src/configreader.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2009 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 /* $Core */
  15 /* $CopyInstall: conf/inspircd.quotes.example $(CONPATH) */
  16 /* $CopyInstall: conf/inspircd.rules.example $(CONPATH) */
  17 /* $CopyInstall: conf/inspircd.motd.example $(CONPATH) */
  18 /* $CopyInstall: conf/inspircd.helpop-full.example $(CONPATH) */
  19 /* $CopyInstall: conf/inspircd.helpop.example $(CONPATH) */
  20 /* $CopyInstall: conf/inspircd.censor.example $(CONPATH) */
  21 /* $CopyInstall: conf/inspircd.filter.example $(CONPATH) */
  22 /* $CopyInstall: conf/inspircd.conf.example $(CONPATH) */
  23 /* $CopyInstall: conf/modules.conf.example $(CONPATH) */
  24 /* $CopyInstall: conf/opers.conf.example $(CONPATH) */
  25 /* $CopyInstall: conf/links.conf.example $(CONPATH) */
  26 /* $CopyInstall: .gdbargs $(BASE) */
  27
  28 #include "inspircd.h"
  29 #include <fstream>
  30 #include "xline.h"
  31 #include "exitcodes.h"
  32 #include "commands/cmd_whowas.h"
  33 #include "modes/cmode_h.h"
  34
  35 static void ReqRead(ServerConfig* src, const std::string& tag, const std::string& key, std::string& dest)
  36 {
  37         ConfigTag* t = src->ConfValue(tag);
  38         if (!t || !t->readString(key, dest))
  39                 throw CoreException("You must specify a value for <" + tag + ":" + key + ">");
  40 }
  41
  42 /** Represents a deprecated configuration tag.
  43  */
  44 struct Deprecated
  45 {
  46         /** Tag name
  47          */
  48         const char* tag;
  49         /** Tag value
  50          */
  51         const char* value;
  52         /** Reason for deprecation
  53          */
  54         const char* reason;
  55 };
  56
  57 ServerConfig::ServerConfig()
  58 {
  59         WhoWasGroupSize = WhoWasMaxGroups = WhoWasMaxKeep = 0;
  60         log_file = NULL;
  61         NoUserDns = forcedebug = OperSpyWhois = nofork = HideBans = HideSplits = UndernetMsgPrefix = false;
  62         CycleHosts = writelog = AllowHalfop = InvBypassModes = true;
  63         dns_timeout = DieDelay = 5;
  64         MaxTargets = 20;
  65         NetBufferSize = 10240;
  66         SoftLimit = ServerInstance->SE->GetMaxFds();
  67         MaxConn = SOMAXCONN;
  68         MaxWhoResults = 0;
  69         debugging = 0;
  70         MaxChans = 20;
  71         OperMaxChans = 30;
  72         c_ipv4_range = 32;
  73         c_ipv6_range = 128;
  74 }
  75
  76 void ServerConfig::Update005()
  77 {
  78         std::stringstream out(data005);
  79         std::string token;
  80         std::string line5;
  81         int token_counter = 0;
  82         isupport.clear();
  83         while (out >> token)
  84         {
  85                 line5 = line5 + token + " ";
  86                 token_counter++;
  87                 if (token_counter >= 13)
  88                 {
  89                         char buf[MAXBUF];
  90                         snprintf(buf, MAXBUF, "%s:are supported by this server", line5.c_str());
  91                         isupport.push_back(buf);
  92                         line5.clear();
  93                         token_counter = 0;
  94                 }
  95         }
  96         if (!line5.empty())
  97         {
  98                 char buf[MAXBUF];
  99                 snprintf(buf, MAXBUF, "%s:are supported by this server", line5.c_str());
 100                 isupport.push_back(buf);
 101         }
 102 }
 103
 104 void ServerConfig::Send005(User* user)
 105 {
 106         for (std::vector<std::string>::iterator line = ServerInstance->Config->isupport.begin(); line != ServerInstance->Config->isupport.end(); line++)
 107                 user->WriteNumeric(RPL_ISUPPORT, "%s %s", user->nick.c_str(), line->c_str());
 108 }
 109
 110 template<typename T, typename V>
 111 static void range(T& value, V min, V max, V def, const char* msg)
 112 {
 113         if (value >= (T)min && value <= (T)max)
 114                 return;
 115         ServerInstance->Logs->Log("CONFIG", DEFAULT,
 116                 "WARNING: %s value of %ld is not between %ld and %ld; set to %ld.",
 117                 msg, (long)value, (long)min, (long)max, (long)def);
 118         value = def;
 119 }
 120
 121 bool ServerConfig::CheckOnce(const char* tag)
 122 {
 123         if (!ConfValue(tag))
 124                 throw CoreException("You have not defined a <"+std::string(tag)+"> tag, this is required.");
 125         if (ConfValue(tag, 1))
 126                 throw CoreException("You have more than one <"+std::string(tag)+"> tag, this is not permitted.");
 127         return true;
 128 }
 129
 130 /* NOTE: Before anyone asks why we're not using inet_pton for this, it is because inet_pton and friends do not return so much detail,
 131  * even in strerror(errno). They just return 'yes' or 'no' to an address without such detail as to whats WRONG with the address.
 132  * Because ircd users arent as technical as they used to be (;)) we are going to give more of a useful error message.
 133  */
 134 static void ValidIP(const std::string& ip, const std::string& key)
 135 {
 136         const char* p = ip.c_str();
 137         int num_dots = 0;
 138         int num_seps = 0;
 139         int not_numbers = false;
 140         int not_hex = false;
 141
 142         if (*p)
 143         {
 144                 if (*p == '.')
 145                         throw CoreException("The value of "+key+" is not an IP address");
 146
 147                 for (const char* ptr = p; *ptr; ++ptr)
 148                 {
 149                         if (*ptr != ':' && *ptr != '.')
