src/inspircd_io.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 using namespace std;
  18
  19 #include "inspircd_config.h"
  20 #include <sys/time.h>
  21 #include <sys/resource.h>
  22 #include <sys/types.h>
  23 #include <string>
  24 #include <unistd.h>
  25 #include <sstream>
  26 #include <iostream>
  27 #include <fstream>
  28 #include "inspircd.h"
  29 #include "inspircd_io.h"
  30 #include "inspstring.h"
  31 #include "helperfuncs.h"
  32 #include "userprocess.h"
  33 #include "xline.h"
  34
  35 extern ServerConfig *Config;
  36 extern InspIRCd* ServerInstance;
  37 extern int openSockfd[MAXSOCKS];
  38 extern time_t TIME;
  39
  40
  41 ServerConfig::ServerConfig()
  42 {
  43         this->ClearStack();
  44         *ServerName = *Network = *ServerDesc = *AdminName = '\0';
  45         *AdminEmail = *AdminNick = *diepass = *restartpass = '\0';
  46         *CustomVersion = *motd = *rules = *PrefixQuit = *DieValue = *DNSServer = '\0';
  47         *OperOnlyStats = *ModPath = *MyExecutable = *DisabledCommands = *PID = '\0';
  48         log_file = NULL;
  49         nofork = false;
  50         unlimitcore = false;
  51         AllowHalfop = true;
  52         dns_timeout = 5;
  53         NetBufferSize = 10240;
  54         SoftLimit = MAXCLIENTS;
  55         MaxConn = SOMAXCONN;
  56         MaxWhoResults = 100;
  57         debugging = 0;
  58         LogLevel = DEFAULT;
  59         DieDelay = 5;
  60 }
  61
  62 void ServerConfig::ClearStack()
  63 {
  64         include_stack.clear();
  65 }
  66
  67 Module* ServerConfig::GetIOHook(int port)
  68 {
  69         std::map<int,Module*>::iterator x = IOHookModule.find(port);
  70         return (x != IOHookModule.end() ? x->second : NULL);
  71 }
  72
  73 bool ServerConfig::AddIOHook(int port, Module* iomod)
  74 {
  75         if (!GetIOHook(port))
  76         {
  77                 IOHookModule[port] = iomod;
  78                 return true;
  79         }
  80         return false;
  81 }
  82
  83 bool ServerConfig::DelIOHook(int port)
  84 {
  85         std::map<int,Module*>::iterator x = IOHookModule.find(port);
  86         if (x != IOHookModule.end())
  87         {
  88                 IOHookModule.erase(x);
  89                 return true;
  90         }
  91         return false;
  92 }
  93
  94 bool ServerConfig::CheckOnce(char* tag,bool bail)
  95 {
  96         if (ConfValueEnum(tag,&Config->config_f) > 1)
  97         {
  98                 if (bail)
  99                 {
 100                         printf("There were errors in your configuration:\nYou have more than one <%s> tag, this is not permitted.\n",tag);
 101                         Exit(0);
 102                 }
 103                 else
 104                 {
 105                         if (user)
 106                         {
 107                                 WriteServ(user->fd,"There were errors in your configuration:");
 108                                 WriteServ(user->fd,"You have more than one <%s> tag, this is not permitted.\n",tag);
 109                         }
 110                         else
 111                         {
 112                                 WriteOpers("There were errors in the configuration file:");
 113                                 WriteOpers("You have more than one <%s> tag, this is not permitted.\n",tag);
 114                         }
 115                 }
 116                 return false;
 117         }
 118         return true;
 119 }
 120
 121 void ServerConfig::Read(bool bail, userrec* user)
 122 {
 123         char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF],MW[MAXBUF],MCON[MAXBUF];
 124         char AH[MAXBUF],AP[MAXBUF],AF[MAXBUF],DNT[MAXBUF],pfreq[MAXBUF],thold[MAXBUF],sqmax[MAXBUF],rqmax[MAXBUF],SLIMT[MAXBUF];
 125         ConnectClass c;
 126         std::stringstream errstr;
 127         include_stack.clear();
 128
 129         if (!LoadConf(CONFIG_FILE,&Config->config_f,&errstr))
 130         {
 131                 errstr.seekg(0);
 132                 log(DEFAULT,"There were errors in your configuration:\n%s",errstr.str().c_str());
 133                 if (bail)
 134                 {
 135                         printf("There were errors in your configuration:\n%s",errstr.str().c_str());
 136                         Exit(0);
 137                 }
 138                 else
 139                 {
 140                         char dataline[1024];
 141                         if (user)
 142                         {
 143                                 WriteServ(user->fd,"NOTICE %s :There were errors in the configuration file:",user->nick);
 144                                 while (!errstr.eof())
 145                                 {
 146                                         errstr.getline(dataline,1024);
 147                                         WriteServ(user->fd,"NOTICE %s :%s",user->nick,dataline);
 148                                 }
 149                         }
 150                         else
 151                         {
 152                                 WriteOpers("There were errors in the configuration file:");
 153                                 while (!errstr.eof())
 154                                 {
 155                                         errstr.getline(dataline,1024);
 156                                         WriteOpers(dataline);
 157                                 }
 158                         }
