src/inspircd_io.cpp

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