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 extern int MODCOUNT;
  41 extern std::vector<Module*> modules;
  42 extern std::vector<ircd_module*> factory;
  43
  44 ServerConfig::ServerConfig()
  45 {
  46         this->ClearStack();
  47         *ServerName = *Network = *ServerDesc = *AdminName = '\0';
  48         *AdminEmail = *AdminNick = *diepass = *restartpass = '\0';
  49         *CustomVersion = *motd = *rules = *PrefixQuit = *DieValue = *DNSServer = '\0';
  50         *OperOnlyStats = *ModPath = *MyExecutable = *DisabledCommands = *PID = '\0';
  51         log_file = NULL;
  52         nofork = false;
  53         unlimitcore = false;
  54         AllowHalfop = true;
  55         HideSplits = false;
  56         dns_timeout = 5;
  57         MaxTargets = 20;
  58         NetBufferSize = 10240;
  59         SoftLimit = MAXCLIENTS;
  60         MaxConn = SOMAXCONN;
  61         MaxWhoResults = 100;
  62         debugging = 0;
  63         LogLevel = DEFAULT;
  64         DieDelay = 5;
  65 }
  66
  67 void ServerConfig::ClearStack()
  68 {
  69         include_stack.clear();
  70 }
  71
  72 Module* ServerConfig::GetIOHook(int port)
  73 {
  74         std::map<int,Module*>::iterator x = IOHookModule.find(port);
  75         return (x != IOHookModule.end() ? x->second : NULL);
  76 }
  77
  78 bool ServerConfig::AddIOHook(int port, Module* iomod)
  79 {
  80         if (!GetIOHook(port))
  81         {
  82                 IOHookModule[port] = iomod;
  83                 return true;
  84         }
  85         return false;
  86 }
  87
  88 bool ServerConfig::DelIOHook(int port)
  89 {
  90         std::map<int,Module*>::iterator x = IOHookModule.find(port);
  91         if (x != IOHookModule.end())
  92         {
  93                 IOHookModule.erase(x);
  94                 return true;
  95         }
  96         return false;
  97 }
  98
  99 bool ServerConfig::CheckOnce(char* tag, bool bail, userrec* user)
 100 {
 101         int count = ConfValueEnum(tag,&Config->config_f);
 102         if (count > 1)
 103         {
 104                 if (bail)
 105                 {
 106                         printf("There were errors in your configuration:\nYou have more than one <%s> tag, this is not permitted.\n",tag);
 107                         Exit(0);
 108                 }
 109                 else
 110                 {
 111                         if (user)
 112                         {
 113                                 WriteServ(user->fd,"There were errors in your configuration:");
 114                                 WriteServ(user->fd,"You have more than one <%s> tag, this is not permitted.\n",tag);
 115                         }
 116                         else
 117                         {
 118                                 WriteOpers("There were errors in the configuration file:");
 119                                 WriteOpers("You have more than one <%s> tag, this is not permitted.\n",tag);
 120                         }
 121                 }
 122                 return false;
 123         }
 124         if (count < 1)
 125         {
 126                 if (bail)
 127                 {
 128                         printf("There were errors in your configuration:\nYou have not defined a <%s> tag, this is required.\n",tag);
 129                         Exit(0);
 130                 }
 131                 else
 132                 {
 133                         if (user)
 134                         {
 135                                 WriteServ(user->fd,"There were errors in your configuration:");
 136                                 WriteServ(user->fd,"You have not defined a <%s> tag, this is required.",tag);
 137                         }
 138                         else
 139                         {
 140                                 WriteOpers("There were errors in the configuration file:");
 141                                 WriteOpers("You have not defined a <%s> tag, this is required.",tag);
 142                         }
 143                 }
 144                 return false;
 145         }
 146         return true;
 147 }
 148
 149 void ServerConfig::Read(bool bail, userrec* user)
 150 {
 151         char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF],MW[MAXBUF],MCON[MAXBUF],MT[MAXBUF];
 152         char AH[MAXBUF],AP[MAXBUF],AF[MAXBUF],DNT[MAXBUF],pfreq[MAXBUF],thold[MAXBUF],sqmax[MAXBUF],rqmax[MAXBUF],SLIMT[MAXBUF];
 153         char localmax[MAXBUF],globalmax[MAXBUF],HS[MAXBUF];
 154         ConnectClass c;
 155         std::stringstream errstr;
 156         include_stack.clear();
 157
 158         if (!LoadConf(CONFIG_FILE,&Config->config_f,&errstr))
 159         {
 160                 errstr.seekg(0);
 161                 log(DEFAULT,"There were errors in your configuration:\n%s",errstr.str().c_str());
 162                 if (bail)
 163                 {
 164                         printf("There were errors in your configuration:\n%s",errstr.str().c_str());
 165                         Exit(0);
 166                 }
 167                 else
 168                 {
 169                         char dataline[1024];
 170                         if (user)
 171                         {
 172                                 WriteServ(user->fd,"NOTICE %s :There were errors in the configuration file:",user->nick);
 173                                 while (!errstr.eof())
 174                                 {
 175                                         errstr.getline(dataline,1024);
 176                                         WriteServ(user->fd,"NOTICE %s :%s",user->nick,dataline);
 177                                 }
 178                         }
 179                         else
 180                         {
 181                                 WriteOpers("There were errors in the configuration file:");
 182                                 while (!errstr.eof())
 183                                 {
 184                                         errstr.getline(dataline,1024);
 185                                         WriteOpers(dataline);
