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 FindDNS(std::string& server);
 235 #else
 236 static void FindDNS(std::string& server)
 237 {
 238         if (!server.empty())
 239                 return;
 240
 241         // attempt to look up their nameserver from /etc/resolv.conf
 242         ServerInstance->Logs->Log("CONFIG",DEFAULT,"WARNING: <dns:server> not defined, attempting to find working server in /etc/resolv.conf...");
 243
 244         std::ifstream resolv("/etc/resolv.conf");
 245
 246         while (resolv >> server)
 247         {
 248                 if (server == "nameserver")
 249                 {
 250                         resolv >> server;
 251                         ServerInstance->Logs->Log("CONFIG",DEFAULT,"<dns:server> set to '%s' as first resolver in /etc/resolv.conf.",server.c_str());
 252                         return;
 253                 }
 254         }
 255
 256         ServerInstance->Logs->Log("CONFIG",DEFAULT,"/etc/resolv.conf contains no viable nameserver entries! Defaulting to nameserver '127.0.0.1'!");
 257         server = "127.0.0.1";
 258 }
 259 #endif
 260
 261 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
 262 {
 263         for(int i=0;; ++i)
 264         {
 265                 ConfigTag* ctag = conf->ConfValue(tag, i);
 266                 if (!ctag)
 267                         break;
 268                 std::string mask;
 269                 if (!ctag->readString(key, mask))
 270                         throw CoreException("<"+tag+":"+key+"> missing");
 271                 std::string reason = ctag->getString("reason", "<Config>");
 272                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
 273                 if (!ServerInstance->XLines->AddLine(xl, NULL))
 274                         delete xl;
 275         }
 276 }
 277
 278 void ServerConfig::CrossCheckOperClassType()
 279 {
 280         for (int i = 0;; ++i)
 281         {
 282                 ConfigTag* tag = ConfValue("class", i);
 283                 if (!tag)
 284                         break;
 285                 std::string name = tag->getString("name");
 286                 if (name.empty())
 287                         throw CoreException("<class:name> is required for all <class> tags");
 288                 operclass[name] = tag;
 289         }
 290         for (int i = 0;; ++i)
 291         {
 292                 ConfigTag* tag = ConfValue("type", i);
 293                 if (!tag)
 294                         break;
 295
 296                 std::string name = tag->getString("name");
 297                 if (name.empty())
 298                         throw CoreException("<type:name> is required for all <type> tags");
 299                 opertypes[name] = tag;
 300
 301                 std::string classname;
 302                 irc::spacesepstream str(tag->getString("classes"));
 303                 while (str.GetToken(classname))
 304                 {
 305                         if (operclass.find(classname) == operclass.end())
 306                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 307                 }
 308         }
 309 }
 310
 311 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 312 {
 313         typedef std::map<std::string, ConnectClass*> ClassMap;
 314         ClassMap oldBlocksByMask;
 315         if (current)
 316         {
 317                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 318                 {
 319                         ConnectClass* c = *i;
 320                         std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 321                         typeMask += c->host;
 322                         oldBlocksByMask[typeMask] = c;
 323                 }
 324         }
 325
 326         ClassMap newBlocksByMask;
 327         std::map<std::string, int> names;
 328
 329         bool try_again = true;
 330         for(int tries=0; try_again; tries++)
 331         {
 332                 try_again = false;
 333                 for(unsigned int i=0;; i++)
 334                 {
 335                         ConfigTag* tag = ConfValue("connect", i);
 336                         if (!tag)
 337                                 break;
 338                         if (Classes.size() <= i)
 339                                 Classes.resize(i+1);
 340                         if (Classes[i])
 341                                 continue;
 342
 343                         ConnectClass* parent = NULL;
 344                         std::string parentName = tag->getString("parent");
 345                         if (!parentName.empty())
 346                         {
 347                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 348                                 if (parentIter == names.end())
 349                                 {
 350                                         try_again = true;
 351                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 352                                         if (tries == 50)
 353                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block " + ConvToStr(i));
 354                                         continue;
 355                                 }
 356                                 parent = Classes[parentIter->second];
 357                         }
 358
 359                         std::string name = tag->getString("name");
 360                         if (!name.empty())
 361                         {
 362                                 if (names.find(name) != names.end())
 363                                         throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 364                                 names[name] = i;
 365                         }
 366
 367                         std::string mask, typeMask;
 368                         char type;
 369
 370                         if (tag->readString("allow", mask, false))
 371                         {
 372                                 type = CC_ALLOW;
 373                                 typeMask = 'a' + mask;
 374                         }
 375                         else if (tag->readString("deny", mask, false))
 376                         {
 377                                 type = CC_DENY;
 378                                 typeMask = 'd' + mask;
 379                         }
 380                         else
 381                         {
 382                                 throw CoreException("Connect class must have an allow or deny mask (#" + ConvToStr(i) + ")");
 383                         }
 384                         ClassMap::iterator dupMask = newBlocksByMask.find(typeMask);
 385                         if (dupMask != newBlocksByMask.end())
 386                                 throw CoreException("Two connect classes cannot have the same mask (" + mask + ")");
