src/inspircd_io.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 using namespace std;
  18
  19 #include "inspircd_config.h"
  20 #include <sys/time.h>
  21 #include <sys/resource.h>
  22 #include <sys/types.h>
  23 #include <string>
  24 #include <unistd.h>
  25 #include <sstream>
  26 #include <iostream>
  27 #include <fstream>
  28 #include "inspircd.h"
  29 #include "inspircd_io.h"
  30 #include "inspstring.h"
  31 #include "helperfuncs.h"
  32 #include "userprocess.h"
  33 #include "xline.h"
  34
  35 extern ServerConfig *Config;
  36 extern InspIRCd* ServerInstance;
  37 extern int openSockfd[MAXSOCKS];
  38 extern time_t TIME;
  39
  40
  41 ServerConfig::ServerConfig()
  42 {
  43         this->ClearStack();
  44         *ServerName = *Network = *ServerDesc = *AdminName = '\0';
  45         *AdminEmail = *AdminNick = *diepass = *restartpass = '\0';
  46         *motd = *rules = *PrefixQuit = *DieValue = *DNSServer = '\0';
  47         *OperOnlyStats = *ModPath = *MyExecutable = *DisabledCommands = *PID = '\0';
  48         log_file = NULL;
  49         nofork = false;
  50         unlimitcore = false;
  51         AllowHalfop = true;
  52         dns_timeout = 5;
  53         NetBufferSize = 10240;
  54         SoftLimit = MAXCLIENTS;
  55         MaxConn = SOMAXCONN;
  56         MaxWhoResults = 100;
  57         debugging = 0;
  58         LogLevel = DEFAULT;
  59         DieDelay = 5;
  60 }
  61
  62 void ServerConfig::ClearStack()
  63 {
  64         include_stack.clear();
  65 }
  66
  67 Module* ServerConfig::GetIOHook(int port)
  68 {
  69         std::map<int,Module*>::iterator x = IOHookModule.find(port);
  70         return (x != IOHookModule.end() ? x->second : NULL);
  71 }
  72
  73 bool ServerConfig::AddIOHook(int port, Module* iomod)
  74 {
  75         if (!GetIOHook(port))
  76         {
  77                 IOHookModule[port] = iomod;
  78                 return true;
  79         }
  80         return false;
  81 }
  82
  83 bool ServerConfig::DelIOHook(int port)
  84 {
  85         std::map<int,Module*>::iterator x = IOHookModule.find(port);
  86         if (x != IOHookModule.end())
  87         {
  88                 IOHookModule.erase(x);
  89                 return true;
  90         }
  91         return false;
  92 }
  93
  94 void ServerConfig::Read(bool bail, userrec* user)
  95 {
  96         char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF],MW[MAXBUF],MCON[MAXBUF];
  97         char AH[MAXBUF],AP[MAXBUF],AF[MAXBUF],DNT[MAXBUF],pfreq[MAXBUF],thold[MAXBUF],sqmax[MAXBUF],rqmax[MAXBUF],SLIMT[MAXBUF];
  98         ConnectClass c;
  99         std::stringstream errstr;
 100         include_stack.clear();
 101
 102         if (!LoadConf(CONFIG_FILE,&Config->config_f,&errstr))
 103         {
 104                 errstr.seekg(0);
 105                 log(DEFAULT,"There were errors in your configuration:\n%s",errstr.str().c_str());
 106                 if (bail)
 107                 {
 108                         printf("There were errors in your configuration:\n%s",errstr.str().c_str());
 109                         Exit(0);
 110                 }
 111                 else
 112                 {
 113                         char dataline[1024];
 114                         if (user)
 115                         {
 116                                 WriteServ(user->fd,"NOTICE %s :There were errors in the configuration file:",user->nick);
 117                                 while (!errstr.eof())
 118                                 {
 119                                         errstr.getline(dataline,1024);
 120                                         WriteServ(user->fd,"NOTICE %s :%s",user->nick,dataline);
 121                                 }
 122                         }
 123                         else
 124                         {
 125                                 WriteOpers("There were errors in the configuration file:");
 126                                 while (!errstr.eof())
 127                                 {
 128                                         errstr.getline(dataline,1024);
 129                                         WriteOpers(dataline);
 130                                 }
 131                         }
 132                         return;
 133                 }
 134         }
 135
 136         ConfValue("server","name",0,Config->ServerName,&Config->config_f);
 137         ConfValue("server","description",0,Config->ServerDesc,&Config->config_f);
 138         ConfValue("server","network",0,Config->Network,&Config->config_f);
 139         ConfValue("admin","name",0,Config->AdminName,&Config->config_f);
 140         ConfValue("admin","email",0,Config->AdminEmail,&Config->config_f);
 141         ConfValue("admin","nick",0,Config->AdminNick,&Config->config_f);
 142         ConfValue("files","motd",0,Config->motd,&Config->config_f);
 143         ConfValue("files","rules",0,Config->rules,&Config->config_f);
 144         ConfValue("power","diepass",0,Config->diepass,&Config->config_f);
 145         ConfValue("power","pause",0,pauseval,&Config->config_f);
 146         ConfValue("power","restartpass",0,Config->restartpass,&Config->config_f);
 147         ConfValue("options","prefixquit",0,Config->PrefixQuit,&Config->config_f);
 148         ConfValue("die","value",0,Config->DieValue,&Config->config_f);
