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->name = name;
 218                 ifo->type_block = tag;
 219
 220                 std::string classname;
 221                 irc::spacesepstream str(tag->getString("classes"));
 222                 while (str.GetToken(classname))
 223                 {
 224                         LocalIndex::iterator cls = operclass.find(classname);
 225                         if (cls == operclass.end())
 226                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 227                         ifo->class_blocks.push_back(cls->second);
 228                 }
 229         }
 230
 231         tags = ConfTags("oper");
 232         for(ConfigIter i = tags.first; i != tags.second; ++i)
 233         {
 234                 ConfigTag* tag = i->second;
 235
 236                 std::string name = tag->getString("name");
 237                 if (name.empty())
 238                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 239
 240                 std::string type = tag->getString("type");
 241                 OperIndex::iterator tblk = oper_blocks.find(" " + type);
 242                 if (tblk == oper_blocks.end())
 243                         throw CoreException("Oper block " + name + " has missing type " + type);
 244                 if (oper_blocks.find(name) != oper_blocks.end())
 245                         throw CoreException("Duplicate oper block with name " + name);
 246
 247                 OperInfo* ifo = new OperInfo;
 248                 ifo->name = type;
 249                 ifo->oper_block = tag;
 250                 ifo->type_block = tblk->second->type_block;
 251                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 252                 oper_blocks[name] = ifo;
 253         }
 254 }
 255
 256 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 257 {
 258         typedef std::map<std::string, ConnectClass*> ClassMap;
 259         ClassMap oldBlocksByMask;
 260         if (current)
 261         {
 262                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 263                 {
 264                         ConnectClass* c = *i;
 265                         std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 266                         typeMask += c->host;
 267                         oldBlocksByMask[typeMask] = c;
 268                 }
 269         }
 270
 271         int blk_count = config_data.count("connect");
 272         if (blk_count == 0)
 273         {
 274                 // No connect blocks found; make a trivial default block
 275                 std::vector<KeyVal>* items;
 276                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 277                 items->push_back(std::make_pair("allow", "*"));
 278                 config_data.insert(std::make_pair("connect", tag));
 279                 blk_count = 1;
 280         }
 281
 282         ClassMap newBlocksByMask;
 283         Classes.resize(blk_count);
 284         std::map<std::string, int> names;
 285
 286         bool try_again = true;
 287         for(int tries=0; try_again; tries++)
 288         {
 289                 try_again = false;
 290                 ConfigTagList tags = ConfTags("connect");
 291                 int i=0;
 292                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 293                 {
 294                         ConfigTag* tag = it->second;
 295                         if (Classes[i])
 296                                 continue;
 297
 298                         ConnectClass* parent = NULL;
 299                         std::string parentName = tag->getString("parent");
 300                         if (!parentName.empty())
 301                         {
 302                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 303                                 if (parentIter == names.end())
 304                                 {
 305                                         try_again = true;
 306                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 307                                         if (tries >= blk_count)
 308                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block " + ConvToStr(i));
 309                                         continue;
 310                                 }
 311                                 parent = Classes[parentIter->second];
 312                         }
 313
 314                         std::string name = tag->getString("name");
 315                         if (name.empty())
 316                         {
 317                                 name = "unnamed-" + ConvToStr(i);
 318                         }
 319
 320                         if (names.find(name) != names.end())
 321                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 322                         names[name] = i;
 323
 324                         std::string mask, typeMask;
 325                         char type;
 326
 327                         if (tag->readString("allow", mask, false))
 328                         {
 329                                 type = CC_ALLOW;
 330                                 typeMask = 'a' + mask;
 331                         }
 332                         else if (tag->readString("deny", mask, false))
 333                         {
 334                                 type = CC_DENY;
 335                                 typeMask = 'd' + mask;
 336                         }
 337                         else
 338                         {
 339                                 throw CoreException("Connect class must have an allow or deny mask at " + tag->getTagLocation());
 340                         }
 341                         ClassMap::iterator dupMask = newBlocksByMask.find(typeMask);
 342                         if (dupMask != newBlocksByMask.end())
 343                                 throw CoreException("Two connect classes cannot have the same mask (" + mask + ")");
