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::vector<std::string> data;
  55         std::string token;
  56         while (out >> token)
  57                 data.push_back(token);
  58         sort(data.begin(), data.end());
  59
  60         std::string line5;
  61         isupport.clear();
  62         for(unsigned int i=0; i < data.size(); i++)
  63         {
  64                 token = data[i];
  65                 line5 = line5 + token + " ";
  66                 if (i % 13 == 12)
  67                 {
  68                         line5.append(":are supported by this server");
  69                         isupport.push_back(line5);
  70                         line5.clear();
  71                 }
  72         }
  73         if (!line5.empty())
  74         {
  75                 line5.append(":are supported by this server");
  76                 isupport.push_back(line5);
  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                         if (c->name.substr(0, 8) != "unnamed-")
 266                         {
 267                                 oldBlocksByMask["n" + c->name] = c;
 268                         }
 269                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 270                         {
 271                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 272                                 typeMask += c->host;
 273                                 oldBlocksByMask[typeMask] = c;
 274                         }
 275                 }
 276         }
 277
 278         int blk_count = config_data.count("connect");
 279         if (blk_count == 0)
 280         {
 281                 // No connect blocks found; make a trivial default block
 282                 std::vector<KeyVal>* items;
 283                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 284                 items->push_back(std::make_pair("allow", "*"));
 285                 config_data.insert(std::make_pair("connect", tag));
 286                 blk_count = 1;
 287         }
 288
 289         Classes.resize(blk_count);
 290         std::map<std::string, int> names;
 291
 292         bool try_again = true;
 293         for(int tries=0; try_again; tries++)
 294         {
 295                 try_again = false;
 296                 ConfigTagList tags = ConfTags("connect");
 297                 int i=0;
 298                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 299                 {
 300                         ConfigTag* tag = it->second;
 301                         if (Classes[i])
 302                                 continue;
 303
 304                         ConnectClass* parent = NULL;
 305                         std::string parentName = tag->getString("parent");
 306                         if (!parentName.empty())
 307                         {
 308                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 309                                 if (parentIter == names.end())
 310                                 {
 311                                         try_again = true;
 312                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 313                                         if (tries >= blk_count)
 314                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 315                                         continue;
 316                                 }
 317                                 parent = Classes[parentIter->second];
 318                         }
 319
 320                         std::string name = tag->getString("name");
 321                         std::string mask, typeMask;
 322                         char type;
 323
 324                         if (tag->readString("allow", mask, false))
 325                         {
 326                                 type = CC_ALLOW;
 327                                 typeMask = 'a' + mask;
 328                         }
 329                         else if (tag->readString("deny", mask, false))
 330                         {
 331                                 type = CC_DENY;
 332                                 typeMask = 'd' + mask;
 333                         }
 334                         else if (!name.empty())
 335                         {
 336                                 type = CC_NAMED;
 337                                 mask = name;
 338                                 typeMask = 'n' + mask;
 339                         }
 340                         else
 341                         {
 342                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 343                         }
 344
 345                         if (name.empty())
 346                         {
 347                                 name = "unnamed-" + ConvToStr(i);
 348                         }
 349                         else
 350                         {
 351                                 typeMask = 'n' + name;
 352                         }
 353
 354                         if (names.find(name) != names.end())
 355                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 356                         names[name] = i;
 357
 358                         ConnectClass* me = parent ?
 359                                 new ConnectClass(tag, type, mask, *parent) :
 360                                 new ConnectClass(tag, type, mask);
 361
 362                         me->name = name;
 363
 364                         me->registration_timeout = tag->getInt("timeout", me->registration_timeout);
 365                         me->pingtime = tag->getInt("pingfreq", me->pingtime);
 366                         std::string sendq;
 367                         if (tag->readString("sendq", sendq))
 368                         {
 369                                 // attempt to guess a good hard/soft sendq from a single value
 370                                 long value = atol(sendq.c_str());
 371                                 if (value > 16384)
 372                                         me->softsendqmax = value / 16;
 373                                 else
 374                                         me->softsendqmax = value;
 375                                 me->hardsendqmax = value * 8;
 376                         }
 377                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 378                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 379                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 380                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 381                         me->commandrate = tag->getInt("commandrate", me->commandrate);
 382                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 383                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 384                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 385                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 386                         me->limit = tag->getInt("limit", me->limit);
 387
 388                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 389                         if (oldMask != oldBlocksByMask.end())
 390                         {
 391                                 ConnectClass* old = oldMask->second;
 392                                 oldBlocksByMask.erase(oldMask);
 393                                 old->Update(me);
 394                                 delete me;
 395                                 me = old;
 396                         }
 397                         Classes[i] = me;
 398                 }
 399         }
 400 }
 401
 402 /** Represents a deprecated configuration tag.