 159                         return;
 160                 }
 161         }
 162
 163         /* Check we dont have more than one of singular tags
 164          */
 165         if (!CheckOnce("server") || !CheckOnce("admin") || !CheckOnce("files") || !CheckOnce("power") || !CheckOnce("options")
 166                 || !CheckOnce("dns") || !CheckOnce("options") || !CheckOnce("disabled") || !CheckOnce("pid"))
 167         {
 168                 return;
 169         }
 170
 171         ConfValue("server","name",0,Config->ServerName,&Config->config_f);
 172         ConfValue("server","description",0,Config->ServerDesc,&Config->config_f);
 173         ConfValue("server","network",0,Config->Network,&Config->config_f);
 174         ConfValue("admin","name",0,Config->AdminName,&Config->config_f);
 175         ConfValue("admin","email",0,Config->AdminEmail,&Config->config_f);
 176         ConfValue("admin","nick",0,Config->AdminNick,&Config->config_f);
 177         ConfValue("files","motd",0,Config->motd,&Config->config_f);
 178         ConfValue("files","rules",0,Config->rules,&Config->config_f);
 179         ConfValue("power","diepass",0,Config->diepass,&Config->config_f);
 180         ConfValue("power","pause",0,pauseval,&Config->config_f);
 181         ConfValue("power","restartpass",0,Config->restartpass,&Config->config_f);
 182         ConfValue("options","prefixquit",0,Config->PrefixQuit,&Config->config_f);
 183         ConfValue("die","value",0,Config->DieValue,&Config->config_f);
 184         ConfValue("options","loglevel",0,dbg,&Config->config_f);
 185         ConfValue("options","netbuffersize",0,NB,&Config->config_f);
 186         ConfValue("options","maxwho",0,MW,&Config->config_f);
 187         ConfValue("options","allowhalfop",0,AH,&Config->config_f);
 188         ConfValue("options","allowprotect",0,AP,&Config->config_f);
 189         ConfValue("options","allowfounder",0,AF,&Config->config_f);
 190         ConfValue("dns","server",0,Config->DNSServer,&Config->config_f);
 191         ConfValue("dns","timeout",0,DNT,&Config->config_f);
 192         ConfValue("options","moduledir",0,Config->ModPath,&Config->config_f);
 193         ConfValue("disabled","commands",0,Config->DisabledCommands,&Config->config_f);
 194         ConfValue("options","somaxconn",0,MCON,&Config->config_f);
 195         ConfValue("options","softlimit",0,SLIMT,&Config->config_f);
 196         ConfValue("options","operonlystats",0,Config->OperOnlyStats,&Config->config_f);
 197         ConfValue("options","customversion",0,Config->CustomVersion,&Config->config_f);
 198
 199         Config->SoftLimit = atoi(SLIMT);
 200         if ((Config->SoftLimit < 1) || (Config->SoftLimit > MAXCLIENTS))
 201         {
 202                 log(DEFAULT,"WARNING: <options:softlimit> value is greater than %d or less than 0, set to %d.",MAXCLIENTS,MAXCLIENTS);
 203                 Config->SoftLimit = MAXCLIENTS;
 204         }
 205         Config->MaxConn = atoi(MCON);
 206         if (Config->MaxConn > SOMAXCONN)
 207                 log(DEFAULT,"WARNING: <options:somaxconn> value may be higher than the system-defined SOMAXCONN value!");
 208         Config->NetBufferSize = atoi(NB);
 209         Config->MaxWhoResults = atoi(MW);
 210         Config->dns_timeout = atoi(DNT);
 211         if (!Config->dns_timeout)
 212                 Config->dns_timeout = 5;
 213         if (!Config->MaxConn)
 214                 Config->MaxConn = SOMAXCONN;
 215         if (!*Config->DNSServer)
 216                 strlcpy(Config->DNSServer,"127.0.0.1",MAXBUF);
 217         if (!*Config->ModPath)
 218                 strlcpy(Config->ModPath,MOD_PATH,MAXBUF);
 219         Config->AllowHalfop = ((!strcasecmp(AH,"true")) || (!strcasecmp(AH,"1")) || (!strcasecmp(AH,"yes")));
 220         if ((!Config->NetBufferSize) || (Config->NetBufferSize > 65535) || (Config->NetBufferSize < 1024))
 221         {
 222                 log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
 223                 Config->NetBufferSize = 10240;
 224         }
 225         if ((!Config->MaxWhoResults) || (Config->MaxWhoResults > 65535) || (Config->MaxWhoResults < 1))
 226         {
 227                 log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128.");
 228                 Config->MaxWhoResults = 128;
 229         }
 230         Config->LogLevel = DEFAULT;
 231         if (!strcmp(dbg,"debug"))
 232         {
 233                 Config->LogLevel = DEBUG;
 234                 Config->debugging = 1;
 235         }
 236         if (!strcmp(dbg,"verbose"))
 237                 Config->LogLevel = VERBOSE;
 238         if (!strcmp(dbg,"default"))
 239                 Config->LogLevel = DEFAULT;
 240         if (!strcmp(dbg,"sparse"))
 241                 Config->LogLevel = SPARSE;
 242         if (!strcmp(dbg,"none"))
 243                 Config->LogLevel = NONE;
 244
 245         readfile(Config->MOTD,Config->motd);
 246         log(DEFAULT,"Reading message of the day...");
 247         readfile(Config->RULES,Config->rules);
 248         log(DEFAULT,"Reading connect classes...");
 249         Classes.clear();
 250         for (int i = 0; i < ConfValueEnum("connect",&Config->config_f); i++)
 251         {
 252                 *Value = 0;
 253                 ConfValue("connect","allow",i,Value,&Config->config_f);
 254                 ConfValue("connect","timeout",i,timeout,&Config->config_f);
