src/configreader.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2007-2009 Robin Burchell <robin+git@viroteck.net>
   6  *   Copyright (C) 2006-2009 Dennis Friis <peavey@inspircd.org>
   7  *   Copyright (C) 2006-2008 Craig Edwards <craigedwards@brainbox.cc>
   8  *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
   9  *   Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
  10  *
  11  * This file is part of InspIRCd.  InspIRCd is free software: you can
  12  * redistribute it and/or modify it under the terms of the GNU General Public
  13  * License as published by the Free Software Foundation, version 2.
  14  *
  15  * This program is distributed in the hope that it will be useful, but WITHOUT
  16  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  17  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  18  * details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22  */
  23
  24
  25 #include "inspircd.h"
  26 #include <fstream>
  27 #include "xline.h"
  28 #include "exitcodes.h"
  29 #include "commands/cmd_whowas.h"
  30 #include "configparser.h"
  31 #include <iostream>
  32 #ifdef _WIN32
  33 #include <Iphlpapi.h>
  34 #pragma comment(lib, "Iphlpapi.lib")
  35 #endif
  36
  37 ServerConfig::ServerConfig()
  38 {
  39         WhoWasGroupSize = WhoWasMaxGroups = WhoWasMaxKeep = 0;
  40         RawLog = NoUserDns = HideBans = HideSplits = UndernetMsgPrefix = false;
  41         WildcardIPv6 = CycleHosts = InvBypassModes = true;
  42         dns_timeout = 5;
  43         MaxTargets = 20;
  44         NetBufferSize = 10240;
  45         SoftLimit = ServerInstance->SE->GetMaxFds();
  46         MaxConn = SOMAXCONN;
  47         MaxChans = 20;
  48         OperMaxChans = 30;
  49         c_ipv4_range = 32;
  50         c_ipv6_range = 128;
  51
  52         std::vector<KeyVal>* items;
  53         EmptyTag = ConfigTag::create("empty", "<auto>", 0, items);
  54 }
  55
  56 ServerConfig::~ServerConfig()
  57 {
  58         delete EmptyTag;
  59 }
  60
  61 void ServerConfig::Update005()
  62 {
  63         std::stringstream out(data005);
  64         std::vector<std::string> data;
  65         std::string token;
  66         while (out >> token)
  67                 data.push_back(token);
  68         sort(data.begin(), data.end());
  69
  70         std::string line5;
  71         isupport.clear();
  72         for(unsigned int i=0; i < data.size(); i++)
  73         {
  74                 token = data[i];
  75                 line5 = line5 + token + " ";
  76                 if (i % 13 == 12)
  77                 {
  78                         line5.append(":are supported by this server");
  79                         isupport.push_back(line5);
  80                         line5.clear();
  81                 }
  82         }
  83         if (!line5.empty())
  84         {
  85                 line5.append(":are supported by this server");
  86                 isupport.push_back(line5);
  87         }
  88 }
  89
  90 void ServerConfig::Send005(User* user)
  91 {
  92         for (std::vector<std::string>::iterator line = ServerInstance->Config->isupport.begin(); line != ServerInstance->Config->isupport.end(); line++)
  93                 user->WriteNumeric(RPL_ISUPPORT, "%s %s", user->nick.c_str(), line->c_str());
  94 }
  95
  96 template<typename T, typename V>
  97 static void range(T& value, V min, V max, V def, const char* msg)
  98 {
  99         if (value >= (T)min && value <= (T)max)
 100                 return;
 101         ServerInstance->Logs->Log("CONFIG", DEFAULT,
 102                 "WARNING: %s value of %ld is not between %ld and %ld; set to %ld.",
 103                 msg, (long)value, (long)min, (long)max, (long)def);
 104         value = def;
 105 }
 106
 107
 108 static void ValidIP(const std::string& ip, const std::string& key)
 109 {
 110         irc::sockets::sockaddrs dummy;
 111         if (!irc::sockets::aptosa(ip, 0, dummy))
 112                 throw CoreException("The value of "+key+" is not an IP address");
 113 }
 114
 115 static void ValidHost(const std::string& p, const std::string& msg)
 116 {
 117         int num_dots = 0;
 118         if (p.empty() || p[0] == '.')