 403  */
 404 struct Deprecated
 405 {
 406         /** Tag name
 407          */
 408         const char* tag;
 409         /** Tag value
 410          */
 411         const char* value;
 412         /** Reason for deprecation
 413          */
 414         const char* reason;
 415 };
 416
 417 static const Deprecated ChangedConfig[] = {
 418         {"options", "hidelinks",                "has been moved to <security:hidelinks> as of 1.2a3"},
 419         {"options", "hidewhois",                "has been moved to <security:hidewhois> as of 1.2a3"},
 420         {"options", "userstats",                "has been moved to <security:userstats> as of 1.2a3"},
 421         {"options", "customversion",    "has been moved to <security:customversion> as of 1.2a3"},
 422         {"options", "hidesplits",               "has been moved to <security:hidesplits> as of 1.2a3"},
 423         {"options", "hidebans",         "has been moved to <security:hidebans> as of 1.2a3"},
 424         {"options", "hidekills",                "has been moved to <security:hidekills> as of 1.2a3"},
 425         {"options", "operspywhois",             "has been moved to <security:operspywhois> as of 1.2a3"},
 426         {"options", "announceinvites",  "has been moved to <security:announceinvites> as of 1.2a3"},
 427         {"options", "hidemodes",                "has been moved to <security:hidemodes> as of 1.2a3"},
 428         {"options", "maxtargets",               "has been moved to <security:maxtargets> as of 1.2a3"},
 429         {"options",     "nouserdns",            "has been moved to <performance:nouserdns> as of 1.2a3"},
 430         {"options",     "maxwho",               "has been moved to <performance:maxwho> as of 1.2a3"},
 431         {"options",     "softlimit",            "has been moved to <performance:softlimit> as of 1.2a3"},
 432         {"options", "somaxconn",                "has been moved to <performance:somaxconn> as of 1.2a3"},
 433         {"options", "netbuffersize",    "has been moved to <performance:netbuffersize> as of 1.2a3"},
 434         {"options", "maxwho",           "has been moved to <performance:maxwho> as of 1.2a3"},
 435         {"options",     "loglevel",             "1.2 does not use the loglevel value. Please define <log> tags instead."},
 436         {"die",     "value",            "you need to reread your config"},
 437 };
 438
 439 void ServerConfig::Fill()
 440 {
 441         ConfigTag* options = ConfValue("options");
 442         ConfigTag* security = ConfValue("security");
 443         diepass = ConfValue("power")->getString("diepass");
 444         restartpass = ConfValue("power")->getString("restartpass");
 445         powerhash = ConfValue("power")->getString("hash");
 446         PrefixQuit = options->getString("prefixquit");
 447         SuffixQuit = options->getString("suffixquit");
 448         FixedQuit = options->getString("fixedquit");
 449         PrefixPart = options->getString("prefixpart");
 450         SuffixPart = options->getString("suffixpart");
 451         FixedPart = options->getString("fixedpart");
 452         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 453         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 454         MoronBanner = options->getString("moronbanner", "You're banned!");
 455         ServerName = ConfValue("server")->getString("name");
 456         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 457         Network = ConfValue("server")->getString("network", "Network");
 458         sid = ConfValue("server")->getString("id", "");
 459         AdminName = ConfValue("admin")->getString("name", "");
 460         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 461         AdminNick = ConfValue("admin")->getString("nick", "admin");
 462         ModPath = ConfValue("path")->getString("moduledir", MOD_PATH);
 463         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 464         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 465         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 466         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 467         UserStats = security->getString("userstats");
 468         CustomVersion = security->getString("customversion");
 469         HideSplits = security->getBool("hidesplits");
 470         HideBans = security->getBool("hidebans");
 471         HideWhoisServer = security->getString("hidewhois");
 472         HideKillsServer = security->getString("hidekills");
 473         OperSpyWhois = security->getBool("operspywhois");
 474         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 475         GenericOper = security->getBool("genericoper");
 476         NoUserDns = ConfValue("performance")->getBool("nouserdns");
 477         SyntaxHints = options->getBool("syntaxhints");
 478         CycleHosts = options->getBool("cyclehosts");
 479         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 480         FullHostInTopic = options->getBool("hostintopic");
