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 "inspircd_util.h"
  31 #include "inspstring.h"
  32 #include "helperfuncs.h"
  33 #include "xline.h"
  34
  35 extern ServerConfig *Config;
  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 (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(), 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 (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(), 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 WriteOpers(char* text, ...);
 332
 333 void Exit (int status)
 334 {
 335         if (Config->log_file)
 336                 fclose(Config->log_file);
 337         send_error("Server shutdown.");
 338         exit (status);
 339 }
 340
 341 void Killed(int status)
 342 {
 343         if (Config->log_file)
 344                 fclose(Config->log_file);
 345         send_error("Server terminated.");
 346         exit(status);
 347 }
 348
 349 void Rehash(int status)
 350 {
 351         WriteOpers("Rehashing config file %s due to SIGHUP",CONFIG_FILE);
 352         Config->Read(false,NULL);
 353 }
 354
 355
 356
 357 void Start (void)
 358 {
 359         printf("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
 360         printf("(C) ChatSpike Development team.\033[0m\n\n");
 361         printf("Developers:\033[1;32m     Brain, FrostyCoolSlug\033[0m\n");
 362         printf("Documentation:\033[1;32m  FrostyCoolSlug, w00t\033[0m\n");
 363         printf("Testers:\033[1;32m        typobox43, piggles, Lord_Zathras, CC\033[0m\n");
 364         printf("Name concept:\033[1;32m   Lord_Zathras\033[0m\n\n");
 365 }
 366
 367 void WritePID(std::string filename)
 368 {
 369         ofstream outfile(filename.c_str());
 370         if (outfile.is_open())
 371         {
 372                 outfile << getpid();
 373                 outfile.close();
 374         }
 375         else
 376         {
 377                 printf("Failed to write PID-file '%s', exiting.\n",filename.c_str());
 378                 log(DEFAULT,"Failed to write PID-file '%s', exiting.",filename.c_str());
 379                 Exit(0);
 380         }
 381 }
 382
 383
 384 int DaemonSeed (void)
 385 {
 386         int childpid;
 387         signal (SIGALRM, SIG_IGN);
 388         signal (SIGHUP, Rehash);
 389         signal (SIGPIPE, SIG_IGN);
 390         signal (SIGTERM, Exit);
 391         signal (SIGSEGV, Error);
 392         if ((childpid = fork ()) < 0)
 393                 return (ERROR);
 394         else if (childpid > 0)
 395                 exit (0);
 396         setsid ();
 397         umask (007);
 398         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 399
 400         setpriority(PRIO_PROCESS,(int)getpid(),15);
 401
 402         if (Config->unlimitcore)
 403         {
 404                 rlimit rl;
 405                 if (getrlimit(RLIMIT_CORE, &rl) == -1)
 406                 {
 407                         log(DEFAULT,"Failed to getrlimit()!");
 408                         return(FALSE);
 409                 }
 410                 else
 411                 {
 412                         rl.rlim_cur = rl.rlim_max;
 413                         if (setrlimit(RLIMIT_CORE, &rl) == -1)
 414                                 log(DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 415                 }
 416         }
 417
 418         return (TRUE);
 419 }
 420
 421
 422 /* Make Sure Modules Are Avaliable!