 387
 388                         ConnectClass* me = parent ?
 389                                 new ConnectClass(tag, type, mask, *parent) :
 390                                 new ConnectClass(tag, type, mask);
 391
 392                         if (!name.empty())
 393                                 me->name = name;
 394
 395                         tag->readString("password", me->pass);
 396                         tag->readString("hash", me->hash);
 397                         me->registration_timeout = tag->getInt("timeout", me->registration_timeout);
 398                         me->pingtime = tag->getInt("pingfreq", me->pingtime);
 399                         std::string sendq;
 400                         if (tag->readString("sendq", sendq))
 401                         {
 402                                 // attempt to guess a good hard/soft sendq from a single value
 403                                 long value = atol(sendq.c_str());
 404                                 if (value > 16384)
 405                                         me->softsendqmax = value / 16;
 406                                 else
 407                                         me->softsendqmax = value;
 408                                 me->hardsendqmax = value * 8;
 409                         }
 410                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 411                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 412                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 413                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 414                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 415                         me->port = tag->getInt("port", me->port);
 416                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 417                         me->limit = tag->getInt("limit", me->limit);
 418
 419                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 420                         if (oldMask != oldBlocksByMask.end())
 421                         {
 422                                 ConnectClass* old = oldMask->second;
 423                                 oldBlocksByMask.erase(oldMask);
 424                                 old->Update(me);
 425                                 delete me;
 426                                 me = old;
 427                         }
 428                         newBlocksByMask[typeMask] = me;
 429                         Classes[i] = me;
 430                 }
 431         }
 432 }
 433
 434 static const Deprecated ChangedConfig[] = {
 435         {"options", "hidelinks",                "has been moved to <security:hidelinks> as of 1.2a3"},
 436         {"options", "hidewhois",                "has been moved to <security:hidewhois> as of 1.2a3"},
 437         {"options", "userstats",                "has been moved to <security:userstats> as of 1.2a3"},
 438         {"options", "customversion",    "has been moved to <security:customversion> as of 1.2a3"},
 439         {"options", "hidesplits",               "has been moved to <security:hidesplits> as of 1.2a3"},
 440         {"options", "hidebans",         "has been moved to <security:hidebans> as of 1.2a3"},
 441         {"options", "hidekills",                "has been moved to <security:hidekills> as of 1.2a3"},
 442         {"options", "operspywhois",             "has been moved to <security:operspywhois> as of 1.2a3"},
 443         {"options", "announceinvites",  "has been moved to <security:announceinvites> as of 1.2a3"},
 444         {"options", "hidemodes",                "has been moved to <security:hidemodes> as of 1.2a3"},
 445         {"options", "maxtargets",               "has been moved to <security:maxtargets> as of 1.2a3"},
 446         {"options",     "nouserdns",            "has been moved to <performance:nouserdns> as of 1.2a3"},
 447         {"options",     "maxwho",               "has been moved to <performance:maxwho> as of 1.2a3"},
 448         {"options",     "softlimit",            "has been moved to <performance:softlimit> as of 1.2a3"},
 449         {"options", "somaxconn",                "has been moved to <performance:somaxconn> as of 1.2a3"},
 450         {"options", "netbuffersize",    "has been moved to <performance:netbuffersize> as of 1.2a3"},
 451         {"options", "maxwho",           "has been moved to <performance:maxwho> as of 1.2a3"},
 452         {"options",     "loglevel",             "1.2 does not use the loglevel value. Please define <log> tags instead."},
 453         {"die",     "value",            "has always been deprecated"},
 454 };
 455
 456 void ServerConfig::Fill()
 457 {
 458         ReqRead(this, "server", "name", ServerName);
 459         ReqRead(this, "power", "diepass", diepass);
 460         ReqRead(this, "power", "restartpass", restartpass);
 461
 462         ConfigTag* options = ConfValue("options");
 463         ConfigTag* security = ConfValue("security");
 464         powerhash = ConfValue("power")->getString("hash");
 465         DieDelay = ConfValue("power")->getInt("pause");
 466         PrefixQuit = options->getString("prefixquit");
 467         SuffixQuit = options->getString("suffixquit");
 468         FixedQuit = options->getString("fixedquit");
 469         PrefixPart = options->getString("prefixpart");
 470         SuffixPart = options->getString("suffixpart");
 471         FixedPart = options->getString("fixedpart");
 472         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 473         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 474         MoronBanner = options->getString("moronbanner", "You're banned!");
 475         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 476         Network = ConfValue("server")->getString("network", "Network");
 477         sid = ConfValue("server")->getString("id", "");
 478         AdminName = ConfValue("admin")->getString("name", "");
 479         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 480         AdminNick = ConfValue("admin")->getString("nick", "admin");
 481         ModPath = options->getString("moduledir", MOD_PATH);