 119                 throw CoreException("The value of "+msg+" is not a valid hostname");
 120         for (unsigned int i=0;i < p.length();i++)
 121         {
 122                 switch (p[i])
 123                 {
 124                         case ' ':
 125                                 throw CoreException("The value of "+msg+" is not a valid hostname");
 126                         case '.':
 127                                 num_dots++;
 128                         break;
 129                 }
 130         }
 131         if (num_dots == 0)
 132                 throw CoreException("The value of "+msg+" is not a valid hostname");
 133 }
 134
 135 bool ServerConfig::ApplyDisabledCommands(const std::string& data)
 136 {
 137         std::stringstream dcmds(data);
 138         std::string thiscmd;
 139
 140         /* Enable everything first */
 141         for (Commandtable::iterator x = ServerInstance->Parser->cmdlist.begin(); x != ServerInstance->Parser->cmdlist.end(); x++)
 142                 x->second->Disable(false);
 143
 144         /* Now disable all the ones which the user wants disabled */
 145         while (dcmds >> thiscmd)
 146         {
 147                 Commandtable::iterator cm = ServerInstance->Parser->cmdlist.find(thiscmd);
 148                 if (cm != ServerInstance->Parser->cmdlist.end())
 149                 {
 150                         cm->second->Disable(true);
 151                 }
 152         }
 153         return true;
 154 }
 155
 156 static void FindDNS(std::string& server)
 157 {
 158         if (!server.empty())
 159                 return;
 160 #ifdef _WIN32
 161         // attempt to look up their nameserver from the system
 162         ServerInstance->Logs->Log("CONFIG",DEFAULT,"WARNING: <dns:server> not defined, attempting to find a working server in the system settings...");
 163
 164         PFIXED_INFO pFixedInfo;
 165         DWORD dwBufferSize = sizeof(FIXED_INFO);
 166         pFixedInfo = (PFIXED_INFO) HeapAlloc(GetProcessHeap(), 0, sizeof(FIXED_INFO));
 167
 168         if(pFixedInfo)
 169         {
 170                 if (GetNetworkParams(pFixedInfo, &dwBufferSize) == ERROR_BUFFER_OVERFLOW) {
 171                         HeapFree(GetProcessHeap(), 0, pFixedInfo);
 172                         pFixedInfo = (PFIXED_INFO) HeapAlloc(GetProcessHeap(), 0, dwBufferSize);
 173                 }
 174
 175                 if(pFixedInfo) {
 176                         if (GetNetworkParams(pFixedInfo, &dwBufferSize) == NO_ERROR)
 177                                 server = pFixedInfo->DnsServerList.IpAddress.String;
 178
 179                         HeapFree(GetProcessHeap(), 0, pFixedInfo);
 180                 }
 181
 182                 if(!server.empty())
 183                 {
 184                         ServerInstance->Logs->Log("CONFIG",DEFAULT,"<dns:server> set to '%s' as first active resolver in the system settings.", server.c_str());
 185                         return;
 186                 }
 187         }
 188
 189         ServerInstance->Logs->Log("CONFIG",DEFAULT,"No viable nameserver found! Defaulting to nameserver '127.0.0.1'!");
 190 #else
 191         // attempt to look up their nameserver from /etc/resolv.conf
 192         ServerInstance->Logs->Log("CONFIG",DEFAULT,"WARNING: <dns:server> not defined, attempting to find working server in /etc/resolv.conf...");
 193
 194         std::ifstream resolv("/etc/resolv.conf");
 195
 196         while (resolv >> server)
 197         {
 198                 if (server == "nameserver")
 199                 {
 200                         resolv >> server;
 201                         if (server.find_first_not_of("0123456789.") == std::string::npos)
 202                         {
 203                                 ServerInstance->Logs->Log("CONFIG",DEFAULT,"<dns:server> set to '%s' as first resolver in /etc/resolv.conf.",server.c_str());
 204                                 return;
 205                         }
 206                 }
 207         }
 208
 209         ServerInstance->Logs->Log("CONFIG",DEFAULT,"/etc/resolv.conf contains no viable nameserver entries! Defaulting to nameserver '127.0.0.1'!");
 210 #endif
 211         server = "127.0.0.1";
 212 }
 213
 214 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
 215 {
 216         ConfigTagList tags = conf->ConfTags(tag);
 217         for(ConfigIter i = tags.first; i != tags.second; ++i)
 218         {
 219                 ConfigTag* ctag = i->second;
 220                 std::string mask;
 221                 if (!ctag->readString(key, mask))
 222                         throw CoreException("<"+tag+":"+key+"> missing at " + ctag->getTagLocation());
 223                 std::string reason = ctag->getString("reason", "<Config>");
 224                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
 225                 if (!ServerInstance->XLines->AddLine(xl, NULL))
 226                         delete xl;
 227         }
 228 }
 229
 230 typedef std::map<std::string, ConfigTag*> LocalIndex;
 231 void ServerConfig::CrossCheckOperClassType()
 232 {
 233         LocalIndex operclass;
 234         ConfigTagList tags = ConfTags("class");
 235         for(ConfigIter i = tags.first; i != tags.second; ++i)
 236         {
 237                 ConfigTag* tag = i->second;
 238                 std::string name = tag->getString("name");
 239                 if (name.empty())
 240                         throw CoreException("<class:name> missing from tag at " + tag->getTagLocation());
 241                 if (operclass.find(name) != operclass.end())
