src/inspircd_io.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  Inspire is copyright (C) 2002-2004 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 "xline.h"
  33
  34 extern ServerConfig *Config;
  35 extern InspIRCd* ServerInstance;
  36 extern int openSockfd[MAXSOCKS];
  37 extern time_t TIME;
  38
  39
  40 ServerConfig::ServerConfig()
  41 {
  42         this->ClearStack();
  43         *ServerName = *Network = *ServerDesc = *AdminName = '\0';
  44         *AdminEmail = *AdminNick = *diepass = *restartpass = '\0';
  45         *motd = *rules = *PrefixQuit = *DieValue = *DNSServer = '\0';
  46         *ModPath = *MyExecutable = *DisabledCommands = *PID = '\0';
  47         log_file = NULL;
  48         nofork = false;
  49         unlimitcore = false;
  50         AllowHalfop = true;
  51         dns_timeout = 5;
  52         NetBufferSize = 10240;
  53         SoftLimit = MAXCLIENTS;
  54         MaxConn = SOMAXCONN;
  55         MaxWhoResults = 100;
  56         debugging = 0;
  57         LogLevel = DEFAULT;
  58         DieDelay = 5;
  59 }
  60
  61 void ServerConfig::ClearStack()
  62 {
  63         include_stack.clear();
  64 }
  65
  66
  67 void ServerConfig::Read(bool bail, userrec* user)
  68 {
  69         char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF],MW[MAXBUF],MCON[MAXBUF];
  70         char AH[MAXBUF],AP[MAXBUF],AF[MAXBUF],DNT[MAXBUF],pfreq[MAXBUF],thold[MAXBUF],sqmax[MAXBUF],rqmax[MAXBUF],SLIMT[MAXBUF];
  71         ConnectClass c;
  72         std::stringstream errstr;
  73         include_stack.clear();
  74
  75         if (!LoadConf(CONFIG_FILE,&Config->config_f,&errstr))
  76         {
  77                 errstr.seekg(0);
  78                 log(DEFAULT,"There were errors in your configuration:\n%s",errstr.str().c_str());
  79                 if (bail)
  80                 {
  81                         printf("There were errors in your configuration:\n%s",errstr.str().c_str());
  82                         Exit(0);
  83                 }
  84                 else
  85                 {
  86                         char dataline[1024];
  87                         if (user)
  88                         {
  89                                 WriteServ(user->fd,"NOTICE %s :There were errors in the configuration file:",user->nick);
  90                                 while (!errstr.eof())
  91                                 {
  92                                         errstr.getline(dataline,1024);
  93                                         WriteServ(user->fd,"NOTICE %s :%s",user->nick,dataline);
  94                                 }
  95                         }
  96                         else
  97                         {
  98                                 WriteOpers("There were errors in the configuration file:");
  99                                 while (!errstr.eof())
 100                                 {
 101                                         errstr.getline(dataline,1024);
 102                                         WriteOpers(dataline);
 103                                 }
 104                         }
 105                         return;
 106                 }
 107         }
 108
 109         ConfValue("server","name",0,Config->ServerName,&Config->config_f);
 110         ConfValue("server","description",0,Config->ServerDesc,&Config->config_f);
 111         ConfValue("server","network",0,Config->Network,&Config->config_f);
 112         ConfValue("admin","name",0,Config->AdminName,&Config->config_f);
 113         ConfValue("admin","email",0,Config->AdminEmail,&Config->config_f);
 114         ConfValue("admin","nick",0,Config->AdminNick,&Config->config_f);
 115         ConfValue("files","motd",0,Config->motd,&Config->config_f);
 116         ConfValue("files","rules",0,Config->rules,&Config->config_f);
 117         ConfValue("power","diepass",0,Config->diepass,&Config->config_f);
 118         ConfValue("power","pause",0,pauseval,&Config->config_f);
 119         ConfValue("power","restartpass",0,Config->restartpass,&Config->config_f);
 120         ConfValue("options","prefixquit",0,Config->PrefixQuit,&Config->config_f);
 121         ConfValue("die","value",0,Config->DieValue,&Config->config_f);
 122         ConfValue("options","loglevel",0,dbg,&Config->config_f);
 123         ConfValue("options","netbuffersize",0,NB,&Config->config_f);
 124         ConfValue("options","maxwho",0,MW,&Config->config_f);
 125         ConfValue("options","allowhalfop",0,AH,&Config->config_f);
 126         ConfValue("options","allowprotect",0,AP,&Config->config_f);
 127         ConfValue("options","allowfounder",0,AF,&Config->config_f);
 128         ConfValue("dns","server",0,Config->DNSServer,&Config->config_f);
 129         ConfValue("dns","timeout",0,DNT,&Config->config_f);
 130         ConfValue("options","moduledir",0,Config->ModPath,&Config->config_f);
 131         ConfValue("disabled","commands",0,Config->DisabledCommands,&Config->config_f);
 132         ConfValue("options","somaxconn",0,MCON,&Config->config_f);
 133         ConfValue("options","softlimit",0,SLIMT,&Config->config_f);
 134
 135         Config->SoftLimit = atoi(SLIMT);
 136         if ((Config->SoftLimit < 1) || (Config->SoftLimit > MAXCLIENTS))
 137         {
 138                 log(DEFAULT,"WARNING: <options:softlimit> value is greater than %d or less than 0, set to %d.",MAXCLIENTS,MAXCLIENTS);
 139                 Config->SoftLimit = MAXCLIENTS;
 140         }
 141         Config->MaxConn = atoi(MCON);
 142         if (Config->MaxConn > SOMAXCONN)
 143                 log(DEFAULT,"WARNING: <options:somaxconn> value may be higher than the system-defined SOMAXCONN value!");
 144         Config->NetBufferSize = atoi(NB);