 186                                 }
 187                         }
 188                         return;
 189                 }
 190         }
 191
 192         /* Check we dont have more than one of singular tags
 193          */
 194         if (!CheckOnce("server",bail,user) || !CheckOnce("admin",bail,user) || !CheckOnce("files",bail,user)
 195                 || !CheckOnce("power",bail,user) || !CheckOnce("options",bail,user)
 196                 || !CheckOnce("dns",bail,user) || !CheckOnce("pid",bail,user))
 197         {
 198                 return;
 199         }
 200
 201         ConfValue("server","name",0,Config->ServerName,&Config->config_f);
 202         ConfValue("server","description",0,Config->ServerDesc,&Config->config_f);
 203         ConfValue("server","network",0,Config->Network,&Config->config_f);
 204         ConfValue("admin","name",0,Config->AdminName,&Config->config_f);
 205         ConfValue("admin","email",0,Config->AdminEmail,&Config->config_f);
 206         ConfValue("admin","nick",0,Config->AdminNick,&Config->config_f);
 207         ConfValue("files","motd",0,Config->motd,&Config->config_f);
 208         ConfValue("files","rules",0,Config->rules,&Config->config_f);
 209         ConfValue("power","diepass",0,Config->diepass,&Config->config_f);
 210         ConfValue("power","pause",0,pauseval,&Config->config_f);
 211         ConfValue("power","restartpass",0,Config->restartpass,&Config->config_f);
 212         ConfValue("options","prefixquit",0,Config->PrefixQuit,&Config->config_f);
 213         ConfValue("die","value",0,Config->DieValue,&Config->config_f);
 214         ConfValue("options","loglevel",0,dbg,&Config->config_f);
 215         ConfValue("options","netbuffersize",0,NB,&Config->config_f);
 216         ConfValue("options","maxwho",0,MW,&Config->config_f);
 217         ConfValue("options","allowhalfop",0,AH,&Config->config_f);
 218         ConfValue("options","allowprotect",0,AP,&Config->config_f);
 219         ConfValue("options","allowfounder",0,AF,&Config->config_f);
 220         ConfValue("dns","server",0,Config->DNSServer,&Config->config_f);
 221         ConfValue("dns","timeout",0,DNT,&Config->config_f);
 222         ConfValue("options","moduledir",0,Config->ModPath,&Config->config_f);
 223         ConfValue("disabled","commands",0,Config->DisabledCommands,&Config->config_f);
 224         ConfValue("options","somaxconn",0,MCON,&Config->config_f);
 225         ConfValue("options","softlimit",0,SLIMT,&Config->config_f);
 226         ConfValue("options","operonlystats",0,Config->OperOnlyStats,&Config->config_f);
 227         ConfValue("options","customversion",0,Config->CustomVersion,&Config->config_f);
 228         ConfValue("options","maxtargets",0,MT,&Config->config_f);
 229         ConfValue("options","hidesplits",0,HS,&Config->config_f);
 230
 231         Config->HideSplits = ((*HS == 'y') || (*HS == 'Y') || (*HS == '1') || (*HS == 't') || (*HS == 'T'));
 232         Config->SoftLimit = atoi(SLIMT);
 233         if (*MT)
 234                 Config->MaxTargets = atoi(MT);
 235         if ((Config->MaxTargets < 0) || (Config->MaxTargets > 31))
 236         {
 237                 log(DEFAULT,"WARNING: <options:maxtargets> value is greater than 31 or less than 0, set to 20.");
 238                 Config->MaxTargets = 20;
 239         }
 240         if ((Config->SoftLimit < 1) || (Config->SoftLimit > MAXCLIENTS))
 241         {
 242                 log(DEFAULT,"WARNING: <options:softlimit> value is greater than %d or less than 0, set to %d.",MAXCLIENTS,MAXCLIENTS);
 243                 Config->SoftLimit = MAXCLIENTS;
 244         }
 245         Config->MaxConn = atoi(MCON);
 246         if (Config->MaxConn > SOMAXCONN)
 247                 log(DEFAULT,"WARNING: <options:somaxconn> value may be higher than the system-defined SOMAXCONN value!");
 248         Config->NetBufferSize = atoi(NB);
 249         Config->MaxWhoResults = atoi(MW);
 250         Config->dns_timeout = atoi(DNT);
 251         if (!Config->dns_timeout)
 252                 Config->dns_timeout = 5;
 253         if (!Config->MaxConn)
 254                 Config->MaxConn = SOMAXCONN;
 255         if (!*Config->DNSServer)
 256                 strlcpy(Config->DNSServer,"127.0.0.1",MAXBUF);
 257         if (!*Config->ModPath)
 258                 strlcpy(Config->ModPath,MOD_PATH,MAXBUF);
 259         Config->AllowHalfop = ((!strcasecmp(AH,"true")) || (!strcasecmp(AH,"1")) || (!strcasecmp(AH,"yes")));
 260         if ((!Config->NetBufferSize) || (Config->NetBufferSize > 65535) || (Config->NetBufferSize < 1024))
 261         {
 262                 log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
 263                 Config->NetBufferSize = 10240;
 264         }
 265         if ((!Config->MaxWhoResults) || (Config->MaxWhoResults > 65535) || (Config->MaxWhoResults < 1))
 266         {
 267                 log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128.");
 268                 Config->MaxWhoResults = 128;
 269         }
 270         Config->LogLevel = DEFAULT;
 271         if (!strcmp(dbg,"debug"))
 272         {
 273                 Config->LogLevel = DEBUG;
 274                 Config->debugging = 1;
 275         }
 276         if (!strcmp(dbg,"verbose"))
 277                 Config->LogLevel = VERBOSE;
 278         if (!strcmp(dbg,"default"))
 279                 Config->LogLevel = DEFAULT;
 280         if (!strcmp(dbg,"sparse"))
 281                 Config->LogLevel = SPARSE;
 282         if (!strcmp(dbg,"none"))
 283                 Config->LogLevel = NONE;
 284
 285         readfile(Config->MOTD,Config->motd);
 286         log(DEFAULT,"Reading message of the day...");
 287         readfile(Config->RULES,Config->rules);
 288         log(DEFAULT,"Reading connect classes...");
 289         Classes.clear();
 290         for (int i = 0; i < ConfValueEnum("connect",&Config->config_f); i++)
 291         {
 292                 *Value = 0;
 293                 ConfValue("connect","allow",i,Value,&Config->config_f);
 294                 ConfValue("connect","timeout",i,timeout,&Config->config_f);
