src/inspircd.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 /* Now with added unF! ;) */
  18
  19 using namespace std;
  20
  21 #include "inspircd.h"
  22 #include "inspircd_io.h"
  23 #include "inspircd_util.h"
  24 #include "inspircd_config.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 #ifdef USE_KQUEUE
  31 #include <sys/types.h>
  32 #include <sys/event.h>
  33 #include <sys/time.h>
  34 #endif
  35 #include <cstdio>
  36 #include <time.h>
  37 #include <string>
  38 #ifdef GCC3
  39 #include <ext/hash_map>
  40 #else
  41 #include <hash_map>
  42 #endif
  43 #include <map>
  44 #include <sstream>
  45 #include <vector>
  46 #include <errno.h>
  47 #include <deque>
  48 #include <errno.h>
  49 #include <unistd.h>
  50 #include <sched.h>
  51 #include "connection.h"
  52 #include "users.h"
  53 #include "servers.h"
  54 #include "ctables.h"
  55 #include "globals.h"
  56 #include "modules.h"
  57 #include "dynamic.h"
  58 #include "wildcard.h"
  59 #include "message.h"
  60 #include "mode.h"
  61 #include "commands.h"
  62 #include "xline.h"
  63 #include "inspstring.h"
  64 #include "dnsqueue.h"
  65
  66 #ifdef GCC3
  67 #define nspace __gnu_cxx
  68 #else
  69 #define nspace std
  70 #endif
  71
  72 int LogLevel = DEFAULT;
  73 char ServerName[MAXBUF];
  74 char Network[MAXBUF];
  75 char ServerDesc[MAXBUF];
  76 char AdminName[MAXBUF];
  77 char AdminEmail[MAXBUF];
  78 char AdminNick[MAXBUF];
  79 char diepass[MAXBUF];
  80 char restartpass[MAXBUF];
  81 char motd[MAXBUF];
  82 char rules[MAXBUF];
  83 char list[MAXBUF];
  84 char PrefixQuit[MAXBUF];
  85 char DieValue[MAXBUF];
  86 char DNSServer[MAXBUF];
  87 int debugging =  0;
  88 int WHOWAS_STALE = 48; // default WHOWAS Entries last 2 days before they go 'stale'
  89 int WHOWAS_MAX = 100;  // default 100 people maximum in the WHOWAS list
  90 int DieDelay  =  5;
  91 time_t startup_time = time(NULL);
  92 int NetBufferSize = 10240; // NetBufferSize used as the buffer size for all read() ops
  93 extern int MaxWhoResults;
  94 time_t nb_start = 0;
  95 int dns_timeout = 5;
  96
  97 char DisabledCommands[MAXBUF];
  98
  99 bool AllowHalfop = true;
 100 bool AllowProtect = true;
 101 bool AllowFounder = true;
 102
 103 extern std::vector<Module*> modules;
 104 std::vector<std::string> module_names;
 105 extern std::vector<ircd_module*> factory;
 106
 107 extern int MODCOUNT;
 108 int openSockfd[MAXSOCKS];
 109 bool nofork = false;
 110 bool unlimitcore = false;
 111
 112 time_t TIME = time(NULL), OLDTIME = time(NULL);
 113
 114 #ifdef USE_KQUEUE
 115 int kq, lkq, skq;
 116 #endif
 117
 118 namespace nspace
 119 {
 120 #ifdef GCC34
 121         template<> struct hash<in_addr>
 122 #else
 123         template<> struct nspace::hash<in_addr>
 124 #endif
 125         {
 126                 size_t operator()(const struct in_addr &a) const
 127                 {
 128                         size_t q;
 129                         memcpy(&q,&a,sizeof(size_t));
 130                         return q;
 131                 }
 132         };
 133 #ifdef GCC34
 134         template<> struct hash<string>
 135 #else
 136         template<> struct nspace::hash<string>
 137 #endif
 138         {
 139                 size_t operator()(const string &s) const
 140                 {
 141                         char a[MAXBUF];
 142                         static struct hash<const char *> strhash;
 143                         strlcpy(a,s.c_str(),MAXBUF);
 144                         strlower(a);
 145                         return strhash(a);
 146                 }
 147         };
 148 }
 149
 150
 151 struct StrHashComp
 152 {
 153
 154         bool operator()(const string& s1, const string& s2) const
 155         {
 156                 char a[MAXBUF],b[MAXBUF];
 157                 strlcpy(a,s1.c_str(),MAXBUF);
 158                 strlcpy(b,s2.c_str(),MAXBUF);
 159                 strlower(a);
 160                 strlower(b);
 161                 return (strcasecmp(a,b) == 0);
 162         }
 163
 164 };
 165
 166 struct InAddr_HashComp
 167 {
 168
 169         bool operator()(const in_addr &s1, const in_addr &s2) const
 170         {
 171                 size_t q;
 172                 size_t p;
 173
 174                 memcpy(&q,&s1,sizeof(size_t));
 175                 memcpy(&p,&s2,sizeof(size_t));
 176
 177                 return (q == p);
 178         }
 179
 180 };
 181
 182
 183 typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, StrHashComp> user_hash;
 184 typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, StrHashComp> chan_hash;
 185 typedef nspace::hash_map<in_addr,string*, nspace::hash<in_addr>, InAddr_HashComp> address_cache;
 186 typedef std::deque<command_t> command_table;
 187
 188 // This table references users by file descriptor.
