src/configreader.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2007-2009 Robin Burchell <robin+git@viroteck.net>
   6  *   Copyright (C) 2006-2009 Dennis Friis <peavey@inspircd.org>
   7  *   Copyright (C) 2006-2008 Craig Edwards <craigedwards@brainbox.cc>
   8  *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
   9  *   Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
  10  *
  11  * This file is part of InspIRCd.  InspIRCd is free software: you can
  12  * redistribute it and/or modify it under the terms of the GNU General Public
  13  * License as published by the Free Software Foundation, version 2.
  14  *
  15  * This program is distributed in the hope that it will be useful, but WITHOUT
  16  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  17  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  18  * details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22  */
  23
  24
  25 #include "inspircd.h"
  26 #include "xline.h"
  27 #include "listmode.h"
  28 #include "exitcodes.h"
  29 #include "configparser.h"
  30 #include <iostream>
  31
  32 ServerConfig::ServerConfig()
  33 {
  34         RawLog = HideBans = HideSplits = UndernetMsgPrefix = false;
  35         WildcardIPv6 = CycleHosts = InvBypassModes = true;
  36         dns_timeout = 5;
  37         MaxTargets = 20;
  38         NetBufferSize = 10240;
  39         SoftLimit = ServerInstance->SE->GetMaxFds();
  40         MaxConn = SOMAXCONN;
  41         MaxChans = 20;
  42         OperMaxChans = 30;
  43         c_ipv4_range = 32;
  44         c_ipv6_range = 128;
  45 }
  46
  47 template<typename T, typename V>
  48 static void range(T& value, V min, V max, V def, const char* msg)
  49 {
  50         if (value >= (T)min && value <= (T)max)
  51                 return;
  52         ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "WARNING: %s value of %ld is not between %ld and %ld; set to %ld.",
  53                 msg, (long)value, (long)min, (long)max, (long)def);
  54         value = def;
  55 }
  56
  57 static void ValidHost(const std::string& p, const std::string& msg)
  58 {
  59         int num_dots = 0;
  60         if (p.empty() || p[0] == '.')
  61                 throw CoreException("The value of "+msg+" is not a valid hostname");
  62         for (unsigned int i=0;i < p.length();i++)
  63         {
  64                 switch (p[i])
  65                 {
  66                         case ' ':
  67                                 throw CoreException("The value of "+msg+" is not a valid hostname");
  68                         case '.':
  69                                 num_dots++;
  70                         break;
  71                 }
  72         }
  73         if (num_dots == 0)
  74                 throw CoreException("The value of "+msg+" is not a valid hostname");
  75 }
  76
  77 bool ServerConfig::ApplyDisabledCommands(const std::string& data)
  78 {
  79         std::stringstream dcmds(data);
  80         std::string thiscmd;
  81
  82         /* Enable everything first */
  83         for (Commandtable::iterator x = ServerInstance->Parser->cmdlist.begin(); x != ServerInstance->Parser->cmdlist.end(); x++)
  84                 x->second->Disable(false);
  85
  86         /* Now disable all the ones which the user wants disabled */
  87         while (dcmds >> thiscmd)
  88         {
  89                 Commandtable::iterator cm = ServerInstance->Parser->cmdlist.find(thiscmd);
  90                 if (cm != ServerInstance->Parser->cmdlist.end())
  91                 {
  92                         cm->second->Disable(true);
  93                 }
  94         }
  95         return true;
  96 }
  97
  98 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
  99 {
 100         ConfigTagList tags = conf->ConfTags(tag);
 101         for(ConfigIter i = tags.first; i != tags.second; ++i)
 102         {
 103                 ConfigTag* ctag = i->second;
 104                 std::string mask;
 105                 if (!ctag->readString(key, mask))
 106                         throw CoreException("<"+tag+":"+key+"> missing at " + ctag->getTagLocation());
 107                 std::string reason = ctag->getString("reason", "<Config>");
 108                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
 109                 if (!ServerInstance->XLines->AddLine(xl, NULL))
 110                         delete xl;
 111         }
 112 }
 113
 114 typedef std::map<std::string, ConfigTag*> LocalIndex;
 115 void ServerConfig::CrossCheckOperClassType()
 116 {
 117         LocalIndex operclass;
 118         ConfigTagList tags = ConfTags("class");
 119         for(ConfigIter i = tags.first; i != tags.second; ++i)
 120         {
 121                 ConfigTag* tag = i->second;
 122                 std::string name = tag->getString("name");
 123                 if (name.empty())
 124                         throw CoreException("<class:name> missing from tag at " + tag->getTagLocation());
