src/configreader.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2010 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *          the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 /* $Core */
  15 /* $CopyInstall: conf/inspircd.quotes.example $(CONPATH) */
  16 /* $CopyInstall: conf/inspircd.rules.example $(CONPATH) */
  17 /* $CopyInstall: conf/inspircd.motd.example $(CONPATH) */
  18 /* $CopyInstall: conf/inspircd.helpop-full.example $(CONPATH) */
  19 /* $CopyInstall: conf/inspircd.helpop.example $(CONPATH) */
  20 /* $CopyInstall: conf/inspircd.censor.example $(CONPATH) */
  21 /* $CopyInstall: conf/inspircd.filter.example $(CONPATH) */
  22 /* $CopyInstall: conf/inspircd.conf.example $(CONPATH) */
  23 /* $CopyInstall: conf/modules.conf.example $(CONPATH) */
  24 /* $CopyInstall: conf/opers.conf.example $(CONPATH) */
  25 /* $CopyInstall: conf/links.conf.example $(CONPATH) */
  26 /* $CopyInstall: tools/gdbargs $(BASE)/.gdbargs */
  27
  28 #include "inspircd.h"
  29 #include <fstream>
  30 #include "xline.h"
  31 #include "exitcodes.h"
  32 #include "commands/cmd_whowas.h"
  33 #include "configparser.h"
  34
  35 ServerConfig::ServerConfig()
  36 {
  37         WhoWasGroupSize = WhoWasMaxGroups = WhoWasMaxKeep = 0;
  38         NoUserDns = OperSpyWhois = HideBans = HideSplits = UndernetMsgPrefix = false;
  39         CycleHosts = InvBypassModes = true;
  40         dns_timeout = 5;
  41         MaxTargets = 20;
  42         NetBufferSize = 10240;
  43         SoftLimit = ServerInstance->SE->GetMaxFds();
  44         MaxConn = SOMAXCONN;
  45         MaxChans = 20;
  46         OperMaxChans = 30;
  47         c_ipv4_range = 32;
  48         c_ipv6_range = 128;
  49 }
  50
  51 void ServerConfig::Update005()
  52 {
  53         std::stringstream out(data005);
  54         std::string token;
  55         std::string line5;
  56         int token_counter = 0;
  57         isupport.clear();
  58         while (out >> token)
  59         {
  60                 line5 = line5 + token + " ";
  61                 token_counter++;
  62                 if (token_counter >= 13)
  63                 {
  64                         char buf[MAXBUF];
  65                         snprintf(buf, MAXBUF, "%s:are supported by this server", line5.c_str());
  66                         isupport.push_back(buf);
  67                         line5.clear();
  68                         token_counter = 0;
  69                 }
  70         }
  71         if (!line5.empty())
  72         {
  73                 char buf[MAXBUF];
  74                 snprintf(buf, MAXBUF, "%s:are supported by this server", line5.c_str());
  75                 isupport.push_back(buf);
  76         }
  77 }
  78
  79 void ServerConfig::Send005(User* user)
  80 {
  81         for (std::vector<std::string>::iterator line = ServerInstance->Config->isupport.begin(); line != ServerInstance->Config->isupport.end(); line++)
  82                 user->WriteNumeric(RPL_ISUPPORT, "%s %s", user->nick.c_str(), line->c_str());
  83 }
  84
  85 template<typename T, typename V>
  86 static void range(T& value, V min, V max, V def, const char* msg)
  87 {
  88         if (value >= (T)min && value <= (T)max)
  89                 return;
  90         ServerInstance->Logs->Log("CONFIG", DEFAULT,
  91                 "WARNING: %s value of %ld is not between %ld and %ld; set to %ld.",
  92                 msg, (long)value, (long)min, (long)max, (long)def);
  93         value = def;
  94 }
  95
  96
  97 static void ValidIP(const std::string& ip, const std::string& key)
  98 {
  99         irc::sockets::sockaddrs dummy;
 100         if (!irc::sockets::aptosa(ip, 0, dummy))
 101                 throw CoreException("The value of "+key+" is not an IP address");
 102 }
 103
 104 static void ValidHost(const std::string& p, const std::string& msg)
 105 {
 106         int num_dots = 0;
 107         if (p.empty() || p[0] == '.')
