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         *TempDir = *ServerName = *Network = *ServerDesc = *AdminName = '\0';
  48         *HideWhoisServer = *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         /** Yes yes, i know, this function is craq worthy of
 152          * sirv. Its a mess, and some day i will tidy it.
 153          * ...But that day will not be today. or probaby not
 154          * tomorrow even, because it works fine.
 155          */
 156         char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF],MW[MAXBUF],MCON[MAXBUF],MT[MAXBUF];
 157         char AH[MAXBUF],AP[MAXBUF],AF[MAXBUF],DNT[MAXBUF],pfreq[MAXBUF],thold[MAXBUF],sqmax[MAXBUF],rqmax[MAXBUF],SLIMT[MAXBUF];
 158         char localmax[MAXBUF],globalmax[MAXBUF],HS[MAXBUF];
 159         ConnectClass c;
 160         std::stringstream errstr;
 161         include_stack.clear();
 162
 163         if (!LoadConf(CONFIG_FILE,&Config->config_f,&errstr))
 164         {
 165                 errstr.seekg(0);
 166                 log(DEFAULT,"There were errors in your configuration:\n%s",errstr.str().c_str());
 167                 if (bail)
 168                 {
 169                         printf("There were errors in your configuration:\n%s",errstr.str().c_str());
 170                         Exit(0);
 171                 }
 172                 else
 173                 {
 174                         char dataline[1024];
 175                         if (user)
 176                         {
 177                                 WriteServ(user->fd,"NOTICE %s :There were errors in the configuration file:",user->nick);
 178                                 while (!errstr.eof())
 179                                 {
 180                                         errstr.getline(dataline,1024);
 181                                         WriteServ(user->fd,"NOTICE %s :%s",user->nick,dataline);
 182                                 }
 183                         }
 184                         else
 185                         {
 186                                 WriteOpers("There were errors in the configuration file:");
 187                                 while (!errstr.eof())
 188                                 {
 189                                         errstr.getline(dataline,1024);
 190                                         WriteOpers(dataline);
 191                                 }
 192                         }
 193                         return;
 194                 }
 195         }
 196
 197         /* Check we dont have more than one of singular tags
 198          */
 199         if (!CheckOnce("server",bail,user) || !CheckOnce("admin",bail,user) || !CheckOnce("files",bail,user)
 200                 || !CheckOnce("power",bail,user) || !CheckOnce("options",bail,user)
 201                 || !CheckOnce("dns",bail,user) || !CheckOnce("pid",bail,user))
 202         {
 203                 return;
 204         }
 205
 206         ConfValue("server","name",0,Config->ServerName,&Config->config_f);
 207         ConfValue("server","description",0,Config->ServerDesc,&Config->config_f);
 208         ConfValue("server","network",0,Config->Network,&Config->config_f);
 209         ConfValue("admin","name",0,Config->AdminName,&Config->config_f);
 210         ConfValue("admin","email",0,Config->AdminEmail,&Config->config_f);
 211         ConfValue("admin","nick",0,Config->AdminNick,&Config->config_f);
 212         ConfValue("files","motd",0,Config->motd,&Config->config_f);
 213         ConfValue("files","rules",0,Config->rules,&Config->config_f);
 214         ConfValue("power","diepass",0,Config->diepass,&Config->config_f);
 215         ConfValue("power","pause",0,pauseval,&Config->config_f);
 216         ConfValue("power","restartpass",0,Config->restartpass,&Config->config_f);
 217         ConfValue("options","prefixquit",0,Config->PrefixQuit,&Config->config_f);
 218         ConfValue("die","value",0,Config->DieValue,&Config->config_f);
 219         ConfValue("options","loglevel",0,dbg,&Config->config_f);
 220         ConfValue("options","netbuffersize",0,NB,&Config->config_f);
 221         ConfValue("options","maxwho",0,MW,&Config->config_f);
 222         ConfValue("options","allowhalfop",0,AH,&Config->config_f);
 223         ConfValue("options","allowprotect",0,AP,&Config->config_f);
 224         ConfValue("options","allowfounder",0,AF,&Config->config_f);
 225         ConfValue("dns","server",0,Config->DNSServer,&Config->config_f);
 226         ConfValue("dns","timeout",0,DNT,&Config->config_f);
 227         ConfValue("options","moduledir",0,Config->ModPath,&Config->config_f);
 228         ConfValue("disabled","commands",0,Config->DisabledCommands,&Config->config_f);
 229         ConfValue("options","somaxconn",0,MCON,&Config->config_f);
 230         ConfValue("options","softlimit",0,SLIMT,&Config->config_f);
 231         ConfValue("options","operonlystats",0,Config->OperOnlyStats,&Config->config_f);
 232         ConfValue("options","customversion",0,Config->CustomVersion,&Config->config_f);
 233         ConfValue("options","maxtargets",0,MT,&Config->config_f);
 234         ConfValue("options","hidesplits",0,HS,&Config->config_f);
 235         ConfValue("options","hidewhois",0,Config->HideWhoisServer,&Config->config_f);
 236         ConfValue("options","tempdir",0,Config->TempDir,&Config->config_f);
 237
 238         if (!*Config->TempDir)
 239                 strlcpy(Config->TempDir,"/tmp",1024);
 240         Config->HideSplits = ((*HS == 'y') || (*HS == 'Y') || (*HS == '1') || (*HS == 't') || (*HS == 'T'));
 241         Config->SoftLimit = atoi(SLIMT);
 242         if (*MT)
 243                 Config->MaxTargets = atoi(MT);
 244         if ((Config->MaxTargets < 0) || (Config->MaxTargets > 31))
 245         {
 246                 log(DEFAULT,"WARNING: <options:maxtargets> value is greater than 31 or less than 0, set to 20.");
 247                 Config->MaxTargets = 20;
 248         }
 249         if ((Config->SoftLimit < 1) || (Config->SoftLimit > MAXCLIENTS))
 250         {
 251                 log(DEFAULT,"WARNING: <options:softlimit> value is greater than %d or less than 0, set to %d.",MAXCLIENTS,MAXCLIENTS);
 252                 Config->SoftLimit = MAXCLIENTS;
 253         }
 254         Config->MaxConn = atoi(MCON);
 255         if (Config->MaxConn > SOMAXCONN)
 256                 log(DEFAULT,"WARNING: <options:somaxconn> value may be higher than the system-defined SOMAXCONN value!");
 257         Config->NetBufferSize = atoi(NB);
 258         Config->MaxWhoResults = atoi(MW);
 259         Config->dns_timeout = atoi(DNT);
 260         if (!strchr(Config->ServerName,'.'))
