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 ServerLimits::ServerLimits(ConfigTag* tag)
  33         : NickMax(tag->getUInt("maxnick", 30))
  34         , ChanMax(tag->getUInt("maxchan", 64))
  35         , MaxModes(tag->getUInt("maxmodes", 20))
  36         , IdentMax(tag->getUInt("maxident", 10))
  37         , MaxQuit(tag->getUInt("maxquit", 255))
  38         , MaxTopic(tag->getUInt("maxtopic", 307))
  39         , MaxKick(tag->getUInt("maxkick", 255))
  40         , MaxGecos(tag->getUInt("maxgecos", 128))
  41         , MaxAway(tag->getUInt("maxaway", 200))
  42         , MaxLine(tag->getUInt("maxline", 512))
  43         , MaxHost(tag->getUInt("maxhost", 64))
  44 {
  45 }
  46
  47 ServerConfig::ServerPaths::ServerPaths(ConfigTag* tag)
  48         : Config(tag->getString("configdir", INSPIRCD_CONFIG_PATH))
  49         , Data(tag->getString("datadir", INSPIRCD_DATA_PATH))
  50         , Log(tag->getString("logdir", INSPIRCD_LOG_PATH))
  51         , Module(tag->getString("moduledir", INSPIRCD_MODULE_PATH))
  52 {
  53 }
  54
  55 static ConfigTag* CreateEmptyTag()
  56 {
  57         ConfigItems* items;
  58         return ConfigTag::create("empty", "<auto>", 0, items);
  59 }
  60
  61 ServerConfig::ServerConfig()
  62         : EmptyTag(CreateEmptyTag())
  63         , Limits(EmptyTag)
  64         , Paths(EmptyTag)
  65         , RawLog(false)
  66         , NoSnoticeStack(false)
  67 {
  68 }
  69
  70 ServerConfig::~ServerConfig()
  71 {
  72         delete EmptyTag;
  73 }
  74
  75 static void ValidHost(const std::string& p, const std::string& msg)
  76 {
  77         int num_dots = 0;
  78         if (p.empty() || p[0] == '.')
  79                 throw CoreException("The value of "+msg+" is not a valid hostname");
  80         for (unsigned int i=0;i < p.length();i++)
  81         {
  82                 switch (p[i])
  83                 {
  84                         case ' ':
  85                                 throw CoreException("The value of "+msg+" is not a valid hostname");
  86                         case '.':
  87                                 num_dots++;
  88                         break;
  89                 }
  90         }
  91         if (num_dots == 0)
  92                 throw CoreException("The value of "+msg+" is not a valid hostname");
  93 }
  94
  95 bool ServerConfig::ApplyDisabledCommands()
  96 {
  97         // Enable everything first.
  98         const CommandParser::CommandMap& commands = ServerInstance->Parser.GetCommands();
  99         for (CommandParser::CommandMap::const_iterator x = commands.begin(); x != commands.end(); ++x)
 100                 x->second->Disable(false);
 101
 102         // Now disable the commands specified in the config.
