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                 strcpy(Value,"");
 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                         strlcpy(c.host,Value,MAXBUF);
 225                         c.type = CC_ALLOW;
 226                         strlcpy(Value,"",MAXBUF);
 227                         ConfValue("connect","password",i,Value,&Config->config_f);
 228                         strlcpy(c.pass,Value,MAXBUF);
 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                         strlcpy(c.host,Value,MAXBUF);
 261                         c.type = CC_DENY;
 262                         Classes.push_back(c);
 263                         log(DEBUG,"Read connect class type DENY, host=%s",c.host);
 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
 408 int DaemonSeed (void)
 409 {
 410         int childpid;
 411         signal (SIGALRM, SIG_IGN);
 412         signal (SIGHUP, Rehash);
 413         signal (SIGPIPE, SIG_IGN);
 414         signal (SIGTERM, Exit);
 415         signal (SIGSEGV, Error);
 416         if ((childpid = fork ()) < 0)
 417                 return (ERROR);
 418         else if (childpid > 0)
 419                 exit (0);
 420         setsid ();
 421         umask (007);
 422         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 423
 424         setpriority(PRIO_PROCESS,(int)getpid(),15);
 425
 426         if (Config->unlimitcore)
 427         {
 428                 rlimit rl;
 429                 if (getrlimit(RLIMIT_CORE, &rl) == -1)
 430                 {
 431                         log(DEFAULT,"Failed to getrlimit()!");
 432                         return(FALSE);
 433                 }
 434                 else
 435                 {
 436                         rl.rlim_cur = rl.rlim_max;
 437                         if (setrlimit(RLIMIT_CORE, &rl) == -1)
 438                                 log(DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 439                 }
 440         }
 441
 442         return (TRUE);
 443 }
 444
 445
 446 /* Make Sure Modules Are Avaliable!
 447  * (BugFix By Craig.. See? I do work! :p)
 448  * Modified by brain, requires const char*
 449  * to work with other API functions
 450  */
 451
 452 bool FileExists (const char* file)
 453 {
 454         FILE *input;
 455         if ((input = fopen (file, "r")) == NULL)
 456         {
 457                 return(false);
 458         }
 459         else
 460         {
 461                 fclose (input);
 462                 return(true);
 463         }
 464 }
 465
 466 /* ConfProcess does the following things to a config line in the following order:
 467  *
 468  * Processes the line for syntax errors as shown below
 469  *      (1) Line void of quotes or equals (a malformed, illegal tag format)
 470  *      (2) Odd number of quotes on the line indicating a missing quote
 471  *      (3) number of equals signs not equal to number of quotes / 2 (missing an equals sign)
 472  *      (4) Spaces between the opening bracket (<) and the keyword
 473  *      (5) Spaces between a keyword and an equals sign
 474  *      (6) Spaces between an equals sign and a quote
 475  * Removes trailing spaces
 476  * Removes leading spaces
 477  * Converts tabs to spaces
 478  * Turns multiple spaces that are outside of quotes into single spaces
 479  */
 480
 481 std::string ServerConfig::ConfProcess(char* buffer, long linenumber, std::stringstream* errorstream, bool &error, std::string filename)
 482 {
 483         long number_of_quotes = 0;
 484         long number_of_equals = 0;
 485         bool has_open_bracket = false;
 486         bool in_quotes = false;
 487         error = false;
 488         if (!buffer)
 489         {
 490                 return "";
 491         }
 492         // firstly clean up the line by stripping spaces from the start and end and converting tabs to spaces
 493         for (unsigned int d = 0; d < strlen(buffer); d++)
 494                 if ((buffer[d]) == 9)
 495                         buffer[d] = ' ';
 496         while ((buffer[0] == ' ') && (strlen(buffer)>0)) buffer++;
 497         while ((buffer[strlen(buffer)-1] == ' ') && (strlen(buffer)>0)) buffer[strlen(buffer)-1] = '\0';
 498
 499         // empty lines are syntactically valid, as are comments
 500         if (!(*buffer) || buffer[0] == '#')
 501                 return "";
 502
 503         for (unsigned int c = 0; c < strlen(buffer); c++)
 504         {
 505                 // convert all spaces that are OUTSIDE quotes into hardspace (0xA0) as this will make them easier to