 261         {
 262                 log(DEFAULT,"WARNING: <server:name> '%s' is not a fully-qualified domain name. Changed to '%s\.'",Config->ServerName,Config->ServerName);
 263                 strlcat(Config->ServerName,".",MAXBUF);
 264         }
 265         if (!Config->dns_timeout)
 266                 Config->dns_timeout = 5;
 267         if (!Config->MaxConn)
 268                 Config->MaxConn = SOMAXCONN;
 269         if (!*Config->DNSServer)
 270         {
 271                 // attempt to look up their nameserver from /etc/resolv.conf
 272                 log(DEFAULT,"WARNING: <dns:server> not defined, attempting to find working server in /etc/resolv.conf...");
 273                 ifstream resolv("/etc/resolv.conf");
 274                 std::string nameserver;
 275                 bool found_server = false;
 276                 if (resolv.is_open())
 277                 {
 278                         while (resolv >> nameserver)
 279                         {
 280                                 if ((nameserver == "nameserver") && (!found_server))
 281                                 {
 282                                         resolv >> nameserver;
 283                                         strlcpy(Config->DNSServer,nameserver.c_str(),MAXBUF);
 284                                         found_server = true;
 285                                         log(DEFAULT,"<dns:server> set to '%s' as first resolver in /etc/resolv.conf.",nameserver.c_str());
 286                                 }
 287                         }
 288                         if (!found_server)
 289                         {
 290                                 log(DEFAULT,"/etc/resolv.conf contains no viable nameserver entries! Defaulting to nameserver '127.0.0.1'!");
 291                                 strlcpy(Config->DNSServer,"127.0.0.1",MAXBUF);
 292                         }
 293                 }
 294                 else
 295                 {
 296                         log(DEFAULT,"/etc/resolv.conf can't be opened! Defaulting to nameserver '127.0.0.1'!");
 297                         strlcpy(Config->DNSServer,"127.0.0.1",MAXBUF);
 298                 }
 299         }
 300         if (!*Config->ModPath)
 301                 strlcpy(Config->ModPath,MOD_PATH,MAXBUF);
 302         Config->AllowHalfop = ((!strcasecmp(AH,"true")) || (!strcasecmp(AH,"1")) || (!strcasecmp(AH,"yes")));
 303         if ((!Config->NetBufferSize) || (Config->NetBufferSize > 65535) || (Config->NetBufferSize < 1024))
 304         {
 305                 log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
 306                 Config->NetBufferSize = 10240;
 307         }
 308         if ((!Config->MaxWhoResults) || (Config->MaxWhoResults > 65535) || (Config->MaxWhoResults < 1))
 309         {
 310                 log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128.");
 311                 Config->MaxWhoResults = 128;
 312         }
 313         Config->LogLevel = DEFAULT;
 314         if (!strcmp(dbg,"debug"))
 315         {
 316                 Config->LogLevel = DEBUG;
 317                 Config->debugging = 1;
 318         }
 319         if (!strcmp(dbg,"verbose"))
 320                 Config->LogLevel = VERBOSE;
 321         if (!strcmp(dbg,"default"))
 322                 Config->LogLevel = DEFAULT;
 323         if (!strcmp(dbg,"sparse"))
 324                 Config->LogLevel = SPARSE;
 325         if (!strcmp(dbg,"none"))
 326                 Config->LogLevel = NONE;
 327
 328         readfile(Config->MOTD,Config->motd);
 329         log(DEFAULT,"Reading message of the day...");
 330         readfile(Config->RULES,Config->rules);
 331         log(DEFAULT,"Reading connect classes...");
 332         Classes.clear();
 333         for (int i = 0; i < ConfValueEnum("connect",&Config->config_f); i++)
 334         {
 335                 *Value = 0;
 336                 ConfValue("connect","allow",i,Value,&Config->config_f);
 337                 ConfValue("connect","timeout",i,timeout,&Config->config_f);
 338                 ConfValue("connect","flood",i,flood,&Config->config_f);
 339                 ConfValue("connect","pingfreq",i,pfreq,&Config->config_f);
 340                 ConfValue("connect","threshold",i,thold,&Config->config_f);
 341                 ConfValue("connect","sendq",i,sqmax,&Config->config_f);
 342                 ConfValue("connect","recvq",i,rqmax,&Config->config_f);
 343                 ConfValue("connect","localmax",i,localmax,&Config->config_f);
 344                 ConfValue("connect","globalmax",i,globalmax,&Config->config_f);
 345                 if (*Value)
 346                 {
 347                         c.host = Value;
 348                         c.type = CC_ALLOW;
 349                         strlcpy(Value,"",MAXBUF);
 350                         ConfValue("connect","password",i,Value,&Config->config_f);
 351                         c.pass = Value;
 352                         c.registration_timeout = 90; // default is 2 minutes
 353                         c.pingtime = 120;
 354                         c.flood = atoi(flood);
 355                         c.threshold = 5;
 356                         c.sendqmax = 262144; // 256k