 344
 345                         ConnectClass* me = parent ?
 346                                 new ConnectClass(tag, type, mask, *parent) :
 347                                 new ConnectClass(tag, type, mask);
 348
 349                         me->name = name;
 350
 351                         tag->readString("password", me->pass);
 352                         tag->readString("hash", me->hash);
 353                         me->registration_timeout = tag->getInt("timeout", me->registration_timeout);
 354                         me->pingtime = tag->getInt("pingfreq", me->pingtime);
 355                         std::string sendq;
 356                         if (tag->readString("sendq", sendq))
 357                         {
 358                                 // attempt to guess a good hard/soft sendq from a single value
 359                                 long value = atol(sendq.c_str());
 360                                 if (value > 16384)
 361                                         me->softsendqmax = value / 16;
 362                                 else
 363                                         me->softsendqmax = value;
 364                                 me->hardsendqmax = value * 8;
 365                         }
 366                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 367                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 368                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 369                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 370                         me->commandrate = tag->getInt("commandrate", me->commandrate);
 371                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 372                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 373                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 374                         me->port = tag->getInt("port", me->port);
 375                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 376                         me->limit = tag->getInt("limit", me->limit);
 377
 378                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 379                         if (oldMask != oldBlocksByMask.end())
 380                         {
 381                                 ConnectClass* old = oldMask->second;
 382                                 oldBlocksByMask.erase(oldMask);
 383                                 old->Update(me);
 384                                 delete me;
 385                                 me = old;
 386                         }
 387                         newBlocksByMask[typeMask] = me;
 388                         Classes[i] = me;
 389                 }
 390         }
 391 }
 392
 393 /** Represents a deprecated configuration tag.
 394  */
 395 struct Deprecated
 396 {
 397         /** Tag name
 398          */
 399         const char* tag;
 400         /** Tag value
 401          */
 402         const char* value;
 403         /** Reason for deprecation
 404          */
 405         const char* reason;
 406 };
 407
 408 static const Deprecated ChangedConfig[] = {
 409         {"options", "hidelinks",                "has been moved to <security:hidelinks> as of 1.2a3"},
 410         {"options", "hidewhois",                "has been moved to <security:hidewhois> as of 1.2a3"},
 411         {"options", "userstats",                "has been moved to <security:userstats> as of 1.2a3"},
 412         {"options", "customversion",    "has been moved to <security:customversion> as of 1.2a3"},
 413         {"options", "hidesplits",               "has been moved to <security:hidesplits> as of 1.2a3"},
 414         {"options", "hidebans",         "has been moved to <security:hidebans> as of 1.2a3"},
 415         {"options", "hidekills",                "has been moved to <security:hidekills> as of 1.2a3"},
 416         {"options", "operspywhois",             "has been moved to <security:operspywhois> as of 1.2a3"},
 417         {"options", "announceinvites",  "has been moved to <security:announceinvites> as of 1.2a3"},
 418         {"options", "hidemodes",                "has been moved to <security:hidemodes> as of 1.2a3"},
 419         {"options", "maxtargets",               "has been moved to <security:maxtargets> as of 1.2a3"},
 420         {"options",     "nouserdns",            "has been moved to <performance:nouserdns> as of 1.2a3"},
 421         {"options",     "maxwho",               "has been moved to <performance:maxwho> as of 1.2a3"},
 422         {"options",     "softlimit",            "has been moved to <performance:softlimit> as of 1.2a3"},
 423         {"options", "somaxconn",                "has been moved to <performance:somaxconn> as of 1.2a3"},
 424         {"options", "netbuffersize",    "has been moved to <performance:netbuffersize> as of 1.2a3"},
 425         {"options", "maxwho",           "has been moved to <performance:maxwho> as of 1.2a3"},
 426         {"options",     "loglevel",             "1.2 does not use the loglevel value. Please define <log> tags instead."},
 427         {"die",     "value",            "you need to reread your config"},
 428 };
 429
 430 void ServerConfig::Fill()
 431 {
 432         ConfigTag* options = ConfValue("options");
 433         ConfigTag* security = ConfValue("security");
 434         diepass = ConfValue("power")->getString("diepass");
 435         restartpass = ConfValue("power")->getString("restartpass");
 436         powerhash = ConfValue("power")->getString("hash");
 437         PrefixQuit = options->getString("prefixquit");
 438         SuffixQuit = options->getString("suffixquit");
 439         FixedQuit = options->getString("fixedquit");
 440         PrefixPart = options->getString("prefixpart");
 441         SuffixPart = options->getString("suffixpart");
 442         FixedPart = options->getString("fixedpart");
 443         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 444         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 445         MoronBanner = options->getString("moronbanner", "You're banned!");
 446         ServerName = ConfValue("server")->getString("name");
 447         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 448         Network = ConfValue("server")->getString("network", "Network");
 449         sid = ConfValue("server")->getString("id", "");
 450         AdminName = ConfValue("admin")->getString("name", "");
