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
  32 ServerConfig::ServerConfig()
  33 {
  34         WhoWasGroupSize = WhoWasMaxGroups = WhoWasMaxKeep = 0;
  35         RawLog = NoUserDns = HideBans = HideSplits = UndernetMsgPrefix = false;
  36         WildcardIPv6 = CycleHosts = InvBypassModes = true;
  37         dns_timeout = 5;
  38         MaxTargets = 20;
  39         NetBufferSize = 10240;
  40         SoftLimit = ServerInstance->SE->GetMaxFds();
  41         MaxConn = SOMAXCONN;
  42         MaxChans = 20;
  43         OperMaxChans = 30;
  44         c_ipv4_range = 32;
  45         c_ipv6_range = 128;
  46 }
  47
  48 void ServerConfig::Update005()
  49 {
  50         std::stringstream out(data005);
  51         std::vector<std::string> data;
  52         std::string token;
  53         while (out >> token)
  54                 data.push_back(token);
  55         sort(data.begin(), data.end());
  56
  57         std::string line5;
  58         isupport.clear();
  59         for(unsigned int i=0; i < data.size(); i++)
  60         {
  61                 token = data[i];
  62                 line5 = line5 + token + " ";
  63                 if (i % 13 == 12)
  64                 {
  65                         line5.append(":are supported by this server");
  66                         isupport.push_back(line5);
  67                         line5.clear();
  68                 }
  69         }
  70         if (!line5.empty())
  71         {
  72                 line5.append(":are supported by this server");
  73                 isupport.push_back(line5);
  74         }
  75 }
  76
  77 void ServerConfig::Send005(User* user)
  78 {
  79         for (std::vector<std::string>::iterator line = ServerInstance->Config->isupport.begin(); line != ServerInstance->Config->isupport.end(); line++)
  80                 user->WriteNumeric(RPL_ISUPPORT, "%s %s", user->nick.c_str(), line->c_str());
  81 }
  82
  83 template<typename T, typename V>
  84 static void range(T& value, V min, V max, V def, const char* msg)
  85 {
  86         if (value >= (T)min && value <= (T)max)
  87                 return;
  88         ServerInstance->Logs->Log("CONFIG", DEFAULT,
  89                 "WARNING: %s value of %ld is not between %ld and %ld; set to %ld.",
  90                 msg, (long)value, (long)min, (long)max, (long)def);
  91         value = def;
  92 }
  93
  94
  95 static void ValidIP(const std::string& ip, const std::string& key)
  96 {
  97         irc::sockets::sockaddrs dummy;
  98         if (!irc::sockets::aptosa(ip, 0, dummy))
  99                 throw CoreException("The value of "+key+" is not an IP address");
 100 }
 101
 102 static void ValidHost(const std::string& p, const std::string& msg)
 103 {
 104         int num_dots = 0;
 105         if (p.empty() || p[0] == '.')
 106                 throw CoreException("The value of "+msg+" is not a valid hostname");
 107         for (unsigned int i=0;i < p.length();i++)
 108         {
 109                 switch (p[i])
 110                 {
 111                         case ' ':
 112                                 throw CoreException("The value of "+msg+" is not a valid hostname");
 113                         case '.':
 114                                 num_dots++;
 115                         break;
 116                 }
 117         }
 118         if (num_dots == 0)
 119                 throw CoreException("The value of "+msg+" is not a valid hostname");
 120 }
 121
 122 bool ServerConfig::ApplyDisabledCommands(const std::string& data)
 123 {
 124         std::stringstream dcmds(data);
 125         std::string thiscmd;
 126
 127         /* Enable everything first */
 128         for (Commandtable::iterator x = ServerInstance->Parser->cmdlist.begin(); x != ServerInstance->Parser->cmdlist.end(); x++)
 129                 x->second->Disable(false);
 130
 131         /* Now disable all the ones which the user wants disabled */
 132         while (dcmds >> thiscmd)
 133         {
 134                 Commandtable::iterator cm = ServerInstance->Parser->cmdlist.find(thiscmd);
 135                 if (cm != ServerInstance->Parser->cmdlist.end())
 136                 {
 137                         cm->second->Disable(true);
 138                 }
 139         }
 140         return true;
 141 }
 142
 143 #ifdef WINDOWS
 144 // Note: the windows validator is in win32wrapper.cpp
 145 void FindDNS(std::string& server);
 146 #else
 147 static void FindDNS(std::string& server)
 148 {
 149         if (!server.empty())
 150                 return;
 151
 152         // attempt to look up their nameserver from /etc/resolv.conf
 153         ServerInstance->Logs->Log("CONFIG",DEFAULT,"WARNING: <dns:server> not defined, attempting to find working server in /etc/resolv.conf...");
 154
 155         std::ifstream resolv("/etc/resolv.conf");
 156
 157         while (resolv >> server)
 158         {
 159                 if (server == "nameserver")
 160                 {
 161                         resolv >> server;
 162                         if (server.find_first_not_of("0123456789.") == std::string::npos)
 163                         {
 164                                 ServerInstance->Logs->Log("CONFIG",DEFAULT,"<dns:server> set to '%s' as first resolver in /etc/resolv.conf.",server.c_str());
 165                                 return;
 166                         }
 167                 }
 168         }
 169
 170         ServerInstance->Logs->Log("CONFIG",DEFAULT,"/etc/resolv.conf contains no viable nameserver entries! Defaulting to nameserver '127.0.0.1'!");
 171         server = "127.0.0.1";
 172 }
 173 #endif
 174