 357                         c.recvqmax = 4096;   // 4k
 358                         c.maxlocal = 3;
 359                         c.maxglobal = 3;
 360                         if (atoi(localmax)>0)
 361                         {
 362                                 c.maxlocal = atoi(localmax);
 363                         }
 364                         if (atoi(globalmax)>0)
 365                         {
 366                                 c.maxglobal = atoi(globalmax);
 367                         }
 368                         if (atoi(thold)>0)
 369                         {
 370                                 c.threshold = atoi(thold);
 371                         }
 372                         else
 373                         {
 374                                 c.threshold = 1;
 375                                 c.flood = 999;
 376                                 log(DEFAULT,"Warning: Connect allow line '%s' has no flood/threshold settings. Setting this tag to 999 lines in 1 second.",c.host.c_str());
 377                         }
 378                         if (atoi(sqmax)>0)
 379                         {
 380                                 c.sendqmax = atoi(sqmax);
 381                         }
 382                         if (atoi(rqmax)>0)
 383                         {
 384                                 c.recvqmax = atoi(rqmax);
 385                         }
 386                         if (atoi(timeout)>0)
 387                         {
 388                                 c.registration_timeout = atoi(timeout);
 389                         }
 390                         if (atoi(pfreq)>0)
 391                         {
 392                                 c.pingtime = atoi(pfreq);
 393                         }
 394                         Classes.push_back(c);
 395                 }
 396                 else
 397                 {
 398                         ConfValue("connect","deny",i,Value,&Config->config_f);
 399                         c.host = Value;
 400                         c.type = CC_DENY;
 401                         Classes.push_back(c);
 402                         log(DEBUG,"Read connect class type DENY, host=%s",c.host.c_str());
 403                 }
 404
 405         }
 406         log(DEFAULT,"Reading K lines,Q lines and Z lines from config...");
 407         read_xline_defaults();
 408         log(DEFAULT,"Applying K lines, Q lines and Z lines...");
 409         apply_lines(APPLY_ALL);
 410
 411         ConfValue("pid","file",0,Config->PID,&Config->config_f);
 412         // write once here, to try it out and make sure its ok
 413         WritePID(Config->PID);
 414
 415         log(DEFAULT,"Done reading configuration file, InspIRCd is now starting.");
 416         if (!bail)
 417         {
 418                 log(DEFAULT,"Adding and removing modules due to rehash...");
 419
 420                 std::vector<std::string> old_module_names, new_module_names, added_modules, removed_modules;
 421
 422                 // store the old module names
 423                 for (std::vector<std::string>::iterator t = module_names.begin(); t != module_names.end(); t++)
 424                 {
 425                         old_module_names.push_back(*t);
 426                 }
 427
 428                 // get the new module names
 429                 for (int count2 = 0; count2 < ConfValueEnum("module",&Config->config_f); count2++)
 430                 {
 431                         ConfValue("module","name",count2,Value,&Config->config_f);
 432                         new_module_names.push_back(Value);
 433                 }
 434
 435                 // now create a list of new modules that are due to be loaded
 436                 // and a seperate list of modules which are due to be unloaded
 437                 for (std::vector<std::string>::iterator _new = new_module_names.begin(); _new != new_module_names.end(); _new++)
 438                 {
 439                         bool added = true;
 440                         for (std::vector<std::string>::iterator old = old_module_names.begin(); old != old_module_names.end(); old++)
 441                         {
 442                                 if (*old == *_new)
 443                                         added = false;
 444                         }
 445                         if (added)
 446                                 added_modules.push_back(*_new);
 447                 }
 448                 for (std::vector<std::string>::iterator oldm = old_module_names.begin(); oldm != old_module_names.end(); oldm++)
 449                 {
 450                         bool removed = true;
 451                         for (std::vector<std::string>::iterator newm = new_module_names.begin(); newm != new_module_names.end(); newm++)
 452                         {
 453                                 if (*newm == *oldm)
 454                                         removed = false;
 455                         }
 456                         if (removed)
 457                                 removed_modules.push_back(*oldm);
 458                 }
 459                 // now we have added_modules, a vector of modules to be loaded, and removed_modules, a vector of modules
 460                 // to be removed.