 145         Config->MaxWhoResults = atoi(MW);
 146         Config->dns_timeout = atoi(DNT);
 147         if (!Config->dns_timeout)
 148                 Config->dns_timeout = 5;
 149         if (!Config->MaxConn)
 150                 Config->MaxConn = SOMAXCONN;
 151         if (!*Config->DNSServer)
 152                 strlcpy(Config->DNSServer,"127.0.0.1",MAXBUF);
 153         if (!*Config->ModPath)
 154                 strlcpy(Config->ModPath,MOD_PATH,MAXBUF);
 155         Config->AllowHalfop = ((!strcasecmp(AH,"true")) || (!strcasecmp(AH,"1")) || (!strcasecmp(AH,"yes")));
 156         if ((!Config->NetBufferSize) || (Config->NetBufferSize > 65535) || (Config->NetBufferSize < 1024))
 157         {
 158                 log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
 159                 Config->NetBufferSize = 10240;
 160         }
 161         if ((!Config->MaxWhoResults) || (Config->MaxWhoResults > 65535) || (Config->MaxWhoResults < 1))
 162         {
 163                 log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128.");
 164                 Config->MaxWhoResults = 128;
 165         }
 166         Config->LogLevel = DEFAULT;
 167         if (!strcmp(dbg,"debug"))
 168         {
 169                 Config->LogLevel = DEBUG;
 170                 Config->debugging = 1;
 171         }
 172         if (!strcmp(dbg,"verbose"))
 173                 Config->LogLevel = VERBOSE;
 174         if (!strcmp(dbg,"default"))
 175                 Config->LogLevel = DEFAULT;
 176         if (!strcmp(dbg,"sparse"))
 177                 Config->LogLevel = SPARSE;
 178         if (!strcmp(dbg,"none"))
 179                 Config->LogLevel = NONE;
 180
 181         readfile(Config->MOTD,Config->motd);
 182         log(DEFAULT,"Reading message of the day...");
 183         readfile(Config->RULES,Config->rules);
 184         log(DEFAULT,"Reading connect classes...");
 185         Classes.clear();
 186         for (int i = 0; i < ConfValueEnum("connect",&Config->config_f); i++)
 187         {
 188                 strcpy(Value,"");
 189                 ConfValue("connect","allow",i,Value,&Config->config_f);
 190                 ConfValue("connect","timeout",i,timeout,&Config->config_f);
 191                 ConfValue("connect","flood",i,flood,&Config->config_f);
 192                 ConfValue("connect","pingfreq",i,pfreq,&Config->config_f);
 193                 ConfValue("connect","threshold",i,thold,&Config->config_f);
 194                 ConfValue("connect","sendq",i,sqmax,&Config->config_f);
 195                 ConfValue("connect","recvq",i,rqmax,&Config->config_f);
 196                 if (*Value)
 197                 {
 198                         strlcpy(c.host,Value,MAXBUF);
 199                         c.type = CC_ALLOW;
 200                         strlcpy(Value,"",MAXBUF);
 201                         ConfValue("connect","password",i,Value,&Config->config_f);
 202                         strlcpy(c.pass,Value,MAXBUF);
 203                         c.registration_timeout = 90; // default is 2 minutes
 204                         c.pingtime = 120;
 205                         c.flood = atoi(flood);
 206                         c.threshold = 5;
 207                         c.sendqmax = 262144; // 256k
 208                         c.recvqmax = 4096;   // 4k
 209                         if (atoi(thold)>0)
 210                         {
 211                                 c.threshold = atoi(thold);
 212                         }
 213                         if (atoi(sqmax)>0)
 214                         {
 215                                 c.sendqmax = atoi(sqmax);
 216                         }
 217                         if (atoi(rqmax)>0)
 218                         {
 219                                 c.recvqmax = atoi(rqmax);
 220                         }
 221                         if (atoi(timeout)>0)
 222                         {
 223                                 c.registration_timeout = atoi(timeout);
 224                         }
 225                         if (atoi(pfreq)>0)
 226                         {
 227                                 c.pingtime = atoi(pfreq);
 228                         }
 229                         Classes.push_back(c);
 230                 }
 231                 else
 232                 {
 233                         ConfValue("connect","deny",i,Value,&Config->config_f);
 234                         strlcpy(c.host,Value,MAXBUF);
 235                         c.type = CC_DENY;
 236                         Classes.push_back(c);
 237                         log(DEBUG,"Read connect class type DENY, host=%s",c.host);
 238                 }
 239
 240         }
 241         log(DEFAULT,"Reading K lines,Q lines and Z lines from config...");
 242         read_xline_defaults();
 243         log(DEFAULT,"Applying K lines, Q lines and Z lines...");
 244         apply_lines(APPLY_ALL);
 245
 246         ConfValue("pid","file",0,Config->PID,&Config->config_f);
 247         // write once here, to try it out and make sure its ok
 248         WritePID(Config->PID);
 249
 250         log(DEFAULT,"Done reading configuration file, InspIRCd is now starting.");
 251         if (!bail)
 252         {
 253                 log(DEFAULT,"Adding and removing modules due to rehash...");
 254
 255                 std::vector<std::string> old_module_names, new_module_names, added_modules, removed_modules;
 256
 257                 // store the old module names
 258                 for (std::vector<std::string>::iterator t = module_names.begin(); t != module_names.end(); t++)
 259                 {
 260                         old_module_names.push_back(*t);
 261                 }
 262
 263                 // get the new module names