 255                 ConfValue("connect","flood",i,flood,&Config->config_f);
 256                 ConfValue("connect","pingfreq",i,pfreq,&Config->config_f);
 257                 ConfValue("connect","threshold",i,thold,&Config->config_f);
 258                 ConfValue("connect","sendq",i,sqmax,&Config->config_f);
 259                 ConfValue("connect","recvq",i,rqmax,&Config->config_f);
 260                 if (*Value)
 261                 {
 262                         c.host = Value;
 263                         c.type = CC_ALLOW;
 264                         strlcpy(Value,"",MAXBUF);
 265                         ConfValue("connect","password",i,Value,&Config->config_f);
 266                         c.pass = Value;
 267                         c.registration_timeout = 90; // default is 2 minutes
 268                         c.pingtime = 120;
 269                         c.flood = atoi(flood);
 270                         c.threshold = 5;
 271                         c.sendqmax = 262144; // 256k
 272                         c.recvqmax = 4096;   // 4k
 273                         if (atoi(thold)>0)
 274                         {
 275                                 c.threshold = atoi(thold);
 276                         }
 277                         if (atoi(sqmax)>0)
 278                         {
 279                                 c.sendqmax = atoi(sqmax);
 280                         }
 281                         if (atoi(rqmax)>0)
 282                         {
 283                                 c.recvqmax = atoi(rqmax);
 284                         }
 285                         if (atoi(timeout)>0)
 286                         {
 287                                 c.registration_timeout = atoi(timeout);
 288                         }
 289                         if (atoi(pfreq)>0)
 290                         {
 291                                 c.pingtime = atoi(pfreq);
 292                         }
 293                         Classes.push_back(c);
 294                 }
 295                 else
 296                 {
 297                         ConfValue("connect","deny",i,Value,&Config->config_f);
 298                         c.host = Value;
 299                         c.type = CC_DENY;
 300                         Classes.push_back(c);
 301                         log(DEBUG,"Read connect class type DENY, host=%s",c.host.c_str());
 302                 }
 303
 304         }
 305         log(DEFAULT,"Reading K lines,Q lines and Z lines from config...");
 306         read_xline_defaults();
 307         log(DEFAULT,"Applying K lines, Q lines and Z lines...");
 308         apply_lines(APPLY_ALL);
 309
 310         ConfValue("pid","file",0,Config->PID,&Config->config_f);
 311         // write once here, to try it out and make sure its ok
 312         WritePID(Config->PID);
 313
 314         log(DEFAULT,"Done reading configuration file, InspIRCd is now starting.");
 315         if (!bail)
 316         {
 317                 log(DEFAULT,"Adding and removing modules due to rehash...");
 318
 319                 std::vector<std::string> old_module_names, new_module_names, added_modules, removed_modules;
 320
 321                 // store the old module names
 322                 for (std::vector<std::string>::iterator t = module_names.begin(); t != module_names.end(); t++)
 323                 {
 324                         old_module_names.push_back(*t);
 325                 }
 326
 327                 // get the new module names
 328                 for (int count2 = 0; count2 < ConfValueEnum("module",&Config->config_f); count2++)
 329                 {
 330                         ConfValue("module","name",count2,Value,&Config->config_f);
 331                         new_module_names.push_back(Value);
 332                 }
 333
 334                 // now create a list of new modules that are due to be loaded
 335                 // and a seperate list of modules which are due to be unloaded
 336                 for (std::vector<std::string>::iterator _new = new_module_names.begin(); _new != new_module_names.end(); _new++)
 337                 {
 338                         bool added = true;
 339                         for (std::vector<std::string>::iterator old = old_module_names.begin(); old != old_module_names.end(); old++)
 340                         {
 341                                 if (*old == *_new)
 342                                         added = false;
 343                         }
 344                         if (added)
 345                                 added_modules.push_back(*_new);
 346                 }
 347                 for (std::vector<std::string>::iterator oldm = old_module_names.begin(); oldm != old_module_names.end(); oldm++)
 348                 {
 349                         bool removed = true;
 350                         for (std::vector<std::string>::iterator newm = new_module_names.begin(); newm != new_module_names.end(); newm++)
 351                         {
 352                                 if (*newm == *oldm)
 353                                         removed = false;
 354                         }
 355                         if (removed)
 356                                 removed_modules.push_back(*oldm);
 357                 }
 358                 // now we have added_modules, a vector of modules to be loaded, and removed_modules, a vector of modules
 359                 // to be removed.
