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         MaxWhoResults = 0;
  46         MaxChans = 20;
  47         OperMaxChans = 30;
  48         c_ipv4_range = 32;
  49         c_ipv6_range = 128;
  50 }
  51
  52 void ServerConfig::Update005()
  53 {
  54         std::stringstream out(data005);
  55         std::string token;
  56         std::string line5;
  57         int token_counter = 0;
  58         isupport.clear();
  59         while (out >> token)
  60         {
  61                 line5 = line5 + token + " ";
  62                 token_counter++;
  63                 if (token_counter >= 13)
  64                 {
  65                         char buf[MAXBUF];
  66                         snprintf(buf, MAXBUF, "%s:are supported by this server", line5.c_str());
  67                         isupport.push_back(buf);
  68                         line5.clear();
  69                         token_counter = 0;
  70                 }
  71         }
  72         if (!line5.empty())
  73         {
  74                 char buf[MAXBUF];
  75                 snprintf(buf, MAXBUF, "%s:are supported by this server", line5.c_str());
  76                 isupport.push_back(buf);
  77         }
  78 }
  79
  80 void ServerConfig::Send005(User* user)
  81 {
  82         for (std::vector<std::string>::iterator line = ServerInstance->Config->isupport.begin(); line != ServerInstance->Config->isupport.end(); line++)
  83                 user->WriteNumeric(RPL_ISUPPORT, "%s %s", user->nick.c_str(), line->c_str());
  84 }
  85
  86 template<typename T, typename V>
  87 static void range(T& value, V min, V max, V def, const char* msg)
  88 {
  89         if (value >= (T)min && value <= (T)max)
  90                 return;
  91         ServerInstance->Logs->Log("CONFIG", DEFAULT,
  92                 "WARNING: %s value of %ld is not between %ld and %ld; set to %ld.",
  93                 msg, (long)value, (long)min, (long)max, (long)def);
  94         value = def;
  95 }
  96
  97
  98 static void ValidIP(const std::string& ip, const std::string& key)
  99 {
 100         irc::sockets::sockaddrs dummy;
 101         if (!irc::sockets::aptosa(ip, 0, dummy))
 102                 throw CoreException("The value of "+key+" is not an IP address");
 103 }
 104
 105 static void ValidHost(const std::string& p, const std::string& msg)
 106 {
 107         int num_dots = 0;
 108         if (p.empty() || p[0] == '.')
 109                 throw CoreException("The value of "+msg+" is not a valid hostname");
 110         for (unsigned int i=0;i < p.length();i++)
 111         {
 112                 switch (p[i])
 113                 {
 114                         case ' ':
 115                                 throw CoreException("The value of "+msg+" is not a valid hostname");
 116                         case '.':
 117                                 num_dots++;
 118                         break;
 119                 }
 120         }
 121         if (num_dots == 0)
 122                 throw CoreException("The value of "+msg+" is not a valid hostname");
 123 }
 124
 125 bool ServerConfig::ApplyDisabledCommands(const std::string& data)
 126 {
 127         std::stringstream dcmds(data);
 128         std::string thiscmd;
 129
 130         /* Enable everything first */
 131         for (Commandtable::iterator x = ServerInstance->Parser->cmdlist.begin(); x != ServerInstance->Parser->cmdlist.end(); x++)
 132                 x->second->Disable(false);
 133
 134         /* Now disable all the ones which the user wants disabled */
 135         while (dcmds >> thiscmd)
 136         {
 137                 Commandtable::iterator cm = ServerInstance->Parser->cmdlist.find(thiscmd);
 138                 if (cm != ServerInstance->Parser->cmdlist.end())
 139                 {
 140                         cm->second->Disable(true);
 141                 }
 142         }
 143         return true;
 144 }
 145
 146 #ifdef WINDOWS
 147 // Note: the windows validator is in win32wrapper.cpp
 148 void FindDNS(std::string& server);
 149 #else
 150 static void FindDNS(std::string& server)
 151 {
 152         if (!server.empty())
 153                 return;
 154
 155         // attempt to look up their nameserver from /etc/resolv.conf
 156         ServerInstance->Logs->Log("CONFIG",DEFAULT,"WARNING: <dns:server> not defined, attempting to find working server in /etc/resolv.conf...");
 157
 158         std::ifstream resolv("/etc/resolv.conf");
 159
 160         while (resolv >> server)
 161         {
 162                 if (server == "nameserver")
 163                 {
 164                         resolv >> server;
 165                         ServerInstance->Logs->Log("CONFIG",DEFAULT,"<dns:server> set to '%s' as first resolver in /etc/resolv.conf.",server.c_str());
 166                         return;
 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                 operclass[name] = tag;
 203         }
 204         tags = ConfTags("type");
 205         for(ConfigIter i = tags.first; i != tags.second; ++i)
 206         {
 207                 ConfigTag* tag = i->second;
 208                 std::string name = tag->getString("name");
 209                 if (name.empty())
 210                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
 211
 212                 if (!ServerInstance->IsNick(name.c_str(), Limits.NickMax))
 213                         throw CoreException("<type:name> is invalid (value '" + name + "')");
 214
 215                 OperInfo* ifo = new OperInfo;
 216                 oper_blocks[" " + name] = ifo;
 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" : "d";
 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                                 throw CoreException("Connect class must have an allow or deny mask at " + tag->getTagLocation());
 339                         }
 340                         ClassMap::iterator dupMask = newBlocksByMask.find(typeMask);
 341                         if (dupMask != newBlocksByMask.end())
 342                                 throw CoreException("Two connect classes cannot have the same mask (" + mask + ")");