 482         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 483         MaxWhoResults = ConfValue("performance")->getInt("maxwho", 1024);
 484         DNSServer = ConfValue("dns")->getString("server");
 485         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 486         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 487         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 488         SetUser = security->getString("runasuser");
 489         SetGroup = security->getString("runasgroup");
 490         UserStats = security->getString("userstats");
 491         CustomVersion = security->getString("customversion");
 492         HideSplits = security->getBool("hidesplits");
 493         HideBans = security->getBool("hidebans");
 494         HideWhoisServer = security->getString("hidewhois");
 495         HideKillsServer = security->getString("hidekills");
 496         OperSpyWhois = security->getBool("operspywhois");
 497         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 498         GenericOper = security->getBool("genericoper");
 499         NoUserDns = ConfValue("performance")->getBool("nouserdns");
 500         SyntaxHints = options->getBool("syntaxhints");
 501         CycleHosts = options->getBool("cyclehosts");
 502         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 503         FullHostInTopic = options->getBool("hostintopic");
 504         MaxTargets = security->getInt("maxtargets", 20);
 505         DefaultModes = options->getString("defaultmodes", "nt");
 506         PID = ConfValue("pid")->getString("file");
 507         WhoWasGroupSize = ConfValue("whowas")->getInt("groupsize");
 508         WhoWasMaxGroups = ConfValue("whowas")->getInt("maxgroups");
 509         WhoWasMaxKeep = ServerInstance->Duration(ConfValue("whowas")->getString("maxkeep"));
 510         DieValue = ConfValue("die")->getString("value");
 511         MaxChans = ConfValue("channels")->getInt("users");
 512         OperMaxChans = ConfValue("channels")->getInt("opers");
 513         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone");
 514         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone");
 515         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 516         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 517         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 518         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 519         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 520         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 521         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 522         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 523         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 524         InvBypassModes = options->getBool("invitebypassmodes", true);
 525
 526         range(SoftLimit, 10, ServerInstance->SE->GetMaxFds(), ServerInstance->SE->GetMaxFds(), "<performance:softlimit>");
 527         range(MaxConn, 0, SOMAXCONN, SOMAXCONN, "<performance:somaxconn>");
 528         range(MaxTargets, 1, 31, 20, "<security:maxtargets>");
 529         range(NetBufferSize, 1024, 65534, 10240, "<performance:netbuffersize>");
 530         range(MaxWhoResults, 1, 65535, 1024, "<performace:maxwho>");
 531         range(WhoWasGroupSize, 0, 10000, 10, "<whowas:groupsize>");
 532         range(WhoWasMaxGroups, 0, 1000000, 10240, "<whowas:maxgroups>");
 533         range(WhoWasMaxKeep, 3600, INT_MAX, 3600, "<whowas:maxkeep>");
 534
 535         ValidIP(DNSServer, "<dns:server>");
 536         ValidHost(ServerName, "<server:name>");
 537         if (!sid.empty() && !ServerInstance->IsSID(sid))
 538                 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.");
 539
 540         for (int i = 0;; ++i)
 541         {
 542                 ConfigTag* tag = ConfValue("uline", i);
 543                 if (!tag)
 544                         break;
 545                 std::string server;
 546                 if (!tag->readString("server", server))
 547                         throw CoreException("<uline> tag missing server");
 548                 ulines[assign(server)] = tag->getBool("silent");
 549         }
 550
 551         for(int i=0;; ++i)
 552         {
 553                 ConfigTag* tag = ConfValue("banlist", i);
 554                 if (!tag)
 555                         break;
 556                 std::string chan;
 557                 if (!tag->readString("chan", chan))
 558                         throw CoreException("<banlist> tag missing chan");
 559                 maxbans[chan] = tag->getInt("limit");
 560         }
 561
 562         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 563         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 564         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 565         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 566
 567         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 568         for (const unsigned char* p = (const unsigned char*)ConfValue("disabled")->getString("usermodes").c_str(); *p; ++p)
 569         {
 570                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid usermode ")+(char)*p+" was found.");
 571                 DisabledUModes[*p - 'A'] = 1;
 572         }
 573
 574         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 575         for (const unsigned char* p = (const unsigned char*)ConfValue("disabled")->getString("chanmodes").c_str(); *p; ++p)
 576         {
 577                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid chanmode ")+(char)*p+" was found.");
 578                 DisabledCModes[*p - 'A'] = 1;
 579         }
 580
 581         memset(HideModeLists, 0, sizeof(HideModeLists));
 582         for (const unsigned char* p = (const unsigned char*)ConfValue("security")->getString("hidemodes").c_str(); *p; ++p)
 583                 HideModeLists[*p] = true;
 584
 585         std::string v = security->getString("announceinvites");
 586
 587         if (v == "ops")
 588                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 589         else if (v == "all")
