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: tools/gdbargs $(BASE)/.gdbargs */
  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 struct fpos
  36 {
  37         std::string filename;
  38         int line;
  39         int col;
  40         fpos(const std::string& name, int l = 1, int c = 1) : filename(name), line(l), col(c) {}
  41         std::string str()
  42         {
  43                 return filename + ":" + ConvToStr(line) + ":" + ConvToStr(col);
  44         }
  45 };
  46
  47 enum ParseFlags
  48 {
  49         FLAG_NO_EXEC = 1,
  50         FLAG_NO_INC = 2
  51 };
  52
  53 struct ParseStack
  54 {
  55         std::vector<std::string> reading;
  56         std::map<std::string, std::string> vars;
  57         ConfigDataHash& output;
  58         std::stringstream& errstr;
  59
  60         ParseStack(ServerConfig* conf)
  61                 : output(conf->config_data), errstr(conf->errstr)
  62         {
  63                 vars["amp"] = "&";
  64                 vars["quot"] = "\"";
  65                 vars["newline"] = vars["nl"] = "\n";
  66         }
  67         bool ParseFile(const std::string& name, int flags);
  68         bool ParseExec(const std::string& name, int flags);
  69         void DoInclude(ConfigTag* includeTag, int flags);
  70 };
  71
  72 struct Parser
  73 {
  74         ParseStack& stack;
  75         const int flags;
  76         FILE* const file;
  77         fpos current;
  78         fpos last_tag;
  79         reference<ConfigTag> tag;
  80         int ungot;
  81
  82         Parser(ParseStack& me, int myflags, FILE* conf, const std::string& name)
  83                 : stack(me), flags(myflags), file(conf), current(name), last_tag(name), ungot(-1)
  84         { }
  85
  86         int next(bool eof_ok = false)
  87         {
  88                 if (ungot != -1)
  89                 {
  90                         int ch = ungot;
  91                         ungot = -1;
  92                         return ch;
  93                 }
  94                 int ch = fgetc(file);
  95                 if (ch == EOF && !eof_ok)
  96                 {
  97                         throw CoreException("Unexpected end-of-file");
  98                 }
  99                 else if (ch == '\n')
 100                 {
 101                         current.line++;
 102                         current.col = 0;
 103                 }
 104                 else
 105                 {
 106                         current.col++;
 107                 }
 108                 return ch;
 109         }
 110
 111         void unget(int ch)
 112         {
 113                 if (ungot != -1)
 114                         throw CoreException("INTERNAL ERROR: cannot unget twice");
 115                 ungot = ch;
 116         }
 117
 118         void comment()
 119         {
 120                 while (1)
 121                 {
 122                         int ch = next();
 123                         if (ch == '\n')
 124                                 return;
 125                 }
 126         }
 127
 128         void nextword(std::string& rv)
 129         {
 130                 int ch = next();
 131                 while (isspace(ch))
 132                         ch = next();
 133                 while (isalnum(ch) || ch == '_')
 134                 {
 135                         rv.push_back(ch);
 136                         ch = next();
 137                 }
 138                 unget(ch);
 139         }
 140
 141         bool kv()
 142         {
 143                 std::string key;
 144                 nextword(key);
 145                 int ch = next();
 146                 if (ch == '>' && key.empty())
 147                 {
 148                         return false;
 149                 }
 150                 else if (ch == '#' && key.empty())
 151                 {
 152                         comment();
 153                         return true;
 154                 }
 155                 else if (ch != '=')
 156                 {
 157                         throw CoreException("Invalid character " + std::string(1, ch) + " in key (" + key + ")");
 158                 }
 159
 160                 std::string value;
 161                 ch = next();
 162                 if (ch != '"')
 163                 {
 164                         throw CoreException("Invalid character in value of <" + tag->tag + ":" + key + ">");
 165                 }
 166                 while (1)
 167                 {
 168                         ch = next();
 169                         if (ch == '&')
 170                         {
 171                                 std::string varname;
 172                                 while (1)
 173                                 {
 174                                         ch = next();
 175                                         if (isalnum(ch))
 176                                                 varname.push_back(ch);
 177                                         else if (ch == ';')
 178                                                 break;
 179                                         else
 180                                         {
 181                                                 stack.errstr << "Invalid XML entity name in value of <" + tag->tag + ":" + key + ">\n"
 182                                                         << "To include an ampersand or quote, use &amp; or &quot;\n";
 183                                                 throw CoreException("Parse error");
 184                                         }
 185                                 }
 186                                 std::map<std::string, std::string>::iterator var = stack.vars.find(varname);
 187                                 if (var == stack.vars.end())
 188                                         throw CoreException("Undefined XML entity reference '&" + varname + ";'");
 189                                 value.append(var->second);
 190                         }
 191                         else if (ch == '"')
 192                                 break;
 193                         value.push_back(ch);
 194                 }
 195                 tag->items.push_back(KeyVal(key, value));
 196                 return true;
 197         }
 198
 199         void dotag()
 200         {
 201                 last_tag = current;
 202                 std::string name;
 203                 nextword(name);
 204
 205                 int spc = next();
 206                 if (spc == '>')
 207                         unget(spc);
 208                 else if (!isspace(spc))
 209                         throw CoreException("Invalid character in tag name");
 210
 211                 if (name.empty())
 212                         throw CoreException("Empty tag name");
 213
 214                 tag = new ConfigTag(name, current.filename, current.line);
 215
 216                 while (kv());
 217
 218                 if (name == "include")
 219                 {
 220                         stack.DoInclude(tag, flags);
 221                 }
 222                 else if (name == "define")
 223                 {
 224                         std::string varname = tag->getString("name");
 225                         std::string value = tag->getString("value");
 226                         if (varname.empty())
 227                                 throw CoreException("Variable definition must include variable name");
 228                         stack.vars[varname] = value;
 229                 }
 230                 else
 231                 {
 232                         stack.output.insert(std::make_pair(name, tag));
 233                 }
 234                 // this is not a leak; reference<> takes care of the delete
 235                 tag = NULL;
 236         }
 237
 238         bool outer_parse()
 239         {
 240                 try
 241                 {
 242                         while (1)
 243                         {
 244                                 int ch = next(true);
 245                                 switch (ch)
 246                                 {
 247                                         case EOF:
 248                                                 // this is the one place where an EOF is not an error
 249                                                 return true;