 103         std::string command;
 104         irc::spacesepstream commandlist(ConfValue("disabled")->getString("commands"));
 105         while (commandlist.GetToken(command))
 106         {
 107                 Command* handler = ServerInstance->Parser.GetHandler(command);
 108                 if (!handler)
 109                 {
 110                         ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "Unable to disable the %s command as it does not exist!", command.c_str());
 111                         continue;
 112                 }
 113
 114                 ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "The %s command has been disabled", command.c_str());
 115                 handler->Disable(true);
 116         }
 117         return true;
 118 }
 119
 120 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
 121 {
 122         ConfigTagList tags = conf->ConfTags(tag);
 123         for(ConfigIter i = tags.first; i != tags.second; ++i)
 124         {
 125                 ConfigTag* ctag = i->second;
 126                 std::string mask;
 127                 if (!ctag->readString(key, mask))
 128                         throw CoreException("<"+tag+":"+key+"> missing at " + ctag->getTagLocation());
 129                 std::string reason = ctag->getString("reason", "<Config>");
 130                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
 131                 if (!ServerInstance->XLines->AddLine(xl, NULL))
 132                         delete xl;
 133         }
 134 }
 135
 136 typedef std::map<std::string, ConfigTag*> LocalIndex;
 137 void ServerConfig::CrossCheckOperClassType()
 138 {
 139         LocalIndex operclass;
 140         ConfigTagList tags = ConfTags("class");
 141         for(ConfigIter i = tags.first; i != tags.second; ++i)
 142         {
 143                 ConfigTag* tag = i->second;
 144                 std::string name = tag->getString("name");
 145                 if (name.empty())
 146                         throw CoreException("<class:name> missing from tag at " + tag->getTagLocation());
 147                 if (operclass.find(name) != operclass.end())
 148                         throw CoreException("Duplicate class block with name " + name + " at " + tag->getTagLocation());
 149                 operclass[name] = tag;
 150         }
 151         tags = ConfTags("type");
 152         for(ConfigIter i = tags.first; i != tags.second; ++i)
 153         {
 154                 ConfigTag* tag = i->second;
 155                 std::string name = tag->getString("name");
 156                 if (name.empty())
 157                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
 158                 if (OperTypes.find(name) != OperTypes.end())
 159                         throw CoreException("Duplicate type block with name " + name + " at " + tag->getTagLocation());
 160
 161                 OperInfo* ifo = new OperInfo(name);
 162                 OperTypes[name] = ifo;
 163                 ifo->type_block = tag;
 164
 165                 std::string classname;
 166                 irc::spacesepstream str(tag->getString("classes"));
 167                 while (str.GetToken(classname))
 168                 {
 169                         LocalIndex::iterator cls = operclass.find(classname);
 170                         if (cls == operclass.end())
 171                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 172                         ifo->class_blocks.push_back(cls->second);
 173                 }
 174         }
 175
 176         tags = ConfTags("oper");
 177         for(ConfigIter i = tags.first; i != tags.second; ++i)
 178         {
 179                 ConfigTag* tag = i->second;
 180
 181                 std::string name = tag->getString("name");
 182                 if (name.empty())
 183                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 184
 185                 std::string type = tag->getString("type");
 186                 OperIndex::iterator tblk = OperTypes.find(type);
 187                 if (tblk == OperTypes.end())
 188                         throw CoreException("Oper block " + name + " has missing type " + type);
 189                 if (oper_blocks.find(name) != oper_blocks.end())
 190                         throw CoreException("Duplicate oper block with name " + name + " at " + tag->getTagLocation());
 191
 192                 OperInfo* ifo = new OperInfo(type);
 193                 ifo->oper_block = tag;
 194                 ifo->type_block = tblk->second->type_block;
 195                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 196                 oper_blocks[name] = ifo;
 197         }
 198 }
 199
 200 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 201 {
 202         typedef std::map<std::string, ConnectClass*> ClassMap;
 203         ClassMap oldBlocksByMask;
 204         if (current)
 205         {
 206                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 207                 {
 208                         ConnectClass* c = *i;
 209                         if (c->name.compare(0, 8, "unnamed-", 8))
 210                         {
 211                                 oldBlocksByMask["n" + c->name] = c;
 212                         }
 213                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 214                         {
 215                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 216                                 typeMask += c->host;
 217                                 oldBlocksByMask[typeMask] = c;
 218                         }
 219                 }
 220         }
 221
 222         size_t blk_count = config_data.count("connect");
 223         if (blk_count == 0)
 224         {
 225                 // No connect blocks found; make a trivial default block
 226                 ConfigItems* items;
 227                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 228                 (*items)["allow"] = "*";
 229                 config_data.insert(std::make_pair("connect", tag));
 230                 blk_count = 1;
 231         }
 232
 233         Classes.resize(blk_count);
 234         std::map<std::string, size_t> names;
 235
 236         bool try_again = true;
 237         for(size_t tries = 0; try_again; tries++)