 590                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 591         else if (v == "dynamic")
 592                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 593         else
 594                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 595
 596         bool AllowHalfOp = options->getBool("allowhalfop");
 597         ModeHandler* mh = ServerInstance->Modes->FindMode('h', MODETYPE_CHANNEL);
 598         if (AllowHalfOp && !mh) {
 599                 ServerInstance->Logs->Log("CONFIG", DEFAULT, "Enabling halfop mode.");
 600                 mh = new ModeChannelHalfOp;
 601                 ServerInstance->Modes->AddMode(mh);
 602         } else if (!AllowHalfOp && mh) {
 603                 ServerInstance->Logs->Log("CONFIG", DEFAULT, "Disabling halfop mode.");
 604                 ServerInstance->Modes->DelMode(mh);
 605                 delete mh;
 606         }
 607
 608         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
 609         if (whowas)
 610                 WhowasRequest(NULL, whowas, WhowasRequest::WHOWAS_PRUNE).Send();
 611         Limits.Finalise();
 612
 613 }
 614
 615 /* These tags MUST occur and must ONLY occur once in the config file */
 616 static const char* const Once[] = { "server", "admin", "files", "power", "options" };
 617
 618 // WARNING: it is not safe to use most of the codebase in this function, as it
 619 // will run in the config reader thread
 620 void ServerConfig::Read()
 621 {
 622         /* Load and parse the config file, if there are any errors then explode */
 623
 624         if (!this->DoInclude(ServerInstance->ConfigFileName, true))
 625         {
 626                 valid = false;
 627                 return;
 628         }
 629 }
 630
 631 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 632 {
 633         valid = true;
 634         /* std::ostringstream::clear() does not clear the string itself, only the error flags. */
 635         errstr.clear();
 636         errstr.str().clear();
 637         include_stack.clear();
 638
 639         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 640         try
 641         {
 642                 /* Check we dont have more than one of singular tags, or any of them missing
 643                  */
 644                 for (int Index = 0; Index * sizeof(*Once) < sizeof(Once); Index++)
 645                         CheckOnce(Once[Index]);
 646
 647                 for (int Index = 0; Index * sizeof(Deprecated) < sizeof(ChangedConfig); Index++)
 648                 {
 649                         std::string dummy;
 650                         if (ConfValue(ChangedConfig[Index].tag)->readString(ChangedConfig[Index].value, dummy, true))
 651                                 throw CoreException(std::string("Your configuration contains a deprecated value: <") + ChangedConfig[Index].tag + ":" + ChangedConfig[Index].value + "> - " + ChangedConfig[Index].reason);
 652                 }
 653
 654                 Fill();
 655
 656                 // Handle special items
 657                 CrossCheckOperClassType();
 658                 CrossCheckConnectBlocks(old);
 659         }
 660         catch (CoreException &ce)
 661         {
 662                 errstr << ce.GetReason();
 663                 valid = false;
 664         }
 665
 666         // write once here, to try it out and make sure its ok
 667         ServerInstance->WritePID(this->PID);
 668
 669         /*
 670          * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
 671          */
 672         if (old)
 673         {
 674                 this->ServerName = old->ServerName;
 675                 this->sid = old->sid;
 676                 this->argv = old->argv;
 677                 this->argc = old->argc;
 678
 679                 // Same for ports... they're bound later on first run.
 680                 FailedPortList pl;
 681                 ServerInstance->BindPorts(pl);
 682                 if (pl.size())
 683                 {
 684                         errstr << "Not all your client ports could be bound.\nThe following port(s) failed to bind:\n";
 685
 686                         int j = 1;
 687                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 688                         {
 689                                 char buf[MAXBUF];
 690                                 snprintf(buf, MAXBUF, "%d.   Address: %s   Reason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 691                                 errstr << buf;
 692                         }
 693                 }
 694         }
 695
 696         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
 697
 698         valid = errstr.str().empty();
 699         if (!valid)
 700                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "There were errors in your configuration file:");
 701
 702         while (errstr.good())
 703         {
 704                 std::string line;
 705                 getline(errstr, line, '\n');
 706                 if (!line.empty())
 707                 {
 708                         if (user)
 709                                 user->WriteServ("NOTICE %s :*** %s", user->nick.c_str(), line.c_str());
 710                         else
 711                                 ServerInstance->SNO->WriteGlobalSno('a', line);
 712                 }
 713
 714                 if (!old)
 715                 {
 716                         // Starting up, so print it out so it's seen. XXX this is a bit of a hack.
 717                         printf("%s\n", line.c_str());
 718                 }
 719         }
 720
 721         errstr.clear();
 722         errstr.str(std::string());
 723
 724         /* No old configuration -> initial boot, nothing more to do here */
 725         if (!old)
 726         {
 727                 if (!valid)
 728                 {
 729                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
 730                 }
 731
 732                 return;
 733         }
 734
 735         // If there were errors processing configuration, don't touch modules.