 461                 int rem = 0, add = 0;
 462                 if (!removed_modules.empty())
 463                 for (std::vector<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 464                 {
 465                         if (ServerInstance->UnloadModule(removing->c_str()))
 466                         {
 467                                 WriteOpers("*** REHASH UNLOADED MODULE: %s",removing->c_str());
 468                                 if (user)
 469                                         WriteServ(user->fd,"973 %s %s :Module %s successfully unloaded.",user->nick, removing->c_str(), removing->c_str());
 470                                 rem++;
 471                         }
 472                         else
 473                         {
 474                                 if (user)
 475                                         WriteServ(user->fd,"972 %s %s :Failed to unload module %s: %s",user->nick, removing->c_str(), removing->c_str(), ServerInstance->ModuleError());
 476                         }
 477                 }
 478                 if (!added_modules.empty())
 479                 for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 480                 {
 481                         if (ServerInstance->LoadModule(adding->c_str()))
 482                         {
 483                                 WriteOpers("*** REHASH LOADED MODULE: %s",adding->c_str());
 484                                 if (user)
 485                                         WriteServ(user->fd,"975 %s %s :Module %s successfully loaded.",user->nick, adding->c_str(), adding->c_str());
 486                                 add++;
 487                         }
 488                         else
 489                         {
 490                                 if (user)
 491                                         WriteServ(user->fd,"974 %s %s :Failed to load module %s: %s",user->nick, adding->c_str(), adding->c_str(), ServerInstance->ModuleError());
 492                         }
 493                 }
 494                 log(DEFAULT,"Successfully unloaded %lu of %lu modules and loaded %lu of %lu modules.",(unsigned long)rem,(unsigned long)removed_modules.size(),
 495                                                                                                         (unsigned long)add,(unsigned long)added_modules.size());
 496         }
 497 }
 498
 499
 500 void Exit (int status)
 501 {
 502         if (Config->log_file)
 503                 fclose(Config->log_file);
 504         send_error("Server shutdown.");
 505         exit (status);
 506 }
 507
 508 void Killed(int status)
 509 {
 510         if (Config->log_file)
 511                 fclose(Config->log_file);
 512         send_error("Server terminated.");
 513         exit(status);
 514 }
 515
 516 char* CleanFilename(char* name)
 517 {
 518         char* p = name + strlen(name);
 519         while ((p != name) && (*p != '/')) p--;
 520         return (p != name ? ++p : p);
 521 }
 522
 523
 524 void Rehash(int status)
 525 {
 526         WriteOpers("Rehashing config file %s due to SIGHUP",CleanFilename(CONFIG_FILE));
 527         fclose(Config->log_file);
 528         OpenLog(NULL,0);
 529         Config->Read(false,NULL);
 530         FOREACH_MOD(I_OnRehash,OnRehash(""));
 531 }
 532
 533
 534
 535 void Start (void)
 536 {
 537         printf("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
 538         printf("(C) ChatSpike Development team.\033[0m\n\n");
 539         printf("Developers:\033[1;32m     Brain, FrostyCoolSlug\033[0m\n");
 540         printf("Documentation:\033[1;32m  FrostyCoolSlug, w00t\033[0m\n");
 541         printf("Testers:\033[1;32m        typobox43, piggles, Lord_Zathras, CC\033[0m\n");
 542         printf("Name concept:\033[1;32m   Lord_Zathras\033[0m\n\n");
 543 }
 544
 545 void WritePID(std::string filename)
 546 {
 547         ofstream outfile(filename.c_str());
 548         if (outfile.is_open())
 549         {
 550                 outfile << getpid();
 551                 outfile.close();
 552         }
 553         else
 554         {
 555                 printf("Failed to write PID-file '%s', exiting.\n",filename.c_str());
 556                 log(DEFAULT,"Failed to write PID-file '%s', exiting.",filename.c_str());
 557                 Exit(0);
 558         }
 559 }
 560
 561 void SetSignals()
 562 {
 563         signal (SIGALRM, SIG_IGN);
 564         signal (SIGHUP, Rehash);
 565         signal (SIGPIPE, SIG_IGN);
 566         signal (SIGTERM, Exit);
 567         signal (SIGSEGV, Error);
 568 }
 569
 570
 571 int DaemonSeed (void)
 572 {
 573         int childpid;
 574         if ((childpid = fork ()) < 0)
 575                 return (ERROR);
 576         else if (childpid > 0)
 577                 exit (0);
 578         setsid ();
 579         umask (007);
 580         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 581
 582         setpriority(PRIO_PROCESS,(int)getpid(),15);
 583
 584         if (Config->unlimitcore)
 585         {
 586                 rlimit rl;
 587                 if (getrlimit(RLIMIT_CORE, &rl) == -1)
 588                 {
 589                         log(DEFAULT,"Failed to getrlimit()!");
 590                         return(FALSE);
 591                 }
 592                 else
 593                 {
 594                         rl.rlim_cur = rl.rlim_max;
 595                         if (setrlimit(RLIMIT_CORE, &rl) == -1)
 596                                 log(DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 597                 }
 598         }
 599
 600         return (TRUE);
 601 }
 602
 603
 604 /* Make Sure Modules Are Avaliable!