 175 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
 176 {
 177         ConfigTagList tags = conf->ConfTags(tag);
 178         for(ConfigIter i = tags.first; i != tags.second; ++i)
 179         {
 180                 ConfigTag* ctag = i->second;
 181                 std::string mask;
 182                 if (!ctag->readString(key, mask))
 183                         throw CoreException("<"+tag+":"+key+"> missing at " + ctag->getTagLocation());
 184                 std::string reason = ctag->getString("reason", "<Config>");
 185                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
 186                 if (!ServerInstance->XLines->AddLine(xl, NULL))
 187                         delete xl;
 188         }
 189 }
 190
 191 typedef std::map<std::string, ConfigTag*> LocalIndex;
 192 void ServerConfig::CrossCheckOperClassType()
 193 {
 194         LocalIndex operclass;
 195         ConfigTagList tags = ConfTags("class");
 196         for(ConfigIter i = tags.first; i != tags.second; ++i)
 197         {
 198                 ConfigTag* tag = i->second;
 199                 std::string name = tag->getString("name");
 200                 if (name.empty())
 201                         throw CoreException("<class:name> missing from tag at " + tag->getTagLocation());
 202                 if (operclass.find(name) != operclass.end())
 203                         throw CoreException("Duplicate class block with name " + name + " at " + tag->getTagLocation());
 204                 operclass[name] = tag;
 205         }
 206         tags = ConfTags("type");
 207         for(ConfigIter i = tags.first; i != tags.second; ++i)
 208         {
 209                 ConfigTag* tag = i->second;
 210                 std::string name = tag->getString("name");
 211                 if (name.empty())
 212                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
 213                 if (!ServerInstance->IsNick(name.c_str(), Limits.NickMax))
 214                         throw CoreException("<type:name> is invalid (value '" + name + "')");
 215                 if (oper_blocks.find(" " + name) != oper_blocks.end())
 216                         throw CoreException("Duplicate type block with name " + name + " at " + tag->getTagLocation());
 217
 218                 OperInfo* ifo = new OperInfo;
 219                 oper_blocks[" " + name] = ifo;
 220                 ifo->name = name;
 221                 ifo->type_block = tag;
 222
 223                 std::string classname;
 224                 irc::spacesepstream str(tag->getString("classes"));
 225                 while (str.GetToken(classname))
 226                 {
 227                         LocalIndex::iterator cls = operclass.find(classname);
 228                         if (cls == operclass.end())
 229                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 230                         ifo->class_blocks.push_back(cls->second);
 231                 }
 232         }
 233
 234         tags = ConfTags("oper");
 235         for(ConfigIter i = tags.first; i != tags.second; ++i)
 236         {
 237                 ConfigTag* tag = i->second;
 238
 239                 std::string name = tag->getString("name");
 240                 if (name.empty())
 241                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 242
 243                 std::string type = tag->getString("type");
 244                 OperIndex::iterator tblk = oper_blocks.find(" " + type);
 245                 if (tblk == oper_blocks.end())
 246                         throw CoreException("Oper block " + name + " has missing type " + type);
 247                 if (oper_blocks.find(name) != oper_blocks.end())
 248                         throw CoreException("Duplicate oper block with name " + name + " at " + tag->getTagLocation());
 249
 250                 OperInfo* ifo = new OperInfo;
 251                 ifo->name = type;
 252                 ifo->oper_block = tag;
 253                 ifo->type_block = tblk->second->type_block;
 254                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 255                 oper_blocks[name] = ifo;
 256         }
 257 }
 258
 259 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 260 {
 261         typedef std::map<std::string, ConnectClass*> ClassMap;
 262         ClassMap oldBlocksByMask;
 263         if (current)
 264         {
 265                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 266                 {
 267                         ConnectClass* c = *i;
 268                         if (c->name.substr(0, 8) != "unnamed-")
 269                         {
 270                                 oldBlocksByMask["n" + c->name] = c;
 271                         }
 272                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 273                         {
 274                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 275                                 typeMask += c->host;
 276                                 oldBlocksByMask[typeMask] = c;
 277                         }
 278                 }
 279         }
 280
 281         int blk_count = config_data.count("connect");
 282         if (blk_count == 0)
 283         {
 284                 // No connect blocks found; make a trivial default block
 285                 std::vector<KeyVal>* items;
 286                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 287                 items->push_back(std::make_pair("allow", "*"));
 288                 config_data.insert(std::make_pair("connect", tag));
 289                 blk_count = 1;
 290         }
 291
 292         Classes.resize(blk_count);