 736         if (!valid)
 737                 return;
 738
 739         ApplyModules(user);
 740 }
 741
 742 void ServerConfig::ApplyModules(User* user)
 743 {
 744         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
 745         std::vector<std::string> added_modules;
 746         std::set<std::string> removed_modules(v.begin(), v.end());
 747
 748         for(int i=0; ; i++)
 749         {
 750                 ConfigTag* tag = ConfValue("module", i);
 751                 if (!tag)
 752                         break;
 753                 std::string name;
 754                 if (tag->readString("name", name))
 755                 {
 756                         // if this module is already loaded, the erase will succeed, so we need do nothing
 757                         // otherwise, we need to add the module (which will be done later)
 758                         if (removed_modules.erase(name) == 0)
 759                                 added_modules.push_back(name);
 760                 }
 761         }
 762
 763         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 764         {
 765                 // Don't remove cmd_*.so, just remove m_*.so
 766                 if (removing->c_str()[0] == 'c')
 767                         continue;
 768                 Module* m = ServerInstance->Modules->Find(*removing);
 769                 if (m && ServerInstance->Modules->Unload(m))
 770                 {
 771                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
 772
 773                         if (user)
 774                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
 775                         else
 776                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
 777                 }
 778                 else
 779                 {
 780                         if (user)
 781                                 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());
 782                         else
 783                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
 784                 }
 785         }
 786
 787         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 788         {
 789                 if (ServerInstance->Modules->Load(adding->c_str()))
 790                 {
 791                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
 792                         if (user)
 793                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
 794                         else
 795                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
 796                 }
 797                 else
 798                 {
 799                         if (user)
 800                                 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());
 801                         else
 802                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
 803                 }
 804         }
 805
 806         if (user)
 807                 user->WriteServ("NOTICE %s :*** Successfully rehashed server.", user->nick.c_str());
 808         else
 809                 ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
 810 }
 811
 812 bool ServerConfig::LoadConf(FILE* &conf, const char* filename, bool allowexeinc)
 813 {
 814         std::string line;
 815         char ch;
 816         long linenumber = 1;
 817         long last_successful_parse = 1;
 818         bool in_tag;
 819         bool in_quote;
 820         bool in_comment;
 821         int character_count = 0;
 822
 823         in_tag = false;
 824         in_quote = false;
 825         in_comment = false;
 826
 827         ServerInstance->Logs->Log("CONFIG", DEBUG, "Reading %s", filename);
 828
 829         /* Check if the file open failed first */
 830         if (!conf)
 831         {
 832                 errstr << "LoadConf: Couldn't open config file: " << filename << std::endl;
 833                 return false;
 834         }
 835
 836         for (unsigned int t = 0; t < include_stack.size(); t++)
 837         {
 838                 if (std::string(filename) == include_stack[t])
 839                 {
 840                         errstr << "File " << filename << " is included recursively (looped inclusion)." << std::endl;
 841                         return false;
 842                 }
 843         }
 844
 845         /* It's not already included, add it to the list of files we've loaded */
 846         include_stack.push_back(filename);
 847
 848         /* Start reading characters... */
 849         while ((ch = fgetc(conf)) != EOF)
 850         {
 851                 /*
 852                  * Fix for moronic windows issue spotted by Adremelech.
 853                  * Some windows editors save text files as utf-16, which is
 854                  * a total pain in the ass to parse. Users should save in the
 855                  * right config format! If we ever see a file where the first
 856                  * byte is 0xFF or 0xFE, or the second is 0xFF or 0xFE, then
 857                  * this is most likely a utf-16 file. Bail out and insult user.
 858                  */
 859                 if ((character_count++ < 2) && (ch == '\xFF' || ch == '\xFE'))
 860                 {
 861                         errstr << "File " << filename << " cannot be read, as it is encoded in braindead UTF-16. Save your file as plain ASCII!" << std::endl;
 862                         return false;
 863                 }
 864
 865                 /*
 866                  * Here we try and get individual tags on separate lines,
 867                  * this would be so easy if we just made people format
 868                  * their config files like that, but they don't so...
 869                  * We check for a '<' and then know the line is over when
 870                  * we get a '>' not inside quotes. If we find two '<' and
 871                  * no '>' then die with an error.
 872                  */
 873
 874                 if ((ch == '#') && !in_quote)
 875                         in_comment = true;
 876
 877                 switch (ch)
 878                 {
 879                         case '\n':
 880                                 if (in_quote)
 881                                         line += '\n';
 882                                 linenumber++;
 883                         case '\r':
 884                                 if (!in_quote)
 885                                         in_comment = false;
 886                         case '\0':
 887                                 continue;
 888                         case '\t':
 889                                 ch = ' ';
 890                 }
 891
 892                 if(in_comment)
 893                         continue;
 894
 895                 /* XXX: Added by Brain, May 1st 2006 - Escaping of characters.
 896                  * Note that this WILL NOT usually allow insertion of newlines,
 897                  * because a newline is two characters long. Use it primarily to
 898                  * insert the " symbol.
 899                  *
 900                  * Note that this also involves a further check when parsing the line,
 901                  * which can be found below.