 238         {
 239                 try_again = false;
 240                 ConfigTagList tags = ConfTags("connect");
 241                 size_t i = 0;
 242                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 243                 {
 244                         ConfigTag* tag = it->second;
 245                         if (Classes[i])
 246                                 continue;
 247
 248                         ConnectClass* parent = NULL;
 249                         std::string parentName = tag->getString("parent");
 250                         if (!parentName.empty())
 251                         {
 252                                 std::map<std::string, size_t>::const_iterator parentIter = names.find(parentName);
 253                                 if (parentIter == names.end())
 254                                 {
 255                                         try_again = true;
 256                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 257                                         if (tries >= blk_count)
 258                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 259                                         continue;
 260                                 }
 261                                 parent = Classes[parentIter->second];
 262                         }
 263
 264                         std::string name = tag->getString("name");
 265                         std::string mask, typeMask;
 266                         char type;
 267
 268                         if (tag->readString("allow", mask, false))
 269                         {
 270                                 type = CC_ALLOW;
 271                                 typeMask = 'a' + mask;
 272                         }
 273                         else if (tag->readString("deny", mask, false))
 274                         {
 275                                 type = CC_DENY;
 276                                 typeMask = 'd' + mask;
 277                         }
 278                         else if (!name.empty())
 279                         {
 280                                 type = CC_NAMED;
 281                                 mask = name;
 282                                 typeMask = 'n' + mask;
 283                         }
 284                         else
 285                         {
 286                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 287                         }
 288
 289                         if (name.empty())
 290                         {
 291                                 name = "unnamed-" + ConvToStr(i);
 292                         }
 293                         else
 294                         {
 295                                 typeMask = 'n' + name;
 296                         }
 297
 298                         if (names.find(name) != names.end())
 299                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 300                         names[name] = i;
 301
 302                         ConnectClass* me = parent ?
 303                                 new ConnectClass(tag, type, mask, *parent) :
 304                                 new ConnectClass(tag, type, mask);
 305
 306                         me->name = name;
 307
 308                         me->registration_timeout = tag->getDuration("timeout", me->registration_timeout);
 309                         me->pingtime = tag->getDuration("pingfreq", me->pingtime);
 310                         std::string sendq;
 311                         if (tag->readString("sendq", sendq))
 312                         {
 313                                 // attempt to guess a good hard/soft sendq from a single value
 314                                 unsigned long value = strtoul(sendq.c_str(), NULL, 10);
 315                                 if (value > 16384)
 316                                         me->softsendqmax = value / 16;
 317                                 else
 318                                         me->softsendqmax = value;
 319                                 me->hardsendqmax = value * 8;
 320                         }
 321                         me->softsendqmax = tag->getUInt("softsendq", me->softsendqmax);
 322                         me->hardsendqmax = tag->getUInt("hardsendq", me->hardsendqmax);
 323                         me->recvqmax = tag->getUInt("recvq", me->recvqmax);
 324                         me->penaltythreshold = tag->getUInt("threshold", me->penaltythreshold);
 325                         me->commandrate = tag->getUInt("commandrate", me->commandrate);
 326                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 327                         me->maxlocal = tag->getUInt("localmax", me->maxlocal);
 328                         me->maxglobal = tag->getUInt("globalmax", me->maxglobal);
 329                         me->maxchans = tag->getUInt("maxchans", me->maxchans);
 330                         me->maxconnwarn = tag->getBool("maxconnwarn", me->maxconnwarn);
 331                         me->limit = tag->getUInt("limit", me->limit);
 332                         me->resolvehostnames = tag->getBool("resolvehostnames", me->resolvehostnames);
 333
 334                         std::string ports = tag->getString("port");
 335                         if (!ports.empty())
 336                         {
 337                                 irc::portparser portrange(ports, false);
 338                                 while (int port = portrange.GetToken())
 339                                         me->ports.insert(port);
 340                         }
 341
 342                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 343                         if (oldMask != oldBlocksByMask.end())
 344                         {
 345                                 ConnectClass* old = oldMask->second;
 346                                 oldBlocksByMask.erase(oldMask);
 347                                 old->Update(me);
 348                                 delete me;
 349                                 me = old;
 350                         }
 351                         Classes[i] = me;
 352                 }
 353         }
 354 }
 355
 356 /** Represents a deprecated configuration tag.