 149         ConfValue("options","loglevel",0,dbg,&Config->config_f);
 150         ConfValue("options","netbuffersize",0,NB,&Config->config_f);
 151         ConfValue("options","maxwho",0,MW,&Config->config_f);
 152         ConfValue("options","allowhalfop",0,AH,&Config->config_f);
 153         ConfValue("options","allowprotect",0,AP,&Config->config_f);
 154         ConfValue("options","allowfounder",0,AF,&Config->config_f);
 155         ConfValue("dns","server",0,Config->DNSServer,&Config->config_f);
 156         ConfValue("dns","timeout",0,DNT,&Config->config_f);
 157         ConfValue("options","moduledir",0,Config->ModPath,&Config->config_f);
 158         ConfValue("disabled","commands",0,Config->DisabledCommands,&Config->config_f);
 159         ConfValue("options","somaxconn",0,MCON,&Config->config_f);
 160         ConfValue("options","softlimit",0,SLIMT,&Config->config_f);
 161         ConfValue("options","operonlystats",0,Config->OperOnlyStats,&Config->config_f);
 162
 163         Config->SoftLimit = atoi(SLIMT);
 164         if ((Config->SoftLimit < 1) || (Config->SoftLimit > MAXCLIENTS))
 165         {
 166                 log(DEFAULT,"WARNING: <options:softlimit> value is greater than %d or less than 0, set to %d.",MAXCLIENTS,MAXCLIENTS);
 167                 Config->SoftLimit = MAXCLIENTS;
 168         }
 169         Config->MaxConn = atoi(MCON);
 170         if (Config->MaxConn > SOMAXCONN)
 171                 log(DEFAULT,"WARNING: <options:somaxconn> value may be higher than the system-defined SOMAXCONN value!");
 172         Config->NetBufferSize = atoi(NB);
 173         Config->MaxWhoResults = atoi(MW);
 174         Config->dns_timeout = atoi(DNT);
 175         if (!Config->dns_timeout)
 176                 Config->dns_timeout = 5;
 177         if (!Config->MaxConn)
 178                 Config->MaxConn = SOMAXCONN;
 179         if (!*Config->DNSServer)
 180                 strlcpy(Config->DNSServer,"127.0.0.1",MAXBUF);
 181         if (!*Config->ModPath)
 182                 strlcpy(Config->ModPath,MOD_PATH,MAXBUF);
 183         Config->AllowHalfop = ((!strcasecmp(AH,"true")) || (!strcasecmp(AH,"1")) || (!strcasecmp(AH,"yes")));
 184         if ((!Config->NetBufferSize) || (Config->NetBufferSize > 65535) || (Config->NetBufferSize < 1024))
 185         {
 186                 log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
 187                 Config->NetBufferSize = 10240;
 188         }
 189         if ((!Config->MaxWhoResults) || (Config->MaxWhoResults > 65535) || (Config->MaxWhoResults < 1))
 190         {
 191                 log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128.");
 192                 Config->MaxWhoResults = 128;
 193         }
 194         Config->LogLevel = DEFAULT;
 195         if (!strcmp(dbg,"debug"))
 196         {
 197                 Config->LogLevel = DEBUG;
 198                 Config->debugging = 1;
 199         }
 200         if (!strcmp(dbg,"verbose"))
 201                 Config->LogLevel = VERBOSE;
 202         if (!strcmp(dbg,"default"))
 203                 Config->LogLevel = DEFAULT;
 204         if (!strcmp(dbg,"sparse"))
 205                 Config->LogLevel = SPARSE;
 206         if (!strcmp(dbg,"none"))
 207                 Config->LogLevel = NONE;
 208
 209         readfile(Config->MOTD,Config->motd);
 210         log(DEFAULT,"Reading message of the day...");
 211         readfile(Config->RULES,Config->rules);
 212         log(DEFAULT,"Reading connect classes...");
 213         Classes.clear();
 214         for (int i = 0; i < ConfValueEnum("connect",&Config->config_f); i++)
 215         {
 216                 *Value = 0;
 217                 ConfValue("connect","allow",i,Value,&Config->config_f);
 218                 ConfValue("connect","timeout",i,timeout,&Config->config_f);
 219                 ConfValue("connect","flood",i,flood,&Config->config_f);
 220                 ConfValue("connect","pingfreq",i,pfreq,&Config->config_f);
 221                 ConfValue("connect","threshold",i,thold,&Config->config_f);
 222                 ConfValue("connect","sendq",i,sqmax,&Config->config_f);
 223                 ConfValue("connect","recvq",i,rqmax,&Config->config_f);
 224                 if (*Value)
 225                 {
 226                         c.host = Value;
 227                         c.type = CC_ALLOW;
 228                         strlcpy(Value,"",MAXBUF);
 229                         ConfValue("connect","password",i,Value,&Config->config_f);
 230                         c.pass = Value;
 231                         c.registration_timeout = 90; // default is 2 minutes
 232                         c.pingtime = 120;
 233                         c.flood = atoi(flood);
 234                         c.threshold = 5;
 235                         c.sendqmax = 262144; // 256k
 236                         c.recvqmax = 4096;   // 4k
 237                         if (atoi(thold)>0)
 238                         {
 239                                 c.threshold = atoi(thold);
 240                         }
 241                         if (atoi(sqmax)>0)
 242                         {
 243                                 c.sendqmax = atoi(sqmax);
 244                         }
 245                         if (atoi(rqmax)>0)
 246                         {
 247                                 c.recvqmax = atoi(rqmax);