 125                 if (operclass.find(name) != operclass.end())
 126                         throw CoreException("Duplicate class block with name " + name + " at " + tag->getTagLocation());
 127                 operclass[name] = tag;
 128         }
 129         tags = ConfTags("type");
 130         for(ConfigIter i = tags.first; i != tags.second; ++i)
 131         {
 132                 ConfigTag* tag = i->second;
 133                 std::string name = tag->getString("name");
 134                 if (name.empty())
 135                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
 136                 if (oper_blocks.find(" " + name) != oper_blocks.end())
 137                         throw CoreException("Duplicate type block with name " + name + " at " + tag->getTagLocation());
 138
 139                 OperInfo* ifo = new OperInfo;
 140                 oper_blocks[" " + name] = ifo;
 141                 ifo->name = name;
 142                 ifo->type_block = tag;
 143
 144                 std::string classname;
 145                 irc::spacesepstream str(tag->getString("classes"));
 146                 while (str.GetToken(classname))
 147                 {
 148                         LocalIndex::iterator cls = operclass.find(classname);
 149                         if (cls == operclass.end())
 150                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 151                         ifo->class_blocks.push_back(cls->second);
 152                 }
 153         }
 154
 155         tags = ConfTags("oper");
 156         for(ConfigIter i = tags.first; i != tags.second; ++i)
 157         {
 158                 ConfigTag* tag = i->second;
 159
 160                 std::string name = tag->getString("name");
 161                 if (name.empty())
 162                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 163
 164                 std::string type = tag->getString("type");
 165                 OperIndex::iterator tblk = oper_blocks.find(" " + type);
 166                 if (tblk == oper_blocks.end())
 167                         throw CoreException("Oper block " + name + " has missing type " + type);
 168                 if (oper_blocks.find(name) != oper_blocks.end())
 169                         throw CoreException("Duplicate oper block with name " + name + " at " + tag->getTagLocation());
 170
 171                 OperInfo* ifo = new OperInfo;
 172                 ifo->name = type;
 173                 ifo->oper_block = tag;
 174                 ifo->type_block = tblk->second->type_block;
 175                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 176                 oper_blocks[name] = ifo;
 177         }
 178 }
 179
 180 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 181 {
 182         typedef std::map<std::string, ConnectClass*> ClassMap;
 183         ClassMap oldBlocksByMask;
 184         if (current)
 185         {
 186                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 187                 {
 188                         ConnectClass* c = *i;
 189                         if (c->name.substr(0, 8) != "unnamed-")
 190                         {
 191                                 oldBlocksByMask["n" + c->name] = c;
 192                         }
 193                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 194                         {
 195                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 196                                 typeMask += c->host;
 197                                 oldBlocksByMask[typeMask] = c;
 198                         }
 199                 }
 200         }
 201
 202         int blk_count = config_data.count("connect");
 203         if (blk_count == 0)
 204         {
 205                 // No connect blocks found; make a trivial default block
 206                 std::vector<KeyVal>* items;
 207                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 208                 items->push_back(std::make_pair("allow", "*"));
 209                 config_data.insert(std::make_pair("connect", tag));
 210                 blk_count = 1;
 211         }
 212
 213         Classes.resize(blk_count);
 214         std::map<std::string, int> names;
 215
 216         bool try_again = true;
 217         for(int tries=0; try_again; tries++)
 218         {
 219                 try_again = false;
 220                 ConfigTagList tags = ConfTags("connect");
 221                 int i=0;
 222                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 223                 {
 224                         ConfigTag* tag = it->second;
 225                         if (Classes[i])
 226                                 continue;
 227
 228                         ConnectClass* parent = NULL;
 229                         std::string parentName = tag->getString("parent");
 230                         if (!parentName.empty())
 231                         {