 605  * (BugFix By Craig.. See? I do work! :p)
 606  * Modified by brain, requires const char*
 607  * to work with other API functions
 608  */
 609
 610 bool FileExists (const char* file)
 611 {
 612         FILE *input;
 613         if ((input = fopen (file, "r")) == NULL)
 614         {
 615                 return(false);
 616         }
 617         else
 618         {
 619                 fclose (input);
 620                 return(true);
 621         }
 622 }
 623
 624 /* ConfProcess does the following things to a config line in the following order:
 625  *
 626  * Processes the line for syntax errors as shown below
 627  *      (1) Line void of quotes or equals (a malformed, illegal tag format)
 628  *      (2) Odd number of quotes on the line indicating a missing quote
 629  *      (3) number of equals signs not equal to number of quotes / 2 (missing an equals sign)
 630  *      (4) Spaces between the opening bracket (<) and the keyword
 631  *      (5) Spaces between a keyword and an equals sign
 632  *      (6) Spaces between an equals sign and a quote
 633  * Removes trailing spaces
 634  * Removes leading spaces
 635  * Converts tabs to spaces
 636  * Turns multiple spaces that are outside of quotes into single spaces
 637  */
 638
 639 std::string ServerConfig::ConfProcess(char* buffer, long linenumber, std::stringstream* errorstream, bool &error, std::string filename)
 640 {
 641         long number_of_quotes = 0;
 642         long number_of_equals = 0;
 643         bool has_open_bracket = false;
 644         bool in_quotes = false;
 645         error = false;
 646         if (!buffer)
 647         {
 648                 return "";
 649         }
 650         // firstly clean up the line by stripping spaces from the start and end and converting tabs to spaces
 651         for (char* d = buffer; *d; d++)
 652                 if (*d == 9)
 653                         *d = ' ';
 654         while (*buffer == ' ') buffer++;
 655         while ((buffer[strlen(buffer)-1] == ' ') && (*buffer)) buffer[strlen(buffer)-1] = '\0';
 656
 657         // empty lines are syntactically valid, as are comments
 658         if (!(*buffer) || buffer[0] == '#')
 659                 return "";
 660
 661         for (unsigned int c = 0; c < strlen(buffer); c++)
 662         {
 663                 // convert all spaces that are OUTSIDE quotes into hardspace (0xA0) as this will make them easier to
 664                 // search and replace later :)
 665                 if ((!in_quotes) && (buffer[c] == ' '))
 666                         buffer[c] = '\xA0';
 667                 if ((buffer[c] == '<') && (!in_quotes))
 668                 {
 669                         has_open_bracket = true;
 670                         if (strlen(buffer) == 1)
 671                         {
 672                                 *errorstream << "Tag without identifier at " << filename << ":" << linenumber << endl;
 673                                 error = true;
 674                                 return "";
 675                         }
 676                         else if ((tolower(buffer[c+1]) < 'a') || (tolower(buffer[c+1]) > 'z'))
 677                         {
 678                                 *errorstream << "Invalid characters in identifier at " << filename << ":" << linenumber << endl;
 679                                 error = true;
 680                                 return "";
 681                         }
 682                 }
 683                 if (buffer[c] == '"')
 684                 {
 685                         number_of_quotes++;
 686                         in_quotes = (!in_quotes);
 687                 }
 688                 if ((buffer[c] == '=') && (!in_quotes))
 689                 {
 690                         number_of_equals++;
 691                         if (strlen(buffer) == c)
 692                         {
 693                                 *errorstream << "Variable without a value at " << filename << ":" << linenumber << endl;
 694                                 error = true;
 695                                 return "";
 696                         }
 697                         else if (buffer[c+1] != '"')
 698                         {
 699                                 *errorstream << "Variable name not followed immediately by its value at " << filename << ":" << linenumber << endl;
 700                                 error = true;
 701                                 return "";
 702                         }
 703                         else if (!c)
 704                         {
 705                                 *errorstream << "Value without a variable (line starts with '=') at " << filename << ":" << linenumber << endl;
 706                                 error = true;
 707                                 return "";
 708                         }
 709                         else if (buffer[c-1] == '\xA0')
 710                         {
 711                                 *errorstream << "Variable name not followed immediately by its value at " << filename << ":" << linenumber << endl;
 712                                 error = true;
 713                                 return "";
 714                         }
 715                 }
 716         }
 717         // no quotes, and no equals. something freaky.
 718         if ((!number_of_quotes) || (!number_of_equals) && (strlen(buffer)>2) && (buffer[0]=='<'))
 719         {
 720                 *errorstream << "Malformed tag at " << filename << ":" << linenumber << endl;
 721                 error = true;
 722                 return "";
 723         }
 724         // odd number of quotes. thats just wrong.
 725         if ((number_of_quotes % 2) != 0)
 726         {
 727                 *errorstream << "Missing \" at " << filename << ":" << linenumber << endl;
 728                 error = true;
 729                 return "";
 730         }
 731         if (number_of_equals < (number_of_quotes/2))
 732         {
 733                 *errorstream << "Missing '=' at " << filename << ":" << linenumber << endl;
 734         }
 735         if (number_of_equals > (number_of_quotes/2))
 736         {
 737                 *errorstream << "Too many '=' at " << filename << ":" << linenumber << endl;
 738         }
 739
 740         std::string parsedata = buffer;
 741         // turn multispace into single space
 742         while (parsedata.find("\xA0\xA0") != std::string::npos)
 743         {
 744                 parsedata.erase(parsedata.find("\xA0\xA0"),1);
 745         }
 746
 747         // turn our hardspace back into softspace
 748         for (unsigned int d = 0; d < parsedata.length(); d++)
 749         {
 750                 if (parsedata[d] == '\xA0')
 751                         parsedata[d] = ' ';
 752         }
 753
 754         // and we're done, the line is fine!