 343
 344                         ConnectClass* me = parent ?
 345                                 new ConnectClass(tag, type, mask, *parent) :
 346                                 new ConnectClass(tag, type, mask);
 347
 348                         me->name = name;
 349
 350                         tag->readString("password", me->pass);
 351                         tag->readString("hash", me->hash);
 352                         me->registration_timeout = tag->getInt("timeout", me->registration_timeout);
 353                         me->pingtime = tag->getInt("pingfreq", me->pingtime);
 354                         std::string sendq;
 355                         if (tag->readString("sendq", sendq))
 356                         {
 357                                 // attempt to guess a good hard/soft sendq from a single value
 358                                 long value = atol(sendq.c_str());
 359                                 if (value > 16384)
 360                                         me->softsendqmax = value / 16;
 361                                 else
 362                                         me->softsendqmax = value;
 363                                 me->hardsendqmax = value * 8;
 364                         }
 365                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 366                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 367                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 368                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 369                         me->commandrate = tag->getInt("commandrate", me->commandrate);
 370                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 371                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 372                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 373                         me->port = tag->getInt("port", me->port);
 374                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 375                         me->limit = tag->getInt("limit", me->limit);
 376
 377                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 378                         if (oldMask != oldBlocksByMask.end())
 379                         {
 380                                 ConnectClass* old = oldMask->second;
 381                                 oldBlocksByMask.erase(oldMask);
 382                                 old->Update(me);
 383                                 delete me;
 384                                 me = old;
 385                         }
 386                         newBlocksByMask[typeMask] = me;
 387                         Classes[i] = me;
 388                 }
 389         }
 390 }
 391
 392 /** Represents a deprecated configuration tag.
 393  */
 394 struct Deprecated
 395 {
 396         /** Tag name
 397          */
 398         const char* tag;
 399         /** Tag value
 400          */
 401         const char* value;
 402         /** Reason for deprecation
 403          */
 404         const char* reason;
 405 };
 406
 407 static const Deprecated ChangedConfig[] = {
 408         {"options", "hidelinks",                "has been moved to <security:hidelinks> as of 1.2a3"},
 409         {"options", "hidewhois",                "has been moved to <security:hidewhois> as of 1.2a3"},
 410         {"options", "userstats",                "has been moved to <security:userstats> as of 1.2a3"},
 411         {"options", "customversion",    "has been moved to <security:customversion> as of 1.2a3"},
 412         {"options", "hidesplits",               "has been moved to <security:hidesplits> as of 1.2a3"},
 413         {"options", "hidebans",         "has been moved to <security:hidebans> as of 1.2a3"},
 414         {"options", "hidekills",                "has been moved to <security:hidekills> as of 1.2a3"},
 415         {"options", "operspywhois",             "has been moved to <security:operspywhois> as of 1.2a3"},
 416         {"options", "announceinvites",  "has been moved to <security:announceinvites> as of 1.2a3"},
 417         {"options", "hidemodes",                "has been moved to <security:hidemodes> as of 1.2a3"},
 418         {"options", "maxtargets",               "has been moved to <security:maxtargets> as of 1.2a3"},
 419         {"options",     "nouserdns",            "has been moved to <performance:nouserdns> as of 1.2a3"},
 420         {"options",     "maxwho",               "has been moved to <performance:maxwho> as of 1.2a3"},
 421         {"options",     "softlimit",            "has been moved to <performance:softlimit> as of 1.2a3"},
 422         {"options", "somaxconn",                "has been moved to <performance:somaxconn> as of 1.2a3"},
 423         {"options", "netbuffersize",    "has been moved to <performance:netbuffersize> as of 1.2a3"},
 424         {"options", "maxwho",           "has been moved to <performance:maxwho> as of 1.2a3"},
