src/inspircd.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  Inspire is copyright (C) 2002-2005 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 /* Now with added unF! ;) */
  18
  19 using namespace std;
  20
  21 #include "inspircd_config.h"
  22 #include "inspircd.h"
  23 #include "inspircd_io.h"
  24 #include "inspircd_util.h"
  25 #include <unistd.h>
  26 #include <fcntl.h>
  27 #include <sys/errno.h>
  28 #include <sys/ioctl.h>
  29 #include <sys/utsname.h>
  30
  31 #ifdef USE_KQUEUE
  32 #include <sys/types.h>
  33 #include <sys/event.h>
  34 #include <sys/time.h>
  35 #endif
  36
  37 #ifdef USE_EPOLL
  38 #include <sys/epoll.h>
  39 #define EP_DELAY 5
  40 #endif
  41
  42 #include <time.h>
  43 #include <string>
  44 #ifdef GCC3
  45 #include <ext/hash_map>
  46 #else
  47 #include <hash_map>
  48 #endif
  49 #include <map>
  50 #include <sstream>
  51 #include <vector>
  52 #include <deque>
  53 #include <sched.h>
  54 #ifdef THREADED_DNS
  55 #include <pthread.h>
  56 #endif
  57 #include "users.h"
  58 #include "ctables.h"
  59 #include "globals.h"
  60 #include "modules.h"
  61 #include "dynamic.h"
  62 #include "wildcard.h"
  63 #include "message.h"
  64 #include "mode.h"
  65 #include "commands.h"
  66 #include "xline.h"
  67 #include "inspstring.h"
  68 #include "dnsqueue.h"
  69 #include "helperfuncs.h"
  70 #include "hashcomp.h"
  71 #include "socketengine.h"
  72 #include "socket.h"
  73 #include "dns.h"
  74
  75 int LogLevel = DEFAULT;
  76 char ServerName[MAXBUF];
  77 char Network[MAXBUF];
  78 char ServerDesc[MAXBUF];
  79 char AdminName[MAXBUF];
  80 char AdminEmail[MAXBUF];
  81 char AdminNick[MAXBUF];
  82 char diepass[MAXBUF];
  83 char restartpass[MAXBUF];
  84 char motd[MAXBUF];
  85 char rules[MAXBUF];
  86 char list[MAXBUF];
  87 char PrefixQuit[MAXBUF];
  88 char DieValue[MAXBUF];
  89 char DNSServer[MAXBUF];
  90 int debugging =  0;
  91 int WHOWAS_STALE = 48; // default WHOWAS Entries last 2 days before they go 'stale'
  92 int WHOWAS_MAX = 100;  // default 100 people maximum in the WHOWAS list
  93 int DieDelay  =  5;
  94 time_t startup_time = time(NULL);
  95 int NetBufferSize = 10240;      // NetBufferSize used as the buffer size for all read() ops
  96 int MaxConn = SOMAXCONN;        // size of accept() backlog (128 by default on *BSD)
  97 unsigned int SoftLimit = MAXCLIENTS;
  98 extern int MaxWhoResults;
  99 time_t nb_start = 0;
 100 int dns_timeout = 5;
 101
 102 char DisabledCommands[MAXBUF];
 103
 104 bool AllowHalfop = true;
 105 bool AllowProtect = true;
 106 bool AllowFounder = true;
 107
 108 extern std::vector<Module*> modules;
 109 std::vector<std::string> module_names;
 110 extern std::vector<ircd_module*> factory;
 111
 112 std::vector<InspSocket*> module_sockets;
 113
 114 extern int MODCOUNT;
 115 int openSockfd[MAXSOCKS];
 116 bool nofork = false;
 117 bool unlimitcore = false;
 118
 119 time_t TIME = time(NULL), OLDTIME = time(NULL);
 120
 121 #ifdef USE_KQUEUE
 122 int kq, lkq, skq;
 123 #endif
 124
 125 #ifdef USE_EPOLL
 126 int ep, lep, sep;
 127 #endif
 128
 129 bool has_been_netsplit = false;
 130 extern std::vector<std::string> include_stack;
 131
 132 typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, irc::StrHashComp> user_hash;
 133 typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, irc::StrHashComp> chan_hash;
 134 typedef nspace::hash_map<in_addr,string*, nspace::hash<in_addr>, irc::InAddr_HashComp> address_cache;
 135 typedef nspace::hash_map<std::string, WhoWasUser*, nspace::hash<string>, irc::StrHashComp> whowas_hash;
 136 typedef std::deque<command_t> command_table;
 137 typedef std::map<std::string,time_t> autoconnects;
 138 typedef std::vector<std::string> servernamelist;
 139
 140 // This table references users by file descriptor.
 141 // its an array to make it VERY fast, as all lookups are referenced
 142 // by an integer, meaning there is no need for a scan/search operation.
 143 userrec* fd_ref_table[65536];
 144
 145 int statsAccept = 0, statsRefused = 0, statsUnknown = 0, statsCollisions = 0, statsDns = 0, statsDnsGood = 0, statsDnsBad = 0, statsConnects = 0, statsSent= 0, statsRecv = 0;
 146
 147
 148
 149 FILE *log_file;
 150
 151 user_hash clientlist;
 152 chan_hash chanlist;
 153 whowas_hash whowas;
 154 command_table cmdlist;
 155 autoconnects autoconns;
 156 file_cache MOTD;
 157 file_cache RULES;
 158 address_cache IP;
 159
 160 ClassVector Classes;
 161 servernamelist servernames;
 162
 163 struct linger linger = { 0 };
 164 char MyExecutable[1024];
 165 int boundPortCount = 0;
 166 int portCount = 0, SERVERportCount = 0, ports[MAXSOCKS];
 167
 168 char ModPath[MAXBUF];
 169
 170 /* prototypes */
 171
 172 int has_channel(userrec *u, chanrec *c);
 173 int usercount(chanrec *c);
 174 int usercount_i(chanrec *c);
 175 char* Passwd(userrec *user);
 176 bool IsDenied(userrec *user);
 177 void AddWhoWas(userrec* u);
 178
 179 std::stringstream config_f(stringstream::in | stringstream::out);
 180
 181 std::vector<userrec*> all_opers;
 182
 183 char lowermap[255];
 184
 185 void AddOper(userrec* user)
 186 {
 187         log(DEBUG,"Oper added to optimization list");
 188         all_opers.push_back(user);
 189 }
 190
 191 void AddServerName(std::string servername)
 192 {
 193         log(DEBUG,"Adding server name: %s",servername.c_str());
 194         for (servernamelist::iterator a = servernames.begin(); a < servernames.end(); a++)
 195         {
 196                 if (*a == servername)
 197                         return;
 198         }
 199         servernames.push_back(servername);
 200 }
 201
 202 const char* FindServerNamePtr(std::string servername)
 203 {
 204         for (servernamelist::iterator a = servernames.begin(); a < servernames.end(); a++)
 205         {
 206                 if (*a == servername)
 207                         return a->c_str();
 208         }
 209         AddServerName(servername);
 210         return FindServerNamePtr(servername);
 211 }
 212
 213 void DeleteOper(userrec* user)
 214 {
 215         for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 216         {
 217                 if (*a == user)
 218                 {
 219                         log(DEBUG,"Oper removed from optimization list");
 220                         all_opers.erase(a);
 221                         return;
 222                 }
 223         }
 224 }
 225
 226 std::string GetRevision()
 227 {
 228         char Revision[] = "$Revision$";
 229         char *s1 = Revision;
 230         char *savept;
 231         char *v2 = strtok_r(s1," ",&savept);
 232         s1 = savept;
 233         v2 = strtok_r(s1," ",&savept);
 234         s1 = savept;
 235         return std::string(v2);
 236 }
 237
 238
 239 std::string getservername()
 240 {
 241         return ServerName;
 242 }
 243
 244 std::string getserverdesc()
 245 {
 246         return ServerDesc;
 247 }
 248
 249 std::string getnetworkname()
 250 {
 251         return Network;
 252 }
 253
 254 std::string getadminname()
 255 {
 256         return AdminName;
 257 }
 258
 259 std::string getadminemail()
 260 {
 261         return AdminEmail;
 262 }
 263
 264 std::string getadminnick()
 265 {
 266         return AdminNick;
 267 }
 268
 269 void ReadConfig(bool bail, userrec* user)
 270 {
 271         char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF],MW[MAXBUF],MCON[MAXBUF];
 272         char AH[MAXBUF],AP[MAXBUF],AF[MAXBUF],DNT[MAXBUF],pfreq[MAXBUF],thold[MAXBUF],sqmax[MAXBUF],rqmax[MAXBUF],SLIMT[MAXBUF];
 273         ConnectClass c;
 274         std::stringstream errstr;
 275         include_stack.clear();
 276
 277         if (!LoadConf(CONFIG_FILE,&config_f,&errstr))
 278         {
 279                 errstr.seekg(0);
 280                 log(DEFAULT,"There were errors in your configuration:\n%s",errstr.str().c_str());
 281                 if (bail)
 282                 {
 283                         printf("There were errors in your configuration:\n%s",errstr.str().c_str());
 284                         Exit(0);
 285                 }
 286                 else
 287                 {
 288                         char dataline[1024];
 289                         if (user)
 290                         {
 291                                 WriteServ(user->fd,"NOTICE %s :There were errors in the configuration file:",user->nick);
 292                                 while (!errstr.eof())
 293                                 {
 294                                         errstr.getline(dataline,1024);
 295                                         WriteServ(user->fd,"NOTICE %s :%s",user->nick,dataline);
 296                                 }
 297                         }
 298                         else
 299                         {
 300                                 WriteOpers("There were errors in the configuration file:");
 301                                 while (!errstr.eof())
 302                                 {
 303                                         errstr.getline(dataline,1024);
 304                                         WriteOpers(dataline);
 305                                 }
 306                         }
 307                         return;
 308                 }
 309         }
 310
 311         ConfValue("server","name",0,ServerName,&config_f);
 312         ConfValue("server","description",0,ServerDesc,&config_f);
 313         ConfValue("server","network",0,Network,&config_f);
 314         ConfValue("admin","name",0,AdminName,&config_f);
 315         ConfValue("admin","email",0,AdminEmail,&config_f);
 316         ConfValue("admin","nick",0,AdminNick,&config_f);
 317         ConfValue("files","motd",0,motd,&config_f);
 318         ConfValue("files","rules",0,rules,&config_f);
 319         ConfValue("power","diepass",0,diepass,&config_f);
 320         ConfValue("power","pause",0,pauseval,&config_f);
 321         ConfValue("power","restartpass",0,restartpass,&config_f);
 322         ConfValue("options","prefixquit",0,PrefixQuit,&config_f);
 323         ConfValue("die","value",0,DieValue,&config_f);
 324         ConfValue("options","loglevel",0,dbg,&config_f);
 325         ConfValue("options","netbuffersize",0,NB,&config_f);
 326         ConfValue("options","maxwho",0,MW,&config_f);
 327         ConfValue("options","allowhalfop",0,AH,&config_f);
 328         ConfValue("options","allowprotect",0,AP,&config_f);
 329         ConfValue("options","allowfounder",0,AF,&config_f);
 330         ConfValue("dns","server",0,DNSServer,&config_f);
 331         ConfValue("dns","timeout",0,DNT,&config_f);
 332         ConfValue("options","moduledir",0,ModPath,&config_f);
 333         ConfValue("disabled","commands",0,DisabledCommands,&config_f);
 334         ConfValue("options","somaxconn",0,MCON,&config_f);
 335         ConfValue("options","softlimit",0,SLIMT,&config_f);
 336
 337         SoftLimit = atoi(SLIMT);
 338         if ((SoftLimit < 1) || (SoftLimit > MAXCLIENTS))
 339         {
 340                 log(DEFAULT,"WARNING: <options:softlimit> value is greater than %d or less than 0, set to %d.",MAXCLIENTS,MAXCLIENTS);
 341                 SoftLimit = MAXCLIENTS;