 755         return parsedata;
 756 }
 757
 758 int ServerConfig::fgets_safe(char* buffer, size_t maxsize, FILE* &file)
 759 {
 760         char c_read = '\0';
 761         unsigned int bufptr = 0;
 762         while ((!feof(file)) && (c_read != '\n') && (c_read != '\r') && (bufptr < maxsize))
 763         {
 764                 c_read = fgetc(file);
 765                 if ((c_read != '\n') && (c_read != '\r'))
 766                         buffer[bufptr++] = c_read;
 767         }
 768         buffer[bufptr] = '\0';
 769         return bufptr;
 770 }
 771
 772 bool ServerConfig::LoadConf(const char* filename, std::stringstream *target, std::stringstream* errorstream)
 773 {
 774         target->str("");
 775         errorstream->str("");
 776         long linenumber = 1;
 777         // first, check that the file exists before we try to do anything with it
 778         if (!FileExists(filename))
 779         {
 780                 *errorstream << "File " << filename << " not found." << endl;
 781                 return false;
 782         }
 783         // Fix the chmod of the file to restrict it to the current user and group
 784         chmod(filename,0600);
 785         for (unsigned int t = 0; t < include_stack.size(); t++)
 786         {
 787                 if (std::string(filename) == include_stack[t])
 788                 {
 789                         *errorstream << "File " << filename << " is included recursively (looped inclusion)." << endl;
 790                         return false;
 791                 }
 792         }
 793         include_stack.push_back(filename);
 794         // now open it
 795         FILE* conf = fopen(filename,"r");
 796         char buffer[MAXBUF];
 797         if (conf)
 798         {
 799                 while (!feof(conf))
 800                 {
 801                         if (fgets_safe(buffer, MAXBUF, conf))
 802                         {
 803                                 if ((!feof(conf)) && (buffer) && (strlen(buffer)))
 804                                 {
 805                                         if ((buffer[0] != '#') && (buffer[0] != '\r')  && (buffer[0] != '\n'))
 806                                         {
 807                                                 if (!strncmp(buffer,"<include file=\"",15))
 808                                                 {
 809                                                         char* buf = buffer;
 810                                                         char confpath[10240],newconf[10240];
 811                                                         // include file directive
 812                                                         buf += 15;      // advance to filename
 813                                                         for (unsigned int j = 0; j < strlen(buf); j++)
 814                                                         {
 815                                                                 if (buf[j] == '\\')
 816                                                                         buf[j] = '/';
 817                                                                 if (buf[j] == '"')
 818                                                                 {
 819                                                                         buf[j] = '\0';
 820                                                                         break;
 821                                                                 }
 822                                                         }
 823                                                         log(DEBUG,"Opening included file '%s'",buf);
 824                                                         if (*buf != '/')
 825                                                         {
 826                                                                 strlcpy(confpath,CONFIG_FILE,10240);
 827                                                                 if (strstr(confpath,"/inspircd.conf"))
 828                                                                 {
 829                                                                         // leaves us with just the path
 830                                                                         *(strstr(confpath,"/inspircd.conf")) = '\0';
 831                                                                 }
 832                                                                 snprintf(newconf,10240,"%s/%s",confpath,buf);
 833                                                         }
 834                                                         else strlcpy(newconf,buf,10240);
 835                                                         std::stringstream merge(stringstream::in | stringstream::out);
 836                                                         // recursively call LoadConf and get the new data, use the same errorstream
 837                                                         if (LoadConf(newconf, &merge, errorstream))
 838                                                         {
 839                                                                 // append to the end of the file
 840                                                                 std::string newstuff = merge.str();
 841                                                                 *target << newstuff;
 842                                                         }
 843                                                         else
 844                                                         {
 845                                                                 // the error propogates up to its parent recursively
 846                                                                 // causing the config reader to bail at the top level.
 847                                                                 fclose(conf);
 848                                                                 return false;
 849                                                         }
 850                                                 }
 851                                                 else
 852                                                 {
 853                                                         bool error = false;
 854                                                         std::string data = this->ConfProcess(buffer,linenumber++,errorstream,error,filename);
 855                                                         if (error)
 856                                                         {
 857                                                                 return false;
 858                                                         }
 859                                                         *target << data;
 860                                                 }
 861                                         }
 862                                         else linenumber++;
 863                                 }
 864                         }
 865                 }
 866                 fclose(conf);
 867         }
 868         target->seekg(0);
 869         return true;
 870 }
 871
 872 /* Counts the number of tags of a certain type within the config file, e.g. to enumerate opers */
 873
 874 int ServerConfig::EnumConf(std::stringstream *config, const char* tag)
 875 {
 876         int ptr = 0;
 877         char buffer[MAXBUF], c_tag[MAXBUF], c, lastc;