 360                 int rem = 0, add = 0;
 361                 if (!removed_modules.empty())
 362                 for (std::vector<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 363                 {
 364                         if (ServerInstance->UnloadModule(removing->c_str()))
 365                         {
 366                                 WriteOpers("*** REHASH UNLOADED MODULE: %s",removing->c_str());
 367                                 WriteServ(user->fd,"973 %s %s :Module %s successfully unloaded.",user->nick, removing->c_str(), removing->c_str());
 368                                 rem++;
 369                         }
 370                         else
 371                         {
 372                                 WriteServ(user->fd,"972 %s %s :Failed to unload module %s: %s",user->nick, removing->c_str(), removing->c_str(), ServerInstance->ModuleError());
 373                         }
 374                 }
 375                 if (!added_modules.empty())
 376                 for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 377                 {
 378                         if (ServerInstance->LoadModule(adding->c_str()))
 379                         {
 380                                 WriteOpers("*** REHASH LOADED MODULE: %s",adding->c_str());
 381                                 WriteServ(user->fd,"975 %s %s :Module %s successfully loaded.",user->nick, adding->c_str(), adding->c_str());
 382                                 add++;
 383                         }
 384                         else
 385                         {
 386                                 WriteServ(user->fd,"974 %s %s :Failed to load module %s: %s",user->nick, adding->c_str(), adding->c_str(), ServerInstance->ModuleError());
 387                         }
 388                 }
 389                 log(DEFAULT,"Successfully unloaded %lu of %lu modules and loaded %lu of %lu modules.",(unsigned long)rem,(unsigned long)removed_modules.size(),
 390                                                                                                         (unsigned long)add,(unsigned long)added_modules.size());
 391         }
 392 }
 393
 394
 395 void Exit (int status)
 396 {
 397         if (Config->log_file)
 398                 fclose(Config->log_file);
 399         send_error("Server shutdown.");
 400         exit (status);
 401 }
 402
 403 void Killed(int status)
 404 {
 405         if (Config->log_file)
 406                 fclose(Config->log_file);
 407         send_error("Server terminated.");
 408         exit(status);
 409 }
 410
 411 void Rehash(int status)
 412 {
 413         WriteOpers("Rehashing config file %s due to SIGHUP",CONFIG_FILE);
 414         fclose(Config->log_file);
 415         OpenLog(NULL,0);
 416         Config->Read(false,NULL);
 417 }
 418
 419
 420
 421 void Start (void)
 422 {
 423         printf("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
 424         printf("(C) ChatSpike Development team.\033[0m\n\n");
 425         printf("Developers:\033[1;32m     Brain, FrostyCoolSlug\033[0m\n");
 426         printf("Documentation:\033[1;32m  FrostyCoolSlug, w00t\033[0m\n");
 427         printf("Testers:\033[1;32m        typobox43, piggles, Lord_Zathras, CC\033[0m\n");
 428         printf("Name concept:\033[1;32m   Lord_Zathras\033[0m\n\n");
 429 }
 430
 431 void WritePID(std::string filename)
 432 {
 433         ofstream outfile(filename.c_str());
 434         if (outfile.is_open())
 435         {
 436                 outfile << getpid();
 437                 outfile.close();
 438         }
 439         else
 440         {
 441                 printf("Failed to write PID-file '%s', exiting.\n",filename.c_str());
 442                 log(DEFAULT,"Failed to write PID-file '%s', exiting.",filename.c_str());
 443                 Exit(0);
 444         }
 445 }
 446
 447 void SetSignals()
 448 {
 449         signal (SIGALRM, SIG_IGN);
 450         signal (SIGHUP, Rehash);
 451         signal (SIGPIPE, SIG_IGN);
 452         signal (SIGTERM, Exit);
 453         signal (SIGSEGV, Error);
 454 }
 455
 456
 457 int DaemonSeed (void)
 458 {
 459         int childpid;
 460         if ((childpid = fork ()) < 0)
 461                 return (ERROR);
 462         else if (childpid > 0)
 463                 exit (0);
 464         setsid ();
 465         umask (007);
 466         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 467
 468         setpriority(PRIO_PROCESS,(int)getpid(),15);
 469
 470         if (Config->unlimitcore)
 471         {
 472                 rlimit rl;
 473                 if (getrlimit(RLIMIT_CORE, &rl) == -1)
 474                 {
 475                         log(DEFAULT,"Failed to getrlimit()!");
 476                         return(FALSE);
 477                 }
 478                 else
 479                 {
 480                         rl.rlim_cur = rl.rlim_max;
 481                         if (setrlimit(RLIMIT_CORE, &rl) == -1)
 482                                 log(DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 483                 }
 484         }
 485
 486         return (TRUE);
 487 }
 488
 489
 490 /* Make Sure Modules Are Avaliable!