 423  * (BugFix By Craig.. See? I do work! :p)
 424  * Modified by brain, requires const char*
 425  * to work with other API functions
 426  */
 427
 428 bool FileExists (const char* file)
 429 {
 430         FILE *input;
 431         if ((input = fopen (file, "r")) == NULL)
 432         {
 433                 return(false);
 434         }
 435         else
 436         {
 437                 fclose (input);
 438                 return(true);
 439         }
 440 }
 441
 442 /* ConfProcess does the following things to a config line in the following order:
 443  *
 444  * Processes the line for syntax errors as shown below
 445  *      (1) Line void of quotes or equals (a malformed, illegal tag format)
 446  *      (2) Odd number of quotes on the line indicating a missing quote
 447  *      (3) number of equals signs not equal to number of quotes / 2 (missing an equals sign)
 448  *      (4) Spaces between the opening bracket (<) and the keyword
 449  *      (5) Spaces between a keyword and an equals sign
 450  *      (6) Spaces between an equals sign and a quote
 451  * Removes trailing spaces
 452  * Removes leading spaces
 453  * Converts tabs to spaces
 454  * Turns multiple spaces that are outside of quotes into single spaces
 455  */
 456
 457 std::string ServerConfig::ConfProcess(char* buffer, long linenumber, std::stringstream* errorstream, bool &error, std::string filename)
 458 {
 459         long number_of_quotes = 0;
 460         long number_of_equals = 0;
 461         bool has_open_bracket = false;
 462         bool in_quotes = false;
 463         error = false;
 464         if (!buffer)
 465         {
 466                 return "";
 467         }
 468         // firstly clean up the line by stripping spaces from the start and end and converting tabs to spaces
 469         for (unsigned int d = 0; d < strlen(buffer); d++)
 470                 if ((buffer[d]) == 9)
 471                         buffer[d] = ' ';
 472         while ((buffer[0] == ' ') && (strlen(buffer)>0)) buffer++;
 473         while ((buffer[strlen(buffer)-1] == ' ') && (strlen(buffer)>0)) buffer[strlen(buffer)-1] = '\0';
 474
 475         // empty lines are syntactically valid, as are comments
 476         if (!(*buffer) || buffer[0] == '#')
 477                 return "";
 478
 479         for (unsigned int c = 0; c < strlen(buffer); c++)
 480         {
 481                 // convert all spaces that are OUTSIDE quotes into hardspace (0xA0) as this will make them easier to
 482                 // search and replace later :)
 483                 if ((!in_quotes) && (buffer[c] == ' '))
 484                         buffer[c] = '\xA0';
 485                 if ((buffer[c] == '<') && (!in_quotes))
 486                 {
 487                         has_open_bracket = true;
 488                         if (strlen(buffer) == 1)
 489                         {
 490                                 *errorstream << "Tag without identifier at " << filename << ":" << linenumber << endl;
 491                                 error = true;
 492                                 return "";
 493                         }
 494                         else if ((tolower(buffer[c+1]) < 'a') || (tolower(buffer[c+1]) > 'z'))
 495                         {
 496                                 *errorstream << "Invalid characters in identifier at " << filename << ":" << linenumber << endl;
 497                                 error = true;
 498                                 return "";
 499                         }
 500                 }
 501                 if (buffer[c] == '"')
 502                 {
 503                         number_of_quotes++;
 504                         in_quotes = (!in_quotes);
 505                 }
 506                 if ((buffer[c] == '=') && (!in_quotes))
 507                 {
 508                         number_of_equals++;
 509                         if (strlen(buffer) == c)
 510                         {
 511                                 *errorstream << "Variable without a value at " << filename << ":" << linenumber << endl;
 512                                 error = true;
 513                                 return "";
 514                         }
 515                         else if (buffer[c+1] != '"')
 516                         {
 517                                 *errorstream << "Variable name not followed immediately by its value at " << filename << ":" << linenumber << endl;
 518                                 error = true;
 519                                 return "";
 520                         }
 521                         else if (!c)
 522                         {
 523                                 *errorstream << "Value without a variable (line starts with '=') at " << filename << ":" << linenumber << endl;
 524                                 error = true;
 525                                 return "";
 526                         }
 527                         else if (buffer[c-1] == '\xA0')
 528                         {
 529                                 *errorstream << "Variable name not followed immediately by its value at " << filename << ":" << linenumber << endl;
 530                                 error = true;
 531                                 return "";
 532                         }
 533                 }
 534         }
 535         // no quotes, and no equals. something freaky.
 536         if ((!number_of_quotes) || (!number_of_equals) && (strlen(buffer)>2) && (buffer[0]=='<'))
 537         {
 538                 *errorstream << "Malformed tag at " << filename << ":" << linenumber << endl;
 539                 error = true;
 540                 return "";
 541         }
 542         // odd number of quotes. thats just wrong.
 543         if ((number_of_quotes % 2) != 0)
 544         {
 545                 *errorstream << "Missing \" at " << filename << ":" << linenumber << endl;
 546                 error = true;
 547                 return "";
 548         }
 549         if (number_of_equals < (number_of_quotes/2))
 550         {
 551                 *errorstream << "Missing '=' at " << filename << ":" << linenumber << endl;
 552         }
 553         if (number_of_equals > (number_of_quotes/2))
 554         {
 555                 *errorstream << "Too many '=' at " << filename << ":" << linenumber << endl;
 556         }
 557
 558         std::string parsedata = buffer;
 559         // turn multispace into single space
 560         while (parsedata.find("\xA0\xA0") != std::string::npos)
 561         {
 562                 parsedata.erase(parsedata.find("\xA0\xA0"),1);
 563         }
 564
 565         // turn our hardspace back into softspace
 566         for (unsigned int d = 0; d < parsedata.length(); d++)
 567         {
 568                 if (parsedata[d] == '\xA0')
 569                         parsedata[d] = ' ';
 570         }
 571
 572         // and we're done, the line is fine!