 295                 ConfValue("connect","flood",i,flood,&Config->config_f);
 296                 ConfValue("connect","pingfreq",i,pfreq,&Config->config_f);
 297                 ConfValue("connect","threshold",i,thold,&Config->config_f);
 298                 ConfValue("connect","sendq",i,sqmax,&Config->config_f);
 299                 ConfValue("connect","recvq",i,rqmax,&Config->config_f);
 300                 ConfValue("connect","localmax",i,localmax,&Config->config_f);
 301                 ConfValue("connect","globalmax",i,globalmax,&Config->config_f);
 302                 if (*Value)
 303                 {
 304                         c.host = Value;
 305                         c.type = CC_ALLOW;
 306                         strlcpy(Value,"",MAXBUF);
 307                         ConfValue("connect","password",i,Value,&Config->config_f);
 308                         c.pass = Value;
 309                         c.registration_timeout = 90; // default is 2 minutes
 310                         c.pingtime = 120;
 311                         c.flood = atoi(flood);
 312                         c.threshold = 5;
 313                         c.sendqmax = 262144; // 256k
 314                         c.recvqmax = 4096;   // 4k
 315                         c.maxlocal = 3;
 316                         c.maxglobal = 3;
 317                         if (atoi(localmax)>0)
 318                         {
 319                                 c.maxlocal = atoi(localmax);
 320                         }
 321                         if (atoi(globalmax)>0)
 322                         {
 323                                 c.maxglobal = atoi(globalmax);
 324                         }
 325                         if (atoi(thold)>0)
 326                         {
 327                                 c.threshold = atoi(thold);
 328                         }
 329                         if (atoi(sqmax)>0)
 330                         {
 331                                 c.sendqmax = atoi(sqmax);
 332                         }
 333                         if (atoi(rqmax)>0)
 334                         {
 335                                 c.recvqmax = atoi(rqmax);
 336                         }
 337                         if (atoi(timeout)>0)
 338                         {
 339                                 c.registration_timeout = atoi(timeout);
 340                         }
 341                         if (atoi(pfreq)>0)
 342                         {
 343                                 c.pingtime = atoi(pfreq);
 344                         }
 345                         Classes.push_back(c);
 346                 }
 347                 else
 348                 {
 349                         ConfValue("connect","deny",i,Value,&Config->config_f);
 350                         c.host = Value;
 351                         c.type = CC_DENY;
 352                         Classes.push_back(c);
 353                         log(DEBUG,"Read connect class type DENY, host=%s",c.host.c_str());
 354                 }
 355
 356         }
 357         log(DEFAULT,"Reading K lines,Q lines and Z lines from config...");
 358         read_xline_defaults();
 359         log(DEFAULT,"Applying K lines, Q lines and Z lines...");
 360         apply_lines(APPLY_ALL);
 361
 362         ConfValue("pid","file",0,Config->PID,&Config->config_f);
 363         // write once here, to try it out and make sure its ok
 364         WritePID(Config->PID);
 365
 366         log(DEFAULT,"Done reading configuration file, InspIRCd is now starting.");
 367         if (!bail)
 368         {
 369                 log(DEFAULT,"Adding and removing modules due to rehash...");
 370
 371                 std::vector<std::string> old_module_names, new_module_names, added_modules, removed_modules;
 372
 373                 // store the old module names
 374                 for (std::vector<std::string>::iterator t = module_names.begin(); t != module_names.end(); t++)
 375                 {
 376                         old_module_names.push_back(*t);
 377                 }
 378
 379                 // get the new module names
 380                 for (int count2 = 0; count2 < ConfValueEnum("module",&Config->config_f); count2++)
 381                 {
 382                         ConfValue("module","name",count2,Value,&Config->config_f);
 383                         new_module_names.push_back(Value);
 384                 }
 385
 386                 // now create a list of new modules that are due to be loaded
 387                 // and a seperate list of modules which are due to be unloaded
 388                 for (std::vector<std::string>::iterator _new = new_module_names.begin(); _new != new_module_names.end(); _new++)
 389                 {
 390                         bool added = true;
 391                         for (std::vector<std::string>::iterator old = old_module_names.begin(); old != old_module_names.end(); old++)
 392                         {
 393                                 if (*old == *_new)
 394                                         added = false;
 395                         }
 396                         if (added)
 397                                 added_modules.push_back(*_new);
 398                 }
 399                 for (std::vector<std::string>::iterator oldm = old_module_names.begin(); oldm != old_module_names.end(); oldm++)
 400                 {
 401                         bool removed = true;
 402                         for (std::vector<std::string>::iterator newm = new_module_names.begin(); newm != new_module_names.end(); newm++)
 403                         {
 404                                 if (*newm == *oldm)
 405                                         removed = false;
 406                         }
 407                         if (removed)
 408                                 removed_modules.push_back(*oldm);
 409                 }
 410                 // now we have added_modules, a vector of modules to be loaded, and removed_modules, a vector of modules
 411                 // to be removed.
