src/configreader.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2010 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *          the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "inspircd.h"
  15 #include <fstream>
  16 #include "xline.h"
  17 #include "exitcodes.h"
  18 #include "commands/cmd_whowas.h"
  19 #include "configparser.h"
  20
  21 ServerConfig::ServerConfig()
  22 {
  23         WhoWasGroupSize = WhoWasMaxGroups = WhoWasMaxKeep = 0;
  24         NoUserDns = OperSpyWhois = HideBans = HideSplits = UndernetMsgPrefix = false;
  25         WildcardIPv6 = CycleHosts = InvBypassModes = true;
  26         dns_timeout = 5;
  27         MaxTargets = 20;
  28         NetBufferSize = 10240;
  29         SoftLimit = ServerInstance->SE->GetMaxFds();
  30         MaxConn = SOMAXCONN;
  31         MaxChans = 20;
  32         OperMaxChans = 30;
  33         c_ipv4_range = 32;
  34         c_ipv6_range = 128;
  35 }
  36
  37 void ServerConfig::Update005()
  38 {
  39         std::stringstream out(data005);
  40         std::vector<std::string> data;
  41         std::string token;
  42         while (out >> token)
  43                 data.push_back(token);
  44         sort(data.begin(), data.end());
  45
  46         std::string line5;
  47         isupport.clear();
  48         for(unsigned int i=0; i < data.size(); i++)
  49         {
  50                 token = data[i];
  51                 line5 = line5 + token + " ";
  52                 if (i % 13 == 12)
  53                 {
  54                         line5.append(":are supported by this server");
  55                         isupport.push_back(line5);
  56                         line5.clear();
  57                 }
  58         }
  59         if (!line5.empty())
  60         {
  61                 line5.append(":are supported by this server");
  62                 isupport.push_back(line5);
  63         }
  64 }
  65
  66 void ServerConfig::Send005(User* user)
  67 {
  68         for (std::vector<std::string>::iterator line = ServerInstance->Config->isupport.begin(); line != ServerInstance->Config->isupport.end(); line++)
  69                 user->WriteNumeric(RPL_ISUPPORT, "%s %s", user->nick.c_str(), line->c_str());
  70 }
  71
  72 template<typename T, typename V>
  73 static void range(T& value, V min, V max, V def, const char* msg)
  74 {
  75         if (value >= (T)min && value <= (T)max)
  76                 return;
  77         ServerInstance->Logs->Log("CONFIG", DEFAULT,
  78                 "WARNING: %s value of %ld is not between %ld and %ld; set to %ld.",
  79                 msg, (long)value, (long)min, (long)max, (long)def);
  80         value = def;
  81 }
  82
  83
  84 static void ValidIP(const std::string& ip, const std::string& key)
  85 {
  86         irc::sockets::sockaddrs dummy;
  87         if (!irc::sockets::aptosa(ip, 0, dummy))
  88                 throw CoreException("The value of "+key+" is not an IP address");
  89 }
  90
  91 static void ValidHost(const std::string& p, const std::string& msg)
  92 {
  93         int num_dots = 0;
  94         if (p.empty() || p[0] == '.')