 232                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 233                                 if (parentIter == names.end())
 234                                 {
 235                                         try_again = true;
 236                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 237                                         if (tries >= blk_count)
 238                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 239                                         continue;
 240                                 }
 241                                 parent = Classes[parentIter->second];
 242                         }
 243
 244                         std::string name = tag->getString("name");
 245                         std::string mask, typeMask;
 246                         char type;
 247
 248                         if (tag->readString("allow", mask, false))
 249                         {
 250                                 type = CC_ALLOW;
 251                                 typeMask = 'a' + mask;
 252                         }
 253                         else if (tag->readString("deny", mask, false))
 254                         {
 255                                 type = CC_DENY;
 256                                 typeMask = 'd' + mask;
 257                         }
 258                         else if (!name.empty())
 259                         {
 260                                 type = CC_NAMED;
 261                                 mask = name;
 262                                 typeMask = 'n' + mask;
 263                         }
 264                         else
 265                         {
 266                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 267                         }
 268
 269                         if (name.empty())
 270                         {
 271                                 name = "unnamed-" + ConvToStr(i);
 272                         }
 273                         else
 274                         {
 275                                 typeMask = 'n' + name;
 276                         }
 277
 278                         if (names.find(name) != names.end())
 279                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 280                         names[name] = i;
 281
 282                         ConnectClass* me = parent ?
 283                                 new ConnectClass(tag, type, mask, *parent) :
 284                                 new ConnectClass(tag, type, mask);
 285
 286                         me->name = name;
 287
 288                         me->registration_timeout = tag->getInt("timeout", me->registration_timeout);
 289                         me->pingtime = tag->getInt("pingfreq", me->pingtime);
 290                         std::string sendq;
 291                         if (tag->readString("sendq", sendq))
 292                         {
 293                                 // attempt to guess a good hard/soft sendq from a single value
 294                                 long value = atol(sendq.c_str());
 295                                 if (value > 16384)
 296                                         me->softsendqmax = value / 16;
 297                                 else
 298                                         me->softsendqmax = value;
 299                                 me->hardsendqmax = value * 8;
 300                         }
 301                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 302                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 303                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 304                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 305                         me->commandrate = tag->getInt("commandrate", me->commandrate);
 306                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 307                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 308                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 309                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 310                         me->maxconnwarn = tag->getBool("maxconnwarn", me->maxconnwarn);
 311                         me->limit = tag->getInt("limit", me->limit);
 312                         me->nouserdns = tag->getBool("nouserdns", me->nouserdns);
 313
 314                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 315                         if (oldMask != oldBlocksByMask.end())
 316                         {
 317                                 ConnectClass* old = oldMask->second;
 318                                 oldBlocksByMask.erase(oldMask);
 319                                 old->Update(me);
 320                                 delete me;
 321                                 me = old;
 322                         }
 323                         Classes[i] = me;
 324                 }
 325         }
 326 }
 327
 328 /** Represents a deprecated configuration tag.
