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         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                 operclass[name] = tag;
 189         }
 190         tags = ConfTags("type");
 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("<type:name> is missing from tag at " + tag->getTagLocation());
 197
 198                 if (!ServerInstance->IsNick(name.c_str(), Limits.NickMax))
 199                         throw CoreException("<type:name> is invalid (value '" + name + "')");
 200
 201                 OperInfo* ifo = new OperInfo;
 202                 oper_blocks[" " + name] = ifo;
 203                 ifo->name = name;
 204                 ifo->type_block = tag;
 205
 206                 std::string classname;
 207                 irc::spacesepstream str(tag->getString("classes"));
 208                 while (str.GetToken(classname))
 209                 {
 210                         LocalIndex::iterator cls = operclass.find(classname);
 211                         if (cls == operclass.end())
 212                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 213                         ifo->class_blocks.push_back(cls->second);
 214                 }
 215         }
 216
 217         tags = ConfTags("oper");
 218         for(ConfigIter i = tags.first; i != tags.second; ++i)
 219         {
 220                 ConfigTag* tag = i->second;
 221
 222                 std::string name = tag->getString("name");
 223                 if (name.empty())
 224                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 225
 226                 std::string type = tag->getString("type");
 227                 OperIndex::iterator tblk = oper_blocks.find(" " + type);
 228                 if (tblk == oper_blocks.end())
 229                         throw CoreException("Oper block " + name + " has missing type " + type);
 230                 if (oper_blocks.find(name) != oper_blocks.end())
 231                         throw CoreException("Duplicate oper block with name " + name);
 232
 233                 OperInfo* ifo = new OperInfo;
 234                 ifo->name = type;
 235                 ifo->oper_block = tag;
 236                 ifo->type_block = tblk->second->type_block;
 237                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 238                 oper_blocks[name] = ifo;
 239         }
 240 }
 241
 242 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 243 {
 244         typedef std::map<std::string, ConnectClass*> ClassMap;
 245         ClassMap oldBlocksByMask;
 246         if (current)
 247         {
 248                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 249                 {
 250                         ConnectClass* c = *i;
 251                         if (c->name.substr(0, 8) != "unnamed-")
 252                         {
 253                                 oldBlocksByMask["n" + c->name] = c;
 254                         }
 255                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
 256                         {
 257                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 258                                 typeMask += c->host;
 259                                 oldBlocksByMask[typeMask] = c;
 260                         }
 261                 }
 262         }
 263
 264         int blk_count = config_data.count("connect");
 265         if (blk_count == 0)
 266         {
 267                 // No connect blocks found; make a trivial default block
 268                 std::vector<KeyVal>* items;
 269                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
 270                 items->push_back(std::make_pair("allow", "*"));
 271                 config_data.insert(std::make_pair("connect", tag));
 272                 blk_count = 1;
 273         }
 274
 275         Classes.resize(blk_count);
 276         std::map<std::string, int> names;
 277
 278         bool try_again = true;
 279         for(int tries=0; try_again; tries++)
 280         {
 281                 try_again = false;
 282                 ConfigTagList tags = ConfTags("connect");
 283                 int i=0;
 284                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
 285                 {
 286                         ConfigTag* tag = it->second;
 287                         if (Classes[i])
 288                                 continue;
 289
 290                         ConnectClass* parent = NULL;
 291                         std::string parentName = tag->getString("parent");
 292                         if (!parentName.empty())
 293                         {
 294                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 295                                 if (parentIter == names.end())
 296                                 {
 297                                         try_again = true;
 298                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 299                                         if (tries >= blk_count)
 300                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
 301                                         continue;
 302                                 }
 303                                 parent = Classes[parentIter->second];
 304                         }
 305
 306                         std::string name = tag->getString("name");
 307                         std::string mask, typeMask;
 308                         char type;
 309
 310                         if (tag->readString("allow", mask, false))
 311                         {
 312                                 type = CC_ALLOW;
 313                                 typeMask = 'a' + mask;
 314                         }
 315                         else if (tag->readString("deny", mask, false))
 316                         {
 317                                 type = CC_DENY;
 318                                 typeMask = 'd' + mask;
 319                         }
 320                         else if (!name.empty())
 321                         {
 322                                 type = CC_NAMED;
 323                                 mask = name;
 324                                 typeMask = 'n' + mask;
 325                         }
 326                         else
 327                         {
 328                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
 329                         }
 330
 331                         if (name.empty())
 332                         {
 333                                 name = "unnamed-" + ConvToStr(i);
 334                         }
 335                         else
 336                         {
 337                                 typeMask = 'n' + name;
 338                         }
 339
 340                         if (names.find(name) != names.end())
 341                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 342                         names[name] = i;