 108                 throw CoreException("The value of "+msg+" is not a valid hostname");
 109         for (unsigned int i=0;i < p.length();i++)
 110         {
 111                 switch (p[i])
 112                 {
 113                         case ' ':
 114                                 throw CoreException("The value of "+msg+" is not a valid hostname");
 115                         case '.':
 116                                 num_dots++;
 117                         break;
 118                 }
 119         }
 120         if (num_dots == 0)
 121                 throw CoreException("The value of "+msg+" is not a valid hostname");
 122 }
 123
 124 bool ServerConfig::ApplyDisabledCommands(const std::string& data)
 125 {
 126         std::stringstream dcmds(data);
 127         std::string thiscmd;
 128
 129         /* Enable everything first */
 130         for (Commandtable::iterator x = ServerInstance->Parser->cmdlist.begin(); x != ServerInstance->Parser->cmdlist.end(); x++)
 131                 x->second->Disable(false);
 132
 133         /* Now disable all the ones which the user wants disabled */
 134         while (dcmds >> thiscmd)
 135         {
 136                 Commandtable::iterator cm = ServerInstance->Parser->cmdlist.find(thiscmd);
 137                 if (cm != ServerInstance->Parser->cmdlist.end())
 138                 {
 139                         cm->second->Disable(true);
 140                 }
 141         }
 142         return true;
 143 }
 144
 145 #ifdef WINDOWS
 146 // Note: the windows validator is in win32wrapper.cpp
 147 void FindDNS(std::string& server);
 148 #else
 149 static void FindDNS(std::string& server)
 150 {
 151         if (!server.empty())
 152                 return;
 153
 154         // attempt to look up their nameserver from /etc/resolv.conf
 155         ServerInstance->Logs->Log("CONFIG",DEFAULT,"WARNING: <dns:server> not defined, attempting to find working server in /etc/resolv.conf...");
 156
 157         std::ifstream resolv("/etc/resolv.conf");
 158
 159         while (resolv >> server)
 160         {
 161                 if (server == "nameserver")
 162                 {
 163                         resolv >> server;
 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         ServerInstance->Logs->Log("CONFIG",DEFAULT,"/etc/resolv.conf contains no viable nameserver entries! Defaulting to nameserver '127.0.0.1'!");
 170         server = "127.0.0.1";
 171 }
 172 #endif
 173
 174 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
 175 {
 176         ConfigTagList tags = conf->ConfTags(tag);
 177         for(ConfigIter i = tags.first; i != tags.second; ++i)
 178         {
 179                 ConfigTag* ctag = i->second;
 180                 std::string mask;
 181                 if (!ctag->readString(key, mask))
 182                         throw CoreException("<"+tag+":"+key+"> missing at " + ctag->getTagLocation());
 183                 std::string reason = ctag->getString("reason", "<Config>");
 184                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
 185                 if (!ServerInstance->XLines->AddLine(xl, NULL))
 186                         delete xl;
 187         }
 188 }
 189
 190 typedef std::map<std::string, ConfigTag*> LocalIndex;
 191 void ServerConfig::CrossCheckOperClassType()
 192 {
 193         LocalIndex operclass;
 194         ConfigTagList tags = ConfTags("class");
 195         for(ConfigIter i = tags.first; i != tags.second; ++i)
 196         {
 197                 ConfigTag* tag = i->second;
 198                 std::string name = tag->getString("name");
 199                 if (name.empty())
 200                         throw CoreException("<class:name> missing from tag at " + tag->getTagLocation());
 201                 operclass[name] = tag;
 202         }
 203         tags = ConfTags("type");
 204         for(ConfigIter i = tags.first; i != tags.second; ++i)
 205         {
 206                 ConfigTag* tag = i->second;
 207                 std::string name = tag->getString("name");
 208                 if (name.empty())
 209                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
 210
 211                 if (!ServerInstance->IsNick(name.c_str(), Limits.NickMax))
 212                         throw CoreException("<type:name> is invalid (value '" + name + "')");
 213
 214                 OperInfo* ifo = new OperInfo;
 215                 oper_blocks[" " + name] = ifo;
 216                 ifo->name = name;
 217                 ifo->type_block = tag;
 218
 219                 std::string classname;
 220                 irc::spacesepstream str(tag->getString("classes"));
 221                 while (str.GetToken(classname))
 222                 {
 223                         LocalIndex::iterator cls = operclass.find(classname);
 224                         if (cls == operclass.end())
 225                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 226                         ifo->class_blocks.push_back(cls->second);
 227                 }
 228         }
 229
 230         tags = ConfTags("oper");
 231         for(ConfigIter i = tags.first; i != tags.second; ++i)
 232         {
 233                 ConfigTag* tag = i->second;
