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 <fstream>
  27 #include "xline.h"
  28 #include "listmode.h"
  29 #include "exitcodes.h"
  30 #include "configparser.h"
  31 #include <iostream>
  32 #ifdef _WIN32
  33 #include <Iphlpapi.h>
  34 #pragma comment(lib, "Iphlpapi.lib")
  35 #endif
  36
  37 ServerConfig::ServerConfig()
  38 {
  39         RawLog = NoUserDns = HideBans = HideSplits = UndernetMsgPrefix = false;
  40         WildcardIPv6 = CycleHosts = InvBypassModes = true;
  41         dns_timeout = 5;
  42         MaxTargets = 20;
  43         NetBufferSize = 10240;
  44         SoftLimit = ServerInstance->SE->GetMaxFds();
  45         MaxConn = SOMAXCONN;
  46         MaxChans = 20;
  47         OperMaxChans = 30;
  48         c_ipv4_range = 32;
  49         c_ipv6_range = 128;
  50 }
  51
  52 template<typename T, typename V>
  53 static void range(T& value, V min, V max, V def, const char* msg)
  54 {
  55         if (value >= (T)min && value <= (T)max)
  56                 return;
  57         ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT,
  58                 "WARNING: %s value of %ld is not between %ld and %ld; set to %ld.",
  59                 msg, (long)value, (long)min, (long)max, (long)def);
  60         value = def;
  61 }
  62
  63
  64 static void ValidIP(const std::string& ip, const std::string& key)
  65 {
  66         irc::sockets::sockaddrs dummy;
  67         if (!irc::sockets::aptosa(ip, 0, dummy))
  68                 throw CoreException("The value of "+key+" is not an IP address");
  69 }
  70
  71 static void ValidHost(const std::string& p, const std::string& msg)
  72 {
  73         int num_dots = 0;
  74         if (p.empty() || p[0] == '.')
  75                 throw CoreException("The value of "+msg+" is not a valid hostname");
  76         for (unsigned int i=0;i < p.length();i++)
  77         {
  78                 switch (p[i])
  79                 {
  80                         case ' ':
  81                                 throw CoreException("The value of "+msg+" is not a valid hostname");
  82                         case '.':
  83                                 num_dots++;
  84                         break;
  85                 }
  86         }
  87         if (num_dots == 0)
  88                 throw CoreException("The value of "+msg+" is not a valid hostname");
  89 }
  90
  91 bool ServerConfig::ApplyDisabledCommands(const std::string& data)
  92 {
  93         std::stringstream dcmds(data);
  94         std::string thiscmd;
  95
  96         /* Enable everything first */
  97         for (Commandtable::iterator x = ServerInstance->Parser->cmdlist.begin(); x != ServerInstance->Parser->cmdlist.end(); x++)
  98                 x->second->Disable(false);
  99
 100         /* Now disable all the ones which the user wants disabled */
 101         while (dcmds >> thiscmd)
 102         {
 103                 Commandtable::iterator cm = ServerInstance->Parser->cmdlist.find(thiscmd);
 104                 if (cm != ServerInstance->Parser->cmdlist.end())
 105                 {
 106                         cm->second->Disable(true);
 107                 }
 108         }
 109         return true;
 110 }
 111
 112 static void FindDNS(std::string& server)
 113 {
 114         if (!server.empty())
 115                 return;
 116 #ifdef _WIN32
 117         // attempt to look up their nameserver from the system
 118         ServerInstance->Logs->Log("CONFIG",LOG_DEFAULT,"WARNING: <dns:server> not defined, attempting to find a working server in the system settings...");
 119
 120         PFIXED_INFO pFixedInfo;
 121         DWORD dwBufferSize = sizeof(FIXED_INFO);
 122         pFixedInfo = (PFIXED_INFO) HeapAlloc(GetProcessHeap(), 0, sizeof(FIXED_INFO));
 123
 124         if(pFixedInfo)
 125         {
 126                 if (GetNetworkParams(pFixedInfo, &dwBufferSize) == ERROR_BUFFER_OVERFLOW) {
 127                         HeapFree(GetProcessHeap(), 0, pFixedInfo);
 128                         pFixedInfo = (PFIXED_INFO) HeapAlloc(GetProcessHeap(), 0, dwBufferSize);
 129                 }
 130
 131                 if(pFixedInfo) {
 132                         if (GetNetworkParams(pFixedInfo, &dwBufferSize) == NO_ERROR)
 133                                 server = pFixedInfo->DnsServerList.IpAddress.String;
 134
 135                         HeapFree(GetProcessHeap(), 0, pFixedInfo);
 136                 }
 137
 138                 if(!server.empty())
 139                 {
 140                         ServerInstance->Logs->Log("CONFIG",LOG_DEFAULT,"<dns:server> set to '%s' as first active resolver in the system settings.", server.c_str());
 141                         return;
 142                 }
 143         }
 144
 145         ServerInstance->Logs->Log("CONFIG",LOG_DEFAULT,"No viable nameserver found! Defaulting to nameserver '127.0.0.1'!");
 146 #else