 573         return parsedata;
 574 }
 575
 576 int ServerConfig::fgets_safe(char* buffer, size_t maxsize, FILE* &file)
 577 {
 578         char c_read = '\0';
 579         unsigned int bufptr = 0;
 580         while ((!feof(file)) && (c_read != '\n') && (c_read != '\r') && (bufptr < maxsize))
 581         {
 582                 c_read = fgetc(file);
 583                 if ((c_read != '\n') && (c_read != '\r'))
 584                         buffer[bufptr++] = c_read;
 585         }
 586         buffer[bufptr] = '\0';
 587         return bufptr;
 588 }
 589
 590 bool ServerConfig::LoadConf(const char* filename, std::stringstream *target, std::stringstream* errorstream)
 591 {
 592         target->str("");
 593         errorstream->str("");
 594         long linenumber = 1;
 595         // first, check that the file exists before we try to do anything with it
 596         if (!FileExists(filename))
 597         {
 598                 *errorstream << "File " << filename << " not found." << endl;
 599                 return false;
 600         }
 601         // Fix the chmod of the file to restrict it to the current user and group
 602         chmod(filename,0600);
 603         for (unsigned int t = 0; t < include_stack.size(); t++)
 604         {
 605                 if (std::string(filename) == include_stack[t])
 606                 {
 607                         *errorstream << "File " << filename << " is included recursively (looped inclusion)." << endl;
 608                         return false;
 609                 }
 610         }
 611         include_stack.push_back(filename);
 612         // now open it
 613         FILE* conf = fopen(filename,"r");
 614         char buffer[MAXBUF];
 615         if (conf)
 616         {
 617                 while (!feof(conf))
 618                 {
 619                         if (fgets_safe(buffer, MAXBUF, conf))
 620                         {
 621                                 if ((!feof(conf)) && (buffer) && (strlen(buffer)))
 622                                 {
 623                                         if ((buffer[0] != '#') && (buffer[0] != '\r')  && (buffer[0] != '\n'))
 624                                         {
 625                                                 if (!strncmp(buffer,"<include file=\"",15))
 626                                                 {
 627                                                         char* buf = buffer;
 628                                                         char confpath[10240],newconf[10240];
 629                                                         // include file directive
 630                                                         buf += 15;      // advance to filename
 631                                                         for (unsigned int j = 0; j < strlen(buf); j++)
 632                                                         {
 633                                                                 if (buf[j] == '\\')
 634                                                                         buf[j] = '/';
 635                                                                 if (buf[j] == '"')
 636                                                                 {
 637                                                                         buf[j] = '\0';
 638                                                                         break;
 639                                                                 }
 640                                                         }
 641                                                         log(DEFAULT,"Opening included file '%s'",buf);
 642                                                         if (*buf != '/')
 643                                                         {
 644                                                                 strlcpy(confpath,CONFIG_FILE,10240);
 645                                                                 if (strstr(confpath,"/inspircd.conf"))
 646                                                                 {
 647                                                                         // leaves us with just the path
 648                                                                         *(strstr(confpath,"/inspircd.conf")) = '\0';
 649                                                                 }
 650                                                                 snprintf(newconf,10240,"%s/%s",confpath,buf);
 651                                                         }
 652                                                         else snprintf(newconf,10240,"%s",buf);
 653                                                         std::stringstream merge(stringstream::in | stringstream::out);
 654                                                         // recursively call LoadConf and get the new data, use the same errorstream
 655                                                         if (LoadConf(newconf, &merge, errorstream))
 656                                                         {
 657                                                                 // append to the end of the file
 658                                                                 std::string newstuff = merge.str();
 659                                                                 *target << newstuff;
 660                                                         }
 661                                                         else
 662                                                         {
 663                                                                 // the error propogates up to its parent recursively
 664                                                                 // causing the config reader to bail at the top level.