 357  */
 358 struct DeprecatedConfig
 359 {
 360         /** Tag name. */
 361         std::string tag;
 362
 363         /** Attribute key. */
 364         std::string key;
 365
 366         /** Attribute value. */
 367         std::string value;
 368
 369         /** Reason for deprecation. */
 370         std::string reason;
 371 };
 372
 373 static const DeprecatedConfig ChangedConfig[] = {
 374         { "bind",        "transport",   "",                 "has been moved to <bind:ssl> as of 2.0" },
 375         { "die",         "value",       "",                 "you need to reread your config" },
 376         { "gnutls",      "starttls",    "",                 "has been replaced with m_starttls as of 3.0" },
 377         { "link",        "autoconnect", "",                 "2.0+ does not use this attribute - define <autoconnect> tags instead" },
 378         { "link",        "transport",   "",                 "has been moved to <link:ssl> as of 2.0" },
 379         { "module",      "name",        "m_chanprotect.so", "has been replaced with m_customprefix as of 3.0" },
 380         { "module",      "name",        "m_halfop.so",      "has been replaced with m_customprefix as of 3.0" },
 381         { "options",     "cyclehosts",  "",                 "has been replaced with m_hostcycle as of 3.0" },
 382         { "performance", "nouserdns",   "",                 "has been moved to <connect:resolvehostnames> as of 3.0" }
 383 };
 384
 385 void ServerConfig::Fill()
 386 {
 387         ConfigTag* options = ConfValue("options");
 388         ConfigTag* security = ConfValue("security");
 389         ConfigTag* server = ConfValue("server");
 390         if (sid.empty())
 391         {
 392                 ServerName = server->getString("name", "irc.example.com");
 393                 ValidHost(ServerName, "<server:name>");
 394
 395                 sid = server->getString("id");
 396                 if (!sid.empty() && !InspIRCd::IsSID(sid))
 397                         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.");
 398
 399                 CaseMapping = options->getString("casemapping", "rfc1459");
 400                 if (CaseMapping == "ascii")
 401                         national_case_insensitive_map = ascii_case_insensitive_map;
 402                 else if (CaseMapping == "rfc1459")
 403                         national_case_insensitive_map = rfc_case_insensitive_map;
 404                 else
 405                         throw CoreException("<options:casemapping> must be set to 'ascii', or 'rfc1459'");
 406         }
 407         else
 408         {
 409                 std::string name = server->getString("name");
 410                 if (!name.empty() && name != ServerName)
 411                         throw CoreException("You must restart to change the server name");
 412
 413                 std::string nsid = server->getString("id");
 414                 if (!nsid.empty() && nsid != sid)
 415                         throw CoreException("You must restart to change the server id");
 416
 417                 std::string casemapping = options->getString("casemapping");
 418                 if (!casemapping.empty() && casemapping != CaseMapping)
 419                         throw CoreException("You must restart to change the server casemapping");
 420
 421         }
 422         SoftLimit = ConfValue("performance")->getUInt("softlimit", (SocketEngine::GetMaxFds() > 0 ? SocketEngine::GetMaxFds() : LONG_MAX), 10);
 423         CCOnConnect = ConfValue("performance")->getBool("clonesonconnect", true);
 424         MaxConn = ConfValue("performance")->getUInt("somaxconn", SOMAXCONN);
 425         XLineMessage = options->getString("xlinemessage", options->getString("moronbanner", "You're banned!"));
 426         ServerDesc = server->getString("description", "Configure Me");
 427         Network = server->getString("network", "Network");
 428         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240, 1024, 65534);
 429         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 430         UserStats = security->getString("userstats");
 431         CustomVersion = security->getString("customversion");
 432         HideSplits = security->getBool("hidesplits");
 433         HideBans = security->getBool("hidebans");
 434         HideServer = security->getString("hideserver", security->getString("hidewhois"));
 435         HideKillsServer = security->getString("hidekills");
 436         HideULineKills = security->getBool("hideulinekills");
 437         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 438         GenericOper = security->getBool("genericoper");
 439         SyntaxHints = options->getBool("syntaxhints");
 440         CycleHostsFromUser = options->getBool("cyclehostsfromuser");
 441         FullHostInTopic = options->getBool("hostintopic");
 442         MaxTargets = security->getUInt("maxtargets", 20, 1, 31);
 443         DefaultModes = options->getString("defaultmodes", "not");
 444         PID = ConfValue("pid")->getString("file");
 445         MaxChans = ConfValue("channels")->getUInt("users", 20);
 446         OperMaxChans = ConfValue("channels")->getUInt("opers", 0);
 447         c_ipv4_range = ConfValue("cidr")->getUInt("ipv4clone", 32, 1, 32);
 448         c_ipv6_range = ConfValue("cidr")->getUInt("ipv6clone", 128, 1, 128);
 449         Limits = ServerLimits(ConfValue("limits"));
 450         Paths = ServerPaths(ConfValue("path"));
 451         NoSnoticeStack = options->getBool("nosnoticestack", false);
 452
 453         std::string defbind = options->getString("defaultbind");
 454         if (stdalgo::string::equalsci(defbind, "ipv4"))
 455         {
 456                 WildcardIPv6 = false;
 457         }
 458         else if (stdalgo::string::equalsci(defbind, "ipv6"))
 459         {
 460                 WildcardIPv6 = true;
 461         }
 462         else
 463         {
 464                 WildcardIPv6 = true;
 465                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 466                 if (socktest < 0)
 467                         WildcardIPv6 = false;
 468                 else
 469                         SocketEngine::Close(socktest);
 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         DisabledUModes.reset();
 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 valid mode character.
