedquit");
 488         PrefixPart = options->getString("prefixpart");
 489         SuffixPart = options->getString("suffixpart");
 490         FixedPart = options->getString("fixedpart");
 491         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 492         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 493         MoronBanner = options->getString("moronbanner", "You're banned!");
 494         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 495         Network = ConfValue("server")->getString("network", "Network");
 496         AdminName = ConfValue("admin")->getString("name", "");
 497         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 498         AdminNick = ConfValue("admin")->getString("nick", "admin");
 499         ModPath = ConfValue("path")->getString("moduledir", MOD_PATH);
 500         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 501         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 502         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 503         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 504         UserStats = security->getString("userstats");
 505         CustomVersion = security->getString("customversion", Network + " IRCd");
 506         HideSplits = security->getBool("hidesplits");
 507         HideBans = security->getBool("hidebans");
 508         HideWhoisServer = security->getString("hidewhois");
 509         HideKillsServer = security->getString("hidekills");
 510         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 511         GenericOper = security->getBool("genericoper");
 512         NoUserDns = ConfValue("performance")->getBool("nouserdns");
 513         SyntaxHints = options->getBool("syntaxhints");
 514         CycleHosts = options->getBool("cyclehosts");
 515         CycleHostsFromUser = options->getBool("cyclehostsfromuser");
 516         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 517         FullHostInTopic = options->getBool("hostintopic");
 518         MaxTargets = security->getInt("maxtargets", 20);
 519         DefaultModes = options->getString("defaultmodes", "nt");
 520         PID = ConfValue("pid")->getString("file");
 521         MaxChans = ConfValue("channels")->getInt("users", 20);
 522         OperMaxChans = ConfValue("channels")->getInt("opers", 60);
 523         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 524         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 525         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 526         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 527         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 528         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 529         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 530         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 531         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 532         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 533         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 534         InvBypassModes = options->getBool("invitebypassmodes", true);
 535         NoSnoticeStack = options->getBool("nosnoticestack", false);
 536
 537         range(SoftLimit, 10, ServerInstance->SE->GetMaxFds(), ServerInstance->SE->GetMaxFds(), "<performance:softlimit>");
 538         range(MaxConn, 0, SOMAXCONN, SOMAXCONN, "<performance:somaxconn>");
 539         range(MaxTargets, 1, 31, 20, "<security:maxtargets>");
 540         range(NetBufferSize, 1024, 65534, 10240, "<performance:netbuffersize>");
 541
 542         ValidIP(DNSServer, "<dns:server>");
 543
 544         std::string defbind = options->getString("defaultbind");
 545         if (assign(defbind) == "ipv4")
 546         {
 547                 WildcardIPv6 = false;
 548         }
 549         else if (assign(defbind) == "ipv6")
 550         {
 551                 WildcardIPv6 = true;
 552         }
 553         else
 554         {
 555                 WildcardIPv6 = true;
 556                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 557                 if (socktest < 0)
 558                         WildcardIPv6 = false;
 559                 else
 560                         ServerInstance->SE->Close(socktest);
 561         }
 562         ConfigTagList tags = ConfTags("uline");
 563         for(ConfigIter i = tags.first; i != tags.second; ++i)
 564         {
 565                 ConfigTag* tag = i->second;
 566                 std::string server;
 567                 if (!tag->readString("server", server))
 568                         throw CoreException("<uline> tag missing server at " + tag->getTagLocation());
 569                 ulines[assign(server)] = tag->getBool("silent");
 570         }
 571
 572         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 573         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 574         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 575         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 576
 577         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 578         std::string modes = ConfValue("disabled")->getString("usermodes");
 579         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 580         {
 581                 // Complain when the character is not a-z or A-Z
 582                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 583                         throw CoreException("Invalid usermode " + std::string(1, *p) + " was found.");
 584                 DisabledUModes[*p - 'A'] = 1;
 585         }
 586
 587         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 588         modes = ConfValue("disabled")->getString("chanmodes");
 589         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 590         {
 591                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 592                         throw CoreException("Invalid chanmode " + std::string(1, *p) + " was found.");
 593                 DisabledCModes[*p - 'A'] = 1;
 594         }
 595
 596         memset(HideModeLists, 0, sizeof(HideModeLists));
 597         modes = ConfValue("security")->getString("hidemodes");
 598         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 599                 HideModeLists[(unsigned char) *p] = true;
 600
 601         std::string v = security->getString("announceinvites");
 602
 603         if (v == "ops")
 604                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 605         else if (v == "all")
 606                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 607         else if (v == "dynamic")
 608                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 609         else
 610                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 611
 612         v = security->getString("operspywhois");
 613         if (v == "splitmsg")
