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