 342         }
 343         MaxConn = atoi(MCON);
 344         if (MaxConn > SOMAXCONN)
 345                 log(DEFAULT,"WARNING: <options:somaxconn> value may be higher than the system-defined SOMAXCONN value!");
 346         NetBufferSize = atoi(NB);
 347         MaxWhoResults = atoi(MW);
 348         dns_timeout = atoi(DNT);
 349         if (!dns_timeout)
 350                 dns_timeout = 5;
 351         if (!MaxConn)
 352                 MaxConn = SOMAXCONN;
 353         if (!DNSServer[0])
 354                 strlcpy(DNSServer,"127.0.0.1",MAXBUF);
 355         if (!ModPath[0])
 356                 strlcpy(ModPath,MOD_PATH,MAXBUF);
 357         AllowHalfop = ((!strcasecmp(AH,"true")) || (!strcasecmp(AH,"1")) || (!strcasecmp(AH,"yes")));
 358         AllowProtect = ((!strcasecmp(AP,"true")) || (!strcasecmp(AP,"1")) || (!strcasecmp(AP,"yes")));
 359         AllowFounder = ((!strcasecmp(AF,"true")) || (!strcasecmp(AF,"1")) || (!strcasecmp(AF,"yes")));
 360         if ((!NetBufferSize) || (NetBufferSize > 65535) || (NetBufferSize < 1024))
 361         {
 362                 log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
 363                 NetBufferSize = 10240;
 364         }
 365         if ((!MaxWhoResults) || (MaxWhoResults > 65535) || (MaxWhoResults < 1))
 366         {
 367                 log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128.");
 368                 MaxWhoResults = 128;
 369         }
 370         if (!strcmp(dbg,"debug"))
 371                 LogLevel = DEBUG;
 372         if (!strcmp(dbg,"verbose"))
 373                 LogLevel = VERBOSE;
 374         if (!strcmp(dbg,"default"))
 375                 LogLevel = DEFAULT;
 376         if (!strcmp(dbg,"sparse"))
 377                 LogLevel = SPARSE;
 378         if (!strcmp(dbg,"none"))
 379                 LogLevel = NONE;
 380         readfile(MOTD,motd);
 381         log(DEFAULT,"Reading message of the day...");
 382         readfile(RULES,rules);
 383         log(DEFAULT,"Reading connect classes...");
 384         Classes.clear();
 385         for (int i = 0; i < ConfValueEnum("connect",&config_f); i++)
 386         {
 387                 strcpy(Value,"");
 388                 ConfValue("connect","allow",i,Value,&config_f);
 389                 ConfValue("connect","timeout",i,timeout,&config_f);
 390                 ConfValue("connect","flood",i,flood,&config_f);
 391                 ConfValue("connect","pingfreq",i,pfreq,&config_f);
 392                 ConfValue("connect","threshold",i,thold,&config_f);
 393                 ConfValue("connect","sendq",i,sqmax,&config_f);
 394                 ConfValue("connect","recvq",i,rqmax,&config_f);
 395                 if (Value[0])
 396                 {
 397                         strlcpy(c.host,Value,MAXBUF);
 398                         c.type = CC_ALLOW;
 399                         strlcpy(Value,"",MAXBUF);
 400                         ConfValue("connect","password",i,Value,&config_f);
 401                         strlcpy(c.pass,Value,MAXBUF);
 402                         c.registration_timeout = 90; // default is 2 minutes
 403                         c.pingtime = 120;
 404                         c.flood = atoi(flood);
 405                         c.threshold = 5;
 406                         c.sendqmax = 262144; // 256k
 407                         c.recvqmax = 4096;   // 4k
 408                         if (atoi(thold)>0)
 409                         {
 410                                 c.threshold = atoi(thold);
 411                         }
 412                         if (atoi(sqmax)>0)
 413                         {
 414                                 c.sendqmax = atoi(sqmax);
 415                         }
 416                         if (atoi(rqmax)>0)
 417                         {
 418                                 c.recvqmax = atoi(rqmax);
 419                         }
 420                         if (atoi(timeout)>0)
 421                         {
 422                                 c.registration_timeout = atoi(timeout);
 423                         }
 424                         if (atoi(pfreq)>0)
 425                         {
 426                                 c.pingtime = atoi(pfreq);
 427                         }
 428                         Classes.push_back(c);
 429                         log(DEBUG,"Read connect class type ALLOW, host=%s password=%s timeout=%lu flood=%lu",c.host,c.pass,(unsigned long)c.registration_timeout,(unsigned long)c.flood);
 430                 }
 431                 else
 432                 {
 433                         ConfValue("connect","deny",i,Value,&config_f);
 434                         strlcpy(c.host,Value,MAXBUF);
 435                         c.type = CC_DENY;
 436                         Classes.push_back(c);
 437                         log(DEBUG,"Read connect class type DENY, host=%s",c.host);
 438                 }
 439
 440         }
 441         log(DEFAULT,"Reading K lines,Q lines and Z lines from config...");
 442         read_xline_defaults();
 443         log(DEFAULT,"Applying K lines, Q lines and Z lines...");
 444         apply_lines();
 445
 446         autoconns.clear();
 447         for (int i = 0; i < ConfValueEnum("link",&config_f); i++)
 448         {
 449                 char Link_ServerName[MAXBUF],Link_AConn[MAXBUF];
 450                 ConfValue("link","name",i,Link_ServerName,&config_f);
 451                 ConfValue("link","autoconnect",i,Link_AConn,&config_f);
 452                 if (strcmp(Link_AConn,""))
 453                 {
 454                         autoconns[std::string(Link_ServerName)] = atoi(Link_AConn) + time(NULL);
 455                 }
 456         }
 457
 458
 459         log(DEFAULT,"Done reading configuration file, InspIRCd is now starting.");
 460         if (!bail)
 461         {
 462                 log(DEFAULT,"Adding and removing modules due to rehash...");
 463
 464                 std::vector<std::string> old_module_names, new_module_names, added_modules, removed_modules;
 465
 466                 // store the old module names
 467                 for (std::vector<std::string>::iterator t = module_names.begin(); t != module_names.end(); t++)
 468                 {
 469                         old_module_names.push_back(*t);
 470                 }
 471
 472                 // get the new module names
 473                 for (int count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
 474                 {
 475                         ConfValue("module","name",count2,Value,&config_f);
 476                         new_module_names.push_back(Value);
 477                 }
 478
 479                 // now create a list of new modules that are due to be loaded
 480                 // and a seperate list of modules which are due to be unloaded
 481                 for (std::vector<std::string>::iterator _new = new_module_names.begin(); _new != new_module_names.end(); _new++)
 482                 {
 483                         bool added = true;
 484                         for (std::vector<std::string>::iterator old = old_module_names.begin(); old != old_module_names.end(); old++)
 485                         {
 486                                 if (*old == *_new)
 487                                         added = false;
 488                         }
 489                         if (added)
 490                                 added_modules.push_back(*_new);
 491                 }
 492                 for (std::vector<std::string>::iterator oldm = old_module_names.begin(); oldm != old_module_names.end(); oldm++)
 493                 {
 494                         bool removed = true;
 495                         for (std::vector<std::string>::iterator newm = new_module_names.begin(); newm != new_module_names.end(); newm++)
 496                         {
 497                                 if (*newm == *oldm)
 498                                         removed = false;
 499                         }
 500                         if (removed)
 501                                 removed_modules.push_back(*oldm);
 502                 }
 503                 // now we have added_modules, a vector of modules to be loaded, and removed_modules, a vector of modules
 504                 // to be removed.
 505                 int rem = 0, add = 0;
 506                 if (!removed_modules.empty())
 507                 for (std::vector<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 508                 {
 509                         if (UnloadModule(removing->c_str()))
 510                         {
 511                                 WriteOpers("*** REHASH UNLOADED MODULE: %s",removing->c_str());
 512                                 WriteServ(user->fd,"973 %s %s :Module %s successfully unloaded.",user->nick, removing->c_str(), removing->c_str());
 513                                 rem++;
 514                         }
 515                         else
 516                         {
 517                                 WriteServ(user->fd,"972 %s %s :Failed to unload module %s: %s",user->nick, removing->c_str(), removing->c_str(), ModuleError());
 518                         }
 519                 }
 520                 if (!added_modules.empty())
 521                 for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 522                 {
 523                         if (LoadModule(adding->c_str()))
 524                         {
 525                                 WriteOpers("*** REHASH LOADED MODULE: %s",adding->c_str());
 526                                 WriteServ(user->fd,"975 %s %s :Module %s successfully loaded.",user->nick, adding->c_str(), adding->c_str());
 527                                 add++;
 528                         }
 529                         else
 530                         {
 531                                 WriteServ(user->fd,"974 %s %s :Failed to load module %s: %s",user->nick, adding->c_str(), adding->c_str(), ModuleError());
 532                         }
 533                 }
 534                 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());
 535         }
 536 }
 537
 538
 539 /* add a channel to a user, creating the record for it if needed and linking
 540  * it to the user record */
 541
 542 chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
 543 {
 544         if ((!user) || (!cn))
 545         {
 546                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
 547                 return 0;
 548         }
 549
 550         chanrec* Ptr;
 551         int created = 0;
 552         char cname[MAXBUF];
 553
 554         strncpy(cname,cn,MAXBUF);
 555
 556         // we MUST declare this wherever we use FOREACH_RESULT
 557         int MOD_RESULT = 0;
 558
 559         if (strlen(cname) > CHANMAX)
 560         {
 561                 cname[CHANMAX] = '\0';
 562         }
 563
 564         log(DEBUG,"add_channel: %s %s",user->nick,cname);
 565
 566         if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
 567         {
 568                 return NULL; // already on the channel!