 264                 for (int count2 = 0; count2 < ConfValueEnum("module",&Config->config_f); count2++)
 265                 {
 266                         ConfValue("module","name",count2,Value,&Config->config_f);
 267                         new_module_names.push_back(Value);
 268                 }
 269
 270                 // now create a list of new modules that are due to be loaded
 271                 // and a seperate list of modules which are due to be unloaded
 272                 for (std::vector<std::string>::iterator _new = new_module_names.begin(); _new != new_module_names.end(); _new++)
 273                 {
 274                         bool added = true;
 275                         for (std::vector<std::string>::iterator old = old_module_names.begin(); old != old_module_names.end(); old++)
 276                         {
 277                                 if (*old == *_new)
 278                                         added = false;
 279                         }
 280                         if (added)
 281                                 added_modules.push_back(*_new);
 282                 }
 283                 for (std::vector<std::string>::iterator oldm = old_module_names.begin(); oldm != old_module_names.end(); oldm++)
 284                 {
 285                         bool removed = true;
 286                         for (std::vector<std::string>::iterator newm = new_module_names.begin(); newm != new_module_names.end(); newm++)
 287                         {
 288                                 if (*newm == *oldm)
 289                                         removed = false;
 290                         }
 291                         if (removed)
 292                                 removed_modules.push_back(*oldm);
 293                 }
 294                 // now we have added_modules, a vector of modules to be loaded, and removed_modules, a vector of modules
 295                 // to be removed.
 296                 int rem = 0, add = 0;
 297                 if (!removed_modules.empty())
 298                 for (std::vector<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 299                 {
 300                         if (ServerInstance->UnloadModule(removing->c_str()))
 301                         {
 302                                 WriteOpers("*** REHASH UNLOADED MODULE: %s",removing->c_str());
 303                                 WriteServ(user->fd,"973 %s %s :Module %s successfully unloaded.",user->nick, removing->c_str(), removing->c_str());
 304                                 rem++;
 305                         }
 306                         else
 307                         {
 308                                 WriteServ(user->fd,"972 %s %s :Failed to unload module %s: %s",user->nick, removing->c_str(), removing->c_str(), ServerInstance->ModuleError());
 309                         }
 310                 }
 311                 if (!added_modules.empty())
 312                 for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 313                 {
 314                         if (ServerInstance->LoadModule(adding->c_str()))
 315                         {
 316                                 WriteOpers("*** REHASH LOADED MODULE: %s",adding->c_str());
 317                                 WriteServ(user->fd,"975 %s %s :Module %s successfully loaded.",user->nick, adding->c_str(), adding->c_str());
 318                                 add++;
 319                         }
 320                         else
 321                         {
 322                                 WriteServ(user->fd,"974 %s %s :Failed to load module %s: %s",user->nick, adding->c_str(), adding->c_str(), ServerInstance->ModuleError());
 323                         }
 324                 }
 325                 log(DEFAULT,"Successfully unloaded %lu of %lu modules and loaded %lu of %lu modules.",(unsigned long)rem,(unsigned long)removed_modules.size(),
 326                                                                                                         (unsigned long)add,(unsigned long)added_modules.size());
 327         }
 328 }
 329
 330
 331 void Exit (int status)
 332 {
 333         if (Config->log_file)
 334                 fclose(Config->log_file);
 335         send_error("Server shutdown.");
 336         exit (status);
 337 }
 338
 339 void Killed(int status)
 340 {
 341         if (Config->log_file)
 342                 fclose(Config->log_file);
 343         send_error("Server terminated.");
 344         exit(status);
 345 }
 346
 347 void Rehash(int status)
 348 {
 349         WriteOpers("Rehashing config file %s due to SIGHUP",CONFIG_FILE);
 350         Config->Read(false,NULL);
 351 }
 352
 353
 354
 355 void Start (void)
 356 {
 357         printf("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
 358         printf("(C) ChatSpike Development team.\033[0m\n\n");
 359         printf("Developers:\033[1;32m     Brain, FrostyCoolSlug\033[0m\n");
 360         printf("Documentation:\033[1;32m  FrostyCoolSlug, w00t\033[0m\n");
 361         printf("Testers:\033[1;32m        typobox43, piggles, Lord_Zathras, CC\033[0m\n");
 362         printf("Name concept:\033[1;32m   Lord_Zathras\033[0m\n\n");
 363 }
 364
 365 void WritePID(std::string filename)
 366 {
 367         ofstream outfile(filename.c_str());
 368         if (outfile.is_open())
 369         {
 370                 outfile << getpid();
 371                 outfile.close();
 372         }
 373         else
 374         {
 375                 printf("Failed to write PID-file '%s', exiting.\n",filename.c_str());
 376                 log(DEFAULT,"Failed to write PID-file '%s', exiting.",filename.c_str());
 377                 Exit(0);
 378         }
 379 }
 380
 381
 382 int DaemonSeed (void)
 383 {