  95                 throw CoreException("The value of "+msg+" is not a valid hostname");
  96         for (unsigned int i=0;i < p.length();i++)
  97         {
  98                 switch (p[i])
  99                 {
 100                         case ' ':
 101                                 throw CoreException("The value of "+msg+" is not a valid hostname");
 102                         case '.':
 103                                 num_dots++;
 104                         break;
 105                 }
 106         }
 107         if (num_dots == 0)
 108                 throw CoreException("The value of "+msg+" is not a valid hostname");
 109 }
 110
 111 bool ServerConfig::ApplyDisabledCommands(const std::string& data)
 112 {
 113         std::stringstream dcmds(data);
 114         std::string thiscmd;
 115
 116         /* Enable everything first */
 117         for (Commandtable::iterator x = ServerInstance->Parser->cmdlist.begin(); x != ServerInstance->Parser->cmdlist.end(); x++)
 118                 x->second->Disable(false);
 119
 120         /* Now disable all the ones which the user wants disabled */
 121         while (dcmds >> thiscmd)
 122         {
 123                 Commandtable::iterator cm = ServerInstance->Parser->cmdlist.find(thiscmd);
 124                 if (cm != ServerInstance->Parser->cmdlist.end())
 125                 {
 126                         cm->second->Disable(true);
 127                 }
 128         }
 129         return true;
 130 }
 131
 132 #ifdef WINDOWS
 133 // Note: the windows validator is in win32wrapper.cpp
 134 void FindDNS(std::string& server);
 135 #else
 136 static void FindDNS(std::string& server)
 137 {
 138         if (!server.empty())
 139                 return;
 140
 141         // attempt to look up their nameserver from /etc/resolv.conf
 142         ServerInstance->Logs->Log("CONFIG",DEFAULT,"WARNING: <dns:server> not defined, attempting to find working server in /etc/resolv.conf...");
 143
 144         std::ifstream resolv("/etc/resolv.conf");
 145
 146         while (resolv >> server)
 147         {
 148                 if (server == "nameserver")
 149                 {
 150                         resolv >> server;
 151                         ServerInstance->Logs->Log("CONFIG",DEFAULT,"<dns:server> set to '%s' as first resolver in /etc/resolv.conf.",server.c_str());
 152                         return;
 153                 }
 154         }
 155
 156         ServerInstance->Logs->Log("CONFIG",DEFAULT,"/etc/resolv.conf contains no viable nameserver entries! Defaulting to nameserver '127.0.0.1'!");
 157         server = "127.0.0.1";
 158 }
 159 #endif
 160
 161 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
 162 {
 163         ConfigTagList tags = conf->ConfTags(tag);
 164         for(ConfigIter i = tags.first; i != tags.second; ++i)
 165         {
 166                 ConfigTag* ctag = i->second;
 167                 std::string mask;
 168                 if (!ctag->readString(key, mask))
 169                         throw CoreException("<"+tag+":"+key+"> missing at " + ctag->getTagLocation());
 170                 std::string reason = ctag->getString("reason", "<Config>");
 171                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
 172                 if (!ServerInstance->XLines->AddLine(xl, NULL))
 173                         delete xl;
 174         }
 175 }
 176
 177 typedef std::map<std::string, ConfigTag*> LocalIndex;
 178 void ServerConfig::CrossCheckOperClassType()
 179 {
 180         LocalIndex operclass;
 181         ConfigTagList tags = ConfTags("class");
 182         for(ConfigIter i = tags.first; i != tags.second; ++i)
 183         {
 184                 ConfigTag* tag = i->second;
 185                 std::string name = tag->getString("name");
 186                 if (name.empty())
 187                         throw CoreException("<class:name> missing from tag at " + tag->getTagLocation());
 188                 if (operclass.find(name) != operclass.end())
 189                         throw CoreException("Duplicate class block with name " + name + " at " + tag->getTagLocation());
 190                 operclass[name] = tag;
 191         }
 192         tags = ConfTags("type");
 193         for(ConfigIter i = tags.first; i != tags.second; ++i)
 194         {
 195                 ConfigTag* tag = i->second;
 196                 std::string name = tag->getString("name");
 197                 if (name.empty())
 198                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
 199                 if (!ServerInstance->IsNick(name.c_str(), Limits.NickMax))
 200                         throw CoreException("<type:name> is invalid (value '" + name + "')");
 201                 if (oper_blocks.find(" " + name) != oper_blocks.end())
 202                         throw CoreException("Duplicate type block with name " + name + " at " + tag->getTagLocation());
 203
 204                 OperInfo* ifo = new OperInfo;
 205                 oper_blocks[" " + name] = ifo;
 206                 ifo->name = name;
 207                 ifo->type_block = tag;
 208
 209                 std::string classname;
 210                 irc::spacesepstream str(tag->getString("classes"));
 211                 while (str.GetToken(classname))
 212                 {
 213                         LocalIndex::iterator cls = operclass.find(classname);
 214                         if (cls == operclass.end())
 215                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 216                         ifo->class_blocks.push_back(cls->second);
 217                 }
 218         }
 219
 220         tags = ConfTags("oper");