 491  * (BugFix By Craig.. See? I do work! :p)
 492  * Modified by brain, requires const char*
 493  * to work with other API functions
 494  */
 495
 496 bool FileExists (const char* file)
 497 {
 498         FILE *input;
 499         if ((input = fopen (file, "r")) == NULL)
 500         {
 501                 return(false);
 502         }
 503         else
 504         {
 505                 fclose (input);
 506                 return(true);
 507         }
 508 }
 509
 510 /* ConfProcess does the following things to a config line in the following order:
 511  *
 512  * Processes the line for syntax errors as shown below
 513  *      (1) Line void of quotes or equals (a malformed, illegal tag format)
 514  *      (2) Odd number of quotes on the line indicating a missing quote
 515  *      (3) number of equals signs not equal to number of quotes / 2 (missing an equals sign)
 516  *      (4) Spaces between the opening bracket (<) and the keyword
 517  *      (5) Spaces between a keyword and an equals sign
 518  *      (6) Spaces between an equals sign and a quote
 519  * Removes trailing spaces
 520  * Removes leading spaces
 521  * Converts tabs to spaces
 522  * Turns multiple spaces that are outside of quotes into single spaces
 523  */
 524
 525 std::string ServerConfig::ConfProcess(char* buffer, long linenumber, std::stringstream* errorstream, bool &error, std::string filename)
 526 {
 527         long number_of_quotes = 0;
 528         long number_of_equals = 0;
 529         bool has_open_bracket = false;
 530         bool in_quotes = false;
 531         error = false;
 532         if (!buffer)
 533         {
 534                 return "";
 535         }
 536         // firstly clean up the line by stripping spaces from the start and end and converting tabs to spaces
 537         for (unsigned int d = 0; d < strlen(buffer); d++)
 538                 if ((buffer[d]) == 9)
 539                         buffer[d] = ' ';
 540         while ((buffer[0] == ' ') && (strlen(buffer)>0)) buffer++;
 541         while ((buffer[strlen(buffer)-1] == ' ') && (strlen(buffer)>0)) buffer[strlen(buffer)-1] = '\0';
 542
 543         // empty lines are syntactically valid, as are comments
 544         if (!(*buffer) || buffer[0] == '#')
 545                 return "";
 546
 547         for (unsigned int c = 0; c < strlen(buffer); c++)
 548         {
 549                 // convert all spaces that are OUTSIDE quotes into hardspace (0xA0) as this will make them easier to
 550                 // search and replace later :)
 551                 if ((!in_quotes) && (buffer[c] == ' '))
 552                         buffer[c] = '\xA0';
 553                 if ((buffer[c] == '<') && (!in_quotes))
 554                 {
 555                         has_open_bracket = true;
 556                         if (strlen(buffer) == 1)
 557                         {
 558                                 *errorstream << "Tag without identifier at " << filename << ":" << linenumber << endl;
 559                                 error = true;
 560                                 return "";
 561                         }
 562                         else if ((tolower(buffer[c+1]) < 'a') || (tolower(buffer[c+1]) > 'z'))
 563                         {
 564                                 *errorstream << "Invalid characters in identifier at " << filename << ":" << linenumber << endl;
 565                                 error = true;
 566                                 return "";
 567                         }
 568                 }
 569                 if (buffer[c] == '"')
 570                 {
 571                         number_of_quotes++;
 572                         in_quotes = (!in_quotes);
 573                 }
 574                 if ((buffer[c] == '=') && (!in_quotes))
 575                 {
 576                         number_of_equals++;
 577                         if (strlen(buffer) == c)
 578                         {
 579                                 *errorstream << "Variable without a value at " << filename << ":" << linenumber << endl;
 580                                 error = true;
 581                                 return "";
 582                         }
 583                         else if (buffer[c+1] != '"')
 584                         {
 585                                 *errorstream << "Variable name not followed immediately by its value at " << filename << ":" << linenumber << endl;
 586                                 error = true;
 587                                 return "";
 588                         }
 589                         else if (!c)
 590                         {
 591                                 *errorstream << "Value without a variable (line starts with '=') at " << filename << ":" << linenumber << endl;
 592                                 error = true;
 593                                 return "";
 594                         }
 595                         else if (buffer[c-1] == '\xA0')
 596                         {
 597                                 *errorstream << "Variable name not followed immediately by its value at " << filename << ":" << linenumber << endl;
 598                                 error = true;
 599                                 return "";
 600                         }
 601                 }
 602         }
 603         // no quotes, and no equals. something freaky.
 604         if ((!number_of_quotes) || (!number_of_equals) && (strlen(buffer)>2) && (buffer[0]=='<'))
 605         {
 606                 *errorstream << "Malformed tag at " << filename << ":" << linenumber << endl;
 607                 error = true;
 608                 return "";
 609         }
 610         // odd number of quotes. thats just wrong.
 611         if ((number_of_quotes % 2) != 0)
 612         {
 613                 *errorstream << "Missing \" at " << filename << ":" << linenumber << endl;
 614                 error = true;
 615                 return "";
 616         }
 617         if (number_of_equals < (number_of_quotes/2))
 618         {
 619                 *errorstream << "Missing '=' at " << filename << ":" << linenumber << endl;
 620         }
 621         if (number_of_equals > (number_of_quotes/2))
 622         {
 623                 *errorstream << "Too many '=' at " << filename << ":" << linenumber << endl;
 624         }
 625
 626         std::string parsedata = buffer;
 627         // turn multispace into single space
 628         while (parsedata.find("\xA0\xA0") != std::string::npos)
 629         {
 630                 parsedata.erase(parsedata.find("\xA0\xA0"),1);
 631         }
 632
 633         // turn our hardspace back into softspace
 634         for (unsigned int d = 0; d < parsedata.length(); d++)
 635         {
 636                 if (parsedata[d] == '\xA0')
 637                         parsedata[d] = ' ';
 638         }
 639
 640         // and we're done, the line is fine!