 482                 if (!ModeParser::IsModeChar(*p))
 483                         throw CoreException("Invalid usermode " + std::string(1, *p) + " was found.");
 484                 DisabledUModes.set(*p - 'A');
 485         }
 486
 487         DisabledCModes.reset();
 488         modes = ConfValue("disabled")->getString("chanmodes");
 489         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 490         {
 491                 if (!ModeParser::IsModeChar(*p))
 492                         throw CoreException("Invalid chanmode " + std::string(1, *p) + " was found.");
 493                 DisabledCModes.set(*p - 'A');
 494         }
 495 }
 496
 497 // WARNING: it is not safe to use most of the codebase in this function, as it
 498 // will run in the config reader thread
 499 void ServerConfig::Read()
 500 {
 501         /* Load and parse the config file, if there are any errors then explode */
 502
 503         ParseStack stack(this);
 504         try
 505         {
 506                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 507         }
 508         catch (CoreException& err)
 509         {
 510                 valid = false;
 511                 errstr << err.GetReason() << std::endl;
 512         }
 513 }
 514
 515 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 516 {
 517         valid = true;
 518         if (old)
 519         {
 520                 /*
 521                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 522                  */
 523                 this->CaseMapping = old->CaseMapping;
 524                 this->ServerName = old->ServerName;
 525                 this->sid = old->sid;
 526                 this->cmdline = old->cmdline;
 527         }
 528
 529         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 530         try
 531         {
 532                 for (unsigned long index = 0; index * sizeof(DeprecatedConfig) < sizeof(ChangedConfig); index++)
 533                 {
 534                         std::string value;
 535                         ConfigTagList tags = ConfTags(ChangedConfig[index].tag);
 536                         for(ConfigIter i = tags.first; i != tags.second; ++i)
 537                         {
 538                                 if (i->second->readString(ChangedConfig[index].key, value, true)
 539                                         && (ChangedConfig[index].value.empty() || value == ChangedConfig[index].value))
 540                                 {
 541                                         errstr << "Your configuration contains a deprecated value: <"  << ChangedConfig[index].tag;
 542                                         if (ChangedConfig[index].value.empty())
 543                                         {
 544                                                 errstr << ':' << ChangedConfig[index].key;
 545                                         }
 546                                         else
 547                                         {
 548                                                 errstr << ' ' << ChangedConfig[index].key << "=\"" << ChangedConfig[index].value << "\"";
 549                                         }
 550                                         errstr << "> - " << ChangedConfig[index].reason << " (at " << i->second->getTagLocation() << ")" << std::endl;
 551                                 }
 552                         }
 553                 }
 554
 555                 Fill();
 556
 557                 // Handle special items
 558                 CrossCheckOperClassType();
 559                 CrossCheckConnectBlocks(old);
 560         }
 561         catch (CoreException &ce)
 562         {
 563                 errstr << ce.GetReason() << std::endl;
 564         }
 565
 566         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 567         valid = errstr.str().empty();
 568
 569         // write once here, to try it out and make sure its ok
 570         if (valid)
 571                 ServerInstance->WritePID(this->PID, !old);
 572
 573         ConfigTagList binds = ConfTags("bind");
 574         if (binds.first == binds.second)
 575                  errstr << "Possible configuration error: you have not defined any <bind> blocks." << std::endl
 576                          << "You will need to do this if you want clients to be able to connect!" << std::endl;
 577
 578         if (old && valid)
 579         {
 580                 // On first run, ports are bound later on
 581                 FailedPortList pl;
 582                 ServerInstance->BindPorts(pl);
 583                 if (pl.size())
 584                 {
 585                         errstr << "Not all your client ports could be bound." << std::endl
 586                                 << "The following port(s) failed to bind:" << std::endl;
 587
 588                         int j = 1;
 589                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 590                         {