 384         int childpid;
 385         signal (SIGALRM, SIG_IGN);
 386         signal (SIGHUP, Rehash);
 387         signal (SIGPIPE, SIG_IGN);
 388         signal (SIGTERM, Exit);
 389         signal (SIGSEGV, Error);
 390         if ((childpid = fork ()) < 0)
 391                 return (ERROR);
 392         else if (childpid > 0)
 393                 exit (0);
 394         setsid ();
 395         umask (007);
 396         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 397
 398         setpriority(PRIO_PROCESS,(int)getpid(),15);
 399
 400         if (Config->unlimitcore)
 401         {
 402                 rlimit rl;
 403                 if (getrlimit(RLIMIT_CORE, &rl) == -1)
 404                 {
 405                         log(DEFAULT,"Failed to getrlimit()!");
 406                         return(FALSE);
 407                 }
 408                 else
 409                 {
 410                         rl.rlim_cur = rl.rlim_max;
 411                         if (setrlimit(RLIMIT_CORE, &rl) == -1)
 412                                 log(DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 413                 }
 414         }
 415
 416         return (TRUE);
 417 }
 418
 419
 420 /* Make Sure Modules Are Avaliable!
 421  * (BugFix By Craig.. See? I do work! :p)
 422  * Modified by brain, requires const char*
 423  * to work with other API functions
 424  */
 425
 426 bool FileExists (const char* file)
 427 {
 428         FILE *input;
 429         if ((input = fopen (file, "r")) == NULL)
 430         {
 431                 return(false);
 432         }
 433         else
 434         {
 435                 fclose (input);
 436                 return(true);
 437         }
 438 }
 439
 440 /* ConfProcess does the following things to a config line in the following order:
 441  *
 442  * Processes the line for syntax errors as shown below
 443  *      (1) Line void of quotes or equals (a malformed, illegal tag format)
 444  *      (2) Odd number of quotes on the line indicating a missing quote
 445  *      (3) number of equals signs not equal to number of quotes / 2 (missing an equals sign)
 446  *      (4) Spaces between the opening bracket (<) and the keyword
 447  *      (5) Spaces between a keyword and an equals sign
 448  *      (6) Spaces between an equals sign and a quote
 449  * Removes trailing spaces
 450  * Removes leading spaces
 451  * Converts tabs to spaces
 452  * Turns multiple spaces that are outside of quotes into single spaces
 453  */
 454
 455 std::string ServerConfig::ConfProcess(char* buffer, long linenumber, std::stringstream* errorstream, bool &error, std::string filename)
 456 {
 457         long number_of_quotes = 0;
 458         long number_of_equals = 0;
 459         bool has_open_bracket = false;
 460         bool in_quotes = false;
 461         error = false;
 462         if (!buffer)
 463         {
 464                 return "";
 465         }
 466         // firstly clean up the line by stripping spaces from the start and end and converting tabs to spaces
 467         for (unsigned int d = 0; d < strlen(buffer); d++)
 468                 if ((buffer[d]) == 9)
 469                         buffer[d] = ' ';
 470         while ((buffer[0] == ' ') && (strlen(buffer)>0)) buffer++;
 471         while ((buffer[strlen(buffer)-1] == ' ') && (strlen(buffer)>0)) buffer[strlen(buffer)-1] = '\0';
 472
 473         // empty lines are syntactically valid, as are comments
 474         if (!(*buffer) || buffer[0] == '#')
 475                 return "";
 476
 477         for (unsigned int c = 0; c < strlen(buffer); c++)
 478         {
 479                 // convert all spaces that are OUTSIDE quotes into hardspace (0xA0) as this will make them easier to
 480                 // search and replace later :)
 481                 if ((!in_quotes) && (buffer[c] == ' '))
 482                         buffer[c] = '\xA0';
 483                 if ((buffer[c] == '<') && (!in_quotes))
 484                 {
 485                         has_open_bracket = true;
 486                         if (strlen(buffer) == 1)
 487                         {
 488                                 *errorstream << "Tag without identifier at " << filename << ":" << linenumber << endl;
 489                                 error = true;
 490                                 return "";
 491                         }
 492                         else if ((tolower(buffer[c+1]) < 'a') || (tolower(buffer[c+1]) > 'z'))
 493                         {
 494                                 *errorstream << "Invalid characters in identifier at " << filename << ":" << linenumber << endl;
 495                                 error = true;
 496                                 return "";
 497                         }
 498                 }
 499                 if (buffer[c] == '"')
 500                 {
 501                         number_of_quotes++;
 502                         in_quotes = (!in_quotes);
 503                 }
 504                 if ((buffer[c] == '=') && (!in_quotes))
 505                 {
 506                         number_of_equals++;
 507                         if (strlen(buffer) == c)
 508                         {
 509                                 *errorstream << "Variable without a value at " << filename << ":" << linenumber << endl;
 510                                 error = true;
 511                                 return "";
 512                         }
 513                         else if (buffer[c+1] != '"')
 514                         {
 515                                 *errorstream << "Variable name not followed immediately by its value at " << filename << ":" << linenumber << endl;
 516                                 error = true;
 517                                 return "";