 242                         throw CoreException("Duplicate class block with name " + name + " at " + tag->getTagLocation());
 243                 operclass[name] = tag;
 244         }
 245         tags = ConfTags("type");
 246         for(ConfigIter i = tags.first; i != tags.second; ++i)
 247         {
 248                 ConfigTag* tag = i->second;
 249                 std::string name = tag->getString("name");
 250                 if (name.empty())
 251                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
 252                 if (!ServerInstance->IsNick(name.c_str(), Limits.NickMax))
 253                         throw CoreException("<type:name> is invalid (value '" + name + "')");
 254                 if (oper_blocks.find(" " + name) != oper_blocks.end())
 255                         throw CoreException("Duplicate type block with name " + name + " at " + tag->getTagLocation());
 256
 257                 OperInfo* ifo = new OperInfo;
 258                 oper_blocks[" " + name] = ifo;
 259                 ifo->name = name;
 260                 ifo->type_block = tag;
 261
 262                 std::string classname;
 263                 irc::spacesepstream str(tag->getString("classes"));
 264                 while (str.GetToken(classname))
 265                 {
 266                         LocalIndex::iterator cls = operclass.find(classname);
 267                         if (cls == operclass.end())
 268                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 269                         ifo->class_blocks.push_back(cls->second);
 270                 }
 271         }
 272
 273         tags = ConfTags("oper");
 274         for(ConfigIter i = tags.first; i != tags.second; ++i)
 275         {
 276                 ConfigTag* tag = i->second;
 277
 278                 std::string name = tag->getString("name");
 279                 if (name.empty())
 280                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 281
 282                 std::string type = tag->getString("type");
 283                 OperIndex::iterator tblk = oper_blocks.find(" " + type);
 284                 if (tblk == oper_blocks.end())
 285                         throw CoreException("Oper block " + name + " has missing type " + type);
 286                 if (oper_blocks.find(name) != oper_blocks.end())
 287                         throw CoreException("Duplicate oper block with name " + name + " at " + tag->getTagLocation());
 288
 289                 OperInfo* ifo = new OperInfo;
 290                 ifo->name = type;
 291                 ifo->oper_block = tag;
 292                 ifo->type_block = tblk->second->type_block;
 293                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 294                 oper_blocks[name] = ifo;
 295         }
 296 }
 297
 298 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 299 {
 300         typedef std::map<std::string, ConnectClass*> ClassMap;
 301         ClassMap oldBlocksByMask;
 302         if (current)
 303         {
 304                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 305                 {
 306                         ConnectClass* c = *i;
 307                         if (c->name.substr(0, 8) != "unnamed-")
 308                         {
 309                                 oldBlocksByMask["n" + c->name] = c;
 310                         }
 311                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 312                         {
 313                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 314                                 typeMask += c->host;
 315                                 oldBlocksByMask[typeMask] = c;
 316                         }
 317                 }
 318         }
 319
 320         int blk_count = config_data.count("connect");
 321         if (blk_count == 0)
 322         {
 323                 // No connect blocks found; make a trivial default block
 324                 std::vector<KeyVal>* items;
 325                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 326                 items->push_back(std::make_pair("allow", "*"));
 327                 config_data.insert(std::make_pair("connect", tag));
 328                 blk_count = 1;
 329         }
 330
 331         Classes.resize(blk_count);
 332         std::map<std::string, int> names;
 333
 334         bool try_again = true;
 335         for(int tries=0; try_again; tries++)
 336         {
 337                 try_again = false;
 338                 ConfigTagList tags = ConfTags("connect");
 339                 int i=0;
 340                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 341                 {
 342                         ConfigTag* tag = it->second;
 343                         if (Classes[i])
 344                                 continue;
 345
 346                         ConnectClass* parent = NULL;
 347                         std::string parentName = tag->getString("parent");
 348                         if (!parentName.empty())
 349                         {
 350                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 351                                 if (parentIter == names.end())
 352                                 {
 353                                         try_again = true;
 354                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 355                                         if (tries >= blk_count)
 356                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 357                                         continue;
 358                                 }
 359                                 parent = Classes[parentIter->second];
 360                         }