 150                         {
 151                                 if (*ptr < '0' || *ptr > '9')
 152                                         not_numbers = true;
 153                                 if ((*ptr < '0' || *ptr > '9') && (toupper(*ptr) < 'A' || toupper(*ptr) > 'F'))
 154                                         not_hex = true;
 155                         }
 156                         switch (*ptr)
 157                         {
 158                                 case ' ':
 159                                         throw CoreException("The value of "+key+" is not an IP address");
 160                                 case '.':
 161                                         num_dots++;
 162                                 break;
 163                                 case ':':
 164                                         num_seps++;
 165                                 break;
 166                         }
 167                 }
 168
 169                 if (num_dots > 3)
 170                         throw CoreException("The value of "+key+" is an IPv4 address with too many fields!");
 171
 172                 if (num_seps > 8)
 173                         throw CoreException("The value of "+key+" is an IPv6 address with too many fields!");
 174
 175                 if (num_seps == 0 && num_dots < 3)
 176                         throw CoreException("The value of "+key+" looks to be a malformed IPv4 address");
 177
 178                 if (num_seps == 0 && num_dots == 3 && not_numbers)
 179                         throw CoreException("The value of "+key+" contains non-numeric characters in an IPv4 address");
 180
 181                 if (num_seps != 0 && not_hex)
 182                         throw CoreException("The value of "+key+" contains non-hexdecimal characters in an IPv6 address");
 183
 184                 if (num_seps != 0 && num_dots != 3 && num_dots != 0)
 185                         throw CoreException("The value of "+key+" is a malformed IPv6 4in6 address");
 186         }
 187 }
 188
 189 static void ValidHost(const std::string& p, const std::string& msg)
 190 {
 191         int num_dots = 0;
 192         if (p.empty() || p[0] == '.')
 193                 throw CoreException("The value of "+msg+" is not a valid hostname");
 194         for (unsigned int i=0;i < p.length();i++)
 195         {
 196                 switch (p[i])
 197                 {
 198                         case ' ':
 199                                 throw CoreException("The value of "+msg+" is not a valid hostname");
 200                         case '.':
 201                                 num_dots++;
 202                         break;
 203                 }
 204         }
 205         if (num_dots == 0)
 206                 throw CoreException("The value of "+msg+" is not a valid hostname");
 207 }
 208
 209 // Specialized validators
 210
 211 bool ServerConfig::ApplyDisabledCommands(const std::string& data)
 212 {
 213         std::stringstream dcmds(data);
 214         std::string thiscmd;
 215
 216         /* Enable everything first */
 217         for (Commandtable::iterator x = ServerInstance->Parser->cmdlist.begin(); x != ServerInstance->Parser->cmdlist.end(); x++)
 218                 x->second->Disable(false);
 219
 220         /* Now disable all the ones which the user wants disabled */
 221         while (dcmds >> thiscmd)
 222         {
 223                 Commandtable::iterator cm = ServerInstance->Parser->cmdlist.find(thiscmd);
 224                 if (cm != ServerInstance->Parser->cmdlist.end())
 225                 {
 226                         cm->second->Disable(true);
 227                 }
 228         }
 229         return true;
 230 }
 231
 232 #ifdef WINDOWS
 233 // Note: the windows validator is in win32wrapper.cpp
 234 void ValidateDnsServer(std::string& server);
 235 #else
 236 static void ValidateDnsServer(std::string& server)
 237 {
 238         if (!server.empty())
 239         {
 240                 ValidIP(server, "<dns:server>");
 241                 return;
 242         }
 243
 244         // attempt to look up their nameserver from /etc/resolv.conf
 245         ServerInstance->Logs->Log("CONFIG",DEFAULT,"WARNING: <dns:server> not defined, attempting to find working server in /etc/resolv.conf...");
 246
 247         std::ifstream resolv("/etc/resolv.conf");
 248
 249         while (resolv >> server)
 250         {
 251                 if (server == "nameserver")
 252                 {
 253                         resolv >> server;
 254                         ServerInstance->Logs->Log("CONFIG",DEFAULT,"<dns:server> set to '%s' as first resolver in /etc/resolv.conf.",server.c_str());
 255                         return;
 256                 }
 257         }
 258
 259         ServerInstance->Logs->Log("CONFIG",DEFAULT,"/etc/resolv.conf contains no viable nameserver entries! Defaulting to nameserver '127.0.0.1'!");
 260         server = "127.0.0.1";
 261 }
 262 #endif
 263
 264 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
 265 {
 266         for(int i=0;; ++i)
 267         {
 268                 ConfigTag* ctag = conf->ConfValue(tag, i);
 269                 if (!ctag)
 270                         break;
 271                 std::string mask;
 272                 if (!ctag->readString(key, mask))
 273                         throw CoreException("<"+tag+":"+key+"> missing");
 274                 std::string reason = ctag->getString("reason", "<Config>");
 275                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
 276                 if (!ServerInstance->XLines->AddLine(xl, NULL))
 277                         delete xl;
 278         }
 279 }
 280
 281 void ServerConfig::CrossCheckOperClassType()
 282 {
 283         for (int i = 0;; ++i)
 284         {
 285                 ConfigTag* tag = ConfValue("class", i);
 286                 if (!tag)
 287                         break;
 288                 std::string name = tag->getString("name");
 289                 if (name.empty())
 290                         throw CoreException("<class:name> is required for all <class> tags");
 291                 operclass[name] = tag;
 292         }
 293         for (int i = 0;; ++i)
 294         {
 295                 ConfigTag* tag = ConfValue("type", i);
 296                 if (!tag)
 297                         break;
 298
 299                 std::string name = tag->getString("name");
 300                 if (name.empty())
 301                         throw CoreException("<type:name> is required for all <type> tags");
 302                 opertypes[name] = tag;
 303
 304                 std::string classname;
 305                 irc::spacesepstream str(tag->getString("classes"));
 306                 while (str.GetToken(classname))
 307                 {
 308                         if (operclass.find(classname) == operclass.end())
 309                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 310                 }
 311         }
 312 }
 313
 314 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 315 {
 316         typedef std::map<std::string, ConnectClass*> ClassMap;
 317         ClassMap oldBlocksByMask;
 318         if (current)
 319         {
 320                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 321                 {
 322                         ConnectClass* c = *i;
 323                         std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 324                         typeMask += c->host;
 325                         oldBlocksByMask[typeMask] = c;
 326                 }
 327         }
 328
 329         ClassMap newBlocksByMask;
 330         std::map<std::string, int> names;
 331
 332         bool try_again = true;
 333         for(int tries=0; try_again; tries++)
 334         {
 335                 try_again = false;
 336                 for(unsigned int i=0;; i++)
 337                 {
 338                         ConfigTag* tag = ConfValue("connect", i);
 339                         if (!tag)
 340                                 break;
 341                         if (Classes.size() <= i)
 342                                 Classes.resize(i+1);
 343                         if (Classes[i])
 344                                 continue;
 345
 346                         ConnectClass* parent = NULL;
 347                         std::string parentName = tag->getString("parent");
 348                         if (!parentName.empty())
 349                         {
 350                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 351                                 if (parentIter == names.end())
 352                                 {
 353                                         try_again = true;
 354                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 355                                         if (tries == 50)
 356                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block " + ConvToStr(i));
 357                                         continue;
 358                                 }
 359                                 parent = Classes[parentIter->second];
 360                         }
 361
 362                         std::string name = tag->getString("name");
 363                         if (!name.empty())
 364                         {
 365                                 if (names.find(name) != names.end())
 366                                         throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 367                                 names[name] = i;
 368                         }
 369
 370                         std::string mask, typeMask;
 371                         char type;
 372
 373                         if (tag->readString("allow", mask, false))
 374                         {
 375                                 type = CC_ALLOW;
 376                                 typeMask = 'a' + mask;
 377                         }
 378                         else if (tag->readString("deny", mask, false))
 379                         {
 380                                 type = CC_DENY;
 381                                 typeMask = 'd' + mask;
 382                         }
 383                         else
 384                         {
 385                                 throw CoreException("Connect class must have an allow or deny mask (#" + ConvToStr(i) + ")");
 386                         }
 387                         ClassMap::iterator dupMask = newBlocksByMask.find(typeMask);
 388                         if (dupMask != newBlocksByMask.end())
 389                                 throw CoreException("Two connect classes cannot have the same mask (" + mask + ")");