 234
 235                 std::string name = tag->getString("name");
 236                 if (name.empty())
 237                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 238
 239                 std::string type = tag->getString("type");
 240                 OperIndex::iterator tblk = oper_blocks.find(" " + type);
 241                 if (tblk == oper_blocks.end())
 242                         throw CoreException("Oper block " + name + " has missing type " + type);
 243                 if (oper_blocks.find(name) != oper_blocks.end())
 244                         throw CoreException("Duplicate oper block with name " + name);
 245
 246                 OperInfo* ifo = new OperInfo;
 247                 ifo->name = type;
 248                 ifo->oper_block = tag;
 249                 ifo->type_block = tblk->second->type_block;
 250                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 251                 oper_blocks[name] = ifo;
 252         }
 253 }
 254
 255 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 256 {
 257         typedef std::map<std::string, ConnectClass*> ClassMap;
 258         ClassMap oldBlocksByMask;
 259         if (current)
 260         {
 261                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 262                 {
 263                         ConnectClass* c = *i;
 264                         std::string typeMask = (c->type == CC_ALLOW) ? "a" : (c->type == CC_DENY) ? "d" : "n";
 265                         typeMask += c->host;
 266                         oldBlocksByMask[typeMask] = c;
 267                 }
 268         }
 269
 270         int blk_count = config_data.count("connect");
 271         if (blk_count == 0)
 272         {
 273                 // No connect blocks found; make a trivial default block
 274                 std::vector<KeyVal>* items;
 275                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 276                 items->push_back(std::make_pair("allow", "*"));
 277                 config_data.insert(std::make_pair("connect", tag));
 278                 blk_count = 1;
 279         }
 280
 281         ClassMap newBlocksByMask;
 282         Classes.resize(blk_count);
 283         std::map<std::string, int> names;
 284
 285         bool try_again = true;
 286         for(int tries=0; try_again; tries++)
 287         {
 288                 try_again = false;
 289                 ConfigTagList tags = ConfTags("connect");
 290                 int i=0;
 291                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 292                 {
 293                         ConfigTag* tag = it->second;
 294                         if (Classes[i])
 295                                 continue;
 296
 297                         ConnectClass* parent = NULL;
 298                         std::string parentName = tag->getString("parent");
 299                         if (!parentName.empty())
 300                         {
 301                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 302                                 if (parentIter == names.end())
 303                                 {
 304                                         try_again = true;
 305                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 306                                         if (tries >= blk_count)
 307                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block " + ConvToStr(i));
 308                                         continue;
 309                                 }
 310                                 parent = Classes[parentIter->second];
 311                         }
 312
 313                         std::string name = tag->getString("name");
 314                         if (name.empty())
 315                         {
 316                                 name = "unnamed-" + ConvToStr(i);
 317                         }
 318
 319                         if (names.find(name) != names.end())
 320                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 321                         names[name] = i;
 322
 323                         std::string mask, typeMask;
 324                         char type;
 325
 326                         if (tag->readString("allow", mask, false))
 327                         {
 328                                 type = CC_ALLOW;
 329                                 typeMask = 'a' + mask;
 330                         }
 331                         else if (tag->readString("deny", mask, false))
 332                         {
 333                                 type = CC_DENY;
 334                                 typeMask = 'd' + mask;
 335                         }
 336                         else
 337                         {
 338                                 type = CC_NAMED;
 339                                 mask = name;
 340                                 typeMask = 'n' + mask;
 341                         }
 342                         ClassMap::iterator dupMask = newBlocksByMask.find(typeMask);
 343                         if (dupMask != newBlocksByMask.end())
 344                                 throw CoreException("Two connect classes cannot have the same mask (" + mask + ")");