 425         {"options",     "loglevel",             "1.2 does not use the loglevel value. Please define <log> tags instead."},
 426         {"die",     "value",            "you need to reread your config"},
 427 };
 428
 429 void ServerConfig::Fill()
 430 {
 431         ConfigTag* options = ConfValue("options");
 432         ConfigTag* security = ConfValue("security");
 433         diepass = ConfValue("power")->getString("diepass");
 434         restartpass = ConfValue("power")->getString("restartpass");
 435         powerhash = ConfValue("power")->getString("hash");
 436         PrefixQuit = options->getString("prefixquit");
 437         SuffixQuit = options->getString("suffixquit");
 438         FixedQuit = options->getString("fixedquit");
 439         PrefixPart = options->getString("prefixpart");
 440         SuffixPart = options->getString("suffixpart");
 441         FixedPart = options->getString("fixedpart");
 442         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 443         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 444         MoronBanner = options->getString("moronbanner", "You're banned!");
 445         ServerName = ConfValue("server")->getString("name");
 446         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 447         Network = ConfValue("server")->getString("network", "Network");
 448         sid = ConfValue("server")->getString("id", "");
 449         AdminName = ConfValue("admin")->getString("name", "");
 450         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 451         AdminNick = ConfValue("admin")->getString("nick", "admin");
 452         ModPath = ConfValue("path")->getString("moduledir", MOD_PATH);
 453         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 454         MaxWhoResults = ConfValue("performance")->getInt("maxwho", 1024);
 455         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 456         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 457         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 458         UserStats = security->getString("userstats");
 459         CustomVersion = security->getString("customversion");
 460         HideSplits = security->getBool("hidesplits");
 461         HideBans = security->getBool("hidebans");
 462         HideWhoisServer = security->getString("hidewhois");
 463         HideKillsServer = security->getString("hidekills");
 464         OperSpyWhois = security->getBool("operspywhois");
 465         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 466         GenericOper = security->getBool("genericoper");
 467         NoUserDns = ConfValue("performance")->getBool("nouserdns");
 468         SyntaxHints = options->getBool("syntaxhints");
 469         CycleHosts = options->getBool("cyclehosts");
 470         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 471         FullHostInTopic = options->getBool("hostintopic");
 472         MaxTargets = security->getInt("maxtargets", 20);
 473         DefaultModes = options->getString("defaultmodes", "nt");
 474         PID = ConfValue("pid")->getString("file");
 475         WhoWasGroupSize = ConfValue("whowas")->getInt("groupsize");
 476         WhoWasMaxGroups = ConfValue("whowas")->getInt("maxgroups");
 477         WhoWasMaxKeep = ServerInstance->Duration(ConfValue("whowas")->getString("maxkeep"));
 478         DieValue = ConfValue("die")->getString("value");
 479         MaxChans = ConfValue("channels")->getInt("users", 20);
 480         OperMaxChans = ConfValue("channels")->getInt("opers", 60);
 481         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 482         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 483         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 484         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 485         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 486         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 487         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 488         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 489         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 490         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 491         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 492         InvBypassModes = options->getBool("invitebypassmodes", true);
 493
 494         range(SoftLimit, 10, ServerInstance->SE->GetMaxFds(), ServerInstance->SE->GetMaxFds(), "<performance:softlimit>");
 495         range(MaxConn, 0, SOMAXCONN, SOMAXCONN, "<performance:somaxconn>");
 496         range(MaxTargets, 1, 31, 20, "<security:maxtargets>");
 497         range(NetBufferSize, 1024, 65534, 10240, "<performance:netbuffersize>");
 498         range(MaxWhoResults, 1, 65535, 1024, "<performace:maxwho>");
 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 = TheUserUID.empty() ? ServerInstance->FindNick(TheUserUID) : NULL;
 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 }