src/configreader.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 #include "inspircd_config.h"
  18 #include "configreader.h"
  19 #include <string>
  20 #include <sstream>
  21 #include <iostream>
  22 #include <fstream>
  23 #include "message.h"
  24 #include "inspircd.h"
  25 #include "inspstring.h"
  26 #include "helperfuncs.h"
  27 #include "userprocess.h"
  28 #include "xline.h"
  29
  30 extern InspIRCd* ServerInstance;
  31 extern time_t TIME;
  32
  33 extern int MODCOUNT;
  34 extern std::vector<Module*> modules;
  35 extern std::vector<ircd_module*> factory;
  36
  37 using irc::sockets::BindPorts;
  38
  39 std::vector<std::string> old_module_names, new_module_names, added_modules, removed_modules;
  40
  41 ServerConfig::ServerConfig()
  42 {
  43         this->ClearStack();
  44         *TempDir = *ServerName = *Network = *ServerDesc = *AdminName = '\0';
  45         *HideWhoisServer = *AdminEmail = *AdminNick = *diepass = *restartpass = '\0';
  46         *CustomVersion = *motd = *rules = *PrefixQuit = *DieValue = *DNSServer = '\0';
  47         *OperOnlyStats = *ModPath = *MyExecutable = *DisabledCommands = *PID = '\0';
  48         log_file = NULL;
  49         NoUserDns = forcedebug = OperSpyWhois = nofork = HideBans = HideSplits = false;
  50         writelog = AllowHalfop = true;
  51         dns_timeout = DieDelay = 5;
  52         MaxTargets = 20;
  53         NetBufferSize = 10240;
  54         SoftLimit = MAXCLIENTS;
  55         MaxConn = SOMAXCONN;
  56         MaxWhoResults = 100;
  57         debugging = 0;
  58         LogLevel = DEFAULT;
  59         maxbans.clear();
  60 }
  61
  62 void ServerConfig::ClearStack()
  63 {
  64         include_stack.clear();
  65 }
  66
  67 Module* ServerConfig::GetIOHook(int port)
  68 {
  69         std::map<int,Module*>::iterator x = IOHookModule.find(port);
  70         return (x != IOHookModule.end() ? x->second : NULL);
  71 }
  72
  73 bool ServerConfig::AddIOHook(int port, Module* iomod)
  74 {
  75         if (!GetIOHook(port))
  76         {
  77                 IOHookModule[port] = iomod;
  78                 return true;
  79         }
  80         else
  81         {
  82                 ModuleException err("Port already hooked by another module");
  83                 throw(err);
  84                 return false;
  85         }
  86 }
  87
  88 bool ServerConfig::DelIOHook(int port)
  89 {
  90         std::map<int,Module*>::iterator x = IOHookModule.find(port);
  91         if (x != IOHookModule.end())
  92         {
  93                 IOHookModule.erase(x);
  94                 return true;
  95         }
  96         return false;
  97 }
  98
  99 bool ServerConfig::CheckOnce(char* tag, bool bail, userrec* user)
 100 {
 101         int count = ConfValueEnum(this->config_data, tag);
 102
 103         if (count > 1)
 104         {
 105                 if (bail)
 106                 {
 107                         printf("There were errors in your configuration:\nYou have more than one <%s> tag, this is not permitted.\n",tag);
 108                         Exit(0);
 109                 }
 110                 else
 111                 {
 112                         if (user)
 113                         {
 114                                 user->WriteServ("There were errors in your configuration:");
 115                                 user->WriteServ("You have more than one <%s> tag, this is not permitted.\n",tag);
 116                         }
 117                         else
 118                         {
 119                                 WriteOpers("There were errors in the configuration file:");
 120                                 WriteOpers("You have more than one <%s> tag, this is not permitted.\n",tag);
 121                         }
 122                 }
 123                 return false;
 124         }
 125         if (count < 1)
 126         {
 127                 if (bail)
 128                 {
 129                         printf("There were errors in your configuration:\nYou have not defined a <%s> tag, this is required.\n",tag);
 130                         Exit(0);
 131                 }
 132                 else
 133                 {
 134                         if (user)
 135                         {
 136                                 user->WriteServ("There were errors in your configuration:");
 137                                 user->WriteServ("You have not defined a <%s> tag, this is required.",tag);
 138                         }
 139                         else
 140                         {
 141                                 WriteOpers("There were errors in the configuration file:");
 142                                 WriteOpers("You have not defined a <%s> tag, this is required.",tag);
 143                         }
 144                 }
 145                 return false;
 146         }
 147         return true;
 148 }
 149
 150 bool NoValidation(ServerConfig* conf, const char* tag, const char* value, void* data)
 151 {
 152         log(DEBUG,"No validation for <%s:%s>",tag,value);
 153         return true;
 154 }
 155
 156 bool ValidateTempDir(ServerConfig* conf, const char* tag, const char* value, void* data)
 157 {
 158         char* x = (char*)data;
 159         if (!*x)
 160                 strlcpy(x,"/tmp",1024);
 161         return true;
 162 }
 163
 164 bool ValidateMaxTargets(ServerConfig* conf, const char* tag, const char* value, void* data)
 165 {
 166         int* x = (int*)data;
 167         if ((*x < 0) || (*x > 31))
 168         {
 169                 log(DEFAULT,"WARNING: <options:maxtargets> value is greater than 31 or less than 0, set to 20.");
 170                 *x = 20;
 171         }
 172         return true;
 173 }
 174
 175 bool ValidateSoftLimit(ServerConfig* conf, const char* tag, const char* value, void* data)
 176 {
 177         int* x = (int*)data;
 178         if ((*x < 1) || (*x > MAXCLIENTS))
 179         {
 180                 log(DEFAULT,"WARNING: <options:softlimit> value is greater than %d or less than 0, set to %d.",MAXCLIENTS,MAXCLIENTS);
 181                 *x = MAXCLIENTS;
 182         }
 183         return true;
 184 }
 185
 186 bool ValidateMaxConn(ServerConfig* conf, const char* tag, const char* value, void* data)
 187 {
 188         int* x = (int*)data;
 189         if (*x > SOMAXCONN)
 190                 log(DEFAULT,"WARNING: <options:somaxconn> value may be higher than the system-defined SOMAXCONN value!");
