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                         if (c->name.substr(0, 8) != "unnamed-")
 265                         {
 266                                 oldBlocksByMask["n" + c->name] = c;
 267                         }
 268                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 269                         {
 270                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 271                                 typeMask += c->host;
 272                                 oldBlocksByMask[typeMask] = c;
 273                         }
 274                 }
 275         }
 276
 277         int blk_count = config_data.count("connect");
 278         if (blk_count == 0)
 279         {
 280                 // No connect blocks found; make a trivial default block
 281                 std::vector<KeyVal>* items;
 282                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 283                 items->push_back(std::make_pair("allow", "*"));
 284                 config_data.insert(std::make_pair("connect", tag));
 285                 blk_count = 1;
 286         }
 287
 288         Classes.resize(blk_count);
 289         std::map<std::string, int> names;
 290
 291         bool try_again = true;
 292         for(int tries=0; try_again; tries++)
 293         {
 294                 try_again = false;
 295                 ConfigTagList tags = ConfTags("connect");
 296                 int i=0;
 297                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 298                 {
 299                         ConfigTag* tag = it->second;
 300                         if (Classes[i])
 301                                 continue;
 302
 303                         ConnectClass* parent = NULL;
 304                         std::string parentName = tag->getString("parent");
 305                         if (!parentName.empty())
 306                         {
 307                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 308                                 if (parentIter == names.end())
 309                                 {
 310                                         try_again = true;
 311                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 312                                         if (tries >= blk_count)
 313                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 314                                         continue;
 315                                 }
 316                                 parent = Classes[parentIter->second];
 317                         }
 318
 319                         std::string name = tag->getString("name");
 320                         std::string mask, typeMask;
 321                         char type;
 322
 323                         if (tag->readString("allow", mask, false))
 324                         {
 325                                 type = CC_ALLOW;
 326                                 typeMask = 'a' + mask;
 327                         }
 328                         else if (tag->readString("deny", mask, false))
 329                         {
 330                                 type = CC_DENY;
 331                                 typeMask = 'd' + mask;
 332                         }
 333                         else if (!name.empty())
 334                         {
 335                                 type = CC_NAMED;
 336                                 mask = name;
 337                                 typeMask = 'n' + mask;
 338                         }
 339                         else
 340                         {
 341                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 342                         }
 343
 344                         if (name.empty())
 345                         {
 346                                 name = "unnamed-" + ConvToStr(i);
 347                         }
 348                         else
 349                         {
 350                                 typeMask = 'n' + name;
 351                         }
 352
 353                         if (names.find(name) != names.end())
 354                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 355                         names[name] = i;
 356
 357                         ConnectClass* me = parent ?
 358                                 new ConnectClass(tag, type, mask, *parent) :
 359                                 new ConnectClass(tag, type, mask);
 360
 361                         me->name = name;
 362
 363                         tag->readString("password", me->pass);
 364                         tag->readString("hash", me->hash);
 365                         me->registration_timeout = tag->getInt("timeout", me->registration_timeout);
 366                         me->pingtime = tag->getInt("pingfreq", me->pingtime);
 367                         std::string sendq;
 368                         if (tag->readString("sendq", sendq))
 369                         {
 370                                 // attempt to guess a good hard/soft sendq from a single value
 371                                 long value = atol(sendq.c_str());
 372                                 if (value > 16384)
 373                                         me->softsendqmax = value / 16;
 374                                 else
 375                                         me->softsendqmax = value;
 376                                 me->hardsendqmax = value * 8;
 377                         }
 378                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 379                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 380                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 381                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 382                         me->commandrate = tag->getInt("commandrate", me->commandrate);
 383                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 384                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 385                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 386                         me->port = tag->getInt("port", me->port);
 387                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 388                         me->limit = tag->getInt("limit", me->limit);
 389
 390                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 391                         if (oldMask != oldBlocksByMask.end())
 392                         {
 393                                 ConnectClass* old = oldMask->second;
 394                                 oldBlocksByMask.erase(oldMask);
 395                                 old->Update(me);
 396                                 delete me;
 397                                 me = old;
 398                         }
 399                         Classes[i] = me;
 400                 }
 401         }
 402 }
 403
 404 /** Represents a deprecated configuration tag.