 250                                         case '#':
 251                                                 comment();
 252                                                 break;
 253                                         case '<':
 254                                                 dotag();
 255                                                 break;
 256                                         case ' ':
 257                                         case '\r':
 258                                         case '\t':
 259                                         case '\n':
 260                                                 break;
 261                                         case 0xFE:
 262                                         case 0xFF:
 263                                                 stack.errstr << "Do not save your files as UTF-16; use ASCII!\n";
 264                                         default:
 265                                                 throw CoreException("Syntax error - start of tag expected");
 266                                 }
 267                         }
 268                 }
 269                 catch (CoreException& err)
 270                 {
 271                         stack.errstr << err.GetReason() << " at " << current.str();
 272                         if (tag)
 273                                 stack.errstr << " (inside tag " << tag->tag << " at line " << tag->src_line << ")\n";
 274                         else
 275                                 stack.errstr << " (last tag was on line " << last_tag.line << ")\n";
 276                 }
 277                 return false;
 278         }
 279 };
 280
 281 void ParseStack::DoInclude(ConfigTag* tag, int flags)
 282 {
 283         if (flags & FLAG_NO_INC)
 284                 throw CoreException("Invalid <include> tag in file included with noinclude=\"yes\"");
 285         std::string name;
 286         if (tag->readString("file", name))
 287         {
 288                 if (tag->getBool("noinclude", false))
 289                         flags |= FLAG_NO_INC;
 290                 if (tag->getBool("noexec", false))
 291                         flags |= FLAG_NO_EXEC;
 292                 if (!ParseFile(name, flags))
 293                         throw CoreException("Included");
 294         }
 295         else if (tag->readString("executable", name))
 296         {
 297                 if (flags & FLAG_NO_EXEC)
 298                         throw CoreException("Invalid <include:executable> tag in file included with noexec=\"yes\"");
 299                 if (tag->getBool("noinclude", false))
 300                         flags |= FLAG_NO_INC;
 301                 if (tag->getBool("noexec", true))
 302                         flags |= FLAG_NO_EXEC;
 303                 if (!ParseExec(name, flags))
 304                         throw CoreException("Included");
 305         }
 306 }
 307
 308 /** RAII wrapper on FILE* to close files on exceptions */
 309 struct FileWrapper
 310 {
 311         FILE* const f;
 312         FileWrapper(FILE* file) : f(file) {}
 313         operator bool() { return f; }
 314         operator FILE*() { return f; }
 315         ~FileWrapper()
 316         {
 317                 if (f)
 318                         fclose(f);
 319         }
 320 };
 321
 322 bool ParseStack::ParseFile(const std::string& name, int flags)
 323 {
 324         ServerInstance->Logs->Log("CONFIG", DEBUG, "Reading file %s", name.c_str());
 325         for (unsigned int t = 0; t < reading.size(); t++)
 326         {
 327                 if (std::string(name) == reading[t])
 328                 {
 329                         throw CoreException("File " + name + " is included recursively (looped inclusion)");
 330                 }
 331         }
 332
 333         /* It's not already included, add it to the list of files we've loaded */
 334
 335         FileWrapper file(fopen(name.c_str(), "r"));
 336         if (!file)
 337                 throw CoreException("Could not read \"" + name + "\" for include");
 338
 339         reading.push_back(name);
 340         Parser p(*this, flags, file, name);
 341         bool ok = p.outer_parse();
 342         reading.pop_back();
 343         return ok;
 344 }
 345
 346 bool ParseStack::ParseExec(const std::string& name, int flags)
 347 {
 348         ServerInstance->Logs->Log("CONFIG", DEBUG, "Reading executable %s", name.c_str());
 349         for (unsigned int t = 0; t < reading.size(); t++)
 350         {
 351                 if (std::string(name) == reading[t])
 352                 {
 353                         throw CoreException("Executable " + name + " is included recursively (looped inclusion)");
 354                 }
 355         }
 356
 357         /* It's not already included, add it to the list of files we've loaded */
 358
 359         FileWrapper file(popen(name.c_str(), "r"));
 360         if (!file)
 361                 throw CoreException("Could not open executable \"" + name + "\" for include");
 362
 363         reading.push_back(name);
 364         Parser p(*this, flags, file, name);
 365         bool ok = p.outer_parse();
 366         reading.pop_back();
 367         return ok;
 368 }
 369
 370 /////////////////////////////////////////////////////////////////////////////
 371
 372 ServerConfig::ServerConfig()
 373 {
 374         WhoWasGroupSize = WhoWasMaxGroups = WhoWasMaxKeep = 0;
 375         log_file = NULL;
 376         NoUserDns = forcedebug = OperSpyWhois = nofork = HideBans = HideSplits = UndernetMsgPrefix = false;
 377         CycleHosts = writelog = AllowHalfop = InvBypassModes = true;
 378         dns_timeout = DieDelay = 5;
 379         MaxTargets = 20;
 380         NetBufferSize = 10240;
 381         SoftLimit = ServerInstance->SE->GetMaxFds();
 382         MaxConn = SOMAXCONN;
 383         MaxWhoResults = 0;
 384         debugging = 0;
 385         MaxChans = 20;
 386         OperMaxChans = 30;
 387         c_ipv4_range = 32;
 388         c_ipv6_range = 128;
 389 }
 390
 391 void ServerConfig::Update005()
 392 {
 393         std::stringstream out(data005);
 394         std::string token;
 395         std::string line5;
 396         int token_counter = 0;
 397         isupport.clear();
 398         while (out >> token)
 399         {
 400                 line5 = line5 + token + " ";
 401                 token_counter++;
 402                 if (token_counter >= 13)
 403                 {
 404                         char buf[MAXBUF];
 405                         snprintf(buf, MAXBUF, "%s:are supported by this server", line5.c_str());
 406                         isupport.push_back(buf);
 407                         line5.clear();
 408                         token_counter = 0;
 409                 }
 410         }
 411         if (!line5.empty())
 412         {
 413                 char buf[MAXBUF];
 414                 snprintf(buf, MAXBUF, "%s:are supported by this server", line5.c_str());
 415                 isupport.push_back(buf);
 416         }
 417 }
 418
 419 void ServerConfig::Send005(User* user)
 420 {
 421         for (std::vector<std::string>::iterator line = ServerInstance->Config->isupport.begin(); line != ServerInstance->Config->isupport.end(); line++)
 422                 user->WriteNumeric(RPL_ISUPPORT, "%s %s", user->nick.c_str(), line->c_str());
 423 }
 424
 425 static void ReqRead(ServerConfig* src, const std::string& tag, const std::string& key, std::string& dest)
 426 {
 427         ConfigTag* t = src->ConfValue(tag);
 428         if (!t || !t->readString(key, dest))
 429                 throw CoreException("You must specify a value for <" + tag + ":" + key + ">");
 430 }
 431
 432 template<typename T, typename V>
 433 static void range(T& value, V min, V max, V def, const char* msg)
 434 {
 435         if (value >= (T)min && value <= (T)max)
 436                 return;
 437         ServerInstance->Logs->Log("CONFIG", DEFAULT,
 438                 "WARNING: %s value of %ld is not between %ld and %ld; set to %ld.",
 439                 msg, (long)value, (long)min, (long)max, (long)def);
 440         value = def;
 441 }
 442
 443
 444 /* 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,
 445  * even in strerror(errno). They just return 'yes' or 'no' to an address without such detail as to whats WRONG with the address.