 506                 // search and replace later :)
 507                 if ((!in_quotes) && (buffer[c] == ' '))
 508                         buffer[c] = '\xA0';
 509                 if ((buffer[c] == '<') && (!in_quotes))
 510                 {
 511                         has_open_bracket = true;
 512                         if (strlen(buffer) == 1)
 513                         {
 514                                 *errorstream << "Tag without identifier at " << filename << ":" << linenumber << endl;
 515                                 error = true;
 516                                 return "";
 517                         }
 518                         else if ((tolower(buffer[c+1]) < 'a') || (tolower(buffer[c+1]) > 'z'))
 519                         {
 520                                 *errorstream << "Invalid characters in identifier at " << filename << ":" << linenumber << endl;
 521                                 error = true;
 522                                 return "";
 523                         }
 524                 }
 525                 if (buffer[c] == '"')
 526                 {
 527                         number_of_quotes++;
 528                         in_quotes = (!in_quotes);
 529                 }
 530                 if ((buffer[c] == '=') && (!in_quotes))
 531                 {
 532                         number_of_equals++;
 533                         if (strlen(buffer) == c)
 534                         {
 535                                 *errorstream << "Variable without a value at " << filename << ":" << linenumber << endl;
 536                                 error = true;
 537                                 return "";
 538                         }
 539                         else if (buffer[c+1] != '"')
 540                         {
 541                                 *errorstream << "Variable name not followed immediately by its value at " << filename << ":" << linenumber << endl;
 542                                 error = true;
 543                                 return "";
 544                         }
 545                         else if (!c)
 546                         {
 547                                 *errorstream << "Value without a variable (line starts with '=') at " << filename << ":" << linenumber << endl;
 548                                 error = true;
 549                                 return "";
 550                         }
 551                         else if (buffer[c-1] == '\xA0')
 552                         {
 553                                 *errorstream << "Variable name not followed immediately by its value at " << filename << ":" << linenumber << endl;
 554                                 error = true;
 555                                 return "";
 556                         }
 557                 }
 558         }
 559         // no quotes, and no equals. something freaky.
 560         if ((!number_of_quotes) || (!number_of_equals) && (strlen(buffer)>2) && (buffer[0]=='<'))
 561         {
 562                 *errorstream << "Malformed tag at " << filename << ":" << linenumber << endl;
 563                 error = true;
 564                 return "";
 565         }
 566         // odd number of quotes. thats just wrong.
 567         if ((number_of_quotes % 2) != 0)
 568         {
 569                 *errorstream << "Missing \" at " << filename << ":" << linenumber << endl;
 570                 error = true;
 571                 return "";
 572         }
 573         if (number_of_equals < (number_of_quotes/2))
 574         {
 575                 *errorstream << "Missing '=' at " << filename << ":" << linenumber << endl;
 576         }
 577         if (number_of_equals > (number_of_quotes/2))
 578         {
 579                 *errorstream << "Too many '=' at " << filename << ":" << linenumber << endl;
 580         }
 581
 582         std::string parsedata = buffer;
 583         // turn multispace into single space
 584         while (parsedata.find("\xA0\xA0") != std::string::npos)
 585         {
 586                 parsedata.erase(parsedata.find("\xA0\xA0"),1);
 587         }
 588
 589         // turn our hardspace back into softspace
 590         for (unsigned int d = 0; d < parsedata.length(); d++)
 591         {
 592                 if (parsedata[d] == '\xA0')
 593                         parsedata[d] = ' ';
 594         }
 595
 596         // and we're done, the line is fine!