 902                  */
 903                 if ((ch == '\\') && (in_quote) && (in_tag))
 904                 {
 905                         line += ch;
 906                         char real_character;
 907                         if (!feof(conf))
 908                         {
 909                                 real_character = fgetc(conf);
 910                                 if (real_character == 'n')
 911                                         real_character = '\n';
 912                                 line += real_character;
 913                                 continue;
 914                         }
 915                         else
 916                         {
 917                                 errstr << "End of file after a \\, what did you want to escape?: " << filename << ":" << linenumber << std::endl;
 918                                 return false;
 919                         }
 920                 }
 921
 922                 if (ch != '\r')
 923                         line += ch;
 924
 925                 if ((ch != '<') && (!in_tag) && (!in_comment) && (ch > ' ') && (ch != 9))
 926                 {
 927                         errstr << "You have stray characters beyond the tag which starts at " << filename << ":" << last_successful_parse << std::endl;
 928                         return false;
 929                 }
 930
 931                 if (ch == '<')
 932                 {
 933                         if (in_tag)
 934                         {
 935                                 if (!in_quote)
 936                                 {
 937                                         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;
 938                                         return false;
 939                                 }
 940                         }
 941                         else
 942                         {
 943                                 if (in_quote)
 944                                 {
 945                                         errstr << "Parser error: Inside a quote but not within the last valid tag, which was opened at: " << filename << ":" << last_successful_parse << std::endl;
 946                                         return false;
 947                                 }
 948                                 else
 949                                 {
 950                                         // errstr << "Opening new config tag on line " << linenumber << std::endl;
 951                                         in_tag = true;
 952                                 }
 953                         }
 954                 }
 955                 else if (ch == '"')
 956                 {
 957                         if (in_tag)
 958                         {
 959                                 if (in_quote)
 960                                 {
 961                                         // errstr << "Closing quote in config tag on line " << linenumber << std::endl;
 962                                         in_quote = false;
 963                                 }
 964                                 else
 965                                 {
 966                                         // errstr << "Opening quote in config tag on line " << linenumber << std::endl;
 967                                         in_quote = true;
 968                                 }
 969                         }
 970                         else
 971                         {
 972                                 if (in_quote)
 973                                 {
 974                                         errstr << "The tag immediately after the one at " << filename << ":" << last_successful_parse << " has a missing closing \" symbol. Please check this." << std::endl;
 975                                 }
 976                                 else
 977                                 {
 978                                         errstr << "You have opened a quote (\") beyond the tag at " << filename << ":" << last_successful_parse << " without opening a new tag. Please check this." << std::endl;
 979                                 }
 980                         }
 981                 }
 982                 else if (ch == '>')
 983                 {
 984                         if (!in_quote)
 985                         {
 986                                 if (in_tag)
 987                                 {
 988                                         // errstr << "Closing config tag on line " << linenumber << std::endl;
 989                                         in_tag = false;
 990
 991                                         /*
 992                                          * If this finds an <include> then ParseLine can simply call
 993                                          * LoadConf() and load the included config into the same ConfigDataHash
 994                                          */
 995                                         long bl = linenumber;
 996                                         if (!this->ParseLine(filename, line, linenumber, allowexeinc))
 997                                                 return false;
 998                                         last_successful_parse = linenumber;
 999
1000                                         linenumber = bl;
1001
1002                                         line.clear();
1003                                 }
1004                                 else
1005                                 {
1006                                         errstr << "You forgot to close the tag which comes immediately after the one at " << filename << ":" << last_successful_parse << std::endl;
1007                                         return false;
1008                                 }
1009                         }
1010                 }
1011         }
1012
1013         /* 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 */
1014         if (in_comment || in_quote)
1015         {
1016                 errstr << "Reached end of file whilst still inside a quoted section or tag. This is most likely an error or there \
1017                         is a newline missing from the end of the file: " << filename << ":" << linenumber << std::endl;
1018         }
1019
1020         return true;
1021 }
1022
1023
1024 bool ServerConfig::LoadConf(FILE* &conf, const std::string &filename, bool allowexeinc)
1025 {
1026         return this->LoadConf(conf, filename.c_str(), allowexeinc);
1027 }
1028
1029 bool ServerConfig::ParseLine(const std::string &filename, std::string &line, long &linenumber, bool allowexeinc)
1030 {
1031         std::string tagname;
1032         std::string current_key;
1033         std::string current_value;
1034         reference<ConfigTag> result;
1035         char last_char = 0;
1036         bool got_key;
1037         bool in_quote;
1038
1039         got_key = in_quote = false;
1040
1041         for(std::string::iterator c = line.begin(); c != line.end(); c++)
1042         {
1043                 if (!result)
1044                 {
1045                         /* We don't know the tag name yet. */
1046
1047                         if (*c != ' ')
1048                         {
1049                                 if (*c != '<')
1050                                 {
1051                                         if ((*c >= 'a' && *c <= 'z') || (*c >= 'A' && *c <='Z') || (*c >= '0' && *c <= '9') || *c == '_')
1052                                                 tagname += *c;
1053                                         else
1054                                         {
1055                                                 errstr << "Invalid character in value name of tag: '" << *c << "' in value '" << tagname << "' in filename: " << filename << ":" << linenumber << std::endl;
1056                                                 return false;
1057                                         }
1058                                 }
1059                         }
1060                         else
1061                         {
1062                                 /* We got to a space, we should have the tagname now. */
1063                                 if(tagname.length())
1064                                 {
1065                                         result = new ConfigTag(tagname);
1066                                 }
1067                         }
1068                 }
1069                 else
1070                 {
1071                         /* We have the tag name */
1072                         if (!got_key)
1073                         {
1074                                 /* We're still reading the key name */
1075                                 if ((*c != '=') && (*c != '>'))
1076                                 {
1077                                         if (*c != ' ')
1078                                         {
1079                                                 if ((*c >= 'a' && *c <= 'z') || (*c >= 'A' && *c <='Z') || (*c >= '0' && *c <= '9') || *c == '_')
1080                                                         current_key += *c;
1081                                                 else
1082                                                 {
1083                                                         errstr << "Invalid character in key: '" << *c << "' in key '" << current_key << "' in filename: " << filename << ":" << linenumber << std::endl;
1084                                                         return false;
1085                                                 }
1086                                         }
1087                                 }
1088                                 else
1089                                 {
1090                                         /* We got an '=', end of the key name. */
1091                                         got_key = true;
1092                                 }
1093                         }
1094                         else
1095                         {
1096                                 /* We have the key name, now we're looking for quotes and the value */
1097
1098                                 /* Correctly handle escaped characters here.