 665                                                                 fclose(conf);
 666                                                                 return false;
 667                                                         }
 668                                                 }
 669                                                 else
 670                                                 {
 671                                                         bool error = false;
 672                                                         std::string data = this->ConfProcess(buffer,linenumber++,errorstream,error,filename);
 673                                                         if (error)
 674                                                         {
 675                                                                 return false;
 676                                                         }
 677                                                         *target << data;
 678                                                 }
 679                                         }
 680                                         else linenumber++;
 681                                 }
 682                         }
 683                 }
 684                 fclose(conf);
 685         }
 686         target->seekg(0);
 687         return true;
 688 }
 689
 690 /* Counts the number of tags of a certain type within the config file, e.g. to enumerate opers */
 691
 692 int ServerConfig::EnumConf(std::stringstream *config, const char* tag)
 693 {
 694         int ptr = 0;
 695         char buffer[MAXBUF], c_tag[MAXBUF], c, lastc;
 696         int in_token, in_quotes, tptr, idx = 0;
 697
 698         const char* buf = config->str().c_str();
 699         long bptr = 0;
 700         long len = strlen(buf);
 701
 702         ptr = 0;
 703         in_token = 0;
 704         in_quotes = 0;
 705         lastc = '\0';
 706         while (bptr<len)
 707         {
 708                 lastc = c;
 709                 c = buf[bptr++];
 710                 if ((c == '#') && (lastc == '\n'))
 711                 {
 712                         while ((c != '\n') && (bptr<len))
 713                         {
 714                                 lastc = c;
 715                                 c = buf[bptr++];
 716                         }
 717                 }
 718                 if ((c == '<') && (!in_quotes))
 719                 {
 720                         tptr = 0;
 721                         in_token = 1;
 722                         do {
 723                                 c = buf[bptr++];
 724                                 if (c != ' ')
 725                                 {
 726                                         c_tag[tptr++] = c;
 727                                         c_tag[tptr] = '\0';
 728                                 }
 729                         } while (c != ' ');
 730                 }
 731                 if (c == '"')
 732                 {
 733                         in_quotes = (!in_quotes);
 734                 }
 735                 if ((c == '>') && (!in_quotes))
 736                 {
 737                         in_token = 0;
 738                         if (!strcmp(c_tag,tag))
 739                         {
 740                                 /* correct tag, but wrong index */
 741                                 idx++;
 742                         }
 743                         c_tag[0] = '\0';
 744                         buffer[0] = '\0';
 745                         ptr = 0;
 746                         tptr = 0;
 747                 }
 748                 if (c != '>')
 749                 {
 750                         if ((in_token) && (c != '\n') && (c != '\r'))
 751                         {
 752                                 buffer[ptr++] = c;
 753                                 buffer[ptr] = '\0';
 754                         }
 755                 }
 756         }
 757         return idx;
 758 }
 759
 760 /* Counts the number of values within a certain tag */
 761
 762 int ServerConfig::EnumValues(std::stringstream *config, const char* tag, int index)
 763 {
 764         int ptr = 0;
 765         char buffer[MAXBUF], c_tag[MAXBUF], c, lastc;
 766         int in_token, in_quotes, tptr, idx = 0;
 767
 768         bool correct_tag = false;
 769         int num_items = 0;
 770
 771         const char* buf = config->str().c_str();
 772         long bptr = 0;
 773         long len = strlen(buf);
 774
 775         ptr = 0;
 776         in_token = 0;
 777         in_quotes = 0;
 778         lastc = '\0';
 779         while (bptr<len)
 780         {
 781                 lastc = c;
 782                 c = buf[bptr++];
 783                 if ((c == '#') && (lastc == '\n'))
 784                 {
 785                         while ((c != '\n') && (bptr<len))
 786                         {
 787                                 lastc = c;
 788                                 c = buf[bptr++];
 789                         }
 790                 }
 791                 if ((c == '<') && (!in_quotes))
 792                 {
 793                         tptr = 0;
 794                         in_token = 1;
 795                         do {
 796                                 c = buf[bptr++];
 797                                 if (c != ' ')
 798                                 {
 799                                         c_tag[tptr++] = c;
 800                                         c_tag[tptr] = '\0';
 801
 802                                         if ((!strcmp(c_tag,tag)) && (idx == index))
 803                                         {
 804                                                 correct_tag = true;
 805                                         }
 806                                 }
 807                         } while (c != ' ');
 808                 }
 809                 if (c == '"')
 810                 {
 811                         in_quotes = (!in_quotes);
 812                 }
 813
 814                 if ( (correct_tag) && (!in_quotes) && ( (c == ' ') || (c == '\n') || (c == '\r') ) )
 815                 {
 816                         num_items++;
 817                 }
 818                 if ((c == '>') && (!in_quotes))
 819                 {
 820                         in_token = 0;
 821                         if (correct_tag)
 822                                 correct_tag = false;
 823                         if (!strcmp(c_tag,tag))
 824                         {
 825                                 /* correct tag, but wrong index */
 826                                 idx++;
 827                         }
 828                         c_tag[0] = '\0';
 829                         buffer[0] = '\0';
 830                         ptr = 0;
 831                         tptr = 0;
 832                 }
 833                 if (c != '>')
 834                 {
 835                         if ((in_token) && (c != '\n') && (c != '\r'))
 836                         {
 837                                 buffer[ptr++] = c;
 838                                 buffer[ptr] = '\0';
 839                         }
 840                 }
 841         }
 842         return num_items+1;
 843 }
 844
 845
 846
 847 int ServerConfig::ConfValueEnum(char* tag, std::stringstream* config)
 848 {
 849         return EnumConf(config,tag);
 850 }
 851
 852
 853
 854 /* Retrieves a value from the config file. If there is more than one value of the specified
 855  * key and section (e.g. for opers etc) then the index value specifies which to retreive, e.g.
