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 = 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->resolvehostnames = tag->getBool("resolvehostnames", me->resolvehostnames);
 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         { "options",     "cyclehosts",  "",                 "has been replaced with m_hostcycle as of 2.2" },
 353         { "performance", "nouserdns",   "",                 "has been moved to <connect:resolvehostnames> as of 2.2" }
 354 };
 355
 356 void ServerConfig::Fill()
 357 {
 358         ConfigTag* options = ConfValue("options");
 359         ConfigTag* security = ConfValue("security");
 360         if (sid.empty())
 361         {
 362                 ServerName = ConfValue("server")->getString("name", "irc.example.com");
 363                 ValidHost(ServerName, "<server:name>");
 364
 365                 sid = ConfValue("server")->getString("id");
 366                 if (!sid.empty() && !InspIRCd::IsSID(sid))
 367                         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.");
 368         }
 369         else
 370         {
 371                 if (ServerName != ConfValue("server")->getString("name"))
 372                         throw CoreException("You must restart to change the server name");
 373
 374                 std::string nsid = ConfValue("server")->getString("id");
 375                 if (!nsid.empty() && nsid != sid)
 376                         throw CoreException("You must restart to change the server id");
 377         }
 378         diepass = ConfValue("power")->getString("diepass");
 379         restartpass = ConfValue("power")->getString("restartpass");
 380         powerhash = ConfValue("power")->getString("hash");
 381         PrefixQuit = options->getString("prefixquit");
 382         SuffixQuit = options->getString("suffixquit");
 383         FixedQuit = options->getString("fixedquit");
 384         PrefixPart = options->getString("prefixpart");
 385         SuffixPart = options->getString("suffixpart");
 386         FixedPart = options->getString("fixedpart");
 387         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 388         CCOnConnect = ConfValue("performance")->getBool("clonesonconnect", true);
 389         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 390         MoronBanner = options->getString("moronbanner", "You're banned!");
 391         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 392         Network = ConfValue("server")->getString("network", "Network");
 393         AdminName = ConfValue("admin")->getString("name", "");
 394         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 395         AdminNick = ConfValue("admin")->getString("nick", "admin");
 396         ModPath = ConfValue("path")->getString("moduledir", MOD_PATH);
 397         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 398         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 399         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 400         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 401         UserStats = security->getString("userstats");
 402         CustomVersion = security->getString("customversion");
 403         HideSplits = security->getBool("hidesplits");
 404         HideBans = security->getBool("hidebans");
 405         HideWhoisServer = security->getString("hidewhois");
 406         HideKillsServer = security->getString("hidekills");
 407         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 408         GenericOper = security->getBool("genericoper");
 409         SyntaxHints = options->getBool("syntaxhints");
 410         CycleHostsFromUser = options->getBool("cyclehostsfromuser");
 411         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 412         FullHostInTopic = options->getBool("hostintopic");
 413         MaxTargets = security->getInt("maxtargets", 20);
 414         DefaultModes = options->getString("defaultmodes", "nt");
 415         PID = ConfValue("pid")->getString("file");
 416         MaxChans = ConfValue("channels")->getInt("users", 20);
 417         OperMaxChans = ConfValue("channels")->getInt("opers", 60);
 418         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 419         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 420         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 421         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 422         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 423         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 424         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 425         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 426         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 427         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 428         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 429         Limits.MaxLine = ConfValue("limits")->getInt("maxline", 512);
 430         InvBypassModes = options->getBool("invitebypassmodes", true);
 431         NoSnoticeStack = options->getBool("nosnoticestack", false);
 432
 433         if (Network.find(' ') != std::string::npos)
 434                 throw CoreException(Network + " is not a valid network name. A network name must not contain spaces.");
 435
 436         range(SoftLimit, 10, ServerInstance->SE->GetMaxFds(), ServerInstance->SE->GetMaxFds(), "<performance:softlimit>");