 221         for(ConfigIter i = tags.first; i != tags.second; ++i)
 222         {
 223                 ConfigTag* tag = i->second;
 224
 225                 std::string name = tag->getString("name");
 226                 if (name.empty())
 227                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 228
 229                 std::string type = tag->getString("type");
 230                 OperIndex::iterator tblk = oper_blocks.find(" " + type);
 231                 if (tblk == oper_blocks.end())
 232                         throw CoreException("Oper block " + name + " has missing type " + type);
 233                 if (oper_blocks.find(name) != oper_blocks.end())
 234                         throw CoreException("Duplicate oper block with name " + name);
 235
 236                 OperInfo* ifo = new OperInfo;
 237                 ifo->name = type;
 238                 ifo->oper_block = tag;
 239                 ifo->type_block = tblk->second->type_block;
 240                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 241                 oper_blocks[name] = ifo;
 242         }
 243 }
 244
 245 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 246 {
 247         typedef std::map<std::string, ConnectClass*> ClassMap;
 248         ClassMap oldBlocksByMask;
 249         if (current)
 250         {
 251                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 252                 {
 253                         ConnectClass* c = *i;
 254                         if (c->name.substr(0, 8) != "unnamed-")
 255                         {
 256                                 oldBlocksByMask["n" + c->name] = c;
 257                         }
 258                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 259                         {
 260                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 261                                 typeMask += c->host;
 262                                 oldBlocksByMask[typeMask] = c;
 263                         }
 264                 }
 265         }
 266
 267         int blk_count = config_data.count("connect");
 268         if (blk_count == 0)
 269         {
 270                 // No connect blocks found; make a trivial default block
 271                 std::vector<KeyVal>* items;
 272                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 273                 items->push_back(std::make_pair("allow", "*"));
 274                 config_data.insert(std::make_pair("connect", tag));
 275                 blk_count = 1;
 276         }
 277
 278         Classes.resize(blk_count);
 279         std::map<std::string, int> names;
 280
 281         bool try_again = true;
 282         for(int tries=0; try_again; tries++)
 283         {
 284                 try_again = false;
 285                 ConfigTagList tags = ConfTags("connect");
 286                 int i=0;
 287                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 288                 {
 289                         ConfigTag* tag = it->second;
 290                         if (Classes[i])
 291                                 continue;
 292
 293                         ConnectClass* parent = NULL;
 294                         std::string parentName = tag->getString("parent");
 295                         if (!parentName.empty())
 296                         {
 297                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 298                                 if (parentIter == names.end())
 299                                 {
 300                                         try_again = true;
 301                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 302                                         if (tries >= blk_count)
 303                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 304                                         continue;
 305                                 }
 306                                 parent = Classes[parentIter->second];
 307                         }
 308
 309                         std::string name = tag->getString("name");
 310                         std::string mask, typeMask;
 311                         char type;
 312
 313                         if (tag->readString("allow", mask, false))
 314                         {
 315                                 type = CC_ALLOW;
 316                                 typeMask = 'a' + mask;
 317                         }
 318                         else if (tag->readString("deny", mask, false))
 319                         {
 320                                 type = CC_DENY;
 321                                 typeMask = 'd' + mask;
 322                         }
 323                         else if (!name.empty())
 324                         {
 325                                 type = CC_NAMED;
 326                                 mask = name;
 327                                 typeMask = 'n' + mask;
 328                         }
 329                         else
 330                         {
 331                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 332                         }
 333
 334                         if (name.empty())
 335                         {
 336                                 name = "unnamed-" + ConvToStr(i);
 337                         }
 338                         else
 339                         {
 340                                 typeMask = 'n' + name;
 341                         }
 342
 343                         if (names.find(name) != names.end())
 344                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 345                         names[name] = i;