 248                         }
 249                         if (atoi(timeout)>0)
 250                         {
 251                                 c.registration_timeout = atoi(timeout);
 252                         }
 253                         if (atoi(pfreq)>0)
 254                         {
 255                                 c.pingtime = atoi(pfreq);
 256                         }
 257                         Classes.push_back(c);
 258                 }
 259                 else
 260                 {
 261                         ConfValue("connect","deny",i,Value,&Config->config_f);
 262                         c.host = Value;
 263                         c.type = CC_DENY;
 264                         Classes.push_back(c);
 265                         log(DEBUG,"Read connect class type DENY, host=%s",c.host.c_str());
 266                 }
 267
 268         }
 269         log(DEFAULT,"Reading K lines,Q lines and Z lines from config...");
 270         read_xline_defaults();
 271         log(DEFAULT,"Applying K lines, Q lines and Z lines...");
 272         apply_lines(APPLY_ALL);
 273
 274         ConfValue("pid","file",0,Config->PID,&Config->config_f);
 275         // write once here, to try it out and make sure its ok
 276         WritePID(Config->PID);
 277
 278         log(DEFAULT,"Done reading configuration file, InspIRCd is now starting.");
 279         if (!bail)
 280         {
 281                 log(DEFAULT,"Adding and removing modules due to rehash...");
 282
 283                 std::vector<std::string> old_module_names, new_module_names, added_modules, removed_modules;
 284
 285                 // store the old module names
 286                 for (std::vector<std::string>::iterator t = module_names.begin(); t != module_names.end(); t++)
 287                 {
 288                         old_module_names.push_back(*t);
 289                 }
 290
 291                 // get the new module names
 292                 for (int count2 = 0; count2 < ConfValueEnum("module",&Config->config_f); count2++)
 293                 {
 294                         ConfValue("module","name",count2,Value,&Config->config_f);
 295                         new_module_names.push_back(Value);
 296                 }
 297
 298                 // now create a list of new modules that are due to be loaded
 299                 // and a seperate list of modules which are due to be unloaded
 300                 for (std::vector<std::string>::iterator _new = new_module_names.begin(); _new != new_module_names.end(); _new++)
 301                 {
 302                         bool added = true;
 303                         for (std::vector<std::string>::iterator old = old_module_names.begin(); old != old_module_names.end(); old++)
 304                         {
 305                                 if (*old == *_new)
 306                                         added = false;
 307                         }
 308                         if (added)
 309                                 added_modules.push_back(*_new);
 310                 }
 311                 for (std::vector<std::string>::iterator oldm = old_module_names.begin(); oldm != old_module_names.end(); oldm++)
 312                 {
 313                         bool removed = true;
 314                         for (std::vector<std::string>::iterator newm = new_module_names.begin(); newm != new_module_names.end(); newm++)
 315                         {
 316                                 if (*newm == *oldm)
 317                                         removed = false;
 318                         }
 319                         if (removed)
 320                                 removed_modules.push_back(*oldm);
 321                 }
 322                 // now we have added_modules, a vector of modules to be loaded, and removed_modules, a vector of modules
 323                 // to be removed.
 324                 int rem = 0, add = 0;
 325                 if (!removed_modules.empty())
 326                 for (std::vector<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 327                 {
 328                         if (ServerInstance->UnloadModule(removing->c_str()))
 329                         {
 330                                 WriteOpers("*** REHASH UNLOADED MODULE: %s",removing->c_str());
 331                                 WriteServ(user->fd,"973 %s %s :Module %s successfully unloaded.",user->nick, removing->c_str(), removing->c_str());
 332                                 rem++;
 333                         }
 334                         else
 335                         {
 336                                 WriteServ(user->fd,"972 %s %s :Failed to unload module %s: %s",user->nick, removing->c_str(), removing->c_str(), ServerInstance->ModuleError());
 337                         }
 338                 }
 339                 if (!added_modules.empty())
 340                 for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 341                 {
 342                         if (ServerInstance->LoadModule(adding->c_str()))
 343                         {
 344                                 WriteOpers("*** REHASH LOADED MODULE: %s",adding->c_str());
 345                                 WriteServ(user->fd,"975 %s %s :Module %s successfully loaded.",user->nick, adding->c_str(), adding->c_str());