 390
 391                         ConnectClass* me = parent ?
 392                                 new ConnectClass(type, mask, *parent) :
 393                                 new ConnectClass(type, mask);
 394
 395                         if (!name.empty())
 396                                 me->name = name;
 397
 398                         tag->readString("password", me->pass);
 399                         tag->readString("hash", me->hash);
 400                         me->registration_timeout = tag->getInt("timeout", me->registration_timeout);
 401                         me->pingtime = tag->getInt("pingfreq", me->pingtime);
 402                         std::string sendq;
 403                         if (tag->readString("sendq", sendq))
 404                         {
 405                                 // attempt to guess a good hard/soft sendq from a single value
 406                                 long value = atol(sendq.c_str());
 407                                 if (value > 16384)
 408                                         me->softsendqmax = value / 16;
 409                                 else
 410                                         me->softsendqmax = value;
 411                                 me->hardsendqmax = value * 8;
 412                         }
 413                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 414                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 415                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 416                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 417                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 418                         me->port = tag->getInt("port", me->port);
 419                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 420                         me->limit = tag->getInt("limit", me->limit);
 421
 422                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 423                         if (oldMask != oldBlocksByMask.end())
 424                         {
 425                                 ConnectClass* old = oldMask->second;
 426                                 oldBlocksByMask.erase(oldMask);
 427                                 old->Update(me);
 428                                 delete me;
 429                                 me = old;
 430                         }
 431                         newBlocksByMask[typeMask] = me;
 432                         Classes[i] = me;
 433                 }
 434         }
 435 }
 436
 437 static const Deprecated ChangedConfig[] = {
 438         {"options", "hidelinks",                "has been moved to <security:hidelinks> as of 1.2a3"},
 439         {"options", "hidewhois",                "has been moved to <security:hidewhois> as of 1.2a3"},
 440         {"options", "userstats",                "has been moved to <security:userstats> as of 1.2a3"},
 441         {"options", "customversion",    "has been moved to <security:customversion> as of 1.2a3"},
 442         {"options", "hidesplits",               "has been moved to <security:hidesplits> as of 1.2a3"},
 443         {"options", "hidebans",         "has been moved to <security:hidebans> as of 1.2a3"},
 444         {"options", "hidekills",                "has been moved to <security:hidekills> as of 1.2a3"},
 445         {"options", "operspywhois",             "has been moved to <security:operspywhois> as of 1.2a3"},
 446         {"options", "announceinvites",  "has been moved to <security:announceinvites> as of 1.2a3"},
 447         {"options", "hidemodes",                "has been moved to <security:hidemodes> as of 1.2a3"},
 448         {"options", "maxtargets",               "has been moved to <security:maxtargets> as of 1.2a3"},
 449         {"options",     "nouserdns",            "has been moved to <performance:nouserdns> as of 1.2a3"},
 450         {"options",     "maxwho",               "has been moved to <performance:maxwho> as of 1.2a3"},
 451         {"options",     "softlimit",            "has been moved to <performance:softlimit> as of 1.2a3"},
 452         {"options", "somaxconn",                "has been moved to <performance:somaxconn> as of 1.2a3"},
 453         {"options", "netbuffersize",    "has been moved to <performance:netbuffersize> as of 1.2a3"},
 454         {"options", "maxwho",           "has been moved to <performance:maxwho> as of 1.2a3"},
 455         {"options",     "loglevel",             "1.2 does not use the loglevel value. Please define <log> tags instead."},
 456         {"die",     "value",            "has always been deprecated"},
 457 };
 458
 459 void ServerConfig::Fill()
 460 {
 461         ReqRead(this, "server", "name", ServerName);
 462         ReqRead(this, "power", "diepass", diepass);
 463         ReqRead(this, "power", "restartpass", restartpass);
 464
 465         ConfigTag* options = ConfValue("options");
 466         ConfigTag* security = ConfValue("security");
 467         powerhash = ConfValue("power")->getString("hash");
 468         DieDelay = ConfValue("power")->getInt("pause");
 469         PrefixQuit = options->getString("prefixquit");
 470         SuffixQuit = options->getString("suffixquit");
 471         FixedQuit = options->getString("fixedquit");
 472         PrefixPart = options->getString("prefixpart");
 473         SuffixPart = options->getString("suffixpart");
 474         FixedPart = options->getString("fixedpart");
 475         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 476         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 477         MoronBanner = options->getString("moronbanner", "You're banned!");
 478         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 479         Network = ConfValue("server")->getString("network", "Network");
 480         sid = ConfValue("server")->getString("id", "");
 481         AdminName = ConfValue("admin")->getString("name", "");
 482         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 483         AdminNick = ConfValue("admin")->getString("nick", "admin");
 484         ModPath = options->getString("moduledir", MOD_PATH);
 485         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 486         MaxWhoResults = ConfValue("performance")->getInt("maxwho", 1024);
 487         DNSServer = ConfValue("dns")->getString("server");
 488         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 489         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 490         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 491         SetUser = security->getString("runasuser");
 492         SetGroup = security->getString("runasgroup");
 493         UserStats = security->getString("userstats");
 494         CustomVersion = security->getString("customversion");
 495         HideSplits = security->getBool("hidesplits");
 496         HideBans = security->getBool("hidebans");
 497         HideWhoisServer = security->getString("hidewhois");
 498         HideKillsServer = security->getString("hidekills");
 499         OperSpyWhois = security->getBool("operspywhois");
 500         RestrictBannedUsers = security->getBool("restrictbannedusers");
 501         GenericOper = security->getBool("genericoper");
 502         NoUserDns = ConfValue("performance")->getBool("nouserdns");
 503         SyntaxHints = options->getBool("syntaxhints");
 504         CycleHosts = options->getBool("cyclehosts");
 505         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 506         FullHostInTopic = options->getBool("hostintopic");
 507         MaxTargets = security->getInt("maxtargets");
 508         DefaultModes = options->getString("defaultmodes");
 509         PID = ConfValue("pid")->getString("file");