 878         int in_token, in_quotes, tptr, idx = 0;
 879
 880         const char* buf = config->str().c_str();
 881         long bptr = 0;
 882         long len = strlen(buf);
 883
 884         ptr = 0;
 885         in_token = 0;
 886         in_quotes = 0;
 887         lastc = '\0';
 888         while (bptr<len)
 889         {
 890                 lastc = c;
 891                 c = buf[bptr++];
 892                 if ((c == '#') && (lastc == '\n'))
 893                 {
 894                         while ((c != '\n') && (bptr<len))
 895                         {
 896                                 lastc = c;
 897                                 c = buf[bptr++];
 898                         }
 899                 }
 900                 if ((c == '<') && (!in_quotes))
 901                 {
 902                         tptr = 0;
 903                         in_token = 1;
 904                         do {
 905                                 c = buf[bptr++];
 906                                 if (c != ' ')
 907                                 {
 908                                         c_tag[tptr++] = c;
 909                                         c_tag[tptr] = '\0';
 910                                 }
 911                         } while (c != ' ');
 912                 }
 913                 if (c == '"')
 914                 {
 915                         in_quotes = (!in_quotes);
 916                 }
 917                 if ((c == '>') && (!in_quotes))
 918                 {
 919                         in_token = 0;
 920                         if (!strcmp(c_tag,tag))
 921                         {
 922                                 /* correct tag, but wrong index */
 923                                 idx++;
 924                         }
 925                         c_tag[0] = '\0';
 926                         buffer[0] = '\0';
 927                         ptr = 0;
 928                         tptr = 0;
 929                 }
 930                 if (c != '>')
 931                 {
 932                         if ((in_token) && (c != '\n') && (c != '\r'))
 933                         {
 934                                 buffer[ptr++] = c;
 935                                 buffer[ptr] = '\0';
 936                         }
 937                 }
 938         }
 939         return idx;
 940 }
 941
 942 /* Counts the number of values within a certain tag */
 943
 944 int ServerConfig::EnumValues(std::stringstream *config, const char* tag, int index)
 945 {
 946         int ptr = 0;
 947         char buffer[MAXBUF], c_tag[MAXBUF], c, lastc;
 948         int in_token, in_quotes, tptr, idx = 0;
 949
 950         bool correct_tag = false;
 951         int num_items = 0;
 952
 953         const char* buf = config->str().c_str();
 954         long bptr = 0;
 955         long len = strlen(buf);
 956
 957         ptr = 0;
 958         in_token = 0;
 959         in_quotes = 0;
 960         lastc = '\0';
 961         while (bptr<len)
 962         {
 963                 lastc = c;
 964                 c = buf[bptr++];
 965                 if ((c == '#') && (lastc == '\n'))
 966                 {
 967                         while ((c != '\n') && (bptr<len))
 968                         {
 969                                 lastc = c;
 970                                 c = buf[bptr++];
 971                         }
 972                 }
 973                 if ((c == '<') && (!in_quotes))
 974                 {
 975                         tptr = 0;
 976                         in_token = 1;
 977                         do {
 978                                 c = buf[bptr++];
 979                                 if (c != ' ')
 980                                 {
 981                                         c_tag[tptr++] = c;
 982                                         c_tag[tptr] = '\0';
 983
 984                                         if ((!strcmp(c_tag,tag)) && (idx == index))
 985                                         {
 986                                                 correct_tag = true;
 987                                         }
 988                                 }
 989                         } while (c != ' ');
 990                 }
 991                 if (c == '"')
 992                 {
 993                         in_quotes = (!in_quotes);
 994                 }
 995
 996                 if ( (correct_tag) && (!in_quotes) && ( (c == ' ') || (c == '\n') || (c == '\r') ) )
 997                 {
 998                         num_items++;
 999                 }
1000                 if ((c == '>') && (!in_quotes))
1001                 {
1002                         in_token = 0;
1003                         if (correct_tag)
1004                                 correct_tag = false;
1005                         if (!strcmp(c_tag,tag))
1006                         {
1007                                 /* correct tag, but wrong index */
1008                                 idx++;
1009                         }
1010                         c_tag[0] = '\0';
1011                         buffer[0] = '\0';
1012                         ptr = 0;
1013                         tptr = 0;
1014                 }
1015                 if (c != '>')
1016                 {
1017                         if ((in_token) && (c != '\n') && (c != '\r'))
1018                         {
1019                                 buffer[ptr++] = c;
1020                                 buffer[ptr] = '\0';
1021                         }
1022                 }
1023         }
1024         return num_items+1;
1025 }
1026
1027
1028
1029 int ServerConfig::ConfValueEnum(char* tag, std::stringstream* config)
1030 {
1031         return EnumConf(config,tag);
1032 }
1033
1034
1035
1036 /* Retrieves a value from the config file. If there is more than one value of the specified
1037  * key and section (e.g. for opers etc) then the index value specifies which to retreive, e.g.
1038  *
1039  * ConfValue("oper","name",2,result);
1040  */
1041
1042 int ServerConfig::ReadConf(std::stringstream *config, const char* tag, const char* var, int index, char *result)
1043 {
1044         int ptr = 0;
1045         char buffer[65535], c_tag[MAXBUF], c, lastc;
1046         int in_token, in_quotes, tptr, idx = 0;
1047         char* key;
1048
1049         const char* buf = config->str().c_str();
1050         long bptr = 0;
1051         long len = config->str().length();
1052
1053         ptr = 0;
1054         in_token = 0;
1055         in_quotes = 0;
1056         lastc = '\0';
1057         c_tag[0] = '\0';
1058         buffer[0] = '\0';
1059         while (bptr<len)
1060         {
1061                 lastc = c;
1062                 c = buf[bptr++];
1063                 // FIX: Treat tabs as spaces
1064                 if (c == 9)
1065                         c = 32;
1066                 if ((c == '<') && (!in_quotes))
1067                 {
1068                         tptr = 0;
1069                         in_token = 1;
1070                         do {
1071                                 c = buf[bptr++];
1072                                 if (c != ' ')
1073                                 {
1074                                         c_tag[tptr++] = c;
1075                                         c_tag[tptr] = '\0';
1076                                 }
1077                         // FIX: Tab can follow a tagname as well as space.