 591                                 errstr << j << ".\tAddress: " << i->first.str() << "\tReason: " << strerror(i->second) << std::endl;
 592                         }
 593                 }
 594         }
 595
 596         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 597
 598         if (!valid)
 599         {
 600                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "There were errors in your configuration file:");
 601                 Classes.clear();
 602         }
 603
 604         while (errstr.good())
 605         {
 606                 std::string line;
 607                 getline(errstr, line, '\n');
 608                 if (line.empty())
 609                         continue;
 610                 // On startup, print out to console (still attached at this point)
 611                 if (!old)
 612                         std::cout << line << std::endl;
 613                 // If a user is rehashing, tell them directly
 614                 if (user)
 615                         user->WriteRemoteNotice(InspIRCd::Format("*** %s", line.c_str()));
 616                 // Also tell opers
 617                 ServerInstance->SNO->WriteGlobalSno('a', line);
 618         }
 619
 620         errstr.clear();
 621         errstr.str(std::string());
 622
 623         // Re-parse our MOTD and RULES files for colors -- Justasic
 624         for (ClassVector::const_iterator it = this->Classes.begin(), it_end = this->Classes.end(); it != it_end; ++it)
 625         {
 626                 ConfigTag *tag = (*it)->config;
 627
 628                 ConfigFileCache::iterator file = this->Files.find(tag->getString("motd", "motd"));
 629                 if (file != this->Files.end())
 630                         InspIRCd::ProcessColors(file->second);
 631         }
 632
 633         /* No old configuration -> initial boot, nothing more to do here */
 634         if (!old)
 635         {
 636                 if (!valid)
 637                 {
 638                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 639                 }
 640
 641                 return;
 642         }
 643
 644
 645         // If there were errors processing configuration, don't touch modules.
 646         if (!valid)
 647                 return;
 648
 649         ApplyModules(user);
 650
 651         if (user)
 652                 user->WriteRemoteNotice("*** Successfully rehashed server.");
 653         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 654 }
 655
 656 void ServerConfig::ApplyModules(User* user)
 657 {
 658         std::vector<std::string> added_modules;
 659         ModuleManager::ModuleMap removed_modules = ServerInstance->Modules->GetModules();
 660
 661         ConfigTagList tags = ConfTags("module");
 662         for(ConfigIter i = tags.first; i != tags.second; ++i)
 663         {
 664                 ConfigTag* tag = i->second;
 665                 std::string name;
 666                 if (tag->readString("name", name))
 667                 {
 668                         name = ModuleManager::ExpandModName(name);
 669                         // if this module is already loaded, the erase will succeed, so we need do nothing
 670                         // otherwise, we need to add the module (which will be done later)
 671                         if (removed_modules.erase(name) == 0)
 672                                 added_modules.push_back(name);
 673                 }
 674         }
 675
 676         for (ModuleManager::ModuleMap::iterator i = removed_modules.begin(); i != removed_modules.end(); ++i)
 677         {
 678                 const std::string& modname = i->first;
 679                 // Don't remove core_*.so, just remove m_*.so
 680                 if (InspIRCd::Match(modname, "core_*.so", ascii_case_insensitive_map))
 681                         continue;
 682                 if (ServerInstance->Modules->Unload(i->second))
 683                 {
 684                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s", modname.c_str());
 685
 686                         if (user)
 687                                 user->WriteNumeric(RPL_UNLOADEDMODULE, modname, InspIRCd::Format("Module %s successfully unloaded.", modname.c_str()));
 688                         else
 689                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", modname.c_str());
 690                 }
 691                 else
 692                 {
 693                         if (user)
 694                                 user->WriteNumeric(ERR_CANTUNLOADMODULE, modname, InspIRCd::Format("Failed to unload module %s: %s", modname.c_str(), ServerInstance->Modules->LastError().c_str()));
 695                         else
 696                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", modname.c_str(), ServerInstance->Modules->LastError().c_str());
 697                 }
 698         }
 699
 700         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 701         {
 702                 // Skip modules which are already loaded.