 569         }
 570
 571
 572         if (!FindChan(cname))
 573         {
 574                 if (strcmp(ServerName,u->server))
 575                 {
 576                         MOD_RESULT = 0;
 577                         FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
 578                         if (MOD_RESULT == 1) {
 579                                 return NULL;
 580                         }
 581                 }
 582
 583                 /* create a new one */
 584                 log(DEBUG,"add_channel: creating: %s",cname);
 585                 {
 586                         chanlist[cname] = new chanrec();
 587
 588                         strlcpy(chanlist[cname]->name, cname,CHANMAX);
 589                         chanlist[cname]->binarymodes = CM_TOPICLOCK | CM_NOEXTERNAL;
 590                         chanlist[cname]->created = TIME;
 591                         strcpy(chanlist[cname]->topic, "");
 592                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
 593                         chanlist[cname]->topicset = 0;
 594                         Ptr = chanlist[cname];
 595                         log(DEBUG,"add_channel: created: %s",cname);
 596                         /* set created to 2 to indicate user
 597                          * is the first in the channel
 598                          * and should be given ops */
 599                         created = 2;
 600                 }
 601         }
 602         else
 603         {
 604                 /* channel exists, just fish out a pointer to its struct */
 605                 Ptr = FindChan(cname);
 606                 if (Ptr)
 607                 {
 608                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
 609
 610                         // remote users are allowed us to bypass channel modes
 611                         // and bans (used by servers)
 612                         if (!strcasecmp(ServerName,user->server))
 613                         {
 614                                 log(DEBUG,"Not overriding...");
 615                                 MOD_RESULT = 0;
 616                                 FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
 617                                 if (MOD_RESULT == 1) {
 618                                         return NULL;
 619                                 }
 620                                 log(DEBUG,"MOD_RESULT=%d",MOD_RESULT);
 621
 622                                 if (!MOD_RESULT)
 623                                 {
 624                                         log(DEBUG,"add_channel: checking key, invite, etc");
 625                                         MOD_RESULT = 0;
 626                                         FOREACH_RESULT(OnCheckKey(user, Ptr, key ? key : ""));
 627                                         if (MOD_RESULT == 0)
 628                                         {
 629                                                 if (Ptr->key[0])
 630                                                 {
 631                                                         log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
 632                                                         if (!key)
 633                                                         {
 634                                                                 log(DEBUG,"add_channel: no key given in JOIN");
 635                                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
 636                                                                 return NULL;
 637                                                         }
 638                                                         else
 639                                                         {
 640                                                                 if (strcasecmp(key,Ptr->key))
 641                                                                 {
 642                                                                         log(DEBUG,"add_channel: bad key given in JOIN");
 643                                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
 644                                                                         return NULL;
 645                                                                 }
 646                                                         }
 647                                                 }
 648                                                 log(DEBUG,"add_channel: no key");
 649                                         }
 650                                         MOD_RESULT = 0;
 651                                         FOREACH_RESULT(OnCheckInvite(user, Ptr));
 652                                         if (MOD_RESULT == 0)
 653                                         {
 654                                                 if (Ptr->binarymodes & CM_INVITEONLY)
 655                                                 {
 656                                                         log(DEBUG,"add_channel: channel is +i");
 657                                                         if (user->IsInvited(Ptr->name))
 658                                                         {
 659                                                                 /* user was invited to channel */
 660                                                                 /* there may be an optional channel NOTICE here */
 661                                                         }
 662                                                         else
 663                                                         {
 664                                                                 WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
 665                                                                 return NULL;
 666                                                         }
 667                                                 }
 668                                                 log(DEBUG,"add_channel: channel is not +i");
 669                                         }
 670                                         MOD_RESULT = 0;
 671                                         FOREACH_RESULT(OnCheckLimit(user, Ptr));
 672                                         if (MOD_RESULT == 0)
 673                                         {
 674                                                 if (Ptr->limit)
 675                                                 {
 676                                                         if (usercount(Ptr) >= Ptr->limit)
 677                                                         {
 678                                                                 WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
 679                                                                 return NULL;
 680                                                         }
 681                                                 }
 682                                         }
 683                                         log(DEBUG,"add_channel: about to walk banlist");
 684                                         MOD_RESULT = 0;
 685                                         FOREACH_RESULT(OnCheckBan(user, Ptr));
 686                                         if (MOD_RESULT == 0)
 687                                         {
 688                                                 /* check user against the channel banlist */
 689                                                 if (Ptr)
 690                                                 {
 691                                                         if (Ptr->bans.size())
 692                                                         {
 693                                                                 for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
 694                                                                 {
 695                                                                         if (match(user->GetFullHost(),i->data))
 696                                                                         {
 697                                                                                 WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
 698                                                                                 return NULL;
 699                                                                         }
 700                                                                 }
 701                                                         }
 702                                                 }
 703                                                 log(DEBUG,"add_channel: bans checked");
 704                                         }
 705
 706                                 }
 707
 708
 709                                 if ((Ptr) && (user))
 710                                 {
 711                                         user->RemoveInvite(Ptr->name);
 712                                 }
 713
 714                                 log(DEBUG,"add_channel: invites removed");
 715
 716                         }
 717                         else
 718                         {
 719                                 log(DEBUG,"Overridden checks");
 720                         }
 721
 722
 723                 }
 724                 created = 1;
 725         }
 726
 727         log(DEBUG,"Passed channel checks");
 728
 729         for (int index =0; index != MAXCHANS; index++)
 730         {
 731                 log(DEBUG,"Check location %d",index);
 732                 if (user->chans[index].channel == NULL)
 733                 {
 734                         log(DEBUG,"Adding into their channel list at location %d",index);
 735
 736                         if (created == 2)
 737                         {
 738                                 /* first user in is given ops */
 739                                 user->chans[index].uc_modes = UCMODE_OP;
 740                         }
 741                         else
 742                         {
 743                                 user->chans[index].uc_modes = 0;
 744                         }
 745                         user->chans[index].channel = Ptr;
 746                         Ptr->AddUser((char*)user);
 747                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
 748
 749                         log(DEBUG,"Sent JOIN to client");
 750
 751                         if (Ptr->topicset)
 752                         {
 753                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
 754                                 WriteServ(user->fd,"333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
 755                         }
 756                         userlist(user,Ptr);
 757                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
 758                         //WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
 759                         //WriteServ(user->fd,"329 %s %s %lu", user->nick, Ptr->name, (unsigned long)Ptr->created);
 760                         FOREACH_MOD OnUserJoin(user,Ptr);
 761                         return Ptr;
 762                 }
 763         }
 764         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
 765         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
 766         return NULL;
 767 }
 768
 769 /* remove a channel from a users record, and remove the record from memory
 770  * if the channel has become empty */
 771
 772 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
 773 {
 774         if ((!user) || (!cname))
 775         {
 776                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
 777                 return NULL;
 778         }
 779
 780         chanrec* Ptr;
 781
 782         if ((!cname) || (!user))
 783         {
 784                 return NULL;
 785         }
 786
 787         Ptr = FindChan(cname);
 788
 789         if (!Ptr)
 790         {
 791                 return NULL;
 792         }
 793
 794         FOREACH_MOD OnUserPart(user,Ptr);
 795         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
 796
 797         for (int i =0; i != MAXCHANS; i++)
 798         {
 799                 /* zap it from the channel list of the user */
 800                 if (user->chans[i].channel == Ptr)
 801                 {
 802                         if (reason)
 803                         {
 804                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
 805                         }
 806                         else
 807                         {
 808                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
 809                         }
 810                         user->chans[i].uc_modes = 0;
 811                         user->chans[i].channel = NULL;
 812                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
 813                         break;
 814                 }
 815         }
 816
 817         Ptr->DelUser((char*)user);
 818
 819         /* if there are no users left on the channel */
 820         if (!usercount(Ptr))
 821         {
 822                 chan_hash::iterator iter = chanlist.find(Ptr->name);
 823
 824                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
 825
 826                 /* kill the record */
 827                 if (iter != chanlist.end())
 828                 {
 829                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
 830                         delete Ptr;
 831                         chanlist.erase(iter);
 832                 }
 833         }
 834
 835         return NULL;
 836 }
 837
 838
 839 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
 840 {
 841         if ((!src) || (!user) || (!Ptr) || (!reason))
 842         {
 843                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
 844                 return;
 845         }
 846
 847         if ((!Ptr) || (!user) || (!src))
 848         {
 849                 return;
 850         }
 851
 852         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
 853
 854         if (!has_channel(user,Ptr))
 855         {
 856                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
 857                 return;
 858         }
 859
 860         int MOD_RESULT = 0;
 861         FOREACH_RESULT(OnAccessCheck(src,user,Ptr,AC_KICK));
 862         if (MOD_RESULT == ACR_DENY)
 863                 return;
 864
 865         if (MOD_RESULT == ACR_DEFAULT)
 866         {
 867                 if (((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) && (!is_uline(src->server)))
 868                 {
 869                         if (cstatus(src,Ptr) == STATUS_HOP)
 870                         {
 871                                 WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
 872                         }
 873                         else
 874                         {
 875                                 WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
 876                         }
 877
 878                         return;
 879                 }
 880         }
 881
 882         MOD_RESULT = 0;
 883         FOREACH_RESULT(OnUserPreKick(src,user,Ptr,reason));
 884         if (MOD_RESULT)
 885                 return;
 886
 887         FOREACH_MOD OnUserKick(src,user,Ptr,reason);
 888
 889         for (int i =0; i != MAXCHANS; i++)
 890         {
 891                 /* zap it from the channel list of the user */
 892                 if (user->chans[i].channel)
 893                 if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
 894                 {
 895                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
 896                         user->chans[i].uc_modes = 0;
 897                         user->chans[i].channel = NULL;
 898                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
 899                         break;
 900                 }
 901         }
 902
 903         Ptr->DelUser((char*)user);
 904
 905         /* if there are no users left on the channel */
 906         if (!usercount(Ptr))
 907         {
 908                 chan_hash::iterator iter = chanlist.find(Ptr->name);
 909
 910                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
 911
 912                 /* kill the record */
 913                 if (iter != chanlist.end())
 914                 {
 915                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
 916                         delete Ptr;
 917                         chanlist.erase(iter);
 918                 }
 919         }
 920 }
 921
 922
 923
 924
 925 /* This function pokes and hacks at a parameter list like the following:
 926  *
 927  * PART #winbot,#darkgalaxy :m00!
 928  *
 929  * to turn it into a series of individual calls like this:
 930  *
 931  * PART #winbot :m00!
 932  * PART #darkgalaxy :m00!
 933  *
 934  * The seperate calls are sent to a callback function provided by the caller
 935  * (the caller will usually call itself recursively). The callback function
 936  * must be a command handler. Calling this function on a line with no list causes
 937  * no action to be taken. You must provide a starting and ending parameter number
 938  * where the range of the list can be found, useful if you have a terminating
 939  * parameter as above which is actually not part of the list, or parameters
 940  * before the actual list as well. This code is used by many functions which
 941  * can function as "one to list" (see the RFC) */
 942
 943 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
 944 {
 945         char plist[MAXBUF];
 946         char *param;
 947         char *pars[32];
 948         char blog[32][MAXBUF];
 949         char blog2[32][MAXBUF];
 950         int j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
 951         char keystr[MAXBUF];
 952         char moo[MAXBUF];
 953
 954         for (int i = 0; i <32; i++)
 955                 strcpy(blog[i],"");
 956
 957         for (int i = 0; i <32; i++)
 958                 strcpy(blog2[i],"");
 959
 960         strcpy(moo,"");
 961         for (int i = 0; i <10; i++)
 962         {
 963                 if (!parameters[i])
 964                 {
 965                         parameters[i] = moo;
 966                 }
 967         }
 968         if (joins)
 969         {
 970                 if (pcnt > 1) /* we have a key to copy */
 971                 {
 972                         strlcpy(keystr,parameters[1],MAXBUF);
 973                 }
 974         }
 975
 976         if (!parameters[start])
 977         {
 978                 return 0;
 979         }
 980         if (!strchr(parameters[start],','))
 981         {
 982                 return 0;
 983         }
 984         strcpy(plist,"");
 985         for (int i = start; i <= end; i++)
 986         {
 987                 if (parameters[i])
 988                 {
 989                         strlcat(plist,parameters[i],MAXBUF);
 990                 }
 991         }
 992
 993         j = 0;
 994         param = plist;
 995
 996         t = strlen(plist);
 997         for (int i = 0; i < t; i++)
 998         {
 999                 if (plist[i] == ',')
1000                 {
1001                         plist[i] = '\0';
1002                         strlcpy(blog[j++],param,MAXBUF);
1003                         param = plist+i+1;
1004                         if (j>20)
1005                         {
1006                                 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
1007                                 return 1;
1008                         }
1009                 }
1010         }
1011         strlcpy(blog[j++],param,MAXBUF);
1012         total = j;
1013
1014         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
1015         {
1016                 strcat(keystr,",");
1017         }
1018
1019         if ((joins) && (keystr))
1020         {
1021                 if (strchr(keystr,','))
1022                 {
1023                         j = 0;
1024                         param = keystr;
1025                         t2 = strlen(keystr);
1026                         for (int i = 0; i < t2; i++)
1027                         {
1028                                 if (keystr[i] == ',')
1029                                 {
1030                                         keystr[i] = '\0';
1031                                         strlcpy(blog2[j++],param,MAXBUF);
1032                                         param = keystr+i+1;
1033                                 }
1034                         }
1035                         strlcpy(blog2[j++],param,MAXBUF);
1036                         total2 = j;
1037                 }
1038         }
1039
1040         for (j = 0; j < total; j++)
1041         {
1042                 if (blog[j])
1043                 {
1044                         pars[0] = blog[j];
1045                 }
1046                 for (q = end; q < pcnt-1; q++)
1047                 {
1048                         if (parameters[q+1])
1049                         {
1050                                 pars[q-end+1] = parameters[q+1];
1051                         }
1052                 }
1053                 if ((joins) && (parameters[1]))
1054                 {
1055                         if (pcnt > 1)
1056                         {
1057                                 pars[1] = blog2[j];
1058                         }
1059                         else
1060                         {
1061                                 pars[1] = NULL;
1062                         }
1063                 }
1064                 /* repeatedly call the function with the hacked parameter list */
1065                 if ((joins) && (pcnt > 1))
1066                 {
1067                         if (pars[1])
1068                         {
1069                                 // pars[1] already set up and containing key from blog2[j]
1070                                 fn(pars,2,u);
1071                         }
1072                         else
1073                         {
1074                                 pars[1] = parameters[1];
1075                                 fn(pars,2,u);
1076                         }
1077                 }
1078                 else
1079                 {
1080                         fn(pars,pcnt-(end-start),u);
1081                 }
1082         }
1083
1084         return 1;
1085 }
1086
1087
1088
1089 void kill_link(userrec *user,const char* r)
1090 {
1091         user_hash::iterator iter = clientlist.find(user->nick);
1092
1093         char reason[MAXBUF];
1094
1095         strncpy(reason,r,MAXBUF);
1096
1097         if (strlen(reason)>MAXQUIT)
1098         {
1099                 reason[MAXQUIT-1] = '\0';
1100         }
1101
1102         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
1103         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
1104         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
1105
1106         if (user->registered == 7) {
1107                 FOREACH_MOD OnUserQuit(user,reason);
1108                 WriteCommonExcept(user,"QUIT :%s",reason);
1109         }
1110
1111         user->FlushWriteBuf();
1112
1113         FOREACH_MOD OnUserDisconnect(user);
1114
1115         if (user->fd > -1)
1116         {
1117                 FOREACH_MOD OnRawSocketClose(user->fd);
1118                 engine_delete_fd;
1119                 user->CloseSocket();
1120         }
1121
1122         // this must come before the WriteOpers so that it doesnt try to fill their buffer with anything
1123         // if they were an oper with +s.