 614                 OperSpyWhois = SPYWHOIS_SPLITMSG;
 615         else if (v == "on" || v == "yes")
 616                 OperSpyWhois = SPYWHOIS_SINGLEMSG;
 617         else
 618                 OperSpyWhois = SPYWHOIS_NONE;
 619 }
 620
 621 // WARNING: it is not safe to use most of the codebase in this function, as it
 622 // will run in the config reader thread
 623 void ServerConfig::Read()
 624 {
 625         /* Load and parse the config file, if there are any errors then explode */
 626
 627         ParseStack stack(this);
 628         try
 629         {
 630                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 631         }
 632         catch (CoreException& err)
 633         {
 634                 valid = false;
 635                 errstr << err.GetReason();
 636         }
 637         if (valid)
 638         {
 639                 DNSServer = ConfValue("dns")->getString("server");
 640                 FindDNS(DNSServer);
 641         }
 642 }
 643
 644 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 645 {
 646         valid = true;
 647         if (old)
 648         {
 649                 /*
 650                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 651                  */
 652                 this->ServerName = old->ServerName;
 653                 this->sid = old->sid;
 654                 this->cmdline = old->cmdline;
 655         }
 656
 657         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 658         try
 659         {
 660                 for (int index = 0; index * sizeof(DeprecatedConfig) < sizeof(ChangedConfig); index++)
 661                 {
 662                         std::string value;
 663                         ConfigTagList tags = ConfTags(ChangedConfig[index].tag);
 664                         for(ConfigIter i = tags.first; i != tags.second; ++i)
 665                         {
 666                                 if (i->second->readString(ChangedConfig[index].key, value, true)
 667                                         && (ChangedConfig[index].value.empty() || value == ChangedConfig[index].value))
 668                                 {
 669                                         errstr << "Your configuration contains a deprecated value: <"  << ChangedConfig[index].tag;
 670                                         if (ChangedConfig[index].value.empty())
 671                                         {
 672                                                 errstr << ':' << ChangedConfig[index].key;
 673                                         }
 674                                         else
 675                                         {
 676                                                 errstr << ' ' << ChangedConfig[index].key << "=\"" << ChangedConfig[index].value << "\"";
 677                                         }
 678                                         errstr << "> - " << ChangedConfig[index].reason << " (at " << i->second->getTagLocation() << ")\n";
 679                                 }
 680                         }
 681                 }
 682
 683                 Fill();
 684
 685                 // Handle special items
 686                 CrossCheckOperClassType();
 687                 CrossCheckConnectBlocks(old);
 688         }
 689         catch (CoreException &ce)
 690         {
 691                 errstr << ce.GetReason();
 692         }
 693
 694         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 695         valid = errstr.str().empty();
 696
 697         // write once here, to try it out and make sure its ok
 698         if (valid)
 699                 ServerInstance->WritePID(this->PID);
 700
 701         if (old)
 702         {
 703                 // On first run, ports are bound later on
 704                 FailedPortList pl;
 705                 ServerInstance->BindPorts(pl);
 706                 if (pl.size())
 707                 {
 708                         errstr << "Not all your client ports could be bound.\nThe following port(s) failed to bind:\n";
 709
 710                         int j = 1;
 711                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 712                         {
 713                                 char buf[MAXBUF];
 714                                 snprintf(buf, MAXBUF, "%d.   Address: %s   Reason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 715                                 errstr << buf;
 716                         }
 717                 }
 718         }
 719
 720         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 721
 722         if (!valid)
 723                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "There were errors in your configuration file:");
 724
 725         while (errstr.good())
 726         {
 727                 std::string line;
 728                 getline(errstr, line, '\n');
 729                 if (line.empty())
 730                         continue;
 731                 // On startup, print out to console (still attached at this point)
 732                 if (!old)
 733                         std::cout << line << std::endl;
 734                 // If a user is rehashing, tell them directly
 735                 if (user)
 736                         user->SendText(":%s NOTICE %s :*** %s", ServerInstance->Config->ServerName.c_str(), user->nick.c_str(), line.c_str());
 737                 // Also tell opers
 738                 ServerInstance->SNO->WriteGlobalSno('a', line);
 739         }
 740
 741         errstr.clear();
 742         errstr.str(std::string());
 743
 744         // Re-parse our MOTD and RULES files for colors -- Justasic
 745         for (ClassVector::const_iterator it = this->Classes.begin(), it_end = this->Classes.end(); it != it_end; ++it)
 746         {
 747                 ConfigTag *tag = (*it)->config;
 748                 // Make sure our connection class allows motd colors
 749                 if(!tag->getBool("allowmotdcolors"))
 750                       continue;
 751
 752                 ConfigFileCache::iterator file = this->Files.find(tag->getString("motd", "motd"));
 753                 if (file != this->Files.end())
 754                       InspIRCd::ProcessColors(file->second);
 755
 756                 file = this->Files.find(tag->getString("rules", "rules"));
 757                 if (file != this->Files.end())
 758                       InspIRCd::ProcessColors(file->second);
 759         }
 760
 761         /* No old configuration -> initial boot, nothing more to do here */
 762         if (!old)
 763         {
 764                 if (!valid)
 765                 {
 766                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 767                 }
 768
 769                 return;
 770         }
 771
 772
 773         // If there were errors processing configuration, don't touch modules.