 191         if (!*x)
 192                 *x = SOMAXCONN;
 193         return true;
 194 }
 195
 196 bool ValidateDnsTimeout(ServerConfig* conf, const char* tag, const char* value, void* data)
 197 {
 198         int* x = (int*)data;
 199         if (!*x)
 200                 *x = 5;
 201         return true;
 202 }
 203
 204 bool InitializeDisabledCommands(const char* data, InspIRCd* ServerInstance)
 205 {
 206         std::stringstream dcmds(data);
 207         std::string thiscmd;
 208
 209         /* Enable everything first */
 210         for (nspace::hash_map<std::string,command_t*>::iterator x = ServerInstance->Parser->cmdlist.begin(); x != ServerInstance->Parser->cmdlist.end(); x++)
 211                 x->second->Disable(false);
 212
 213         /* Now disable all the ones which the user wants disabled */
 214         while (dcmds >> thiscmd)
 215         {
 216                 nspace::hash_map<std::string,command_t*>::iterator cm = ServerInstance->Parser->cmdlist.find(thiscmd);
 217                 if (cm != ServerInstance->Parser->cmdlist.end())
 218                 {
 219                         log(DEBUG,"Disabling command '%s'",cm->second->command.c_str());
 220                         cm->second->Disable(true);
 221                 }
 222         }
 223         return true;
 224 }
 225
 226 bool ValidateDnsServer(ServerConfig* conf, const char* tag, const char* value, void* data)
 227 {
 228         char* x = (char*)data;
 229         if (!*x)
 230         {
 231                 // attempt to look up their nameserver from /etc/resolv.conf
 232                 log(DEFAULT,"WARNING: <dns:server> not defined, attempting to find working server in /etc/resolv.conf...");
 233                 ifstream resolv("/etc/resolv.conf");
 234                 std::string nameserver;
 235                 bool found_server = false;
 236
 237                 if (resolv.is_open())
 238                 {
 239                         while (resolv >> nameserver)
 240                         {
 241                                 if ((nameserver == "nameserver") && (!found_server))
 242                                 {
 243                                         resolv >> nameserver;
 244                                         strlcpy(x,nameserver.c_str(),MAXBUF);
 245                                         found_server = true;
 246                                         log(DEFAULT,"<dns:server> set to '%s' as first resolver in /etc/resolv.conf.",nameserver.c_str());
 247                                 }
 248                         }
 249
 250                         if (!found_server)
 251                         {
 252                                 log(DEFAULT,"/etc/resolv.conf contains no viable nameserver entries! Defaulting to nameserver '127.0.0.1'!");
 253                                 strlcpy(x,"127.0.0.1",MAXBUF);
 254                         }
 255                 }
 256                 else
 257                 {
 258                         log(DEFAULT,"/etc/resolv.conf can't be opened! Defaulting to nameserver '127.0.0.1'!");
 259                         strlcpy(x,"127.0.0.1",MAXBUF);
 260                 }
 261         }
 262         return true;
 263 }
 264
 265 bool ValidateModPath(ServerConfig* conf, const char* tag, const char* value, void* data)
 266 {
 267         char* x = (char*)data;
 268         if (!*x)
 269                 strlcpy(x,MOD_PATH,MAXBUF);
 270         return true;
 271 }
 272
 273
 274 bool ValidateServerName(ServerConfig* conf, const char* tag, const char* value, void* data)
 275 {
 276         char* x = (char*)data;
 277         if (!strchr(x,'.'))
 278         {
 279                 log(DEFAULT,"WARNING: <server:name> '%s' is not a fully-qualified domain name. Changed to '%s%c'",x,x,'.');
 280                 charlcat(x,'.',MAXBUF);
 281         }
 282         //strlower(x);
 283         return true;
 284 }
 285
 286 bool ValidateNetBufferSize(ServerConfig* conf, const char* tag, const char* value, void* data)
 287 {
 288         if ((!ServerInstance->Config->NetBufferSize) || (ServerInstance->Config->NetBufferSize > 65535) || (ServerInstance->Config->NetBufferSize < 1024))
 289         {
 290                 log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
 291                 ServerInstance->Config->NetBufferSize = 10240;
 292         }
 293         return true;
 294 }
 295
 296 bool ValidateMaxWho(ServerConfig* conf, const char* tag, const char* value, void* data)
 297 {
 298         if ((!ServerInstance->Config->MaxWhoResults) || (ServerInstance->Config->MaxWhoResults > 65535) || (ServerInstance->Config->MaxWhoResults < 1))
 299         {
 300                 log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128.");
 301                 ServerInstance->Config->MaxWhoResults = 128;
 302         }
 303         return true;
 304 }
 305
 306 bool ValidateLogLevel(ServerConfig* conf, const char* tag, const char* value, void* data)
 307 {
 308         const char* dbg = (const char*)data;
 309         ServerInstance->Config->LogLevel = DEFAULT;
 310         if (!strcmp(dbg,"debug"))
 311         {
 312                 ServerInstance->Config->LogLevel = DEBUG;
 313                 ServerInstance->Config->debugging = 1;
 314         }
 315         else if (!strcmp(dbg,"verbose"))
 316                 ServerInstance->Config->LogLevel = VERBOSE;
 317         else if (!strcmp(dbg,"default"))
 318                 ServerInstance->Config->LogLevel = DEFAULT;
 319         else if (!strcmp(dbg,"sparse"))
 320                 ServerInstance->Config->LogLevel = SPARSE;
 321         else if (!strcmp(dbg,"none"))
 322                 ServerInstance->Config->LogLevel = NONE;
 323         return true;
 324 }
 325
 326 bool ValidateMotd(ServerConfig* conf, const char* tag, const char* value, void* data)
 327 {
 328         conf->ReadFile(ServerInstance->Config->MOTD,ServerInstance->Config->motd);
 329         return true;
 330 }
 331
 332 bool ValidateRules(ServerConfig* conf, const char* tag, const char* value, void* data)
 333 {
 334         conf->ReadFile(ServerInstance->Config->RULES,ServerInstance->Config->rules);
 335         return true;
 336 }
 337
 338 /* Callback called before processing the first <connect> tag
 339  */
 340 bool InitConnect(ServerConfig* conf, const char* tag)
 341 {
 342         log(DEFAULT,"Reading connect classes...");
 343         ServerInstance->Config->Classes.clear();
 344         return true;
 345 }
 346