 346                                 add++;
 347                         }
 348                         else
 349                         {
 350                                 WriteServ(user->fd,"974 %s %s :Failed to load module %s: %s",user->nick, adding->c_str(), adding->c_str(), ServerInstance->ModuleError());
 351                         }
 352                 }
 353                 log(DEFAULT,"Successfully unloaded %lu of %lu modules and loaded %lu of %lu modules.",(unsigned long)rem,(unsigned long)removed_modules.size(),
 354                                                                                                         (unsigned long)add,(unsigned long)added_modules.size());
 355         }
 356 }
 357
 358
 359 void Exit (int status)
 360 {
 361         if (Config->log_file)
 362                 fclose(Config->log_file);
 363         send_error("Server shutdown.");
 364         exit (status);
 365 }
 366
 367 void Killed(int status)
 368 {
 369         if (Config->log_file)
 370                 fclose(Config->log_file);
 371         send_error("Server terminated.");
 372         exit(status);
 373 }
 374
 375 void Rehash(int status)
 376 {
 377         WriteOpers("Rehashing config file %s due to SIGHUP",CONFIG_FILE);
 378         fclose(Config->log_file);
 379         OpenLog(NULL,NULL);
 380         Config->Read(false,NULL);
 381 }
 382
 383
 384
 385 void Start (void)
 386 {
 387         printf("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
 388         printf("(C) ChatSpike Development team.\033[0m\n\n");
 389         printf("Developers:\033[1;32m     Brain, FrostyCoolSlug\033[0m\n");
 390         printf("Documentation:\033[1;32m  FrostyCoolSlug, w00t\033[0m\n");
 391         printf("Testers:\033[1;32m        typobox43, piggles, Lord_Zathras, CC\033[0m\n");
 392         printf("Name concept:\033[1;32m   Lord_Zathras\033[0m\n\n");
 393 }
 394
 395 void WritePID(std::string filename)
 396 {
 397         ofstream outfile(filename.c_str());
 398         if (outfile.is_open())
 399         {
 400                 outfile << getpid();
 401                 outfile.close();
 402         }
 403         else
 404         {
 405                 printf("Failed to write PID-file '%s', exiting.\n",filename.c_str());
 406                 log(DEFAULT,"Failed to write PID-file '%s', exiting.",filename.c_str());
 407                 Exit(0);
 408         }
 409 }
 410
 411 void SetSignals()
 412 {
 413         signal (SIGALRM, SIG_IGN);
 414         signal (SIGHUP, Rehash);
 415         signal (SIGPIPE, SIG_IGN);
 416         signal (SIGTERM, Exit);
 417         signal (SIGSEGV, Error);
 418 }
 419
 420
 421 int DaemonSeed (void)
 422 {
 423         int childpid;
 424         if ((childpid = fork ()) < 0)
 425                 return (ERROR);
 426         else if (childpid > 0)
 427                 exit (0);
 428         setsid ();
 429         umask (007);
 430         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 431
 432         setpriority(PRIO_PROCESS,(int)getpid(),15);
 433
 434         if (Config->unlimitcore)
 435         {
 436                 rlimit rl;
 437                 if (getrlimit(RLIMIT_CORE, &rl) == -1)
 438                 {
 439                         log(DEFAULT,"Failed to getrlimit()!");
 440                         return(FALSE);
 441                 }
 442                 else
 443                 {
 444                         rl.rlim_cur = rl.rlim_max;
 445                         if (setrlimit(RLIMIT_CORE, &rl) == -1)
 446                                 log(DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 447                 }
 448         }
 449
 450         return (TRUE);
 451 }
 452
 453
 454 /* Make Sure Modules Are Avaliable!
 455  * (BugFix By Craig.. See? I do work! :p)
 456  * Modified by brain, requires const char*
 457  * to work with other API functions
 458  */
 459
 460 bool FileExists (const char* file)
 461 {
 462         FILE *input;
 463         if ((input = fopen (file, "r")) == NULL)
 464         {
 465                 return(false);
 466         }
 467         else
 468         {
 469                 fclose (input);
 470                 return(true);
 471         }
 472 }
 473
 474 /* ConfProcess does the following things to a config line in the following order:
 475  *
 476  * Processes the line for syntax errors as shown below
 477  *      (1) Line void of quotes or equals (a malformed, illegal tag format)
 478  *      (2) Odd number of quotes on the line indicating a missing quote
 479  *      (3) number of equals signs not equal to number of quotes / 2 (missing an equals sign)
 480  *      (4) Spaces between the opening bracket (<) and the keyword
 481  *      (5) Spaces between a keyword and an equals sign
 482  *      (6) Spaces between an equals sign and a quote
 483  * Removes trailing spaces
 484  * Removes leading spaces
 485  * Converts tabs to spaces
 486  * Turns multiple spaces that are outside of quotes into single spaces
 487  */
 488
 489 std::string ServerConfig::ConfProcess(char* buffer, long linenumber, std::stringstream* errorstream, bool &error, std::string filename)
 490 {
 491         long number_of_quotes = 0;
 492         long number_of_equals = 0;
 493         bool has_open_bracket = false;
 494         bool in_quotes = false;
 495         error = false;