 329  */
 330 struct DeprecatedConfig
 331 {
 332         /** Tag name. */
 333         std::string tag;
 334
 335         /** Attribute key. */
 336         std::string key;
 337
 338         /** Attribute value. */
 339         std::string value;
 340
 341         /** Reason for deprecation. */
 342         std::string reason;
 343 };
 344
 345 static const DeprecatedConfig ChangedConfig[] = {
 346         { "bind",        "transport",   "",                 "has been moved to <bind:ssl> as of 2.0" },
 347         { "die",         "value",       "",                 "you need to reread your config" },
 348         { "link",        "autoconnect", "",                 "2.0+ does not use this attribute - define <autoconnect> tags instead" },
 349         { "link",        "transport",   "",                 "has been moved to <link:ssl> as of 2.0" },
 350         { "module",      "name",        "m_chanprotect.so", "has been replaced with m_customprefix as of 2.2" },
 351         { "module",      "name",        "m_halfop.so",      "has been replaced with m_customprefix as of 2.2" },
 352         { "performance", "nouserdns",   "",                 "has been moved to <connect:nouserdns> as of 2.2" }
 353 };
 354
 355 void ServerConfig::Fill()
 356 {
 357         ConfigTag* options = ConfValue("options");
 358         ConfigTag* security = ConfValue("security");
 359         if (sid.empty())
 360         {
 361                 ServerName = ConfValue("server")->getString("name");
 362                 sid = ConfValue("server")->getString("id");
 363                 ValidHost(ServerName, "<server:name>");
 364                 if (!sid.empty() && !InspIRCd::IsSID(sid))
 365                         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.");
 366         }
 367         else
 368         {
 369                 if (ServerName != ConfValue("server")->getString("name"))
 370                         throw CoreException("You must restart to change the server name");
 371
 372                 std::string nsid = ConfValue("server")->getString("id");
 373                 if (!nsid.empty() && nsid != sid)
 374                         throw CoreException("You must restart to change the server id");
 375
 376                 if (Limits.MaxLine != static_cast<size_t>(ConfValue("limits")->getInt("maxline", 512)))
 377                         throw CoreException("You must restart to change the maximum line length");
 378
 379         }
 380         diepass = ConfValue("power")->getString("diepass");
 381         restartpass = ConfValue("power")->getString("restartpass");
 382         powerhash = ConfValue("power")->getString("hash");
 383         PrefixQuit = options->getString("prefixquit");
 384         SuffixQuit = options->getString("suffixquit");
 385         FixedQuit = options->getString("fixedquit");
 386         PrefixPart = options->getString("prefixpart");
 387         SuffixPart = options->getString("suffixpart");
 388         FixedPart = options->getString("fixedpart");
 389         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 390         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 391         MoronBanner = options->getString("moronbanner", "You're banned!");
 392         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 393         Network = ConfValue("server")->getString("network", "Network");
 394         AdminName = ConfValue("admin")->getString("name", "");
 395         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 396         AdminNick = ConfValue("admin")->getString("nick", "admin");
 397         ModPath = ConfValue("path")->getString("moduledir", MOD_PATH);
 398         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 399         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 400         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 401         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 402         UserStats = security->getString("userstats");
 403         CustomVersion = security->getString("customversion", Network + " IRCd");
 404         HideSplits = security->getBool("hidesplits");
 405         HideBans = security->getBool("hidebans");
 406         HideWhoisServer = security->getString("hidewhois");
 407         HideKillsServer = security->getString("hidekills");
 408         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 409         GenericOper = security->getBool("genericoper");
 410         SyntaxHints = options->getBool("syntaxhints");
 411         CycleHosts = options->getBool("cyclehosts");
 412         CycleHostsFromUser = options->getBool("cyclehostsfromuser");
 413         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 414         FullHostInTopic = options->getBool("hostintopic");
 415         MaxTargets = security->getInt("maxtargets", 20);
 416         DefaultModes = options->getString("defaultmodes", "nt");
 417         PID = ConfValue("pid")->getString("file");
 418         MaxChans = ConfValue("channels")->getInt("users", 20);
 419         OperMaxChans = ConfValue("channels")->getInt("opers", 60);
 420         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 421         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 422         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 423         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 424         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 425         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 426         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 427         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 428         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 429         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 430         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 431         Limits.MaxLine = ConfValue("limits")->getInt("maxline", 512);