 345
 346                         ConnectClass* me = parent ?
 347                                 new ConnectClass(tag, type, mask, *parent) :
 348                                 new ConnectClass(tag, type, mask);
 349
 350                         me->name = name;
 351
 352                         tag->readString("password", me->pass);
 353                         tag->readString("hash", me->hash);
 354                         me->registration_timeout = tag->getInt("timeout", me->registration_timeout);
 355                         me->pingtime = tag->getInt("pingfreq", me->pingtime);
 356                         std::string sendq;
 357                         if (tag->readString("sendq", sendq))
 358                         {
 359                                 // attempt to guess a good hard/soft sendq from a single value
 360                                 long value = atol(sendq.c_str());
 361                                 if (value > 16384)
 362                                         me->softsendqmax = value / 16;
 363                                 else
 364                                         me->softsendqmax = value;
 365                                 me->hardsendqmax = value * 8;
 366                         }
 367                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 368                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 369                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 370                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 371                         me->commandrate = tag->getInt("commandrate", me->commandrate);
 372                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 373                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 374                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 375                         me->port = tag->getInt("port", me->port);
 376                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 377                         me->limit = tag->getInt("limit", me->limit);
 378
 379                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 380                         if (oldMask != oldBlocksByMask.end())
 381                         {
 382                                 ConnectClass* old = oldMask->second;
 383                                 oldBlocksByMask.erase(oldMask);
 384                                 old->Update(me);
 385                                 delete me;
 386                                 me = old;
 387                         }
 388                         newBlocksByMask[typeMask] = me;
 389                         Classes[i] = me;
 390                 }
 391         }
 392 }
 393
 394 /** Represents a deprecated configuration tag.
 395  */
 396 struct Deprecated
 397 {
 398         /** Tag name
 399          */
 400         const char* tag;
 401         /** Tag value
 402          */
 403         const char* value;
 404         /** Reason for deprecation
 405          */
 406         const char* reason;
 407 };
 408
 409 static const Deprecated ChangedConfig[] = {
 410         {"options", "hidelinks",                "has been moved to <security:hidelinks> as of 1.2a3"},
 411         {"options", "hidewhois",                "has been moved to <security:hidewhois> as of 1.2a3"},
 412         {"options", "userstats",                "has been moved to <security:userstats> as of 1.2a3"},
 413         {"options", "customversion",    "has been moved to <security:customversion> as of 1.2a3"},
 414         {"options", "hidesplits",               "has been moved to <security:hidesplits> as of 1.2a3"},
 415         {"options", "hidebans",         "has been moved to <security:hidebans> as of 1.2a3"},
 416         {"options", "hidekills",                "has been moved to <security:hidekills> as of 1.2a3"},
 417         {"options", "operspywhois",             "has been moved to <security:operspywhois> as of 1.2a3"},
 418         {"options", "announceinvites",  "has been moved to <security:announceinvites> as of 1.2a3"},
 419         {"options", "hidemodes",                "has been moved to <security:hidemodes> as of 1.2a3"},
 420         {"options", "maxtargets",               "has been moved to <security:maxtargets> as of 1.2a3"},
 421         {"options",     "nouserdns",            "has been moved to <performance:nouserdns> as of 1.2a3"},
 422         {"options",     "maxwho",               "has been moved to <performance:maxwho> as of 1.2a3"},
 423         {"options",     "softlimit",            "has been moved to <performance:softlimit> as of 1.2a3"},
 424         {"options", "somaxconn",                "has been moved to <performance:somaxconn> as of 1.2a3"},
 425         {"options", "netbuffersize",    "has been moved to <performance:netbuffersize> as of 1.2a3"},
 426         {"options", "maxwho",           "has been moved to <performance:maxwho> as of 1.2a3"},
 427         {"options",     "loglevel",             "1.2 does not use the loglevel value. Please define <log> tags instead."},
 428         {"die",     "value",            "you need to reread your config"},
 429 };
 430
 431 void ServerConfig::Fill()
