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