 496         if (!buffer)
 497         {
 498                 return "";
 499         }
 500         // firstly clean up the line by stripping spaces from the start and end and converting tabs to spaces
 501         for (unsigned int d = 0; d < strlen(buffer); d++)
 502                 if ((buffer[d]) == 9)
 503                         buffer[d] = ' ';
 504         while ((buffer[0] == ' ') && (strlen(buffer)>0)) buffer++;
 505         while ((buffer[strlen(buffer)-1] == ' ') && (strlen(buffer)>0)) buffer[strlen(buffer)-1] = '\0';
 506
 507         // empty lines are syntactically valid, as are comments
 508         if (!(*buffer) || buffer[0] == '#')
 509                 return "";
 510
 511         for (unsigned int c = 0; c < strlen(buffer); c++)
 512         {
 513                 // convert all spaces that are OUTSIDE quotes into hardspace (0xA0) as this will make them easier to
 514                 // search and replace later :)
 515                 if ((!in_quotes) && (buffer[c] == ' '))
 516                         buffer[c] = '\xA0';
 517                 if ((buffer[c] == '<') && (!in_quotes))
 518                 {
 519                         has_open_bracket = true;
 520                         if (strlen(buffer) == 1)
 521                         {
 522                                 *errorstream << "Tag without identifier at " << filename << ":" << linenumber << endl;
 523                                 error = true;
 524                                 return "";
 525                         }
 526                         else if ((tolower(buffer[c+1]) < 'a') || (tolower(buffer[c+1]) > 'z'))
 527                         {
 528                                 *errorstream << "Invalid characters in identifier at " << filename << ":" << linenumber << endl;
 529                                 error = true;
 530                                 return "";
 531                         }
 532                 }
 533                 if (buffer[c] == '"')
 534                 {
 535                         number_of_quotes++;
 536                         in_quotes = (!in_quotes);
 537                 }
 538                 if ((buffer[c] == '=') && (!in_quotes))
 539                 {
 540                         number_of_equals++;
 541                         if (strlen(buffer) == c)
 542                         {
 543                                 *errorstream << "Variable without a value at " << filename << ":" << linenumber << endl;
 544                                 error = true;
 545                                 return "";
 546                         }
 547                         else if (buffer[c+1] != '"')
 548                         {
 549                                 *errorstream << "Variable name not followed immediately by its value at " << filename << ":" << linenumber << endl;
 550                                 error = true;
 551                                 return "";
 552                         }
 553                         else if (!c)
 554                         {
 555                                 *errorstream << "Value without a variable (line starts with '=') at " << filename << ":" << linenumber << endl;
 556                                 error = true;
 557                                 return "";
 558                         }
 559                         else if (buffer[c-1] == '\xA0')
 560                         {
 561                                 *errorstream << "Variable name not followed immediately by its value at " << filename << ":" << linenumber << endl;
 562                                 error = true;
 563                                 return "";
 564                         }
 565                 }
 566         }
 567         // no quotes, and no equals. something freaky.
 568         if ((!number_of_quotes) || (!number_of_equals) && (strlen(buffer)>2) && (buffer[0]=='<'))
 569         {
 570                 *errorstream << "Malformed tag at " << filename << ":" << linenumber << endl;
 571                 error = true;
 572                 return "";
 573         }
 574         // odd number of quotes. thats just wrong.
 575         if ((number_of_quotes % 2) != 0)
 576         {
 577                 *errorstream << "Missing \" at " << filename << ":" << linenumber << endl;
 578                 error = true;
 579                 return "";
 580         }
 581         if (number_of_equals < (number_of_quotes/2))
 582         {
 583                 *errorstream << "Missing '=' at " << filename << ":" << linenumber << endl;
 584         }
 585         if (number_of_equals > (number_of_quotes/2))
 586         {
 587                 *errorstream << "Too many '=' at " << filename << ":" << linenumber << endl;
 588         }
 589
 590         std::string parsedata = buffer;
 591         // turn multispace into single space
 592         while (parsedata.find("\xA0\xA0") != std::string::npos)
 593         {
 594                 parsedata.erase(parsedata.find("\xA0\xA0"),1);
 595         }
 596
 597         // turn our hardspace back into softspace
 598         for (unsigned int d = 0; d < parsedata.length(); d++)
 599         {
 600                 if (parsedata[d] == '\xA0')
 601                         parsedata[d] = ' ';
 602         }
 603
 604         // and we're done, the line is fine!