 856  *
 857  * ConfValue("oper","name",2,result);
 858  */
 859
 860 int ServerConfig::ReadConf(std::stringstream *config, const char* tag, const char* var, int index, char *result)
 861 {
 862         int ptr = 0;
 863         char buffer[65535], c_tag[MAXBUF], c, lastc;
 864         int in_token, in_quotes, tptr, idx = 0;
 865         char* key;
 866
 867         const char* buf = config->str().c_str();
 868         long bptr = 0;
 869         long len = config->str().length();
 870
 871         ptr = 0;
 872         in_token = 0;
 873         in_quotes = 0;
 874         lastc = '\0';
 875         c_tag[0] = '\0';
 876         buffer[0] = '\0';
 877         while (bptr<len)
 878         {
 879                 lastc = c;
 880                 c = buf[bptr++];
 881                 // FIX: Treat tabs as spaces
 882                 if (c == 9)
 883                         c = 32;
 884                 if ((c == '<') && (!in_quotes))
 885                 {
 886                         tptr = 0;
 887                         in_token = 1;
 888                         do {
 889                                 c = buf[bptr++];
 890                                 if (c != ' ')
 891                                 {
 892                                         c_tag[tptr++] = c;
 893                                         c_tag[tptr] = '\0';
 894                                 }
 895                         // FIX: Tab can follow a tagname as well as space.
 896                         } while ((c != ' ') && (c != 9));
 897                 }
 898                 if (c == '"')
 899                 {
 900                         in_quotes = (!in_quotes);
 901                 }
 902                 if ((c == '>') && (!in_quotes))
 903                 {
 904                         in_token = 0;
 905                         if (idx == index)
 906                         {
 907                                 if (!strcmp(c_tag,tag))
 908                                 {
 909                                         if ((buffer) && (c_tag) && (var))
 910                                         {
 911                                                 key = strstr(buffer,var);
 912                                                 if (!key)
 913                                                 {
 914                                                         /* value not found in tag */
 915                                                         strcpy(result,"");
 916                                                         return 0;
 917                                                 }
 918                                                 else
 919                                                 {
 920                                                         key+=strlen(var);
 921                                                         while (key[0] !='"')
 922                                                         {
 923                                                                 if (!strlen(key))
 924                                                                 {
 925                                                                         /* missing quote */
 926                                                                         strcpy(result,"");
 927                                                                         return 0;
 928                                                                 }
 929                                                                 key++;
 930                                                         }
 931                                                         key++;
 932                                                         for (unsigned j = 0; j < strlen(key); j++)
 933                                                         {
 934                                                                 if (key[j] == '"')
 935                                                                 {
 936                                                                         key[j] = '\0';
 937                                                                 }
 938                                                         }
 939                                                         strlcpy(result,key,MAXBUF);
 940                                                         return 1;
 941                                                 }
 942                                         }
 943                                 }
 944                         }
 945                         if (!strcmp(c_tag,tag))
 946                         {
 947                                 /* correct tag, but wrong index */
 948                                 idx++;
 949                         }
 950                         c_tag[0] = '\0';
 951                         buffer[0] = '\0';
 952                         ptr = 0;