 347 /* Callback called to process a single <connect> tag
 348  */
 349 bool DoConnect(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
 350 {
 351         ConnectClass c;
 352         char* allow = (char*)values[0]; /* Yeah, there are a lot of values. Live with it. */
 353         char* deny = (char*)values[1];
 354         char* password = (char*)values[2];
 355         int* timeout = (int*)values[3];
 356         int* pingfreq = (int*)values[4];
 357         int* flood = (int*)values[5];
 358         int* threshold = (int*)values[6];
 359         int* sendq = (int*)values[7];
 360         int* recvq = (int*)values[8];
 361         int* localmax = (int*)values[9];
 362         int* globalmax = (int*)values[10];
 363
 364         if (*allow)
 365         {
 366                 c.host = allow;
 367                 c.type = CC_ALLOW;
 368                 c.pass = password;
 369                 c.registration_timeout = *timeout;
 370                 c.pingtime = *pingfreq;
 371                 c.flood = *flood;
 372                 c.threshold = *threshold;
 373                 c.sendqmax = *sendq;
 374                 c.recvqmax = *recvq;
 375                 c.maxlocal = *localmax;
 376                 c.maxglobal = *globalmax;
 377
 378
 379                 if (c.maxlocal == 0)
 380                         c.maxlocal = 3;
 381                 if (c.maxglobal == 0)
 382                         c.maxglobal = 3;
 383                 if (c.threshold == 0)
 384                 {
 385                         c.threshold = 1;
 386                         c.flood = 999;
 387                         log(DEFAULT,"Warning: Connect allow line '%s' has no flood/threshold settings. Setting this tag to 999 lines in 1 second.",c.host.c_str());
 388                 }
 389                 if (c.sendqmax == 0)
 390                         c.sendqmax = 262114;
 391                 if (c.recvqmax == 0)
 392                         c.recvqmax = 4096;
 393                 if (c.registration_timeout == 0)
 394                         c.registration_timeout = 90;
 395                 if (c.pingtime == 0)
 396                         c.pingtime = 120;
 397                 ServerInstance->Config->Classes.push_back(c);
 398         }
 399         else
 400         {
 401                 c.host = deny;
 402                 c.type = CC_DENY;
 403                 ServerInstance->Config->Classes.push_back(c);
 404                 log(DEBUG,"Read connect class type DENY, host=%s",deny);
 405         }
 406
 407         return true;
 408 }
 409
 410 /* Callback called when there are no more <connect> tags
 411  */
 412 bool DoneConnect(ServerConfig* conf, const char* tag)
 413 {
 414         log(DEBUG,"DoneConnect called for tag: %s",tag);
 415         return true;
 416 }
 417
 418 /* Callback called before processing the first <uline> tag
 419  */
 420 bool InitULine(ServerConfig* conf, const char* tag)
 421 {
 422         ServerInstance->Config->ulines.clear();
 423         return true;
 424 }
 425
 426 /* Callback called to process a single <uline> tag
 427  */
 428 bool DoULine(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
 429 {
 430         char* server = (char*)values[0];
 431         log(DEBUG,"Read ULINE '%s'",server);
 432         ServerInstance->Config->ulines.push_back(server);
 433         return true;
 434 }
 435
 436 /* Callback called when there are no more <uline> tags
 437  */
 438 bool DoneULine(ServerConfig* conf, const char* tag)
 439 {
 440         return true;
 441 }
 442
 443 /* Callback called before processing the first <module> tag
 444  */
 445 bool InitModule(ServerConfig* conf, const char* tag)
 446 {
 447         old_module_names.clear();
 448         new_module_names.clear();
 449         added_modules.clear();
 450         removed_modules.clear();
 451         for (std::vector<std::string>::iterator t = ServerInstance->Config->module_names.begin(); t != ServerInstance->Config->module_names.end(); t++)
 452         {
 453                 old_module_names.push_back(*t);
 454         }
 455         return true;
 456 }
 457
 458 /* Callback called to process a single <module> tag
 459  */
 460 bool DoModule(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
 461 {
 462         char* modname = (char*)values[0];
 463         new_module_names.push_back(modname);
 464         return true;
 465 }
 466
 467 /* Callback called when there are no more <module> tags
 468  */
 469 bool DoneModule(ServerConfig* conf, const char* tag)
 470 {
 471         // now create a list of new modules that are due to be loaded
 472         // and a seperate list of modules which are due to be unloaded
 473         for (std::vector<std::string>::iterator _new = new_module_names.begin(); _new != new_module_names.end(); _new++)
 474         {
 475                 bool added = true;
 476
 477                 for (std::vector<std::string>::iterator old = old_module_names.begin(); old != old_module_names.end(); old++)
 478                 {
 479                         if (*old == *_new)
 480                                 added = false;
 481                 }
 482
 483                 if (added)
 484                         added_modules.push_back(*_new);
 485         }
 486
 487         for (std::vector<std::string>::iterator oldm = old_module_names.begin(); oldm != old_module_names.end(); oldm++)
 488         {
 489                 bool removed = true;
 490                 for (std::vector<std::string>::iterator newm = new_module_names.begin(); newm != new_module_names.end(); newm++)
 491                 {
 492                         if (*newm == *oldm)
 493                                 removed = false;
 494                 }
 495
 496                 if (removed)
 497                         removed_modules.push_back(*oldm);
 498         }
 499         return true;
 500 }
 501
 502 /* Callback called before processing the first <banlist> tag
 503  */
 504 bool InitMaxBans(ServerConfig* conf, const char* tag)
 505 {
 506         ServerInstance->Config->maxbans.clear();
 507         return true;
 508 }
 509
 510 /* Callback called to process a single <banlist> tag
 511  */
 512 bool DoMaxBans(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
 513 {
 514         char* channel = (char*)values[0];
 515         int* limit = (int*)values[1];
 516         ServerInstance->Config->maxbans[channel] = *limit;
 517         return true;
 518 }
 519
 520 /* Callback called when there are no more <banlist> tags.