 405  */
 406 struct Deprecated
 407 {
 408         /** Tag name
 409          */
 410         const char* tag;
 411         /** Tag value
 412          */
 413         const char* value;
 414         /** Reason for deprecation
 415          */
 416         const char* reason;
 417 };
 418
 419 static const Deprecated ChangedConfig[] = {
 420         {"options", "hidelinks",                "has been moved to <security:hidelinks> as of 1.2a3"},
 421         {"options", "hidewhois",                "has been moved to <security:hidewhois> as of 1.2a3"},
 422         {"options", "userstats",                "has been moved to <security:userstats> as of 1.2a3"},
 423         {"options", "customversion",    "has been moved to <security:customversion> as of 1.2a3"},
 424         {"options", "hidesplits",               "has been moved to <security:hidesplits> as of 1.2a3"},
 425         {"options", "hidebans",         "has been moved to <security:hidebans> as of 1.2a3"},
 426         {"options", "hidekills",                "has been moved to <security:hidekills> as of 1.2a3"},
 427         {"options", "operspywhois",             "has been moved to <security:operspywhois> as of 1.2a3"},
 428         {"options", "announceinvites",  "has been moved to <security:announceinvites> as of 1.2a3"},
 429         {"options", "hidemodes",                "has been moved to <security:hidemodes> as of 1.2a3"},
 430         {"options", "maxtargets",               "has been moved to <security:maxtargets> as of 1.2a3"},
 431         {"options",     "nouserdns",            "has been moved to <performance:nouserdns> as of 1.2a3"},
 432         {"options",     "maxwho",               "has been moved to <performance:maxwho> as of 1.2a3"},
 433         {"options",     "softlimit",            "has been moved to <performance:softlimit> as of 1.2a3"},
 434         {"options", "somaxconn",                "has been moved to <performance:somaxconn> as of 1.2a3"},
 435         {"options", "netbuffersize",    "has been moved to <performance:netbuffersize> as of 1.2a3"},
 436         {"options", "maxwho",           "has been moved to <performance:maxwho> as of 1.2a3"},
 437         {"options",     "loglevel",             "1.2 does not use the loglevel value. Please define <log> tags instead."},
 438         {"die",     "value",            "you need to reread your config"},
 439 };
 440
 441 void ServerConfig::Fill()
 442 {
 443         ConfigTag* options = ConfValue("options");
 444         ConfigTag* security = ConfValue("security");
 445         diepass = ConfValue("power")->getString("diepass");
 446         restartpass = ConfValue("power")->getString("restartpass");
 447         powerhash = ConfValue("power")->getString("hash");
 448         PrefixQuit = options->getString("prefixquit");
 449         SuffixQuit = options->getString("suffixquit");
 450         FixedQuit = options->getString("fixedquit");
 451         PrefixPart = options->getString("prefixpart");
 452         SuffixPart = options->getString("suffixpart");
 453         FixedPart = options->getString("fixedpart");
 454         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 455         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 456         MoronBanner = options->getString("moronbanner", "You're banned!");
 457         ServerName = ConfValue("server")->getString("name");
 458         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 459         Network = ConfValue("server")->getString("network", "Network");
 460         sid = ConfValue("server")->getString("id", "");
 461         AdminName = ConfValue("admin")->getString("name", "");
 462         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 463         AdminNick = ConfValue("admin")->getString("nick", "admin");
 464         ModPath = ConfValue("path")->getString("moduledir", MOD_PATH);
 465         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 466         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 467         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 468         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 469         UserStats = security->getString("userstats");
 470         CustomVersion = security->getString("customversion");
 471         HideSplits = security->getBool("hidesplits");
 472         HideBans = security->getBool("hidebans");
 473         HideWhoisServer = security->getString("hidewhois");
 474         HideKillsServer = security->getString("hidekills");
 475         OperSpyWhois = security->getBool("operspywhois");
 476         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 477         GenericOper = security->getBool("genericoper");
 478         NoUserDns = ConfValue("performance")->getBool("nouserdns");
 479         SyntaxHints = options->getBool("syntaxhints");
 480         CycleHosts = options->getBool("cyclehosts");
 481         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 482         FullHostInTopic = options->getBool("hostintopic");
 483         MaxTargets = security->getInt("maxtargets", 20);
 484         DefaultModes = options->getString("defaultmodes", "nt");
 485         PID = ConfValue("pid")->getString("file");
 486         WhoWasGroupSize = ConfValue("whowas")->getInt("groupsize");
 487         WhoWasMaxGroups = ConfValue("whowas")->getInt("maxgroups");
 488         WhoWasMaxKeep = ServerInstance->Duration(ConfValue("whowas")->getString("maxkeep"));
 489         DieValue = ConfValue("die")->getString("value");
 490         MaxChans = ConfValue("channels")->getInt("users", 20);