 293         std::map<std::string, int> names;
 294
 295         bool try_again = true;
 296         for(int tries=0; try_again; tries++)
 297         {
 298                 try_again = false;
 299                 ConfigTagList tags = ConfTags("connect");
 300                 int i=0;
 301                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 302                 {
 303                         ConfigTag* tag = it->second;
 304                         if (Classes[i])
 305                                 continue;
 306
 307                         ConnectClass* parent = NULL;
 308                         std::string parentName = tag->getString("parent");
 309                         if (!parentName.empty())
 310                         {
 311                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 312                                 if (parentIter == names.end())
 313                                 {
 314                                         try_again = true;
 315                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 316                                         if (tries >= blk_count)
 317                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 318                                         continue;
 319                                 }
 320                                 parent = Classes[parentIter->second];
 321                         }
 322
 323                         std::string name = tag->getString("name");
 324                         std::string mask, typeMask;
 325                         char type;
 326
 327                         if (tag->readString("allow", mask, false))
 328                         {
 329                                 type = CC_ALLOW;
 330                                 typeMask = 'a' + mask;
 331                         }
 332                         else if (tag->readString("deny", mask, false))
 333                         {
 334                                 type = CC_DENY;
 335                                 typeMask = 'd' + mask;
 336                         }
 337                         else if (!name.empty())
 338                         {
 339                                 type = CC_NAMED;
 340                                 mask = name;
 341                                 typeMask = 'n' + mask;
 342                         }
 343                         else
 344                         {
 345                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 346                         }
 347
 348                         if (name.empty())
 349                         {
 350                                 name = "unnamed-" + ConvToStr(i);
 351                         }
 352                         else
 353                         {
 354                                 typeMask = 'n' + name;
 355                         }
 356
 357                         if (names.find(name) != names.end())
 358                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 359                         names[name] = i;
 360
 361                         ConnectClass* me = parent ?
 362                                 new ConnectClass(tag, type, mask, *parent) :
 363                                 new ConnectClass(tag, type, mask);
 364
 365                         me->name = name;
 366
 367                         me->registration_timeout = tag->getInt("timeout", me->registration_timeout);
 368                         me->pingtime = tag->getInt("pingfreq", me->pingtime);
 369                         std::string sendq;
 370                         if (tag->readString("sendq", sendq))
 371                         {
 372                                 // attempt to guess a good hard/soft sendq from a single value
 373                                 long value = atol(sendq.c_str());
 374                                 if (value > 16384)
 375                                         me->softsendqmax = value / 16;
 376                                 else
 377                                         me->softsendqmax = value;
 378                                 me->hardsendqmax = value * 8;
 379                         }
 380                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 381                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 382                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 383                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 384                         me->commandrate = tag->getInt("commandrate", me->commandrate);
 385                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 386                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 387                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 388                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 389                         me->maxconnwarn = tag->getBool("maxconnwarn", me->maxconnwarn);
 390                         me->limit = tag->getInt("limit", me->limit);
 391
 392                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 393                         if (oldMask != oldBlocksByMask.end())
 394                         {
 395                                 ConnectClass* old = oldMask->second;
 396                                 oldBlocksByMask.erase(oldMask);
 397                                 old->Update(me);
 398                                 delete me;
 399                                 me = old;
 400                         }
 401                         Classes[i] = me;
 402                 }
 403         }
 404 }
 405
 406 /** Represents a deprecated configuration tag.