 521  */
 522 bool DoneMaxBans(ServerConfig* conf, const char* tag)
 523 {
 524         return true;
 525 }
 526
 527 void ServerConfig::Read(bool bail, userrec* user)
 528 {
 529         char debug[MAXBUF];             /* Temporary buffer for debugging value */
 530         char* data[12];                 /* Temporary buffers for reading multiple occurance tags into */
 531         void* ptr[12];                  /* Temporary pointers for passing to callbacks */
 532         int r_i[12];                    /* Temporary array for casting */
 533         int rem = 0, add = 0;           /* Number of modules added, number of modules removed */
 534         std::ostringstream errstr;      /* String stream containing the error output */
 535
 536         /* These tags MUST occur and must ONLY occur once in the config file */
 537         static char* Once[] = { "server", "admin", "files", "power", "options", "pid", NULL };
 538
 539         /* These tags can occur ONCE or not at all */
 540         static InitialConfig Values[] = {
 541                 {"options",             "softlimit",                    &this->SoftLimit,               DT_INTEGER, ValidateSoftLimit},
 542                 {"options",             "somaxconn",                    &this->MaxConn,                 DT_INTEGER, ValidateMaxConn},
 543                 {"server",              "name",                         &this->ServerName,              DT_CHARPTR, ValidateServerName},
 544                 {"server",              "description",                  &this->ServerDesc,              DT_CHARPTR, NoValidation},
 545                 {"server",              "network",                      &this->Network,                 DT_CHARPTR, NoValidation},
 546                 {"admin",               "name",                         &this->AdminName,               DT_CHARPTR, NoValidation},
 547                 {"admin",               "email",                        &this->AdminEmail,              DT_CHARPTR, NoValidation},
 548                 {"admin",               "nick",                         &this->AdminNick,               DT_CHARPTR, NoValidation},
 549                 {"files",               "motd",                         &this->motd,                    DT_CHARPTR, ValidateMotd},
 550                 {"files",               "rules",                        &this->rules,                   DT_CHARPTR, ValidateRules},
 551                 {"power",               "diepass",                      &this->diepass,                 DT_CHARPTR, NoValidation},
 552                 {"power",               "pauseval",                     &this->DieDelay,                DT_INTEGER, NoValidation},
 553                 {"power",               "restartpass",                  &this->restartpass,             DT_CHARPTR, NoValidation},
 554                 {"options",             "prefixquit",                   &this->PrefixQuit,              DT_CHARPTR, NoValidation},
 555                 {"die",                 "value",                        &this->DieValue,                DT_CHARPTR, NoValidation},
 556                 {"options",             "loglevel",                     &debug,                         DT_CHARPTR, ValidateLogLevel},
 557                 {"options",             "netbuffersize",                &this->NetBufferSize,           DT_INTEGER, ValidateNetBufferSize},
 558                 {"options",             "maxwho",                       &this->MaxWhoResults,           DT_INTEGER, ValidateMaxWho},
 559                 {"options",             "allowhalfop",                  &this->AllowHalfop,             DT_BOOLEAN, NoValidation},
 560                 {"dns",                 "server",                       &this->DNSServer,               DT_CHARPTR, ValidateDnsServer},
 561                 {"dns",                 "timeout",                      &this->dns_timeout,             DT_INTEGER, ValidateDnsTimeout},
 562                 {"options",             "moduledir",                    &this->ModPath,                 DT_CHARPTR, ValidateModPath},
 563                 {"disabled",            "commands",                     &this->DisabledCommands,        DT_CHARPTR, NoValidation},
 564                 {"options",             "operonlystats",                &this->OperOnlyStats,           DT_CHARPTR, NoValidation},
 565                 {"options",             "customversion",                &this->CustomVersion,           DT_CHARPTR, NoValidation},
 566                 {"options",             "hidesplits",                   &this->HideSplits,              DT_BOOLEAN, NoValidation},
 567                 {"options",             "hidebans",                     &this->HideBans,                DT_BOOLEAN, NoValidation},
 568                 {"options",             "hidewhois",                    &this->HideWhoisServer,         DT_CHARPTR, NoValidation},
 569                 {"options",             "operspywhois",                 &this->OperSpyWhois,            DT_BOOLEAN, NoValidation},
 570                 {"options",             "tempdir",                      &this->TempDir,                 DT_CHARPTR, ValidateTempDir},
 571                 {"options",             "nouserdns",                    &this->NoUserDns,               DT_BOOLEAN, NoValidation},
 572                 {"options",             "syntaxhints",                  &this->SyntaxHints,             DT_BOOLEAN, NoValidation},
 573                 {"pid",                 "file",                         &this->PID,                     DT_CHARPTR, NoValidation},
 574                 {NULL}
 575         };
 576
 577         /* These tags can occur multiple times, and therefore they have special code to read them
 578          * which is different to the code for reading the singular tags listed above.