 432 {
 433         ConfigTag* options = ConfValue("options");
 434         ConfigTag* security = ConfValue("security");
 435         diepass = ConfValue("power")->getString("diepass");
 436         restartpass = ConfValue("power")->getString("restartpass");
 437         powerhash = ConfValue("power")->getString("hash");
 438         PrefixQuit = options->getString("prefixquit");
 439         SuffixQuit = options->getString("suffixquit");
 440         FixedQuit = options->getString("fixedquit");
 441         PrefixPart = options->getString("prefixpart");
 442         SuffixPart = options->getString("suffixpart");
 443         FixedPart = options->getString("fixedpart");
 444         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 445         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 446         MoronBanner = options->getString("moronbanner", "You're banned!");
 447         ServerName = ConfValue("server")->getString("name");
 448         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 449         Network = ConfValue("server")->getString("network", "Network");
 450         sid = ConfValue("server")->getString("id", "");
 451         AdminName = ConfValue("admin")->getString("name", "");
 452         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 453         AdminNick = ConfValue("admin")->getString("nick", "admin");
 454         ModPath = ConfValue("path")->getString("moduledir", MOD_PATH);
 455         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 456         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 457         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 458         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 459         UserStats = security->getString("userstats");
 460         CustomVersion = security->getString("customversion");
 461         HideSplits = security->getBool("hidesplits");
 462         HideBans = security->getBool("hidebans");
 463         HideWhoisServer = security->getString("hidewhois");
 464         HideKillsServer = security->getString("hidekills");
 465         OperSpyWhois = security->getBool("operspywhois");
 466         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 467         GenericOper = security->getBool("genericoper");
 468         NoUserDns = ConfValue("performance")->getBool("nouserdns");
 469         SyntaxHints = options->getBool("syntaxhints");
 470         CycleHosts = options->getBool("cyclehosts");
 471         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 472         FullHostInTopic = options->getBool("hostintopic");
 473         MaxTargets = security->getInt("maxtargets", 20);
 474         DefaultModes = options->getString("defaultmodes", "nt");
 475         PID = ConfValue("pid")->getString("file");
 476         WhoWasGroupSize = ConfValue("whowas")->getInt("groupsize");
 477         WhoWasMaxGroups = ConfValue("whowas")->getInt("maxgroups");
 478         WhoWasMaxKeep = ServerInstance->Duration(ConfValue("whowas")->getString("maxkeep"));
 479         DieValue = ConfValue("die")->getString("value");
 480         MaxChans = ConfValue("channels")->getInt("users", 20);
 481         OperMaxChans = ConfValue("channels")->getInt("opers", 60);
 482         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 483         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 484         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 485         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 486         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 487         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 488         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 489         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 490         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 491         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 492         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 493         InvBypassModes = options->getBool("invitebypassmodes", true);
 494
 495         range(SoftLimit, 10, ServerInstance->SE->GetMaxFds(), ServerInstance->SE->GetMaxFds(), "<performance:softlimit>");
 496         range(MaxConn, 0, SOMAXCONN, SOMAXCONN, "<performance:somaxconn>");
 497         range(MaxTargets, 1, 31, 20, "<security:maxtargets>");
 498         range(NetBufferSize, 1024, 65534, 10240, "<performance:netbuffersize>");
 499         range(WhoWasGroupSize, 0, 10000, 10, "<whowas:groupsize>");
 500         range(WhoWasMaxGroups, 0, 1000000, 10240, "<whowas:maxgroups>");
 501         range(WhoWasMaxKeep, 3600, INT_MAX, 3600, "<whowas:maxkeep>");
 502
 503         ValidIP(DNSServer, "<dns:server>");
 504         ValidHost(ServerName, "<server:name>");
 505         if (!sid.empty() && !ServerInstance->IsSID(sid))
 506                 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.");
 507
 508         ConfigTagList tags = ConfTags("uline");
 509         for(ConfigIter i = tags.first; i != tags.second; ++i)
 510         {
 511                 ConfigTag* tag = i->second;
 512                 std::string server;
 513                 if (!tag->readString("server", server))