 510         WhoWasGroupSize = ConfValue("whowas")->getInt("groupsize");
 511         WhoWasMaxGroups = ConfValue("whowas")->getInt("maxgroups");
 512         WhoWasMaxKeep = ServerInstance->Duration(ConfValue("whowas")->getString("maxkeep"));
 513         DieValue = ConfValue("die")->getString("value");
 514         MaxChans = ConfValue("channels")->getInt("users");
 515         OperMaxChans = ConfValue("channels")->getInt("opers");
 516         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone");
 517         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone");
 518         Limits.NickMax = ConfValue("limits")->getInt("maxnick");
 519         Limits.ChanMax = ConfValue("limits")->getInt("maxchan");
 520         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes");
 521         Limits.IdentMax = ConfValue("limits")->getInt("maxident");
 522         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit");
 523         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic");
 524         Limits.MaxKick = ConfValue("limits")->getInt("maxkick");
 525         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos");
 526         Limits.MaxAway = ConfValue("limits")->getInt("maxaway");
 527         InvBypassModes = options->getBool("invitebypassmodes");
 528
 529         ReadFile(MOTD, ConfValue("files")->getString("motd"));
 530         ReadFile(RULES, ConfValue("files")->getString("rules"));
 531         ValidateDnsServer(DNSServer);
 532
 533         range(SoftLimit, 10, ServerInstance->SE->GetMaxFds(), ServerInstance->SE->GetMaxFds(), "<performance:softlimit>");
 534         range(MaxConn, 0, SOMAXCONN, SOMAXCONN, "<performance:somaxconn>");
 535         range(MaxTargets, 1, 31, 20, "<security:maxtargets>");
 536         range(NetBufferSize, 1024, 65534, 10240, "<performance:netbuffersize>");
 537         range(MaxWhoResults, 1, 65535, 1024, "<performace:maxwho>");
 538         range(WhoWasGroupSize, 0, 10000, 10, "<whowas:groupsize>");
 539         range(WhoWasMaxGroups, 0, 1000000, 10240, "<whowas:maxgroups>");
 540         range(WhoWasMaxKeep, 3600, INT_MAX, 3600, "<whowas:maxkeep>");
 541
 542         ValidHost(ServerName, "<server:name>");
 543         if (!sid.empty() && !ServerInstance->IsSID(sid))
 544                 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.");
 545
 546         for (int i = 0;; ++i)
 547         {
 548                 ConfigTag* tag = ConfValue("uline", i);
 549                 if (!tag)
 550                         break;
 551                 std::string server;
 552                 if (!tag->readString("server", server))
 553                         throw CoreException("<uline> tag missing server");
 554                 ulines[assign(server)] = tag->getBool("silent");
 555         }
 556
 557         for(int i=0;; ++i)
 558         {
 559                 ConfigTag* tag = ConfValue("banlist", i);
 560                 if (!tag)
 561                         break;
 562                 std::string chan;
 563                 if (!tag->readString("chan", chan))
 564                         throw CoreException("<banlist> tag missing chan");
 565                 maxbans[chan] = tag->getInt("limit");
 566         }
 567
 568         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 569         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 570         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 571         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 572
 573         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 574         for (const unsigned char* p = (const unsigned char*)ConfValue("disabled")->getString("usermodes").c_str(); *p; ++p)
 575         {
 576                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid usermode ")+(char)*p+" was found.");
 577                 DisabledUModes[*p - 'A'] = 1;
 578         }
 579
 580         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 581         for (const unsigned char* p = (const unsigned char*)ConfValue("disabled")->getString("chanmodes").c_str(); *p; ++p)
 582         {
 583                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid chanmode ")+(char)*p+" was found.");
 584                 DisabledCModes[*p - 'A'] = 1;
 585         }
 586
 587         memset(HideModeLists, 0, sizeof(HideModeLists));
 588         for (const unsigned char* p = (const unsigned char*)ConfValue("security")->getString("hidemodes").c_str(); *p; ++p)
 589                 HideModeLists[*p] = true;
 590
 591         std::string v = security->getString("announceinvites");
 592
 593         if (v == "ops")
 594                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 595         else if (v == "all")
 596                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 597         else if (v == "dynamic")
 598                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 599         else
 600                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 601
 602         bool AllowHalfOp = options->getBool("allowhalfop");
 603         ModeHandler* mh = ServerInstance->Modes->FindMode('h', MODETYPE_CHANNEL);
 604         if (AllowHalfOp && !mh) {
 605                 ServerInstance->Logs->Log("CONFIG", DEFAULT, "Enabling halfop mode.");
 606                 mh = new ModeChannelHalfOp;
 607                 ServerInstance->Modes->AddMode(mh);
 608         } else if (!AllowHalfOp && mh) {
 609                 ServerInstance->Logs->Log("CONFIG", DEFAULT, "Disabling halfop mode.");
 610                 ServerInstance->Modes->DelMode(mh);
 611                 delete mh;
 612         }
 613
 614         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
 615         if (whowas)
 616                 WhowasRequest(NULL, whowas, WhowasRequest::WHOWAS_PRUNE).Send();
 617         Limits.Finalise();
 618
 619 }
 620
 621 /* These tags MUST occur and must ONLY occur once in the config file */
 622 static const char* const Once[] = { "server", "admin", "files", "power", "options" };
 623
 624 // WARNING: it is not safe to use most of the codebase in this function, as it
 625 // will run in the config reader thread
 626 void ServerConfig::Read()
 627 {
 628         /* Load and parse the config file, if there are any errors then explode */
 629
 630         if (!this->DoInclude(ServerInstance->ConfigFileName, true))
 631         {
 632                 valid = false;
 633                 return;
 634         }
 635 }
 636
 637 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 638 {
 639         valid = true;
 640         /* std::ostringstream::clear() does not clear the string itself, only the error flags. */
 641         errstr.clear();
 642         errstr.str().clear();
 643         include_stack.clear();
 644
 645         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 646         try
 647         {
 648                 /* Check we dont have more than one of singular tags, or any of them missing
 649                  */
 650                 for (int Index = 0; Index * sizeof(*Once) < sizeof(Once); Index++)
 651                         CheckOnce(Once[Index]);
 652
 653                 for (int Index = 0; Index * sizeof(Deprecated) < sizeof(ChangedConfig); Index++)
 654                 {
 655                         std::string dummy;
 656                         if (ConfValue(ChangedConfig[Index].tag)->readString(ChangedConfig[Index].value, dummy, true))
 657                                 throw CoreException(std::string("Your configuration contains a deprecated value: <") + ChangedConfig[Index].tag + ":" + ChangedConfig[Index].value + "> - " + ChangedConfig[Index].reason);
 658                 }
 659
 660                 Fill();
 661
 662                 // Handle special items