 579          */
 580         static MultiConfig MultiValues[] = {
 581
 582                 {"connect",
 583                                 {"allow",       "deny",         "password",     "timeout",      "pingfreq",     "flood",
 584                                 "threshold",    "sendq",        "recvq",        "localmax",     "globalmax",    NULL},
 585                                 {DT_CHARPTR,    DT_CHARPTR,     DT_CHARPTR,     DT_INTEGER,     DT_INTEGER,     DT_INTEGER,
 586                                  DT_INTEGER,    DT_INTEGER,     DT_INTEGER,     DT_INTEGER,     DT_INTEGER},
 587                                 InitConnect, DoConnect, DoneConnect},
 588
 589                 {"uline",
 590                                 {"server",      NULL},
 591                                 {DT_CHARPTR},
 592                                 InitULine,DoULine,DoneULine},
 593
 594                 {"banlist",
 595                                 {"chan",        "limit",        NULL},
 596                                 {DT_CHARPTR,    DT_INTEGER},
 597                                 InitMaxBans, DoMaxBans, DoneMaxBans},
 598
 599                 {"module",
 600                                 {"name",        NULL},
 601                                 {DT_CHARPTR},
 602                                 InitModule, DoModule, DoneModule},
 603
 604                 {"badip",
 605                                 {"reason",      "ipmask",       NULL},
 606                                 {DT_CHARPTR,    DT_CHARPTR},
 607                                 InitXLine, DoZLine, DoneXLine},
 608
 609                 {"badnick",
 610                                 {"reason",      "nick",         NULL},
 611                                 {DT_CHARPTR,    DT_CHARPTR},
 612                                 InitXLine, DoQLine, DoneXLine},
 613
 614                 {"badhost",
 615                                 {"reason",      "host",         NULL},
 616                                 {DT_CHARPTR,    DT_CHARPTR},
 617                                 InitXLine, DoKLine, DoneXLine},
 618
 619                 {"exception",
 620                                 {"reason",      "host",         NULL},
 621                                 {DT_CHARPTR,    DT_CHARPTR},
 622                                 InitXLine, DoELine, DoneXLine},
 623
 624                 {"type",
 625                                 {"name",        "classes",      NULL},
 626                                 {DT_CHARPTR,    DT_CHARPTR},
 627                                 InitTypes, DoType, DoneClassesAndTypes},
 628
 629                 {"class",
 630                                 {"name",        "commands",     NULL},
 631                                 {DT_CHARPTR,    DT_CHARPTR},
 632                                 InitClasses, DoClass, DoneClassesAndTypes},
 633
 634                 {NULL}
 635         };
 636
 637         include_stack.clear();
 638
 639         /* Load and parse the config file, if there are any errors then explode */
 640
 641         /* Make a copy here so if it fails then we can carry on running with an unaffected config */
 642         ConfigDataHash newconfig;
 643
 644         if (this->LoadConf(newconfig, CONFIG_FILE, errstr))
 645         {
 646                 /* If we succeeded, set the ircd config to the new one */
 647                 this->config_data = newconfig;
 648
 649 /*              int c = 1;
 650                 std::string last;
 651
 652                 for(ConfigDataHash::const_iterator i = this->config_data.begin(); i != this->config_data.end(); i++)
 653                 {
 654                         c = (i->first != last) ? 1 : c+1;
 655                         last = i->first;
 656
 657                         std::cout << "[" << i->first << " " << c << "/" << this->config_data.count(i->first) << "]" << std::endl;
 658
 659                         for(KeyValList::const_iterator j = i->second.begin(); j != i->second.end(); j++)
 660                                 std::cout << "\t" << j->first << " = " << j->second << std::endl;
 661
 662                         std::cout << "[/" << i->first << " " << c << "/" << this->config_data.count(i->first) << "]" << std::endl;
 663                 }
 664  */     }
 665         else
 666         {
 667                 log(DEFAULT, "There were errors in your configuration:\n%s", errstr.str().c_str());
 668
 669                 if (bail)
 670                 {
 671                         /* Unneeded because of the log() aboive? */
 672                         printf("There were errors in your configuration:\n%s",errstr.str().c_str());
 673                         Exit(0);
 674                 }
 675                 else
 676                 {
 677                         std::string errors = errstr.str();
 678                         std::string::size_type start;
 679                         unsigned int prefixlen;
 680
 681                         start = 0;
 682                         /* ":ServerInstance->Config->ServerName NOTICE user->nick :" */
 683                         prefixlen = strlen(this->ServerName) + strlen(user->nick) + 11;
 684
 685                         if (user)
 686                         {
 687                                 user->WriteServ("NOTICE %s :There were errors in the configuration file:",user->nick);
 688
 689                                 while(start < errors.length())
 690                                 {
 691                                         user->WriteServ("NOTICE %s :%s",user->nick, errors.substr(start, 510 - prefixlen).c_str());
 692                                         start += 510 - prefixlen;
 693                                 }
 694                         }
 695                         else
 696                         {
 697                                 WriteOpers("There were errors in the configuration file:");
 698
 699                                 while(start < errors.length())
 700                                 {
 701                                         WriteOpers(errors.substr(start, 360).c_str());
 702                                         start += 360;
 703                                 }
 704                         }
 705
 706                         return;
 707                 }
 708         }
 709
 710         /* Check we dont have more than one of singular tags, or any of them missing
 711          */
 712         for (int Index = 0; Once[Index]; Index++)
 713                 if (!CheckOnce(Once[Index],bail,user))
 714                         return;
 715
 716         /* Read the values of all the tags which occur once or not at all, and call their callbacks.
 717          */
 718         for (int Index = 0; Values[Index].tag; Index++)
 719         {
 720                 int* val_i = (int*) Values[Index].val;
 721                 char* val_c = (char*) Values[Index].val;
 722
 723                 switch (Values[Index].datatype)
 724                 {
 725                         case DT_CHARPTR:
 726                                 /* Assuming MAXBUF here, potentially unsafe */
 727                                 ConfValue(this->config_data, Values[Index].tag, Values[Index].value, 0, val_c, MAXBUF);
 728                         break;
 729
 730                         case DT_INTEGER:
 731                                 ConfValueInteger(this->config_data, Values[Index].tag, Values[Index].value, 0, *val_i);
 732                         break;
 733
 734                         case DT_BOOLEAN:
 735                                 *val_i = ConfValueBool(this->config_data, Values[Index].tag, Values[Index].value, 0);
 736                         break;
 737
 738                         case DT_NOTHING:
 739                         break;
 740                 }
 741
 742                 Values[Index].validation_function(this, Values[Index].tag, Values[Index].value, Values[Index].val);
 743         }
 744
 745         /* Claim memory for use when reading multiple tags
 746          */
 747         for (int n = 0; n < 12; n++)
 748                 data[n] = new char[MAXBUF];
 749
 750         /* Read the multiple-tag items (class tags, connect tags, etc)
 751          * and call the callbacks associated with them. We have three
 752          * callbacks for these, a 'start', 'item' and 'end' callback.