 451         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 452         AdminNick = ConfValue("admin")->getString("nick", "admin");
 453         ModPath = ConfValue("path")->getString("moduledir", MOD_PATH);
 454         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 455         MaxWhoResults = ConfValue("performance")->getInt("maxwho", 1024);
 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(MaxWhoResults, 1, 65535, 1024, "<performace:maxwho>");
 500         range(WhoWasGroupSize, 0, 10000, 10, "<whowas:groupsize>");
 501         range(WhoWasMaxGroups, 0, 1000000, 10240, "<whowas:maxgroups>");
 502         range(WhoWasMaxKeep, 3600, INT_MAX, 3600, "<whowas:maxkeep>");
 503
 504         ValidIP(DNSServer, "<dns:server>");
 505         ValidHost(ServerName, "<server:name>");
 506         if (!sid.empty() && !ServerInstance->IsSID(sid))
 507                 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.");
 508
 509         ConfigTagList tags = ConfTags("uline");
 510         for(ConfigIter i = tags.first; i != tags.second; ++i)
 511         {
 512                 ConfigTag* tag = i->second;
 513                 std::string server;
 514                 if (!tag->readString("server", server))
 515                         throw CoreException("<uline> tag missing server at " + tag->getTagLocation());
 516                 ulines[assign(server)] = tag->getBool("silent");
 517         }
 518
 519         tags = ConfTags("banlist");
 520         for(ConfigIter i = tags.first; i != tags.second; ++i)
 521         {
 522                 ConfigTag* tag = i->second;
 523                 std::string chan;
 524                 if (!tag->readString("chan", chan))
 525                         throw CoreException("<banlist> tag missing chan at " + tag->getTagLocation());
 526                 maxbans[chan] = tag->getInt("limit");
 527         }
 528
 529         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 530         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 531         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 532         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 533
 534         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 535         for (const unsigned char* p = (const unsigned char*)ConfValue("disabled")->getString("usermodes").c_str(); *p; ++p)
 536         {
 537                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid usermode ")+(char)*p+" was found.");
 538                 DisabledUModes[*p - 'A'] = 1;
 539         }
 540
 541         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 542         for (const unsigned char* p = (const unsigned char*)ConfValue("disabled")->getString("chanmodes").c_str(); *p; ++p)
 543         {
 544                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid chanmode ")+(char)*p+" was found.");
 545                 DisabledCModes[*p - 'A'] = 1;
 546         }
 547
 548         memset(HideModeLists, 0, sizeof(HideModeLists));
 549         for (const unsigned char* p = (const unsigned char*)ConfValue("security")->getString("hidemodes").c_str(); *p; ++p)
 550                 HideModeLists[*p] = true;
 551
 552         std::string v = security->getString("announceinvites");
 553
 554         if (v == "ops")
 555                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 556         else if (v == "all")
 557                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 558         else if (v == "dynamic")
 559                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 560         else
 561                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 562
 563         Limits.Finalise();
 564 }
 565
 566 // WARNING: it is not safe to use most of the codebase in this function, as it
 567 // will run in the config reader thread
 568 void ServerConfig::Read()
 569 {
 570         /* Load and parse the config file, if there are any errors then explode */
 571
 572         ParseStack stack(this);
 573         try
 574         {
 575                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 576         }
 577         catch (CoreException& err)
 578         {
 579                 valid = false;
 580                 errstr << err.GetReason();
 581         }
 582         if (valid)
 583         {
 584                 ReadFile(MOTD, ConfValue("files")->getString("motd"));
 585                 ReadFile(RULES, ConfValue("files")->getString("rules"));
 586                 DNSServer = ConfValue("dns")->getString("server");
 587                 FindDNS(DNSServer);
 588         }
 589 }
 590
 591 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 592 {
 593         valid = true;
 594
 595         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 596         try
 597         {
 598                 for (int Index = 0; Index * sizeof(Deprecated) < sizeof(ChangedConfig); Index++)
 599                 {
 600                         std::string dummy;
 601                         if (ConfValue(ChangedConfig[Index].tag)->readString(ChangedConfig[Index].value, dummy, true))
 602                                 errstr << "Your configuration contains a deprecated value: <"
 603                                         << ChangedConfig[Index].tag << ":" << ChangedConfig[Index].value << "> - " << ChangedConfig[Index].reason
 604                                         << " (at " << ConfValue(ChangedConfig[Index].tag)->getTagLocation() << ")\n";
 605                 }
 606
 607                 Fill();
 608
 609                 // Handle special items
 610                 CrossCheckOperClassType();
 611                 CrossCheckConnectBlocks(old);
 612         }
 613         catch (CoreException &ce)
 614         {
 615                 errstr << ce.GetReason();
 616         }
 617
 618         // write once here, to try it out and make sure its ok
 619         ServerInstance->WritePID(this->PID);
 620
 621         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 622         valid = errstr.str().empty();
 623
 624         /*
 625          * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 626          */
 627         if (old)
 628         {
 629                 this->ServerName = old->ServerName;
 630                 this->sid = old->sid;
 631                 this->cmdline = old->cmdline;
 632