 663                 CrossCheckOperClassType();
 664                 CrossCheckConnectBlocks(old);
 665         }
 666         catch (CoreException &ce)
 667         {
 668                 errstr << ce.GetReason();
 669                 valid = false;
 670         }
 671
 672         // write once here, to try it out and make sure its ok
 673         ServerInstance->WritePID(this->PID);
 674
 675         /*
 676          * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 677          */
 678         if (old)
 679         {
 680                 this->ServerName = old->ServerName;
 681                 this->sid = old->sid;
 682                 this->argv = old->argv;
 683                 this->argc = old->argc;
 684
 685                 // Same for ports... they're bound later on first run.
 686                 FailedPortList pl;
 687                 ServerInstance->BindPorts(pl);
 688                 if (pl.size())
 689                 {
 690                         errstr << "Not all your client ports could be bound.\nThe following port(s) failed to bind:\n";
 691
 692                         int j = 1;
 693                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 694                         {
 695                                 char buf[MAXBUF];
 696                                 snprintf(buf, MAXBUF, "%d.   Address: %s   Reason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 697                                 errstr << buf;
 698                         }
 699                 }
 700         }
 701
 702         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 703
 704         valid = errstr.str().empty();
 705         if (!valid)
 706                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "There were errors in your configuration file:");
 707
 708         while (errstr.good())
 709         {
 710                 std::string line;
 711                 getline(errstr, line, '\n');
 712                 if (!line.empty())
 713                 {
 714                         if (user)
 715                                 user->WriteServ("NOTICE %s :*** %s", user->nick.c_str(), line.c_str());
 716                         else
 717                                 ServerInstance->SNO->WriteGlobalSno('a', line);
 718                 }
 719
 720                 if (!old)
 721                 {
 722                         // Starting up, so print it out so it's seen. XXX this is a bit of a hack.
 723                         printf("%s\n", line.c_str());
 724                 }
 725         }
 726
 727         errstr.clear();
 728         errstr.str(std::string());
 729
 730         /* No old configuration -> initial boot, nothing more to do here */
 731         if (!old)
 732         {
 733                 if (!valid)
 734                 {
 735                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 736                 }
 737
 738                 return;
 739         }
 740
 741         // If there were errors processing configuration, don't touch modules.
 742         if (!valid)
 743                 return;
 744
 745         ApplyModules(user);
 746 }
 747
 748 void ServerConfig::ApplyModules(User* user)
 749 {
 750         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
 751         std::vector<std::string> added_modules;
 752         std::set<std::string> removed_modules(v.begin(), v.end());
 753
 754         for(int i=0; ; i++)
 755         {
 756                 ConfigTag* tag = ConfValue("module", i);
 757                 if (!tag)
 758                         break;
 759                 std::string name;
 760                 if (tag->readString("name", name))
 761                 {
 762                         // if this module is already loaded, the erase will succeed, so we need do nothing
 763                         // otherwise, we need to add the module (which will be done later)
 764                         if (removed_modules.erase(name) == 0)
 765                                 added_modules.push_back(name);
 766                 }
 767         }
 768
 769         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 770         {
 771                 // Don't remove cmd_*.so, just remove m_*.so
 772                 if (removing->c_str()[0] == 'c')
 773                         continue;
 774                 Module* m = ServerInstance->Modules->Find(*removing);
 775                 if (m && ServerInstance->Modules->Unload(m))
 776                 {
 777                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
 778
 779                         if (user)
 780                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
 781                         else
 782                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
 783                 }
 784                 else
 785                 {
 786                         if (user)
 787                                 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());
 788                         else
 789                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
 790                 }
 791         }
 792
 793         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 794         {
 795                 if (ServerInstance->Modules->Load(adding->c_str()))
 796                 {
 797                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 798                         if (user)
 799                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
 800                         else
 801                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 802                 }
 803                 else
 804                 {
 805                         if (user)
 806                                 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());
 807                         else
 808                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 809                 }
 810         }
 811
 812         if (user)
 813                 user->WriteServ("NOTICE %s :*** Successfully rehashed server.", user->nick.c_str());
 814         else
 815                 ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 816 }
 817
 818 bool ServerConfig::LoadConf(FILE* &conf, const char* filename, bool allowexeinc)
 819 {
 820         std::string line;
 821         char ch;
 822         long linenumber = 1;
 823         long last_successful_parse = 1;
 824         bool in_tag;
 825         bool in_quote;
 826         bool in_comment;
 827         int character_count = 0;
 828
 829         in_tag = false;
 830         in_quote = false;
 831         in_comment = false;
 832
 833         ServerInstance->Logs->Log("CONFIG", DEBUG, "Reading %s", filename);
 834
 835         /* Check if the file open failed first */
 836         if (!conf)
 837         {
 838                 errstr << "LoadConf: Couldn't open config file: " << filename << std::endl;
 839                 return false;
 840         }
 841
 842         for (unsigned int t = 0; t < include_stack.size(); t++)
 843         {
 844                 if (std::string(filename) == include_stack[t])
 845                 {
 846                         errstr << "File " << filename << " is included recursively (looped inclusion)." << std::endl;
 847                         return false;
 848                 }
 849         }
 850
 851         /* It's not already included, add it to the list of files we've loaded */
 852         include_stack.push_back(filename);
 853
 854         /* Start reading characters... */
 855         while ((ch = fgetc(conf)) != EOF)
 856         {
 857                 /*
 858                  * Fix for moronic windows issue spotted by Adremelech.