 361
 362                         std::string name = tag->getString("name");
 363                         std::string mask, typeMask;
 364                         char type;
 365
 366                         if (tag->readString("allow", mask, false))
 367                         {
 368                                 type = CC_ALLOW;
 369                                 typeMask = 'a' + mask;
 370                         }
 371                         else if (tag->readString("deny", mask, false))
 372                         {
 373                                 type = CC_DENY;
 374                                 typeMask = 'd' + mask;
 375                         }
 376                         else if (!name.empty())
 377                         {
 378                                 type = CC_NAMED;
 379                                 mask = name;
 380                                 typeMask = 'n' + mask;
 381                         }
 382                         else
 383                         {
 384                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 385                         }
 386
 387                         if (name.empty())
 388                         {
 389                                 name = "unnamed-" + ConvToStr(i);
 390                         }
 391                         else
 392                         {
 393                                 typeMask = 'n' + name;
 394                         }
 395
 396                         if (names.find(name) != names.end())
 397                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 398                         names[name] = i;
 399
 400                         ConnectClass* me = parent ?
 401                                 new ConnectClass(tag, type, mask, *parent) :
 402                                 new ConnectClass(tag, type, mask);
 403
 404                         me->name = name;
 405
 406                         me->registration_timeout = tag->getInt("timeout", me->registration_timeout);
 407                         me->pingtime = tag->getInt("pingfreq", me->pingtime);
 408                         std::string sendq;
 409                         if (tag->readString("sendq", sendq))
 410                         {
 411                                 // attempt to guess a good hard/soft sendq from a single value
 412                                 long value = atol(sendq.c_str());
 413                                 if (value > 16384)
 414                                         me->softsendqmax = value / 16;
 415                                 else
 416                                         me->softsendqmax = value;
 417                                 me->hardsendqmax = value * 8;
 418                         }
 419                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 420                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 421                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 422                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 423                         me->commandrate = tag->getInt("commandrate", me->commandrate);
 424                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 425                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 426                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 427                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 428                         me->maxconnwarn = tag->getBool("maxconnwarn", me->maxconnwarn);
 429                         me->limit = tag->getInt("limit", me->limit);
 430
 431                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 432                         if (oldMask != oldBlocksByMask.end())
 433                         {
 434                                 ConnectClass* old = oldMask->second;
 435                                 oldBlocksByMask.erase(oldMask);
 436                                 old->Update(me);
 437                                 delete me;
 438                                 me = old;
 439                         }
 440                         Classes[i] = me;
 441                 }
 442         }
 443 }
 444
 445 /** Represents a deprecated configuration tag.
 446  */
 447 struct Deprecated
 448 {
 449         /** Tag name
 450          */
 451         const char* tag;
 452         /** Tag value
 453          */
 454         const char* value;
 455         /** Reason for deprecation
 456          */
 457         const char* reason;
 458 };
 459
 460 static const Deprecated ChangedConfig[] = {
 461         {"options", "hidelinks",                "has been moved to <security:hidelinks> as of 1.2a3"},
 462         {"options", "hidewhois",                "has been moved to <security:hidewhois> as of 1.2a3"},
 463         {"options", "userstats",                "has been moved to <security:userstats> as of 1.2a3"},
 464         {"options", "customversion",    "has been moved to <security:customversion> as of 1.2a3"},
 465         {"options", "hidesplits",               "has been moved to <security:hidesplits> as of 1.2a3"},
 466         {"options", "hidebans",         "has been moved to <security:hidebans> as of 1.2a3"},
 467         {"options", "hidekills",                "has been moved to <security:hidekills> as of 1.2a3"},
 468         {"options", "operspywhois",             "has been moved to <security:operspywhois> as of 1.2a3"},
 469         {"options", "announceinvites",  "has been moved to <security:announceinvites> as of 1.2a3"},
 470         {"options", "hidemodes",                "has been moved to <security:hidemodes> as of 1.2a3"},