 605         return parsedata;
 606 }
 607
 608 int ServerConfig::fgets_safe(char* buffer, size_t maxsize, FILE* &file)
 609 {
 610         char c_read = '\0';
 611         unsigned int bufptr = 0;
 612         while ((!feof(file)) && (c_read != '\n') && (c_read != '\r') && (bufptr < maxsize))
 613         {
 614                 c_read = fgetc(file);
 615                 if ((c_read != '\n') && (c_read != '\r'))
 616                         buffer[bufptr++] = c_read;
 617         }
 618         buffer[bufptr] = '\0';
 619         return bufptr;
 620 }
 621
 622 bool ServerConfig::LoadConf(const char* filename, std::stringstream *target, std::stringstream* errorstream)
 623 {
 624         target->str("");
 625         errorstream->str("");
 626         long linenumber = 1;
 627         // first, check that the file exists before we try to do anything with it
 628         if (!FileExists(filename))
 629         {
 630                 *errorstream << "File " << filename << " not found." << endl;
 631                 return false;
 632         }
 633         // Fix the chmod of the file to restrict it to the current user and group
 634         chmod(filename,0600);
 635         for (unsigned int t = 0; t < include_stack.size(); t++)
 636         {
 637                 if (std::string(filename) == include_stack[t])
 638                 {
 639                         *errorstream << "File " << filename << " is included recursively (looped inclusion)." << endl;
 640                         return false;
 641                 }
 642         }
 643         include_stack.push_back(filename);
 644         // now open it
 645         FILE* conf = fopen(filename,"r");
 646         char buffer[MAXBUF];
 647         if (conf)
 648         {
 649                 while (!feof(conf))
 650                 {
 651                         if (fgets_safe(buffer, MAXBUF, conf))
 652                         {
 653                                 if ((!feof(conf)) && (buffer) && (strlen(buffer)))
 654                                 {
 655                                         if ((buffer[0] != '#') && (buffer[0] != '\r')  && (buffer[0] != '\n'))
 656                                         {
 657                                                 if (!strncmp(buffer,"<include file=\"",15))
 658                                                 {
 659                                                         char* buf = buffer;
 660                                                         char confpath[10240],newconf[10240];
 661                                                         // include file directive
 662                                                         buf += 15;      // advance to filename
 663                                                         for (unsigned int j = 0; j < strlen(buf); j++)
 664                                                         {
 665                                                                 if (buf[j] == '\\')
 666                                                                         buf[j] = '/';
 667                                                                 if (buf[j] == '"')
 668                                                                 {
 669                                                                         buf[j] = '\0';
 670                                                                         break;
 671                                                                 }
 672                                                         }
 673                                                         log(DEFAULT,"Opening included file '%s'",buf);
 674                                                         if (*buf != '/')
 675                                                         {
 676                                                                 strlcpy(confpath,CONFIG_FILE,10240);
 677                                                                 if (strstr(confpath,"/inspircd.conf"))
 678                                                                 {
 679                                                                         // leaves us with just the path
 680                                                                         *(strstr(confpath,"/inspircd.conf")) = '\0';
 681                                                                 }
 682                                                                 snprintf(newconf,10240,"%s/%s",confpath,buf);
 683                                                         }
 684                                                         else strlcpy(newconf,buf,10240);
 685                                                         std::stringstream merge(stringstream::in | stringstream::out);
 686                                                         // recursively call LoadConf and get the new data, use the same errorstream
 687                                                         if (LoadConf(newconf, &merge, errorstream))
 688                                                         {
 689                                                                 // append to the end of the file
 690                                                                 std::string newstuff = merge.str();
 691                                                                 *target << newstuff;
 692                                                         }
 693                                                         else
 694                                                         {
 695                                                                 // the error propogates up to its parent recursively
 696                                                                 // causing the config reader to bail at the top level.
 697                                                                 fclose(conf);
 698                                                                 return false;
 699                                                         }
 700                                                 }
 701                                                 else
 702                                                 {
 703                                                         bool error = false;
 704                                                         std::string data = this->ConfProcess(buffer,linenumber++,errorstream,error,filename);
 705                                                         if (error)
 706                                                         {
 707                                                                 return false;
 708                                                         }
 709                                                         *target << data;
 710                                                 }
 711                                         }
 712                                         else linenumber++;
 713                                 }
 714                         }
 715                 }
 716                 fclose(conf);
 717         }
 718         target->seekg(0);
 719         return true;
 720 }
 721
 722 /* Counts the number of tags of a certain type within the config file, e.g. to enumerate opers */
 723
 724 int ServerConfig::EnumConf(std::stringstream *config, const char* tag)
 725 {
 726         int ptr = 0;
 727         char buffer[MAXBUF], c_tag[MAXBUF], c, lastc;