 412                 int rem = 0, add = 0;
 413                 if (!removed_modules.empty())
 414                 for (std::vector<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 415                 {
 416                         if (ServerInstance->UnloadModule(removing->c_str()))
 417                         {
 418                                 WriteOpers("*** REHASH UNLOADED MODULE: %s",removing->c_str());
 419                                 WriteServ(user->fd,"973 %s %s :Module %s successfully unloaded.",user->nick, removing->c_str(), removing->c_str());
 420                                 rem++;
 421                         }
 422                         else
 423                         {
 424                                 WriteServ(user->fd,"972 %s %s :Failed to unload module %s: %s",user->nick, removing->c_str(), removing->c_str(), ServerInstance->ModuleError());
 425                         }
 426                 }
 427                 if (!added_modules.empty())
 428                 for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 429                 {
 430                         if (ServerInstance->LoadModule(adding->c_str()))
 431                         {
 432                                 WriteOpers("*** REHASH LOADED MODULE: %s",adding->c_str());
 433                                 WriteServ(user->fd,"975 %s %s :Module %s successfully loaded.",user->nick, adding->c_str(), adding->c_str());
 434                                 add++;
 435                         }
 436                         else
 437                         {
 438                                 WriteServ(user->fd,"974 %s %s :Failed to load module %s: %s",user->nick, adding->c_str(), adding->c_str(), ServerInstance->ModuleError());
 439                         }
 440                 }
 441                 log(DEFAULT,"Successfully unloaded %lu of %lu modules and loaded %lu of %lu modules.",(unsigned long)rem,(unsigned long)removed_modules.size(),
 442                                                                                                         (unsigned long)add,(unsigned long)added_modules.size());
 443         }
 444 }
 445
 446
 447 void Exit (int status)
 448 {
 449         if (Config->log_file)
 450                 fclose(Config->log_file);
 451         send_error("Server shutdown.");
 452         exit (status);
 453 }
 454
 455 void Killed(int status)
 456 {
 457         if (Config->log_file)
 458                 fclose(Config->log_file);
 459         send_error("Server terminated.");
 460         exit(status);
 461 }
 462
 463 char* CleanFilename(char* name)
 464 {
 465         char* p = name + strlen(name);
 466         while ((p != name) && (*p != '/')) p--;
 467         return (p != name ? ++p : p);
 468 }
 469
 470
 471 void Rehash(int status)
 472 {
 473         WriteOpers("Rehashing config file %s due to SIGHUP",CleanFilename(CONFIG_FILE));
 474         fclose(Config->log_file);
 475         OpenLog(NULL,0);
 476         Config->Read(false,NULL);
 477         FOREACH_MOD(I_OnRehash,OnRehash(""));
 478 }
 479
 480
 481
 482 void Start (void)
 483 {
 484         printf("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
 485         printf("(C) ChatSpike Development team.\033[0m\n\n");
 486         printf("Developers:\033[1;32m     Brain, FrostyCoolSlug\033[0m\n");
 487         printf("Documentation:\033[1;32m  FrostyCoolSlug, w00t\033[0m\n");
 488         printf("Testers:\033[1;32m        typobox43, piggles, Lord_Zathras, CC\033[0m\n");
 489         printf("Name concept:\033[1;32m   Lord_Zathras\033[0m\n\n");
 490 }
 491
 492 void WritePID(std::string filename)
 493 {
 494         ofstream outfile(filename.c_str());
 495         if (outfile.is_open())
 496         {
 497                 outfile << getpid();
 498                 outfile.close();
 499         }
 500         else
 501         {
 502                 printf("Failed to write PID-file '%s', exiting.\n",filename.c_str());
 503                 log(DEFAULT,"Failed to write PID-file '%s', exiting.",filename.c_str());
 504                 Exit(0);
 505         }
 506 }
 507
 508 void SetSignals()
 509 {
 510         signal (SIGALRM, SIG_IGN);
 511         signal (SIGHUP, Rehash);
 512         signal (SIGPIPE, SIG_IGN);
 513         signal (SIGTERM, Exit);
 514         signal (SIGSEGV, Error);
 515 }
 516
 517
 518 int DaemonSeed (void)
 519 {
 520         int childpid;
 521         if ((childpid = fork ()) < 0)
 522                 return (ERROR);
 523         else if (childpid > 0)
 524                 exit (0);
 525         setsid ();
 526         umask (007);
 527         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 528
 529         setpriority(PRIO_PROCESS,(int)getpid(),15);
 530
 531         if (Config->unlimitcore)
 532         {
 533                 rlimit rl;
 534                 if (getrlimit(RLIMIT_CORE, &rl) == -1)
 535                 {
 536                         log(DEFAULT,"Failed to getrlimit()!");
 537                         return(FALSE);
 538                 }
 539                 else
 540                 {
 541                         rl.rlim_cur = rl.rlim_max;
 542                         if (setrlimit(RLIMIT_CORE, &rl) == -1)
 543                                 log(DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 544                 }
 545         }
 546
 547         return (TRUE);
 548 }
 549
 550
 551 /* Make Sure Modules Are Avaliable!