 437         range(MaxTargets, 1, 31, 20, "<security:maxtargets>");
 438         range(NetBufferSize, 1024, 65534, 10240, "<performance:netbuffersize>");
 439
 440         std::string defbind = options->getString("defaultbind");
 441         if (assign(defbind) == "ipv4")
 442         {
 443                 WildcardIPv6 = false;
 444         }
 445         else if (assign(defbind) == "ipv6")
 446         {
 447                 WildcardIPv6 = true;
 448         }
 449         else
 450         {
 451                 WildcardIPv6 = true;
 452                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 453                 if (socktest < 0)
 454                         WildcardIPv6 = false;
 455                 else
 456                         ServerInstance->SE->Close(socktest);
 457         }
 458         ConfigTagList tags = ConfTags("uline");
 459         for(ConfigIter i = tags.first; i != tags.second; ++i)
 460         {
 461                 ConfigTag* tag = i->second;
 462                 std::string server;
 463                 if (!tag->readString("server", server))
 464                         throw CoreException("<uline> tag missing server at " + tag->getTagLocation());
 465
 466                 if (ServerName == server)
 467                         throw CoreException("Servers should not uline themselves (at " + tag->getTagLocation() + ")");
 468
 469                 ulines[assign(server)] = tag->getBool("silent");
 470         }
 471
 472         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 473         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 474         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 475         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 476
 477         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 478         std::string modes = ConfValue("disabled")->getString("usermodes");
 479         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 480         {
 481                 // Complain when the character is not a-z or A-Z
 482                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 483                         throw CoreException("Invalid usermode " + std::string(1, *p) + " was found.");
 484                 DisabledUModes[*p - 'A'] = 1;
 485         }
 486
 487         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 488         modes = ConfValue("disabled")->getString("chanmodes");
 489         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 490         {
 491                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 492                         throw CoreException("Invalid chanmode " + std::string(1, *p) + " was found.");
 493                 DisabledCModes[*p - 'A'] = 1;
 494         }
 495
 496         memset(HideModeLists, 0, sizeof(HideModeLists));
 497         modes = ConfValue("security")->getString("hidemodes");
 498         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 499                 HideModeLists[(unsigned char) *p] = true;
 500
 501         std::string v = security->getString("announceinvites");
 502
 503         if (v == "ops")
 504                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 505         else if (v == "all")
 506                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 507         else if (v == "dynamic")
 508                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 509         else
 510                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 511
 512         v = security->getString("operspywhois");
 513         if (v == "splitmsg")
 514                 OperSpyWhois = SPYWHOIS_SPLITMSG;
 515         else if (v == "on" || v == "yes")
 516                 OperSpyWhois = SPYWHOIS_SINGLEMSG;
 517         else
 518                 OperSpyWhois = SPYWHOIS_NONE;
 519 }
 520
 521 // WARNING: it is not safe to use most of the codebase in this function, as it
 522 // will run in the config reader thread
 523 void ServerConfig::Read()
 524 {
 525         /* Load and parse the config file, if there are any errors then explode */
 526
 527         ParseStack stack(this);
 528         try
 529         {
 530                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 531         }
 532         catch (CoreException& err)
 533         {
 534                 valid = false;
 535                 errstr << err.GetReason();
 536         }
 537 }
 538
 539 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 540 {
 541         valid = true;
 542         if (old)
 543         {
 544                 /*
 545                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 546                  */
 547                 this->ServerName = old->ServerName;
 548                 this->sid = old->sid;
 549                 this->cmdline = old->cmdline;
 550         }
 551
 552         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 553         try
 554         {
 555                 for (int index = 0; index * sizeof(DeprecatedConfig) < sizeof(ChangedConfig); index++)
 556                 {
 557                         std::string value;
 558                         ConfigTagList tags = ConfTags(ChangedConfig[index].tag);
 559                         for(ConfigIter i = tags.first; i != tags.second; ++i)
 560                         {