 633                 // Same for ports... they're bound later on first run.
 634                 FailedPortList pl;
 635                 ServerInstance->BindPorts(pl);
 636                 if (pl.size())
 637                 {
 638                         errstr << "Not all your client ports could be bound.\nThe following port(s) failed to bind:\n";
 639
 640                         int j = 1;
 641                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 642                         {
 643                                 char buf[MAXBUF];
 644                                 snprintf(buf, MAXBUF, "%d.   Address: %s   Reason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 645                                 errstr << buf;
 646                         }
 647                 }
 648         }
 649
 650         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 651
 652         if (!valid)
 653                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "There were errors in your configuration file:");
 654
 655         while (errstr.good())
 656         {
 657                 std::string line;
 658                 getline(errstr, line, '\n');
 659                 if (!line.empty())
 660                 {
 661                         if (user)
 662                                 user->WriteServ("NOTICE %s :*** %s", user->nick.c_str(), line.c_str());
 663                         else
 664                                 ServerInstance->SNO->WriteGlobalSno('a', line);
 665                 }
 666
 667                 if (!old)
 668                 {
 669                         // Starting up, so print it out so it's seen. XXX this is a bit of a hack.
 670                         printf("%s\n", line.c_str());
 671                 }
 672         }
 673
 674         errstr.clear();
 675         errstr.str(std::string());
 676
 677         /* No old configuration -> initial boot, nothing more to do here */
 678         if (!old)
 679         {
 680                 if (!valid)
 681                 {
 682                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 683                 }
 684
 685                 return;
 686         }
 687
 688         // If there were errors processing configuration, don't touch modules.
 689         if (!valid)
 690                 return;
 691
 692         ApplyModules(user);
 693
 694         if (user)
 695                 user->WriteServ("NOTICE %s :*** Successfully rehashed server.", user->nick.c_str());
 696         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 697 }
 698
 699 void ServerConfig::ApplyModules(User* user)
 700 {
 701         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
 702         if (whowas)
 703                 WhowasRequest(NULL, whowas, WhowasRequest::WHOWAS_PRUNE).Send();
 704
 705         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
 706         std::vector<std::string> added_modules;
 707         std::set<std::string> removed_modules(v.begin(), v.end());
 708
 709         ConfigTagList tags = ConfTags("module");
 710         for(ConfigIter i = tags.first; i != tags.second; ++i)
 711         {
 712                 ConfigTag* tag = i->second;
 713                 std::string name;
 714                 if (tag->readString("name", name))
 715                 {
 716                         // if this module is already loaded, the erase will succeed, so we need do nothing
 717                         // otherwise, we need to add the module (which will be done later)
 718                         if (removed_modules.erase(name) == 0)
 719                                 added_modules.push_back(name);
 720                 }
 721         }
 722
 723         if (ConfValue("options")->getBool("allowhalfop") && removed_modules.erase("m_halfop.so") == 0)
 724                 added_modules.push_back("m_halfop.so");
 725
 726         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 727         {
 728                 // Don't remove cmd_*.so, just remove m_*.so
 729                 if (removing->c_str()[0] == 'c')
 730                         continue;
 731                 Module* m = ServerInstance->Modules->Find(*removing);
 732                 if (m && ServerInstance->Modules->Unload(m))
 733                 {
 734                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
 735
 736                         if (user)
 737                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
 738                         else
 739                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
 740                 }
 741                 else
 742                 {
 743                         if (user)
 744                                 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());
 745                         else
 746                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
 747                 }
 748         }
 749
 750         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 751         {
 752                 if (ServerInstance->Modules->Load(adding->c_str()))
 753                 {
 754                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 755                         if (user)
 756                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
 757                         else
 758                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 759                 }
 760                 else
 761                 {
 762                         if (user)
 763                                 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());
 764                         else
 765                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 766                 }
 767         }
 768 }
 769
 770 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
 771 {
 772         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
 773 }
 774
 775 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 776 {
 777         ConfigDataHash::iterator iter = config_data.find(tag);
 778         if (iter == config_data.end())
 779                 return NULL;
 780         return iter->second;
 781 }
 782
 783 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 784 {
 785         return config_data.equal_range(tag);
 786 }
 787
 788 /** Read the contents of a file located by `fname' into a file_cache pointed at by `F'.