 753          */
 754
 755         /* XXX - Make this use ConfValueInteger and so on */
 756         for (int Index = 0; MultiValues[Index].tag; Index++)
 757         {
 758                 MultiValues[Index].init_function(this, MultiValues[Index].tag);
 759
 760                 int number_of_tags = ConfValueEnum(this->config_data, MultiValues[Index].tag);
 761
 762                 for (int tagnum = 0; tagnum < number_of_tags; tagnum++)
 763                 {
 764                         for (int valuenum = 0; MultiValues[Index].items[valuenum]; valuenum++)
 765                         {
 766                                 ConfValue(this->config_data, MultiValues[Index].tag, MultiValues[Index].items[valuenum], tagnum, data[valuenum], MAXBUF);
 767
 768                                 switch (MultiValues[Index].datatype[valuenum])
 769                                 {
 770                                         case DT_CHARPTR:
 771                                                 ptr[valuenum] = data[valuenum];
 772                                         break;
 773                                         case DT_INTEGER:
 774                                                 r_i[valuenum] = atoi(data[valuenum]);
 775                                                 ptr[valuenum] = &r_i[valuenum];
 776                                         break;
 777                                         case DT_BOOLEAN:
 778                                                 r_i[valuenum] = ((*data[valuenum] == tolower('y')) || (*data[valuenum] == tolower('t')) || (*data[valuenum] == '1'));
 779                                                 ptr[valuenum] = &r_i[valuenum];
 780                                         break;
 781                                         default:
 782                                         break;
 783                                 }
 784                         }
 785                         MultiValues[Index].validation_function(this, MultiValues[Index].tag, (char**)MultiValues[Index].items, ptr, MultiValues[Index].datatype);
 786                 }
 787
 788                 MultiValues[Index].finish_function(this, MultiValues[Index].tag);
 789         }
 790
 791         /* Free any memory we claimed
 792          */
 793         for (int n = 0; n < 12; n++)
 794                 delete[] data[n];
 795
 796         // write once here, to try it out and make sure its ok
 797         ServerInstance->WritePID(this->PID);
 798
 799         log(DEFAULT,"Done reading configuration file, InspIRCd is now starting.");
 800
 801         /* If we're rehashing, let's load any new modules, and unload old ones
 802          */
 803         if (!bail)
 804         {
 805                 ServerInstance->stats->BoundPortCount = BindPorts(false);
 806
 807                 if (!removed_modules.empty())
 808                         for (std::vector<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 809                         {
 810                                 if (ServerInstance->UnloadModule(removing->c_str()))
 811                                 {
 812                                         WriteOpers("*** REHASH UNLOADED MODULE: %s",removing->c_str());
 813
 814                                         if (user)
 815                                                 user->WriteServ("973 %s %s :Module %s successfully unloaded.",user->nick, removing->c_str(), removing->c_str());
 816
 817                                         rem++;
 818                                 }
 819                                 else
 820                                 {
 821                                         if (user)
 822                                                 user->WriteServ("972 %s %s :Failed to unload module %s: %s",user->nick, removing->c_str(), removing->c_str(), ServerInstance->ModuleError());
 823                                 }
 824                         }
 825
 826                 if (!added_modules.empty())
 827                 for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 828                 {
 829                         if (ServerInstance->LoadModule(adding->c_str()))
 830                         {
 831                                 WriteOpers("*** REHASH LOADED MODULE: %s",adding->c_str());
 832
 833                                 if (user)
 834                                         user->WriteServ("975 %s %s :Module %s successfully loaded.",user->nick, adding->c_str(), adding->c_str());
 835
 836                                 add++;
 837                         }
 838                         else
 839                         {
 840                                 if (user)
 841                                         user->WriteServ("974 %s %s :Failed to load module %s: %s",user->nick, adding->c_str(), adding->c_str(), ServerInstance->ModuleError());
 842                         }
 843                 }
 844
 845                 log(DEFAULT,"Successfully unloaded %lu of %lu modules and loaded %lu of %lu modules.",(unsigned long)rem,(unsigned long)removed_modules.size(),(unsigned long)add,(unsigned long)added_modules.size());
 846         }
 847 }
 848
 849 bool ServerConfig::LoadConf(ConfigDataHash &target, const char* filename, std::ostringstream &errorstream)
 850 {
 851         std::ifstream conf(filename);
 852         std::string line;
 853         char ch;
 854         long linenumber;
 855         bool in_tag;
 856         bool in_quote;
 857         bool in_comment;
 858
 859         linenumber = 1;
 860         in_tag = false;
 861         in_quote = false;
 862         in_comment = false;
 863
 864         /* Check if the file open failed first */
 865         if (!conf)
 866         {
 867                 errorstream << "LoadConf: Couldn't open config file: " << filename << std::endl;
 868                 return false;
 869         }
 870
 871         /* Fix the chmod of the file to restrict it to the current user and group */
 872         chmod(filename,0600);
 873
 874         for (unsigned int t = 0; t < include_stack.size(); t++)
 875         {
 876                 if (std::string(filename) == include_stack[t])
 877                 {
 878                         errorstream << "File " << filename << " is included recursively (looped inclusion)." << std::endl;
 879                         return false;
 880                 }
 881         }
 882
 883         /* It's not already included, add it to the list of files we've loaded */
 884         include_stack.push_back(filename);
 885
 886         /* Start reading characters... */
 887         while(conf.get(ch))
 888         {
 889                 /*
 890                  * Here we try and get individual tags on separate lines,
 891                  * this would be so easy if we just made people format
 892                  * their config files like that, but they don't so...
 893                  * We check for a '<' and then know the line is over when
 894                  * we get a '>' not inside quotes. If we find two '<' and
 895                  * no '>' then die with an error.
 896                  */
 897
 898                 if((ch == '#') && !in_quote)
 899                         in_comment = true;
 900
 901                 if(((ch == '\n') || (ch == '\r')) && in_quote)
 902                 {
 903                         errorstream << "Got a newline within a quoted section, this is probably a typo: " << filename << ":" << linenumber << std::endl;
 904                         return false;
 905                 }
 906
 907                 switch(ch)
 908                 {
 909                         case '\n':
 910                                 linenumber++;
 911                         case '\r':
 912                                 in_comment = false;
 913                         case '\0':
 914                                 continue;
 915                         case '\t':
 916                                 ch = ' ';
 917                 }
 918
 919                 if(in_comment)
 920                         continue;
 921
 922                 /* XXX: Added by Brain, May 1st 2006 - Escaping of characters.
 923                  * Note that this WILL NOT usually allow insertion of newlines,
 924                  * because a newline is two characters long. Use it primarily to
 925                  * insert the " symbol.
 926                  *
 927                  * Note that this also involves a further check when parsing the line,
 928                  * which can be found below.