 597         return parsedata;
 598 }
 599
 600 int ServerConfig::fgets_safe(char* buffer, size_t maxsize, FILE* &file)
 601 {
 602         char c_read = '\0';
 603         unsigned int bufptr = 0;
 604         while ((!feof(file)) && (c_read != '\n') && (c_read != '\r') && (bufptr < maxsize))
 605         {
 606                 c_read = fgetc(file);
 607                 if ((c_read != '\n') && (c_read != '\r'))
 608                         buffer[bufptr++] = c_read;
 609         }
 610         buffer[bufptr] = '\0';
 611         return bufptr;
 612 }
 613
 614 bool ServerConfig::LoadConf(const char* filename, std::stringstream *target, std::stringstream* errorstream)
 615 {
 616         target->str("");
 617         errorstream->str("");
 618         long linenumber = 1;
 619         // first, check that the file exists before we try to do anything with it
 620         if (!FileExists(filename))
 621         {
 622                 *errorstream << "File " << filename << " not found." << endl;
 623                 return false;
 624         }
 625         // Fix the chmod of the file to restrict it to the current user and group
 626         chmod(filename,0600);
 627         for (unsigned int t = 0; t < include_stack.size(); t++)
 628         {
 629                 if (std::string(filename) == include_stack[t])
 630                 {
 631                         *errorstream << "File " << filename << " is included recursively (looped inclusion)." << endl;
 632                         return false;
 633                 }
 634         }
 635         include_stack.push_back(filename);
 636         // now open it
 637         FILE* conf = fopen(filename,"r");
 638         char buffer[MAXBUF];
 639         if (conf)
 640         {
 641                 while (!feof(conf))
 642                 {
 643                         if (fgets_safe(buffer, MAXBUF, conf))
 644                         {
 645                                 if ((!feof(conf)) && (buffer) && (strlen(buffer)))
 646                                 {
 647                                         if ((buffer[0] != '#') && (buffer[0] != '\r')  && (buffer[0] != '\n'))
 648                                         {
 649                                                 if (!strncmp(buffer,"<include file=\"",15))
 650                                                 {
 651                                                         char* buf = buffer;
 652                                                         char confpath[10240],newconf[10240];
 653                                                         // include file directive
 654                                                         buf += 15;      // advance to filename
 655                                                         for (unsigned int j = 0; j < strlen(buf); j++)
 656                                                         {
 657                                                                 if (buf[j] == '\\')
 658                                                                         buf[j] = '/';
 659                                                                 if (buf[j] == '"')
 660                                                                 {
 661                                                                         buf[j] = '\0';
 662                                                                         break;
 663                                                                 }
 664                                                         }
 665                                                         log(DEFAULT,"Opening included file '%s'",buf);
 666                                                         if (*buf != '/')
 667                                                         {
 668                                                                 strlcpy(confpath,CONFIG_FILE,10240);
 669                                                                 if (strstr(confpath,"/inspircd.conf"))
 670                                                                 {
 671                                                                         // leaves us with just the path
 672                                                                         *(strstr(confpath,"/inspircd.conf")) = '\0';
 673                                                                 }
 674                                                                 snprintf(newconf,10240,"%s/%s",confpath,buf);
 675                                                         }
 676                                                         else snprintf(newconf,10240,"%s",buf);
 677                                                         std::stringstream merge(stringstream::in | stringstream::out);
 678                                                         // recursively call LoadConf and get the new data, use the same errorstream
 679                                                         if (LoadConf(newconf, &merge, errorstream))
 680                                                         {
 681                                                                 // append to the end of the file
 682                                                                 std::string newstuff = merge.str();
 683                                                                 *target << newstuff;
 684                                                         }
 685                                                         else
 686                                                         {
 687                                                                 // the error propogates up to its parent recursively
 688                                                                 // causing the config reader to bail at the top level.