 147         // attempt to look up their nameserver from /etc/resolv.conf
 148         ServerInstance->Logs->Log("CONFIG",LOG_DEFAULT,"WARNING: <dns:server> not defined, attempting to find working server in /etc/resolv.conf...");
 149
 150         std::ifstream resolv("/etc/resolv.conf");
 151
 152         while (resolv >> server)
 153         {
 154                 if (server == "nameserver")
 155                 {
 156                         resolv >> server;
 157                         if (server.find_first_not_of("0123456789.") == std::string::npos)
 158                         {
 159                                 ServerInstance->Logs->Log("CONFIG",LOG_DEFAULT,"<dns:server> set to '%s' as first resolver in /etc/resolv.conf.",server.c_str());
 160                                 return;
 161                         }
 162                 }
 163         }
 164
 165         ServerInstance->Logs->Log("CONFIG",LOG_DEFAULT,"/etc/resolv.conf contains no viable nameserver entries! Defaulting to nameserver '127.0.0.1'!");
 166 #endif
 167         server = "127.0.0.1";
 168 }
 169
 170 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
 171 {
 172         ConfigTagList tags = conf->ConfTags(tag);
 173         for(ConfigIter i = tags.first; i != tags.second; ++i)
 174         {
 175                 ConfigTag* ctag = i->second;
 176                 std::string mask;
 177                 if (!ctag->readString(key, mask))
 178                         throw CoreException("<"+tag+":"+key+"> missing at " + ctag->getTagLocation());
 179                 std::string reason = ctag->getString("reason", "<Config>");
 180                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
 181                 if (!ServerInstance->XLines->AddLine(xl, NULL))
 182                         delete xl;
 183         }
 184 }
 185
 186 typedef std::map<std::string, ConfigTag*> LocalIndex;
 187 void ServerConfig::CrossCheckOperClassType()
 188 {
 189         LocalIndex operclass;
 190         ConfigTagList tags = ConfTags("class");
 191         for(ConfigIter i = tags.first; i != tags.second; ++i)
 192         {
 193                 ConfigTag* tag = i->second;
 194                 std::string name = tag->getString("name");
 195                 if (name.empty())
 196                         throw CoreException("<class:name> missing from tag at " + tag->getTagLocation());
 197                 if (operclass.find(name) != operclass.end())
 198                         throw CoreException("Duplicate class block with name " + name + " at " + tag->getTagLocation());
 199                 operclass[name] = tag;
 200         }
 201         tags = ConfTags("type");
 202         for(ConfigIter i = tags.first; i != tags.second; ++i)
 203         {
 204                 ConfigTag* tag = i->second;
 205                 std::string name = tag->getString("name");
 206                 if (name.empty())
 207                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
 208                 if (!ServerInstance->IsNick(name, Limits.NickMax))
 209                         throw CoreException("<type:name> is invalid (value '" + name + "')");
 210                 if (oper_blocks.find(" " + name) != oper_blocks.end())
 211                         throw CoreException("Duplicate type block with name " + name + " at " + tag->getTagLocation());
 212
 213                 OperInfo* ifo = new OperInfo;
 214                 oper_blocks[" " + name] = ifo;
 215                 ifo->name = name;
 216                 ifo->type_block = tag;
 217
 218                 std::string classname;
 219                 irc::spacesepstream str(tag->getString("classes"));
 220                 while (str.GetToken(classname))
 221                 {
 222                         LocalIndex::iterator cls = operclass.find(classname);
 223                         if (cls == operclass.end())
 224                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 225                         ifo->class_blocks.push_back(cls->second);
 226                 }
 227         }
 228
 229         tags = ConfTags("oper");
 230         for(ConfigIter i = tags.first; i != tags.second; ++i)
 231         {
 232                 ConfigTag* tag = i->second;
 233
 234                 std::string name = tag->getString("name");
 235                 if (name.empty())
 236                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 237
 238                 std::string type = tag->getString("type");
 239                 OperIndex::iterator tblk = oper_blocks.find(" " + type);
 240                 if (tblk == oper_blocks.end())
 241                         throw CoreException("Oper block " + name + " has missing type " + type);
 242                 if (oper_blocks.find(name) != oper_blocks.end())
 243                         throw CoreException("Duplicate oper block with name " + name + " at " + tag->getTagLocation());