 407  */
 408 struct Deprecated
 409 {
 410         /** Tag name
 411          */
 412         const char* tag;
 413         /** Tag value
 414          */
 415         const char* value;
 416         /** Reason for deprecation
 417          */
 418         const char* reason;
 419 };
 420
 421 static const Deprecated ChangedConfig[] = {
 422         {"options", "hidelinks",                "has been moved to <security:hidelinks> as of 1.2a3"},
 423         {"options", "hidewhois",                "has been moved to <security:hidewhois> as of 1.2a3"},
 424         {"options", "userstats",                "has been moved to <security:userstats> as of 1.2a3"},
 425         {"options", "customversion",    "has been moved to <security:customversion> as of 1.2a3"},
 426         {"options", "hidesplits",               "has been moved to <security:hidesplits> as of 1.2a3"},
 427         {"options", "hidebans",         "has been moved to <security:hidebans> as of 1.2a3"},
 428         {"options", "hidekills",                "has been moved to <security:hidekills> as of 1.2a3"},
 429         {"options", "operspywhois",             "has been moved to <security:operspywhois> as of 1.2a3"},
 430         {"options", "announceinvites",  "has been moved to <security:announceinvites> as of 1.2a3"},
 431         {"options", "hidemodes",                "has been moved to <security:hidemodes> as of 1.2a3"},
 432         {"options", "maxtargets",               "has been moved to <security:maxtargets> as of 1.2a3"},
 433         {"options",     "nouserdns",            "has been moved to <performance:nouserdns> as of 1.2a3"},
 434         {"options",     "maxwho",               "has been moved to <performance:maxwho> as of 1.2a3"},
 435         {"options",     "softlimit",            "has been moved to <performance:softlimit> as of 1.2a3"},
 436         {"options", "somaxconn",                "has been moved to <performance:somaxconn> as of 1.2a3"},
 437         {"options", "netbuffersize",    "has been moved to <performance:netbuffersize> as of 1.2a3"},
 438         {"options", "maxwho",           "has been moved to <performance:maxwho> as of 1.2a3"},
 439         {"options",     "loglevel",             "1.2+ does not use the loglevel value. Please define <log> tags instead."},
 440         {"die",     "value",            "you need to reread your config"},
 441         {"bind",    "transport",                "has been moved to <bind:ssl> as of 2.0a1"},
 442         {"link",    "transport",                "has been moved to <link:ssl> as of 2.0a1"},
 443
 444 };
 445
 446 void ServerConfig::Fill()
 447 {
 448         ConfigTag* options = ConfValue("options");
 449         ConfigTag* security = ConfValue("security");
 450         if (sid.empty())
 451         {
 452                 ServerName = ConfValue("server")->getString("name");
 453                 sid = ConfValue("server")->getString("id");
 454                 ValidHost(ServerName, "<server:name>");
 455                 if (!sid.empty() && !ServerInstance->IsSID(sid))
 456                         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.");
 457         }
 458         else
 459         {
 460                 if (ServerName != ConfValue("server")->getString("name"))
 461                         throw CoreException("You must restart to change the server name or SID");
 462                 std::string nsid = ConfValue("server")->getString("id");
 463                 if (!nsid.empty() && nsid != sid)
 464                         throw CoreException("You must restart to change the server name or SID");
 465         }
 466         diepass = ConfValue("power")->getString("diepass");
 467         restartpass = ConfValue("power")->getString("restartpass");
 468         powerhash = ConfValue("power")->getString("hash");
 469         PrefixQuit = options->getString("prefixquit");
 470         SuffixQuit = options->getString("suffixquit");
 471         FixedQuit = options->getString("fixedquit");
 472         PrefixPart = options->getString("prefixpart");
 473         SuffixPart = options->getString("suffixpart");
 474         FixedPart = options->getString("fixedpart");
 475         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 476         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 477         MoronBanner = options->getString("moronbanner", "You're banned!");
 478         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 479         Network = ConfValue("server")->getString("network", "Network");
 480         AdminName = ConfValue("admin")->getString("name", "");
 481         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 482         AdminNick = ConfValue("admin")->getString("nick", "admin");
 483         ModPath = ConfValue("path")->getString("moduledir", MOD_PATH);
 484         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 485         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 486         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 487         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 488         UserStats = security->getString("userstats");
 489         CustomVersion = security->getString("customversion", Network + " IRCd");
 490         HideSplits = security->getBool("hidesplits");
 491         HideBans = security->getBool("hidebans");
 492         HideWhoisServer = security->getString("hidewhois");
 493         HideKillsServer = security->getString("hidekills");