 689                                                                 fclose(conf);
 690                                                                 return false;
 691                                                         }
 692                                                 }
 693                                                 else
 694                                                 {
 695                                                         bool error = false;
 696                                                         std::string data = this->ConfProcess(buffer,linenumber++,errorstream,error,filename);
 697                                                         if (error)
 698                                                         {
 699                                                                 return false;
 700                                                         }
 701                                                         *target << data;
 702                                                 }
 703                                         }
 704                                         else linenumber++;
 705                                 }
 706                         }
 707                 }
 708                 fclose(conf);
 709         }
 710         target->seekg(0);
 711         return true;
 712 }
 713
 714 /* Counts the number of tags of a certain type within the config file, e.g. to enumerate opers */
 715
 716 int ServerConfig::EnumConf(std::stringstream *config, const char* tag)
 717 {
 718         int ptr = 0;
 719         char buffer[MAXBUF], c_tag[MAXBUF], c, lastc;
 720         int in_token, in_quotes, tptr, idx = 0;
 721
 722         const char* buf = config->str().c_str();
 723         long bptr = 0;
 724         long len = strlen(buf);
 725
 726         ptr = 0;
 727         in_token = 0;
 728         in_quotes = 0;
 729         lastc = '\0';
 730         while (bptr<len)
 731         {
 732                 lastc = c;
 733                 c = buf[bptr++];
 734                 if ((c == '#') && (lastc == '\n'))
 735                 {
 736                         while ((c != '\n') && (bptr<len))
 737                         {
 738                                 lastc = c;
 739                                 c = buf[bptr++];
 740                         }
 741                 }
 742                 if ((c == '<') && (!in_quotes))
 743                 {
 744                         tptr = 0;
 745                         in_token = 1;
 746                         do {
 747                                 c = buf[bptr++];
 748                                 if (c != ' ')
 749                                 {
 750                                         c_tag[tptr++] = c;
 751                                         c_tag[tptr] = '\0';
 752                                 }
 753                         } while (c != ' ');
 754                 }
 755                 if (c == '"')
 756                 {
 757                         in_quotes = (!in_quotes);
 758                 }
 759                 if ((c == '>') && (!in_quotes))
 760                 {
 761                         in_token = 0;
 762                         if (!strcmp(c_tag,tag))
 763                         {
 764                                 /* correct tag, but wrong index */
 765                                 idx++;
 766                         }
 767                         c_tag[0] = '\0';
 768                         buffer[0] = '\0';
 769                         ptr = 0;
 770                         tptr = 0;
 771                 }
 772                 if (c != '>')
 773                 {
 774                         if ((in_token) && (c != '\n') && (c != '\r'))
 775                         {
 776                                 buffer[ptr++] = c;
 777                                 buffer[ptr] = '\0';
 778                         }
 779                 }
 780         }
 781         return idx;
 782 }
 783
 784 /* Counts the number of values within a certain tag */
 785
 786 int ServerConfig::EnumValues(std::stringstream *config, const char* tag, int index)
 787 {
 788         int ptr = 0;
 789         char buffer[MAXBUF], c_tag[MAXBUF], c, lastc;
 790         int in_token, in_quotes, tptr, idx = 0;
 791
 792         bool correct_tag = false;
 793         int num_items = 0;
 794
 795         const char* buf = config->str().c_str();
 796         long bptr = 0;
 797         long len = strlen(buf);
 798
 799         ptr = 0;
 800         in_token = 0;
 801         in_quotes = 0;
 802         lastc = '\0';
 803         while (bptr<len)
 804         {
 805                 lastc = c;
 806                 c = buf[bptr++];
 807                 if ((c == '#') && (lastc == '\n'))
 808                 {
 809                         while ((c != '\n') && (bptr<len))
 810                         {
 811                                 lastc = c;
 812                                 c = buf[bptr++];
 813                         }
 814                 }
 815                 if ((c == '<') && (!in_quotes))
 816                 {
 817                         tptr = 0;
 818                         in_token = 1;
 819                         do {
 820                                 c = buf[bptr++];
 821                                 if (c != ' ')
 822                                 {
 823                                         c_tag[tptr++] = c;
 824                                         c_tag[tptr] = '\0';
 825
 826                                         if ((!strcmp(c_tag,tag)) && (idx == index))
 827                                         {
 828                                                 correct_tag = true;
 829                                         }
 830                                 }
 831                         } while (c != ' ');
 832                 }
 833                 if (c == '"')
 834                 {
 835                         in_quotes = (!in_quotes);
 836                 }
 837
 838                 if ( (correct_tag) && (!in_quotes) && ( (c == ' ') || (c == '\n') || (c == '\r') ) )
 839                 {
 840                         num_items++;
 841                 }
 842                 if ((c == '>') && (!in_quotes))
 843                 {
 844                         in_token = 0;
 845                         if (correct_tag)
 846                                 correct_tag = false;
 847                         if (!strcmp(c_tag,tag))
 848                         {
 849                                 /* correct tag, but wrong index */
 850                                 idx++;
 851                         }
 852                         c_tag[0] = '\0';
 853                         buffer[0] = '\0';
 854                         ptr = 0;
 855                         tptr = 0;
 856                 }
 857                 if (c != '>')
 858                 {
 859                         if ((in_token) && (c != '\n') && (c != '\r'))
 860                         {
 861                                 buffer[ptr++] = c;
 862                                 buffer[ptr] = '\0';
 863                         }
 864                 }
 865         }
 866         return num_items+1;
 867 }
 868
 869
 870
 871 int ServerConfig::ConfValueEnum(char* tag, std::stringstream* config)
 872 {
 873         return EnumConf(config,tag);
 874 }
 875
 876
 877
 878 /* Retrieves a value from the config file. If there is more than one value of the specified
 879  * key and section (e.g. for opers etc) then the index value specifies which to retreive, e.g.