 244
 245                 OperInfo* ifo = new OperInfo;
 246                 ifo->name = type;
 247                 ifo->oper_block = tag;
 248                 ifo->type_block = tblk->second->type_block;
 249                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 250                 oper_blocks[name] = ifo;
 251         }
 252 }
 253
 254 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 255 {
 256         typedef std::map<std::string, ConnectClass*> ClassMap;
 257         ClassMap oldBlocksByMask;
 258         if (current)
 259         {
 260                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 261                 {
 262                         ConnectClass* c = *i;
 263                         if (c->name.substr(0, 8) != "unnamed-")
 264                         {
 265                                 oldBlocksByMask["n" + c->name] = c;
 266                         }
 267                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 268                         {
 269                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 270                                 typeMask += c->host;
 271                                 oldBlocksByMask[typeMask] = c;
 272                         }
 273                 }
 274         }
 275
 276         int blk_count = config_data.count("connect");
 277         if (blk_count == 0)
 278         {
 279                 // No connect blocks found; make a trivial default block
 280                 std::vector<KeyVal>* items;
 281                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 282                 items->push_back(std::make_pair("allow", "*"));
 283                 config_data.insert(std::make_pair("connect", tag));
 284                 blk_count = 1;
 285         }
 286
 287         Classes.resize(blk_count);
 288         std::map<std::string, int> names;
 289
 290         bool try_again = true;
 291         for(int tries=0; try_again; tries++)
 292         {
 293                 try_again = false;
 294                 ConfigTagList tags = ConfTags("connect");
 295                 int i=0;
 296                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 297                 {
 298                         ConfigTag* tag = it->second;
 299                         if (Classes[i])
 300                                 continue;
 301
 302                         ConnectClass* parent = NULL;
 303                         std::string parentName = tag->getString("parent");
 304                         if (!parentName.empty())
 305                         {
 306                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 307                                 if (parentIter == names.end())
 308                                 {
 309                                         try_again = true;
 310                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 311                                         if (tries >= blk_count)
 312                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 313                                         continue;
 314                                 }
 315                                 parent = Classes[parentIter->second];
 316                         }
 317
 318                         std::string name = tag->getString("name");
 319                         std::string mask, typeMask;
 320                         char type;
 321
 322                         if (tag->readString("allow", mask, false))
 323                         {
 324                                 type = CC_ALLOW;
 325                                 typeMask = 'a' + mask;
 326                         }
 327                         else if (tag->readString("deny", mask, false))
 328                         {
 329                                 type = CC_DENY;
 330                                 typeMask = 'd' + mask;
 331                         }
 332                         else if (!name.empty())
 333                         {
 334                                 type = CC_NAMED;
 335                                 mask = name;
 336                                 typeMask = 'n' + mask;
 337                         }
 338                         else
 339                         {
 340                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 341                         }
 342
 343                         if (name.empty())
 344                         {
 345                                 name = "unnamed-" + ConvToStr(i);
 346                         }
 347                         else
 348                         {
 349                                 typeMask = 'n' + name;
 350                         }
 351
 352                         if (names.find(name) != names.end())
 353                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 354                         names[name] = i;