 491         OperMaxChans = ConfValue("channels")->getInt("opers", 60);
 492         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 493         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 494         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 495         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 496         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 497         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 498         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 499         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 500         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 501         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 502         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 503         InvBypassModes = options->getBool("invitebypassmodes", true);
 504
 505         range(SoftLimit, 10, ServerInstance->SE->GetMaxFds(), ServerInstance->SE->GetMaxFds(), "<performance:softlimit>");
 506         range(MaxConn, 0, SOMAXCONN, SOMAXCONN, "<performance:somaxconn>");
 507         range(MaxTargets, 1, 31, 20, "<security:maxtargets>");
 508         range(NetBufferSize, 1024, 65534, 10240, "<performance:netbuffersize>");
 509         range(WhoWasGroupSize, 0, 10000, 10, "<whowas:groupsize>");
 510         range(WhoWasMaxGroups, 0, 1000000, 10240, "<whowas:maxgroups>");
 511         range(WhoWasMaxKeep, 3600, INT_MAX, 3600, "<whowas:maxkeep>");
 512
 513         ValidIP(DNSServer, "<dns:server>");
 514         ValidHost(ServerName, "<server:name>");
 515         if (!sid.empty() && !ServerInstance->IsSID(sid))
 516                 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.");
 517
 518         ConfigTagList tags = ConfTags("uline");
 519         for(ConfigIter i = tags.first; i != tags.second; ++i)
 520         {
 521                 ConfigTag* tag = i->second;
 522                 std::string server;
 523                 if (!tag->readString("server", server))
 524                         throw CoreException("<uline> tag missing server at " + tag->getTagLocation());
 525                 ulines[assign(server)] = tag->getBool("silent");
 526         }
 527
 528         tags = ConfTags("banlist");
 529         for(ConfigIter i = tags.first; i != tags.second; ++i)
 530         {
 531                 ConfigTag* tag = i->second;
 532                 std::string chan;
 533                 if (!tag->readString("chan", chan))
 534                         throw CoreException("<banlist> tag missing chan at " + tag->getTagLocation());
 535                 maxbans[chan] = tag->getInt("limit");
 536         }
 537
 538         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 539         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 540         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 541         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 542
 543         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 544         for (const unsigned char* p = (const unsigned char*)ConfValue("disabled")->getString("usermodes").c_str(); *p; ++p)
 545         {
 546                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid usermode ")+(char)*p+" was found.");
 547                 DisabledUModes[*p - 'A'] = 1;
 548         }
 549
 550         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 551         for (const unsigned char* p = (const unsigned char*)ConfValue("disabled")->getString("chanmodes").c_str(); *p; ++p)
 552         {
 553                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid chanmode ")+(char)*p+" was found.");
 554                 DisabledCModes[*p - 'A'] = 1;
 555         }
 556
 557         memset(HideModeLists, 0, sizeof(HideModeLists));
 558         for (const unsigned char* p = (const unsigned char*)ConfValue("security")->getString("hidemodes").c_str(); *p; ++p)
 559                 HideModeLists[*p] = true;
 560
 561         std::string v = security->getString("announceinvites");
 562
 563         if (v == "ops")
 564                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 565         else if (v == "all")
 566                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 567         else if (v == "dynamic")
 568                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 569         else
 570                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 571
 572         Limits.Finalise();
 573 }
 574
 575 // WARNING: it is not safe to use most of the codebase in this function, as it
 576 // will run in the config reader thread
 577 void ServerConfig::Read()
 578 {
 579         /* Load and parse the config file, if there are any errors then explode */
 580
 581         ParseStack stack(this);
 582         try
 583         {
 584                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 585         }
 586         catch (CoreException& err)
 587         {
 588                 valid = false;
 589                 errstr << err.GetReason();
 590         }
 591         if (valid)
 592         {
 593                 ReadFile(MOTD, ConfValue("files")->getString("motd"));
 594                 ReadFile(RULES, ConfValue("files")->getString("rules"));
 595                 DNSServer = ConfValue("dns")->getString("server");
 596                 FindDNS(DNSServer);
 597         }
 598 }
 599
 600 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 601 {
 602         valid = true;
 603
 604         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 605         try
 606         {