1099                                  * See the XXX'ed section above.
1100                                  */
1101                                 if ((*c == '\\') && (in_quote))
1102                                 {
1103                                         c++;
1104                                         if (*c == 'n')
1105                                                 current_value += '\n';
1106                                         else
1107                                                 current_value += *c;
1108                                         continue;
1109                                 }
1110                                 else if ((*c == '\\') && (!in_quote))
1111                                 {
1112                                         errstr << "You can't have an escape sequence outside of a quoted section: " << filename << ":" << linenumber << std::endl;
1113                                         return false;
1114                                 }
1115                                 else if ((*c == '\n') && (in_quote))
1116                                 {
1117                                         /* Got a 'real' \n, treat it as part of the value */
1118                                         current_value += '\n';
1119                                         continue;
1120                                 }
1121                                 else if ((*c == '\r') && (in_quote))
1122                                 {
1123                                         /* Got a \r, drop it */
1124                                         continue;
1125                                 }
1126
1127                                 if (*c == '"')
1128                                 {
1129                                         if (!in_quote)
1130                                         {
1131                                                 /* We're not already in a quote. */
1132                                                 in_quote = true;
1133                                         }
1134                                         else
1135                                         {
1136                                                 /* Leaving the quotes, we have the current value */
1137                                                 result->items.push_back(KeyVal(current_key, current_value));
1138
1139                                                 // std::cout << "<" << tagname << ":" << current_key << "> " << current_value << std::endl;
1140
1141                                                 in_quote = false;
1142                                                 got_key = false;
1143
1144                                                 if ((tagname == "include") && (current_key == "file"))
1145                                                 {
1146                                                         if (!this->DoInclude(current_value, allowexeinc))
1147                                                                 return false;
1148                                                 }
1149                                                 else if ((tagname == "include") && (current_key == "executable"))
1150                                                 {
1151                                                         if (!allowexeinc)
1152                                                         {
1153                                                                 errstr << "Executable includes are not allowed to use <include:executable>\n"
1154                                                                         "This could be an attempt to execute commands from a malicious remote include.\n"
1155                                                                         "If you need multiple levels of remote include, create a script to assemble the "
1156                                                                         "contents locally or include files using <include:file>\n";
1157                                                                 return false;
1158                                                         }
1159
1160                                                         /* Pipe an executable and use its stdout as config data */
1161                                                         if (!this->DoPipe(current_value))
1162                                                                 return false;
1163                                                 }
1164
1165                                                 current_key.clear();
1166                                                 current_value.clear();
1167                                         }
1168                                 }
1169                                 else
1170                                 {
1171                                         if (in_quote)
1172                                         {
1173                                                 last_char = *c;
1174                                                 current_value += *c;
1175                                         }
1176                                 }
1177                         }
1178                 }
1179         }
1180
1181         /* Finished parsing the tag, add it to the config hash */
1182         config_data.insert(std::make_pair(tagname, result));
1183
1184         return true;
1185 }
1186
1187 bool ServerConfig::DoPipe(const std::string &file)
1188 {
1189         FILE* conf = popen(file.c_str(), "r");
1190         bool ret = false;
1191
1192         if (conf)
1193         {
1194                 ret = LoadConf(conf, file.c_str(), false);
1195                 pclose(conf);
1196         }
1197         else
1198                 errstr << "Couldn't execute: " << file << std::endl;
1199
1200         return ret;
1201 }
1202
1203 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
1204 {
1205         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
1206 }
1207
1208 bool ServerConfig::DoInclude(const std::string &file, bool allowexeinc)
1209 {
1210         FILE* conf = fopen(file.c_str(), "r");
1211         bool ret = false;
1212
1213         if (conf)
1214         {
1215                 ret = LoadConf(conf, file, allowexeinc);
1216                 fclose(conf);
1217         }
1218         else
1219                 errstr << "Couldn't open config file: " << file << std::endl;
1220
1221         return ret;
1222 }
1223
1224 ConfigTag* ServerConfig::ConfValue(const std::string &tag, int offset)
1225 {
1226         ConfigDataHash::size_type pos = offset;
1227         if (pos >= config_data.count(tag))
1228                 return NULL;
1229