 514                         throw CoreException("<uline> tag missing server at " + tag->getTagLocation());
 515                 ulines[assign(server)] = tag->getBool("silent");
 516         }
 517
 518         tags = ConfTags("banlist");
 519         for(ConfigIter i = tags.first; i != tags.second; ++i)
 520         {
 521                 ConfigTag* tag = i->second;
 522                 std::string chan;
 523                 if (!tag->readString("chan", chan))
 524                         throw CoreException("<banlist> tag missing chan at " + tag->getTagLocation());
 525                 maxbans[chan] = tag->getInt("limit");
 526         }
 527
 528         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 529         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 530         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 531         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 532
 533         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 534         for (const unsigned char* p = (const unsigned char*)ConfValue("disabled")->getString("usermodes").c_str(); *p; ++p)
 535         {
 536                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid usermode ")+(char)*p+" was found.");
 537                 DisabledUModes[*p - 'A'] = 1;
 538         }
 539
 540         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 541         for (const unsigned char* p = (const unsigned char*)ConfValue("disabled")->getString("chanmodes").c_str(); *p; ++p)
 542         {
 543                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid chanmode ")+(char)*p+" was found.");
 544                 DisabledCModes[*p - 'A'] = 1;
 545         }
 546
 547         memset(HideModeLists, 0, sizeof(HideModeLists));
 548         for (const unsigned char* p = (const unsigned char*)ConfValue("security")->getString("hidemodes").c_str(); *p; ++p)
 549                 HideModeLists[*p] = true;
 550
 551         std::string v = security->getString("announceinvites");
 552
 553         if (v == "ops")
 554                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 555         else if (v == "all")
 556                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 557         else if (v == "dynamic")
 558                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 559         else
 560                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 561
 562         Limits.Finalise();
 563 }
 564
 565 // WARNING: it is not safe to use most of the codebase in this function, as it
 566 // will run in the config reader thread
 567 void ServerConfig::Read()
 568 {
 569         /* Load and parse the config file, if there are any errors then explode */
 570
 571         ParseStack stack(this);
 572         try
 573         {
 574                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 575         }
 576         catch (CoreException& err)
 577         {
 578                 valid = false;
 579                 errstr << err.GetReason();
 580         }
 581         if (valid)
 582         {
 583                 ReadFile(MOTD, ConfValue("files")->getString("motd"));
 584                 ReadFile(RULES, ConfValue("files")->getString("rules"));
 585                 DNSServer = ConfValue("dns")->getString("server");
 586                 FindDNS(DNSServer);
 587         }
 588 }
 589
 590 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 591 {
 592         valid = true;
 593
 594         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 595         try
 596         {
 597                 for (int Index = 0; Index * sizeof(Deprecated) < sizeof(ChangedConfig); Index++)
 598                 {
 599                         std::string dummy;
 600                         if (ConfValue(ChangedConfig[Index].tag)->readString(ChangedConfig[Index].value, dummy, true))
 601                                 errstr << "Your configuration contains a deprecated value: <"
 602                                         << ChangedConfig[Index].tag << ":" << ChangedConfig[Index].value << "> - " << ChangedConfig[Index].reason
 603                                         << " (at " << ConfValue(ChangedConfig[Index].tag)->getTagLocation() << ")\n";
 604                 }
 605
 606                 Fill();
 607
 608                 // Handle special items
 609                 CrossCheckOperClassType();
 610                 CrossCheckConnectBlocks(old);
 611         }
 612         catch (CoreException &ce)
 613         {
 614                 errstr << ce.GetReason();
 615         }
 616
 617         // write once here, to try it out and make sure its ok
 618         ServerInstance->WritePID(this->PID);
 619
 620         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 621         valid = errstr.str().empty();
 622
 623         /*
 624          * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 625          */
 626         if (old)
 627         {
 628                 this->ServerName = old->ServerName;
 629                 this->sid = old->sid;
 630                 this->cmdline = old->cmdline;
 631
 632                 // Same for ports... they're bound later on first run.