 607                 for (int Index = 0; Index * sizeof(Deprecated) < sizeof(ChangedConfig); Index++)
 608                 {
 609                         std::string dummy;
 610                         if (ConfValue(ChangedConfig[Index].tag)->readString(ChangedConfig[Index].value, dummy, true))
 611                                 errstr << "Your configuration contains a deprecated value: <"
 612                                         << ChangedConfig[Index].tag << ":" << ChangedConfig[Index].value << "> - " << ChangedConfig[Index].reason
 613                                         << " (at " << ConfValue(ChangedConfig[Index].tag)->getTagLocation() << ")\n";
 614                 }
 615
 616                 Fill();
 617
 618                 // Handle special items
 619                 CrossCheckOperClassType();
 620                 CrossCheckConnectBlocks(old);
 621         }
 622         catch (CoreException &ce)
 623         {
 624                 errstr << ce.GetReason();
 625         }
 626
 627         // write once here, to try it out and make sure its ok
 628         ServerInstance->WritePID(this->PID);
 629
 630         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 631         valid = errstr.str().empty();
 632
 633         /*
 634          * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 635          */
 636         if (old)
 637         {
 638                 this->ServerName = old->ServerName;
 639                 this->sid = old->sid;
 640                 this->cmdline = old->cmdline;
 641
 642                 // Same for ports... they're bound later on first run.
 643                 FailedPortList pl;
 644                 ServerInstance->BindPorts(pl);
 645                 if (pl.size())
 646                 {
 647                         errstr << "Not all your client ports could be bound.\nThe following port(s) failed to bind:\n";
 648
 649                         int j = 1;
 650                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 651                         {
 652                                 char buf[MAXBUF];
 653                                 snprintf(buf, MAXBUF, "%d.   Address: %s   Reason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 654                                 errstr << buf;
 655                         }
 656                 }
 657         }
 658
 659         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 660
 661         if (!valid)
 662                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "There were errors in your configuration file:");
 663
 664         while (errstr.good())
 665         {
 666                 std::string line;
 667                 getline(errstr, line, '\n');
 668                 if (!line.empty())
 669                 {
 670                         if (user)
 671                                 user->WriteServ("NOTICE %s :*** %s", user->nick.c_str(), line.c_str());
 672                         else
 673                                 ServerInstance->SNO->WriteGlobalSno('a', line);
 674                 }
 675
 676                 if (!old)
 677                 {
 678                         // Starting up, so print it out so it's seen. XXX this is a bit of a hack.
 679                         printf("%s\n", line.c_str());
 680                 }
 681         }
 682
 683         errstr.clear();
 684         errstr.str(std::string());
 685
 686         /* No old configuration -> initial boot, nothing more to do here */
 687         if (!old)
 688         {
 689                 if (!valid)
 690                 {
 691                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 692                 }
 693
 694                 return;
 695         }
 696
 697         // If there were errors processing configuration, don't touch modules.
 698         if (!valid)
 699                 return;
 700
 701         ApplyModules(user);
 702
 703         if (user)
 704                 user->WriteServ("NOTICE %s :*** Successfully rehashed server.", user->nick.c_str());
 705         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 706 }
 707
 708 void ServerConfig::ApplyModules(User* user)
 709 {
 710         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
 711         if (whowas)
 712                 WhowasRequest(NULL, whowas, WhowasRequest::WHOWAS_PRUNE).Send();
 713
 714         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
 715         std::vector<std::string> added_modules;
 716         std::set<std::string> removed_modules(v.begin(), v.end());
 717
 718         ConfigTagList tags = ConfTags("module");
 719         for(ConfigIter i = tags.first; i != tags.second; ++i)
 720         {
 721                 ConfigTag* tag = i->second;
 722                 std::string name;
 723                 if (tag->readString("name", name))
 724                 {
 725                         // if this module is already loaded, the erase will succeed, so we need do nothing
 726                         // otherwise, we need to add the module (which will be done later)
 727                         if (removed_modules.erase(name) == 0)
 728                                 added_modules.push_back(name);
 729                 }
 730         }
 731
 732         if (ConfValue("options")->getBool("allowhalfop") && removed_modules.erase("m_halfop.so") == 0)
 733                 added_modules.push_back("m_halfop.so");
 734
 735         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 736         {
 737                 // Don't remove cmd_*.so, just remove m_*.so