 789  */
 790 bool ServerConfig::ReadFile(file_cache &F, const std::string& fname)
 791 {
 792         if (fname.empty())
 793                 return false;
 794
 795         char linebuf[MAXBUF];
 796
 797         F.clear();
 798
 799         FileWrapper file(fopen(fname.c_str(), "r"));
 800
 801         if (!file)
 802                 return false;
 803         while (!feof(file))
 804         {
 805                 if (fgets(linebuf, sizeof(linebuf), file))
 806                         linebuf[strlen(linebuf)-1] = 0;
 807                 else
 808                         *linebuf = 0;
 809
 810                 F.push_back(*linebuf ? linebuf : " ");
 811         }
 812
 813         return true;
 814 }
 815
 816 bool ServerConfig::FileExists(const char* file)
 817 {
 818         struct stat sb;
 819         if (stat(file, &sb) == -1)
 820                 return false;
 821
 822         if ((sb.st_mode & S_IFDIR) > 0)
 823                 return false;
 824
 825         FILE *input = fopen(file, "r");
 826         if (input == NULL)
 827                 return false;
 828         else
 829         {
 830                 fclose(input);
 831                 return true;
 832         }
 833 }
 834
 835 const char* ServerConfig::CleanFilename(const char* name)
 836 {
 837         const char* p = name + strlen(name);
 838         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
 839         return (p != name ? ++p : p);
 840 }
 841
 842 std::string ServerConfig::GetSID()
 843 {
 844         return sid;
 845 }
 846
 847 void ConfigReaderThread::Run()
 848 {
 849         Config->Read();
 850         done = true;
 851 }
 852
 853 void ConfigReaderThread::Finish()
 854 {
 855         ServerConfig* old = ServerInstance->Config;
 856         ServerInstance->Logs->Log("CONFIG",DEBUG,"Switching to new configuration...");
 857         ServerInstance->Logs->CloseLogs();
 858         ServerInstance->Config = this->Config;
 859         ServerInstance->Logs->OpenFileLogs();
 860         Config->Apply(old, TheUserUID);
 861
 862         if (Config->valid)
 863         {
 864                 /*
 865                  * Apply the changed configuration from the rehash.
 866                  *
 867                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 868                  * thoroughly!!!
 869                  */
 870                 ServerInstance->XLines->CheckELines();
 871                 ServerInstance->XLines->CheckELines();
 872                 ServerInstance->XLines->ApplyLines();
 873                 ServerInstance->Res->Rehash();
 874                 ServerInstance->ResetMaxBans();
 875                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 876                 User* user = ServerInstance->FindNick(TheUserUID);
 877                 FOREACH_MOD(I_OnRehash, OnRehash(user));
 878                 ServerInstance->BuildISupport();
 879
 880                 Config = old;
 881         }
 882         else
 883         {
 884                 // whoops, abort!
 885                 ServerInstance->Logs->CloseLogs();
 886                 ServerInstance->Config = old;
 887                 ServerInstance->Logs->OpenFileLogs();
 888         }
 889 }