 859                  * Some windows editors save text files as utf-16, which is
 860                  * a total pain in the ass to parse. Users should save in the
 861                  * right config format! If we ever see a file where the first
 862                  * byte is 0xFF or 0xFE, or the second is 0xFF or 0xFE, then
 863                  * this is most likely a utf-16 file. Bail out and insult user.
 864                  */
 865                 if ((character_count++ < 2) && (ch == '\xFF' || ch == '\xFE'))
 866                 {
 867                         errstr << "File " << filename << " cannot be read, as it is encoded in braindead UTF-16. Save your file as plain ASCII!" << std::endl;
 868                         return false;
 869                 }
 870
 871                 /*
 872                  * Here we try and get individual tags on separate lines,
 873                  * this would be so easy if we just made people format
 874                  * their config files like that, but they don't so...
 875                  * We check for a '<' and then know the line is over when
 876                  * we get a '>' not inside quotes. If we find two '<' and
 877                  * no '>' then die with an error.
 878                  */
 879
 880                 if ((ch == '#') && !in_quote)
 881                         in_comment = true;
 882
 883                 switch (ch)
 884                 {
 885                         case '\n':
 886                                 if (in_quote)
 887                                         line += '\n';
 888                                 linenumber++;
 889                         case '\r':
 890                                 if (!in_quote)
 891                                         in_comment = false;
 892                         case '\0':
 893                                 continue;
 894                         case '\t':
 895                                 ch = ' ';
 896                 }
 897
 898                 if(in_comment)
 899                         continue;
 900
 901                 /* XXX: Added by Brain, May 1st 2006 - Escaping of characters.
 902                  * Note that this WILL NOT usually allow insertion of newlines,
 903                  * because a newline is two characters long. Use it primarily to
 904                  * insert the " symbol.
 905                  *
 906                  * Note that this also involves a further check when parsing the line,
 907                  * which can be found below.
 908                  */
 909                 if ((ch == '\\') && (in_quote) && (in_tag))
 910                 {
 911                         line += ch;
 912                         char real_character;
 913                         if (!feof(conf))
 914                         {
 915                                 real_character = fgetc(conf);
 916                                 if (real_character == 'n')
 917                                         real_character = '\n';
 918                                 line += real_character;
 919                                 continue;
 920                         }
 921                         else
 922                         {
 923                                 errstr << "End of file after a \\, what did you want to escape?: " << filename << ":" << linenumber << std::endl;
 924                                 return false;
 925                         }
 926                 }
 927
 928                 if (ch != '\r')
 929                         line += ch;
 930
 931                 if ((ch != '<') && (!in_tag) && (!in_comment) && (ch > ' ') && (ch != 9))
 932                 {
 933                         errstr << "You have stray characters beyond the tag which starts at " << filename << ":" << last_successful_parse << std::endl;
 934                         return false;
 935                 }
 936
 937                 if (ch == '<')
 938                 {
 939                         if (in_tag)
 940                         {
 941                                 if (!in_quote)
 942                                 {
 943                                         errstr << "The tag at location " << filename << ":" << last_successful_parse << " was valid, but there is an error in the tag which comes after it. You are possibly missing a \" or >. Please check this." << std::endl;
 944                                         return false;
 945                                 }
 946                         }
 947                         else
 948                         {
 949                                 if (in_quote)
 950                                 {
 951                                         errstr << "Parser error: Inside a quote but not within the last valid tag, which was opened at: " << filename << ":" << last_successful_parse << std::endl;
 952                                         return false;
 953                                 }
 954                                 else
 955                                 {
 956                                         // errstr << "Opening new config tag on line " << linenumber << std::endl;
 957                                         in_tag = true;
 958                                 }
 959                         }
 960                 }
 961                 else if (ch == '"')
 962                 {
 963                         if (in_tag)
 964                         {
 965                                 if (in_quote)
 966                                 {
 967                                         // errstr << "Closing quote in config tag on line " << linenumber << std::endl;
 968                                         in_quote = false;
 969                                 }
 970                                 else
 971                                 {
 972                                         // errstr << "Opening quote in config tag on line " << linenumber << std::endl;
 973                                         in_quote = true;
 974                                 }
 975                         }
 976                         else
 977                         {
 978                                 if (in_quote)
 979                                 {
 980                                         errstr << "The tag immediately after the one at " << filename << ":" << last_successful_parse << " has a missing closing \" symbol. Please check this." << std::endl;
 981                                 }
 982                                 else
 983                                 {
 984                                         errstr << "You have opened a quote (\") beyond the tag at " << filename << ":" << last_successful_parse << " without opening a new tag. Please check this." << std::endl;
 985                                 }
 986                         }
 987                 }
 988                 else if (ch == '>')
 989                 {
 990                         if (!in_quote)
 991                         {
 992                                 if (in_tag)
 993                                 {
 994                                         // errstr << "Closing config tag on line " << linenumber << std::endl;
 995                                         in_tag = false;
 996
 997                                         /*
 998                                          * If this finds an <include> then ParseLine can simply call
 999                                          * LoadConf() and load the included config into the same ConfigDataHash
1000                                          */
1001                                         long bl = linenumber;
1002                                         if (!this->ParseLine(filename, line, linenumber, allowexeinc))
1003                                                 return false;
1004                                         last_successful_parse = linenumber;
1005
1006                                         linenumber = bl;
1007
1008                                         line.clear();
1009                                 }
1010                                 else
1011                                 {
1012                                         errstr << "You forgot to close the tag which comes immediately after the one at " << filename << ":" << last_successful_parse << std::endl;
1013                                         return false;
1014                                 }
1015                         }
1016                 }
1017         }
1018
1019         /* Fix for bug #392 - if we reach the end of a file and we are still in a quote or comment, most likely the user fucked up */