1124         if (user->registered == 7) {
1125                 purge_empty_chans(user);
1126                 // fix by brain: only show local quits because we only show local connects (it just makes SENSE)
1127                 if (!strcmp(user->server,ServerName))
1128                         WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
1129                 AddWhoWas(user);
1130         }
1131
1132         if (iter != clientlist.end())
1133         {
1134                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
1135                 if (user->fd > -1)
1136                         fd_ref_table[user->fd] = NULL;
1137                 clientlist.erase(iter);
1138         }
1139         delete user;
1140 }
1141
1142 void kill_link_silent(userrec *user,const char* r)
1143 {
1144         user_hash::iterator iter = clientlist.find(user->nick);
1145
1146         char reason[MAXBUF];
1147
1148         strncpy(reason,r,MAXBUF);
1149
1150         if (strlen(reason)>MAXQUIT)
1151         {
1152                 reason[MAXQUIT-1] = '\0';
1153         }
1154
1155         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
1156         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
1157         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
1158
1159         user->FlushWriteBuf();
1160
1161         if (user->registered == 7) {
1162                 FOREACH_MOD OnUserQuit(user,reason);
1163                 WriteCommonExcept(user,"QUIT :%s",reason);
1164         }
1165
1166         FOREACH_MOD OnUserDisconnect(user);
1167
1168         if (user->fd > -1)
1169         {
1170                 FOREACH_MOD OnRawSocketClose(user->fd);
1171                 engine_delete_fd;
1172                 user->CloseSocket();
1173         }
1174
1175         if (user->registered == 7) {
1176                 purge_empty_chans(user);
1177         }
1178
1179         if (iter != clientlist.end())
1180         {
1181                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
1182                 if (user->fd > -1)
1183                         fd_ref_table[user->fd] = NULL;
1184                 clientlist.erase(iter);
1185         }
1186         delete user;
1187 }
1188
1189
1190 /*void *task(void *arg)
1191 {
1192         for (;;) {
1193                 cout << (char *)arg;
1194                 cout.flush();
1195         }
1196         return NULL;
1197 }*/
1198
1199 int main(int argc, char** argv)
1200 {
1201         Start();
1202         srand(time(NULL));
1203         log(DEBUG,"*** InspIRCd starting up!");
1204         if (!FileExists(CONFIG_FILE))
1205         {
1206                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
1207                 log(DEFAULT,"main: no config");
1208                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
1209                 Exit(ERROR);
1210         }
1211         if (argc > 1) {
1212                 for (int i = 1; i < argc; i++)
1213                 {
1214                         if (!strcmp(argv[i],"-nofork")) {
1215                                 nofork = true;
1216                         }
1217                         if (!strcmp(argv[i],"-wait")) {
1218                                 sleep(6);
1219                         }
1220                         if (!strcmp(argv[i],"-nolimit")) {
1221                                 unlimitcore = true;
1222                         }
1223                 }
1224         }
1225
1226         strlcpy(MyExecutable,argv[0],MAXBUF);
1227
1228         // initialize the lowercase mapping table
1229         for (unsigned int cn = 0; cn < 256; cn++)
1230                 lowermap[cn] = cn;
1231         // lowercase the uppercase chars
1232         for (unsigned int cn = 65; cn < 91; cn++)
1233                 lowermap[cn] = tolower(cn);
1234         // now replace the specific chars for scandanavian comparison
1235         lowermap[(unsigned)'['] = '{';
1236         lowermap[(unsigned)']'] = '}';
1237         lowermap[(unsigned)'\\'] = '|';
1238
1239         if (InspIRCd(argv,argc) == ERROR)
1240         {
1241                 log(DEFAULT,"main: daemon function bailed");
1242                 printf("ERROR: could not initialise. Shutting down.\n");
1243                 Exit(ERROR);
1244         }
1245         Exit(TRUE);
1246         return 0;
1247 }
1248
1249 template<typename T> inline string ConvToStr(const T &in)
1250 {
1251         stringstream tmp;
1252         if (!(tmp << in)) return string();
1253         return tmp.str();
1254 }
1255
1256 /* re-allocates a nick in the user_hash after they change nicknames,
1257  * returns a pointer to the new user as it may have moved */
1258
1259 userrec* ReHashNick(char* Old, char* New)
1260 {
1261         //user_hash::iterator newnick;
1262         user_hash::iterator oldnick = clientlist.find(Old);
1263
1264         log(DEBUG,"ReHashNick: %s %s",Old,New);
1265
1266         if (!strcasecmp(Old,New))
1267         {
1268                 log(DEBUG,"old nick is new nick, skipping");
1269                 return oldnick->second;
1270         }
1271
1272         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
1273
1274         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
1275
1276         userrec* olduser = oldnick->second;
1277         clientlist[New] = olduser;
1278         clientlist.erase(oldnick);
1279
1280         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
1281
1282         return clientlist[New];
1283 }
1284
1285 /* adds or updates an entry in the whowas list */
1286 void AddWhoWas(userrec* u)
1287 {
1288         whowas_hash::iterator iter = whowas.find(u->nick);
1289         WhoWasUser *a = new WhoWasUser();
1290         strlcpy(a->nick,u->nick,NICKMAX);
1291         strlcpy(a->ident,u->ident,IDENTMAX);
1292         strlcpy(a->dhost,u->dhost,160);
1293         strlcpy(a->host,u->host,160);
1294         strlcpy(a->fullname,u->fullname,MAXGECOS);
1295         strlcpy(a->server,u->server,256);
1296         a->signon = u->signon;
1297
1298         /* MAX_WHOWAS:   max number of /WHOWAS items
1299          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
1300          *               can be replaced by a newer one
1301          */
1302
1303         if (iter == whowas.end())
1304         {
1305                 if (whowas.size() >= (unsigned)WHOWAS_MAX)
1306                 {
1307                         for (whowas_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
1308                         {
1309                                 // 3600 seconds in an hour ;)
1310                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
1311                                 {
1312                                         // delete the old one
1313                                         if (i->second) delete i->second;
1314                                         // replace with new one
1315                                         i->second = a;
1316                                         log(DEBUG,"added WHOWAS entry, purged an old record");
1317                                         return;
1318                                 }
1319                         }
1320                         // no space left and user doesnt exist. Don't leave ram in use!
1321                         log(DEBUG,"Not able to update whowas (list at WHOWAS_MAX entries and trying to add new?), freeing excess ram");
1322                         delete a;
1323                 }
1324                 else
1325                 {
1326                         log(DEBUG,"added fresh WHOWAS entry");
1327                         whowas[a->nick] = a;
1328                 }
1329         }
1330         else
1331         {
1332                 log(DEBUG,"updated WHOWAS entry");
1333                 if (iter->second) delete iter->second;
1334                 iter->second = a;
1335         }
1336 }
1337
1338 #ifdef THREADED_DNS
1339 void* dns_task(void* arg)
1340 {
1341         userrec* u = (userrec*)arg;
1342         log(DEBUG,"DNS thread for user %s",u->nick);
1343         DNS dns1;
1344         DNS dns2;
1345         std::string host;
1346         std::string ip;
1347         if (dns1.ReverseLookup(u->ip))
1348         {
1349                 log(DEBUG,"DNS Step 1");
1350                 while (!dns1.HasResult())
1351                 {
1352                         usleep(100);
1353                 }
1354                 host = dns1.GetResult();
1355                 if (host != "")
1356                 {
1357                         log(DEBUG,"DNS Step 2: '%s'",host.c_str());
1358                         if (dns2.ForwardLookup(host))
1359                         {
1360                                 while (!dns2.HasResult())
1361                                 {
1362                                         usleep(100);
1363                                 }
1364                                 ip = dns2.GetResultIP();
1365                                 log(DEBUG,"DNS Step 3 '%s'(%d) '%s'(%d)",ip.c_str(),ip.length(),u->ip,strlen(u->ip));
1366                                 if (ip == std::string(u->ip))
1367                                 {
1368                                         log(DEBUG,"DNS Step 4");
1369                                         if (host.length() < 160)
1370                                         {
1371                                                 log(DEBUG,"DNS Step 5");
1372                                                 strcpy(u->host,host.c_str());
1373                                                 strcpy(u->dhost,host.c_str());
1374                                         }
1375                                 }
1376                         }
1377                 }
1378         }
1379         u->dns_done = true;
1380         return NULL;
1381 }
1382 #endif
1383
1384 /* add a client connection to the sockets list */
1385 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
1386 {
1387         string tempnick;
1388         char tn2[MAXBUF];
1389         user_hash::iterator iter;
1390
1391         tempnick = ConvToStr(socket) + "-unknown";
1392         sprintf(tn2,"%lu-unknown",(unsigned long)socket);
1393
1394         iter = clientlist.find(tempnick);
1395
1396         // fix by brain.
1397         // as these nicknames are 'RFC impossible', we can be sure nobody is going to be
1398         // using one as a registered connection. As theyre per fd, we can also safely assume
1399         // that we wont have collisions. Therefore, if the nick exists in the list, its only
1400         // used by a dead socket, erase the iterator so that the new client may reclaim it.
1401         // this was probably the cause of 'server ignores me when i hammer it with reconnects'
1402         // issue in earlier alphas/betas
1403         if (iter != clientlist.end())
1404         {
1405                 userrec* goner = iter->second;
1406                 delete goner;
1407                 clientlist.erase(iter);
1408         }
1409
1410         /*
1411          * It is OK to access the value here this way since we know
1412          * it exists, we just created it above.
1413          *
1414          * At NO other time should you access a value in a map or a
1415          * hash_map this way.
1416          */
1417         clientlist[tempnick] = new userrec();
1418
1419         NonBlocking(socket);
1420         log(DEBUG,"AddClient: %lu %s %d %s",(unsigned long)socket,host,port,ip);
1421
1422         clientlist[tempnick]->fd = socket;
1423         strlcpy(clientlist[tempnick]->nick, tn2,NICKMAX);
1424         strlcpy(clientlist[tempnick]->host, host,160);
1425         strlcpy(clientlist[tempnick]->dhost, host,160);
1426         clientlist[tempnick]->server = (char*)FindServerNamePtr(ServerName);
1427         strlcpy(clientlist[tempnick]->ident, "unknown",IDENTMAX);
1428         clientlist[tempnick]->registered = 0;
1429         clientlist[tempnick]->signon = TIME+dns_timeout;
1430         clientlist[tempnick]->lastping = 1;
1431         clientlist[tempnick]->port = port;
1432         strlcpy(clientlist[tempnick]->ip,ip,16);
1433
1434         // set the registration timeout for this user
1435         unsigned long class_regtimeout = 90;
1436         int class_flood = 0;
1437         long class_threshold = 5;
1438         long class_sqmax = 262144;      // 256kb
1439         long class_rqmax = 4096;        // 4k
1440
1441         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
1442         {
1443                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
1444                 {
1445                         class_regtimeout = (unsigned long)i->registration_timeout;
1446                         class_flood = i->flood;
1447                         clientlist[tempnick]->pingmax = i->pingtime;
1448                         class_threshold = i->threshold;
1449                         class_sqmax = i->sendqmax;
1450                         class_rqmax = i->recvqmax;
1451                         break;
1452                 }
1453         }
1454
1455         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax+dns_timeout;
1456         clientlist[tempnick]->timeout = TIME+class_regtimeout;
1457         clientlist[tempnick]->flood = class_flood;
1458         clientlist[tempnick]->threshold = class_threshold;
1459         clientlist[tempnick]->sendqmax = class_sqmax;
1460         clientlist[tempnick]->recvqmax = class_rqmax;
1461
1462         for (int i = 0; i < MAXCHANS; i++)
1463         {
1464                 clientlist[tempnick]->chans[i].channel = NULL;
1465                 clientlist[tempnick]->chans[i].uc_modes = 0;
1466         }
1467
1468         if (clientlist.size() > SoftLimit)
1469         {
1470                 kill_link(clientlist[tempnick],"No more connections allowed");
1471                 return;
1472         }
1473
1474         if (clientlist.size() >= MAXCLIENTS)
1475         {
1476                 kill_link(clientlist[tempnick],"No more connections allowed");
1477                 return;
1478         }
1479
1480         // this is done as a safety check to keep the file descriptors within range of fd_ref_table.