 552  * (BugFix By Craig.. See? I do work! :p)
 553  * Modified by brain, requires const char*
 554  * to work with other API functions
 555  */
 556
 557 bool FileExists (const char* file)
 558 {
 559         FILE *input;
 560         if ((input = fopen (file, "r")) == NULL)
 561         {
 562                 return(false);
 563         }
 564         else
 565         {
 566                 fclose (input);
 567                 return(true);
 568         }
 569 }
 570
 571 /* ConfProcess does the following things to a config line in the following order:
 572  *
 573  * Processes the line for syntax errors as shown below
 574  *      (1) Line void of quotes or equals (a malformed, illegal tag format)
 575  *      (2) Odd number of quotes on the line indicating a missing quote
 576  *      (3) number of equals signs not equal to number of quotes / 2 (missing an equals sign)
 577  *      (4) Spaces between the opening bracket (<) and the keyword
 578  *      (5) Spaces between a keyword and an equals sign
 579  *      (6) Spaces between an equals sign and a quote
 580  * Removes trailing spaces
 581  * Removes leading spaces
 582  * Converts tabs to spaces
 583  * Turns multiple spaces that are outside of quotes into single spaces
 584  */
 585
 586 std::string ServerConfig::ConfProcess(char* buffer, long linenumber, std::stringstream* errorstream, bool &error, std::string filename)
 587 {
 588         long number_of_quotes = 0;
 589         long number_of_equals = 0;
 590         bool has_open_bracket = false;
 591         bool in_quotes = false;
 592         error = false;
 593         if (!buffer)
 594         {
 595                 return "";
 596         }
 597         // firstly clean up the line by stripping spaces from the start and end and converting tabs to spaces
 598         for (unsigned int d = 0; d < strlen(buffer); d++)
 599                 if ((buffer[d]) == 9)
 600                         buffer[d] = ' ';
 601         while ((buffer[0] == ' ') && (strlen(buffer)>0)) buffer++;
 602         while ((buffer[strlen(buffer)-1] == ' ') && (strlen(buffer)>0)) buffer[strlen(buffer)-1] = '\0';
 603
 604         // empty lines are syntactically valid, as are comments
 605         if (!(*buffer) || buffer[0] == '#')
 606                 return "";
 607
 608         for (unsigned int c = 0; c < strlen(buffer); c++)
 609         {
 610                 // convert all spaces that are OUTSIDE quotes into hardspace (0xA0) as this will make them easier to
 611                 // search and replace later :)
 612                 if ((!in_quotes) && (buffer[c] == ' '))
 613                         buffer[c] = '\xA0';
 614                 if ((buffer[c] == '<') && (!in_quotes))
 615                 {
 616                         has_open_bracket = true;
 617                         if (strlen(buffer) == 1)
 618                         {
 619                                 *errorstream << "Tag without identifier at " << filename << ":" << linenumber << endl;
 620                                 error = true;
 621                                 return "";
 622                         }
 623                         else if ((tolower(buffer[c+1]) < 'a') || (tolower(buffer[c+1]) > 'z'))
 624                         {
 625                                 *errorstream << "Invalid characters in identifier at " << filename << ":" << linenumber << endl;
 626                                 error = true;
 627                                 return "";
 628                         }
 629                 }
 630                 if (buffer[c] == '"')
 631                 {
 632                         number_of_quotes++;
 633                         in_quotes = (!in_quotes);
 634                 }
 635                 if ((buffer[c] == '=') && (!in_quotes))
 636                 {
 637                         number_of_equals++;
 638                         if (strlen(buffer) == c)
 639                         {
 640                                 *errorstream << "Variable without a value at " << filename << ":" << linenumber << endl;
 641                                 error = true;
 642                                 return "";
 643                         }
 644                         else if (buffer[c+1] != '"')
 645                         {
 646                                 *errorstream << "Variable name not followed immediately by its value at " << filename << ":" << linenumber << endl;
 647                                 error = true;
 648                                 return "";
 649                         }
 650                         else if (!c)
 651                         {
 652                                 *errorstream << "Value without a variable (line starts with '=') at " << filename << ":" << linenumber << endl;
 653                                 error = true;
 654                                 return "";
 655                         }
 656                         else if (buffer[c-1] == '\xA0')
 657                         {
 658                                 *errorstream << "Variable name not followed immediately by its value at " << filename << ":" << linenumber << endl;
 659                                 error = true;
 660                                 return "";
 661                         }
 662                 }
 663         }
 664         // no quotes, and no equals. something freaky.
 665         if ((!number_of_quotes) || (!number_of_equals) && (strlen(buffer)>2) && (buffer[0]=='<'))
 666         {
 667                 *errorstream << "Malformed tag at " << filename << ":" << linenumber << endl;
 668                 error = true;
 669                 return "";
 670         }
 671         // odd number of quotes. thats just wrong.
 672         if ((number_of_quotes % 2) != 0)
 673         {
 674                 *errorstream << "Missing \" at " << filename << ":" << linenumber << endl;
 675                 error = true;
 676                 return "";
 677         }
 678         if (number_of_equals < (number_of_quotes/2))
 679         {
 680                 *errorstream << "Missing '=' at " << filename << ":" << linenumber << endl;
 681         }
 682         if (number_of_equals > (number_of_quotes/2))
 683         {
 684                 *errorstream << "Too many '=' at " << filename << ":" << linenumber << endl;
 685         }
 686
 687         std::string parsedata = buffer;
 688         // turn multispace into single space
 689         while (parsedata.find("\xA0\xA0") != std::string::npos)
 690         {
 691                 parsedata.erase(parsedata.find("\xA0\xA0"),1);
 692         }
 693
 694         // turn our hardspace back into softspace
 695         for (unsigned int d = 0; d < parsedata.length(); d++)
 696         {
 697                 if (parsedata[d] == '\xA0')
 698                         parsedata[d] = ' ';
 699         }
 700
 701         // and we're done, the line is fine!