 641         return parsedata;
 642 }
 643
 644 int ServerConfig::fgets_safe(char* buffer, size_t maxsize, FILE* &file)
 645 {
 646         char c_read = '\0';
 647         unsigned int bufptr = 0;
 648         while ((!feof(file)) && (c_read != '\n') && (c_read != '\r') && (bufptr < maxsize))
 649         {
 650                 c_read = fgetc(file);
 651                 if ((c_read != '\n') && (c_read != '\r'))
 652                         buffer[bufptr++] = c_read;
 653         }
 654         buffer[bufptr] = '\0';
 655         return bufptr;
 656 }
 657
 658 bool ServerConfig::LoadConf(const char* filename, std::stringstream *target, std::stringstream* errorstream)
 659 {
 660         target->str("");
 661         errorstream->str("");
 662         long linenumber = 1;
 663         // first, check that the file exists before we try to do anything with it
 664         if (!FileExists(filename))
 665         {
 666                 *errorstream << "File " << filename << " not found." << endl;
 667                 return false;
 668         }
 669         // Fix the chmod of the file to restrict it to the current user and group
 670         chmod(filename,0600);
 671         for (unsigned int t = 0; t < include_stack.size(); t++)
 672         {
 673                 if (std::string(filename) == include_stack[t])
 674                 {
 675                         *errorstream << "File " << filename << " is included recursively (looped inclusion)." << endl;
 676                         return false;
 677                 }
 678         }
 679         include_stack.push_back(filename);
 680         // now open it
 681         FILE* conf = fopen(filename,"r");
 682         char buffer[MAXBUF];
 683         if (conf)
 684         {
 685                 while (!feof(conf))
 686                 {
 687                         if (fgets_safe(buffer, MAXBUF, conf))
 688                         {
 689                                 if ((!feof(conf)) && (buffer) && (strlen(buffer)))
 690                                 {
 691                                         if ((buffer[0] != '#') && (buffer[0] != '\r')  && (buffer[0] != '\n'))
 692                                         {
 693                                                 if (!strncmp(buffer,"<include file=\"",15))
 694                                                 {
 695                                                         char* buf = buffer;
 696                                                         char confpath[10240],newconf[10240];
 697                                                         // include file directive
 698                                                         buf += 15;      // advance to filename
 699                                                         for (unsigned int j = 0; j < strlen(buf); j++)
 700                                                         {
 701                                                                 if (buf[j] == '\\')
 702                                                                         buf[j] = '/';
 703                                                                 if (buf[j] == '"')
 704                                                                 {
 705                                                                         buf[j] = '\0';
 706                                                                         break;
 707                                                                 }
 708                                                         }
 709                                                         log(DEFAULT,"Opening included file '%s'",buf);
 710                                                         if (*buf != '/')
 711                                                         {
 712                                                                 strlcpy(confpath,CONFIG_FILE,10240);
 713                                                                 if (strstr(confpath,"/inspircd.conf"))
 714                                                                 {
 715                                                                         // leaves us with just the path
 716                                                                         *(strstr(confpath,"/inspircd.conf")) = '\0';
 717                                                                 }
 718                                                                 snprintf(newconf,10240,"%s/%s",confpath,buf);
 719                                                         }
 720                                                         else strlcpy(newconf,buf,10240);
 721                                                         std::stringstream merge(stringstream::in | stringstream::out);
 722                                                         // recursively call LoadConf and get the new data, use the same errorstream
 723                                                         if (LoadConf(newconf, &merge, errorstream))
 724                                                         {
 725                                                                 // append to the end of the file
 726                                                                 std::string newstuff = merge.str();
 727                                                                 *target << newstuff;
 728                                                         }
 729                                                         else
 730                                                         {
 731                                                                 // the error propogates up to its parent recursively
 732                                                                 // causing the config reader to bail at the top level.
 733                                                                 fclose(conf);
 734                                                                 return false;
 735                                                         }
 736                                                 }
 737                                                 else
 738                                                 {
 739                                                         bool error = false;
 740                                                         std::string data = this->ConfProcess(buffer,linenumber++,errorstream,error,filename);
 741                                                         if (error)
 742                                                         {
 743                                                                 return false;
 744                                                         }
 745                                                         *target << data;
 746                                                 }
 747                                         }
 748                                         else linenumber++;
 749                                 }
 750                         }
 751                 }
 752                 fclose(conf);
 753         }
 754         target->seekg(0);
 755         return true;
 756 }
 757
 758 /* Counts the number of tags of a certain type within the config file, e.g. to enumerate opers */
 759
 760 int ServerConfig::EnumConf(std::stringstream *config, const char* tag)
 761 {
 762         int ptr = 0;
 763         char buffer[MAXBUF], c_tag[MAXBUF], c, lastc;