 481         MaxTargets = security->getInt("maxtargets", 20);
 482         DefaultModes = options->getString("defaultmodes", "nt");
 483         PID = ConfValue("pid")->getString("file");
 484         WhoWasGroupSize = ConfValue("whowas")->getInt("groupsize");
 485         WhoWasMaxGroups = ConfValue("whowas")->getInt("maxgroups");
 486         WhoWasMaxKeep = ServerInstance->Duration(ConfValue("whowas")->getString("maxkeep"));
 487         DieValue = ConfValue("die")->getString("value");
 488         MaxChans = ConfValue("channels")->getInt("users", 20);
 489         OperMaxChans = ConfValue("channels")->getInt("opers", 60);
 490         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 491         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 492         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 493         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 494         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 495         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 496         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 497         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 498         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 499         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 500         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 501         InvBypassModes = options->getBool("invitebypassmodes", true);
 502
 503         range(SoftLimit, 10, ServerInstance->SE->GetMaxFds(), ServerInstance->SE->GetMaxFds(), "<performance:softlimit>");
 504         range(MaxConn, 0, SOMAXCONN, SOMAXCONN, "<performance:somaxconn>");
 505         range(MaxTargets, 1, 31, 20, "<security:maxtargets>");
 506         range(NetBufferSize, 1024, 65534, 10240, "<performance:netbuffersize>");
 507         range(WhoWasGroupSize, 0, 10000, 10, "<whowas:groupsize>");
 508         range(WhoWasMaxGroups, 0, 1000000, 10240, "<whowas:maxgroups>");
 509         range(WhoWasMaxKeep, 3600, INT_MAX, 3600, "<whowas:maxkeep>");
 510
 511         ValidIP(DNSServer, "<dns:server>");
 512         ValidHost(ServerName, "<server:name>");
 513         if (!sid.empty() && !ServerInstance->IsSID(sid))
 514                 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.");
 515
 516         ConfigTagList tags = ConfTags("uline");
 517         for(ConfigIter i = tags.first; i != tags.second; ++i)
 518         {
 519                 ConfigTag* tag = i->second;
 520                 std::string server;
 521                 if (!tag->readString("server", server))
 522                         throw CoreException("<uline> tag missing server at " + tag->getTagLocation());
 523                 ulines[assign(server)] = tag->getBool("silent");
 524         }
 525
 526         tags = ConfTags("banlist");
 527         for(ConfigIter i = tags.first; i != tags.second; ++i)
 528         {
 529                 ConfigTag* tag = i->second;
 530                 std::string chan;
 531                 if (!tag->readString("chan", chan))
 532                         throw CoreException("<banlist> tag missing chan at " + tag->getTagLocation());
 533                 maxbans[chan] = tag->getInt("limit");
 534         }
 535
 536         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 537         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 538         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 539         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 540
 541         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 542         for (const unsigned char* p = (const unsigned char*)ConfValue("disabled")->getString("usermodes").c_str(); *p; ++p)
 543         {
 544                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid usermode ")+(char)*p+" was found.");
 545                 DisabledUModes[*p - 'A'] = 1;
 546         }
 547
 548         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 549         for (const unsigned char* p = (const unsigned char*)ConfValue("disabled")->getString("chanmodes").c_str(); *p; ++p)
 550         {
 551                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid chanmode ")+(char)*p+" was found.");
 552                 DisabledCModes[*p - 'A'] = 1;
 553         }
 554
 555         memset(HideModeLists, 0, sizeof(HideModeLists));
 556         for (const unsigned char* p = (const unsigned char*)ConfValue("security")->getString("hidemodes").c_str(); *p; ++p)
 557                 HideModeLists[*p] = true;
 558
 559         std::string v = security->getString("announceinvites");
 560
 561         if (v == "ops")
 562                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 563         else if (v == "all")
 564                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 565         else if (v == "dynamic")