1230         ConfigDataHash::iterator iter = config_data.find(tag);
1231
1232         for(int i = 0; i < offset; i++)
1233                 iter++;
1234
1235         return iter->second;
1236 }
1237
1238 bool ConfigTag::readString(const std::string& key, std::string& value, bool allow_lf)
1239 {
1240         if (!this)
1241                 return false;
1242         for(std::vector<KeyVal>::iterator j = items.begin(); j != items.end(); ++j)
1243         {
1244                 if(j->first != key)
1245                         continue;
1246                 value = j->second;
1247                 if (!allow_lf && (value.find('\n') != std::string::npos))
1248                 {
1249                         ServerInstance->Logs->Log("CONFIG",DEFAULT, "Value of <" + tag + ":" + key + "> contains a linefeed, and linefeeds in this value are not permitted -- stripped to spaces.");
1250                         for (std::string::iterator n = value.begin(); n != value.end(); n++)
1251                                 if (*n == '\n')
1252                                         *n = ' ';
1253                 }
1254                 return true;
1255         }
1256         return false;
1257 }
1258
1259 std::string ConfigTag::getString(const std::string& key, const std::string& def)
1260 {
1261         std::string res = def;
1262         if (this)
1263                 readString(key, res);
1264         return res;
1265 }
1266
1267 long ConfigTag::getInt(const std::string &key, long def)
1268 {
1269         std::string result;
1270         if(!this || !readString(key, result))
1271                 return def;
1272
1273         const char* res_cstr = result.c_str();
1274         char* res_tail = NULL;
1275         long res = strtol(res_cstr, &res_tail, 0);
1276         if (res_tail == res_cstr)
1277                 return def;
1278         switch (toupper(*res_tail))
1279         {
1280                 case 'K':
1281                         res= res* 1024;
1282                         break;
1283                 case 'M':
1284                         res= res* 1024 * 1024;
1285                         break;
1286                 case 'G':
1287                         res= res* 1024 * 1024 * 1024;
1288                         break;
1289         }
1290         return res;
1291 }
1292
1293 double ConfigTag::getFloat(const std::string &key, double def)
1294 {
1295         std::string result;
1296         if (!readString(key, result))
1297                 return def;
1298         return strtod(result.c_str(), NULL);
1299 }
1300
1301 bool ConfigTag::getBool(const std::string &key, bool def)
1302 {
1303         std::string result;
1304         if(!readString(key, result))
1305                 return def;
1306
1307         return (result == "yes" || result == "true" || result == "1" || result == "on");
1308 }
1309
1310 /** Read the contents of a file located by `fname' into a file_cache pointed at by `F'.
1311  */
1312 bool ServerConfig::ReadFile(file_cache &F, const std::string& fname)
1313 {
1314         if (fname.empty())
1315                 return false;
1316
1317         FILE* file = NULL;
1318         char linebuf[MAXBUF];
1319
1320         F.clear();
1321
1322         if (!FileExists(fname.c_str()))
1323                 return false;
1324         file = fopen(fname.c_str(), "r");
1325
1326         if (file)
1327         {
1328                 while (!feof(file))
1329                 {
1330                         if (fgets(linebuf, sizeof(linebuf), file))
1331                                 linebuf[strlen(linebuf)-1] = 0;
1332                         else
1333                                 *linebuf = 0;
1334
1335                         F.push_back(*linebuf ? linebuf : " ");
1336                 }
1337
1338                 fclose(file);
1339         }
1340         else
1341                 return false;
1342
1343         return true;
1344 }
1345
1346 bool ServerConfig::FileExists(const char* file)
1347 {
1348         struct stat sb;
1349         if (stat(file, &sb) == -1)
1350                 return false;
1351
1352         if ((sb.st_mode & S_IFDIR) > 0)
1353                 return false;
1354
1355         FILE *input = fopen(file, "r");
1356         if (input == NULL)
1357                 return false;
1358         else
1359         {
1360                 fclose(input);
1361                 return true;
1362         }
1363 }
1364
1365 const char* ServerConfig::CleanFilename(const char* name)
1366 {
1367         const char* p = name + strlen(name);
1368         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
1369         return (p != name ? ++p : p);
1370 }
1371
1372
1373 std::string ServerConfig::GetSID()
1374 {
1375         return sid;
1376 }
1377
1378 void ConfigReaderThread::Run()
1379 {
1380         Config = new ServerConfig;
1381         Config->Read();
1382         Config->ReadFile(Config->MOTD, Config->ConfValue("files")->getString("motd"));
1383         Config->ReadFile(Config->RULES, Config->ConfValue("files")->getString("rules"));
1384         FindDNS(Config->DNSServer);
1385
1386         done = true;
1387 }
1388
1389 void ConfigReaderThread::Finish()
1390 {
1391         ServerConfig* old = ServerInstance->Config;
1392         ServerInstance->Logs->Log("CONFIG",DEBUG,"Switching to new configuration...");
1393         ServerInstance->Logs->CloseLogs();
1394         ServerInstance->Config = this->Config;
1395         ServerInstance->Logs->OpenFileLogs();
1396         Config->Apply(old, TheUserUID);
1397
1398         if (Config->valid)
1399         {
1400                 /*
1401                  * Apply the changed configuration from the rehash.
1402                  *
1403                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
1404                  * thoroughly!!!
1405                  */
1406                 ServerInstance->XLines->CheckELines();
1407                 ServerInstance->XLines->CheckELines();
1408                 ServerInstance->XLines->ApplyLines();
1409                 ServerInstance->Res->Rehash();
1410                 ServerInstance->ResetMaxBans();
1411                 Config->ApplyDisabledCommands(Config->DisabledCommands);
1412                 User* user = TheUserUID.empty() ? ServerInstance->FindNick(TheUserUID) : NULL;
1413                 FOREACH_MOD(I_OnRehash, OnRehash(user));
1414                 ServerInstance->BuildISupport();
1415
1416                 delete old;
1417         }
1418         else
1419         {
1420                 // whoops, abort!
1421                 ServerInstance->Logs->CloseLogs();
1422                 ServerInstance->Config = old;
1423                 ServerInstance->Logs->OpenFileLogs();
1424                 delete this->Config;
1425         }
1426 }