1078                         } while ((c != ' ') && (c != 9));
1079                 }
1080                 if (c == '"')
1081                 {
1082                         in_quotes = (!in_quotes);
1083                 }
1084                 if ((c == '>') && (!in_quotes))
1085                 {
1086                         in_token = 0;
1087                         if (idx == index)
1088                         {
1089                                 if (!strcmp(c_tag,tag))
1090                                 {
1091                                         if ((buffer) && (c_tag) && (var))
1092                                         {
1093                                                 key = strstr(buffer,var);
1094                                                 if (!key)
1095                                                 {
1096                                                         /* value not found in tag */
1097                                                         *result = 0;
1098                                                         return 0;
1099                                                 }
1100                                                 else
1101                                                 {
1102                                                         key+=strlen(var);
1103                                                         while (*key !='"')
1104                                                         {
1105                                                                 if (!*key)
1106                                                                 {
1107                                                                         /* missing quote */
1108                                                                         *result = 0;
1109                                                                         return 0;
1110                                                                 }
1111                                                                 key++;
1112                                                         }
1113                                                         key++;
1114                                                         for (unsigned j = 0; j < strlen(key); j++)
1115                                                         {
1116                                                                 if (key[j] == '"')
1117                                                                 {
1118                                                                         key[j] = '\0';
1119                                                                 }
1120                                                         }
1121                                                         strlcpy(result,key,MAXBUF);
1122                                                         return 1;
1123                                                 }
1124                                         }
1125                                 }
1126                         }
1127                         if (!strcmp(c_tag,tag))
1128                         {
1129                                 /* correct tag, but wrong index */
1130                                 idx++;
1131                         }
1132                         c_tag[0] = '\0';
1133                         buffer[0] = '\0';
1134                         ptr = 0;
1135                         tptr = 0;
1136                 }
1137                 if (c != '>')
1138                 {
1139                         if ((in_token) && (c != '\n') && (c != '\r'))
1140                         {
1141                                 buffer[ptr++] = c;
1142                                 buffer[ptr] = '\0';
1143                         }
1144                 }
1145         }
1146         *result = 0; // value or its tag not found at all
1147         return 0;
1148 }
1149
1150
1151
1152 int ServerConfig::ConfValue(char* tag, char* var, int index, char *result,std::stringstream *config)
1153 {
1154         ReadConf(config, tag, var, index, result);
1155         return 0;
1156 }
1157
1158
1159
1160 // This will bind a socket to a port. It works for UDP/TCP
1161 int BindSocket (int sockfd, struct sockaddr_in client, struct sockaddr_in server, int port, char* addr)
1162 {
1163         memset((char *)&server,0,sizeof(server));
1164         struct in_addr addy;
1165         inet_aton(addr,&addy);
1166         server.sin_family = AF_INET;
1167         if (!strcmp(addr,""))
1168         {
1169                 server.sin_addr.s_addr = htonl(INADDR_ANY);
1170         }
1171         else
1172         {
1173                 server.sin_addr = addy;
1174         }
1175         server.sin_port = htons(port);
1176         if (bind(sockfd,(struct sockaddr*)&server,sizeof(server))<0)
1177         {
1178                 return(ERROR);
1179         }
1180         else
1181         {
1182                 listen(sockfd, Config->MaxConn);
1183                 return(TRUE);
1184         }
1185 }
1186
1187
1188 // Open a TCP Socket
1189 int OpenTCPSocket (void)
1190 {
1191         int sockfd;
1192         int on = 1;
1193         struct linger linger = { 0 };
1194
1195         if ((sockfd = socket (AF_INET, SOCK_STREAM, 0)) < 0)
1196                 return (ERROR);
1197         else
1198         {
1199                 setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (const char*)&on, sizeof(on));
1200                 /* This is BSD compatible, setting l_onoff to 0 is *NOT* http://web.irc.org/mla/ircd-dev/msg02259.html */
1201                 linger.l_onoff = 1;
1202                 linger.l_linger = 1;
1203                 setsockopt(sockfd, SOL_SOCKET, SO_LINGER, (const char*)&linger,sizeof(linger));
1204                 return (sockfd);
1205         }
1206 }
1207
1208 int BindPorts()
1209 {
1210         char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
1211         sockaddr_in client,server;
1212         int clientportcount = 0;
1213         int BoundPortCount = 0;
1214         for (int count = 0; count < Config->ConfValueEnum("bind",&Config->config_f); count++)
1215         {
1216                 Config->ConfValue("bind","port",count,configToken,&Config->config_f);
1217                 Config->ConfValue("bind","address",count,Addr,&Config->config_f);
1218                 Config->ConfValue("bind","type",count,Type,&Config->config_f);
1219                 if ((!*Type) || (!strcmp(Type,"clients")))
1220                 {
1221                         // modules handle server bind types now,
1222                         // its not a typo in the strcmp.
1223                         Config->ports[clientportcount] = atoi(configToken);
1224                         strlcpy(Config->addrs[clientportcount],Addr,256);
1225                         clientportcount++;
1226                         log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
1227                 }
1228         }
1229         int PortCount = clientportcount;
1230
1231         for (int count = 0; count < PortCount; count++)
1232         {
1233                 if ((openSockfd[BoundPortCount] = OpenTCPSocket()) == ERROR)
1234                 {
1235                         log(DEBUG,"InspIRCd: startup: bad fd %lu",(unsigned long)openSockfd[BoundPortCount]);
1236                         return(ERROR);
1237                 }
1238                 if (BindSocket(openSockfd[BoundPortCount],client,server,Config->ports[count],Config->addrs[count]) == ERROR)
1239                 {
1240                         log(DEFAULT,"InspIRCd: startup: failed to bind port %lu",(unsigned long)Config->ports[count]);
1241                 }
1242                 else    /* well we at least bound to one socket so we'll continue */
1243                 {
1244                         BoundPortCount++;
1245                 }
1246         }
1247
1248         /* if we didn't bind to anything then abort */
1249         if (!BoundPortCount)
1250         {
1251                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
1252                 printf("\nERROR: Was not able to bind any of %lu ports! Please check your configuration.\n\n", (unsigned long)PortCount);
1253                 return (ERROR);
1254         }
1255
1256         return BoundPortCount;
1257 }
1258