 346
 347                         ConnectClass* me = parent ?
 348                                 new ConnectClass(tag, type, mask, *parent) :
 349                                 new ConnectClass(tag, type, mask);
 350
 351                         me->name = name;
 352
 353                         me->registration_timeout = tag->getInt("timeout", me->registration_timeout);
 354                         me->pingtime = tag->getInt("pingfreq", me->pingtime);
 355                         std::string sendq;
 356                         if (tag->readString("sendq", sendq))
 357                         {
 358                                 // attempt to guess a good hard/soft sendq from a single value
 359                                 long value = atol(sendq.c_str());
 360                                 if (value > 16384)
 361                                         me->softsendqmax = value / 16;
 362                                 else
 363                                         me->softsendqmax = value;
 364                                 me->hardsendqmax = value * 8;
 365                         }
 366                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 367                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 368                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 369                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 370                         me->commandrate = tag->getInt("commandrate", me->commandrate);
 371                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 372                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 373                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 374                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 375                         me->limit = tag->getInt("limit", me->limit);
 376
 377                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 378                         if (oldMask != oldBlocksByMask.end())
 379                         {
 380                                 ConnectClass* old = oldMask->second;
 381                                 oldBlocksByMask.erase(oldMask);
 382                                 old->Update(me);
 383                                 delete me;
 384                                 me = old;
 385                         }
 386                         Classes[i] = me;
 387                 }
 388         }
 389 }
 390
 391 /** Represents a deprecated configuration tag.
 392  */
 393 struct Deprecated
 394 {
 395         /** Tag name
 396          */
 397         const char* tag;
 398         /** Tag value
 399          */
 400         const char* value;
 401         /** Reason for deprecation
 402          */
 403         const char* reason;
 404 };
 405
 406 static const Deprecated ChangedConfig[] = {
 407         {"options", "hidelinks",                "has been moved to <security:hidelinks> as of 1.2a3"},
 408         {"options", "hidewhois",                "has been moved to <security:hidewhois> as of 1.2a3"},
 409         {"options", "userstats",                "has been moved to <security:userstats> as of 1.2a3"},
 410         {"options", "customversion",    "has been moved to <security:customversion> as of 1.2a3"},
 411         {"options", "hidesplits",               "has been moved to <security:hidesplits> as of 1.2a3"},
 412         {"options", "hidebans",         "has been moved to <security:hidebans> as of 1.2a3"},
 413         {"options", "hidekills",                "has been moved to <security:hidekills> as of 1.2a3"},
 414         {"options", "operspywhois",             "has been moved to <security:operspywhois> as of 1.2a3"},
 415         {"options", "announceinvites",  "has been moved to <security:announceinvites> as of 1.2a3"},
 416         {"options", "hidemodes",                "has been moved to <security:hidemodes> as of 1.2a3"},
 417         {"options", "maxtargets",               "has been moved to <security:maxtargets> as of 1.2a3"},
 418         {"options",     "nouserdns",            "has been moved to <performance:nouserdns> as of 1.2a3"},
 419         {"options",     "maxwho",               "has been moved to <performance:maxwho> as of 1.2a3"},
 420         {"options",     "softlimit",            "has been moved to <performance:softlimit> as of 1.2a3"},
 421         {"options", "somaxconn",                "has been moved to <performance:somaxconn> as of 1.2a3"},
 422         {"options", "netbuffersize",    "has been moved to <performance:netbuffersize> as of 1.2a3"},
 423         {"options", "maxwho",           "has been moved to <performance:maxwho> as of 1.2a3"},