 446  * Because ircd users arent as technical as they used to be (;)) we are going to give more of a useful error message.
 447  */
 448 static void ValidIP(const std::string& ip, const std::string& key)
 449 {
 450         const char* p = ip.c_str();
 451         int num_dots = 0;
 452         int num_seps = 0;
 453         int not_numbers = false;
 454         int not_hex = false;
 455
 456         if (*p)
 457         {
 458                 if (*p == '.')
 459                         throw CoreException("The value of "+key+" is not an IP address");
 460
 461                 for (const char* ptr = p; *ptr; ++ptr)
 462                 {
 463                         if (*ptr != ':' && *ptr != '.')
 464                         {
 465                                 if (*ptr < '0' || *ptr > '9')
 466                                         not_numbers = true;
 467                                 if ((*ptr < '0' || *ptr > '9') && (toupper(*ptr) < 'A' || toupper(*ptr) > 'F'))
 468                                         not_hex = true;
 469                         }
 470                         switch (*ptr)
 471                         {
 472                                 case ' ':
 473                                         throw CoreException("The value of "+key+" is not an IP address");
 474                                 case '.':
 475                                         num_dots++;
 476                                 break;
 477                                 case ':':
 478                                         num_seps++;
 479                                 break;
 480                         }
 481                 }
 482
 483                 if (num_dots > 3)
 484                         throw CoreException("The value of "+key+" is an IPv4 address with too many fields!");
 485
 486                 if (num_seps > 8)
 487                         throw CoreException("The value of "+key+" is an IPv6 address with too many fields!");
 488
 489                 if (num_seps == 0 && num_dots < 3)
 490                         throw CoreException("The value of "+key+" looks to be a malformed IPv4 address");
 491
 492                 if (num_seps == 0 && num_dots == 3 && not_numbers)
 493                         throw CoreException("The value of "+key+" contains non-numeric characters in an IPv4 address");
 494
 495                 if (num_seps != 0 && not_hex)
 496                         throw CoreException("The value of "+key+" contains non-hexdecimal characters in an IPv6 address");
 497
 498                 if (num_seps != 0 && num_dots != 3 && num_dots != 0)
 499                         throw CoreException("The value of "+key+" is a malformed IPv6 4in6 address");
 500         }
 501 }
 502
 503 static void ValidHost(const std::string& p, const std::string& msg)
 504 {
 505         int num_dots = 0;
 506         if (p.empty() || p[0] == '.')
 507                 throw CoreException("The value of "+msg+" is not a valid hostname");
 508         for (unsigned int i=0;i < p.length();i++)
 509         {
 510                 switch (p[i])
 511                 {
 512                         case ' ':
 513                                 throw CoreException("The value of "+msg+" is not a valid hostname");
 514                         case '.':
 515                                 num_dots++;
 516                         break;
 517                 }
 518         }
 519         if (num_dots == 0)
 520                 throw CoreException("The value of "+msg+" is not a valid hostname");
 521 }
 522
 523 // Specialized validators
 524
 525 bool ServerConfig::ApplyDisabledCommands(const std::string& data)
 526 {
 527         std::stringstream dcmds(data);
 528         std::string thiscmd;
 529
 530         /* Enable everything first */
 531         for (Commandtable::iterator x = ServerInstance->Parser->cmdlist.begin(); x != ServerInstance->Parser->cmdlist.end(); x++)
 532                 x->second->Disable(false);
 533
 534         /* Now disable all the ones which the user wants disabled */
 535         while (dcmds >> thiscmd)
 536         {
 537                 Commandtable::iterator cm = ServerInstance->Parser->cmdlist.find(thiscmd);
 538                 if (cm != ServerInstance->Parser->cmdlist.end())
 539                 {
 540                         cm->second->Disable(true);
 541                 }
 542         }
 543         return true;
 544 }
 545
 546 #ifdef WINDOWS
 547 // Note: the windows validator is in win32wrapper.cpp
 548 void FindDNS(std::string& server);
 549 #else
 550 static void FindDNS(std::string& server)
 551 {
 552         if (!server.empty())
 553                 return;
 554
 555         // attempt to look up their nameserver from /etc/resolv.conf
 556         ServerInstance->Logs->Log("CONFIG",DEFAULT,"WARNING: <dns:server> not defined, attempting to find working server in /etc/resolv.conf...");
 557
 558         std::ifstream resolv("/etc/resolv.conf");
 559
 560         while (resolv >> server)
 561         {
 562                 if (server == "nameserver")
 563                 {
 564                         resolv >> server;
 565                         ServerInstance->Logs->Log("CONFIG",DEFAULT,"<dns:server> set to '%s' as first resolver in /etc/resolv.conf.",server.c_str());
 566                         return;
 567                 }
 568         }
 569
 570         ServerInstance->Logs->Log("CONFIG",DEFAULT,"/etc/resolv.conf contains no viable nameserver entries! Defaulting to nameserver '127.0.0.1'!");
 571         server = "127.0.0.1";
 572 }
 573 #endif
 574
 575 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
 576 {
 577         for(int i=0;; ++i)
 578         {
 579                 ConfigTag* ctag = conf->ConfValue(tag, i);
 580                 if (!ctag)
 581                         break;
 582                 std::string mask;
 583                 if (!ctag->readString(key, mask))
 584                         throw CoreException("<"+tag+":"+key+"> missing at " + ctag->getTagLocation());
 585                 std::string reason = ctag->getString("reason", "<Config>");
 586                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
 587                 if (!ServerInstance->XLines->AddLine(xl, NULL))
 588                         delete xl;
 589         }
 590 }
 591
 592 typedef std::map<std::string, ConfigTag*> LocalIndex;
 593 void ServerConfig::CrossCheckOperClassType()
 594 {
 595         LocalIndex operclass;
 596         for (int i = 0;; ++i)
 597         {
 598                 ConfigTag* tag = ConfValue("class", i);
 599                 if (!tag)
 600                         break;
 601                 std::string name = tag->getString("name");
 602                 if (name.empty())
 603                         throw CoreException("<class:name> missing from tag at " + tag->getTagLocation());
 604                 operclass[name] = tag;
 605         }
 606         for (int i = 0;; ++i)
 607         {
 608                 ConfigTag* tag = ConfValue("type", i);
 609                 if (!tag)
 610                         break;
 611
 612                 std::string name = tag->getString("name");
 613                 if (name.empty())
 614                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
 615
 616                 if (!ServerInstance->IsNick(name.c_str(), Limits.NickMax))
 617                         throw CoreException("<type:name> is invalid (value '" + name + "')");
 618
 619                 OperInfo* ifo = new OperInfo;
 620                 oper_blocks[" " + name] = ifo;
 621                 ifo->type_block = tag;
 622
 623                 std::string classname;
 624                 irc::spacesepstream str(tag->getString("classes"));
 625                 while (str.GetToken(classname))
 626                 {
 627                         LocalIndex::iterator cls = operclass.find(classname);
 628                         if (cls == operclass.end())