 432         InvBypassModes = options->getBool("invitebypassmodes", true);
 433         NoSnoticeStack = options->getBool("nosnoticestack", false);
 434
 435         range(SoftLimit, 10, ServerInstance->SE->GetMaxFds(), ServerInstance->SE->GetMaxFds(), "<performance:softlimit>");
 436         if (ConfValue("performance")->getBool("limitsomaxconn", true))
 437                 range(MaxConn, 0, SOMAXCONN, SOMAXCONN, "<performance:somaxconn>");
 438         range(MaxTargets, 1, 31, 20, "<security:maxtargets>");
 439         range(NetBufferSize, 1024, 65534, 10240, "<performance:netbuffersize>");
 440
 441         std::string defbind = options->getString("defaultbind");
 442         if (assign(defbind) == "ipv4")
 443         {
 444                 WildcardIPv6 = false;
 445         }
 446         else if (assign(defbind) == "ipv6")
 447         {
 448                 WildcardIPv6 = true;
 449         }
 450         else
 451         {
 452                 WildcardIPv6 = true;
 453                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 454                 if (socktest < 0)
 455                         WildcardIPv6 = false;
 456                 else
 457                         ServerInstance->SE->Close(socktest);
 458         }
 459         ConfigTagList tags = ConfTags("uline");
 460         for(ConfigIter i = tags.first; i != tags.second; ++i)
 461         {
 462                 ConfigTag* tag = i->second;
 463                 std::string server;
 464                 if (!tag->readString("server", server))
 465                         throw CoreException("<uline> tag missing server at " + tag->getTagLocation());
 466                 ulines[assign(server)] = tag->getBool("silent");
 467         }
 468
 469         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 470         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 471         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 472         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 473
 474         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 475         std::string modes = ConfValue("disabled")->getString("usermodes");
 476         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 477         {
 478                 // Complain when the character is not a-z or A-Z
 479                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 480                         throw CoreException("Invalid usermode " + std::string(1, *p) + " was found.");
 481                 DisabledUModes[*p - 'A'] = 1;
 482         }
 483
 484         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 485         modes = ConfValue("disabled")->getString("chanmodes");
 486         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 487         {
 488                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 489                         throw CoreException("Invalid chanmode " + std::string(1, *p) + " was found.");
 490                 DisabledCModes[*p - 'A'] = 1;
 491         }
 492
 493         memset(HideModeLists, 0, sizeof(HideModeLists));
 494         modes = ConfValue("security")->getString("hidemodes");
 495         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 496                 HideModeLists[(unsigned char) *p] = true;
 497
 498         std::string v = security->getString("announceinvites");
 499
 500         if (v == "ops")
 501                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 502         else if (v == "all")
 503                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 504         else if (v == "dynamic")
 505                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 506         else
 507                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 508
 509         v = security->getString("operspywhois");
 510         if (v == "splitmsg")
 511                 OperSpyWhois = SPYWHOIS_SPLITMSG;
 512         else if (v == "on" || v == "yes")
 513                 OperSpyWhois = SPYWHOIS_SINGLEMSG;
 514         else
 515                 OperSpyWhois = SPYWHOIS_NONE;
 516 }
 517
 518 // WARNING: it is not safe to use most of the codebase in this function, as it
 519 // will run in the config reader thread
 520 void ServerConfig::Read()
 521 {
 522         /* Load and parse the config file, if there are any errors then explode */
 523
 524         ParseStack stack(this);
 525         try
 526         {
 527                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 528         }
 529         catch (CoreException& err)
 530         {
 531                 valid = false;
 532                 errstr << err.GetReason();
 533         }
 534 }
 535
 536 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 537 {
 538         valid = true;
 539         if (old)
 540         {
 541                 /*
 542                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 543                  */
 544                 this->ServerName = old->ServerName;
 545                 this->sid = old->sid;
 546                 this->cmdline = old->cmdline;
 547         }
 548