1481         // its a pretty big but for the moment valid assumption:
1482         // file descriptors are handed out starting at 0, and are recycled as theyre freed.
1483         // therefore if there is ever an fd over 65535, 65536 clients must be connected to the
1484         // irc server at once (or the irc server otherwise initiating this many connections, files etc)
1485         // which for the time being is a physical impossibility (even the largest networks dont have more
1486         // than about 10,000 users on ONE server!)
1487         if ((unsigned)socket > 65534)
1488         {
1489                 kill_link(clientlist[tempnick],"Server is full");
1490                 return;
1491         }
1492
1493
1494         char* e = matches_exception(ip);
1495         if (!e)
1496         {
1497                 char* r = matches_zline(ip);
1498                 if (r)
1499                 {
1500                         char reason[MAXBUF];
1501                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
1502                         kill_link(clientlist[tempnick],reason);
1503                         return;
1504                 }
1505         }
1506         fd_ref_table[socket] = clientlist[tempnick];
1507         engine_add_fd;
1508
1509         // initialize their dns lookup thread
1510         //if (pthread_create(&clientlist[tempnick]->dnsthread, NULL, dns_task, (void *)clientlist[tempnick]) != 0)
1511         //{
1512         //      log(DEBUG,"Failed to create DNS lookup thread for user %s",clientlist[tempnick]->nick);
1513         //}
1514 }
1515
1516 /* shows the message of the day, and any other on-logon stuff */
1517 void FullConnectUser(userrec* user)
1518 {
1519         statsConnects++;
1520         user->idle_lastmsg = TIME;
1521         log(DEBUG,"ConnectUser: %s",user->nick);
1522
1523         if ((strcmp(Passwd(user),"")) && (!user->haspassed))
1524         {
1525                 kill_link(user,"Invalid password");
1526                 return;
1527         }
1528         if (IsDenied(user))
1529         {
1530                 kill_link(user,"Unauthorised connection");
1531                 return;
1532         }
1533
1534         char match_against[MAXBUF];
1535         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
1536         char* e = matches_exception(match_against);
1537         if (!e)
1538         {
1539                 char* r = matches_gline(match_against);
1540                 if (r)
1541                 {
1542                         char reason[MAXBUF];
1543                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
1544                         kill_link_silent(user,reason);
1545                         return;
1546                 }
1547                 r = matches_kline(user->host);
1548                 if (r)
1549                 {
1550                         char reason[MAXBUF];
1551                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
1552                         kill_link_silent(user,reason);
1553                         return;
1554                 }
1555         }
1556
1557         // fix by brain: move this below the xline checks to prevent spurious quits going onto the net that dont belong
1558         user->registered = 7;
1559
1560         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
1561         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
1562         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
1563         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
1564         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
1565         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
1566         std::stringstream v;
1567         v << "WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
1568         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
1569         v << " TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=20 AWAYLEN=" << MAXAWAY << " CHANMODES=ohvb,k,l,psmnti NETWORK=";
1570         v << Network;
1571         std::string data005 = v.str();
1572         FOREACH_MOD On005Numeric(data005);
1573         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
1574         // so i'd better split it :)
1575         std::stringstream out(data005);
1576         std::string token = "";
1577         std::string line5 = "";
1578         int token_counter = 0;
1579         while (!out.eof())
1580         {
1581                 out >> token;
1582                 line5 = line5 + token + " ";
1583                 token_counter++;
1584                 if ((token_counter >= 13) || (out.eof() == true))
1585                 {
1586                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
1587                         line5 = "";
1588                         token_counter = 0;
1589                 }
1590         }
1591         ShowMOTD(user);
1592
1593         // fix by brain: these should be AFTER the N token, so other servers know what the HELL we're on about... :)
1594         FOREACH_MOD OnUserConnect(user);
1595         FOREACH_MOD OnGlobalConnect(user);
1596         WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,user->ip);
1597 }
1598
1599
1600 /* shows the message of the day, and any other on-logon stuff */
1601 void ConnectUser(userrec *user)
1602 {
1603         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
1604         if ((user->dns_done) && (user->registered >= 3) && (AllModulesReportReady(user)))
1605         {
1606                 FullConnectUser(user);
1607         }
1608 }
1609
1610 std::string GetVersionString()
1611 {
1612         char Revision[] = "$Revision$";
1613         char versiondata[MAXBUF];
1614         char *s1 = Revision;
1615         char *savept;
1616         char *v2 = strtok_r(s1," ",&savept);
1617         s1 = savept;
1618         v2 = strtok_r(s1," ",&savept);
1619         s1 = savept;
1620         char socketengine[] = engine_name;
1621 #ifdef THREADED_DNS
1622         char dnsengine[] = "multithread";
1623 #else
1624         char dnsengine[] = "singlethread";
1625 #endif
1626         snprintf(versiondata,MAXBUF,"%s Rev. %s %s :%s [FLAGS=%lu,%s,%s]",VERSION,v2,ServerName,SYSTEM,(unsigned long)OPTIMISATION,socketengine,dnsengine);
1627         return versiondata;
1628 }
1629
1630 void handle_version(char **parameters, int pcnt, userrec *user)
1631 {
1632         WriteServ(user->fd,"351 %s :%s",user->nick,GetVersionString().c_str());
1633 }
1634
1635
1636 bool is_valid_cmd(const char* commandname, int pcnt, userrec * user)
1637 {
1638         for (unsigned int i = 0; i < cmdlist.size(); i++)
1639         {
1640                 if (!strcasecmp(cmdlist[i].command,commandname))
1641                 {
1642                         if (cmdlist[i].handler_function)
1643                         {
1644                                 if ((pcnt>=cmdlist[i].min_params) && (strcasecmp(cmdlist[i].source,"<core>")))
1645                                 {
1646                                         if ((strchr(user->modes,cmdlist[i].flags_needed)) || (!cmdlist[i].flags_needed))
1647                                         {
1648                                                 if (cmdlist[i].flags_needed)
1649                                                 {
1650                                                         if ((user->HasPermission((char*)commandname)) || (is_uline(user->server)))
1651                                                         {
1652                                                                 return true;
1653                                                         }
1654                                                         else
1655                                                         {
1656                                                                 return false;
1657                                                         }
1658                                                 }
1659                                                 return true;
1660                                         }
1661                                 }
1662                         }
1663                 }
1664         }
1665         return false;
1666 }
1667
1668 // calls a handler function for a command
1669
1670 void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
1671 {
1672         for (unsigned int i = 0; i < cmdlist.size(); i++)
1673         {
1674                 if (!strcasecmp(cmdlist[i].command,commandname))
1675                 {
1676                         if (cmdlist[i].handler_function)
1677                         {
1678                                 if (pcnt>=cmdlist[i].min_params)
1679                                 {
1680                                         if ((strchr(user->modes,cmdlist[i].flags_needed)) || (!cmdlist[i].flags_needed))
1681                                         {
1682                                                 if (cmdlist[i].flags_needed)
1683                                                 {
1684                                                         if ((user->HasPermission((char*)commandname)) || (is_uline(user->server)))
1685                                                         {
1686                                                                 cmdlist[i].handler_function(parameters,pcnt,user);
1687                                                         }
1688                                                 }
1689                                                 else
1690                                                 {
1691                                                         cmdlist[i].handler_function(parameters,pcnt,user);
1692                                                 }
1693                                         }
1694                                 }
1695                         }
1696                 }
1697         }
1698 }
1699
1700
1701 void force_nickchange(userrec* user,const char* newnick)
1702 {
1703         char nick[MAXBUF];
1704         int MOD_RESULT = 0;
1705
1706         strcpy(nick,"");
1707
1708         FOREACH_RESULT(OnUserPreNick(user,newnick));
1709         if (MOD_RESULT) {
1710                 statsCollisions++;
1711                 kill_link(user,"Nickname collision");
1712                 return;
1713         }
1714         if (matches_qline(newnick))
1715         {
1716                 statsCollisions++;
1717                 kill_link(user,"Nickname collision");
1718                 return;
1719         }
1720
1721         if (user)
1722         {
1723                 if (newnick)
1724                 {
1725                         strncpy(nick,newnick,MAXBUF);
1726                 }
1727                 if (user->registered == 7)
1728                 {
1729                         char* pars[1];
1730                         pars[0] = nick;
1731                         handle_nick(pars,1,user);
1732                 }
1733         }
1734 }
1735
1736
1737 int process_parameters(char **command_p,char *parameters)
1738 {
1739         int j = 0;
1740         int q = strlen(parameters);
1741         if (!q)
1742         {
1743                 /* no parameters, command_p invalid! */
1744                 return 0;
1745         }
1746         if (parameters[0] == ':')
1747         {
1748                 command_p[0] = parameters+1;
1749                 return 1;
1750         }
1751         if (q)
1752         {
1753                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
1754                 {
1755                         /* only one parameter */
1756                         command_p[0] = parameters;
1757                         if (parameters[0] == ':')
1758                         {
1759                                 if (strchr(parameters,' ') != NULL)
1760                                 {
1761                                         command_p[0]++;
1762                                 }
1763                         }
1764                         return 1;
1765                 }
1766         }
1767         command_p[j++] = parameters;
1768         for (int i = 0; i <= q; i++)
1769         {
1770                 if (parameters[i] == ' ')
1771                 {
1772                         command_p[j++] = parameters+i+1;
1773                         parameters[i] = '\0';
1774                         if (command_p[j-1][0] == ':')
1775                         {
1776                                 *command_p[j-1]++; /* remove dodgy ":" */
1777                                 break;
1778                                 /* parameter like this marks end of the sequence */
1779                         }
1780                 }
1781         }
1782         return j; /* returns total number of items in the list */
1783 }
1784
1785 void process_command(userrec *user, char* cmd)
1786 {
1787         char *parameters;
1788         char *command;
1789         char *command_p[127];
1790         char p[MAXBUF], temp[MAXBUF];
1791         int j, items, cmd_found;
1792
1793         for (int i = 0; i < 127; i++)
1794                 command_p[i] = NULL;
1795
1796         if (!user)
1797         {
1798                 return;
1799         }
1800         if (!cmd)
1801         {
1802                 return;
1803         }
1804         if (!cmd[0])
1805         {
1806                 return;
1807         }
1808
1809         int total_params = 0;
1810         if (strlen(cmd)>2)
1811         {
1812                 for (unsigned int q = 0; q < strlen(cmd)-1; q++)
1813                 {
1814                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
1815                         {
1816                                 total_params++;
1817                                 // found a 'trailing', we dont count them after this.
1818                                 break;
1819                         }
1820                         if (cmd[q] == ' ')
1821                                 total_params++;
1822                 }
1823         }
1824
1825         // another phidjit bug...