 633                 FailedPortList pl;
 634                 ServerInstance->BindPorts(pl);
 635                 if (pl.size())
 636                 {
 637                         errstr << "Not all your client ports could be bound.\nThe following port(s) failed to bind:\n";
 638
 639                         int j = 1;
 640                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 641                         {
 642                                 char buf[MAXBUF];
 643                                 snprintf(buf, MAXBUF, "%d.   Address: %s   Reason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 644                                 errstr << buf;
 645                         }
 646                 }
 647         }
 648
 649         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 650
 651         if (!valid)
 652                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "There were errors in your configuration file:");
 653
 654         while (errstr.good())
 655         {
 656                 std::string line;
 657                 getline(errstr, line, '\n');
 658                 if (!line.empty())
 659                 {
 660                         if (user)
 661                                 user->WriteServ("NOTICE %s :*** %s", user->nick.c_str(), line.c_str());
 662                         else
 663                                 ServerInstance->SNO->WriteGlobalSno('a', line);
 664                 }
 665
 666                 if (!old)
 667                 {
 668                         // Starting up, so print it out so it's seen. XXX this is a bit of a hack.
 669                         printf("%s\n", line.c_str());
 670                 }
 671         }
 672
 673         errstr.clear();
 674         errstr.str(std::string());
 675
 676         /* No old configuration -> initial boot, nothing more to do here */
 677         if (!old)
 678         {
 679                 if (!valid)
 680                 {
 681                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 682                 }
 683
 684                 return;
 685         }
 686
 687         // If there were errors processing configuration, don't touch modules.
 688         if (!valid)
 689                 return;
 690
 691         ApplyModules(user);
 692
 693         if (user)
 694                 user->WriteServ("NOTICE %s :*** Successfully rehashed server.", user->nick.c_str());
 695         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 696 }
 697
 698 void ServerConfig::ApplyModules(User* user)
 699 {
 700         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
 701         if (whowas)
 702                 WhowasRequest(NULL, whowas, WhowasRequest::WHOWAS_PRUNE).Send();
 703
 704         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
 705         std::vector<std::string> added_modules;
 706         std::set<std::string> removed_modules(v.begin(), v.end());
 707
 708         ConfigTagList tags = ConfTags("module");
 709         for(ConfigIter i = tags.first; i != tags.second; ++i)
 710         {
 711                 ConfigTag* tag = i->second;
 712                 std::string name;
 713                 if (tag->readString("name", name))
 714                 {
 715                         // if this module is already loaded, the erase will succeed, so we need do nothing
 716                         // otherwise, we need to add the module (which will be done later)
 717                         if (removed_modules.erase(name) == 0)
 718                                 added_modules.push_back(name);
 719                 }
 720         }
 721
 722         if (ConfValue("options")->getBool("allowhalfop") && removed_modules.erase("m_halfop.so") == 0)
 723                 added_modules.push_back("m_halfop.so");
 724
 725         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 726         {
 727                 // Don't remove cmd_*.so, just remove m_*.so
 728                 if (removing->c_str()[0] == 'c')
 729                         continue;
 730                 Module* m = ServerInstance->Modules->Find(*removing);
 731                 if (m && ServerInstance->Modules->Unload(m))
 732                 {
 733                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
 734
 735                         if (user)
 736                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
 737                         else
 738                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
 739                 }
 740                 else
 741                 {
 742                         if (user)
 743                                 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());
 744                         else
 745                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
 746                 }
 747         }
 748
 749         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 750         {
 751                 if (ServerInstance->Modules->Load(adding->c_str()))
 752                 {
 753                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 754                         if (user)
 755                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
 756                         else
 757                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 758                 }
 759                 else
 760                 {
 761                         if (user)
 762                                 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());
 763                         else
 764                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 765                 }
 766         }
 767 }
 768
 769 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
 770 {
 771         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
 772 }
 773
 774 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 775 {
 776         ConfigDataHash::iterator iter = config_data.find(tag);
 777         if (iter == config_data.end())
 778                 return NULL;
 779         return iter->second;
 780 }
 781
 782 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 783 {
 784         return config_data.equal_range(tag);
 785 }
 786
 787 /** Read the contents of a file located by `fname' into a file_cache pointed at by `F'.