 424         {"options",     "loglevel",             "1.2 does not use the loglevel value. Please define <log> tags instead."},
 425         {"die",     "value",            "you need to reread your config"},
 426 };
 427
 428 void ServerConfig::Fill()
 429 {
 430         ConfigTag* options = ConfValue("options");
 431         ConfigTag* security = ConfValue("security");
 432         if (sid.empty())
 433         {
 434                 ServerName = ConfValue("server")->getString("name");
 435                 sid = ConfValue("server")->getString("id");
 436                 ValidHost(ServerName, "<server:name>");
 437                 if (!sid.empty() && !ServerInstance->IsSID(sid))
 438                         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.");
 439         }
 440         else
 441         {
 442                 if (ServerName != ConfValue("server")->getString("name"))
 443                         throw CoreException("You must restart to change the server name or SID");
 444                 std::string nsid = ConfValue("server")->getString("id");
 445                 if (!nsid.empty() && nsid != sid)
 446                         throw CoreException("You must restart to change the server name or SID");
 447         }
 448         diepass = ConfValue("power")->getString("diepass");
 449         restartpass = ConfValue("power")->getString("restartpass");
 450         powerhash = ConfValue("power")->getString("hash");
 451         PrefixQuit = options->getString("prefixquit");
 452         SuffixQuit = options->getString("suffixquit");
 453         FixedQuit = options->getString("fixedquit");
 454         PrefixPart = options->getString("prefixpart");
 455         SuffixPart = options->getString("suffixpart");
 456         FixedPart = options->getString("fixedpart");
 457         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 458         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 459         MoronBanner = options->getString("moronbanner", "You're banned!");
 460         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 461         Network = ConfValue("server")->getString("network", "Network");
 462         AdminName = ConfValue("admin")->getString("name", "");
 463         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 464         AdminNick = ConfValue("admin")->getString("nick", "admin");
 465         ModPath = ConfValue("path")->getString("moduledir", MOD_PATH);
 466         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 467         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 468         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 469         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 470         UserStats = security->getString("userstats");
 471         CustomVersion = security->getString("customversion", Network + " IRCd");
 472         HideSplits = security->getBool("hidesplits");
 473         HideBans = security->getBool("hidebans");
 474         HideWhoisServer = security->getString("hidewhois");
 475         HideKillsServer = security->getString("hidekills");
 476         OperSpyWhois = security->getBool("operspywhois");
 477         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 478         GenericOper = security->getBool("genericoper");
 479         NoUserDns = ConfValue("performance")->getBool("nouserdns");
 480         SyntaxHints = options->getBool("syntaxhints");
 481         CycleHosts = options->getBool("cyclehosts");
 482         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 483         FullHostInTopic = options->getBool("hostintopic");
 484         MaxTargets = security->getInt("maxtargets", 20);
 485         DefaultModes = options->getString("defaultmodes", "nt");
 486         PID = ConfValue("pid")->getString("file");
 487         WhoWasGroupSize = ConfValue("whowas")->getInt("groupsize");
 488         WhoWasMaxGroups = ConfValue("whowas")->getInt("maxgroups");
 489         WhoWasMaxKeep = ServerInstance->Duration(ConfValue("whowas")->getString("maxkeep"));
 490         MaxChans = ConfValue("channels")->getInt("users", 20);
 491         OperMaxChans = ConfValue("channels")->getInt("opers", 60);
 492         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 493         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 494         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 495         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 496         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 497         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 498         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 499         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 500         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 501         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 502         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 503         InvBypassModes = options->getBool("invitebypassmodes", true);