 702         return parsedata;
 703 }
 704
 705 int ServerConfig::fgets_safe(char* buffer, size_t maxsize, FILE* &file)
 706 {
 707         char c_read = '\0';
 708         unsigned int bufptr = 0;
 709         while ((!feof(file)) && (c_read != '\n') && (c_read != '\r') && (bufptr < maxsize))
 710         {
 711                 c_read = fgetc(file);
 712                 if ((c_read != '\n') && (c_read != '\r'))
 713                         buffer[bufptr++] = c_read;
 714         }
 715         buffer[bufptr] = '\0';
 716         return bufptr;
 717 }
 718
 719 bool ServerConfig::LoadConf(const char* filename, std::stringstream *target, std::stringstream* errorstream)
 720 {
 721         target->str("");
 722         errorstream->str("");
 723         long linenumber = 1;
 724         // first, check that the file exists before we try to do anything with it
 725         if (!FileExists(filename))
 726         {
 727                 *errorstream << "File " << filename << " not found." << endl;
 728                 return false;
 729         }
 730         // Fix the chmod of the file to restrict it to the current user and group
 731         chmod(filename,0600);
 732         for (unsigned int t = 0; t < include_stack.size(); t++)
 733         {
 734                 if (std::string(filename) == include_stack[t])
 735                 {
 736                         *errorstream << "File " << filename << " is included recursively (looped inclusion)." << endl;
 737                         return false;
 738                 }
 739         }
 740         include_stack.push_back(filename);
 741         // now open it
 742         FILE* conf = fopen(filename,"r");
 743         char buffer[MAXBUF];
 744         if (conf)
 745         {
 746                 while (!feof(conf))
 747                 {
 748                         if (fgets_safe(buffer, MAXBUF, conf))
 749                         {
 750                                 if ((!feof(conf)) && (buffer) && (strlen(buffer)))
 751                                 {
 752                                         if ((buffer[0] != '#') && (buffer[0] != '\r')  && (buffer[0] != '\n'))
 753                                         {
 754                                                 if (!strncmp(buffer,"<include file=\"",15))
 755                                                 {
 756                                                         char* buf = buffer;
 757                                                         char confpath[10240],newconf[10240];
 758                                                         // include file directive
 759                                                         buf += 15;      // advance to filename
 760                                                         for (unsigned int j = 0; j < strlen(buf); j++)
 761                                                         {
 762                                                                 if (buf[j] == '\\')
 763                                                                         buf[j] = '/';
 764                                                                 if (buf[j] == '"')
 765                                                                 {
 766                                                                         buf[j] = '\0';
 767                                                                         break;
 768                                                                 }
 769                                                         }
 770                                                         log(DEFAULT,"Opening included file '%s'",buf);
 771                                                         if (*buf != '/')
 772                                                         {
 773                                                                 strlcpy(confpath,CONFIG_FILE,10240);
 774                                                                 if (strstr(confpath,"/inspircd.conf"))
 775                                                                 {
 776                                                                         // leaves us with just the path
 777                                                                         *(strstr(confpath,"/inspircd.conf")) = '\0';
 778                                                                 }
 779                                                                 snprintf(newconf,10240,"%s/%s",confpath,buf);
 780                                                         }
 781                                                         else strlcpy(newconf,buf,10240);
 782                                                         std::stringstream merge(stringstream::in | stringstream::out);
 783                                                         // recursively call LoadConf and get the new data, use the same errorstream
 784                                                         if (LoadConf(newconf, &merge, errorstream))
 785                                                         {
 786                                                                 // append to the end of the file
 787                                                                 std::string newstuff = merge.str();
 788                                                                 *target << newstuff;
 789                                                         }
 790                                                         else
 791                                                         {
 792                                                                 // the error propogates up to its parent recursively
 793                                                                 // causing the config reader to bail at the top level.
 794                                                                 fclose(conf);
 795                                                                 return false;
 796                                                         }
 797                                                 }
 798                                                 else
 799                                                 {
 800                                                         bool error = false;
 801                                                         std::string data = this->ConfProcess(buffer,linenumber++,errorstream,error,filename);
 802                                                         if (error)
 803                                                         {
 804                                                                 return false;
 805                                                         }
 806                                                         *target << data;
 807                                                 }
 808                                         }
 809                                         else linenumber++;
 810                                 }
 811                         }
 812                 }
 813                 fclose(conf);
 814         }
 815         target->seekg(0);
 816         return true;
 817 }
 818
 819 /* Counts the number of tags of a certain type within the config file, e.g. to enumerate opers */
 820
 821 int ServerConfig::EnumConf(std::stringstream *config, const char* tag)
 822 {
 823         int ptr = 0;
 824         char buffer[MAXBUF], c_tag[MAXBUF], c, lastc;