 764         int in_token, in_quotes, tptr, idx = 0;
 765
 766         const char* buf = config->str().c_str();
 767         long bptr = 0;
 768         long len = strlen(buf);
 769
 770         ptr = 0;
 771         in_token = 0;
 772         in_quotes = 0;
 773         lastc = '\0';
 774         while (bptr<len)
 775         {
 776                 lastc = c;
 777                 c = buf[bptr++];
 778                 if ((c == '#') && (lastc == '\n'))
 779                 {
 780                         while ((c != '\n') && (bptr<len))
 781                         {
 782                                 lastc = c;
 783                                 c = buf[bptr++];
 784                         }
 785                 }
 786                 if ((c == '<') && (!in_quotes))
 787                 {
 788                         tptr = 0;
 789                         in_token = 1;
 790                         do {
 791                                 c = buf[bptr++];
 792                                 if (c != ' ')
 793                                 {
 794                                         c_tag[tptr++] = c;
 795                                         c_tag[tptr] = '\0';
 796                                 }
 797                         } while (c != ' ');
 798                 }
 799                 if (c == '"')
 800                 {
 801                         in_quotes = (!in_quotes);
 802                 }
 803                 if ((c == '>') && (!in_quotes))
 804                 {
 805                         in_token = 0;
 806                         if (!strcmp(c_tag,tag))
 807                         {
 808                                 /* correct tag, but wrong index */
 809                                 idx++;
 810                         }
 811                         c_tag[0] = '\0';
 812                         buffer[0] = '\0';
 813                         ptr = 0;
 814                         tptr = 0;
 815                 }
 816                 if (c != '>')
 817                 {
 818                         if ((in_token) && (c != '\n') && (c != '\r'))
 819                         {
 820                                 buffer[ptr++] = c;
 821                                 buffer[ptr] = '\0';
 822                         }
 823                 }
 824         }
 825         return idx;
 826 }
 827
 828 /* Counts the number of values within a certain tag */
 829
 830 int ServerConfig::EnumValues(std::stringstream *config, const char* tag, int index)
 831 {
 832         int ptr = 0;
 833         char buffer[MAXBUF], c_tag[MAXBUF], c, lastc;
 834         int in_token, in_quotes, tptr, idx = 0;
 835
 836         bool correct_tag = false;
 837         int num_items = 0;
 838
 839         const char* buf = config->str().c_str();
 840         long bptr = 0;
 841         long len = strlen(buf);
 842
 843         ptr = 0;
 844         in_token = 0;
 845         in_quotes = 0;
 846         lastc = '\0';
 847         while (bptr<len)
 848         {
 849                 lastc = c;
 850                 c = buf[bptr++];
 851                 if ((c == '#') && (lastc == '\n'))
 852                 {
 853                         while ((c != '\n') && (bptr<len))
 854                         {
 855                                 lastc = c;
 856                                 c = buf[bptr++];
 857                         }
 858                 }
 859                 if ((c == '<') && (!in_quotes))
 860                 {
 861                         tptr = 0;
 862                         in_token = 1;
 863                         do {
 864                                 c = buf[bptr++];
 865                                 if (c != ' ')
 866                                 {
 867                                         c_tag[tptr++] = c;
 868                                         c_tag[tptr] = '\0';
 869
 870                                         if ((!strcmp(c_tag,tag)) && (idx == index))
 871                                         {
 872                                                 correct_tag = true;
 873                                         }
 874                                 }
 875                         } while (c != ' ');
 876                 }
 877                 if (c == '"')
 878                 {
 879                         in_quotes = (!in_quotes);
 880                 }
 881
 882                 if ( (correct_tag) && (!in_quotes) && ( (c == ' ') || (c == '\n') || (c == '\r') ) )
 883                 {
 884                         num_items++;
 885                 }
 886                 if ((c == '>') && (!in_quotes))
 887                 {
 888                         in_token = 0;
 889                         if (correct_tag)
 890                                 correct_tag = false;
 891                         if (!strcmp(c_tag,tag))
 892                         {
 893                                 /* correct tag, but wrong index */
 894                                 idx++;
 895                         }
 896                         c_tag[0] = '\0';
 897                         buffer[0] = '\0';
 898                         ptr = 0;
 899                         tptr = 0;
 900                 }
 901                 if (c != '>')
 902                 {
 903                         if ((in_token) && (c != '\n') && (c != '\r'))
 904                         {
 905                                 buffer[ptr++] = c;
 906                                 buffer[ptr] = '\0';
 907                         }
 908                 }
 909         }
 910         return num_items+1;
 911 }
 912
 913
 914
 915 int ServerConfig::ConfValueEnum(char* tag, std::stringstream* config)
 916 {
 917         return EnumConf(config,tag);
 918 }
 919
 920
 921
 922 /* Retrieves a value from the config file. If there is more than one value of the specified
 923  * key and section (e.g. for opers etc) then the index value specifies which to retreive, e.g.
 924  *
 925  * ConfValue("oper","name",2,result);
 926  */
 927
 928 int ServerConfig::ReadConf(std::stringstream *config, const char* tag, const char* var, int index, char *result)
 929 {
 930         int ptr = 0;
 931         char buffer[65535], c_tag[MAXBUF], c, lastc;
 932         int in_token, in_quotes, tptr, idx = 0;
 933         char* key;
 934
 935         const char* buf = config->str().c_str();
 936         long bptr = 0;
 937         long len = config->str().length();
 938
 939         ptr = 0;
 940         in_token = 0;
 941         in_quotes = 0;
 942         lastc = '\0';
 943         c_tag[0] = '\0';
 944         buffer[0] = '\0';
 945         while (bptr<len)
 946         {
 947                 lastc = c;
 948                 c = buf[bptr++];
 949                 // FIX: Treat tabs as spaces
 950                 if (c == 9)
 951                         c = 32;
 952                 if ((c == '<') && (!in_quotes))
 953                 {
 954                         tptr = 0;
 955                         in_token = 1;
 956                         do {
 957                                 c = buf[bptr++];
 958                                 if (c != ' ')
 959                                 {
 960                                         c_tag[tptr++] = c;
 961                                         c_tag[tptr] = '\0';
 962                                 }
 963                         // FIX: Tab can follow a tagname as well as space.