 355
 356                         ConnectClass* me = parent ?
 357                                 new ConnectClass(tag, type, mask, *parent) :
 358                                 new ConnectClass(tag, type, mask);
 359
 360                         me->name = name;
 361
 362                         me->registration_timeout = tag->getInt("timeout", me->registration_timeout);
 363                         me->pingtime = tag->getInt("pingfreq", me->pingtime);
 364                         std::string sendq;
 365                         if (tag->readString("sendq", sendq))
 366                         {
 367                                 // attempt to guess a good hard/soft sendq from a single value
 368                                 long value = atol(sendq.c_str());
 369                                 if (value > 16384)
 370                                         me->softsendqmax = value / 16;
 371                                 else
 372                                         me->softsendqmax = value;
 373                                 me->hardsendqmax = value * 8;
 374                         }
 375                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 376                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 377                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 378                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 379                         me->commandrate = tag->getInt("commandrate", me->commandrate);
 380                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 381                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 382                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 383                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 384                         me->maxconnwarn = tag->getBool("maxconnwarn", me->maxconnwarn);
 385                         me->limit = tag->getInt("limit", me->limit);
 386
 387                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 388                         if (oldMask != oldBlocksByMask.end())
 389                         {
 390                                 ConnectClass* old = oldMask->second;
 391                                 oldBlocksByMask.erase(oldMask);
 392                                 old->Update(me);
 393                                 delete me;
 394                                 me = old;
 395                         }
 396                         Classes[i] = me;
 397                 }
 398         }
 399 }
 400
 401 /** Represents a deprecated configuration tag.
 402  */
 403 struct DeprecatedConfig
 404 {
 405         /** Tag name. */
 406         std::string tag;
 407
 408         /** Attribute key. */
 409         std::string key;
 410
 411         /** Attribute value. */
 412         std::string value;
 413
 414         /** Reason for deprecation. */
 415         std::string reason;
 416 };
 417
 418 static const DeprecatedConfig ChangedConfig[] = {
 419         { "bind",   "transport",   "",                 "has been moved to <bind:ssl> as of 2.0" },
 420         { "die",    "value",       "",                 "you need to reread your config" },
 421         { "link",   "autoconnect", "",                 "2.0+ does not use this attribute - define <autoconnect> tags instead" },
 422         { "link",   "transport",   "",                 "has been moved to <link:ssl> as of 2.0" },
 423         { "module", "name",        "m_chanprotect.so", "has been replaced with m_customprefix as of 2.2" },
 424         { "module", "name",        "m_halfop.so",      "has been replaced with m_customprefix as of 2.2" },
 425 };
 426
 427 void ServerConfig::Fill()
 428 {
 429         ConfigTag* options = ConfValue("options");
 430         ConfigTag* security = ConfValue("security");
 431         if (sid.empty())
 432         {
 433                 ServerName = ConfValue("server")->getString("name");
 434                 sid = ConfValue("server")->getString("id");
 435                 ValidHost(ServerName, "<server:name>");
 436                 if (!sid.empty() && !InspIRCd::IsSID(sid))
 437                         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.");
 438         }
 439         else
 440         {
 441                 if (ServerName != ConfValue("server")->getString("name"))
 442                         throw CoreException("You must restart to change the server name or SID");
 443                 std::string nsid = ConfValue("server")->getString("id");
 444                 if (!nsid.empty() && nsid != sid)
 445                         throw CoreException("You must restart to change the server name or SID");
 446         }