 518                         }
 519                         else if (!c)
 520                         {
 521                                 *errorstream << "Value without a variable (line starts with '=') at " << filename << ":" << linenumber << endl;
 522                                 error = true;
 523                                 return "";
 524                         }
 525                         else if (buffer[c-1] == '\xA0')
 526                         {
 527                                 *errorstream << "Variable name not followed immediately by its value at " << filename << ":" << linenumber << endl;
 528                                 error = true;
 529                                 return "";
 530                         }
 531                 }
 532         }
 533         // no quotes, and no equals. something freaky.
 534         if ((!number_of_quotes) || (!number_of_equals) && (strlen(buffer)>2) && (buffer[0]=='<'))
 535         {
 536                 *errorstream << "Malformed tag at " << filename << ":" << linenumber << endl;
 537                 error = true;
 538                 return "";
 539         }
 540         // odd number of quotes. thats just wrong.
 541         if ((number_of_quotes % 2) != 0)
 542         {
 543                 *errorstream << "Missing \" at " << filename << ":" << linenumber << endl;
 544                 error = true;
 545                 return "";
 546         }
 547         if (number_of_equals < (number_of_quotes/2))
 548         {
 549                 *errorstream << "Missing '=' at " << filename << ":" << linenumber << endl;
 550         }
 551         if (number_of_equals > (number_of_quotes/2))
 552         {
 553                 *errorstream << "Too many '=' at " << filename << ":" << linenumber << endl;
 554         }
 555
 556         std::string parsedata = buffer;
 557         // turn multispace into single space
 558         while (parsedata.find("\xA0\xA0") != std::string::npos)
 559         {
 560                 parsedata.erase(parsedata.find("\xA0\xA0"),1);
 561         }
 562
 563         // turn our hardspace back into softspace
 564         for (unsigned int d = 0; d < parsedata.length(); d++)
 565         {
 566                 if (parsedata[d] == '\xA0')
 567                         parsedata[d] = ' ';
 568         }
 569
 570         // and we're done, the line is fine!
 571         return parsedata;
 572 }
 573
 574 int ServerConfig::fgets_safe(char* buffer, size_t maxsize, FILE* &file)
 575 {
 576         char c_read = '\0';
 577         unsigned int bufptr = 0;
 578         while ((!feof(file)) && (c_read != '\n') && (c_read != '\r') && (bufptr < maxsize))
 579         {
 580                 c_read = fgetc(file);
 581                 if ((c_read != '\n') && (c_read != '\r'))
 582                         buffer[bufptr++] = c_read;
 583         }
 584         buffer[bufptr] = '\0';
 585         return bufptr;
 586 }
 587
 588 bool ServerConfig::LoadConf(const char* filename, std::stringstream *target, std::stringstream* errorstream)
 589 {
 590         target->str("");
 591         errorstream->str("");
 592         long linenumber = 1;
 593         // first, check that the file exists before we try to do anything with it
 594         if (!FileExists(filename))
 595         {
 596                 *errorstream << "File " << filename << " not found." << endl;
 597                 return false;
 598         }
 599         // Fix the chmod of the file to restrict it to the current user and group
 600         chmod(filename,0600);
 601         for (unsigned int t = 0; t < include_stack.size(); t++)
 602         {
 603                 if (std::string(filename) == include_stack[t])
 604                 {
 605                         *errorstream << "File " << filename << " is included recursively (looped inclusion)." << endl;
 606                         return false;
 607                 }
 608         }
 609         include_stack.push_back(filename);
 610         // now open it
 611         FILE* conf = fopen(filename,"r");
 612         char buffer[MAXBUF];
 613         if (conf)
 614         {
 615                 while (!feof(conf))
 616                 {
 617                         if (fgets_safe(buffer, MAXBUF, conf))
 618                         {
 619                                 if ((!feof(conf)) && (buffer) && (strlen(buffer)))
 620                                 {
 621                                         if ((buffer[0] != '#') && (buffer[0] != '\r')  && (buffer[0] != '\n'))
 622                                         {
 623                                                 if (!strncmp(buffer,"<include file=\"",15))
 624                                                 {
 625                                                         char* buf = buffer;
 626                                                         char confpath[10240],newconf[10240];
 627                                                         // include file directive
 628                                                         buf += 15;      // advance to filename
 629                                                         for (unsigned int j = 0; j < strlen(buf); j++)
 630                                                         {
 631                                                                 if (buf[j] == '\\')
 632                                                                         buf[j] = '/';
 633                                                                 if (buf[j] == '"')
 634                                                                 {
 635                                                                         buf[j] = '\0';