 343
 344                         ConnectClass* me = parent ?
 345                                 new ConnectClass(tag, type, mask, *parent) :
 346                                 new ConnectClass(tag, type, mask);
 347
 348                         me->name = name;
 349
 350                         me->registration_timeout = tag->getInt("timeout", me->registration_timeout);
 351                         me->pingtime = tag->getInt("pingfreq", me->pingtime);
 352                         std::string sendq;
 353                         if (tag->readString("sendq", sendq))
 354                         {
 355                                 // attempt to guess a good hard/soft sendq from a single value
 356                                 long value = atol(sendq.c_str());
 357                                 if (value > 16384)
 358                                         me->softsendqmax = value / 16;
 359                                 else
 360                                         me->softsendqmax = value;
 361                                 me->hardsendqmax = value * 8;
 362                         }
 363                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 364                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 365                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 366                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 367                         me->commandrate = tag->getInt("commandrate", me->commandrate);
 368                         me->fakelag = tag->getBool("fakelag", me->fakelag);
 369                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 370                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 371                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 372                         me->limit = tag->getInt("limit", me->limit);
 373
 374                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 375                         if (oldMask != oldBlocksByMask.end())
 376                         {
 377                                 ConnectClass* old = oldMask->second;
 378                                 oldBlocksByMask.erase(oldMask);
 379                                 old->Update(me);
 380                                 delete me;
 381                                 me = old;
 382                         }
 383                         Classes[i] = me;
 384                 }
 385         }
 386 }
 387
 388 /** Represents a deprecated configuration tag.
 389  */
 390 struct Deprecated
 391 {
 392         /** Tag name
 393          */
 394         const char* tag;
 395         /** Tag value
 396          */
 397         const char* value;
 398         /** Reason for deprecation
 399          */
 400         const char* reason;
 401 };
 402
 403 static const Deprecated ChangedConfig[] = {
 404         {"options", "hidelinks",                "has been moved to <security:hidelinks> as of 1.2a3"},
 405         {"options", "hidewhois",                "has been moved to <security:hidewhois> as of 1.2a3"},
 406         {"options", "userstats",                "has been moved to <security:userstats> as of 1.2a3"},
 407         {"options", "customversion",    "has been moved to <security:customversion> as of 1.2a3"},
 408         {"options", "hidesplits",               "has been moved to <security:hidesplits> as of 1.2a3"},
 409         {"options", "hidebans",         "has been moved to <security:hidebans> as of 1.2a3"},
 410         {"options", "hidekills",                "has been moved to <security:hidekills> as of 1.2a3"},
 411         {"options", "operspywhois",             "has been moved to <security:operspywhois> as of 1.2a3"},
 412         {"options", "announceinvites",  "has been moved to <security:announceinvites> as of 1.2a3"},
 413         {"options", "hidemodes",                "has been moved to <security:hidemodes> as of 1.2a3"},
 414         {"options", "maxtargets",               "has been moved to <security:maxtargets> as of 1.2a3"},
 415         {"options",     "nouserdns",            "has been moved to <performance:nouserdns> as of 1.2a3"},
 416         {"options",     "maxwho",               "has been moved to <performance:maxwho> as of 1.2a3"},
 417         {"options",     "softlimit",            "has been moved to <performance:softlimit> as of 1.2a3"},
 418         {"options", "somaxconn",                "has been moved to <performance:somaxconn> as of 1.2a3"},
 419         {"options", "netbuffersize",    "has been moved to <performance:netbuffersize> as of 1.2a3"},
 420         {"options", "maxwho",           "has been moved to <performance:maxwho> as of 1.2a3"},
 421         {"options",     "loglevel",             "1.2 does not use the loglevel value. Please define <log> tags instead."},
 422         {"die",     "value",            "you need to reread your config"},
 423 };
 424
 425 void ServerConfig::Fill()
 426 {
 427         ConfigTag* options = ConfValue("options");
 428         ConfigTag* security = ConfValue("security");
 429         diepass = ConfValue("power")->getString("diepass");
 430         restartpass = ConfValue("power")->getString("restartpass");
 431         powerhash = ConfValue("power")->getString("hash");
 432         PrefixQuit = options->getString("prefixquit");
 433         SuffixQuit = options->getString("suffixquit");
 434         FixedQuit = options->getString("fixedquit");
 435         PrefixPart = options->getString("prefixpart");
 436         SuffixPart = options->getString("suffixpart");
 437         FixedPart = options->getString("fixedpart");
 438         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 439         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 440         MoronBanner = options->getString("moronbanner", "You're banned!");