1826         if (total_params > 126)
1827         {
1828                 *(strchr(cmd,' ')) = '\0';
1829                 WriteServ(user->fd,"421 %s %s :Too many parameters given",user->nick,cmd);
1830                 return;
1831         }
1832
1833         strlcpy(temp,cmd,MAXBUF);
1834
1835         std::string tmp = cmd;
1836         for (int i = 0; i <= MODCOUNT; i++)
1837         {
1838                 std::string oldtmp = tmp;
1839                 modules[i]->OnServerRaw(tmp,true,user);
1840                 if (oldtmp != tmp)
1841                 {
1842                         log(DEBUG,"A Module changed the input string!");
1843                         log(DEBUG,"New string: %s",tmp.c_str());
1844                         log(DEBUG,"Old string: %s",oldtmp.c_str());
1845                         break;
1846                 }
1847         }
1848         strlcpy(cmd,tmp.c_str(),MAXBUF);
1849         strlcpy(temp,cmd,MAXBUF);
1850
1851         if (!strchr(cmd,' '))
1852         {
1853                 /* no parameters, lets skip the formalities and not chop up
1854                  * the string */
1855                 log(DEBUG,"About to preprocess command with no params");
1856                 items = 0;
1857                 command_p[0] = NULL;
1858                 parameters = NULL;
1859                 for (unsigned int i = 0; i <= strlen(cmd); i++)
1860                 {
1861                         cmd[i] = toupper(cmd[i]);
1862                 }
1863                 command = cmd;
1864         }
1865         else
1866         {
1867                 strcpy(cmd,"");
1868                 j = 0;
1869                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
1870                 for (unsigned int i = 0; i < strlen(temp); i++)
1871                 {
1872                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
1873                         {
1874                                 cmd[j++] = temp[i];
1875                                 cmd[j] = 0;
1876                         }
1877                 }
1878                 /* split the full string into a command plus parameters */
1879                 parameters = p;
1880                 strcpy(p," ");
1881                 command = cmd;
1882                 if (strchr(cmd,' '))
1883                 {
1884                         for (unsigned int i = 0; i <= strlen(cmd); i++)
1885                         {
1886                                 /* capitalise the command ONLY, leave params intact */
1887                                 cmd[i] = toupper(cmd[i]);
1888                                 /* are we nearly there yet?! :P */
1889                                 if (cmd[i] == ' ')
1890                                 {
1891                                         command = cmd;
1892                                         parameters = cmd+i+1;
1893                                         cmd[i] = '\0';
1894                                         break;
1895                                 }
1896                         }
1897                 }
1898                 else
1899                 {
1900                         for (unsigned int i = 0; i <= strlen(cmd); i++)
1901                         {
1902                                 cmd[i] = toupper(cmd[i]);
1903                         }
1904                 }
1905
1906         }
1907         cmd_found = 0;
1908
1909         if (strlen(command)>MAXCOMMAND)
1910         {
1911                 WriteServ(user->fd,"421 %s %s :Command too long",user->nick,command);
1912                 return;
1913         }
1914
1915         for (unsigned int x = 0; x < strlen(command); x++)
1916         {
1917                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
1918                 {
1919                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
1920                         {
1921                                 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
1922                                 {
1923                                         statsUnknown++;
1924                                         WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
1925                                         return;
1926                                 }
1927                         }
1928                 }
1929         }
1930
1931         for (unsigned int i = 0; i != cmdlist.size(); i++)
1932         {
1933                 if (cmdlist[i].command[0])
1934                 {
1935                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
1936                         {
1937                                 if (parameters)
1938                                 {
1939                                         if (parameters[0])
1940                                         {
1941                                                 items = process_parameters(command_p,parameters);
1942                                         }
1943                                         else
1944                                         {
1945                                                 items = 0;
1946                                                 command_p[0] = NULL;
1947                                         }
1948                                 }
1949                                 else
1950                                 {
1951                                         items = 0;
1952                                         command_p[0] = NULL;
1953                                 }
1954
1955                                 if (user)
1956                                 {
1957                                         /* activity resets the ping pending timer */
1958                                         user->nping = TIME + user->pingmax;
1959                                         if ((items) < cmdlist[i].min_params)
1960                                         {
1961                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
1962                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
1963                                                 return;
1964                                         }
1965                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
1966                                         {
1967                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
1968                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
1969                                                 cmd_found = 1;
1970                                                 return;
1971                                         }
1972                                         if ((cmdlist[i].flags_needed) && (!user->HasPermission(command)))
1973                                         {
1974                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
1975                                                 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
1976                                                 cmd_found = 1;
1977                                                 return;
1978                                         }
1979                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
1980                                          * deny command! */
1981                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
1982                                         {
1983                                                 if ((!isnick(user->nick)) || (user->registered != 7))
1984                                                 {
1985                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
1986                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
1987                                                         return;
1988                                                 }
1989                                         }
1990                                         if ((user->registered == 7) && (!strchr(user->modes,'o')))
1991                                         {
1992                                                 std::stringstream dcmds(DisabledCommands);
1993                                                 while (!dcmds.eof())
1994                                                 {
1995                                                         std::string thiscmd;
1996                                                         dcmds >> thiscmd;
1997                                                         if (!strcasecmp(thiscmd.c_str(),command))
1998                                                         {
1999                                                                 // command is disabled!
2000                                                                 WriteServ(user->fd,"421 %s %s :This command has been disabled.",user->nick,command);
2001                                                                 return;
2002                                                         }
2003                                                 }
2004                                         }
2005                                         if ((user->registered == 7) || (!strncmp(command,"USER",4)) || (!strncmp(command,"NICK",4)) || (!strncmp(command,"PASS",4)))
2006                                         {
2007                                                 if (cmdlist[i].handler_function)
2008                                                 {
2009
2010                                                         /* ikky /stats counters */
2011                                                         if (temp)
2012                                                         {
2013                                                                 cmdlist[i].use_count++;
2014                                                                 cmdlist[i].total_bytes+=strlen(temp);
2015                                                         }
2016
2017                                                         int MOD_RESULT = 0;
2018                                                         FOREACH_RESULT(OnPreCommand(command,command_p,items,user));
2019                                                         if (MOD_RESULT == 1) {
2020                                                                 return;
2021                                                         }
2022
2023                                                         /* WARNING: nothing may come after the
2024                                                          * command handler call, as the handler
2025                                                          * may free the user structure! */
2026
2027                                                         cmdlist[i].handler_function(command_p,items,user);
2028                                                 }
2029                                                 return;
2030                                         }
2031                                         else
2032                                         {
2033                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
2034                                                 return;
2035                                         }
2036                                 }
2037                                 cmd_found = 1;
2038                         }
2039                 }
2040         }
2041         if ((!cmd_found) && (user))
2042         {
2043                 statsUnknown++;
2044                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
2045         }
2046 }
2047
2048 bool removecommands(const char* source)
2049 {
2050         bool go_again = true;
2051         while (go_again)
2052         {
2053                 go_again = false;
2054                 for (std::deque<command_t>::iterator i = cmdlist.begin(); i != cmdlist.end(); i++)
2055                 {
2056                         if (!strcmp(i->source,source))
2057                         {
2058                                 log(DEBUG,"removecommands(%s) Removing dependent command: %s",i->source,i->command);
2059                                 cmdlist.erase(i);
2060                                 go_again = true;
2061                                 break;
2062                         }
2063                 }
2064         }
2065         return true;
2066 }
2067
2068
2069 void process_buffer(const char* cmdbuf,userrec *user)
2070 {
2071         if (!user)
2072         {
2073                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
2074                 return;
2075         }
2076         char cmd[MAXBUF];
2077         if (!cmdbuf)
2078         {
2079                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
2080                 return;
2081         }
2082         if (!cmdbuf[0])
2083         {
2084                 return;
2085         }
2086         while (*cmdbuf == ' ') cmdbuf++; // strip leading spaces
2087
2088         strlcpy(cmd,cmdbuf,MAXBUF);
2089         if (!cmd[0])
2090         {
2091                 return;
2092         }
2093         int sl = strlen(cmd)-1;
2094         if ((cmd[sl] == 13) || (cmd[sl] == 10))
2095         {
2096                 cmd[sl] = '\0';
2097         }
2098         sl = strlen(cmd)-1;
2099         if ((cmd[sl] == 13) || (cmd[sl] == 10))
2100         {
2101                 cmd[sl] = '\0';
2102         }
2103         sl = strlen(cmd)-1;
2104         while (cmd[sl] == ' ') // strip trailing spaces
2105         {
2106                 cmd[sl] = '\0';
2107                 sl = strlen(cmd)-1;
2108         }
2109
2110         if (!cmd[0])
2111         {
2112                 return;
2113         }
2114         log(DEBUG,"CMDIN: %s %s",user->nick,cmd);
2115         tidystring(cmd);
2116         if ((user) && (cmd))
2117         {
2118                 process_command(user,cmd);
2119         }
2120 }
2121
2122 char MODERR[MAXBUF];
2123
2124 char* ModuleError()
2125 {
2126         return MODERR;
2127 }
2128
2129 void erase_factory(int j)
2130 {
2131         int v = 0;
2132         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
2133         {
2134                 if (v == j)
2135                 {
2136                         factory.erase(t);
2137                         factory.push_back(NULL);
2138                         return;
2139                 }
2140                 v++;
2141         }
2142 }
2143
2144 void erase_module(int j)
2145 {
2146         int v1 = 0;
2147         for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
2148         {
2149                 if (v1 == j)
2150                 {
2151                         delete *m;
2152                         modules.erase(m);
2153                         modules.push_back(NULL);
2154                         break;
2155                 }
2156                 v1++;
2157         }
2158         int v2 = 0;
2159         for (std::vector<std::string>::iterator v = module_names.begin(); v != module_names.end(); v++)
2160         {
2161                 if (v2 == j)
2162                 {
2163                        module_names.erase(v);
2164                        break;
2165                 }
2166                 v2++;
2167         }
2168
2169 }
2170
2171 bool UnloadModule(const char* filename)
2172 {
2173         std::string filename_str = filename;
2174         for (unsigned int j = 0; j != module_names.size(); j++)
2175         {
2176                 if (module_names[j] == filename_str)
2177                 {
2178                         if (modules[j]->GetVersion().Flags & VF_STATIC)
2179                         {
2180                                 log(DEFAULT,"Failed to unload STATIC module %s",filename);
2181                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
2182                                 return false;
2183                         }
2184                         FOREACH_MOD OnUnloadModule(modules[j],module_names[j]);
2185                         // found the module
2186                         log(DEBUG,"Deleting module...");
2187                         erase_module(j);
2188                         log(DEBUG,"Erasing module entry...");
2189                         erase_factory(j);
2190                         log(DEBUG,"Removing dependent commands...");
2191                         removecommands(filename);
2192                         log(DEFAULT,"Module %s unloaded",filename);
2193                         MODCOUNT--;
2194                         return true;
2195                 }
2196         }
2197         log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
2198         snprintf(MODERR,MAXBUF,"Module not loaded");
2199         return false;
2200 }
2201
2202 bool LoadModule(const char* filename)
2203 {
2204         char modfile[MAXBUF];
2205 #ifdef STATIC_LINK
2206         snprintf(modfile,MAXBUF,"%s",filename);
2207 #else
2208         snprintf(modfile,MAXBUF,"%s/%s",ModPath,filename);
2209 #endif
2210         std::string filename_str = filename;
2211 #ifndef STATIC_LINK
2212         if (!DirValid(modfile))
2213         {
2214                 log(DEFAULT,"Module %s is not within the modules directory.",modfile);
2215                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
2216                 return false;
2217         }
2218 #endif
2219         log(DEBUG,"Loading module: %s",modfile);
2220 #ifndef STATIC_LINK
2221         if (FileExists(modfile))
2222         {
2223 #endif
2224                 for (unsigned int j = 0; j < module_names.size(); j++)
2225                 {
2226                         if (module_names[j] == filename_str)
2227                         {
2228                                 log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
2229                                 snprintf(MODERR,MAXBUF,"Module already loaded");
2230                                 return false;
2231                         }
2232                 }
2233                 ircd_module* a = new ircd_module(modfile);
2234                 factory[MODCOUNT+1] = a;
2235                 if (factory[MODCOUNT+1]->LastError())
2236                 {
2237                         log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
2238                         snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
2239                         MODCOUNT--;
2240                         return false;
2241                 }
2242                 if (factory[MODCOUNT+1]->factory)
2243                 {
2244                         Module* m = factory[MODCOUNT+1]->factory->CreateModule();
2245                         modules[MODCOUNT+1] = m;
2246                         /* save the module and the module's classfactory, if
2247                          * this isnt done, random crashes can occur :/ */
2248                         module_names.push_back(filename);
2249                 }
2250                 else
2251                 {
2252                         log(DEFAULT,"Unable to load %s",modfile);
2253                         snprintf(MODERR,MAXBUF,"Factory function failed!");
2254                         return false;
2255                 }
2256 #ifndef STATIC_LINK
2257         }
2258         else
2259         {
2260                 log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
2261                 snprintf(MODERR,MAXBUF,"Module file could not be found");
2262                 return false;
2263         }
2264 #endif
2265         MODCOUNT++;
2266         FOREACH_MOD OnLoadModule(modules[MODCOUNT],filename_str);
2267         return true;
2268 }
2269
2270
2271 int InspIRCd(char** argv, int argc)
2272 {
2273         struct sockaddr_in client,server;
2274         char addrs[MAXBUF][255];
2275         int incomingSockfd, result = TRUE;
2276         socklen_t length;
2277         int count = 0;
2278 #ifdef USE_SELECT
2279         int selectResult = 0, selectResult2 = 0;
2280         fd_set selectFds;
2281 #endif
2282         char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
2283         timeval tv;
2284
2285         std::string logpath = GetFullProgDir(argv,argc) + "/ircd.log";
2286         log_file = fopen(logpath.c_str(),"a+");
2287         if (!log_file)
2288         {
2289                 printf("ERROR: Could not write to logfile %s, bailing!\n\n",logpath.c_str());
2290                 Exit(ERROR);
2291         }
2292
2293 #ifdef IS_CYGWIN
2294         printf("Logging to ircd.log...\n");
2295 #else
2296         printf("Logging to %s...\n",logpath.c_str());
2297 #endif
2298
2299         log(DEFAULT,"$Id$");
2300         if (geteuid() == 0)
2301         {
2302                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
2303                 Exit(ERROR);
2304                 log(DEFAULT,"InspIRCd: startup: not starting with UID 0!");
2305         }
2306         SetupCommandTable();
2307         log(DEBUG,"InspIRCd: startup: default command table set up");
2308
2309         ReadConfig(true,NULL);
2310         if (DieValue[0])
2311         {
2312                 printf("WARNING: %s\n\n",DieValue);
2313                 log(DEFAULT,"Ut-Oh, somebody didn't read their config file: '%s'",DieValue);
2314                 exit(0);
2315         }
2316         log(DEBUG,"InspIRCd: startup: read config");
2317
2318         AddServerName(ServerName);
2319
2320         int clientportcount = 0;
2321
2322         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
2323         {
2324                 ConfValue("bind","port",count,configToken,&config_f);
2325                 ConfValue("bind","address",count,Addr,&config_f);
2326                 ConfValue("bind","type",count,Type,&config_f);
2327                 if (!strcmp(Type,"servers"))
2328                 {
2329                         // modules handle this bind type now.