 788  */
 789 bool ServerConfig::ReadFile(file_cache &F, const std::string& fname)
 790 {
 791         if (fname.empty())
 792                 return false;
 793
 794         char linebuf[MAXBUF];
 795
 796         F.clear();
 797
 798         FileWrapper file(fopen(fname.c_str(), "r"));
 799
 800         if (!file)
 801                 return false;
 802         while (!feof(file))
 803         {
 804                 if (fgets(linebuf, sizeof(linebuf), file))
 805                         linebuf[strlen(linebuf)-1] = 0;
 806                 else
 807                         *linebuf = 0;
 808
 809                 F.push_back(*linebuf ? linebuf : " ");
 810         }
 811
 812         return true;
 813 }
 814
 815 bool ServerConfig::FileExists(const char* file)
 816 {
 817         struct stat sb;
 818         if (stat(file, &sb) == -1)
 819                 return false;
 820
 821         if ((sb.st_mode & S_IFDIR) > 0)
 822                 return false;
 823
 824         FILE *input = fopen(file, "r");
 825         if (input == NULL)
 826                 return false;
 827         else
 828         {
 829                 fclose(input);
 830                 return true;
 831         }
 832 }
 833
 834 const char* ServerConfig::CleanFilename(const char* name)
 835 {
 836         const char* p = name + strlen(name);
 837         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
 838         return (p != name ? ++p : p);
 839 }
 840
 841 std::string ServerConfig::GetSID()
 842 {
 843         return sid;
 844 }
 845
 846 void ConfigReaderThread::Run()
 847 {
 848         Config->Read();
 849         done = true;
 850 }
 851
 852 void ConfigReaderThread::Finish()
 853 {
 854         ServerConfig* old = ServerInstance->Config;
 855         ServerInstance->Logs->Log("CONFIG",DEBUG,"Switching to new configuration...");
 856         ServerInstance->Logs->CloseLogs();
 857         ServerInstance->Config = this->Config;
 858         ServerInstance->Logs->OpenFileLogs();
 859         Config->Apply(old, TheUserUID);
 860
 861         if (Config->valid)
 862         {
 863                 /*
 864                  * Apply the changed configuration from the rehash.
 865                  *
 866                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 867                  * thoroughly!!!
 868                  */
 869                 ServerInstance->XLines->CheckELines();
 870                 ServerInstance->XLines->CheckELines();
 871                 ServerInstance->XLines->ApplyLines();
 872                 ServerInstance->Res->Rehash();
 873                 ServerInstance->ResetMaxBans();
 874                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 875                 User* user = ServerInstance->FindNick(TheUserUID);
 876                 FOREACH_MOD(I_OnRehash, OnRehash(user));
 877                 ServerInstance->BuildISupport();
 878
 879                 Config = old;
 880         }
 881         else
 882         {
 883                 // whoops, abort!
 884                 ServerInstance->Logs->CloseLogs();
 885                 ServerInstance->Config = old;
 886                 ServerInstance->Logs->OpenFileLogs();
 887         }
 888 }