 441         ServerName = ConfValue("server")->getString("name");
 442         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 443         Network = ConfValue("server")->getString("network", "Network");
 444         sid = ConfValue("server")->getString("id", "");
 445         AdminName = ConfValue("admin")->getString("name", "");
 446         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 447         AdminNick = ConfValue("admin")->getString("nick", "admin");
 448         ModPath = ConfValue("path")->getString("moduledir", MOD_PATH);
 449         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 450         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 451         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 452         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 453         UserStats = security->getString("userstats");
 454         CustomVersion = security->getString("customversion", Network + " IRCd");
 455         HideSplits = security->getBool("hidesplits");
 456         HideBans = security->getBool("hidebans");
 457         HideWhoisServer = security->getString("hidewhois");
 458         HideKillsServer = security->getString("hidekills");
 459         OperSpyWhois = security->getBool("operspywhois");
 460         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 461         GenericOper = security->getBool("genericoper");
 462         NoUserDns = ConfValue("performance")->getBool("nouserdns");
 463         SyntaxHints = options->getBool("syntaxhints");
 464         CycleHosts = options->getBool("cyclehosts");
 465         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 466         FullHostInTopic = options->getBool("hostintopic");
 467         MaxTargets = security->getInt("maxtargets", 20);
 468         DefaultModes = options->getString("defaultmodes", "nt");
 469         PID = ConfValue("pid")->getString("file");
 470         WhoWasGroupSize = ConfValue("whowas")->getInt("groupsize");
 471         WhoWasMaxGroups = ConfValue("whowas")->getInt("maxgroups");
 472         WhoWasMaxKeep = ServerInstance->Duration(ConfValue("whowas")->getString("maxkeep"));
 473         MaxChans = ConfValue("channels")->getInt("users", 20);
 474         OperMaxChans = ConfValue("channels")->getInt("opers", 60);
 475         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone", 32);
 476         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone", 128);
 477         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 478         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 479         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 480         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 481         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 482         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 483         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 484         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 485         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 486         InvBypassModes = options->getBool("invitebypassmodes", true);
 487
 488         range(SoftLimit, 10, ServerInstance->SE->GetMaxFds(), ServerInstance->SE->GetMaxFds(), "<performance:softlimit>");
 489         range(MaxConn, 0, SOMAXCONN, SOMAXCONN, "<performance:somaxconn>");
 490         range(MaxTargets, 1, 31, 20, "<security:maxtargets>");
 491         range(NetBufferSize, 1024, 65534, 10240, "<performance:netbuffersize>");
 492         range(WhoWasGroupSize, 0, 10000, 10, "<whowas:groupsize>");
 493         range(WhoWasMaxGroups, 0, 1000000, 10240, "<whowas:maxgroups>");
 494         range(WhoWasMaxKeep, 3600, INT_MAX, 3600, "<whowas:maxkeep>");
 495
 496         ValidIP(DNSServer, "<dns:server>");
 497         ValidHost(ServerName, "<server:name>");
 498         if (!sid.empty() && !ServerInstance->IsSID(sid))
 499                 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.");
 500
 501         ConfigTagList tags = ConfTags("uline");
 502         for(ConfigIter i = tags.first; i != tags.second; ++i)
 503         {
 504                 ConfigTag* tag = i->second;
 505                 std::string server;
 506                 if (!tag->readString("server", server))
 507                         throw CoreException("<uline> tag missing server at " + tag->getTagLocation());
 508                 ulines[assign(server)] = tag->getBool("silent");
 509         }
 510
 511         tags = ConfTags("banlist");
 512         for(ConfigIter i = tags.first; i != tags.second; ++i)
 513         {
 514                 ConfigTag* tag = i->second;
 515                 std::string chan;
 516                 if (!tag->readString("chan", chan))
 517                         throw CoreException("<banlist> tag missing chan at " + tag->getTagLocation());
 518                 maxbans[chan] = tag->getInt("limit");
 519         }
 520
 521         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 522         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 523         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 524         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 525
 526         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 527         for (const unsigned char* p = (const unsigned char*)ConfValue("disabled")->getString("usermodes").c_str(); *p; ++p)
 528         {
 529                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid usermode ")+(char)*p+" was found.");
 530                 DisabledUModes[*p - 'A'] = 1;
 531         }
 532
 533         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 534         for (const unsigned char* p = (const unsigned char*)ConfValue("disabled")->getString("chanmodes").c_str(); *p; ++p)