 929                  */
 930                 if ((ch == '\\') && (in_quote) && (in_tag))
 931                 {
 932                         line += ch;
 933                         log(DEBUG,"Escape sequence in config line.");
 934                         char real_character;
 935                         if (conf.get(real_character))
 936                         {
 937                                 log(DEBUG,"Escaping %c", real_character);
 938                                 line += real_character;
 939                                 continue;
 940                         }
 941                         else
 942                         {
 943                                 errorstream << "End of file after a \\, what did you want to escape?: " << filename << ":" << linenumber << std::endl;
 944                                 return false;
 945                         }
 946                 }
 947
 948                 line += ch;
 949
 950                 if(ch == '<')
 951                 {
 952                         if(in_tag)
 953                         {
 954                                 if(!in_quote)
 955                                 {
 956                                         errorstream << "Got another opening < when the first one wasn't closed: " << filename << ":" << linenumber << std::endl;
 957                                         return false;
 958                                 }
 959                         }
 960                         else
 961                         {
 962                                 if(in_quote)
 963                                 {
 964                                         errorstream << "We're in a quote but outside a tag, interesting. " << filename << ":" << linenumber << std::endl;
 965                                         return false;
 966                                 }
 967                                 else
 968                                 {
 969                                         // errorstream << "Opening new config tag on line " << linenumber << std::endl;
 970                                         in_tag = true;
 971                                 }
 972                         }
 973                 }
 974                 else if(ch == '"')
 975                 {
 976                         if(in_tag)
 977                         {
 978                                 if(in_quote)
 979                                 {
 980                                         // errorstream << "Closing quote in config tag on line " << linenumber << std::endl;
 981                                         in_quote = false;
 982                                 }
 983                                 else
 984                                 {
 985                                         // errorstream << "Opening quote in config tag on line " << linenumber << std::endl;
 986                                         in_quote = true;
 987                                 }
 988                         }
 989                         else
 990                         {
 991                                 if(in_quote)
 992                                 {
 993                                         errorstream << "Found a (closing) \" outside a tag: " << filename << ":" << linenumber << std::endl;
 994                                 }
 995                                 else
 996                                 {
 997                                         errorstream << "Found a (opening) \" outside a tag: " << filename << ":" << linenumber << std::endl;
 998                                 }
 999                         }
1000                 }
1001                 else if(ch == '>')
1002                 {
1003                         if(!in_quote)
1004                         {
1005                                 if(in_tag)
1006                                 {
1007                                         // errorstream << "Closing config tag on line " << linenumber << std::endl;
1008                                         in_tag = false;
1009
1010                                         /*
1011                                          * If this finds an <include> then ParseLine can simply call
1012                                          * LoadConf() and load the included config into the same ConfigDataHash
1013                                          */
1014
1015                                         if(!this->ParseLine(target, line, linenumber, errorstream))
1016                                                 return false;
1017
1018                                         line.clear();
1019                                 }
1020                                 else
1021                                 {
1022                                         errorstream << "Got a closing > when we weren't inside a tag: " << filename << ":" << linenumber << std::endl;
1023                                         return false;
1024                                 }
1025                         }
1026                 }
1027         }
1028
1029         return true;
1030 }
1031
1032 bool ServerConfig::LoadConf(ConfigDataHash &target, const std::string &filename, std::ostringstream &errorstream)
1033 {
1034         return this->LoadConf(target, filename.c_str(), errorstream);
1035 }
1036
1037 bool ServerConfig::ParseLine(ConfigDataHash &target, std::string &line, long linenumber, std::ostringstream &errorstream)
1038 {
1039         std::string tagname;
1040         std::string current_key;
1041         std::string current_value;
1042         KeyValList results;
1043         bool got_name;
1044         bool got_key;
1045         bool in_quote;
1046
1047         got_name = got_key = in_quote = false;
1048
1049         // std::cout << "ParseLine(data, '" << line << "', " << linenumber << ", stream)" << std::endl;
1050
1051         for(std::string::iterator c = line.begin(); c != line.end(); c++)
1052         {
1053                 if(!got_name)
1054                 {
1055                         /* We don't know the tag name yet. */
1056
1057                         if(*c != ' ')
1058                         {
1059                                 if(*c != '<')
1060                                 {
1061                                         tagname += *c;
1062                                 }
1063                         }
1064                         else
1065                         {
1066                                 /* We got to a space, we should have the tagname now. */
1067                                 if(tagname.length())
1068                                 {
1069                                         got_name = true;
1070                                 }
1071                         }
1072                 }
1073                 else
1074                 {
1075                         /* We have the tag name */
1076                         if (!got_key)
1077                         {
1078                                 /* We're still reading the key name */
1079                                 if (*c != '=')
1080                                 {
1081                                         if (*c != ' ')
1082                                         {
1083                                                 current_key += *c;
1084                                         }
1085                                 }
1086                                 else
1087                                 {
1088                                         /* We got an '=', end of the key name. */
1089                                         got_key = true;
1090                                 }
1091                         }
1092                         else
1093                         {
1094                                 /* We have the key name, now we're looking for quotes and the value */
1095
1096                                 /* Correctly handle escaped characters here.
1097                                  * See the XXX'ed section above.