 549         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 550         try
 551         {
 552                 for (int index = 0; index * sizeof(DeprecatedConfig) < sizeof(ChangedConfig); index++)
 553                 {
 554                         std::string value;
 555                         ConfigTagList tags = ConfTags(ChangedConfig[index].tag);
 556                         for(ConfigIter i = tags.first; i != tags.second; ++i)
 557                         {
 558                                 if (i->second->readString(ChangedConfig[index].key, value, true)
 559                                         && (ChangedConfig[index].value.empty() || value == ChangedConfig[index].value))
 560                                 {
 561                                         errstr << "Your configuration contains a deprecated value: <"  << ChangedConfig[index].tag;
 562                                         if (ChangedConfig[index].value.empty())
 563                                         {
 564                                                 errstr << ':' << ChangedConfig[index].key;
 565                                         }
 566                                         else
 567                                         {
 568                                                 errstr << ' ' << ChangedConfig[index].key << "=\"" << ChangedConfig[index].value << "\"";
 569                                         }
 570                                         errstr << "> - " << ChangedConfig[index].reason << " (at " << i->second->getTagLocation() << ")\n";
 571                                 }
 572                         }
 573                 }
 574
 575                 Fill();
 576
 577                 // Handle special items
 578                 CrossCheckOperClassType();
 579                 CrossCheckConnectBlocks(old);
 580         }
 581         catch (CoreException &ce)
 582         {
 583                 errstr << ce.GetReason();
 584         }
 585
 586         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 587         valid = errstr.str().empty();
 588
 589         // write once here, to try it out and make sure its ok
 590         if (valid)
 591                 ServerInstance->WritePID(this->PID);
 592
 593         if (old)
 594         {
 595                 // On first run, ports are bound later on
 596                 FailedPortList pl;
 597                 ServerInstance->BindPorts(pl);
 598                 if (pl.size())
 599                 {
 600                         errstr << "Not all your client ports could be bound." << std::endl
 601                                 << "The following port(s) failed to bind:" << std::endl;
 602
 603                         int j = 1;
 604                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 605                         {
 606                                 errstr << j << ".\tAddress: " << (i->first.empty() ? "<all>" : i->first.c_str()) << "\tReason: "
 607                                         << i->second << std::endl;
 608                         }
 609                 }
 610         }
 611
 612         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 613
 614         if (!valid)
 615                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "There were errors in your configuration file:");
 616
 617         while (errstr.good())
 618         {
 619                 std::string line;
 620                 getline(errstr, line, '\n');
 621                 if (line.empty())
 622                         continue;
 623                 // On startup, print out to console (still attached at this point)
 624                 if (!old)
 625                         std::cout << line << std::endl;
 626                 // If a user is rehashing, tell them directly
 627                 if (user)
 628                         user->SendText(":%s NOTICE %s :*** %s", ServerInstance->Config->ServerName.c_str(), user->nick.c_str(), line.c_str());
 629                 // Also tell opers
 630                 ServerInstance->SNO->WriteGlobalSno('a', line);
 631         }
 632
 633         errstr.clear();
 634         errstr.str(std::string());
 635
 636         // Re-parse our MOTD and RULES files for colors -- Justasic
 637         for (ClassVector::const_iterator it = this->Classes.begin(), it_end = this->Classes.end(); it != it_end; ++it)
 638         {
 639                 ConfigTag *tag = (*it)->config;
 640                 // Make sure our connection class allows motd colors
 641                 if(!tag->getBool("allowmotdcolors"))
 642                       continue;
 643
 644                 ConfigFileCache::iterator file = this->Files.find(tag->getString("motd", "motd"));
 645                 if (file != this->Files.end())
 646                       InspIRCd::ProcessColors(file->second);
 647
 648                 file = this->Files.find(tag->getString("rules", "rules"));
 649                 if (file != this->Files.end())
 650                       InspIRCd::ProcessColors(file->second);
 651         }
 652
 653         /* No old configuration -> initial boot, nothing more to do here */
 654         if (!old)
 655         {
 656                 if (!valid)
 657                 {
 658                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 659                 }
 660
 661                 return;
 662         }
 663
 664
 665         // If there were errors processing configuration, don't touch modules.