 535         {
 536                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid chanmode ")+(char)*p+" was found.");
 537                 DisabledCModes[*p - 'A'] = 1;
 538         }
 539
 540         memset(HideModeLists, 0, sizeof(HideModeLists));
 541         for (const unsigned char* p = (const unsigned char*)ConfValue("security")->getString("hidemodes").c_str(); *p; ++p)
 542                 HideModeLists[*p] = true;
 543
 544         std::string v = security->getString("announceinvites");
 545
 546         if (v == "ops")
 547                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 548         else if (v == "all")
 549                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 550         else if (v == "dynamic")
 551                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 552         else
 553                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 554
 555         Limits.Finalise();
 556 }
 557
 558 // WARNING: it is not safe to use most of the codebase in this function, as it
 559 // will run in the config reader thread
 560 void ServerConfig::Read()
 561 {
 562         /* Load and parse the config file, if there are any errors then explode */
 563
 564         ParseStack stack(this);
 565         try
 566         {
 567                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 568         }
 569         catch (CoreException& err)
 570         {
 571                 valid = false;
 572                 errstr << err.GetReason();
 573         }
 574         if (valid)
 575         {
 576                 DNSServer = ConfValue("dns")->getString("server");
 577                 FindDNS(DNSServer);
 578         }
 579 }
 580
 581 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 582 {
 583         valid = true;
 584
 585         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 586         try
 587         {
 588                 for (int Index = 0; Index * sizeof(Deprecated) < sizeof(ChangedConfig); Index++)
 589                 {
 590                         std::string dummy;
 591                         if (ConfValue(ChangedConfig[Index].tag)->readString(ChangedConfig[Index].value, dummy, true))
 592                                 errstr << "Your configuration contains a deprecated value: <"
 593                                         << ChangedConfig[Index].tag << ":" << ChangedConfig[Index].value << "> - " << ChangedConfig[Index].reason
 594                                         << " (at " << ConfValue(ChangedConfig[Index].tag)->getTagLocation() << ")\n";
 595                 }
 596
 597                 Fill();
 598
 599                 // Handle special items
 600                 CrossCheckOperClassType();
 601                 CrossCheckConnectBlocks(old);
 602         }
 603         catch (CoreException &ce)
 604         {
 605                 errstr << ce.GetReason();
 606         }
 607
 608         // write once here, to try it out and make sure its ok
 609         ServerInstance->WritePID(this->PID);
 610
 611         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
 612         valid = errstr.str().empty();
 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         if (old)
 618         {
 619                 this->ServerName = old->ServerName;
 620                 this->sid = old->sid;
 621                 this->cmdline = old->cmdline;
 622
 623                 // Same for ports... they're bound later on first run.
 624                 FailedPortList pl;
 625                 ServerInstance->BindPorts(pl);
 626                 if (pl.size())
 627                 {
 628                         errstr << "Not all your client ports could be bound.\nThe following port(s) failed to bind:\n";
 629
 630                         int j = 1;
 631                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 632                         {
 633                                 char buf[MAXBUF];
 634                                 snprintf(buf, MAXBUF, "%d.   Address: %s   Reason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 635                                 errstr << buf;
 636                         }
 637                 }
 638         }
 639
 640         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 641
 642         if (!valid)
 643                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "There were errors in your configuration file:");
 644
 645         while (errstr.good())
 646         {
 647                 std::string line;
 648                 getline(errstr, line, '\n');
 649                 if (!line.empty())
 650                 {
 651                         if (user)
 652                                 user->WriteServ("NOTICE %s :*** %s", user->nick.c_str(), line.c_str());
 653                         else
 654                                 ServerInstance->SNO->WriteGlobalSno('a', line);
 655                 }
 656
 657                 if (!old)
 658                 {
 659                         // Starting up, so print it out so it's seen. XXX this is a bit of a hack.
 660                         printf("%s\n", line.c_str());
 661                 }
 662         }
 663
 664         errstr.clear();
 665         errstr.str(std::string());
 666
 667         /* No old configuration -> initial boot, nothing more to do here */
 668         if (!old)
 669         {
 670                 if (!valid)
 671                 {
 672                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 673                 }
 674
 675                 return;
 676         }
 677
 678         // If there were errors processing configuration, don't touch modules.