 629                                 throw CoreException("Oper type " + name + " has missing class " + classname);
 630                         ifo->class_blocks.push_back(cls->second);
 631                 }
 632         }
 633
 634         for (int i = 0;; ++i)
 635         {
 636                 ConfigTag* tag = ConfValue("oper", i);
 637                 if (!tag)
 638                         break;
 639
 640                 std::string name = tag->getString("name");
 641                 if (name.empty())
 642                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
 643
 644                 std::string type = tag->getString("type");
 645                 OperIndex::iterator tblk = oper_blocks.find(" " + type);
 646                 if (tblk == oper_blocks.end())
 647                         throw CoreException("Oper block " + name + " has missing type " + type);
 648                 if (oper_blocks.find(name) != oper_blocks.end())
 649                         throw CoreException("Duplicate oper block with name " + name);
 650
 651                 OperInfo* ifo = new OperInfo;
 652                 ifo->name = type;
 653                 ifo->oper_block = tag;
 654                 ifo->type_block = tblk->second->type_block;
 655                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
 656                 oper_blocks[name] = ifo;
 657         }
 658 }
 659
 660 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
 661 {
 662         typedef std::map<std::string, ConnectClass*> ClassMap;
 663         ClassMap oldBlocksByMask;
 664         if (current)
 665         {
 666                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
 667                 {
 668                         ConnectClass* c = *i;
 669                         std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
 670                         typeMask += c->host;
 671                         oldBlocksByMask[typeMask] = c;
 672                 }
 673         }
 674
 675         ClassMap newBlocksByMask;
 676         std::map<std::string, int> names;
 677
 678         bool try_again = true;
 679         for(int tries=0; try_again; tries++)
 680         {
 681                 try_again = false;
 682                 for(unsigned int i=0;; i++)
 683                 {
 684                         ConfigTag* tag = ConfValue("connect", i);
 685                         if (!tag)
 686                                 break;
 687                         if (Classes.size() <= i)
 688                                 Classes.resize(i+1);
 689                         if (Classes[i])
 690                                 continue;
 691
 692                         ConnectClass* parent = NULL;
 693                         std::string parentName = tag->getString("parent");
 694                         if (!parentName.empty())
 695                         {
 696                                 std::map<std::string,int>::iterator parentIter = names.find(parentName);
 697                                 if (parentIter == names.end())
 698                                 {
 699                                         try_again = true;
 700                                         // couldn't find parent this time. If it's the last time, we'll never find it.
 701                                         if (tries == 50)
 702                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block " + ConvToStr(i));
 703                                         continue;
 704                                 }
 705                                 parent = Classes[parentIter->second];
 706                         }
 707
 708                         std::string name = tag->getString("name");
 709                         if (!name.empty())
 710                         {
 711                                 if (names.find(name) != names.end())
 712                                         throw CoreException("Two connect classes with name \"" + name + "\" defined!");
 713                                 names[name] = i;
 714                         }
 715
 716                         std::string mask, typeMask;
 717                         char type;
 718
 719                         if (tag->readString("allow", mask, false))
 720                         {
 721                                 type = CC_ALLOW;
 722                                 typeMask = 'a' + mask;
 723                         }
 724                         else if (tag->readString("deny", mask, false))
 725                         {
 726                                 type = CC_DENY;
 727                                 typeMask = 'd' + mask;
 728                         }
 729                         else
 730                         {
 731                                 throw CoreException("Connect class must have an allow or deny mask at " + tag->getTagLocation());
 732                         }
 733                         ClassMap::iterator dupMask = newBlocksByMask.find(typeMask);
 734                         if (dupMask != newBlocksByMask.end())
 735                                 throw CoreException("Two connect classes cannot have the same mask (" + mask + ")");
 736
 737                         ConnectClass* me = parent ?
 738                                 new ConnectClass(tag, type, mask, *parent) :
 739                                 new ConnectClass(tag, type, mask);
 740
 741                         if (!name.empty())
 742                                 me->name = name;
 743
 744                         tag->readString("password", me->pass);
 745                         tag->readString("hash", me->hash);
 746                         me->registration_timeout = tag->getInt("timeout", me->registration_timeout);
 747                         me->pingtime = tag->getInt("pingfreq", me->pingtime);
 748                         std::string sendq;
 749                         if (tag->readString("sendq", sendq))
 750                         {
 751                                 // attempt to guess a good hard/soft sendq from a single value
 752                                 long value = atol(sendq.c_str());
 753                                 if (value > 16384)
 754                                         me->softsendqmax = value / 16;
 755                                 else
 756                                         me->softsendqmax = value;
 757                                 me->hardsendqmax = value * 8;
 758                         }
 759                         me->softsendqmax = tag->getInt("softsendq", me->softsendqmax);
 760                         me->hardsendqmax = tag->getInt("hardsendq", me->hardsendqmax);
 761                         me->recvqmax = tag->getInt("recvq", me->recvqmax);
 762                         me->penaltythreshold = tag->getInt("threshold", me->penaltythreshold);
 763                         me->maxlocal = tag->getInt("localmax", me->maxlocal);
 764                         me->maxglobal = tag->getInt("globalmax", me->maxglobal);
 765                         me->port = tag->getInt("port", me->port);
 766                         me->maxchans = tag->getInt("maxchans", me->maxchans);
 767                         me->limit = tag->getInt("limit", me->limit);
 768
 769                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
 770                         if (oldMask != oldBlocksByMask.end())
 771                         {
 772                                 ConnectClass* old = oldMask->second;
 773                                 oldBlocksByMask.erase(oldMask);
 774                                 old->Update(me);
 775                                 delete me;
 776                                 me = old;
 777                         }
 778                         newBlocksByMask[typeMask] = me;
 779                         Classes[i] = me;
 780                 }
 781         }
 782 }
 783
 784 /** Represents a deprecated configuration tag.