 636                                                                         break;
 637                                                                 }
 638                                                         }
 639                                                         log(DEFAULT,"Opening included file '%s'",buf);
 640                                                         if (*buf != '/')
 641                                                         {
 642                                                                 strlcpy(confpath,CONFIG_FILE,10240);
 643                                                                 if (strstr(confpath,"/inspircd.conf"))
 644                                                                 {
 645                                                                         // leaves us with just the path
 646                                                                         *(strstr(confpath,"/inspircd.conf")) = '\0';
 647                                                                 }
 648                                                                 snprintf(newconf,10240,"%s/%s",confpath,buf);
 649                                                         }
 650                                                         else snprintf(newconf,10240,"%s",buf);
 651                                                         std::stringstream merge(stringstream::in | stringstream::out);
 652                                                         // recursively call LoadConf and get the new data, use the same errorstream
 653                                                         if (LoadConf(newconf, &merge, errorstream))
 654                                                         {
 655                                                                 // append to the end of the file
 656                                                                 std::string newstuff = merge.str();
 657                                                                 *target << newstuff;
 658                                                         }
 659                                                         else
 660                                                         {
 661                                                                 // the error propogates up to its parent recursively
 662                                                                 // causing the config reader to bail at the top level.
 663                                                                 fclose(conf);
 664                                                                 return false;
 665                                                         }
 666                                                 }
 667                                                 else
 668                                                 {
 669                                                         bool error = false;
 670                                                         std::string data = this->ConfProcess(buffer,linenumber++,errorstream,error,filename);
 671                                                         if (error)
 672                                                         {
 673                                                                 return false;
 674                                                         }
 675                                                         *target << data;
 676                                                 }
 677                                         }
 678                                         else linenumber++;
 679                                 }
 680                         }
 681                 }
 682                 fclose(conf);
 683         }
 684         target->seekg(0);
 685         return true;
 686 }
 687
 688 /* Counts the number of tags of a certain type within the config file, e.g. to enumerate opers */
 689
 690 int ServerConfig::EnumConf(std::stringstream *config, const char* tag)
 691 {
 692         int ptr = 0;
 693         char buffer[MAXBUF], c_tag[MAXBUF], c, lastc;
 694         int in_token, in_quotes, tptr, idx = 0;
 695
 696         const char* buf = config->str().c_str();
 697         long bptr = 0;
 698         long len = strlen(buf);
 699
 700         ptr = 0;
 701         in_token = 0;
 702         in_quotes = 0;
 703         lastc = '\0';
 704         while (bptr<len)
 705         {
 706                 lastc = c;
 707                 c = buf[bptr++];
 708                 if ((c == '#') && (lastc == '\n'))
 709                 {
 710                         while ((c != '\n') && (bptr<len))
 711                         {
 712                                 lastc = c;
 713                                 c = buf[bptr++];
 714                         }
 715                 }
 716                 if ((c == '<') && (!in_quotes))
 717                 {
 718                         tptr = 0;
 719                         in_token = 1;
 720                         do {
 721                                 c = buf[bptr++];
 722                                 if (c != ' ')
 723                                 {
 724                                         c_tag[tptr++] = c;
 725                                         c_tag[tptr] = '\0';
 726                                 }
 727                         } while (c != ' ');
 728                 }
 729                 if (c == '"')
 730                 {
 731                         in_quotes = (!in_quotes);
 732                 }
 733                 if ((c == '>') && (!in_quotes))
 734                 {
 735                         in_token = 0;
 736                         if (!strcmp(c_tag,tag))
 737                         {