1020         if (in_comment || in_quote)
1021         {
1022                 errstr << "Reached end of file whilst still inside a quoted section or tag. This is most likely an error or there \
1023                         is a newline missing from the end of the file: " << filename << ":" << linenumber << std::endl;
1024         }
1025
1026         return true;
1027 }
1028
1029
1030 bool ServerConfig::LoadConf(FILE* &conf, const std::string &filename, bool allowexeinc)
1031 {
1032         return this->LoadConf(conf, filename.c_str(), allowexeinc);
1033 }
1034
1035 bool ServerConfig::ParseLine(const std::string &filename, std::string &line, long &linenumber, bool allowexeinc)
1036 {
1037         std::string tagname;
1038         std::string current_key;
1039         std::string current_value;
1040         reference<ConfigTag> result;
1041         char last_char = 0;
1042         bool got_key;
1043         bool in_quote;
1044
1045         got_key = in_quote = false;
1046
1047         for(std::string::iterator c = line.begin(); c != line.end(); c++)
1048         {
1049                 if (!result)
1050                 {
1051                         /* We don't know the tag name yet. */
1052
1053                         if (*c != ' ')
1054                         {
1055                                 if (*c != '<')
1056                                 {
1057                                         if ((*c >= 'a' && *c <= 'z') || (*c >= 'A' && *c <='Z') || (*c >= '0' && *c <= '9') || *c == '_')
1058                                                 tagname += *c;
1059                                         else
1060                                         {
1061                                                 errstr << "Invalid character in value name of tag: '" << *c << "' in value '" << tagname << "' in filename: " << filename << ":" << linenumber << std::endl;
1062                                                 return false;
1063                                         }
1064                                 }
1065                         }
1066                         else
1067                         {
1068                                 /* We got to a space, we should have the tagname now. */
1069                                 if(tagname.length())
1070                                 {
1071                                         result = new ConfigTag(tagname);
1072                                 }
1073                         }
1074                 }
1075                 else
1076                 {
1077                         /* We have the tag name */
1078                         if (!got_key)
1079                         {
1080                                 /* We're still reading the key name */
1081                                 if ((*c != '=') && (*c != '>'))
1082                                 {
1083                                         if (*c != ' ')
1084                                         {
1085                                                 if ((*c >= 'a' && *c <= 'z') || (*c >= 'A' && *c <='Z') || (*c >= '0' && *c <= '9') || *c == '_')
1086                                                         current_key += *c;
1087                                                 else
1088                                                 {
1089                                                         errstr << "Invalid character in key: '" << *c << "' in key '" << current_key << "' in filename: " << filename << ":" << linenumber << std::endl;
1090                                                         return false;
1091                                                 }
1092                                         }
1093                                 }
1094                                 else
1095                                 {
1096                                         /* We got an '=', end of the key name. */
1097                                         got_key = true;
1098                                 }
1099                         }
1100                         else
1101                         {
1102                                 /* We have the key name, now we're looking for quotes and the value */
1103
1104                                 /* Correctly handle escaped characters here.
1105                                  * See the XXX'ed section above.
1106                                  */
1107                                 if ((*c == '\\') && (in_quote))
1108                                 {
1109                                         c++;
1110                                         if (*c == 'n')
1111                                                 current_value += '\n';
1112                                         else
1113                                                 current_value += *c;
1114                                         continue;
1115                                 }
1116                                 else if ((*c == '\\') && (!in_quote))
1117                                 {
1118                                         errstr << "You can't have an escape sequence outside of a quoted section: " << filename << ":" << linenumber << std::endl;
1119                                         return false;
1120                                 }
1121                                 else if ((*c == '\n') && (in_quote))
1122                                 {
1123                                         /* Got a 'real' \n, treat it as part of the value */
1124                                         current_value += '\n';
1125                                         continue;
1126                                 }
1127                                 else if ((*c == '\r') && (in_quote))
1128                                 {
1129                                         /* Got a \r, drop it */
1130                                         continue;
1131                                 }
1132
1133                                 if (*c == '"')
1134                                 {
1135                                         if (!in_quote)
1136                                         {
1137                                                 /* We're not already in a quote. */
1138                                                 in_quote = true;
1139                                         }
1140                                         else
1141                                         {
1142                                                 /* Leaving the quotes, we have the current value */
1143                                                 result->items.push_back(KeyVal(current_key, current_value));
1144
1145                                                 // std::cout << "<" << tagname << ":" << current_key << "> " << current_value << std::endl;
1146
1147                                                 in_quote = false;
1148                                                 got_key = false;
1149
1150                                                 if ((tagname == "include") && (current_key == "file"))
1151                                                 {
1152                                                         if (!this->DoInclude(current_value, allowexeinc))
1153                                                                 return false;
1154                                                 }
1155                                                 else if ((tagname == "include") && (current_key == "executable"))
1156                                                 {
1157                                                         if (!allowexeinc)
1158                                                         {
1159                                                                 errstr << "Executable includes are not allowed to use <include:executable>\n"
1160                                                                         "This could be an attempt to execute commands from a malicious remote include.\n"
1161                                                                         "If you need multiple levels of remote include, create a script to assemble the "
1162                                                                         "contents locally or include files using <include:file>\n";
1163                                                                 return false;
1164                                                         }
1165
1166                                                         /* Pipe an executable and use its stdout as config data */
1167                                                         if (!this->DoPipe(current_value))
1168                                                                 return false;