 738                 if (removing->c_str()[0] == 'c')
 739                         continue;
 740                 Module* m = ServerInstance->Modules->Find(*removing);
 741                 if (m && ServerInstance->Modules->Unload(m))
 742                 {
 743                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
 744
 745                         if (user)
 746                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
 747                         else
 748                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
 749                 }
 750                 else
 751                 {
 752                         if (user)
 753                                 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());
 754                         else
 755                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
 756                 }
 757         }
 758
 759         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 760         {
 761                 if (ServerInstance->Modules->Load(adding->c_str()))
 762                 {
 763                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 764                         if (user)
 765                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
 766                         else
 767                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 768                 }
 769                 else
 770                 {
 771                         if (user)
 772                                 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());
 773                         else
 774                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 775                 }
 776         }
 777 }
 778
 779 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
 780 {
 781         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
 782 }
 783
 784 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 785 {
 786         ConfigDataHash::iterator iter = config_data.find(tag);
 787         if (iter == config_data.end())
 788                 return NULL;
 789         return iter->second;
 790 }
 791
 792 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 793 {
 794         return config_data.equal_range(tag);
 795 }
 796
 797 /** Read the contents of a file located by `fname' into a file_cache pointed at by `F'.
 798  */
 799 bool ServerConfig::ReadFile(file_cache &F, const std::string& fname)
 800 {
 801         if (fname.empty())
 802                 return false;
 803
 804         char linebuf[MAXBUF];
 805
 806         F.clear();
 807
 808         FileWrapper file(fopen(fname.c_str(), "r"));
 809
 810         if (!file)
 811                 return false;
 812         while (!feof(file))
 813         {
 814                 if (fgets(linebuf, sizeof(linebuf), file))
 815                         linebuf[strlen(linebuf)-1] = 0;
 816                 else
 817                         *linebuf = 0;
 818
 819                 F.push_back(*linebuf ? linebuf : " ");
 820         }
 821
 822         return true;
 823 }
 824
 825 bool ServerConfig::FileExists(const char* file)
 826 {
 827         struct stat sb;
 828         if (stat(file, &sb) == -1)
 829                 return false;
 830
 831         if ((sb.st_mode & S_IFDIR) > 0)
 832                 return false;
 833
 834         FILE *input = fopen(file, "r");
 835         if (input == NULL)
 836                 return false;
 837         else
 838         {
 839                 fclose(input);
 840                 return true;
 841         }
 842 }
 843
 844 const char* ServerConfig::CleanFilename(const char* name)
 845 {
 846         const char* p = name + strlen(name);
 847         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
 848         return (p != name ? ++p : p);
 849 }
 850
 851 std::string ServerConfig::GetSID()
 852 {
 853         return sid;
 854 }
 855
 856 void ConfigReaderThread::Run()
 857 {
 858         Config->Read();
 859         done = true;
 860 }
 861
 862 void ConfigReaderThread::Finish()
 863 {
 864         ServerConfig* old = ServerInstance->Config;
 865         ServerInstance->Logs->Log("CONFIG",DEBUG,"Switching to new configuration...");
 866         ServerInstance->Logs->CloseLogs();
 867         ServerInstance->Config = this->Config;
 868         ServerInstance->Logs->OpenFileLogs();
 869         Config->Apply(old, TheUserUID);
 870
 871         if (Config->valid)
 872         {
 873                 /*
 874                  * Apply the changed configuration from the rehash.
 875                  *
 876                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 877                  * thoroughly!!!
 878                  */
 879                 ServerInstance->XLines->CheckELines();
 880                 ServerInstance->XLines->CheckELines();
 881                 ServerInstance->XLines->ApplyLines();
 882                 ServerInstance->Res->Rehash();
 883                 ServerInstance->ResetMaxBans();
 884                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 885                 User* user = ServerInstance->FindNick(TheUserUID);
 886                 FOREACH_MOD(I_OnRehash, OnRehash(user));
 887                 ServerInstance->BuildISupport();
 888
 889                 Config = old;
 890         }
 891         else
 892         {
 893                 // whoops, abort!
 894                 ServerInstance->Logs->CloseLogs();
 895                 ServerInstance->Config = old;
 896                 ServerInstance->Logs->OpenFileLogs();
 897         }
 898 }