2330                 }
2331                 else
2332                 {
2333                         ports[clientportcount] = atoi(configToken);
2334                         strlcpy(addrs[clientportcount],Addr,256);
2335                         clientportcount++;
2336                 }
2337                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
2338         }
2339         portCount = clientportcount;
2340
2341         log(DEBUG,"InspIRCd: startup: read %lu total client ports",(unsigned long)portCount);
2342         log(DEBUG,"InspIRCd: startup: InspIRCd is now starting!");
2343
2344         printf("\n");
2345
2346         /* BugFix By Craig! :p */
2347         MODCOUNT = -1;
2348         for (count = 0; count < ConfValueEnum("module",&config_f); count++)
2349         {
2350                 ConfValue("module","name",count,configToken,&config_f);
2351                 printf("Loading module... \033[1;32m%s\033[0m\n",configToken);
2352                 if (!LoadModule(configToken))
2353                 {
2354                         log(DEFAULT,"Exiting due to a module loader error.");
2355                         printf("\nThere was an error loading a module: %s\n\nYou might want to do './inspircd start' instead of 'bin/inspircd'\n\n",ModuleError());
2356                         Exit(0);
2357                 }
2358         }
2359         log(DEFAULT,"Total loaded modules: %lu",(unsigned long)MODCOUNT+1);
2360
2361         startup_time = time(NULL);
2362
2363         char PID[MAXBUF];
2364         ConfValue("pid","file",0,PID,&config_f);
2365         // write once here, to try it out and make sure its ok
2366         WritePID(PID);
2367
2368         /* setup select call */
2369 #ifdef USE_SELECT
2370         FD_ZERO(&selectFds);
2371 #endif
2372         log(DEBUG,"InspIRCd: startup: zero selects");
2373         log(VERBOSE,"InspIRCd: startup: portCount = %lu", (unsigned long)portCount);
2374
2375         for (count = 0; count < portCount; count++)
2376         {
2377                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
2378                 {
2379                         log(DEBUG,"InspIRCd: startup: bad fd %lu",(unsigned long)openSockfd[boundPortCount]);
2380                         return(ERROR);
2381                 }
2382                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
2383                 {
2384                         log(DEFAULT,"InspIRCd: startup: failed to bind port %lu",(unsigned long)ports[count]);
2385                 }
2386                 else    /* well we at least bound to one socket so we'll continue */
2387                 {
2388                         boundPortCount++;
2389                 }
2390         }
2391
2392         log(DEBUG,"InspIRCd: startup: total bound ports %lu",(unsigned long)boundPortCount);
2393
2394         /* if we didn't bind to anything then abort */
2395         if (boundPortCount == 0)
2396         {
2397                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
2398                 printf("\nERROR: Was not able to bind any of %lu ports! Please check your configuration.\n\n", (unsigned long)portCount);
2399                 return (ERROR);
2400         }
2401
2402
2403         printf("\nInspIRCd is now running!\n");
2404
2405         if (nofork)
2406         {
2407                 log(VERBOSE,"Not forking as -nofork was specified");
2408         }
2409         else
2410         {
2411                 if (DaemonSeed() == ERROR)
2412                 {
2413                         log(DEFAULT,"InspIRCd: startup: can't daemonise");
2414                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
2415                         Exit(ERROR);
2416                 }
2417         }
2418
2419         engine_init;
2420         engine_server_fill;
2421
2422         WritePID(PID);
2423
2424         length = sizeof (client);
2425         engine_structs;
2426         timeval tvs;
2427         tvs.tv_usec = 10000L;
2428         tvs.tv_sec = 0;
2429         tv.tv_sec = 0;
2430         tv.tv_usec = 10000L;
2431         char data[65536];
2432         timeval tval;
2433         tval.tv_usec = 10000L;
2434         tval.tv_sec = 0;
2435         int total_in_this_set = 0;
2436         int i = 0, v = 0, j = 0, cycle_iter = 0;
2437         bool expire_run = false;
2438
2439         cycle_iter = i = j = 0;         // stop the compiler whining - these may be marked unused in certain socket engine types
2440
2441         /* main loop, this never returns */
2442         for (;;)
2443         {
2444 #ifdef _POSIX_PRIORITY_SCHEDULING
2445                 sched_yield();
2446 #endif
2447 #ifdef USE_SELECT
2448                 FD_ZERO(&sfd);
2449 #endif
2450                 // we only read time() once per iteration rather than tons of times!
2451                 OLDTIME = TIME;
2452                 TIME = time(NULL);
2453
2454 #ifndef THREADED_DNS
2455                 dns_poll();
2456 #endif
2457
2458                 unsigned int numsockets = module_sockets.size();
2459                 for (std::vector<InspSocket*>::iterator a = module_sockets.begin(); a < module_sockets.end(); a++)
2460                 {
2461                         InspSocket* s = (InspSocket*)*a;
2462                         if ((s) && (!s->Poll()))
2463                         {
2464                                 log(DEBUG,"Socket poll returned false, close and bail");
2465                                 s->Close();
2466                                 module_sockets.erase(a);
2467                                 delete s;
2468                                 break;
2469                         }
2470                         // we gained a socket, sarper
2471                         if (module_sockets.size() != numsockets) break;
2472                 }
2473
2474                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
2475                 // them in a list, then reap the list every second or so.
2476                 if (((TIME % 5) == 0) && (!expire_run))
2477                 {
2478                         expire_lines();
2479                         FOREACH_MOD OnBackgroundTimer(TIME);
2480                         expire_run = true;
2481                         continue;
2482                 }
2483                 if ((TIME % 5) == 1)
2484                         expire_run = false;
2485
2486                 // fix by brain - this must be below any manipulation of the hashmap by modules
2487                 user_hash::iterator count2 = clientlist.begin();
2488
2489
2490                 while (count2 != clientlist.end())
2491                 {
2492 #ifdef USE_SELECT
2493                         FD_ZERO(&sfd);
2494 #endif
2495
2496                         total_in_this_set = 0;
2497
2498                         user_hash::iterator xcount = count2;
2499                         user_hash::iterator endingiter = count2;
2500
2501                         if (count2 == clientlist.end()) break;
2502
2503                         userrec* curr = NULL;
2504
2505                         if (count2->second)
2506                                 curr = count2->second;
2507
2508                         if ((long)curr == -1)
2509                                 goto label;
2510
2511                         if ((curr) && (curr->fd != 0))
2512                         {
2513 #ifdef _POSIX_PRIORITY_SCHEDULING
2514                 sched_yield();
2515 #endif
2516                                 // assemble up to 64 sockets into an fd_set
2517                                 // to implement a pooling mechanism.
2518                                 //
2519                                 // This should be up to 64x faster than the
2520                                 // old implementation.
2521 #ifdef USE_SELECT
2522                                 while (total_in_this_set < 1024)
2523                                 {
2524                                         if (count2 != clientlist.end())
2525                                         {
2526                                                 curr = count2->second;
2527                                                 if ((long)curr == -1)
2528                                                         goto label;
2529                                                 int currfd = curr->fd;
2530                                                 // we don't check the state of remote users.
2531                                                 if ((currfd != -1) && (currfd != FD_MAGIC_NUMBER))
2532                                                 {
2533                                                         curr->FlushWriteBuf();
2534                                                         if (curr->GetWriteError() != "")
2535                                                         {
2536                                                                 log(DEBUG,"InspIRCd: write error: %s",curr->GetWriteError().c_str());
2537                                                                 kill_link(curr,curr->GetWriteError().c_str());
2538                                                                 goto label;
2539                                                         }
2540
2541                                                         FD_SET (curr->fd, &sfd);
2542
2543                                                         // registration timeout -- didnt send USER/NICK/HOST in the time specified in
2544                                                         // their connection class.
2545                                                         if (((unsigned)TIME > (unsigned)curr->timeout) && (curr->registered != 7))
2546                                                         {
2547                                                                 log(DEBUG,"InspIRCd: registration timeout: %s",curr->nick);
2548                                                                 kill_link(curr,"Registration timeout");
2549                                                                 goto label;
2550                                                         }
2551                                                         if ((TIME > curr->signon) && (curr->registered == 3) && (AllModulesReportReady(curr)))
2552                                                         {
2553                                                                 log(DEBUG,"signon exceed, registered=3, and modules ready, OK");
2554                                                                 curr->dns_done = true;
2555                                                                 statsDnsBad++;
2556                                                                 FullConnectUser(curr);
2557                                                                 if (fd_ref_table[currfd] != curr) // something changed, bail pronto
2558                                                                         goto label;
2559                                                         }
2560                                                         if ((curr->dns_done) && (curr->registered == 3) && (AllModulesReportReady(curr))) // both NICK and USER... and DNS
2561                                                         {
2562                                                                 log(DEBUG,"dns done, registered=3, and modules ready, OK");
2563                                                                 FullConnectUser(curr);
2564                                                                 if (fd_ref_table[currfd] != curr) // something changed, bail pronto
2565                                                                         goto label;
2566                                                         }
2567                                                         if ((TIME > curr->nping) && (isnick(curr->nick)) && (curr->registered == 7))
2568                                                         {
2569                                                                 if ((!curr->lastping) && (curr->registered == 7))
2570                                                                 {
2571                                                                         log(DEBUG,"InspIRCd: ping timeout: %s",curr->nick);
2572                                                                         kill_link(curr,"Ping timeout");
2573                                                                         goto label;
2574                                                                 }
2575                                                                 Write(curr->fd,"PING :%s",ServerName);
2576                                                                 log(DEBUG,"InspIRCd: pinging: %s",curr->nick);
2577                                                                 curr->lastping = 0;
2578                                                                 curr->nping = TIME+curr->pingmax;       // was hard coded to 120
2579                                                         }
2580                                                 }
2581                                                 count2++;
2582                                                 total_in_this_set++;
2583                                         }
2584                                         else break;
2585                                 }
2586                                 endingiter = count2;
2587                                 count2 = xcount; // roll back to where we were
2588 #else
2589                                 // KQUEUE and EPOLL: We don't go through a loop to fill the fd_set so instead we must manually do this loop every now and again.