 494         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 495         GenericOper = security->getBool("genericoper");
 496         NoUserDns = ConfValue("performance")->getBool("nouserdns");
 497         SyntaxHints = options->getBool("syntaxhints");
 498         CycleHosts = options->getBool("cyclehosts");
 499         CycleHostsFromUser = options->getBool("cyclehostsfromuser");
 500         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 501         FullHostInTopic = options->getBool("hostintopic");
 502         MaxTargets = security->getInt("maxtargets", 20);
 503         DefaultModes = options->getString("defaultmodes", "nt");
 504         PID = ConfValue("pid")->getString("file");
 505         WhoWasGroupSize = ConfValue("whowas")->getInt("groupsize");
 506         WhoWasMaxGroups = ConfValue("whowas")->getInt("maxgroups");
 507         WhoWasMaxKeep = ServerInstance->Duration(ConfValue("whowas")->getString("maxkeep"));
 508         MaxChans = ConfValue("channels")->getInt("users", 20);
 509         OperMaxChans = ConfValue("channels")->getInt("opers", 60);
 510         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 511         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 512         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 513         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 514         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 515         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 516         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 517         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 518         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 519         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 520         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 521         InvBypassModes = options->getBool("invitebypassmodes", true);
 522         NoSnoticeStack = options->getBool("nosnoticestack", false);
 523         WelcomeNotice = options->getBool("welcomenotice", true);
 524
 525         range(SoftLimit, 10, ServerInstance->SE->GetMaxFds(), ServerInstance->SE->GetMaxFds(), "<performance:softlimit>");
 526         range(MaxConn, 0, SOMAXCONN, SOMAXCONN, "<performance:somaxconn>");
 527         range(MaxTargets, 1, 31, 20, "<security:maxtargets>");
 528         range(NetBufferSize, 1024, 65534, 10240, "<performance:netbuffersize>");
 529         range(WhoWasGroupSize, 0, 10000, 10, "<whowas:groupsize>");
 530         range(WhoWasMaxGroups, 0, 1000000, 10240, "<whowas:maxgroups>");
 531         range(WhoWasMaxKeep, 3600, INT_MAX, 3600, "<whowas:maxkeep>");
 532
 533         ValidIP(DNSServer, "<dns:server>");
 534
 535         std::string defbind = options->getString("defaultbind");
 536         if (assign(defbind) == "ipv4")
 537         {
 538                 WildcardIPv6 = false;
 539         }
 540         else if (assign(defbind) == "ipv6")
 541         {
 542                 WildcardIPv6 = true;
 543         }
 544         else
 545         {
 546                 WildcardIPv6 = true;
 547                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 548                 if (socktest < 0)
 549                         WildcardIPv6 = false;
 550                 else
 551                         ServerInstance->SE->Close(socktest);
 552         }
 553         ConfigTagList tags = ConfTags("uline");
 554         for(ConfigIter i = tags.first; i != tags.second; ++i)
 555         {
 556                 ConfigTag* tag = i->second;
 557                 std::string server;
 558                 if (!tag->readString("server", server))
 559                         throw CoreException("<uline> tag missing server at " + tag->getTagLocation());
 560                 ulines[assign(server)] = tag->getBool("silent");
 561         }
 562
 563         tags = ConfTags("banlist");
 564         for(ConfigIter i = tags.first; i != tags.second; ++i)
 565         {
 566                 ConfigTag* tag = i->second;
 567                 std::string chan;
 568                 if (!tag->readString("chan", chan))
 569                         throw CoreException("<banlist> tag missing chan at " + tag->getTagLocation());
 570                 maxbans[chan] = tag->getInt("limit");
 571         }
 572
 573         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 574         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 575         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 576         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 577
 578         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 579         std::string modes = ConfValue("disabled")->getString("usermodes");
 580         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 581         {
 582                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid usermode ")+(char)*p+" was found.");
 583                 DisabledUModes[*p - 'A'] = 1;
 584         }
 585
 586         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 587         modes = ConfValue("disabled")->getString("chanmodes");
 588         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 589         {
 590                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid chanmode ")+(char)*p+" was found.");
 591                 DisabledCModes[*p - 'A'] = 1;
 592         }
 593
 594         memset(HideModeLists, 0, sizeof(HideModeLists));
 595         modes = ConfValue("security")->getString("hidemodes");