 953                         tptr = 0;
 954                 }
 955                 if (c != '>')
 956                 {
 957                         if ((in_token) && (c != '\n') && (c != '\r'))
 958                         {
 959                                 buffer[ptr++] = c;
 960                                 buffer[ptr] = '\0';
 961                         }
 962                 }
 963         }
 964         strcpy(result,""); // value or its tag not found at all
 965         return 0;
 966 }
 967
 968
 969
 970 int ServerConfig::ConfValue(char* tag, char* var, int index, char *result,std::stringstream *config)
 971 {
 972         ReadConf(config, tag, var, index, result);
 973         return 0;
 974 }
 975
 976
 977
 978 // This will bind a socket to a port. It works for UDP/TCP
 979 int BindSocket (int sockfd, struct sockaddr_in client, struct sockaddr_in server, int port, char* addr)
 980 {
 981         memset((char *)&server,0,sizeof(server));
 982         struct in_addr addy;
 983         inet_aton(addr,&addy);
 984         server.sin_family = AF_INET;
 985         if (!strcmp(addr,""))
 986         {
 987                 server.sin_addr.s_addr = htonl(INADDR_ANY);
 988         }
 989         else
 990         {
 991                 server.sin_addr = addy;
 992         }
 993         server.sin_port = htons(port);
 994         if (bind(sockfd,(struct sockaddr*)&server,sizeof(server))<0)
 995         {
 996                 return(ERROR);
 997         }
 998         else
 999         {
1000                 listen(sockfd, Config->MaxConn);
1001                 return(TRUE);
1002         }
1003 }
1004
1005
1006 // Open a TCP Socket
1007 int OpenTCPSocket (void)
1008 {
1009         int sockfd;
1010         int on = 1;
1011         struct linger linger = { 0 };
1012
1013         if ((sockfd = socket (AF_INET, SOCK_STREAM, 0)) < 0)
1014                 return (ERROR);
1015         else
1016         {
1017                 setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (const char*)&on, sizeof(on));
1018                 /* This is BSD compatible, setting l_onoff to 0 is *NOT* http://web.irc.org/mla/ircd-dev/msg02259.html */
1019                 linger.l_onoff = 1;
1020                 linger.l_linger = 1;
1021                 setsockopt(sockfd, SOL_SOCKET, SO_LINGER, (const char*)&linger,sizeof(linger));
1022                 return (sockfd);
1023         }
1024 }
1025
1026 int BindPorts()
1027 {
1028         char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
1029         sockaddr_in client,server;
1030         int clientportcount = 0;
1031         int BoundPortCount;
1032         for (int count = 0; count < Config->ConfValueEnum("bind",&Config->config_f); count++)
1033         {
1034                 Config->ConfValue("bind","port",count,configToken,&Config->config_f);
1035                 Config->ConfValue("bind","address",count,Addr,&Config->config_f);
1036                 Config->ConfValue("bind","type",count,Type,&Config->config_f);
1037                 if (strcmp(Type,"servers"))
1038                 {
1039                         // modules handle server bind types now,
1040                         // its not a typo in the strcmp.
1041                         Config->ports[clientportcount] = atoi(configToken);
1042                         strlcpy(Config->addrs[clientportcount],Addr,256);
1043                         clientportcount++;
1044                         log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
1045                 }
1046         }
1047         int PortCount = clientportcount;
1048
1049         for (int count = 0; count < PortCount; count++)
1050         {
1051                 if ((openSockfd[BoundPortCount] = OpenTCPSocket()) == ERROR)
1052                 {
1053                         log(DEBUG,"InspIRCd: startup: bad fd %lu",(unsigned long)openSockfd[BoundPortCount]);
1054                         return(ERROR);
1055                 }
1056                 if (BindSocket(openSockfd[BoundPortCount],client,server,Config->ports[count],Config->addrs[count]) == ERROR)
1057                 {
1058                         log(DEFAULT,"InspIRCd: startup: failed to bind port %lu",(unsigned long)Config->ports[count]);
1059                 }
1060                 else    /* well we at least bound to one socket so we'll continue */
1061                 {
1062                         BoundPortCount++;
1063                 }
1064         }
1065
1066         /* if we didn't bind to anything then abort */
1067         if (!BoundPortCount)
1068         {
1069                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
1070                 printf("\nERROR: Was not able to bind any of %lu ports! Please check your configuration.\n\n", (unsigned long)PortCount);
1071                 return (ERROR);
1072         }
1073
1074         return BoundPortCount;
1075 }
1076