 561                                 if (i->second->readString(ChangedConfig[index].key, value, true)
 562                                         && (ChangedConfig[index].value.empty() || value == ChangedConfig[index].value))
 563                                 {
 564                                         errstr << "Your configuration contains a deprecated value: <"  << ChangedConfig[index].tag;
 565                                         if (ChangedConfig[index].value.empty())
 566                                         {
 567                                                 errstr << ':' << ChangedConfig[index].key;
 568                                         }
 569                                         else
 570                                         {
 571                                                 errstr << ' ' << ChangedConfig[index].key << "=\"" << ChangedConfig[index].value << "\"";
 572                                         }
 573                                         errstr << "> - " << ChangedConfig[index].reason << " (at " << i->second->getTagLocation() << ")" << std::endl;
 574                                 }
 575                         }
 576                 }
 577
 578                 Fill();
 579
 580                 // Handle special items
 581                 CrossCheckOperClassType();
 582                 CrossCheckConnectBlocks(old);
 583         }
 584         catch (CoreException &ce)
 585         {
 586                 errstr << ce.GetReason();
 587         }
 588
 589         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 590         valid = errstr.str().empty();
 591
 592         // write once here, to try it out and make sure its ok
 593         if (valid)
 594                 ServerInstance->WritePID(this->PID);
 595
 596         ConfigTagList binds = ConfTags("bind");
 597         if (binds.first == binds.second)
 598                  errstr << "Possible configuration error: you have not defined any <bind> blocks." << std::endl
 599                          << "You will need to do this if you want clients to be able to connect!" << std::endl;
 600
 601         if (old)
 602         {
 603                 // On first run, ports are bound later on
 604                 FailedPortList pl;
 605                 ServerInstance->BindPorts(pl);
 606                 if (pl.size())
 607                 {
 608                         errstr << "Not all your client ports could be bound." << std::endl
 609                                 << "The following port(s) failed to bind:" << std::endl;
 610
 611                         int j = 1;
 612                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 613                         {
 614                                 errstr << j << ".\tAddress: " << (i->first.empty() ? "<all>" : i->first.c_str()) << "\tReason: "
 615                                         << i->second << std::endl;
 616                         }
 617                 }
 618         }
 619
 620         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 621
 622         if (!valid)
 623                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "There were errors in your configuration file:");
 624
 625         while (errstr.good())
 626         {
 627                 std::string line;
 628                 getline(errstr, line, '\n');
 629                 if (line.empty())
 630                         continue;
 631                 // On startup, print out to console (still attached at this point)
 632                 if (!old)
 633                         std::cout << line << std::endl;
 634                 // If a user is rehashing, tell them directly
 635                 if (user)
 636                         user->SendText(":%s NOTICE %s :*** %s", ServerInstance->Config->ServerName.c_str(), user->nick.c_str(), line.c_str());
 637                 // Also tell opers
 638                 ServerInstance->SNO->WriteGlobalSno('a', line);
 639         }
 640
 641         errstr.clear();
 642         errstr.str(std::string());
 643
 644         // Re-parse our MOTD and RULES files for colors -- Justasic
 645         for (ClassVector::const_iterator it = this->Classes.begin(), it_end = this->Classes.end(); it != it_end; ++it)
 646         {
 647                 ConfigTag *tag = (*it)->config;
 648                 // Make sure our connection class allows motd colors
 649                 if(!tag->getBool("allowmotdcolors"))
 650                       continue;
 651
 652                 ConfigFileCache::iterator file = this->Files.find(tag->getString("motd", "motd"));
 653                 if (file != this->Files.end())
 654                       InspIRCd::ProcessColors(file->second);
 655
 656                 file = this->Files.find(tag->getString("rules", "rules"));
 657                 if (file != this->Files.end())
 658                       InspIRCd::ProcessColors(file->second);
 659         }
 660
 661         /* No old configuration -> initial boot, nothing more to do here */
 662         if (!old)
 663         {
 664                 if (!valid)
 665                 {
 666                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 667                 }
 668
 669                 return;
 670         }
 671
 672
 673         // If there were errors processing configuration, don't touch modules.