 785  */
 786 struct Deprecated
 787 {
 788         /** Tag name
 789          */
 790         const char* tag;
 791         /** Tag value
 792          */
 793         const char* value;
 794         /** Reason for deprecation
 795          */
 796         const char* reason;
 797 };
 798
 799 static const Deprecated ChangedConfig[] = {
 800         {"options", "hidelinks",                "has been moved to <security:hidelinks> as of 1.2a3"},
 801         {"options", "hidewhois",                "has been moved to <security:hidewhois> as of 1.2a3"},
 802         {"options", "userstats",                "has been moved to <security:userstats> as of 1.2a3"},
 803         {"options", "customversion",    "has been moved to <security:customversion> as of 1.2a3"},
 804         {"options", "hidesplits",               "has been moved to <security:hidesplits> as of 1.2a3"},
 805         {"options", "hidebans",         "has been moved to <security:hidebans> as of 1.2a3"},
 806         {"options", "hidekills",                "has been moved to <security:hidekills> as of 1.2a3"},
 807         {"options", "operspywhois",             "has been moved to <security:operspywhois> as of 1.2a3"},
 808         {"options", "announceinvites",  "has been moved to <security:announceinvites> as of 1.2a3"},
 809         {"options", "hidemodes",                "has been moved to <security:hidemodes> as of 1.2a3"},
 810         {"options", "maxtargets",               "has been moved to <security:maxtargets> as of 1.2a3"},
 811         {"options",     "nouserdns",            "has been moved to <performance:nouserdns> as of 1.2a3"},
 812         {"options",     "maxwho",               "has been moved to <performance:maxwho> as of 1.2a3"},
 813         {"options",     "softlimit",            "has been moved to <performance:softlimit> as of 1.2a3"},
 814         {"options", "somaxconn",                "has been moved to <performance:somaxconn> as of 1.2a3"},
 815         {"options", "netbuffersize",    "has been moved to <performance:netbuffersize> as of 1.2a3"},
 816         {"options", "maxwho",           "has been moved to <performance:maxwho> as of 1.2a3"},
 817         {"options",     "loglevel",             "1.2 does not use the loglevel value. Please define <log> tags instead."},
 818         {"die",     "value",            "has always been deprecated"},
 819 };
 820
 821 void ServerConfig::Fill()
 822 {
 823         ReqRead(this, "server", "name", ServerName);
 824         ReqRead(this, "power", "diepass", diepass);
 825         ReqRead(this, "power", "restartpass", restartpass);
 826
 827         ConfigTag* options = ConfValue("options");
 828         ConfigTag* security = ConfValue("security");
 829         powerhash = ConfValue("power")->getString("hash");
 830         DieDelay = ConfValue("power")->getInt("pause");
 831         PrefixQuit = options->getString("prefixquit");
 832         SuffixQuit = options->getString("suffixquit");
 833         FixedQuit = options->getString("fixedquit");
 834         PrefixPart = options->getString("prefixpart");
 835         SuffixPart = options->getString("suffixpart");
 836         FixedPart = options->getString("fixedpart");
 837         SoftLimit = ConfValue("performance")->getInt("softlimit", ServerInstance->SE->GetMaxFds());
 838         MaxConn = ConfValue("performance")->getInt("somaxconn", SOMAXCONN);
 839         MoronBanner = options->getString("moronbanner", "You're banned!");
 840         ServerDesc = ConfValue("server")->getString("description", "Configure Me");
 841         Network = ConfValue("server")->getString("network", "Network");
 842         sid = ConfValue("server")->getString("id", "");
 843         AdminName = ConfValue("admin")->getString("name", "");
 844         AdminEmail = ConfValue("admin")->getString("email", "null@example.com");
 845         AdminNick = ConfValue("admin")->getString("nick", "admin");
 846         ModPath = ConfValue("path")->getString("moduledir", MOD_PATH);
 847         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240);
 848         MaxWhoResults = ConfValue("performance")->getInt("maxwho", 1024);
 849         dns_timeout = ConfValue("dns")->getInt("timeout", 5);
 850         DisabledCommands = ConfValue("disabled")->getString("commands", "");
 851         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
 852         SetUser = security->getString("runasuser");
 853         SetGroup = security->getString("runasgroup");
 854         UserStats = security->getString("userstats");
 855         CustomVersion = security->getString("customversion");
 856         HideSplits = security->getBool("hidesplits");
 857         HideBans = security->getBool("hidebans");
 858         HideWhoisServer = security->getString("hidewhois");
 859         HideKillsServer = security->getString("hidekills");
 860         OperSpyWhois = security->getBool("operspywhois");
 861         RestrictBannedUsers = security->getBool("restrictbannedusers", true);
 862         GenericOper = security->getBool("genericoper");
 863         NoUserDns = ConfValue("performance")->getBool("nouserdns");
 864         SyntaxHints = options->getBool("syntaxhints");
 865         CycleHosts = options->getBool("cyclehosts");
 866         UndernetMsgPrefix = options->getBool("ircumsgprefix");
 867         FullHostInTopic = options->getBool("hostintopic");
 868         MaxTargets = security->getInt("maxtargets", 20);
 869         DefaultModes = options->getString("defaultmodes", "nt");
 870         PID = ConfValue("pid")->getString("file");
 871         WhoWasGroupSize = ConfValue("whowas")->getInt("groupsize");
 872         WhoWasMaxGroups = ConfValue("whowas")->getInt("maxgroups");
 873         WhoWasMaxKeep = ServerInstance->Duration(ConfValue("whowas")->getString("maxkeep"));
 874         DieValue = ConfValue("die")->getString("value");
 875         MaxChans = ConfValue("channels")->getInt("users");
 876         OperMaxChans = ConfValue("channels")->getInt("opers");
 877         c_ipv4_range = ConfValue("cidr")->getInt("ipv4clone");
 878         c_ipv6_range = ConfValue("cidr")->getInt("ipv6clone");
 879         Limits.NickMax = ConfValue("limits")->getInt("maxnick", 32);
 880         Limits.ChanMax = ConfValue("limits")->getInt("maxchan", 64);
 881         Limits.MaxModes = ConfValue("limits")->getInt("maxmodes", 20);
 882         Limits.IdentMax = ConfValue("limits")->getInt("maxident", 11);
 883         Limits.MaxQuit = ConfValue("limits")->getInt("maxquit", 255);
 884         Limits.MaxTopic = ConfValue("limits")->getInt("maxtopic", 307);
 885         Limits.MaxKick = ConfValue("limits")->getInt("maxkick", 255);
 886         Limits.MaxGecos = ConfValue("limits")->getInt("maxgecos", 128);
 887         Limits.MaxAway = ConfValue("limits")->getInt("maxaway", 200);
 888         InvBypassModes = options->getBool("invitebypassmodes", true);
 889
 890         range(SoftLimit, 10, ServerInstance->SE->GetMaxFds(), ServerInstance->SE->GetMaxFds(), "<performance:softlimit>");
 891         range(MaxConn, 0, SOMAXCONN, SOMAXCONN, "<performance:somaxconn>");
 892         range(MaxTargets, 1, 31, 20, "<security:maxtargets>");