 471         {"options", "maxtargets",               "has been moved to <security:maxtargets> as of 1.2a3"},
 472         {"options",     "nouserdns",            "has been moved to <performance:nouserdns> as of 1.2a3"},
 473         {"options",     "maxwho",               "has been moved to <performance:maxwho> as of 1.2a3"},
 474         {"options",     "softlimit",            "has been moved to <performance:softlimit> as of 1.2a3"},
 475         {"options", "somaxconn",                "has been moved to <performance:somaxconn> as of 1.2a3"},
 476         {"options", "netbuffersize",    "has been moved to <performance:netbuffersize> as of 1.2a3"},
 477         {"options", "maxwho",           "has been moved to <performance:maxwho> as of 1.2a3"},
 478         {"options",     "loglevel",             "1.2+ does not use the loglevel value. Please define <log> tags instead."},
 479         {"die",     "value",            "you need to reread your config"},
 480         {"bind",    "transport",                "has been moved to <bind:ssl> as of 2.0a1"},
 481         {"link",    "transport",                "has been moved to <link:ssl> as of 2.0a1"},
 482         {"link",        "autoconnect",          "2.0+ does not use the autoconnect value. Please define <autoconnect> tags instead."},
 483 };
 484
 485 void ServerConfig::Fill()
 486 {
 487         ConfigTag* options = ConfValue("options");
 488         ConfigTag* security = ConfValue("security");
 489         if (sid.empty())
 490         {
 491                 ServerName = ConfValue("server")->getString("name");
 492                 sid = ConfValue("server")->getString("id");
 493                 ValidHost(ServerName, "<server:name>");
 494                 if (!sid.empty() && !ServerInstance->IsSID(sid))
 495                         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.");
 496         }
 497         else
 498         {
 499                 if (ServerName != ConfValue("server")->getString("name"))
 500                         throw CoreException("You must restart to change the server name or SID");
 501                 std::string nsid = ConfValue("server")->getString("id");
 502                 if (!nsid.empty() && nsid != sid)
 503                         throw CoreException("You must restart to change the server name or SID");
 504         }
 505         diepass = ConfValue("power")->getString("diepass");
 506         restartpass = ConfValue("power")->getString("restartpass");
 507         powerhash = ConfValue("power")->getString("hash");
 508         PrefixQuit = options->getString("prefixquit");
 509         SuffixQuit = options->getString("suffixquit");
 510         FixedQuit = options->getString("fixedquit");
 511         PrefixPart = options->getString("prefixpart");
 512         SuffixPart = options->getString("suffixpart");
 513         FixedPart = options->getString("fixedpart");
 514         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 515         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 516         MoronBanner = options->getString("moronbanner", "You're banned!");
 517         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 518         Network = ConfValue("server")->getString("network", "Network");
 519         AdminName = ConfValue("admin")->getString("name", "");
 520         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 521         AdminNick = ConfValue("admin")->getString("nick", "admin");
 522         ModPath = ConfValue("path")->getString("moduledir", MOD_PATH);
 523         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 524         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 525         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 526         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 527         UserStats = security->getString("userstats");
 528         CustomVersion = security->getString("customversion", Network + " IRCd");
 529         HideSplits = security->getBool("hidesplits");
 530         HideBans = security->getBool("hidebans");
 531         HideWhoisServer = security->getString("hidewhois");
 532         HideKillsServer = security->getString("hidekills");
 533         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 534         GenericOper = security->getBool("genericoper");
 535         NoUserDns = ConfValue("performance")->getBool("nouserdns");
 536         SyntaxHints = options->getBool("syntaxhints");
 537         CycleHosts = options->getBool("cyclehosts");
 538         CycleHostsFromUser = options->getBool("cyclehostsfromuser");
 539         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 540         FullHostInTopic = options->getBool("hostintopic");
 541         MaxTargets = security->getInt("maxtargets", 20);
 542         DefaultModes = options->getString("defaultmodes", "nt");
 543         PID = ConfValue("pid")->getString("file");
 544         WhoWasGroupSize = ConfValue("whowas")->getInt("groupsize");
 545         WhoWasMaxGroups = ConfValue("whowas")->getInt("maxgroups");
 546         WhoWasMaxKeep = ServerInstance->Duration(ConfValue("whowas")->getString("maxkeep"));
 547         MaxChans = ConfValue("channels")->getInt("users", 20);
 548         OperMaxChans = ConfValue("channels")->getInt("opers", 60);