 447         diepass = ConfValue("power")->getString("diepass");
 448         restartpass = ConfValue("power")->getString("restartpass");
 449         powerhash = ConfValue("power")->getString("hash");
 450         PrefixQuit = options->getString("prefixquit");
 451         SuffixQuit = options->getString("suffixquit");
 452         FixedQuit = options->getString("fixedquit");
 453         PrefixPart = options->getString("prefixpart");
 454         SuffixPart = options->getString("suffixpart");
 455         FixedPart = options->getString("fixedpart");
 456         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 457         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 458         MoronBanner = options->getString("moronbanner", "You're banned!");
 459         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 460         Network = ConfValue("server")->getString("network", "Network");
 461         AdminName = ConfValue("admin")->getString("name", "");
 462         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 463         AdminNick = ConfValue("admin")->getString("nick", "admin");
 464         ModPath = ConfValue("path")->getString("moduledir", MOD_PATH);
 465         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 466         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 467         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 468         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 469         UserStats = security->getString("userstats");
 470         CustomVersion = security->getString("customversion", Network + " IRCd");
 471         HideSplits = security->getBool("hidesplits");
 472         HideBans = security->getBool("hidebans");
 473         HideWhoisServer = security->getString("hidewhois");
 474         HideKillsServer = security->getString("hidekills");
 475         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 476         GenericOper = security->getBool("genericoper");
 477         NoUserDns = ConfValue("performance")->getBool("nouserdns");
 478         SyntaxHints = options->getBool("syntaxhints");
 479         CycleHosts = options->getBool("cyclehosts");
 480         CycleHostsFromUser = options->getBool("cyclehostsfromuser");
 481         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 482         FullHostInTopic = options->getBool("hostintopic");
 483         MaxTargets = security->getInt("maxtargets", 20);
 484         DefaultModes = options->getString("defaultmodes", "nt");
 485         PID = ConfValue("pid")->getString("file");
 486         MaxChans = ConfValue("channels")->getInt("users", 20);
 487         OperMaxChans = ConfValue("channels")->getInt("opers", 60);
 488         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 489         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 490         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 491         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 492         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 493         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 494         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 495         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 496         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 497         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 498         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 499         InvBypassModes = options->getBool("invitebypassmodes", true);
 500         NoSnoticeStack = options->getBool("nosnoticestack", false);
 501
 502         range(SoftLimit, 10, ServerInstance->SE->GetMaxFds(), ServerInstance->SE->GetMaxFds(), "<performance:softlimit>");
 503         range(MaxConn, 0, SOMAXCONN, SOMAXCONN, "<performance:somaxconn>");
 504         range(MaxTargets, 1, 31, 20, "<security:maxtargets>");
 505         range(NetBufferSize, 1024, 65534, 10240, "<performance:netbuffersize>");
 506
 507         ValidIP(DNSServer, "<dns:server>");
 508
 509         std::string defbind = options->getString("defaultbind");
 510         if (assign(defbind) == "ipv4")
 511         {
 512                 WildcardIPv6 = false;
 513         }
 514         else if (assign(defbind) == "ipv6")
 515         {
 516                 WildcardIPv6 = true;
 517         }
 518         else
 519         {
 520                 WildcardIPv6 = true;
 521                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 522                 if (socktest < 0)
 523                         WildcardIPv6 = false;
 524                 else
 525                         ServerInstance->SE->Close(socktest);
 526         }
 527         ConfigTagList tags = ConfTags("uline");