 893         range(NetBufferSize, 1024, 65534, 10240, "<performance:netbuffersize>");
 894         range(MaxWhoResults, 1, 65535, 1024, "<performace:maxwho>");
 895         range(WhoWasGroupSize, 0, 10000, 10, "<whowas:groupsize>");
 896         range(WhoWasMaxGroups, 0, 1000000, 10240, "<whowas:maxgroups>");
 897         range(WhoWasMaxKeep, 3600, INT_MAX, 3600, "<whowas:maxkeep>");
 898
 899         ValidIP(DNSServer, "<dns:server>");
 900         ValidHost(ServerName, "<server:name>");
 901         if (!sid.empty() && !ServerInstance->IsSID(sid))
 902                 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.");
 903
 904         for (int i = 0;; ++i)
 905         {
 906                 ConfigTag* tag = ConfValue("uline", i);
 907                 if (!tag)
 908                         break;
 909                 std::string server;
 910                 if (!tag->readString("server", server))
 911                         throw CoreException("<uline> tag missing server at " + tag->getTagLocation());
 912                 ulines[assign(server)] = tag->getBool("silent");
 913         }
 914
 915         for(int i=0;; ++i)
 916         {
 917                 ConfigTag* tag = ConfValue("banlist", i);
 918                 if (!tag)
 919                         break;
 920                 std::string chan;
 921                 if (!tag->readString("chan", chan))
 922                         throw CoreException("<banlist> tag missing chan at " + tag->getTagLocation());
 923                 maxbans[chan] = tag->getInt("limit");
 924         }
 925
 926         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
 927         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
 928         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
 929         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
 930
 931         memset(DisabledUModes, 0, sizeof(DisabledUModes));
 932         for (const unsigned char* p = (const unsigned char*)ConfValue("disabled")->getString("usermodes").c_str(); *p; ++p)
 933         {
 934                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid usermode ")+(char)*p+" was found.");
 935                 DisabledUModes[*p - 'A'] = 1;
 936         }
 937
 938         memset(DisabledCModes, 0, sizeof(DisabledCModes));
 939         for (const unsigned char* p = (const unsigned char*)ConfValue("disabled")->getString("chanmodes").c_str(); *p; ++p)
 940         {
 941                 if (*p < 'A' || *p > ('A' + 64)) throw CoreException(std::string("Invalid chanmode ")+(char)*p+" was found.");
 942                 DisabledCModes[*p - 'A'] = 1;
 943         }
 944
 945         memset(HideModeLists, 0, sizeof(HideModeLists));
 946         for (const unsigned char* p = (const unsigned char*)ConfValue("security")->getString("hidemodes").c_str(); *p; ++p)
 947                 HideModeLists[*p] = true;
 948
 949         std::string v = security->getString("announceinvites");
 950
 951         if (v == "ops")
 952                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_OPS;
 953         else if (v == "all")
 954                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_ALL;
 955         else if (v == "dynamic")
 956                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_DYNAMIC;
 957         else
 958                 AnnounceInvites = ServerConfig::INVITE_ANNOUNCE_NONE;
 959
 960         Limits.Finalise();
 961 }
 962
 963 /* These tags MUST occur and must ONLY occur once in the config file */
 964 static const char* const Once[] = { "server", "admin", "files", "power", "options" };
 965
 966 // WARNING: it is not safe to use most of the codebase in this function, as it
 967 // will run in the config reader thread
 968 void ServerConfig::Read()
 969 {
 970         /* Load and parse the config file, if there are any errors then explode */
 971
 972         ParseStack stack(this);
 973         try
 974         {
 975                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
 976         }
 977         catch (CoreException& err)
 978         {
 979                 valid = false;
 980                 errstr << err.GetReason();
 981         }
 982         if (valid)
 983         {
 984                 ReadFile(MOTD, ConfValue("files")->getString("motd"));
 985                 ReadFile(RULES, ConfValue("files")->getString("rules"));
 986                 DNSServer = ConfValue("dns")->getString("server");
 987                 FindDNS(DNSServer);
 988         }
 989 }
 990
 991 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
 992 {
 993         valid = true;
 994
 995         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
 996         try
 997         {
 998                 /* Check we dont have more than one of singular tags, or any of them missing
 999                  */
1000                 for (int Index = 0; Index * sizeof(*Once) < sizeof(Once); Index++)
1001                 {
1002                         std::string tag = Once[Index];
1003                         if (!ConfValue(tag))
1004                                 throw CoreException("You have not defined a <"+tag+"> tag, this is required.");
1005                         if (ConfValue(tag, 1))
1006                         {
1007                                 errstr << "You have more than one <" << tag << "> tag.\n"
1008                                         << "First occurrence at " << ConfValue(tag, 0)->getTagLocation()
1009                                         << "; second occurrence at " << ConfValue(tag, 1)->getTagLocation() << std::endl;
1010                         }
1011                 }
1012
1013                 for (int Index = 0; Index * sizeof(Deprecated) < sizeof(ChangedConfig); Index++)
1014                 {
1015                         std::string dummy;
1016                         if (ConfValue(ChangedConfig[Index].tag)->readString(ChangedConfig[Index].value, dummy, true))
1017                                 errstr << "Your configuration contains a deprecated value: <"
1018                                         << ChangedConfig[Index].tag << ":" << ChangedConfig[Index].value << "> - " << ChangedConfig[Index].reason
1019                                         << " (at " << ConfValue(ChangedConfig[Index].tag)->getTagLocation() << ")\n";
1020                 }
1021
1022                 Fill();
1023
1024                 // Handle special items
1025                 CrossCheckOperClassType();
1026                 CrossCheckConnectBlocks(old);
1027         }
1028         catch (CoreException &ce)
1029         {
1030                 errstr << ce.GetReason();
1031         }
1032
1033         // write once here, to try it out and make sure its ok
1034         ServerInstance->WritePID(this->PID);
1035
1036         /*
1037          * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
1038          */
1039         if (old)
1040         {
1041                 this->ServerName = old->ServerName;
1042                 this->sid = old->sid;
1043                 this->argv = old->argv;
1044                 this->argc = old->argc;
1045
1046                 // Same for ports... they're bound later on first run.