 880  *
 881  * ConfValue("oper","name",2,result);
 882  */
 883
 884 int ServerConfig::ReadConf(std::stringstream *config, const char* tag, const char* var, int index, char *result)
 885 {
 886         int ptr = 0;
 887         char buffer[65535], c_tag[MAXBUF], c, lastc;
 888         int in_token, in_quotes, tptr, idx = 0;
 889         char* key;
 890
 891         const char* buf = config->str().c_str();
 892         long bptr = 0;
 893         long len = config->str().length();
 894
 895         ptr = 0;
 896         in_token = 0;
 897         in_quotes = 0;
 898         lastc = '\0';
 899         c_tag[0] = '\0';
 900         buffer[0] = '\0';
 901         while (bptr<len)
 902         {
 903                 lastc = c;
 904                 c = buf[bptr++];
 905                 // FIX: Treat tabs as spaces
 906                 if (c == 9)
 907                         c = 32;
 908                 if ((c == '<') && (!in_quotes))
 909                 {
 910                         tptr = 0;
 911                         in_token = 1;
 912                         do {
 913                                 c = buf[bptr++];
 914                                 if (c != ' ')
 915                                 {
 916                                         c_tag[tptr++] = c;
 917                                         c_tag[tptr] = '\0';
 918                                 }
 919                         // FIX: Tab can follow a tagname as well as space.
 920                         } while ((c != ' ') && (c != 9));
 921                 }
 922                 if (c == '"')
 923                 {
 924                         in_quotes = (!in_quotes);
 925                 }
 926                 if ((c == '>') && (!in_quotes))
 927                 {
 928                         in_token = 0;
 929                         if (idx == index)
 930                         {
 931                                 if (!strcmp(c_tag,tag))
 932                                 {
 933                                         if ((buffer) && (c_tag) && (var))
 934                                         {
 935                                                 key = strstr(buffer,var);
 936                                                 if (!key)
 937                                                 {
 938                                                         /* value not found in tag */
 939                                                         strcpy(result,"");
 940                                                         return 0;
 941                                                 }
 942                                                 else
 943                                                 {
 944                                                         key+=strlen(var);
 945                                                         while (*key !='"')
 946                                                         {
 947                                                                 if (!*key)
 948                                                                 {
 949                                                                         /* missing quote */
 950                                                                         strcpy(result,"");
 951                                                                         return 0;
 952                                                                 }
 953                                                                 key++;
 954                                                         }
 955                                                         key++;
 956                                                         for (unsigned j = 0; j < strlen(key); j++)
 957                                                         {
 958                                                                 if (key[j] == '"')
 959                                                                 {
 960                                                                         key[j] = '\0';
 961                                                                 }
 962                                                         }
 963                                                         strlcpy(result,key,MAXBUF);
 964                                                         return 1;
 965                                                 }
 966                                         }
 967                                 }
 968                         }
 969                         if (!strcmp(c_tag,tag))
 970                         {
 971                                 /* correct tag, but wrong index */
 972                                 idx++;
 973                         }
 974                         c_tag[0] = '\0';
 975                         buffer[0] = '\0';
 976                         ptr = 0;