2590                                 // TODO: We dont need to do all this EVERY loop iteration, tone down the visits to this if we're using kqueue.
2591                                 cycle_iter++;
2592                                 if (cycle_iter > 20) while (count2 != clientlist.end())
2593                                 {
2594                                         cycle_iter = 0;
2595                                         if (count2 != clientlist.end())
2596                                         {
2597                                                 curr = count2->second;
2598                                                 if ((long)curr == -1)
2599                                                         goto label;
2600                                                 int currfd = curr->fd;
2601                                                 // we don't check the state of remote users.
2602                                                 if ((currfd != -1) && (currfd != FD_MAGIC_NUMBER))
2603                                                 {
2604                                                         curr->FlushWriteBuf();
2605                                                         if (curr->GetWriteError() != "")
2606                                                         {
2607                                                                 log(DEBUG,"InspIRCd: write error: %s",curr->GetWriteError().c_str());
2608                                                                 kill_link(curr,curr->GetWriteError().c_str());
2609                                                                 goto label;
2610                                                         }
2611
2612                                                         // registration timeout -- didnt send USER/NICK/HOST in the time specified in
2613                                                         // their connection class.
2614                                                         if (((unsigned)TIME > (unsigned)curr->timeout) && (curr->registered != 7))
2615                                                         {
2616                                                                 log(DEBUG,"InspIRCd: registration timeout: %s",curr->nick);
2617                                                                 kill_link(curr,"Registration timeout");
2618                                                                 goto label;
2619
2620                                                         }
2621                                                         if ((TIME > curr->signon) && (curr->registered == 3) && (AllModulesReportReady(curr)))
2622                                                         {
2623                                                                 log(DEBUG,"signon exceed, registered=3, and modules ready, OK: %d %d",TIME,curr->signon);
2624                                                                 curr->dns_done = true;
2625                                                                 statsDnsBad++;
2626                                                                 FullConnectUser(curr);
2627                                                                 if (fd_ref_table[currfd] != curr) // something changed, bail pronto
2628                                                                         goto label;
2629                                                         }
2630                                                         if ((curr->dns_done) && (curr->registered == 3) && (AllModulesReportReady(curr)))
2631                                                         {
2632                                                                 log(DEBUG,"dns done, registered=3, and modules ready, OK");
2633                                                                 FullConnectUser(curr);
2634                                                                 if (fd_ref_table[currfd] != curr) // something changed, bail pronto
2635                                                                         goto label;
2636                                                         }
2637                                                         if ((TIME > curr->nping) && (isnick(curr->nick)) && (curr->registered == 7))
2638                                                         {
2639                                                                 if ((!curr->lastping) && (curr->registered == 7))
2640                                                                 {
2641                                                                         log(DEBUG,"InspIRCd: ping timeout: %s",curr->nick);
2642                                                                         kill_link(curr,"Ping timeout");
2643                                                                         goto label;
2644                                                                 }
2645                                                                 Write(curr->fd,"PING :%s",ServerName);
2646                                                                 log(DEBUG,"InspIRCd: pinging: %s",curr->nick);
2647                                                                 curr->lastping = 0;
2648                                                                 curr->nping = TIME+curr->pingmax;       // was hard coded to 120
2649                                                         }
2650                                                 }
2651                                         }
2652                                         else break;
2653                                         count2++;
2654                                 }
2655                                 // increment the counter right to the end of the list, as kqueue processes everything in one go
2656 #endif
2657
2658                                 v = 0;
2659                                 engine_fill;
2660
2661 #ifdef _POSIX_PRIORITY_SCHEDULING
2662                                         sched_yield();
2663 #endif
2664                                         result = EAGAIN;
2665                                         if (engine_check)
2666                                         {
2667                                                 log(DEBUG,"Data waiting on socket %d",cu->fd);
2668                                                 int MOD_RESULT = 0;
2669                                                 int result2 = 0;
2670                                                 FOREACH_RESULT(OnRawSocketRead(cu->fd,data,65535,result2));
2671                                                 if (!MOD_RESULT)
2672                                                 {
2673                                                         result = cu->ReadData(data, 65535);
2674                                                 }
2675                                                 else
2676                                                 {
2677                                                         log(DEBUG,"Data result returned by module: %d",MOD_RESULT);
2678                                                         result = result2;
2679                                                 }
2680                                                 log(DEBUG,"Read result: %d",result);
2681                                                 if (result)
2682                                                 {
2683                                                         statsRecv += result;
2684                                                         // perform a check on the raw buffer as an array (not a string!) to remove
2685                                                         // characters 0 and 7 which are illegal in the RFC - replace them with spaces.
2686                                                         // hopefully this should stop even more people whining about "Unknown command: *"
2687                                                         for (int checker = 0; checker < result; checker++)
2688                                                         {
2689                                                                 if ((data[checker] == 0) || (data[checker] == 7))
2690                                                                         data[checker] = ' ';
2691                                                         }
2692                                                         if (result > 0)
2693                                                                 data[result] = '\0';
2694                                                         userrec* current = cu;
2695                                                         int currfd = current->fd;
2696                                                         int floodlines = 0;
2697                                                         // add the data to the users buffer
2698                                                         if (result > 0)
2699                                                         if (!current->AddBuffer(data))
2700                                                         {
2701                                                                 // AddBuffer returned false, theres too much data in the user's buffer and theyre up to no good.
2702                                                                 if (current->registered == 7)
2703                                                                 {
2704                                                                         kill_link(current,"RecvQ exceeded");
2705                                                                 }
2706                                                                 else
2707                                                                 {
2708                                                                         WriteOpers("*** Excess flood from %s",current->ip);
2709                                                                         log(DEFAULT,"Excess flood from: %s",current->ip);
2710                                                                         add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
2711                                                                         apply_lines();
2712                                                                 }
2713                                                                 goto label;
2714                                                         }
2715                                                         if (current->recvq.length() > (unsigned)NetBufferSize)
2716                                                         {
2717                                                                 if (current->registered == 7)
2718                                                                 {
2719                                                                         kill_link(current,"RecvQ exceeded");
2720                                                                 }
2721                                                                 else
2722                                                                 {
2723                                                                         WriteOpers("*** Excess flood from %s",current->ip);
2724                                                                         log(DEFAULT,"Excess flood from: %s",current->ip);
2725                                                                         add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
2726                                                                         apply_lines();
2727                                                                 }
2728                                                                 goto label;
2729                                                         }
2730                                                         // while there are complete lines to process...
2731                                                         while (current->BufferIsReady())
2732                                                         {
2733                                                                 floodlines++;
2734                                                                 if (TIME > current->reset_due)
2735                                                                 {
2736                                                                         current->reset_due = TIME + current->threshold;
2737                                                                         current->lines_in = 0;
2738                                                                 }
2739                                                                 current->lines_in++;
2740                                                                 if (current->lines_in > current->flood)
2741                                                                 {
2742                                                                         log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
2743                                                                         WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
2744                                                                         kill_link(current,"Excess flood");
2745                                                                         goto label;
2746                                                                 }
2747                                                                 if ((floodlines > current->flood) && (current->flood != 0))
2748                                                                 {
2749                                                                         if (current->registered == 7)
2750                                                                         {
2751                                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
2752                                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
2753                                                                                 kill_link(current,"Excess flood");
2754                                                                         }
2755                                                                         else
2756                                                                         {
2757                                                                                 add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
2758                                                                                 apply_lines();
2759                                                                         }
2760                                                                         goto label;
2761                                                                 }
2762                                                                 char sanitized[MAXBUF];
2763                                                                 // use GetBuffer to copy single lines into the sanitized string
2764                                                                 std::string single_line = current->GetBuffer();
2765                                                                 current->bytes_in += single_line.length();
2766                                                                 current->cmds_in++;
2767                                                                 if (single_line.length()>512)
2768                                                                 {
2769                                                                         log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
2770                                                                         WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
2771                                                                         kill_link(current,"Excess flood");
2772                                                                         goto label;
2773                                                                 }
2774                                                                 strlcpy(sanitized,single_line.c_str(),MAXBUF);
2775                                                                 if (*sanitized)
2776                                                                 {
2777                                                                         userrec* old_comp = fd_ref_table[currfd];
2778                                                                         // we're gonna re-scan to check if the nick is gone, after every
2779                                                                         // command - if it has, we're gonna bail
2780                                                                         process_buffer(sanitized,current);
2781                                                                         // look for the user's record in case it's changed... if theyve quit,
2782                                                                         // we cant do anything more with their buffer, so bail.
2783                                                                         // there used to be an ugly, slow loop here. Now we have a reference
2784                                                                         // table, life is much easier (and FASTER)
2785                                                                         userrec* new_comp = fd_ref_table[currfd];
2786                                                                         if ((currfd < 0) || (!fd_ref_table[currfd]) || (old_comp != new_comp))
2787                                                                                 goto label;
2788
2789                                                                 }
2790                                                         }
2791                                                         goto label;
2792                                                 }
2793
2794                                                 if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
2795                                                 {
2796                                                         log(DEBUG,"killing: %s",cu->nick);
2797                                                         kill_link(cu,strerror(errno));
2798                                                         goto label;
2799                                                 }
2800                                         }
2801                                         // result EAGAIN means nothing read
2802                                         if (result == EAGAIN)
2803                                         {
2804                                         }
2805                                         else
2806                                         if (result == 0)
2807                                         {
2808                                                 engine_cleanup;
2809                                         }
2810                                         else if (result > 0)
2811                                         {
2812                                         }
2813                                 }
2814                         }
2815                         for (int q = 0; q < total_in_this_set; q++)
2816                         {
2817                                 count2++;
2818                         }
2819                 }
2820
2821 #ifdef _POSIX_PRIORITY_SCHEDULING
2822                 sched_yield();
2823 #endif
2824
2825
2826                 engine_scanset;
2827                                 char target[MAXBUF], resolved[MAXBUF];
2828                                 length = sizeof (client);
2829                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
2830                                 log(DEBUG,"Accepted socket %d",incomingSockfd);
2831
2832                                 strlcpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
2833                                 strlcpy (resolved, target, MAXBUF);
2834
2835                                 if (incomingSockfd < 0)
2836                                 {
2837                                         WriteOpers("*** WARNING: Accept failed on port %lu (%s)",(unsigned long)ports[count],target);
2838                                         log(DEBUG,"InspIRCd: accept failed: %lu",(unsigned long)ports[count]);
2839                                         statsRefused++;
2840                                 }
2841                                 else
2842                                 {
2843                                         FOREACH_MOD OnRawSocketAccept(incomingSockfd, resolved, ports[count]);
2844                                         statsAccept++;
2845                                         AddClient(incomingSockfd, resolved, ports[count], false, inet_ntoa (client.sin_addr));
2846                                         log(DEBUG,"InspIRCd: adding client on port %lu fd=%lu",(unsigned long)ports[count],(unsigned long)incomingSockfd);
2847                                 }
2848                         }
2849                 }
2850         }
2851         label:
2852         if (0) {};
2853 #ifdef _POSIX_PRIORITY_SCHEDULING
2854         sched_yield();
2855         sched_yield();
2856 #endif
2857 }
2858 /* not reached */
2859 close (incomingSockfd);
2860 return 0;
2861 }
2862