 728         int in_token, in_quotes, tptr, idx = 0;
 729
 730         const char* buf = config->str().c_str();
 731         long bptr = 0;
 732         long len = strlen(buf);
 733
 734         ptr = 0;
 735         in_token = 0;
 736         in_quotes = 0;
 737         lastc = '\0';
 738         while (bptr<len)
 739         {
 740                 lastc = c;
 741                 c = buf[bptr++];
 742                 if ((c == '#') && (lastc == '\n'))
 743                 {
 744                         while ((c != '\n') && (bptr<len))
 745                         {
 746                                 lastc = c;
 747                                 c = buf[bptr++];
 748                         }
 749                 }
 750                 if ((c == '<') && (!in_quotes))
 751                 {
 752                         tptr = 0;
 753                         in_token = 1;
 754                         do {
 755                                 c = buf[bptr++];
 756                                 if (c != ' ')
 757                                 {
 758                                         c_tag[tptr++] = c;
 759                                         c_tag[tptr] = '\0';
 760                                 }
 761                         } while (c != ' ');
 762                 }
 763                 if (c == '"')
 764                 {
 765                         in_quotes = (!in_quotes);
 766                 }
 767                 if ((c == '>') && (!in_quotes))
 768                 {
 769                         in_token = 0;
 770                         if (!strcmp(c_tag,tag))
 771                         {
 772                                 /* correct tag, but wrong index */
 773                                 idx++;
 774                         }
 775                         c_tag[0] = '\0';
 776                         buffer[0] = '\0';
 777                         ptr = 0;
 778                         tptr = 0;
 779                 }
 780                 if (c != '>')
 781                 {
 782                         if ((in_token) && (c != '\n') && (c != '\r'))
 783                         {
 784                                 buffer[ptr++] = c;
 785                                 buffer[ptr] = '\0';
 786                         }
 787                 }
 788         }
 789         return idx;
 790 }
 791
 792 /* Counts the number of values within a certain tag */
 793
 794 int ServerConfig::EnumValues(std::stringstream *config, const char* tag, int index)
 795 {
 796         int ptr = 0;
 797         char buffer[MAXBUF], c_tag[MAXBUF], c, lastc;
 798         int in_token, in_quotes, tptr, idx = 0;
 799
 800         bool correct_tag = false;
 801         int num_items = 0;
 802
 803         const char* buf = config->str().c_str();
 804         long bptr = 0;
 805         long len = strlen(buf);
 806
 807         ptr = 0;
 808         in_token = 0;
 809         in_quotes = 0;
 810         lastc = '\0';
 811         while (bptr<len)
 812         {
 813                 lastc = c;
 814                 c = buf[bptr++];
 815                 if ((c == '#') && (lastc == '\n'))
 816                 {
 817                         while ((c != '\n') && (bptr<len))
 818                         {
 819                                 lastc = c;
 820                                 c = buf[bptr++];
 821                         }
 822                 }
 823                 if ((c == '<') && (!in_quotes))
 824                 {
 825                         tptr = 0;
 826                         in_token = 1;
 827                         do {
 828                                 c = buf[bptr++];
 829                                 if (c != ' ')
 830                                 {
 831                                         c_tag[tptr++] = c;
 832                                         c_tag[tptr] = '\0';
 833
 834                                         if ((!strcmp(c_tag,tag)) && (idx == index))
 835                                         {
 836                                                 correct_tag = true;
 837                                         }
 838                                 }
 839                         } while (c != ' ');
 840                 }
 841                 if (c == '"')
 842                 {
 843                         in_quotes = (!in_quotes);
 844                 }
 845
 846                 if ( (correct_tag) && (!in_quotes) && ( (c == ' ') || (c == '\n') || (c == '\r') ) )
 847                 {
 848                         num_items++;
 849                 }
 850                 if ((c == '>') && (!in_quotes))
 851                 {
 852                         in_token = 0;
 853                         if (correct_tag)
 854                                 correct_tag = false;
 855                         if (!strcmp(c_tag,tag))
 856                         {
 857                                 /* correct tag, but wrong index */
 858                                 idx++;
 859                         }
 860                         c_tag[0] = '\0';
 861                         buffer[0] = '\0';
 862                         ptr = 0;
 863                         tptr = 0;
 864                 }
 865                 if (c != '>')
 866                 {
 867                         if ((in_token) && (c != '\n') && (c != '\r'))
 868                         {
 869                                 buffer[ptr++] = c;
 870                                 buffer[ptr] = '\0';
 871                         }
 872                 }
 873         }
 874         return num_items+1;
 875 }
 876
 877
 878
 879 int ServerConfig::ConfValueEnum(char* tag, std::stringstream* config)
 880 {
 881         return EnumConf(config,tag);
 882 }
 883
 884
 885
 886 /* Retrieves a value from the config file. If there is more than one value of the specified
 887  * key and section (e.g. for opers etc) then the index value specifies which to retreive, e.g.
 888  *
 889  * ConfValue("oper","name",2,result);
 890  */
 891
 892 int ServerConfig::ReadConf(std::stringstream *config, const char* tag, const char* var, int index, char *result)
 893 {
 894         int ptr = 0;
 895         char buffer[65535], c_tag[MAXBUF], c, lastc;
 896         int in_token, in_quotes, tptr, idx = 0;
 897         char* key;
 898
 899         const char* buf = config->str().c_str();
 900         long bptr = 0;
 901         long len = config->str().length();
 902
 903         ptr = 0;
 904         in_token = 0;
 905         in_quotes = 0;
 906         lastc = '\0';
 907         c_tag[0] = '\0';
 908         buffer[0] = '\0';
 909         while (bptr<len)
 910         {
 911                 lastc = c;
 912                 c = buf[bptr++];
 913                 // FIX: Treat tabs as spaces
 914                 if (c == 9)
 915                         c = 32;
 916                 if ((c == '<') && (!in_quotes))
 917                 {
 918                         tptr = 0;
 919                         in_token = 1;
 920                         do {
 921                                 c = buf[bptr++];
 922                                 if (c != ' ')
 923                                 {
 924                                         c_tag[tptr++] = c;
 925                                         c_tag[tptr] = '\0';
 926                                 }
 927                         // FIX: Tab can follow a tagname as well as space.