 738                                 /* correct tag, but wrong index */
 739                                 idx++;
 740                         }
 741                         c_tag[0] = '\0';
 742                         buffer[0] = '\0';
 743                         ptr = 0;
 744                         tptr = 0;
 745                 }
 746                 if (c != '>')
 747                 {
 748                         if ((in_token) && (c != '\n') && (c != '\r'))
 749                         {
 750                                 buffer[ptr++] = c;
 751                                 buffer[ptr] = '\0';
 752                         }
 753                 }
 754         }
 755         return idx;
 756 }
 757
 758 /* Counts the number of values within a certain tag */
 759
 760 int ServerConfig::EnumValues(std::stringstream *config, const char* tag, int index)
 761 {
 762         int ptr = 0;
 763         char buffer[MAXBUF], c_tag[MAXBUF], c, lastc;
 764         int in_token, in_quotes, tptr, idx = 0;
 765
 766         bool correct_tag = false;
 767         int num_items = 0;
 768
 769         const char* buf = config->str().c_str();
 770         long bptr = 0;
 771         long len = strlen(buf);
 772
 773         ptr = 0;
 774         in_token = 0;
 775         in_quotes = 0;
 776         lastc = '\0';
 777         while (bptr<len)
 778         {
 779                 lastc = c;
 780                 c = buf[bptr++];
 781                 if ((c == '#') && (lastc == '\n'))
 782                 {
 783                         while ((c != '\n') && (bptr<len))
 784                         {
 785                                 lastc = c;
 786                                 c = buf[bptr++];
 787                         }
 788                 }
 789                 if ((c == '<') && (!in_quotes))
 790                 {
 791                         tptr = 0;
 792                         in_token = 1;
 793                         do {
 794                                 c = buf[bptr++];
 795                                 if (c != ' ')
 796                                 {
 797                                         c_tag[tptr++] = c;
 798                                         c_tag[tptr] = '\0';
 799
 800                                         if ((!strcmp(c_tag,tag)) && (idx == index))
 801                                         {
 802                                                 correct_tag = true;
 803                                         }
 804                                 }
 805                         } while (c != ' ');
 806                 }
 807                 if (c == '"')
 808                 {
 809                         in_quotes = (!in_quotes);
 810                 }
 811
 812                 if ( (correct_tag) && (!in_quotes) && ( (c == ' ') || (c == '\n') || (c == '\r') ) )
 813                 {
 814                         num_items++;
 815                 }
 816                 if ((c == '>') && (!in_quotes))
 817                 {
 818                         in_token = 0;
 819                         if (correct_tag)
 820                                 correct_tag = false;
 821                         if (!strcmp(c_tag,tag))
 822                         {
 823                                 /* correct tag, but wrong index */
 824                                 idx++;
 825                         }
 826                         c_tag[0] = '\0';
 827                         buffer[0] = '\0';
 828                         ptr = 0;
 829                         tptr = 0;
 830                 }
 831                 if (c != '>')
 832                 {
 833                         if ((in_token) && (c != '\n') && (c != '\r'))
 834                         {
 835                                 buffer[ptr++] = c;
 836                                 buffer[ptr] = '\0';
 837                         }
 838                 }
 839         }
 840         return num_items+1;
 841 }
 842
 843
 844
 845 int ServerConfig::ConfValueEnum(char* tag, std::stringstream* config)
 846 {
 847         return EnumConf(config,tag);
 848 }
 849
 850
 851
 852 /* Retrieves a value from the config file. If there is more than one value of the specified
 853  * key and section (e.g. for opers etc) then the index value specifies which to retreive, e.g.
 854  *
 855  * ConfValue("oper","name",2,result);
 856  */
 857
 858 int ServerConfig::ReadConf(std::stringstream *config, const char* tag, const char* var, int index, char *result)
 859 {
 860         int ptr = 0;
 861         char buffer[65535], c_tag[MAXBUF], c, lastc;
 862         int in_token, in_quotes, tptr, idx = 0;
 863         char* key;
 864
 865         const char* buf = config->str().c_str();
 866         long bptr = 0;
 867         long len = config->str().length();
 868
 869         ptr = 0;
 870         in_token = 0;
 871         in_quotes = 0;
 872         lastc = '\0';
 873         c_tag[0] = '\0';
 874         buffer[0] = '\0';
 875         while (bptr<len)
 876         {
 877                 lastc = c;
 878                 c = buf[bptr++];
 879                 // FIX: Treat tabs as spaces
 880                 if (c == 9)
 881                         c = 32;
 882                 if ((c == '<') && (!in_quotes))
 883                 {
 884                         tptr = 0;
 885                         in_token = 1;
 886                         do {
 887                                 c = buf[bptr++];
 888                                 if (c != ' ')
 889                                 {
 890                                         c_tag[tptr++] = c;
 891                                         c_tag[tptr] = '\0';
 892                                 }
 893                         // FIX: Tab can follow a tagname as well as space.