 549         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 550         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 551         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 552         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 553         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 554         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 555         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 556         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 557         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 558         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 559         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 560         InvBypassModes = options->getBool("invitebypassmodes", true);
 561         NoSnoticeStack = options->getBool("nosnoticestack", false);
 562         WelcomeNotice = options->getBool("welcomenotice", true);
 563
 564         range(SoftLimit, 10, ServerInstance->SE->GetMaxFds(), ServerInstance->SE->GetMaxFds(), "<performance:softlimit>");
 565         if (ConfValue("performance")->getBool("limitsomaxconn", true))
 566                 range(MaxConn, 0, SOMAXCONN, SOMAXCONN, "<performance:somaxconn>");
 567         range(MaxTargets, 1, 31, 20, "<security:maxtargets>");
 568         range(NetBufferSize, 1024, 65534, 10240, "<performance:netbuffersize>");
 569         range(WhoWasGroupSize, 0, 10000, 10, "<whowas:groupsize>");
 570         range(WhoWasMaxGroups, 0, 1000000, 10240, "<whowas:maxgroups>");
 571         range(WhoWasMaxKeep, 3600, INT_MAX, 3600, "<whowas:maxkeep>");
 572
 573         ValidIP(DNSServer, "<dns:server>");
 574
 575         std::string defbind = options->getString("defaultbind");
 576         if (assign(defbind) == "ipv4")
 577         {
 578                 WildcardIPv6 = false;
 579         }
 580         else if (assign(defbind) == "ipv6")
 581         {
 582                 WildcardIPv6 = true;
 583         }
 584         else
 585         {
 586                 WildcardIPv6 = true;
 587                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 588                 if (socktest < 0)
 589                         WildcardIPv6 = false;
 590                 else
 591                         ServerInstance->SE->Close(socktest);
 592         }
 593         ConfigTagList tags = ConfTags("uline");
 594         for(ConfigIter i = tags.first; i != tags.second; ++i)
 595         {
 596                 ConfigTag* tag = i->second;
 597                 std::string server;
 598                 if (!tag->readString("server", server))
 599                         throw CoreException("<uline> tag missing server at " + tag->getTagLocation());
 600                 ulines[assign(server)] = tag->getBool("silent");
 601         }
 602
 603         tags = ConfTags("banlist");
 604         for(ConfigIter i = tags.first; i != tags.second; ++i)
 605         {
 606                 ConfigTag* tag = i->second;
 607                 std::string chan;
 608                 if (!tag->readString("chan", chan))
 609                         throw CoreException("<banlist> tag missing chan at " + tag->getTagLocation());
 610                 maxbans[chan] = tag->getInt("limit");
 611         }
 612
 613         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 614         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 615         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 616         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 617
 618         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 619         std::string modes = ConfValue("disabled")->getString("usermodes");
 620         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 621         {
 622                 // Complain when the character is not a-z or A-Z
 623                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 624                         throw CoreException("Invalid usermode " + std::string(1, *p) + " was found.");
 625                 DisabledUModes[*p - 'A'] = 1;
 626         }
 627
 628         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 629         modes = ConfValue("disabled")->getString("chanmodes");
 630         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 631         {
 632                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 633                         throw CoreException("Invalid chanmode " + std::string(1, *p) + " was found.");
 634                 DisabledCModes[*p - 'A'] = 1;
 635         }
 636
 637         memset(HideModeLists, 0, sizeof(HideModeLists));
 638         modes = ConfValue("security")->getString("hidemodes");
 639         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 640                 HideModeLists[(unsigned char) *p] = true;
 641
 642         std::string v = security->getString("announceinvites");
 643
 644         if (v == "ops")
 645                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 646         else if (v == "all")
 647                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 648         else if (v == "dynamic")
 649                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 650         else
 651                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 652
 653         v = security->getString("operspywhois");
 654         if (v == "splitmsg")
 655                 OperSpyWhois = SPYWHOIS_SPLITMSG;
 656         else if (v == "on" || v == "yes")
 657                 OperSpyWhois = SPYWHOIS_SINGLEMSG;
 658         else
 659                 OperSpyWhois = SPYWHOIS_NONE;
 660 }
 661
 662 // WARNING: it is not safe to use most of the codebase in this function, as it
 663 // will run in the config reader thread
 664 void ServerConfig::Read()
 665 {
 666         /* Load and parse the config file, if there are any errors then explode */
 667
 668         ParseStack stack(this);
 669         try
 670         {
 671                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 672         }