 504
 505         range(SoftLimit, 10, ServerInstance->SE->GetMaxFds(), ServerInstance->SE->GetMaxFds(), "<performance:softlimit>");
 506         range(MaxConn, 0, SOMAXCONN, SOMAXCONN, "<performance:somaxconn>");
 507         range(MaxTargets, 1, 31, 20, "<security:maxtargets>");
 508         range(NetBufferSize, 1024, 65534, 10240, "<performance:netbuffersize>");
 509         range(WhoWasGroupSize, 0, 10000, 10, "<whowas:groupsize>");
 510         range(WhoWasMaxGroups, 0, 1000000, 10240, "<whowas:maxgroups>");
 511         range(WhoWasMaxKeep, 3600, INT_MAX, 3600, "<whowas:maxkeep>");
 512
 513         ValidIP(DNSServer, "<dns:server>");
 514
 515         std::string defbind = options->getString("defaultbind");
 516         if (assign(defbind) == "ipv4")
 517         {
 518                 WildcardIPv6 = false;
 519         }
 520         else if (assign(defbind) == "ipv6")
 521         {
 522                 WildcardIPv6 = true;
 523         }
 524         else
 525         {
 526                 WildcardIPv6 = true;
 527                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
 528                 if (socktest < 0)
 529                         WildcardIPv6 = false;
 530                 else
 531                         close(socktest);
 532         }
 533         ConfigTagList tags = ConfTags("uline");
 534         for(ConfigIter i = tags.first; i != tags.second; ++i)
 535         {
 536                 ConfigTag* tag = i->second;
 537                 std::string server;
 538                 if (!tag->readString("server", server))
 539                         throw CoreException("<uline> tag missing server at " + tag->getTagLocation());
 540                 ulines[assign(server)] = tag->getBool("silent");
 541         }
 542
 543         tags = ConfTags("banlist");
 544         for(ConfigIter i = tags.first; i != tags.second; ++i)
 545         {
 546                 ConfigTag* tag = i->second;
 547                 std::string chan;
 548                 if (!tag->readString("chan", chan))
 549                         throw CoreException("<banlist> tag missing chan at " + tag->getTagLocation());
 550                 maxbans[chan] = tag->getInt("limit");
 551         }
 552
 553         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 554         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 555         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 556         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 557
 558         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 559         for (const unsigned char* p = (const unsigned char*)ConfValue("disabled")->getString("usermodes").c_str(); *p; ++p)
 560         {
 561                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid usermode ")+(char)*p+" was found.");
 562                 DisabledUModes[*p - 'A'] = 1;
 563         }
 564
 565         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 566         for (const unsigned char* p = (const unsigned char*)ConfValue("disabled")->getString("chanmodes").c_str(); *p; ++p)
 567         {
 568                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid chanmode ")+(char)*p+" was found.");
 569                 DisabledCModes[*p - 'A'] = 1;
 570         }
 571
 572         memset(HideModeLists, 0, sizeof(HideModeLists));
 573         for (const unsigned char* p = (const unsigned char*)ConfValue("security")->getString("hidemodes").c_str(); *p; ++p)
 574                 HideModeLists[*p] = true;
 575
 576         std::string v = security->getString("announceinvites");
 577
 578         if (v == "ops")
 579                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 580         else if (v == "all")
 581                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 582         else if (v == "dynamic")
 583                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 584         else
 585                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 586
 587         Limits.Finalise();
 588 }
 589
 590 // WARNING: it is not safe to use most of the codebase in this function, as it
 591 // will run in the config reader thread
 592 void ServerConfig::Read()
 593 {