 928                         } while ((c != ' ') && (c != 9));
 929                 }
 930                 if (c == '"')
 931                 {
 932                         in_quotes = (!in_quotes);
 933                 }
 934                 if ((c == '>') && (!in_quotes))
 935                 {
 936                         in_token = 0;
 937                         if (idx == index)
 938                         {
 939                                 if (!strcmp(c_tag,tag))
 940                                 {
 941                                         if ((buffer) && (c_tag) && (var))
 942                                         {
 943                                                 key = strstr(buffer,var);
 944                                                 if (!key)
 945                                                 {
 946                                                         /* value not found in tag */
 947                                                         *result = 0;
 948                                                         return 0;
 949                                                 }
 950                                                 else
 951                                                 {
 952                                                         key+=strlen(var);
 953                                                         while (*key !='"')
 954                                                         {
 955                                                                 if (!*key)
 956                                                                 {
 957                                                                         /* missing quote */
 958                                                                         *result = 0;
 959                                                                         return 0;
 960                                                                 }
 961                                                                 key++;
 962                                                         }
 963                                                         key++;
 964                                                         for (unsigned j = 0; j < strlen(key); j++)
 965                                                         {
 966                                                                 if (key[j] == '"')
 967                                                                 {
 968                                                                         key[j] = '\0';
 969                                                                 }
 970                                                         }
 971                                                         strlcpy(result,key,MAXBUF);
 972                                                         return 1;
 973                                                 }
 974                                         }
 975                                 }
 976                         }
 977                         if (!strcmp(c_tag,tag))
 978                         {
 979                                 /* correct tag, but wrong index */
 980                                 idx++;
 981                         }
 982                         c_tag[0] = '\0';
 983                         buffer[0] = '\0';
 984                         ptr = 0;
 985                         tptr = 0;
 986                 }
 987                 if (c != '>')
 988                 {
 989                         if ((in_token) && (c != '\n') && (c != '\r'))
 990                         {
 991                                 buffer[ptr++] = c;
 992                                 buffer[ptr] = '\0';
 993                         }
 994                 }
 995         }
 996         *result = 0; // value or its tag not found at all
 997         return 0;
 998 }
 999
1000
1001
1002 int ServerConfig::ConfValue(char* tag, char* var, int index, char *result,std::stringstream *config)
1003 {
1004         ReadConf(config, tag, var, index, result);
1005         return 0;
1006 }
1007
1008
1009
1010 // This will bind a socket to a port. It works for UDP/TCP
1011 int BindSocket (int sockfd, struct sockaddr_in client, struct sockaddr_in server, int port, char* addr)
1012 {
1013         memset((char *)&server,0,sizeof(server));
1014         struct in_addr addy;
1015         inet_aton(addr,&addy);
1016         server.sin_family = AF_INET;
1017         if (!strcmp(addr,""))
1018         {
1019                 server.sin_addr.s_addr = htonl(INADDR_ANY);
1020         }
1021         else
1022         {
1023                 server.sin_addr = addy;
1024         }
1025         server.sin_port = htons(port);
1026         if (bind(sockfd,(struct sockaddr*)&server,sizeof(server))<0)
1027         {
1028                 return(ERROR);
1029         }
1030         else
1031         {
1032                 listen(sockfd, Config->MaxConn);
1033                 return(TRUE);
1034         }
1035 }
1036
1037
1038 // Open a TCP Socket
1039 int OpenTCPSocket (void)
1040 {
1041         int sockfd;
1042         int on = 1;
1043         struct linger linger = { 0 };
1044
1045         if ((sockfd = socket (AF_INET, SOCK_STREAM, 0)) < 0)
1046                 return (ERROR);
1047         else
1048         {
1049                 setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (const char*)&on, sizeof(on));
1050                 /* This is BSD compatible, setting l_onoff to 0 is *NOT* http://web.irc.org/mla/ircd-dev/msg02259.html */
1051                 linger.l_onoff = 1;
1052                 linger.l_linger = 1;
1053                 setsockopt(sockfd, SOL_SOCKET, SO_LINGER, (const char*)&linger,sizeof(linger));
1054                 return (sockfd);
1055         }
1056 }
1057
1058 int BindPorts()
1059 {
1060         char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
1061         sockaddr_in client,server;
1062         int clientportcount = 0;
1063         int BoundPortCount = 0;
1064         for (int count = 0; count < Config->ConfValueEnum("bind",&Config->config_f); count++)
1065         {
1066                 Config->ConfValue("bind","port",count,configToken,&Config->config_f);
1067                 Config->ConfValue("bind","address",count,Addr,&Config->config_f);
1068                 Config->ConfValue("bind","type",count,Type,&Config->config_f);
1069                 if (strcmp(Type,"servers"))
1070                 {
1071                         // modules handle server bind types now,
1072                         // its not a typo in the strcmp.
1073                         Config->ports[clientportcount] = atoi(configToken);
1074                         strlcpy(Config->addrs[clientportcount],Addr,256);
1075                         clientportcount++;
1076                         log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
1077                 }
1078         }
1079         int PortCount = clientportcount;
1080
1081         for (int count = 0; count < PortCount; count++)
1082         {
1083                 if ((openSockfd[BoundPortCount] = OpenTCPSocket()) == ERROR)
1084                 {
1085                         log(DEBUG,"InspIRCd: startup: bad fd %lu",(unsigned long)openSockfd[BoundPortCount]);
1086                         return(ERROR);
1087                 }
1088                 if (BindSocket(openSockfd[BoundPortCount],client,server,Config->ports[count],Config->addrs[count]) == ERROR)
1089                 {
1090                         log(DEFAULT,"InspIRCd: startup: failed to bind port %lu",(unsigned long)Config->ports[count]);
1091                 }
1092                 else    /* well we at least bound to one socket so we'll continue */
1093                 {
1094                         BoundPortCount++;
1095                 }
1096         }
1097
1098         /* if we didn't bind to anything then abort */
1099         if (!BoundPortCount)
1100         {
1101                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
1102                 printf("\nERROR: Was not able to bind any of %lu ports! Please check your configuration.\n\n", (unsigned long)PortCount);
1103                 return (ERROR);
1104         }
1105
1106         return BoundPortCount;
1107 }
1108