 528         for(ConfigIter i = tags.first; i != tags.second; ++i)
 529         {
 530                 ConfigTag* tag = i->second;
 531                 std::string server;
 532                 if (!tag->readString("server", server))
 533                         throw CoreException("<uline> tag missing server at " + tag->getTagLocation());
 534                 ulines[assign(server)] = tag->getBool("silent");
 535         }
 536
 537         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 538         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 539         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 540         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 541
 542         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 543         std::string modes = ConfValue("disabled")->getString("usermodes");
 544         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 545         {
 546                 // Complain when the character is not a-z or A-Z
 547                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 548                         throw CoreException("Invalid usermode " + std::string(1, *p) + " was found.");
 549                 DisabledUModes[*p - 'A'] = 1;
 550         }
 551
 552         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 553         modes = ConfValue("disabled")->getString("chanmodes");
 554         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 555         {
 556                 if ((*p < 'A') || (*p > 'z') || ((*p < 'a') && (*p > 'Z')))
 557                         throw CoreException("Invalid chanmode " + std::string(1, *p) + " was found.");
 558                 DisabledCModes[*p - 'A'] = 1;
 559         }
 560
 561         memset(HideModeLists, 0, sizeof(HideModeLists));
 562         modes = ConfValue("security")->getString("hidemodes");
 563         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
 564                 HideModeLists[(unsigned char) *p] = true;
 565
 566         std::string v = security->getString("announceinvites");
 567
 568         if (v == "ops")
 569                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 570         else if (v == "all")
 571                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 572         else if (v == "dynamic")
 573                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 574         else
 575                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 576
 577         v = security->getString("operspywhois");
 578         if (v == "splitmsg")
 579                 OperSpyWhois = SPYWHOIS_SPLITMSG;
 580         else if (v == "on" || v == "yes")
 581                 OperSpyWhois = SPYWHOIS_SINGLEMSG;
 582         else
 583                 OperSpyWhois = SPYWHOIS_NONE;
 584 }
 585
 586 // WARNING: it is not safe to use most of the codebase in this function, as it
 587 // will run in the config reader thread
 588 void ServerConfig::Read()
 589 {
 590         /* Load and parse the config file, if there are any errors then explode */
 591
 592         ParseStack stack(this);
 593         try
 594         {
 595                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 596         }
 597         catch (CoreException& err)
 598         {
 599                 valid = false;
 600                 errstr << err.GetReason();
 601         }
 602         if (valid)
 603         {
 604                 DNSServer = ConfValue("dns")->getString("server");
 605                 FindDNS(DNSServer);
 606         }
 607 }
 608
 609 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 610 {
 611         valid = true;
 612         if (old)
 613         {
 614                 /*
 615                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 616                  */
 617                 this->ServerName = old->ServerName;
 618                 this->sid = old->sid;
 619                 this->cmdline = old->cmdline;
 620         }
 621
 622         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 623         try
 624         {
 625                 for (int index = 0; index * sizeof(DeprecatedConfig) < sizeof(ChangedConfig); index++)
 626                 {
 627                         std::string value;
 628                         ConfigTagList tags = ConfTags(ChangedConfig[index].tag);
 629                         for(ConfigIter i = tags.first; i != tags.second; ++i)
 630                         {
 631                                 if (i->second->readString(ChangedConfig[index].key, value, true)
 632                                         && (ChangedConfig[index].value.empty() || value == ChangedConfig[index].value))
 633                                 {