 894                         } while ((c != ' ') && (c != 9));
 895                 }
 896                 if (c == '"')
 897                 {
 898                         in_quotes = (!in_quotes);
 899                 }
 900                 if ((c == '>') && (!in_quotes))
 901                 {
 902                         in_token = 0;
 903                         if (idx == index)
 904                         {
 905                                 if (!strcmp(c_tag,tag))
 906                                 {
 907                                         if ((buffer) && (c_tag) && (var))
 908                                         {
 909                                                 key = strstr(buffer,var);
 910                                                 if (!key)
 911                                                 {
 912                                                         /* value not found in tag */
 913                                                         strcpy(result,"");
 914                                                         return 0;
 915                                                 }
 916                                                 else
 917                                                 {
 918                                                         key+=strlen(var);
 919                                                         while (*key !='"')
 920                                                         {
 921                                                                 if (!*key)
 922                                                                 {
 923                                                                         /* missing quote */
 924                                                                         strcpy(result,"");
 925                                                                         return 0;
 926                                                                 }
 927                                                                 key++;
 928                                                         }
 929                                                         key++;
 930                                                         for (unsigned j = 0; j < strlen(key); j++)
 931                                                         {
 932                                                                 if (key[j] == '"')
 933                                                                 {
 934                                                                         key[j] = '\0';
 935                                                                 }
 936                                                         }
 937                                                         strlcpy(result,key,MAXBUF);
 938                                                         return 1;
 939                                                 }
 940                                         }
 941                                 }
 942                         }
 943                         if (!strcmp(c_tag,tag))
 944                         {
 945                                 /* correct tag, but wrong index */
 946                                 idx++;
 947                         }
 948                         c_tag[0] = '\0';
 949                         buffer[0] = '\0';
 950                         ptr = 0;
 951                         tptr = 0;
 952                 }
 953                 if (c != '>')
 954                 {
 955                         if ((in_token) && (c != '\n') && (c != '\r'))
 956                         {
 957                                 buffer[ptr++] = c;
 958                                 buffer[ptr] = '\0';
 959                         }
 960                 }
 961         }
 962         strcpy(result,""); // value or its tag not found at all
 963         return 0;
 964 }
 965
 966
 967
 968 int ServerConfig::ConfValue(char* tag, char* var, int index, char *result,std::stringstream *config)
 969 {
 970         ReadConf(config, tag, var, index, result);
 971         return 0;
 972 }
 973
 974
 975
 976 // This will bind a socket to a port. It works for UDP/TCP
 977 int BindSocket (int sockfd, struct sockaddr_in client, struct sockaddr_in server, int port, char* addr)
 978 {
 979         memset((char *)&server,0,sizeof(server));
 980         struct in_addr addy;
 981         inet_aton(addr,&addy);
 982         server.sin_family = AF_INET;
 983         if (!strcmp(addr,""))
 984         {
 985                 server.sin_addr.s_addr = htonl(INADDR_ANY);
 986         }
 987         else
 988         {
 989                 server.sin_addr = addy;
 990         }
 991         server.sin_port = htons(port);
 992         if (bind(sockfd,(struct sockaddr*)&server,sizeof(server))<0)
 993         {
 994                 return(ERROR);
 995         }
 996         else
 997         {
 998                 listen(sockfd, Config->MaxConn);
 999                 return(TRUE);
1000         }
1001 }
1002
1003
1004 // Open a TCP Socket
1005 int OpenTCPSocket (void)
1006 {
1007         int sockfd;
1008         int on = 1;
1009         struct linger linger = { 0 };
1010
1011         if ((sockfd = socket (AF_INET, SOCK_STREAM, 0)) < 0)
1012                 return (ERROR);
1013         else
1014         {
1015                 setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (const char*)&on, sizeof(on));
1016                 /* This is BSD compatible, setting l_onoff to 0 is *NOT* http://web.irc.org/mla/ircd-dev/msg02259.html */
1017                 linger.l_onoff = 1;
1018                 linger.l_linger = 1;
1019                 setsockopt(sockfd, SOL_SOCKET, SO_LINGER, (const char*)&linger,sizeof(linger));
1020                 return (sockfd);
1021         }
1022 }
1023
1024 int BindPorts()
1025 {
1026         char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
1027         sockaddr_in client,server;
1028         int clientportcount = 0;
1029         int BoundPortCount = 0;
1030         for (int count = 0; count < Config->ConfValueEnum("bind",&Config->config_f); count++)
1031         {
1032                 Config->ConfValue("bind","port",count,configToken,&Config->config_f);
1033                 Config->ConfValue("bind","address",count,Addr,&Config->config_f);
1034                 Config->ConfValue("bind","type",count,Type,&Config->config_f);
1035                 if (strcmp(Type,"servers"))
1036                 {
1037                         // modules handle server bind types now,
1038                         // its not a typo in the strcmp.
1039                         Config->ports[clientportcount] = atoi(configToken);
1040                         strlcpy(Config->addrs[clientportcount],Addr,256);
1041                         clientportcount++;
1042                         log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
1043                 }
1044         }
1045         int PortCount = clientportcount;
1046
1047         for (int count = 0; count < PortCount; count++)
1048         {
1049                 if ((openSockfd[BoundPortCount] = OpenTCPSocket()) == ERROR)
1050                 {
1051                         log(DEBUG,"InspIRCd: startup: bad fd %lu",(unsigned long)openSockfd[BoundPortCount]);
1052                         return(ERROR);
1053                 }
1054                 if (BindSocket(openSockfd[BoundPortCount],client,server,Config->ports[count],Config->addrs[count]) == ERROR)
1055                 {
1056                         log(DEFAULT,"InspIRCd: startup: failed to bind port %lu",(unsigned long)Config->ports[count]);
1057                 }
1058                 else    /* well we at least bound to one socket so we'll continue */
1059                 {
1060                         BoundPortCount++;
1061                 }
1062         }
1063
1064         /* if we didn't bind to anything then abort */
1065         if (!BoundPortCount)
1066         {
1067                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
1068                 printf("\nERROR: Was not able to bind any of %lu ports! Please check your configuration.\n\n", (unsigned long)PortCount);
1069                 return (ERROR);
1070         }
1071
1072         return BoundPortCount;
1073 }
1074