1047                 FailedPortList pl;
1048                 ServerInstance->BindPorts(pl);
1049                 if (pl.size())
1050                 {
1051                         errstr << "Not all your client ports could be bound.\nThe following port(s) failed to bind:\n";
1052
1053                         int j = 1;
1054                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
1055                         {
1056                                 char buf[MAXBUF];
1057                                 snprintf(buf, MAXBUF, "%d.   Address: %s   Reason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
1058                                 errstr << buf;
1059                         }
1060                 }
1061         }
1062
1063         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
1064
1065         valid = errstr.str().empty();
1066         if (!valid)
1067                 ServerInstance->Logs->Log("CONFIG",DEFAULT, "There were errors in your configuration file:");
1068
1069         while (errstr.good())
1070         {
1071                 std::string line;
1072                 getline(errstr, line, '\n');
1073                 if (!line.empty())
1074                 {
1075                         if (user)
1076                                 user->WriteServ("NOTICE %s :*** %s", user->nick.c_str(), line.c_str());
1077                         else
1078                                 ServerInstance->SNO->WriteGlobalSno('a', line);
1079                 }
1080
1081                 if (!old)
1082                 {
1083                         // Starting up, so print it out so it's seen. XXX this is a bit of a hack.
1084                         printf("%s\n", line.c_str());
1085                 }
1086         }
1087
1088         errstr.clear();
1089         errstr.str(std::string());
1090
1091         /* No old configuration -> initial boot, nothing more to do here */
1092         if (!old)
1093         {
1094                 if (!valid)
1095                 {
1096                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
1097                 }
1098
1099                 if (ConfValue("options")->getBool("allowhalfop"))
1100                         ServerInstance->Modes->AddMode(new ModeChannelHalfOp);
1101
1102                 return;
1103         }
1104
1105         // If there were errors processing configuration, don't touch modules.
1106         if (!valid)
1107                 return;
1108
1109         ApplyModules(user);
1110
1111         if (user)
1112                 user->WriteServ("NOTICE %s :*** Successfully rehashed server.", user->nick.c_str());
1113         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
1114 }
1115
1116 void ServerConfig::ApplyModules(User* user)
1117 {
1118         bool AllowHalfOp = ConfValue("options")->getBool("allowhalfop");
1119         ModeHandler* mh = ServerInstance->Modes->FindMode('h', MODETYPE_CHANNEL);
1120         if (AllowHalfOp && !mh) {
1121                 ServerInstance->Logs->Log("CONFIG", DEFAULT, "Enabling halfop mode.");
1122                 mh = new ModeChannelHalfOp;
1123                 ServerInstance->Modes->AddMode(mh);
1124         } else if (!AllowHalfOp && mh) {
1125                 ServerInstance->Logs->Log("CONFIG", DEFAULT, "Disabling halfop mode.");
1126                 ServerInstance->Modes->DelMode(mh);
1127                 delete mh;
1128         }
1129
1130         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
1131         if (whowas)
1132                 WhowasRequest(NULL, whowas, WhowasRequest::WHOWAS_PRUNE).Send();
1133
1134         const std::vector<std::string> v = ServerInstance->Modules->GetAllModuleNames(0);
1135         std::vector<std::string> added_modules;
1136         std::set<std::string> removed_modules(v.begin(), v.end());
1137
1138         for(int i=0; ; i++)
1139         {
1140                 ConfigTag* tag = ConfValue("module", i);
1141                 if (!tag)
1142                         break;
1143                 std::string name;
1144                 if (tag->readString("name", name))
1145                 {
1146                         // if this module is already loaded, the erase will succeed, so we need do nothing
1147                         // otherwise, we need to add the module (which will be done later)
1148                         if (removed_modules.erase(name) == 0)
1149                                 added_modules.push_back(name);
1150                 }
1151         }
1152
1153         for (std::set<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
1154         {
1155                 // Don't remove cmd_*.so, just remove m_*.so
1156                 if (removing->c_str()[0] == 'c')
1157                         continue;
1158                 Module* m = ServerInstance->Modules->Find(*removing);
1159                 if (m && ServerInstance->Modules->Unload(m))
1160                 {
1161                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s",removing->c_str());
1162
1163                         if (user)
1164                                 user->WriteNumeric(RPL_UNLOADEDMODULE, "%s %s :Module %s successfully unloaded.",user->nick.c_str(), removing->c_str(), removing->c_str());
1165                         else
1166                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", removing->c_str());
1167                 }
1168                 else
1169                 {
1170                         if (user)
1171                                 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());
1172                         else
1173                                  ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", removing->c_str(), ServerInstance->Modules->LastError().c_str());
1174                 }
1175         }
1176
1177         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
1178         {
1179                 if (ServerInstance->Modules->Load(adding->c_str()))
1180                 {
1181                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
1182                         if (user)
1183                                 user->WriteNumeric(RPL_LOADEDMODULE, "%s %s :Module %s successfully loaded.",user->nick.c_str(), adding->c_str(), adding->c_str());
1184                         else
1185                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
1186                 }
1187                 else
1188                 {
1189                         if (user)
1190                                 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());
1191                         else
1192                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
1193                 }
1194         }
1195 }
1196
1197 bool ServerConfig::StartsWithWindowsDriveLetter(const std::string &path)
1198 {
1199         return (path.length() > 2 && isalpha(path[0]) && path[1] == ':');
1200 }
1201