 825         int in_token, in_quotes, tptr, idx = 0;
 826
 827         const char* buf = config->str().c_str();
 828         long bptr = 0;
 829         long len = strlen(buf);
 830
 831         ptr = 0;
 832         in_token = 0;
 833         in_quotes = 0;
 834         lastc = '\0';
 835         while (bptr<len)
 836         {
 837                 lastc = c;
 838                 c = buf[bptr++];
 839                 if ((c == '#') && (lastc == '\n'))
 840                 {
 841                         while ((c != '\n') && (bptr<len))
 842                         {
 843                                 lastc = c;
 844                                 c = buf[bptr++];
 845                         }
 846                 }
 847                 if ((c == '<') && (!in_quotes))
 848                 {
 849                         tptr = 0;
 850                         in_token = 1;
 851                         do {
 852                                 c = buf[bptr++];
 853                                 if (c != ' ')
 854                                 {
 855                                         c_tag[tptr++] = c;
 856                                         c_tag[tptr] = '\0';
 857                                 }
 858                         } while (c != ' ');
 859                 }
 860                 if (c == '"')
 861                 {
 862                         in_quotes = (!in_quotes);
 863                 }
 864                 if ((c == '>') && (!in_quotes))
 865                 {
 866                         in_token = 0;
 867                         if (!strcmp(c_tag,tag))
 868                         {
 869                                 /* correct tag, but wrong index */
 870                                 idx++;
 871                         }
 872                         c_tag[0] = '\0';
 873                         buffer[0] = '\0';
 874                         ptr = 0;
 875                         tptr = 0;
 876                 }
 877                 if (c != '>')
 878                 {
 879                         if ((in_token) && (c != '\n') && (c != '\r'))
 880                         {
 881                                 buffer[ptr++] = c;
 882                                 buffer[ptr] = '\0';
 883                         }
 884                 }
 885         }
 886         return idx;
 887 }
 888
 889 /* Counts the number of values within a certain tag */
 890
 891 int ServerConfig::EnumValues(std::stringstream *config, const char* tag, int index)
 892 {
 893         int ptr = 0;
 894         char buffer[MAXBUF], c_tag[MAXBUF], c, lastc;
 895         int in_token, in_quotes, tptr, idx = 0;
 896
 897         bool correct_tag = false;
 898         int num_items = 0;
 899
 900         const char* buf = config->str().c_str();
 901         long bptr = 0;
 902         long len = strlen(buf);
 903
 904         ptr = 0;
 905         in_token = 0;
 906         in_quotes = 0;
 907         lastc = '\0';
 908         while (bptr<len)
 909         {
 910                 lastc = c;
 911                 c = buf[bptr++];
 912                 if ((c == '#') && (lastc == '\n'))
 913                 {
 914                         while ((c != '\n') && (bptr<len))
 915                         {
 916                                 lastc = c;
 917                                 c = buf[bptr++];
 918                         }
 919                 }
 920                 if ((c == '<') && (!in_quotes))
 921                 {
 922                         tptr = 0;
 923                         in_token = 1;
 924                         do {
 925                                 c = buf[bptr++];
 926                                 if (c != ' ')
 927                                 {
 928                                         c_tag[tptr++] = c;
 929                                         c_tag[tptr] = '\0';
 930
 931                                         if ((!strcmp(c_tag,tag)) && (idx == index))
 932                                         {
 933                                                 correct_tag = true;
 934                                         }
 935                                 }
 936                         } while (c != ' ');
 937                 }
 938                 if (c == '"')
 939                 {
 940                         in_quotes = (!in_quotes);
 941                 }
 942
 943                 if ( (correct_tag) && (!in_quotes) && ( (c == ' ') || (c == '\n') || (c == '\r') ) )
 944                 {
 945                         num_items++;
 946                 }
 947                 if ((c == '>') && (!in_quotes))
 948                 {
 949                         in_token = 0;
 950                         if (correct_tag)
 951                                 correct_tag = false;
 952                         if (!strcmp(c_tag,tag))
 953                         {
 954                                 /* correct tag, but wrong index */
 955                                 idx++;
 956                         }
 957                         c_tag[0] = '\0';
 958                         buffer[0] = '\0';
 959                         ptr = 0;
 960                         tptr = 0;
 961                 }
 962                 if (c != '>')
 963                 {
 964                         if ((in_token) && (c != '\n') && (c != '\r'))
 965                         {
 966                                 buffer[ptr++] = c;
 967                                 buffer[ptr] = '\0';
 968                         }
 969                 }
 970         }
 971         return num_items+1;
 972 }
 973
 974
 975
 976 int ServerConfig::ConfValueEnum(char* tag, std::stringstream* config)
 977 {
 978         return EnumConf(config,tag);
 979 }
 980
 981
 982
 983 /* Retrieves a value from the config file. If there is more than one value of the specified
 984  * key and section (e.g. for opers etc) then the index value specifies which to retreive, e.g.
 985  *
 986  * ConfValue("oper","name",2,result);
 987  */
 988
 989 int ServerConfig::ReadConf(std::stringstream *config, const char* tag, const char* var, int index, char *result)
 990 {
 991         int ptr = 0;
 992         char buffer[65535], c_tag[MAXBUF], c, lastc;
 993         int in_token, in_quotes, tptr, idx = 0;
 994         char* key;
 995
 996         const char* buf = config->str().c_str();
 997         long bptr = 0;
 998         long len = config->str().length();
 999
1000         ptr = 0;
1001         in_token = 0;
1002         in_quotes = 0;
1003         lastc = '\0';
1004         c_tag[0] = '\0';
1005         buffer[0] = '\0';
1006         while (bptr<len)
1007         {
1008                 lastc = c;
1009                 c = buf[bptr++];
1010                 // FIX: Treat tabs as spaces
1011                 if (c == 9)
1012                         c = 32;
1013                 if ((c == '<') && (!in_quotes))
1014                 {
1015                         tptr = 0;
1016                         in_token = 1;
1017                         do {
1018                                 c = buf[bptr++];
1019                                 if (c != ' ')
1020                                 {
1021                                         c_tag[tptr++] = c;
1022                                         c_tag[tptr] = '\0';
1023                                 }
1024                         // FIX: Tab can follow a tagname as well as space.