 634                                         errstr << "Your configuration contains a deprecated value: <"  << ChangedConfig[index].tag;
 635                                         if (ChangedConfig[index].value.empty())
 636                                         {
 637                                                 errstr << ':' << ChangedConfig[index].key;
 638                                         }
 639                                         else
 640                                         {
 641                                                 errstr << ' ' << ChangedConfig[index].key << "=\"" << ChangedConfig[index].value << "\"";
 642                                         }
 643                                         errstr << "> - " << ChangedConfig[index].reason << " (at " << i->second->getTagLocation() << ")\n";
 644                                 }
 645                         }
 646                 }
 647
 648                 Fill();
 649
 650                 // Handle special items
 651                 CrossCheckOperClassType();
 652                 CrossCheckConnectBlocks(old);
 653         }
 654         catch (CoreException &ce)
 655         {
 656                 errstr << ce.GetReason();
 657         }
 658
 659         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 660         valid = errstr.str().empty();
 661
 662         // write once here, to try it out and make sure its ok
 663         if (valid)
 664                 ServerInstance->WritePID(this->PID);
 665
 666         if (old)
 667         {
 668                 // On first run, ports are bound later on
 669                 FailedPortList pl;
 670                 ServerInstance->BindPorts(pl);
 671                 if (pl.size())
 672                 {
 673                         errstr << "Not all your client ports could be bound.\nThe following port(s) failed to bind:\n";
 674
 675                         int j = 1;
 676                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 677                         {
 678                                 char buf[MAXBUF];
 679                                 snprintf(buf, MAXBUF, "%d.   Address: %s   Reason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 680                                 errstr << buf;
 681                         }
 682                 }
 683         }
 684
 685         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 686
 687         if (!valid)
 688                 ServerInstance->Logs->Log("CONFIG",LOG_DEFAULT, "There were errors in your configuration file:");
 689
 690         while (errstr.good())
 691         {
 692                 std::string line;
 693                 getline(errstr, line, '\n');
 694                 if (line.empty())
 695                         continue;
 696                 // On startup, print out to console (still attached at this point)
 697                 if (!old)
 698                         std::cout << line << std::endl;
 699                 // If a user is rehashing, tell them directly
 700                 if (user)
 701                         user->SendText(":%s NOTICE %s :*** %s", ServerInstance->Config->ServerName.c_str(), user->nick.c_str(), line.c_str());
 702                 // Also tell opers
 703                 ServerInstance->SNO->WriteGlobalSno('a', line);
 704         }
 705
 706         errstr.clear();
 707         errstr.str(std::string());
 708
 709         // Re-parse our MOTD and RULES files for colors -- Justasic
 710         for (ClassVector::const_iterator it = this->Classes.begin(), it_end = this->Classes.end(); it != it_end; ++it)
 711         {
 712                 ConfigTag *tag = (*it)->config;
 713                 // Make sure our connection class allows motd colors
 714                 if(!tag->getBool("allowmotdcolors"))
 715                       continue;
 716
 717                 ConfigFileCache::iterator file = this->Files.find(tag->getString("motd", "motd"));
 718                 if (file != this->Files.end())
 719                       InspIRCd::ProcessColors(file->second);
 720
 721                 file = this->Files.find(tag->getString("rules", "rules"));
 722                 if (file != this->Files.end())
 723                       InspIRCd::ProcessColors(file->second);
 724         }
 725
 726         /* No old configuration -> initial boot, nothing more to do here */
 727         if (!old)
 728         {
 729                 if (!valid)
 730                 {
 731                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 732                 }
 733
 734                 return;
 735         }
 736
 737
 738         // If there were errors processing configuration, don't touch modules.