 977                         tptr = 0;
 978                 }
 979                 if (c != '>')
 980                 {
 981                         if ((in_token) && (c != '\n') && (c != '\r'))
 982                         {
 983                                 buffer[ptr++] = c;
 984                                 buffer[ptr] = '\0';
 985                         }
 986                 }
 987         }
 988         strcpy(result,""); // value or its tag not found at all
 989         return 0;
 990 }
 991
 992
 993
 994 int ServerConfig::ConfValue(char* tag, char* var, int index, char *result,std::stringstream *config)
 995 {
 996         ReadConf(config, tag, var, index, result);
 997         return 0;
 998 }
 999
1000
1001
1002 // This will bind a socket to a port. It works for UDP/TCP
1003 int BindSocket (int sockfd, struct sockaddr_in client, struct sockaddr_in server, int port, char* addr)
1004 {
1005         memset((char *)&server,0,sizeof(server));
1006         struct in_addr addy;
1007         inet_aton(addr,&addy);
1008         server.sin_family = AF_INET;
1009         if (!strcmp(addr,""))
1010         {
1011                 server.sin_addr.s_addr = htonl(INADDR_ANY);
1012         }
1013         else
1014         {
1015                 server.sin_addr = addy;
1016         }
1017         server.sin_port = htons(port);
1018         if (bind(sockfd,(struct sockaddr*)&server,sizeof(server))<0)
1019         {
1020                 return(ERROR);
1021         }
1022         else
1023         {
1024                 listen(sockfd, Config->MaxConn);
1025                 return(TRUE);
1026         }
1027 }
1028
1029
1030 // Open a TCP Socket
1031 int OpenTCPSocket (void)
1032 {
1033         int sockfd;
1034         int on = 1;
1035         struct linger linger = { 0 };
1036
1037         if ((sockfd = socket (AF_INET, SOCK_STREAM, 0)) < 0)
1038                 return (ERROR);
1039         else
1040         {
1041                 setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (const char*)&on, sizeof(on));
1042                 /* This is BSD compatible, setting l_onoff to 0 is *NOT* http://web.irc.org/mla/ircd-dev/msg02259.html */
1043                 linger.l_onoff = 1;
1044                 linger.l_linger = 1;
1045                 setsockopt(sockfd, SOL_SOCKET, SO_LINGER, (const char*)&linger,sizeof(linger));
1046                 return (sockfd);
1047         }
1048 }
1049
1050 int BindPorts()
1051 {
1052         char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
1053         sockaddr_in client,server;
1054         int clientportcount = 0;
1055         int BoundPortCount = 0;
1056         for (int count = 0; count < Config->ConfValueEnum("bind",&Config->config_f); count++)
1057         {
1058                 Config->ConfValue("bind","port",count,configToken,&Config->config_f);
1059                 Config->ConfValue("bind","address",count,Addr,&Config->config_f);
1060                 Config->ConfValue("bind","type",count,Type,&Config->config_f);
1061                 if (strcmp(Type,"servers"))
1062                 {
1063                         // modules handle server bind types now,
1064                         // its not a typo in the strcmp.
1065                         Config->ports[clientportcount] = atoi(configToken);
1066                         strlcpy(Config->addrs[clientportcount],Addr,256);
1067                         clientportcount++;
1068                         log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
1069                 }
1070         }
1071         int PortCount = clientportcount;
1072
1073         for (int count = 0; count < PortCount; count++)
1074         {
1075                 if ((openSockfd[BoundPortCount] = OpenTCPSocket()) == ERROR)
1076                 {
1077                         log(DEBUG,"InspIRCd: startup: bad fd %lu",(unsigned long)openSockfd[BoundPortCount]);
1078                         return(ERROR);
1079                 }
1080                 if (BindSocket(openSockfd[BoundPortCount],client,server,Config->ports[count],Config->addrs[count]) == ERROR)
1081                 {
1082                         log(DEFAULT,"InspIRCd: startup: failed to bind port %lu",(unsigned long)Config->ports[count]);
1083                 }
1084                 else    /* well we at least bound to one socket so we'll continue */
1085                 {
1086                         BoundPortCount++;
1087                 }
1088         }
1089
1090         /* if we didn't bind to anything then abort */
1091         if (!BoundPortCount)
1092         {
1093                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
1094                 printf("\nERROR: Was not able to bind any of %lu ports! Please check your configuration.\n\n", (unsigned long)PortCount);
1095                 return (ERROR);
1096         }
1097
1098         return BoundPortCount;
1099 }
1100