1025                         } while ((c != ' ') && (c != 9));
1026                 }
1027                 if (c == '"')
1028                 {
1029                         in_quotes = (!in_quotes);
1030                 }
1031                 if ((c == '>') && (!in_quotes))
1032                 {
1033                         in_token = 0;
1034                         if (idx == index)
1035                         {
1036                                 if (!strcmp(c_tag,tag))
1037                                 {
1038                                         if ((buffer) && (c_tag) && (var))
1039                                         {
1040                                                 key = strstr(buffer,var);
1041                                                 if (!key)
1042                                                 {
1043                                                         /* value not found in tag */
1044                                                         *result = 0;
1045                                                         return 0;
1046                                                 }
1047                                                 else
1048                                                 {
1049                                                         key+=strlen(var);
1050                                                         while (*key !='"')
1051                                                         {
1052                                                                 if (!*key)
1053                                                                 {
1054                                                                         /* missing quote */
1055                                                                         *result = 0;
1056                                                                         return 0;
1057                                                                 }
1058                                                                 key++;
1059                                                         }
1060                                                         key++;
1061                                                         for (unsigned j = 0; j < strlen(key); j++)
1062                                                         {
1063                                                                 if (key[j] == '"')
1064                                                                 {
1065                                                                         key[j] = '\0';
1066                                                                 }
1067                                                         }
1068                                                         strlcpy(result,key,MAXBUF);
1069                                                         return 1;
1070                                                 }
1071                                         }
1072                                 }
1073                         }
1074                         if (!strcmp(c_tag,tag))
1075                         {
1076                                 /* correct tag, but wrong index */
1077                                 idx++;
1078                         }
1079                         c_tag[0] = '\0';
1080                         buffer[0] = '\0';
1081                         ptr = 0;
1082                         tptr = 0;
1083                 }
1084                 if (c != '>')
1085                 {
1086                         if ((in_token) && (c != '\n') && (c != '\r'))
1087                         {
1088                                 buffer[ptr++] = c;
1089                                 buffer[ptr] = '\0';
1090                         }
1091                 }
1092         }
1093         *result = 0; // value or its tag not found at all
1094         return 0;
1095 }
1096
1097
1098
1099 int ServerConfig::ConfValue(char* tag, char* var, int index, char *result,std::stringstream *config)
1100 {
1101         ReadConf(config, tag, var, index, result);
1102         return 0;
1103 }
1104
1105
1106
1107 // This will bind a socket to a port. It works for UDP/TCP
1108 int BindSocket (int sockfd, struct sockaddr_in client, struct sockaddr_in server, int port, char* addr)
1109 {
1110         memset((char *)&server,0,sizeof(server));
1111         struct in_addr addy;
1112         inet_aton(addr,&addy);
1113         server.sin_family = AF_INET;
1114         if (!strcmp(addr,""))
1115         {
1116                 server.sin_addr.s_addr = htonl(INADDR_ANY);
1117         }
1118         else
1119         {
1120                 server.sin_addr = addy;
1121         }
1122         server.sin_port = htons(port);
1123         if (bind(sockfd,(struct sockaddr*)&server,sizeof(server))<0)
1124         {
1125                 return(ERROR);
1126         }
1127         else
1128         {
1129                 listen(sockfd, Config->MaxConn);
1130                 return(TRUE);
1131         }
1132 }
1133
1134
1135 // Open a TCP Socket
1136 int OpenTCPSocket (void)
1137 {
1138         int sockfd;
1139         int on = 1;
1140         struct linger linger = { 0 };
1141
1142         if ((sockfd = socket (AF_INET, SOCK_STREAM, 0)) < 0)
1143                 return (ERROR);
1144         else
1145         {
1146                 setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (const char*)&on, sizeof(on));
1147                 /* This is BSD compatible, setting l_onoff to 0 is *NOT* http://web.irc.org/mla/ircd-dev/msg02259.html */
1148                 linger.l_onoff = 1;
1149                 linger.l_linger = 1;
1150                 setsockopt(sockfd, SOL_SOCKET, SO_LINGER, (const char*)&linger,sizeof(linger));
1151                 return (sockfd);
1152         }
1153 }
1154
1155 int BindPorts()
1156 {
1157         char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
1158         sockaddr_in client,server;
1159         int clientportcount = 0;
1160         int BoundPortCount = 0;
1161         for (int count = 0; count < Config->ConfValueEnum("bind",&Config->config_f); count++)
1162         {
1163                 Config->ConfValue("bind","port",count,configToken,&Config->config_f);
1164                 Config->ConfValue("bind","address",count,Addr,&Config->config_f);
1165                 Config->ConfValue("bind","type",count,Type,&Config->config_f);
1166                 if ((!*Type) || (!strcmp(Type,"clients")))
1167                 {
1168                         // modules handle server bind types now,
1169                         // its not a typo in the strcmp.
1170                         Config->ports[clientportcount] = atoi(configToken);
1171                         strlcpy(Config->addrs[clientportcount],Addr,256);
1172                         clientportcount++;
1173                         log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
1174                 }
1175         }
1176         int PortCount = clientportcount;
1177
1178         for (int count = 0; count < PortCount; count++)
1179         {
1180                 if ((openSockfd[BoundPortCount] = OpenTCPSocket()) == ERROR)
1181                 {
1182                         log(DEBUG,"InspIRCd: startup: bad fd %lu",(unsigned long)openSockfd[BoundPortCount]);
1183                         return(ERROR);
1184                 }
1185                 if (BindSocket(openSockfd[BoundPortCount],client,server,Config->ports[count],Config->addrs[count]) == ERROR)
1186                 {
1187                         log(DEFAULT,"InspIRCd: startup: failed to bind port %lu",(unsigned long)Config->ports[count]);
1188                 }
1189                 else    /* well we at least bound to one socket so we'll continue */
1190                 {
1191                         BoundPortCount++;
1192                 }
1193         }
1194
1195         /* if we didn't bind to anything then abort */
1196         if (!BoundPortCount)
1197         {
1198                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
1199                 printf("\nERROR: Was not able to bind any of %lu ports! Please check your configuration.\n\n", (unsigned long)PortCount);
1200                 return (ERROR);
1201         }
1202
1203         return BoundPortCount;
1204 }
1205