 594         /* Load and parse the config file, if there are any errors then explode */
 595
 596         ParseStack stack(this);
 597         try
 598         {
 599                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 600         }
 601         catch (CoreException& err)
 602         {
 603                 valid = false;
 604                 errstr << err.GetReason();
 605         }
 606         if (valid)
 607         {
 608                 DNSServer = ConfValue("dns")->getString("server");
 609                 FindDNS(DNSServer);
 610         }
 611 }
 612
 613 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 614 {
 615         valid = true;
 616         if (old)
 617         {
 618                 /*
 619                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 620                  */
 621                 this->ServerName = old->ServerName;
 622                 this->sid = old->sid;
 623                 this->cmdline = old->cmdline;
 624         }
 625
 626         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 627         try
 628         {
 629                 for (int Index = 0; Index * sizeof(Deprecated) < sizeof(ChangedConfig); Index++)
 630                 {
 631                         std::string dummy;
 632                         if (ConfValue(ChangedConfig[Index].tag)->readString(ChangedConfig[Index].value, dummy, true))
 633                                 errstr << "Your configuration contains a deprecated value: <"
 634                                         << ChangedConfig[Index].tag << ":" << ChangedConfig[Index].value << "> - " << ChangedConfig[Index].reason
 635                                         << " (at " << ConfValue(ChangedConfig[Index].tag)->getTagLocation() << ")\n";
 636                 }
 637
 638                 Fill();
 639
 640                 // Handle special items
 641                 CrossCheckOperClassType();
 642                 CrossCheckConnectBlocks(old);
 643         }
 644         catch (CoreException &ce)
 645         {
 646                 errstr << ce.GetReason();
 647         }
 648
 649         // write once here, to try it out and make sure its ok
 650         ServerInstance->WritePID(this->PID);
 651
 652         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 653         valid = errstr.str().empty();
 654
 655         if (old)
 656         {
 657                 // On first run, ports are bound later on
 658                 FailedPortList pl;
 659                 ServerInstance->BindPorts(pl);
 660                 if (pl.size())
 661                 {
 662                         errstr << "Not all your client ports could be bound.\nThe following port(s) failed to bind:\n";
 663
 664                         int j = 1;
 665                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 666                         {
 667                                 char buf[MAXBUF];
 668                                 snprintf(buf, MAXBUF, "%d.   Address: %s   Reason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 669                                 errstr << buf;
 670                         }
 671                 }
 672         }
 673
 674         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 675
 676         if (!valid)
 677                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "There were errors in your configuration file:");
 678
 679         while (errstr.good())
 680         {
 681                 std::string line;
 682                 getline(errstr, line, '\n');
 683                 if (!line.empty())
 684                 {
 685                         if (user)
 686                                 user->WriteServ("NOTICE %s :*** %s", user->nick.c_str(), line.c_str());
 687                         else
 688                                 ServerInstance->SNO->WriteGlobalSno('a', line);
 689                 }
 690
 691                 if (!old)
 692                 {
 693                         // Starting up, so print it out so it's seen. XXX this is a bit of a hack.
 694                         printf("%s\n", line.c_str());
 695                 }
 696         }
 697
 698         errstr.clear();
 699         errstr.str(std::string());
 700
 701         /* No old configuration -> initial boot, nothing more to do here */
 702         if (!old)
 703         {
 704                 if (!valid)
 705                 {
 706                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 707                 }
 708
 709                 return;
 710         }
 711
 712         // If there were errors processing configuration, don't touch modules.