 674         if (!valid)
 675                 return;
 676
 677         ApplyModules(user);
 678
 679         if (user)
 680                 user->SendText(":%s NOTICE %s :*** Successfully rehashed server.",
 681                         ServerInstance->Config->ServerName.c_str(), user->nick.c_str());
 682         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 683 }
 684
 685 void ServerConfig::ApplyModules(User* user)
 686 {
 687         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
 688         std::vector<std::string> added_modules;
 689         std::set<std::string> removed_modules(v.begin(), v.end());
 690
 691         ConfigTagList tags = ConfTags("module");
 692         for(ConfigIter i = tags.first; i != tags.second; ++i)
 693         {
 694                 ConfigTag* tag = i->second;
 695                 std::string name;
 696                 if (tag->readString("name", name))
 697                 {
 698                         // if this module is already loaded, the erase will succeed, so we need do nothing
 699                         // otherwise, we need to add the module (which will be done later)
 700                         if (removed_modules.erase(name) == 0)
 701                                 added_modules.push_back(name);
 702                 }
 703         }
 704
 705         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 706         {
 707                 // Don't remove cmd_*.so, just remove m_*.so
 708                 if (removing->c_str()[0] == 'c')
 709                         continue;
 710                 Module* m = ServerInstance->Modules->Find(*removing);
 711                 if (m && ServerInstance->Modules->Unload(m))
 712                 {
 713                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
 714
 715                         if (user)
 716                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
 717                         else
 718                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
 719                 }
 720                 else
 721                 {
 722                         if (user)
 723                                 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());
 724                         else
 725                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
 726                 }
 727         }
 728
 729         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 730         {
 731                 if (ServerInstance->Modules->Load(adding->c_str()))
 732                 {
 733                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 734                         if (user)
 735                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
 736                         else
 737                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 738                 }
 739                 else
 740                 {
 741                         if (user)
 742                                 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());
 743                         else
 744                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 745                 }
 746         }
 747 }
 748
 749 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
 750 {
 751         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
 752 }
 753
 754 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 755 {
 756         ConfigTagList found = config_data.equal_range(tag);
 757         if (found.first == found.second)
 758                 return NULL;
 759         ConfigTag* rv = found.first->second;
 760         found.first++;
 761         if (found.first != found.second)
 762                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 763                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 764         return rv;
 765 }
 766
 767 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 768 {
 769         return config_data.equal_range(tag);
 770 }
 771
 772 bool ServerConfig::FileExists(const char* file)
 773 {
 774         struct stat sb;
 775         if (stat(file, &sb) == -1)
 776                 return false;
 777
 778         if ((sb.st_mode & S_IFDIR) > 0)
 779                 return false;
 780
 781         return !access(file, F_OK);
 782 }
 783
 784 std::string ServerConfig::Escape(const std::string& str, bool xml)
 785 {
 786         std::string escaped;
 787         for (std::string::const_iterator it = str.begin(); it != str.end(); ++it)
 788         {
 789                 switch (*it)
 790                 {
 791                         case '"':
 792                                 escaped += xml ? "&quot;" : "\"";
 793                                 break;
 794                         case '&':
 795                                 escaped += xml ? "&amp;" : "&";
 796                                 break;
 797                         case '\\':
 798                                 escaped += xml ? "\\" : "\\\\";
 799                                 break;
 800                         default:
 801                                 escaped += *it;
 802                                 break;
 803                 }
 804         }
 805         return escaped;
 806 }
 807
 808 const char* ServerConfig::CleanFilename(const char* name)
 809 {
 810         const char* p = name + strlen(name);
 811         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
 812         return (p != name ? ++p : p);
 813 }
 814
 815 void ConfigReaderThread::Run()
 816 {
 817         Config->Read();
 818         done = true;
 819 }
 820
 821 void ConfigReaderThread::Finish()
 822 {
 823         ServerConfig* old = ServerInstance->Config;
 824         ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "Switching to new configuration...");
 825         ServerInstance->Config = this->Config;
 826         Config->Apply(old, TheUserUID);
 827
 828         if (Config->valid)
 829         {
 830                 /*
 831                  * Apply the changed configuration from the rehash.
 832                  *
 833                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 834                  * thoroughly!!!
 835                  */
 836                 ServerInstance->XLines->CheckELines();
 837                 ServerInstance->XLines->ApplyLines();
 838                 ChanModeReference ban(NULL, "ban");
 839                 static_cast<ListModeBase*>(*ban)->DoRehash();
 840                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 841                 User* user = ServerInstance->FindNick(TheUserUID);
 842                 FOREACH_MOD(OnRehash, (user));
 843                 ServerInstance->ISupport.Build();
 844
 845                 ServerInstance->Logs->CloseLogs();
 846                 ServerInstance->Logs->OpenFileLogs();
 847
 848                 if (Config->RawLog && !old->RawLog)
 849                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 850
 851                 Config = old;
 852         }
 853         else
 854         {
 855                 // whoops, abort!
 856                 ServerInstance->Config = old;
 857         }
 858 }