 774         if (!valid)
 775                 return;
 776
 777         ApplyModules(user);
 778
 779         if (user)
 780                 user->SendText(":%s NOTICE %s :*** Successfully rehashed server.",
 781                         ServerInstance->Config->ServerName.c_str(), user->nick.c_str());
 782         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 783 }
 784
 785 void ServerConfig::ApplyModules(User* user)
 786 {
 787         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
 788         std::vector<std::string> added_modules;
 789         std::set<std::string> removed_modules(v.begin(), v.end());
 790
 791         ConfigTagList tags = ConfTags("module");
 792         for(ConfigIter i = tags.first; i != tags.second; ++i)
 793         {
 794                 ConfigTag* tag = i->second;
 795                 std::string name;
 796                 if (tag->readString("name", name))
 797                 {
 798                         // if this module is already loaded, the erase will succeed, so we need do nothing
 799                         // otherwise, we need to add the module (which will be done later)
 800                         if (removed_modules.erase(name) == 0)
 801                                 added_modules.push_back(name);
 802                 }
 803         }
 804
 805         if (ConfValue("options")->getBool("allowhalfop") && removed_modules.erase("m_halfop.so") == 0)
 806                 added_modules.push_back("m_halfop.so");
 807
 808         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 809         {
 810                 // Don't remove cmd_*.so, just remove m_*.so
 811                 if (removing->c_str()[0] == 'c')
 812                         continue;
 813                 Module* m = ServerInstance->Modules->Find(*removing);
 814                 if (m && ServerInstance->Modules->Unload(m))
 815                 {
 816                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
 817
 818                         if (user)
 819                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
 820                         else
 821                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
 822                 }
 823                 else
 824                 {
 825                         if (user)
 826                                 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());
 827                         else
 828                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
 829                 }
 830         }
 831
 832         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 833         {
 834                 if (ServerInstance->Modules->Load(adding->c_str()))
 835                 {
 836                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 837                         if (user)
 838                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
 839                         else
 840                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 841                 }
 842                 else
 843                 {
 844                         if (user)
 845                                 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());
 846                         else
 847                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 848                 }
 849         }
 850 }
 851
 852 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
 853 {
 854         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
 855 }
 856
 857 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 858 {
 859         ConfigTagList found = config_data.equal_range(tag);
 860         if (found.first == found.second)
 861                 return NULL;
 862         ConfigTag* rv = found.first->second;
 863         found.first++;
 864         if (found.first != found.second)
 865                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 866                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 867         return rv;
 868 }
 869
 870 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 871 {
 872         return config_data.equal_range(tag);
 873 }
 874
 875 bool ServerConfig::FileExists(const char* file)
 876 {
 877         struct stat sb;
 878         if (stat(file, &sb) == -1)
 879                 return false;
 880
 881         if ((sb.st_mode & S_IFDIR) > 0)
 882                 return false;
 883
 884         FILE *input = fopen(file, "r");
 885         if (input == NULL)
 886                 return false;
 887         else
 888         {
 889                 fclose(input);
 890                 return true;
 891         }
 892 }
 893
 894 const char* ServerConfig::CleanFilename(const char* name)
 895 {
 896         const char* p = name + strlen(name);
 897         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
 898         return (p != name ? ++p : p);
 899 }
 900
 901 const std::string& ServerConfig::GetSID()
 902 {
 903         return sid;
 904 }
 905
 906 void ConfigReaderThread::Run()
 907 {
 908         Config->Read();
 909         done = true;
 910 }
 911
 912 void ConfigReaderThread::Finish()
 913 {
 914         ServerConfig* old = ServerInstance->Config;
 915         ServerInstance->Logs->Log("CONFIG",DEBUG,"Switching to new configuration...");
 916         ServerInstance->Config = this->Config;
 917         Config->Apply(old, TheUserUID);
 918
 919         if (Config->valid)
 920         {
 921                 /*
 922                  * Apply the changed configuration from the rehash.
 923                  *
 924                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 925                  * thoroughly!!!
 926                  */
 927                 ServerInstance->XLines->CheckELines();
 928                 ServerInstance->XLines->ApplyLines();
 929                 ServerInstance->Res->Rehash();
 930                 ModeReference ban(NULL, "ban");
 931                 static_cast<ListModeBase*>(*ban)->DoRehash();
 932                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 933                 User* user = ServerInstance->FindNick(TheUserUID);
 934                 FOREACH_MOD(I_OnRehash, OnRehash(user));
 935                 ServerInstance->BuildISupport();
 936
 937                 ServerInstance->Logs->CloseLogs();
 938                 ServerInstance->Logs->OpenFileLogs();
 939
 940                 if (Config->RawLog && !old->RawLog)
 941                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 942
 943                 Config = old;
 944         }
 945         else
 946         {
 947                 // whoops, abort!
 948                 ServerInstance->Config = old;
 949         }
 950 }