 679         if (!valid)
 680                 return;
 681
 682         ApplyModules(user);
 683
 684         if (user)
 685                 user->WriteServ("NOTICE %s :*** Successfully rehashed server.", user->nick.c_str());
 686         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 687 }
 688
 689 void ServerConfig::ApplyModules(User* user)
 690 {
 691         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
 692         if (whowas)
 693                 WhowasRequest(NULL, whowas, WhowasRequest::WHOWAS_PRUNE).Send();
 694
 695         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
 696         std::vector<std::string> added_modules;
 697         std::set<std::string> removed_modules(v.begin(), v.end());
 698
 699         ConfigTagList tags = ConfTags("module");
 700         for(ConfigIter i = tags.first; i != tags.second; ++i)
 701         {
 702                 ConfigTag* tag = i->second;
 703                 std::string name;
 704                 if (tag->readString("name", name))
 705                 {
 706                         // if this module is already loaded, the erase will succeed, so we need do nothing
 707                         // otherwise, we need to add the module (which will be done later)
 708                         if (removed_modules.erase(name) == 0)
 709                                 added_modules.push_back(name);
 710                 }
 711         }
 712
 713         if (ConfValue("options")->getBool("allowhalfop") && removed_modules.erase("m_halfop.so") == 0)
 714                 added_modules.push_back("m_halfop.so");
 715
 716         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 717         {
 718                 // Don't remove cmd_*.so, just remove m_*.so
 719                 if (removing->c_str()[0] == 'c')
 720                         continue;
 721                 Module* m = ServerInstance->Modules->Find(*removing);
 722                 if (m && ServerInstance->Modules->Unload(m))
 723                 {
 724                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
 725
 726                         if (user)
 727                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
 728                         else
 729                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
 730                 }
 731                 else
 732                 {
 733                         if (user)
 734                                 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());
 735                         else
 736                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
 737                 }
 738         }
 739
 740         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 741         {
 742                 if (ServerInstance->Modules->Load(adding->c_str()))
 743                 {
 744                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 745                         if (user)
 746                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
 747                         else
 748                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 749                 }
 750                 else
 751                 {
 752                         if (user)
 753                                 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());
 754                         else
 755                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 756                 }
 757         }
 758 }
 759
 760 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
 761 {
 762         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
 763 }
 764
 765 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
 766 {
 767         ConfigDataHash::iterator iter = config_data.find(tag);
 768         if (iter == config_data.end())
 769                 return NULL;
 770         return iter->second;
 771 }
 772
 773 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
 774 {
 775         return config_data.equal_range(tag);
 776 }
 777
 778 bool ServerConfig::FileExists(const char* file)
 779 {
 780         struct stat sb;
 781         if (stat(file, &sb) == -1)
 782                 return false;
 783
 784         if ((sb.st_mode & S_IFDIR) > 0)
 785                 return false;
 786
 787         FILE *input = fopen(file, "r");
 788         if (input == NULL)
 789                 return false;
 790         else
 791         {
 792                 fclose(input);
 793                 return true;
 794         }
 795 }
 796
 797 const char* ServerConfig::CleanFilename(const char* name)
 798 {
 799         const char* p = name + strlen(name);
 800         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
 801         return (p != name ? ++p : p);
 802 }
 803
 804 std::string ServerConfig::GetSID()
 805 {
 806         return sid;
 807 }
 808
 809 void ConfigReaderThread::Run()
 810 {
 811         Config->Read();
 812         done = true;
 813 }
 814
 815 void ConfigReaderThread::Finish()
 816 {
 817         ServerConfig* old = ServerInstance->Config;
 818         ServerInstance->Logs->Log("CONFIG",DEBUG,"Switching to new configuration...");
 819         ServerInstance->Logs->CloseLogs();
 820         ServerInstance->Config = this->Config;
 821         ServerInstance->Logs->OpenFileLogs();
 822         Config->Apply(old, TheUserUID);
 823
 824         if (Config->valid)
 825         {
 826                 /*
 827                  * Apply the changed configuration from the rehash.
 828                  *
 829                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
 830                  * thoroughly!!!
 831                  */
 832                 ServerInstance->XLines->CheckELines();
 833                 ServerInstance->XLines->CheckELines();
 834                 ServerInstance->XLines->ApplyLines();
 835                 ServerInstance->Res->Rehash();
 836                 ServerInstance->ResetMaxBans();
 837                 Config->ApplyDisabledCommands(Config->DisabledCommands);
 838                 User* user = ServerInstance->FindNick(TheUserUID);
 839                 FOREACH_MOD(I_OnRehash, OnRehash(user));
 840                 ServerInstance->BuildISupport();
 841
 842                 Config = old;
 843         }
 844         else
 845         {
 846                 // whoops, abort!
 847                 ServerInstance->Logs->CloseLogs();
 848                 ServerInstance->Config = old;
 849                 ServerInstance->Logs->OpenFileLogs();
 850         }
 851 }