 964                         } while ((c != ' ') && (c != 9));
 965                 }
 966                 if (c == '"')
 967                 {
 968                         in_quotes = (!in_quotes);
 969                 }
 970                 if ((c == '>') && (!in_quotes))
 971                 {
 972                         in_token = 0;
 973                         if (idx == index)
 974                         {
 975                                 if (!strcmp(c_tag,tag))
 976                                 {
 977                                         if ((buffer) && (c_tag) && (var))
 978                                         {
 979                                                 key = strstr(buffer,var);
 980                                                 if (!key)
 981                                                 {
 982                                                         /* value not found in tag */
 983                                                         *result = 0;
 984                                                         return 0;
 985                                                 }
 986                                                 else
 987                                                 {
 988                                                         key+=strlen(var);
 989                                                         while (*key !='"')
 990                                                         {
 991                                                                 if (!*key)
 992                                                                 {
 993                                                                         /* missing quote */
 994                                                                         *result = 0;
 995                                                                         return 0;
 996                                                                 }
 997                                                                 key++;
 998                                                         }
 999                                                         key++;
1000                                                         for (unsigned j = 0; j < strlen(key); j++)
1001                                                         {
1002                                                                 if (key[j] == '"')
1003                                                                 {
1004                                                                         key[j] = '\0';
1005                                                                 }
1006                                                         }
1007                                                         strlcpy(result,key,MAXBUF);
1008                                                         return 1;
1009                                                 }
1010                                         }
1011                                 }
1012                         }
1013                         if (!strcmp(c_tag,tag))
1014                         {
1015                                 /* correct tag, but wrong index */
1016                                 idx++;
1017                         }
1018                         c_tag[0] = '\0';
1019                         buffer[0] = '\0';
1020                         ptr = 0;
1021                         tptr = 0;
1022                 }
1023                 if (c != '>')
1024                 {
1025                         if ((in_token) && (c != '\n') && (c != '\r'))
1026                         {
1027                                 buffer[ptr++] = c;
1028                                 buffer[ptr] = '\0';
1029                         }
1030                 }
1031         }
1032         *result = 0; // value or its tag not found at all
1033         return 0;
1034 }
1035
1036
1037
1038 int ServerConfig::ConfValue(char* tag, char* var, int index, char *result,std::stringstream *config)
1039 {
1040         ReadConf(config, tag, var, index, result);
1041         return 0;
1042 }
1043
1044
1045
1046 // This will bind a socket to a port. It works for UDP/TCP
1047 int BindSocket (int sockfd, struct sockaddr_in client, struct sockaddr_in server, int port, char* addr)
1048 {
1049         memset((char *)&server,0,sizeof(server));
1050         struct in_addr addy;
1051         inet_aton(addr,&addy);
1052         server.sin_family = AF_INET;
1053         if (!strcmp(addr,""))
1054         {
1055                 server.sin_addr.s_addr = htonl(INADDR_ANY);
1056         }
1057         else
1058         {
1059                 server.sin_addr = addy;
1060         }
1061         server.sin_port = htons(port);
1062         if (bind(sockfd,(struct sockaddr*)&server,sizeof(server))<0)
1063         {
1064                 return(ERROR);
1065         }
1066         else
1067         {
1068                 listen(sockfd, Config->MaxConn);
1069                 return(TRUE);
1070         }
1071 }
1072
1073
1074 // Open a TCP Socket
1075 int OpenTCPSocket (void)
1076 {
1077         int sockfd;
1078         int on = 1;
1079         struct linger linger = { 0 };
1080
1081         if ((sockfd = socket (AF_INET, SOCK_STREAM, 0)) < 0)
1082                 return (ERROR);
1083         else
1084         {
1085                 setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (const char*)&on, sizeof(on));
1086                 /* This is BSD compatible, setting l_onoff to 0 is *NOT* http://web.irc.org/mla/ircd-dev/msg02259.html */
1087                 linger.l_onoff = 1;
1088                 linger.l_linger = 1;
1089                 setsockopt(sockfd, SOL_SOCKET, SO_LINGER, (const char*)&linger,sizeof(linger));
1090                 return (sockfd);
1091         }
1092 }
1093
1094 int BindPorts()
1095 {
1096         char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
1097         sockaddr_in client,server;
1098         int clientportcount = 0;
1099         int BoundPortCount = 0;
1100         for (int count = 0; count < Config->ConfValueEnum("bind",&Config->config_f); count++)
1101         {
1102                 Config->ConfValue("bind","port",count,configToken,&Config->config_f);
1103                 Config->ConfValue("bind","address",count,Addr,&Config->config_f);
1104                 Config->ConfValue("bind","type",count,Type,&Config->config_f);
1105                 if (strcmp(Type,"servers"))
1106                 {
1107                         // modules handle server bind types now,
1108                         // its not a typo in the strcmp.
1109                         Config->ports[clientportcount] = atoi(configToken);
1110                         strlcpy(Config->addrs[clientportcount],Addr,256);
1111                         clientportcount++;
1112                         log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
1113                 }
1114         }
1115         int PortCount = clientportcount;
1116
1117         for (int count = 0; count < PortCount; count++)
1118         {
1119                 if ((openSockfd[BoundPortCount] = OpenTCPSocket()) == ERROR)
1120                 {
1121                         log(DEBUG,"InspIRCd: startup: bad fd %lu",(unsigned long)openSockfd[BoundPortCount]);
1122                         return(ERROR);
1123                 }
1124                 if (BindSocket(openSockfd[BoundPortCount],client,server,Config->ports[count],Config->addrs[count]) == ERROR)
1125                 {
1126                         log(DEFAULT,"InspIRCd: startup: failed to bind port %lu",(unsigned long)Config->ports[count]);
1127                 }
1128                 else    /* well we at least bound to one socket so we'll continue */
1129                 {
1130                         BoundPortCount++;
1131                 }
1132         }
1133
1134         /* if we didn't bind to anything then abort */
1135         if (!BoundPortCount)
1136         {
1137                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
1138                 printf("\nERROR: Was not able to bind any of %lu ports! Please check your configuration.\n\n", (unsigned long)PortCount);
1139                 return (ERROR);
1140         }
1141
1142         return BoundPortCount;
1143 }
1144