 713         if (!valid)
 714                 return;
 715
 716         ApplyModules(user);
 717
 718         if (user)
 719                 user->WriteServ("NOTICE %s :*** Successfully rehashed server.", user->nick.c_str());
 720         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 721 }
 722
 723 void ServerConfig::ApplyModules(User* user)
 724 {
 725         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
 726         if (whowas)
 727                 WhowasRequest(NULL, whowas, WhowasRequest::WHOWAS_PRUNE).Send();
 728
 729         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
 730         std::vector<std::string> added_modules;
 731         std::set<std::string> removed_modules(v.begin(), v.end());
 732
 733         ConfigTagList tags = ConfTags("module");
 734         for(ConfigIter i = tags.first; i != tags.second; ++i)
 735         {
 736                 ConfigTag* tag = i->second;
 737                 std::string name;
 738                 if (tag->readString("name", name))
 739                 {
 740                         // if this module is already loaded, the erase will succeed, so we need do nothing
 741                         // otherwise, we need to add the module (which will be done later)
 742                         if (removed_modules.erase(name) == 0)
 743                                 added_modules.push_back(name);
 744                 }
 745         }
 746
 747         if (ConfValue("options")->getBool("allowhalfop") && removed_modules.erase("m_halfop.so") == 0)
 748                 added_modules.push_back("m_halfop.so");
 749
 750         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 751         {
 752                 // Don't remove cmd_*.so, just remove m_*.so
 753                 if (removing->c_str()[0] == 'c')
 754                         continue;
 755                 Module* m = ServerInstance->Modules->Find(*removing);
 756                 if (m && ServerInstance->Modules->Unload(m))
 757                 {
 758                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
 759
 760                         if (user)
 761                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
 762                         else
 763                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
 764                 }
 765                 else
 766                 {
 767                         if (user)
 768                                 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());
 769                         else
 770                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
 771                 }
 772         }
 773
 774         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 775         {
 776                 if (ServerInstance->Modules->Load(adding->c_str()))
 777                 {
 778                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 779                         if (user)
 780                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
 781                         else
 782                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 783                 }
 784                 else
 785                 {
 786                         if (user)
 787                                 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());
 788                         else
 789                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 790                 }
 791         }
 792 }
 793
 794 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
 795 {
 796         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
 797 }
 798
 799 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 800 {
 801         ConfigTagList found = config_data.equal_range(tag);
 802         if (found.first == found.second)
 803                 return NULL;
 804         ConfigTag* rv = found.first->second;
 805         found.first++;
 806         if (found.first != found.second)
 807                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
 808                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
 809         return rv;
 810 }
 811
 812 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 813 {
 814         return config_data.equal_range(tag);
 815 }
 816
 817 bool ServerConfig::FileExists(const char* file)
 818 {
 819         struct stat sb;
 820         if (stat(file, &sb) == -1)
 821                 return false;
 822
 823         if ((sb.st_mode & S_IFDIR) > 0)
 824                 return false;
 825
 826         FILE *input = fopen(file, "r");
 827         if (input == NULL)
 828                 return false;
 829         else
 830         {
 831                 fclose(input);
 832                 return true;
 833         }
 834 }
 835
 836 const char* ServerConfig::CleanFilename(const char* name)
 837 {
 838         const char* p = name + strlen(name);
 839         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
 840         return (p != name ? ++p : p);
 841 }
 842
 843 std::string ServerConfig::GetSID()
 844 {
 845         return sid;
 846 }
 847
 848 void ConfigReaderThread::Run()
 849 {
 850         Config->Read();
 851         done = true;
 852 }
 853
 854 void ConfigReaderThread::Finish()
 855 {
 856         ServerConfig* old = ServerInstance->Config;
 857         ServerInstance->Logs->Log("CONFIG",DEBUG,"Switching to new configuration...");
 858         ServerInstance->Logs->CloseLogs();
 859         ServerInstance->Config = this->Config;
 860         ServerInstance->Logs->OpenFileLogs();
 861         Config->Apply(old, TheUserUID);
 862
 863         if (Config->valid)
 864         {
 865                 /*
 866                  * Apply the changed configuration from the rehash.
 867                  *
 868                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 869                  * thoroughly!!!
 870                  */
 871                 ServerInstance->XLines->CheckELines();
 872                 ServerInstance->XLines->CheckELines();
 873                 ServerInstance->XLines->ApplyLines();
 874                 ServerInstance->Res->Rehash();
 875                 ServerInstance->ResetMaxBans();
 876                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 877                 User* user = ServerInstance->FindNick(TheUserUID);
 878                 FOREACH_MOD(I_OnRehash, OnRehash(user));
 879                 ServerInstance->BuildISupport();
 880
 881                 Config = old;
 882         }
 883         else
 884         {
 885                 // whoops, abort!
 886                 ServerInstance->Logs->CloseLogs();
 887                 ServerInstance->Config = old;
 888                 ServerInstance->Logs->OpenFileLogs();
 889         }
 890 }