 673         catch (CoreException& err)
 674         {
 675                 valid = false;
 676                 errstr << err.GetReason();
 677         }
 678         if (valid)
 679         {
 680                 DNSServer = ConfValue("dns")->getString("server");
 681                 FindDNS(DNSServer);
 682         }
 683 }
 684
 685 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 686 {
 687         valid = true;
 688         if (old)
 689         {
 690                 /*
 691                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 692                  */
 693                 this->ServerName = old->ServerName;
 694                 this->sid = old->sid;
 695                 this->cmdline = old->cmdline;
 696         }
 697
 698         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 699         try
 700         {
 701                 for (int Index = 0; Index * sizeof(Deprecated) < sizeof(ChangedConfig); Index++)
 702                 {
 703                         std::string dummy;
 704                         ConfigTagList tags = ConfTags(ChangedConfig[Index].tag);
 705                         for(ConfigIter i = tags.first; i != tags.second; ++i)
 706                         {
 707                                 if (i->second->readString(ChangedConfig[Index].value, dummy, true))
 708                                         errstr << "Your configuration contains a deprecated value: <"
 709                                                 << ChangedConfig[Index].tag << ":" << ChangedConfig[Index].value << "> - " << ChangedConfig[Index].reason
 710                                                 << " (at " << i->second->getTagLocation() << ")\n";
 711                         }
 712                 }
 713
 714                 Fill();
 715
 716                 // Handle special items
 717                 CrossCheckOperClassType();
 718                 CrossCheckConnectBlocks(old);
 719         }
 720         catch (CoreException &ce)
 721         {
 722                 errstr << ce.GetReason();
 723         }
 724
 725         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 726         valid = errstr.str().empty();
 727
 728         // write once here, to try it out and make sure its ok
 729         if (valid)
 730                 ServerInstance->WritePID(this->PID);
 731
 732         if (old)
 733         {
 734                 // On first run, ports are bound later on
 735                 FailedPortList pl;
 736                 ServerInstance->BindPorts(pl);
 737                 if (pl.size())
 738                 {
 739                         errstr << "Not all your client ports could be bound.\nThe following port(s) failed to bind:\n";
 740
 741                         int j = 1;
 742                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 743                         {
 744                                 char buf[MAXBUF];
 745                                 snprintf(buf, MAXBUF, "%d.   Address: %s   Reason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 746                                 errstr << buf;
 747                         }
 748                 }
 749         }
 750
 751         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 752
 753         if (!valid)
 754         {
 755                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "There were errors in your configuration file:");
 756                 Classes.clear();
 757         }
 758
 759         while (errstr.good())
 760         {
 761                 std::string line;
 762                 getline(errstr, line, '\n');
 763                 if (line.empty())
 764                         continue;
 765                 // On startup, print out to console (still attached at this point)
 766                 if (!old)
 767                         std::cout << line << std::endl;
 768                 // If a user is rehashing, tell them directly
 769                 if (user)
 770                         user->SendText(":%s NOTICE %s :*** %s", ServerInstance->Config->ServerName.c_str(), user->nick.c_str(), line.c_str());
 771                 // Also tell opers
 772                 ServerInstance->SNO->WriteGlobalSno('a', line);
 773         }
 774
 775         errstr.clear();
 776         errstr.str(std::string());
 777
 778         // Re-parse our MOTD and RULES files for colors -- Justasic
 779         for (ClassVector::const_iterator it = this->Classes.begin(), it_end = this->Classes.end(); it != it_end; ++it)
 780         {
 781                 ConfigTag *tag = (*it)->config;
 782                 // Make sure our connection class allows motd colors
 783                 if(!tag->getBool("allowmotdcolors"))
 784                       continue;
 785
 786                 ConfigFileCache::iterator file = this->Files.find(tag->getString("motd", "motd"));
 787                 if (file != this->Files.end())
 788                       InspIRCd::ProcessColors(file->second);
 789
 790                 file = this->Files.find(tag->getString("rules", "rules"));
 791                 if (file != this->Files.end())
 792                       InspIRCd::ProcessColors(file->second);
 793         }
 794
 795         /* No old configuration -> initial boot, nothing more to do here */
 796         if (!old)
 797         {
 798                 if (!valid)
 799                 {
 800                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 801                 }
 802
 803                 return;
 804         }
 805
 806
 807         // If there were errors processing configuration, don't touch modules.