 596         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 597                 HideModeLists[(unsigned char) *p] = true;
 598
 599         std::string v = security->getString("announceinvites");
 600
 601         if (v == "ops")
 602                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 603         else if (v == "all")
 604                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 605         else if (v == "dynamic")
 606                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 607         else
 608                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 609
 610         v = security->getString("operspywhois");
 611         if (v == "splitmsg")
 612                 OperSpyWhois = SPYWHOIS_SPLITMSG;
 613         else if (v == "on" || v == "yes")
 614                 OperSpyWhois = SPYWHOIS_SINGLEMSG;
 615         else
 616                 OperSpyWhois = SPYWHOIS_NONE;
 617
 618         Limits.Finalise();
 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(Deprecated) < sizeof(ChangedConfig); Index++)
 661                 {
 662                         std::string dummy;
 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].value, dummy, true))
 667                                         errstr << "Your configuration contains a deprecated value: <"
 668                                                 << ChangedConfig[Index].tag << ":" << ChangedConfig[Index].value << "> - " << ChangedConfig[Index].reason
 669                                                 << " (at " << i->second->getTagLocation() << ")\n";
 670                         }
 671                 }
 672
 673                 Fill();
 674
 675                 // Handle special items
 676                 CrossCheckOperClassType();
 677                 CrossCheckConnectBlocks(old);
 678         }
 679         catch (CoreException &ce)
 680         {
 681                 errstr << ce.GetReason();
 682         }
 683
 684         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 685         valid = errstr.str().empty();
 686
 687         // write once here, to try it out and make sure its ok
 688         if (valid)
 689                 ServerInstance->WritePID(this->PID);
 690
 691         if (old)
 692         {
 693                 // On first run, ports are bound later on
 694                 FailedPortList pl;
 695                 ServerInstance->BindPorts(pl);
 696                 if (pl.size())
 697                 {
 698                         errstr << "Not all your client ports could be bound.\nThe following port(s) failed to bind:\n";
 699
 700                         int j = 1;
 701                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 702                         {
 703                                 char buf[MAXBUF];
 704                                 snprintf(buf, MAXBUF, "%d.   Address: %s   Reason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 705                                 errstr << buf;
 706                         }
 707                 }
 708         }
 709
 710         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 711
 712         if (!valid)
 713                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "There were errors in your configuration file:");
 714
 715         while (errstr.good())
 716         {
 717                 std::string line;
 718                 getline(errstr, line, '\n');
 719                 if (line.empty())
 720                         continue;
 721                 // On startup, print out to console (still attached at this point)
 722                 if (!old)
 723                         printf("%s\n", line.c_str());
 724                 // If a user is rehashing, tell them directly
 725                 if (user)
 726                         user->SendText(":%s NOTICE %s :*** %s", ServerInstance->Config->ServerName.c_str(), user->nick.c_str(), line.c_str());
 727                 // Also tell opers
 728                 ServerInstance->SNO->WriteGlobalSno('a', line);
 729         }
 730
 731         errstr.clear();
 732         errstr.str(std::string());
 733
 734         // Re-parse our MOTD and RULES files for colors -- Justasic
 735         for (ClassVector::const_iterator it = this->Classes.begin(), it_end = this->Classes.end(); it != it_end; ++it)
 736         {
 737                 ConfigTag *tag = (*it)->config;
 738                 // Make sure our connection class allows motd colors
 739                 if(!tag->getBool("allowmotdcolors"))
 740                       continue;
 741
 742                 ConfigFileCache::iterator motdfile = this->Files.find(tag->getString("motd", "motd"));
 743                 ConfigFileCache::iterator rulesfile = this->Files.find(tag->getString("rules", "rules"));
 744
 745                 if(motdfile != this->Files.end())
 746                       this->ProcessColors(motdfile);
 747
 748                 if(rulesfile != this->Files.end())
 749                       this->ProcessColors(rulesfile);
 750         }
 751
 752         /* No old configuration -> initial boot, nothing more to do here */
 753         if (!old)
 754         {
 755                 if (!valid)
 756                 {
 757                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 758                 }
 759
 760                 return;
 761         }
 762
 763
 764         // If there were errors processing configuration, don't touch modules.