1169                                                 }
1170
1171                                                 current_key.clear();
1172                                                 current_value.clear();
1173                                         }
1174                                 }
1175                                 else
1176                                 {
1177                                         if (in_quote)
1178                                         {
1179                                                 last_char = *c;
1180                                                 current_value += *c;
1181                                         }
1182                                 }
1183                         }
1184                 }
1185         }
1186
1187         /* Finished parsing the tag, add it to the config hash */
1188         config_data.insert(std::make_pair(tagname, result));
1189
1190         return true;
1191 }
1192
1193 bool ServerConfig::DoPipe(const std::string &file)
1194 {
1195         FILE* conf = popen(file.c_str(), "r");
1196         bool ret = false;
1197
1198         if (conf)
1199         {
1200                 ret = LoadConf(conf, file.c_str(), false);
1201                 pclose(conf);
1202         }
1203         else
1204                 errstr << "Couldn't execute: " << file << std::endl;
1205
1206         return ret;
1207 }
1208
1209 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
1210 {
1211         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
1212 }
1213
1214 bool ServerConfig::DoInclude(const std::string &file, bool allowexeinc)
1215 {
1216         FILE* conf = fopen(file.c_str(), "r");
1217         bool ret = false;
1218
1219         if (conf)
1220         {
1221                 ret = LoadConf(conf, file, allowexeinc);
1222                 fclose(conf);
1223         }
1224         else
1225                 errstr << "Couldn't open config file: " << file << std::endl;
1226
1227         return ret;
1228 }
1229
1230 ConfigTag* ServerConfig::ConfValue(const std::string &tag, int offset)
1231 {
1232         ConfigDataHash::size_type pos = offset;
1233         if (pos >= config_data.count(tag))
1234                 return NULL;
1235
1236         ConfigDataHash::iterator iter = config_data.find(tag);
1237
1238         for(int i = 0; i < offset; i++)
1239                 iter++;
1240
1241         return iter->second;
1242 }
1243
1244 bool ConfigTag::readString(const std::string& key, std::string& value, bool allow_lf)
1245 {
1246         if (!this)
1247                 return false;
1248         for(std::vector<KeyVal>::iterator j = items.begin(); j != items.end(); ++j)
1249         {
1250                 if(j->first != key)
1251                         continue;
1252                 value = j->second;
1253                 if (!allow_lf && (value.find('\n') != std::string::npos))
1254                 {
1255                         ServerInstance->Logs->Log("CONFIG",DEFAULT, "Value of <" + tag + ":" + key + "> contains a linefeed, and linefeeds in this value are not permitted -- stripped to spaces.");
1256                         for (std::string::iterator n = value.begin(); n != value.end(); n++)
1257                                 if (*n == '\n')
1258                                         *n = ' ';
1259                 }
1260                 return true;
1261         }
1262         return false;
1263 }
1264
1265 std::string ConfigTag::getString(const std::string& key, const std::string& def)
1266 {
1267         std::string res = def;
1268         if (this)
1269                 readString(key, res);
1270         return res;
1271 }
1272
1273 long ConfigTag::getInt(const std::string &key, long def)
1274 {
1275         std::string result;
1276         if(!this || !readString(key, result))
1277                 return def;
1278
1279         const char* res_cstr = result.c_str();
1280         char* res_tail = NULL;
1281         long res = strtol(res_cstr, &res_tail, 0);
1282         if (res_tail == res_cstr)
1283                 return def;
1284         switch (toupper(*res_tail))
1285         {
1286                 case 'K':
1287                         res= res* 1024;
1288                         break;
1289                 case 'M':
1290                         res= res* 1024 * 1024;
1291                         break;
1292                 case 'G':
1293                         res= res* 1024 * 1024 * 1024;
1294                         break;
1295         }
1296         return res;
1297 }
1298
1299 double ConfigTag::getFloat(const std::string &key, double def)
1300 {
1301         std::string result;
1302         if (!readString(key, result))
1303                 return def;
1304         return strtod(result.c_str(), NULL);
1305 }
1306
1307 bool ConfigTag::getBool(const std::string &key, bool def)
1308 {
1309         std::string result;
1310         if(!readString(key, result))
1311                 return def;
1312
1313         return (result == "yes" || result == "true" || result == "1" || result == "on");
1314 }
1315
1316 /** Read the contents of a file located by `fname' into a file_cache pointed at by `F'.
1317  */
1318 bool ServerConfig::ReadFile(file_cache &F, const std::string& fname)
1319 {
1320         if (fname.empty())
1321                 return false;
1322
1323         FILE* file = NULL;
1324         char linebuf[MAXBUF];
1325
1326         F.clear();
1327
1328         if (!FileExists(fname.c_str()))
1329                 return false;
1330         file = fopen(fname.c_str(), "r");
1331
1332         if (file)
1333         {
1334                 while (!feof(file))
1335                 {
1336                         if (fgets(linebuf, sizeof(linebuf), file))
1337                                 linebuf[strlen(linebuf)-1] = 0;
1338                         else
1339                                 *linebuf = 0;
1340
1341                         F.push_back(*linebuf ? linebuf : " ");
1342                 }
1343
1344                 fclose(file);
1345         }
1346         else
1347                 return false;
1348
1349         return true;
1350 }
1351
1352 bool ServerConfig::FileExists(const char* file)
1353 {
1354         struct stat sb;
1355         if (stat(file, &sb) == -1)
1356                 return false;
1357
1358         if ((sb.st_mode & S_IFDIR) > 0)
1359                 return false;
1360
1361         FILE *input = fopen(file, "r");
1362         if (input == NULL)
1363                 return false;
1364         else
1365         {
1366                 fclose(input);
1367                 return true;
1368         }
1369 }
1370
1371 const char* ServerConfig::CleanFilename(const char* name)
1372 {
1373         const char* p = name + strlen(name);
1374         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
1375         return (p != name ? ++p : p);
1376 }
1377
1378
1379 std::string ServerConfig::GetSID()
1380 {
1381         return sid;
1382 }
1383
1384 void ConfigReaderThread::Run()
1385 {
1386         Config = new ServerConfig;
1387         Config->Read();
1388         done = true;
1389 }
1390
1391 void ConfigReaderThread::Finish()
1392 {
1393         ServerConfig* old = ServerInstance->Config;
1394         ServerInstance->Logs->Log("CONFIG",DEBUG,"Switching to new configuration...");
1395         ServerInstance->Logs->CloseLogs();
1396         ServerInstance->Config = this->Config;
1397         ServerInstance->Logs->OpenFileLogs();
1398         Config->Apply(old, TheUserUID);
1399
1400         if (Config->valid)
1401         {
1402                 /*
1403                  * Apply the changed configuration from the rehash.
1404                  *
1405                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
1406                  * thoroughly!!!
1407                  */
1408                 ServerInstance->XLines->CheckELines();
1409                 ServerInstance->XLines->CheckELines();
1410                 ServerInstance->XLines->ApplyLines();
1411                 ServerInstance->Res->Rehash();
1412                 ServerInstance->ResetMaxBans();
1413                 Config->ApplyDisabledCommands(Config->DisabledCommands);
1414                 User* user = TheUserUID.empty() ? ServerInstance->FindNick(TheUserUID) : NULL;
1415                 FOREACH_MOD(I_OnRehash, OnRehash(user));
1416                 ServerInstance->BuildISupport();
1417
1418                 delete old;
1419         }
1420         else
1421         {
1422                 // whoops, abort!
1423                 ServerInstance->Logs->CloseLogs();
1424                 ServerInstance->Config = old;
1425                 ServerInstance->Logs->OpenFileLogs();
1426                 delete this->Config;
1427         }
1428 }