 808         if (!valid)
 809                 return;
 810
 811         ApplyModules(user);
 812
 813         if (user)
 814                 user->SendText(":%s NOTICE %s :*** Successfully rehashed server.",
 815                         ServerInstance->Config->ServerName.c_str(), user->nick.c_str());
 816         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 817 }
 818
 819 void ServerConfig::ApplyModules(User* user)
 820 {
 821         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
 822         if (whowas)
 823                 WhowasRequest(NULL, whowas, WhowasRequest::WHOWAS_PRUNE).Send();
 824
 825         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
 826         std::vector<std::string> added_modules;
 827         std::set<std::string> removed_modules(v.begin(), v.end());
 828
 829         ConfigTagList tags = ConfTags("module");
 830         for(ConfigIter i = tags.first; i != tags.second; ++i)
 831         {
 832                 ConfigTag* tag = i->second;
 833                 std::string name;
 834                 if (tag->readString("name", name))
 835                 {
 836                         // if this module is already loaded, the erase will succeed, so we need do nothing
 837                         // otherwise, we need to add the module (which will be done later)
 838                         if (removed_modules.erase(name) == 0)
 839                                 added_modules.push_back(name);
 840                 }
 841         }
 842
 843         if (ConfValue("options")->getBool("allowhalfop") && removed_modules.erase("m_halfop.so") == 0)
 844                 added_modules.push_back("m_halfop.so");
 845
 846         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 847         {
 848                 // Don't remove cmd_*.so, just remove m_*.so
 849                 if (removing->c_str()[0] == 'c')
 850                         continue;
 851                 Module* m = ServerInstance->Modules->Find(*removing);
 852                 if (m && ServerInstance->Modules->Unload(m))
 853                 {
 854                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
 855
 856                         if (user)
 857                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
 858                         else
 859                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
 860                 }
 861                 else
 862                 {
 863                         if (user)
 864                                 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());
 865                         else
 866                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
 867                 }
 868         }
 869
 870         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 871         {
 872                 if (ServerInstance->Modules->Load(adding->c_str()))
 873                 {
 874                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 875                         if (user)
 876                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
 877                         else
 878                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 879                 }
 880                 else
 881                 {
 882                         if (user)
 883                                 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());
 884                         else
 885                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 886                 }
 887         }
 888 }
 889
 890 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
 891 {
 892         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
 893 }
 894
 895 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 896 {
 897         ConfigTagList found = config_data.equal_range(tag);
 898         if (found.first == found.second)
 899                 return EmptyTag;
 900         ConfigTag* rv = found.first->second;
 901         found.first++;
 902         if (found.first != found.second)
 903                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 904                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 905         return rv;
 906 }
 907
 908 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 909 {
 910         return config_data.equal_range(tag);
 911 }
 912
 913 bool ServerConfig::FileExists(const char* file)
 914 {
 915         struct stat sb;
 916         if (stat(file, &sb) == -1)
 917                 return false;
 918
 919         if ((sb.st_mode & S_IFDIR) > 0)
 920                 return false;
 921
 922         FILE *input = fopen(file, "r");
 923         if (input == NULL)
 924                 return false;
 925         else
 926         {
 927                 fclose(input);
 928                 return true;
 929         }
 930 }
 931
 932 const char* ServerConfig::CleanFilename(const char* name)
 933 {
 934         const char* p = name + strlen(name);
 935         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
 936         return (p != name ? ++p : p);
 937 }
 938
 939 const std::string& ServerConfig::GetSID()
 940 {
 941         return sid;
 942 }
 943
 944 void ConfigReaderThread::Run()
 945 {
 946         Config->Read();
 947         done = true;
 948 }
 949
 950 void ConfigReaderThread::Finish()
 951 {
 952         ServerConfig* old = ServerInstance->Config;
 953         ServerInstance->Logs->Log("CONFIG",DEBUG,"Switching to new configuration...");
 954         ServerInstance->Config = this->Config;
 955         Config->Apply(old, TheUserUID);
 956
 957         if (Config->valid)
 958         {
 959                 /*
 960                  * Apply the changed configuration from the rehash.
 961                  *
 962                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 963                  * thoroughly!!!
 964                  */
 965                 ServerInstance->XLines->CheckELines();
 966                 ServerInstance->XLines->ApplyLines();
 967                 ServerInstance->Res->Rehash();
 968                 ServerInstance->ResetMaxBans();
 969                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 970                 User* user = ServerInstance->FindNick(TheUserUID);
 971                 FOREACH_MOD(I_OnRehash, OnRehash(user));
 972                 ServerInstance->BuildISupport();
 973
 974                 ServerInstance->Logs->CloseLogs();
 975                 ServerInstance->Logs->OpenFileLogs();
 976
 977                 if (Config->RawLog && !old->RawLog)
 978                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 979
 980                 Config = old;
 981         }
 982         else
 983         {
 984                 // whoops, abort!
 985                 ServerInstance->Config = old;
 986         }
 987 }