 765         if (!valid)
 766                 return;
 767
 768         ApplyModules(user);
 769
 770         if (user)
 771                 user->SendText(":%s NOTICE %s :*** Successfully rehashed server.",
 772                         ServerInstance->Config->ServerName.c_str(), user->nick.c_str());
 773         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 774 }
 775
 776 void ServerConfig::ApplyModules(User* user)
 777 {
 778         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
 779         if (whowas)
 780                 WhowasRequest(NULL, whowas, WhowasRequest::WHOWAS_PRUNE).Send();
 781
 782         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
 783         std::vector<std::string> added_modules;
 784         std::set<std::string> removed_modules(v.begin(), v.end());
 785
 786         ConfigTagList tags = ConfTags("module");
 787         for(ConfigIter i = tags.first; i != tags.second; ++i)
 788         {
 789                 ConfigTag* tag = i->second;
 790                 std::string name;
 791                 if (tag->readString("name", name))
 792                 {
 793                         // if this module is already loaded, the erase will succeed, so we need do nothing
 794                         // otherwise, we need to add the module (which will be done later)
 795                         if (removed_modules.erase(name) == 0)
 796                                 added_modules.push_back(name);
 797                 }
 798         }
 799
 800         if (ConfValue("options")->getBool("allowhalfop") && removed_modules.erase("m_halfop.so") == 0)
 801                 added_modules.push_back("m_halfop.so");
 802
 803         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 804         {
 805                 // Don't remove cmd_*.so, just remove m_*.so
 806                 if (removing->c_str()[0] == 'c')
 807                         continue;
 808                 Module* m = ServerInstance->Modules->Find(*removing);
 809                 if (m && ServerInstance->Modules->Unload(m))
 810                 {
 811                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
 812
 813                         if (user)
 814                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
 815                         else
 816                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
 817                 }
 818                 else
 819                 {
 820                         if (user)
 821                                 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());
 822                         else
 823                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
 824                 }
 825         }
 826
 827         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 828         {
 829                 if (ServerInstance->Modules->Load(adding->c_str()))
 830                 {
 831                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 832                         if (user)
 833                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
 834                         else
 835                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 836                 }
 837                 else
 838                 {
 839                         if (user)
 840                                 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());
 841                         else
 842                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 843                 }
 844         }
 845 }
 846
 847 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
 848 {
 849         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
 850 }
 851
 852 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 853 {
 854         ConfigTagList found = config_data.equal_range(tag);
 855         if (found.first == found.second)
 856                 return NULL;
 857         ConfigTag* rv = found.first->second;
 858         found.first++;
 859         if (found.first != found.second)
 860                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 861                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 862         return rv;
 863 }
 864
 865 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 866 {
 867         return config_data.equal_range(tag);
 868 }
 869
 870 /*
 871  * Replace all color codes from the special[] array to actual
 872  * color code chars using C++ style escape sequences. You
 873  * can append other chars to replace if you like -- Justasic
 874  */
 875 void ServerConfig::ProcessColors(ConfigFileCache::iterator &file)
 876 {
 877         static struct special_chars
 878         {
 879                 std::string character;
 880                 std::string replace;