 703                 if (ServerInstance->Modules->Find(*adding))
 704                         continue;
 705
 706                 if (ServerInstance->Modules->Load(*adding))
 707                 {
 708                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 709                         if (user)
 710                                 user->WriteNumeric(RPL_LOADEDMODULE, *adding, InspIRCd::Format("Module %s successfully loaded.", adding->c_str()));
 711                         else
 712                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 713                 }
 714                 else
 715                 {
 716                         if (user)
 717                                 user->WriteNumeric(ERR_CANTLOADMODULE, *adding, InspIRCd::Format("Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str()));
 718                         else
 719                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 720                 }
 721         }
 722 }
 723
 724 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 725 {
 726         ConfigTagList found = config_data.equal_range(tag);
 727         if (found.first == found.second)
 728                 return EmptyTag;
 729         ConfigTag* rv = found.first->second;
 730         found.first++;
 731         if (found.first != found.second)
 732                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 733                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 734         return rv;
 735 }
 736
 737 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 738 {
 739         return config_data.equal_range(tag);
 740 }
 741
 742 std::string ServerConfig::Escape(const std::string& str, bool xml)
 743 {
 744         std::string escaped;
 745         for (std::string::const_iterator it = str.begin(); it != str.end(); ++it)
 746         {
 747                 switch (*it)
 748                 {
 749                         case '"':
 750                                 escaped += xml ? "&quot;" : "\"";
 751                                 break;
 752                         case '&':
 753                                 escaped += xml ? "&amp;" : "&";
 754                                 break;
 755                         case '\\':
 756                                 escaped += xml ? "\\" : "\\\\";
 757                                 break;
 758                         default:
 759                                 escaped += *it;
 760                                 break;
 761                 }
 762         }
 763         return escaped;
 764 }
 765
 766 void ConfigReaderThread::Run()
 767 {
 768         Config->Read();
 769         done = true;
 770 }
 771
 772 void ConfigReaderThread::Finish()
 773 {
 774         ServerConfig* old = ServerInstance->Config;
 775         ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "Switching to new configuration...");
 776         ServerInstance->Config = this->Config;
 777         Config->Apply(old, TheUserUID);
 778
 779         if (Config->valid)
 780         {
 781                 /*
 782                  * Apply the changed configuration from the rehash.
 783                  *
 784                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 785                  * thoroughly!!!
 786                  */
 787                 ServerInstance->Users.RehashCloneCounts();
 788                 ServerInstance->XLines->CheckELines();
 789                 ServerInstance->XLines->ApplyLines();
 790                 Config->ApplyDisabledCommands();
 791                 User* user = ServerInstance->FindNick(TheUserUID);
 792
 793                 ConfigStatus status(user);
 794                 const ModuleManager::ModuleMap& mods = ServerInstance->Modules->GetModules();
 795                 for (ModuleManager::ModuleMap::const_iterator i = mods.begin(); i != mods.end(); ++i)
 796                 {
 797                         try
 798                         {
 799                                 ServerInstance->Logs->Log("MODULE", LOG_DEBUG, "Rehashing " + i->first);
 800                                 i->second->ReadConfig(status);
 801                         }
 802                         catch (CoreException& modex)
 803                         {
 804                                 ServerInstance->Logs->Log("MODULE", LOG_DEFAULT, "Exception caught: " + modex.GetReason());
 805                                 if (user)
 806                                         user->WriteNotice(i->first + ": " + modex.GetReason());
 807                         }
 808                 }
 809
 810                 // The description of this server may have changed - update it for WHOIS etc.
 811                 ServerInstance->FakeClient->server->description = Config->ServerDesc;
 812
 813                 ServerInstance->ISupport.Build();
 814
 815                 ServerInstance->Logs->CloseLogs();
 816                 ServerInstance->Logs->OpenFileLogs();
 817
 818                 if (Config->RawLog && !old->RawLog)
 819                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 820
 821                 Config = old;
 822         }
 823         else
 824         {
 825                 // whoops, abort!
 826                 ServerInstance->Config = old;
 827         }
 828 }