 566                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 567         else
 568                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 569
 570         Limits.Finalise();
 571 }
 572
 573 // WARNING: it is not safe to use most of the codebase in this function, as it
 574 // will run in the config reader thread
 575 void ServerConfig::Read()
 576 {
 577         /* Load and parse the config file, if there are any errors then explode */
 578
 579         ParseStack stack(this);
 580         try
 581         {
 582                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 583         }
 584         catch (CoreException& err)
 585         {
 586                 valid = false;
 587                 errstr << err.GetReason();
 588         }
 589         if (valid)
 590         {
 591                 DNSServer = ConfValue("dns")->getString("server");
 592                 FindDNS(DNSServer);
 593         }
 594 }
 595
 596 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 597 {
 598         valid = true;
 599
 600         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 601         try
 602         {
 603                 for (int Index = 0; Index * sizeof(Deprecated) < sizeof(ChangedConfig); Index++)
 604                 {
 605                         std::string dummy;
 606                         if (ConfValue(ChangedConfig[Index].tag)->readString(ChangedConfig[Index].value, dummy, true))
 607                                 errstr << "Your configuration contains a deprecated value: <"
 608                                         << ChangedConfig[Index].tag << ":" << ChangedConfig[Index].value << "> - " << ChangedConfig[Index].reason
 609                                         << " (at " << ConfValue(ChangedConfig[Index].tag)->getTagLocation() << ")\n";
 610                 }
 611
 612                 Fill();
 613
 614                 // Handle special items
 615                 CrossCheckOperClassType();
 616                 CrossCheckConnectBlocks(old);
 617         }
 618         catch (CoreException &ce)
 619         {
 620                 errstr << ce.GetReason();
 621         }
 622
 623         // write once here, to try it out and make sure its ok
 624         ServerInstance->WritePID(this->PID);
 625
 626         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 627         valid = errstr.str().empty();
 628
 629         /*
 630          * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 631          */
 632         if (old)
 633         {
 634                 this->ServerName = old->ServerName;
 635                 this->sid = old->sid;
 636                 this->cmdline = old->cmdline;
 637
 638                 // Same for ports... they're bound later on first run.
 639                 FailedPortList pl;
 640                 ServerInstance->BindPorts(pl);
 641                 if (pl.size())
 642                 {
 643                         errstr << "Not all your client ports could be bound.\nThe following port(s) failed to bind:\n";
 644
 645                         int j = 1;
 646                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 647                         {
 648                                 char buf[MAXBUF];
 649                                 snprintf(buf, MAXBUF, "%d.   Address: %s   Reason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 650                                 errstr << buf;
 651                         }
 652                 }
 653         }
 654
 655         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 656
 657         if (!valid)
 658                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "There were errors in your configuration file:");
 659
 660         while (errstr.good())
 661         {
 662                 std::string line;
 663                 getline(errstr, line, '\n');
 664                 if (!line.empty())
 665                 {
 666                         if (user)
 667                                 user->WriteServ("NOTICE %s :*** %s", user->nick.c_str(), line.c_str());
 668                         else
 669                                 ServerInstance->SNO->WriteGlobalSno('a', line);
 670                 }
 671
 672                 if (!old)
 673                 {
 674                         // Starting up, so print it out so it's seen. XXX this is a bit of a hack.
 675                         printf("%s\n", line.c_str());
 676                 }
 677         }
 678
 679         errstr.clear();
 680         errstr.str(std::string());
 681
 682         /* No old configuration -> initial boot, nothing more to do here */
 683         if (!old)
 684         {
 685                 if (!valid)
 686                 {
 687                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 688                 }
 689
 690                 return;
 691         }
 692
 693         // If there were errors processing configuration, don't touch modules.