1202 ConfigTag* ServerConfig::ConfValue(const std::string &tag, int offset)
1203 {
1204         ConfigDataHash::size_type pos = offset;
1205         if (pos >= config_data.count(tag))
1206                 return NULL;
1207
1208         ConfigDataHash::iterator iter = config_data.find(tag);
1209
1210         for(int i = 0; i < offset; i++)
1211                 iter++;
1212
1213         return iter->second;
1214 }
1215
1216 bool ConfigTag::readString(const std::string& key, std::string& value, bool allow_lf)
1217 {
1218         if (!this)
1219                 return false;
1220         for(std::vector<KeyVal>::iterator j = items.begin(); j != items.end(); ++j)
1221         {
1222                 if(j->first != key)
1223                         continue;
1224                 value = j->second;
1225                 if (!allow_lf && (value.find('\n') != std::string::npos))
1226                 {
1227                         ServerInstance->Logs->Log("CONFIG",DEFAULT, "Value of <" + tag + ":" + key + "> at " + getTagLocation() +
1228                                 " contains a linefeed, and linefeeds in this value are not permitted -- stripped to spaces.");
1229                         for (std::string::iterator n = value.begin(); n != value.end(); n++)
1230                                 if (*n == '\n')
1231                                         *n = ' ';
1232                 }
1233                 return true;
1234         }
1235         return false;
1236 }
1237
1238 std::string ConfigTag::getString(const std::string& key, const std::string& def)
1239 {
1240         std::string res = def;
1241         readString(key, res);
1242         return res;
1243 }
1244
1245 long ConfigTag::getInt(const std::string &key, long def)
1246 {
1247         std::string result;
1248         if(!readString(key, result))
1249                 return def;
1250
1251         const char* res_cstr = result.c_str();
1252         char* res_tail = NULL;
1253         long res = strtol(res_cstr, &res_tail, 0);
1254         if (res_tail == res_cstr)
1255                 return def;
1256         switch (toupper(*res_tail))
1257         {
1258                 case 'K':
1259                         res= res* 1024;
1260                         break;
1261                 case 'M':
1262                         res= res* 1024 * 1024;
1263                         break;
1264                 case 'G':
1265                         res= res* 1024 * 1024 * 1024;
1266                         break;
1267         }
1268         return res;
1269 }
1270
1271 double ConfigTag::getFloat(const std::string &key, double def)
1272 {
1273         std::string result;
1274         if (!readString(key, result))
1275                 return def;
1276         return strtod(result.c_str(), NULL);
1277 }
1278
1279 bool ConfigTag::getBool(const std::string &key, bool def)
1280 {
1281         std::string result;
1282         if(!readString(key, result))
1283                 return def;
1284
1285         return (result == "yes" || result == "true" || result == "1" || result == "on");
1286 }
1287
1288 std::string ConfigTag::getTagLocation()
1289 {
1290         return src_name + ":" + ConvToStr(src_line);
1291 }
1292
1293 std::string OperInfo::getConfig(const std::string& key)
1294 {
1295         std::string rv;
1296         if (type_block)
1297                 type_block->readString(key, rv);
1298         if (oper_block)
1299                 oper_block->readString(key, rv);
1300         return rv;
1301 }
1302
1303 /** Read the contents of a file located by `fname' into a file_cache pointed at by `F'.
1304  */
1305 bool ServerConfig::ReadFile(file_cache &F, const std::string& fname)
1306 {
1307         if (fname.empty())
1308                 return false;
1309
1310         char linebuf[MAXBUF];
1311
1312         F.clear();
1313
1314         FileWrapper file(fopen(fname.c_str(), "r"));
1315
1316         if (!file)
1317                 return false;
1318         while (!feof(file))
1319         {
1320                 if (fgets(linebuf, sizeof(linebuf), file))
1321                         linebuf[strlen(linebuf)-1] = 0;
1322                 else
1323                         *linebuf = 0;
1324
1325                 F.push_back(*linebuf ? linebuf : " ");
1326         }
1327
1328         return true;
1329 }
1330
1331 bool ServerConfig::FileExists(const char* file)
1332 {
1333         struct stat sb;
1334         if (stat(file, &sb) == -1)
1335                 return false;
1336
1337         if ((sb.st_mode & S_IFDIR) > 0)
1338                 return false;
1339
1340         FILE *input = fopen(file, "r");
1341         if (input == NULL)
1342                 return false;
1343         else
1344         {
1345                 fclose(input);
1346                 return true;
1347         }
1348 }
1349
1350 const char* ServerConfig::CleanFilename(const char* name)
1351 {
1352         const char* p = name + strlen(name);
1353         while ((p != name) && (*p != '/') && (*p != '\\')) p--;
1354         return (p != name ? ++p : p);
1355 }
1356
1357 std::string ServerConfig::GetSID()
1358 {
1359         return sid;
1360 }
1361
1362 void ConfigReaderThread::Run()
1363 {
1364         Config = new ServerConfig;
1365         Config->Read();
1366         done = true;
1367 }
1368
1369 void ConfigReaderThread::Finish()
1370 {
1371         ServerConfig* old = ServerInstance->Config;
1372         ServerInstance->Logs->Log("CONFIG",DEBUG,"Switching to new configuration...");
1373         ServerInstance->Logs->CloseLogs();
1374         ServerInstance->Config = this->Config;
1375         ServerInstance->Logs->OpenFileLogs();
1376         Config->Apply(old, TheUserUID);
1377
1378         if (Config->valid)
1379         {
1380                 /*
1381                  * Apply the changed configuration from the rehash.
1382                  *
1383                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
1384                  * thoroughly!!!
1385                  */
1386                 ServerInstance->XLines->CheckELines();
1387                 ServerInstance->XLines->CheckELines();
1388                 ServerInstance->XLines->ApplyLines();
1389                 ServerInstance->Res->Rehash();
1390                 ServerInstance->ResetMaxBans();
1391                 Config->ApplyDisabledCommands(Config->DisabledCommands);
1392                 User* user = TheUserUID.empty() ? ServerInstance->FindNick(TheUserUID) : NULL;
1393                 FOREACH_MOD(I_OnRehash, OnRehash(user));
1394                 ServerInstance->BuildISupport();
1395
1396                 delete old;
1397         }
1398         else
1399         {
1400                 // whoops, abort!
1401                 ServerInstance->Logs->CloseLogs();
1402                 ServerInstance->Config = old;
1403                 ServerInstance->Logs->OpenFileLogs();
1404                 delete this->Config;
1405         }
1406 }