 739         if (!valid)
 740                 return;
 741
 742         ApplyModules(user);
 743
 744         if (user)
 745                 user->SendText(":%s NOTICE %s :*** Successfully rehashed server.",
 746                         ServerInstance->Config->ServerName.c_str(), user->nick.c_str());
 747         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 748 }
 749
 750 void ServerConfig::ApplyModules(User* user)
 751 {
 752         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
 753         std::vector<std::string> added_modules;
 754         std::set<std::string> removed_modules(v.begin(), v.end());
 755
 756         ConfigTagList tags = ConfTags("module");
 757         for(ConfigIter i = tags.first; i != tags.second; ++i)
 758         {
 759                 ConfigTag* tag = i->second;
 760                 std::string name;
 761                 if (tag->readString("name", name))
 762                 {
 763                         // if this module is already loaded, the erase will succeed, so we need do nothing
 764                         // otherwise, we need to add the module (which will be done later)
 765                         if (removed_modules.erase(name) == 0)
 766                                 added_modules.push_back(name);
 767                 }
 768         }
 769
 770         if (ConfValue("options")->getBool("allowhalfop") && removed_modules.erase("m_halfop.so") == 0)
 771                 added_modules.push_back("m_halfop.so");
 772
 773         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 774         {
 775                 // Don't remove cmd_*.so, just remove m_*.so
 776                 if (removing->c_str()[0] == 'c')
 777                         continue;
 778                 Module* m = ServerInstance->Modules->Find(*removing);
 779                 if (m && ServerInstance->Modules->Unload(m))
 780                 {
 781                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
 782
 783                         if (user)
 784                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
 785                         else
 786                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
 787                 }
 788                 else
 789                 {
 790                         if (user)
 791                                 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());
 792                         else
 793                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
 794                 }
 795         }
 796
 797         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 798         {
 799                 if (ServerInstance->Modules->Load(adding->c_str()))
 800                 {
 801                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 802                         if (user)
 803                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
 804                         else
 805                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 806                 }
 807                 else
 808                 {
 809                         if (user)
 810                                 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());
 811                         else
 812                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 813                 }
 814         }
 815 }
 816
 817 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
 818 {
 819         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
 820 }
 821
 822 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 823 {
 824         ConfigTagList found = config_data.equal_range(tag);
 825         if (found.first == found.second)
 826                 return NULL;
 827         ConfigTag* rv = found.first->second;
 828         found.first++;
 829         if (found.first != found.second)
 830                 ServerInstance->Logs->Log("CONFIG",LOG_DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 831                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 832         return rv;
 833 }
 834
 835 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 836 {
 837         return config_data.equal_range(tag);
 838 }
 839
 840 bool ServerConfig::FileExists(const char* file)
 841 {
 842         struct stat sb;
 843         if (stat(file, &sb) == -1)
 844                 return false;
 845
 846         if ((sb.st_mode & S_IFDIR) > 0)
 847                 return false;
 848
 849         FILE *input = fopen(file, "r");
 850         if (input == NULL)
 851                 return false;
 852         else
 853         {
 854                 fclose(input);
 855                 return true;
 856         }
 857 }
 858
 859 const char* ServerConfig::CleanFilename(const char* name)
 860 {
 861         const char* p = name + strlen(name);
 862         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
 863         return (p != name ? ++p : p);
 864 }
 865
 866 const std::string& ServerConfig::GetSID()
 867 {
 868         return sid;
 869 }
 870
 871 void ConfigReaderThread::Run()
 872 {
 873         Config->Read();
 874         done = true;
 875 }
 876
 877 void ConfigReaderThread::Finish()
 878 {
 879         ServerConfig* old = ServerInstance->Config;
 880         ServerInstance->Logs->Log("CONFIG",LOG_DEBUG,"Switching to new configuration...");
 881         ServerInstance->Config = this->Config;
 882         Config->Apply(old, TheUserUID);
 883
 884         if (Config->valid)
 885         {
 886                 /*
 887                  * Apply the changed configuration from the rehash.
 888                  *
 889                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 890                  * thoroughly!!!
 891                  */
 892                 ServerInstance->XLines->CheckELines();
 893                 ServerInstance->XLines->ApplyLines();
 894                 ServerInstance->Res->Rehash();
 895                 ModeReference ban(NULL, "ban");
 896                 static_cast<ListModeBase*>(*ban)->DoRehash();
 897                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 898                 User* user = ServerInstance->FindNick(TheUserUID);
 899                 FOREACH_MOD(I_OnRehash, OnRehash(user));
 900                 ServerInstance->ISupport.Build();
 901
 902                 ServerInstance->Logs->CloseLogs();
 903                 ServerInstance->Logs->OpenFileLogs();
 904
 905                 if (Config->RawLog && !old->RawLog)
 906                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
 907
 908                 Config = old;
 909         }
 910         else
 911         {
 912                 // whoops, abort!
 913                 ServerInstance->Config = old;
 914         }
 915 }