 694         if (!valid)
 695                 return;
 696
 697         ApplyModules(user);
 698
 699         if (user)
 700                 user->WriteServ("NOTICE %s :*** Successfully rehashed server.", user->nick.c_str());
 701         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 702 }
 703
 704 void ServerConfig::ApplyModules(User* user)
 705 {
 706         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
 707         if (whowas)
 708                 WhowasRequest(NULL, whowas, WhowasRequest::WHOWAS_PRUNE).Send();
 709
 710         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
 711         std::vector<std::string> added_modules;
 712         std::set<std::string> removed_modules(v.begin(), v.end());
 713
 714         ConfigTagList tags = ConfTags("module");
 715         for(ConfigIter i = tags.first; i != tags.second; ++i)
 716         {
 717                 ConfigTag* tag = i->second;
 718                 std::string name;
 719                 if (tag->readString("name", name))
 720                 {
 721                         // if this module is already loaded, the erase will succeed, so we need do nothing
 722                         // otherwise, we need to add the module (which will be done later)
 723                         if (removed_modules.erase(name) == 0)
 724                                 added_modules.push_back(name);
 725                 }
 726         }
 727
 728         if (ConfValue("options")->getBool("allowhalfop") && removed_modules.erase("m_halfop.so") == 0)
 729                 added_modules.push_back("m_halfop.so");
 730
 731         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 732         {
 733                 // Don't remove cmd_*.so, just remove m_*.so
 734                 if (removing->c_str()[0] == 'c')
 735                         continue;
 736                 Module* m = ServerInstance->Modules->Find(*removing);
 737                 if (m && ServerInstance->Modules->Unload(m))
 738                 {
 739                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
 740
 741                         if (user)
 742                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
 743                         else
 744                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
 745                 }
 746                 else
 747                 {
 748                         if (user)
 749                                 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());
 750                         else
 751                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
 752                 }
 753         }
 754
 755         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 756         {
 757                 if (ServerInstance->Modules->Load(adding->c_str()))
 758                 {
 759                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 760                         if (user)
 761                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
 762                         else
 763                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 764                 }
 765                 else
 766                 {
 767                         if (user)
 768                                 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());
 769                         else
 770                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 771                 }
 772         }
 773 }
 774
 775 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
 776 {
 777         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
 778 }
 779
 780 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 781 {
 782         ConfigDataHash::iterator iter = config_data.find(tag);
 783         if (iter == config_data.end())
 784                 return NULL;
 785         return iter->second;
 786 }
 787
 788 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 789 {
 790         return config_data.equal_range(tag);
 791 }
 792
 793 bool ServerConfig::FileExists(const char* file)
 794 {
 795         struct stat sb;
 796         if (stat(file, &sb) == -1)
 797                 return false;
 798
 799         if ((sb.st_mode & S_IFDIR) > 0)
 800                 return false;
 801
 802         FILE *input = fopen(file, "r");
 803         if (input == NULL)
 804                 return false;
 805         else
 806         {
 807                 fclose(input);
 808                 return true;
 809         }
 810 }
 811
 812 const char* ServerConfig::CleanFilename(const char* name)
 813 {
 814         const char* p = name + strlen(name);
 815         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
 816         return (p != name ? ++p : p);
 817 }
 818
 819 std::string ServerConfig::GetSID()
 820 {
 821         return sid;
 822 }
 823
 824 void ConfigReaderThread::Run()
 825 {
 826         Config->Read();
 827         done = true;
 828 }
 829
 830 void ConfigReaderThread::Finish()
 831 {
 832         ServerConfig* old = ServerInstance->Config;
 833         ServerInstance->Logs->Log("CONFIG",DEBUG,"Switching to new configuration...");
 834         ServerInstance->Logs->CloseLogs();
 835         ServerInstance->Config = this->Config;
 836         ServerInstance->Logs->OpenFileLogs();
 837         Config->Apply(old, TheUserUID);
 838
 839         if (Config->valid)
 840         {
 841                 /*
 842                  * Apply the changed configuration from the rehash.
 843                  *
 844                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 845                  * thoroughly!!!
 846                  */
 847                 ServerInstance->XLines->CheckELines();
 848                 ServerInstance->XLines->CheckELines();
 849                 ServerInstance->XLines->ApplyLines();
 850                 ServerInstance->Res->Rehash();
 851                 ServerInstance->ResetMaxBans();
 852                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 853                 User* user = ServerInstance->FindNick(TheUserUID);
 854                 FOREACH_MOD(I_OnRehash, OnRehash(user));
 855                 ServerInstance->BuildISupport();
 856
 857                 Config = old;
 858         }
 859         else
 860         {
 861                 // whoops, abort!
 862                 ServerInstance->Logs->CloseLogs();
 863                 ServerInstance->Config = old;
 864                 ServerInstance->Logs->OpenFileLogs();
 865         }
 866 }