1098                                  */
1099                                 if ((*c == '\\') && (in_quote))
1100                                 {
1101                                         c++;
1102                                         current_value += *c;
1103                                         continue;
1104                                 }
1105                                 if (*c == '"')
1106                                 {
1107                                         if (!in_quote)
1108                                         {
1109                                                 /* We're not already in a quote. */
1110                                                 in_quote = true;
1111                                         }
1112                                         else
1113                                         {
1114                                                 /* Leaving quotes, we have the value */
1115                                                 results.push_back(KeyVal(current_key, current_value));
1116
1117                                                 // std::cout << "<" << tagname << ":" << current_key << "> " << current_value << std::endl;
1118
1119                                                 in_quote = false;
1120                                                 got_key = false;
1121
1122                                                 if((tagname == "include") && (current_key == "file"))
1123                                                 {
1124                                                         if(!this->DoInclude(target, current_value, errorstream))
1125                                                                 return false;
1126                                                 }
1127
1128                                                 current_key.clear();
1129                                                 current_value.clear();
1130                                         }
1131                                 }
1132                                 else
1133                                 {
1134                                         if(in_quote)
1135                                         {
1136                                                 current_value += *c;
1137                                         }
1138                                 }
1139                         }
1140                 }
1141         }
1142
1143         /* Finished parsing the tag, add it to the config hash */
1144         target.insert(std::pair<std::string, KeyValList > (tagname, results));
1145
1146         return true;
1147 }
1148
1149 bool ServerConfig::DoInclude(ConfigDataHash &target, const std::string &file, std::ostringstream &errorstream)
1150 {
1151         std::string confpath;
1152         std::string newfile;
1153         std::string::size_type pos;
1154
1155         confpath = CONFIG_FILE;
1156         newfile = file;
1157
1158         for (std::string::iterator c = newfile.begin(); c != newfile.end(); c++)
1159         {
1160                 if (*c == '\\')
1161                 {
1162                         *c = '/';
1163                 }
1164         }
1165
1166         if (file[0] != '/')
1167         {
1168                 if((pos = confpath.find("/inspircd.conf")) != std::string::npos)
1169                 {
1170                         /* Leaves us with just the path */
1171                         newfile = confpath.substr(0, pos) + std::string("/") + newfile;
1172                 }
1173                 else
1174                 {
1175                         errorstream << "Couldn't get config path from: " << confpath << std::endl;
1176                         return false;
1177                 }
1178         }
1179
1180         return LoadConf(target, newfile, errorstream);
1181 }
1182
1183 bool ServerConfig::ConfValue(ConfigDataHash &target, const char* tag, const char* var, int index, char* result, int length)
1184 {
1185         std::string value;
1186         bool r = ConfValue(target, std::string(tag), std::string(var), index, value);
1187         strlcpy(result, value.c_str(), length);
1188         return r;
1189 }
1190
1191 bool ServerConfig::ConfValue(ConfigDataHash &target, const std::string &tag, const std::string &var, int index, std::string &result)
1192 {
1193         ConfigDataHash::size_type pos = index;
1194         if((pos >= 0) && (pos < target.count(tag)))
1195         {
1196                 ConfigDataHash::const_iterator iter = target.find(tag);
1197
1198                 for(int i = 0; i < index; i++)
1199                         iter++;
1200
1201                 for(KeyValList::const_iterator j = iter->second.begin(); j != iter->second.end(); j++)
1202                 {
1203                         if(j->first == var)
1204                         {
1205                                 result = j->second;
1206                                 return true;
1207                         }
1208                 }
1209         }
1210         else if(pos == 0)
1211         {
1212                 log(DEBUG, "No <%s> tags in config file.", tag.c_str());
1213         }
1214         else
1215         {
1216                 log(DEBUG, "ConfValue got an out-of-range index %d, there are only %d occurences of %s", pos, target.count(tag), tag.c_str());
1217         }
1218
1219         return false;
1220 }
1221
1222 bool ServerConfig::ConfValueInteger(ConfigDataHash &target, const char* tag, const char* var, int index, int &result)
1223 {
1224         return ConfValueInteger(target, std::string(tag), std::string(var), index, result);
1225 }
1226
1227 bool ServerConfig::ConfValueInteger(ConfigDataHash &target, const std::string &tag, const std::string &var, int index, int &result)
1228 {
1229         std::string value;
1230         std::istringstream stream;
1231         bool r = ConfValue(target, tag, var, index, value);
1232         stream.str(value);
1233         if(!(stream >> result))
1234                 return false;
1235         return r;
1236 }
1237
1238 bool ServerConfig::ConfValueBool(ConfigDataHash &target, const char* tag, const char* var, int index)
1239 {
1240         return ConfValueBool(target, std::string(tag), std::string(var), index);
1241 }
1242
1243 bool ServerConfig::ConfValueBool(ConfigDataHash &target, const std::string &tag, const std::string &var, int index)
1244 {
1245         std::string result;
1246         if(!ConfValue(target, tag, var, index, result))
1247                 return false;
1248
1249         return ((result == "yes") || (result == "true") || (result == "1"));
1250 }
1251
1252 int ServerConfig::ConfValueEnum(ConfigDataHash &target, const char* tag)
1253 {
1254         return target.count(tag);
1255 }
1256
1257 int ServerConfig::ConfValueEnum(ConfigDataHash &target, const std::string &tag)
1258 {
1259         return target.count(tag);
1260 }
1261
1262 int ServerConfig::ConfVarEnum(ConfigDataHash &target, const char* tag, int index)
1263 {
1264         return ConfVarEnum(target, std::string(tag), index);
1265 }
1266
1267 int ServerConfig::ConfVarEnum(ConfigDataHash &target, const std::string &tag, int index)
1268 {
1269         ConfigDataHash::size_type pos = index;
1270
1271         if((pos >= 0) && (pos < target.count(tag)))
1272         {
1273                 ConfigDataHash::const_iterator iter = target.find(tag);
1274
1275                 for(int i = 0; i < index; i++)
1276                         iter++;
1277
1278                 return iter->second.size();
1279         }
1280         else if(pos == 0)
1281         {
1282                 log(DEBUG, "No <%s> tags in config file.", tag.c_str());
1283         }
1284         else
1285         {
1286                 log(DEBUG, "ConfVarEnum got an out-of-range index %d, there are only %d occurences of %s", pos, target.count(tag), tag.c_str());
1287         }
1288
1289         return 0;
1290 }
1291
1292 /** Read the contents of a file located by `fname' into a file_cache pointed at by `F'.
1293  */
1294 bool ServerConfig::ReadFile(file_cache &F, const char* fname)
1295 {
1296         FILE* file;
1297         char linebuf[MAXBUF];
1298
1299         F.clear();
1300         file =  fopen(fname,"r");
1301
1302         if (file)
1303         {
1304                 while (!feof(file))
1305                 {
1306                         fgets(linebuf,sizeof(linebuf),file);
1307                         linebuf[strlen(linebuf)-1]='\0';
1308
1309                         if (!*linebuf)
1310                         {
1311                                 strcpy(linebuf," ");
1312                         }
1313
1314                         if (!feof(file))
1315                         {
1316                                 F.push_back(linebuf);
1317                         }
1318                 }
1319
1320                 fclose(file);
1321         }
1322         else
1323                 return false;
1324
1325         return true;
1326 }
1327