 881                 special_chars(const std::string &c, const std::string &r) : character(c), replace(r) { }
 882         }
 883
 884         special[] = {
 885                 special_chars("\\002", "\002"),  // Bold
 886                 special_chars("\\037", "\037"),  // underline
 887                 special_chars("\\003", "\003"),  // Color
 888                 special_chars("\\017", "\017"), // Stop colors
 889                 special_chars("\\u", "\037"),    // Alias for underline
 890                 special_chars("\\b", "\002"),    // Alias for Bold
 891                 special_chars("\\x", "\017"),    // Alias for stop
 892                 special_chars("\\c", "\003"),    // Alias for color
 893                 special_chars("", "")
 894         };
 895
 896         for(file_cache::iterator it = file->second.begin(), it_end = file->second.end(); it != it_end; it++)
 897         {
 898                 std::string ret = *it;
 899                 for(int i = 0; special[i].character.empty() == false; ++i)
 900                 {
 901                         std::string::size_type pos = ret.find(special[i].character);
 902                         if(pos == std::string::npos) // Couldn't find the character, skip this line
 903                                 continue;
 904
 905                         if((pos > 0) && (ret[pos-1] == '\\') && (ret[pos] == '\\'))
 906                                 continue; // Skip double slashes.
 907
 908                         // Replace all our characters in the array
 909                         while(pos != std::string::npos)
 910                         {
 911                                 ret = ret.substr(0, pos) + special[i].replace + ret.substr(pos + special[i].character.size());
 912                                 pos = ret.find(special[i].character, pos + special[i].replace.size());
 913                         }
 914                 }
 915
 916                 // Replace double slashes with a single slash before we return
 917                 std::string::size_type pos = ret.find("\\\\");
 918                 while(pos != std::string::npos)
 919                 {
 920                         ret = ret.substr(0, pos) + "\\" + ret.substr(pos + 2);
 921                         pos = ret.find("\\\\", pos + 1);
 922                 }
 923                 *it = ret;
 924         }
 925 }
 926
 927 bool ServerConfig::FileExists(const char* file)
 928 {
 929         struct stat sb;
 930         if (stat(file, &sb) == -1)
 931                 return false;
 932
 933         if ((sb.st_mode & S_IFDIR) > 0)
 934                 return false;
 935
 936         FILE *input = fopen(file, "r");
 937         if (input == NULL)
 938                 return false;
 939         else
 940         {
 941                 fclose(input);
 942                 return true;
 943         }
 944 }
 945
 946 const char* ServerConfig::CleanFilename(const char* name)
 947 {
 948         const char* p = name + strlen(name);
 949         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
 950         return (p != name ? ++p : p);
 951 }
 952
 953 std::string ServerConfig::GetSID()
 954 {
 955         return sid;
 956 }
 957
 958 void ConfigReaderThread::Run()
 959 {
 960         Config->Read();
 961         done = true;
 962 }
 963
 964 void ConfigReaderThread::Finish()
 965 {
 966         ServerConfig* old = ServerInstance->Config;
 967         ServerInstance->Logs->Log("CONFIG",DEBUG,"Switching to new configuration...");
 968         ServerInstance->Config = this->Config;
 969         Config->Apply(old, TheUserUID);
 970
 971         if (Config->valid)
 972         {
 973                 /*
 974                  * Apply the changed configuration from the rehash.
 975                  *
 976                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 977                  * thoroughly!!!
 978                  */
 979                 ServerInstance->XLines->CheckELines();
 980                 ServerInstance->XLines->ApplyLines();
 981                 ServerInstance->Res->Rehash();
 982                 ServerInstance->ResetMaxBans();
 983                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 984                 User* user = ServerInstance->FindNick(TheUserUID);
 985                 FOREACH_MOD(I_OnRehash, OnRehash(user));
 986                 ServerInstance->BuildISupport();
 987
 988                 ServerInstance->Logs->CloseLogs();
 989                 ServerInstance->Logs->OpenFileLogs();
 990
 991                 if (Config->RawLog && !old->RawLog)
 992                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 993
 994                 Config = old;
 995         }
 996         else
 997         {
 998                 // whoops, abort!
 999                 ServerInstance->Config = old;
1000         }
1001 }