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