 666         if (!valid)
 667                 return;
 668
 669         ApplyModules(user);
 670
 671         if (user)
 672                 user->SendText(":%s NOTICE %s :*** Successfully rehashed server.",
 673                         ServerInstance->Config->ServerName.c_str(), user->nick.c_str());
 674         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 675 }
 676
 677 void ServerConfig::ApplyModules(User* user)
 678 {
 679         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
 680         std::vector<std::string> added_modules;
 681         std::set<std::string> removed_modules(v.begin(), v.end());
 682
 683         ConfigTagList tags = ConfTags("module");
 684         for(ConfigIter i = tags.first; i != tags.second; ++i)
 685         {
 686                 ConfigTag* tag = i->second;
 687                 std::string name;
 688                 if (tag->readString("name", name))
 689                 {
 690                         // if this module is already loaded, the erase will succeed, so we need do nothing
 691                         // otherwise, we need to add the module (which will be done later)
 692                         if (removed_modules.erase(name) == 0)
 693                                 added_modules.push_back(name);
 694                 }
 695         }
 696
 697         if (ConfValue("options")->getBool("allowhalfop") && removed_modules.erase("m_halfop.so") == 0)
 698                 added_modules.push_back("m_halfop.so");
 699
 700         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 701         {
 702                 // Don't remove cmd_*.so, just remove m_*.so
 703                 if (removing->c_str()[0] == 'c')
 704                         continue;
 705                 Module* m = ServerInstance->Modules->Find(*removing);
 706                 if (m && ServerInstance->Modules->Unload(m))
 707                 {
 708                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
 709
 710                         if (user)
 711                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
 712                         else
 713                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
 714                 }
 715                 else
 716                 {
 717                         if (user)
 718                                 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());
 719                         else
 720                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
 721                 }
 722         }
 723
 724         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 725         {
 726                 if (ServerInstance->Modules->Load(adding->c_str()))
 727                 {
 728                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 729                         if (user)
 730                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
 731                         else
 732                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 733                 }
 734                 else
 735                 {
 736                         if (user)
 737                                 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());
 738                         else
 739                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 740                 }
 741         }
 742 }
 743
 744 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
 745 {
 746         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
 747 }
 748
 749 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 750 {
 751         ConfigTagList found = config_data.equal_range(tag);
 752         if (found.first == found.second)
 753                 return NULL;
 754         ConfigTag* rv = found.first->second;
 755         found.first++;
 756         if (found.first != found.second)
 757                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 758                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 759         return rv;
 760 }
 761
 762 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 763 {
 764         return config_data.equal_range(tag);
 765 }
 766
 767 bool ServerConfig::FileExists(const char* file)
 768 {
 769         struct stat sb;
 770         if (stat(file, &sb) == -1)
 771                 return false;
 772
 773         if ((sb.st_mode & S_IFDIR) > 0)
 774                 return false;
 775
 776         return !access(file, F_OK);
 777 }
 778
 779 std::string ServerConfig::Escape(const std::string& str, bool xml)
 780 {
 781         std::string escaped;
 782         for (std::string::const_iterator it = str.begin(); it != str.end(); ++it)
 783         {
 784                 switch (*it)
 785                 {
 786                         case '"':
 787                                 escaped += xml ? "&quot;" : "\"";
 788                                 break;
 789                         case '&':
 790                                 escaped += xml ? "&amp;" : "&";
 791                                 break;
 792                         case '\\':
 793                                 escaped += xml ? "\\" : "\\\\";
 794                                 break;
 795                         default:
 796                                 escaped += *it;
 797                                 break;
 798                 }
 799         }
 800         return escaped;
 801 }
 802
 803 const char* ServerConfig::CleanFilename(const char* name)
 804 {
 805         const char* p = name + strlen(name);
 806         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
 807         return (p != name ? ++p : p);
 808 }
 809
 810 void ConfigReaderThread::Run()
 811 {
 812         Config->Read();
 813         done = true;
 814 }
 815
 816 void ConfigReaderThread::Finish()
 817 {
 818         ServerConfig* old = ServerInstance->Config;
 819         ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "Switching to new configuration...");
 820         ServerInstance->Config = this->Config;
 821         Config->Apply(old, TheUserUID);
 822
 823         if (Config->valid)
 824         {
 825                 /*
 826                  * Apply the changed configuration from the rehash.
 827                  *
 828                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 829                  * thoroughly!!!
 830                  */
 831                 ServerInstance->XLines->CheckELines();
 832                 ServerInstance->XLines->ApplyLines();
 833                 ModeReference ban(NULL, "ban");
 834                 static_cast<ListModeBase*>(*ban)->DoRehash();
 835                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 836                 User* user = ServerInstance->FindNick(TheUserUID);
 837                 FOREACH_MOD(I_OnRehash, OnRehash(user));
 838                 ServerInstance->ISupport.Build();
 839
 840                 ServerInstance->Logs->CloseLogs();
 841                 ServerInstance->Logs->OpenFileLogs();
 842
 843                 if (Config->RawLog && !old->RawLog)
 844                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 845
 846                 Config = old;
 847         }
 848         else
 849         {
 850                 // whoops, abort!
 851                 ServerInstance->Config = old;
 852         }
 853 }