 189 // its an array to make it VERY fast, as all lookups are referenced
 190 // by an integer, meaning there is no need for a scan/search operation.
 191 userrec* fd_ref_table[65536];
 192
 193 int statsAccept = 0, statsRefused = 0, statsUnknown = 0, statsCollisions = 0, statsDns = 0, statsDnsGood = 0, statsDnsBad = 0, statsConnects = 0, statsSent= 0, statsRecv = 0;
 194
 195 serverrec* me[32];
 196
 197 FILE *log_file;
 198
 199 user_hash clientlist;
 200 chan_hash chanlist;
 201 user_hash whowas;
 202 command_table cmdlist;
 203 file_cache MOTD;
 204 file_cache RULES;
 205 address_cache IP;
 206
 207 ClassVector Classes;
 208
 209 struct linger linger = { 0 };
 210 char MyExecutable[1024];
 211 int boundPortCount = 0;
 212 int portCount = 0, SERVERportCount = 0, ports[MAXSOCKS];
 213 int defaultRoute = 0;
 214 char ModPath[MAXBUF];
 215
 216 /* prototypes */
 217
 218 int has_channel(userrec *u, chanrec *c);
 219 int usercount(chanrec *c);
 220 int usercount_i(chanrec *c);
 221 char* Passwd(userrec *user);
 222 bool IsDenied(userrec *user);
 223 void AddWhoWas(userrec* u);
 224
 225 std::vector<long> auth_cookies;
 226 std::stringstream config_f(stringstream::in | stringstream::out);
 227
 228 std::vector<userrec*> all_opers;
 229
 230 static char already_sent[65536];
 231
 232 char lowermap[255];
 233
 234 void AddOper(userrec* user)
 235 {
 236         log(DEBUG,"Oper added to optimization list");
 237         all_opers.push_back(user);
 238 }
 239
 240 void DeleteOper(userrec* user)
 241 {
 242         for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 243         {
 244                 if (*a == user)
 245                 {
 246                         log(DEBUG,"Oper removed from optimization list");
 247                         all_opers.erase(a);
 248                         return;
 249                 }
 250         }
 251 }
 252
 253 long GetRevision()
 254 {
 255         char Revision[] = "$Revision$";
 256         char *s1 = Revision;
 257         char *savept;
 258         char *v2 = strtok_r(s1," ",&savept);
 259         s1 = savept;
 260         v2 = strtok_r(s1," ",&savept);
 261         s1 = savept;
 262         return (long)(atof(v2)*10000);
 263 }
 264
 265
 266 std::string getservername()
 267 {
 268         return ServerName;
 269 }
 270
 271 std::string getserverdesc()
 272 {
 273         return ServerDesc;
 274 }
 275
 276 std::string getnetworkname()
 277 {
 278         return Network;
 279 }
 280
 281 std::string getadminname()
 282 {
 283         return AdminName;
 284 }
 285
 286 std::string getadminemail()
 287 {
 288         return AdminEmail;
 289 }
 290
 291 std::string getadminnick()
 292 {
 293         return AdminNick;
 294 }
 295
 296 void log(int level,char *text, ...)
 297 {
 298         char textbuffer[MAXBUF];
 299         va_list argsPtr;
 300         time_t rawtime;
 301         struct tm * timeinfo;
 302         if (level < LogLevel)
 303                 return;
 304
 305         time(&rawtime);
 306         timeinfo = localtime (&rawtime);
 307
 308         if (log_file)
 309         {
 310                 char b[MAXBUF];
 311                 va_start (argsPtr, text);
 312                 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 313                 va_end(argsPtr);
 314                 strlcpy(b,asctime(timeinfo),MAXBUF);
 315                 b[24] = ':';    // we know this is the end of the time string
 316                 fprintf(log_file,"%s %s\n",b,textbuffer);
 317                 if (nofork)
 318                 {
 319                         // nofork enabled? display it on terminal too
 320                         printf("%s %s\n",b,textbuffer);
 321                 }
 322         }
 323 }
 324
 325 void readfile(file_cache &F, const char* fname)
 326 {
 327         FILE* file;
 328         char linebuf[MAXBUF];
 329
 330         log(DEBUG,"readfile: loading %s",fname);
 331         F.clear();
 332         file =  fopen(fname,"r");
 333         if (file)
 334         {
 335                 while (!feof(file))
 336                 {
 337                         fgets(linebuf,sizeof(linebuf),file);
 338                         linebuf[strlen(linebuf)-1]='\0';
 339                         if (linebuf[0] == 0)
 340                         {
 341                                 strcpy(linebuf,"  ");
 342                         }
 343                         if (!feof(file))
 344                         {
 345                                 F.push_back(linebuf);
 346                         }
 347                 }
 348                 fclose(file);
 349         }
 350         else
 351         {
 352                 log(DEBUG,"readfile: failed to load file: %s",fname);
 353         }
 354         log(DEBUG,"readfile: loaded %s, %lu lines",fname,(unsigned long)F.size());
 355 }
 356
 357 void ReadConfig(bool bail, userrec* user)
 358 {
 359         char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF],MW[MAXBUF];
 360         char AH[MAXBUF],AP[MAXBUF],AF[MAXBUF],DNT[MAXBUF],pfreq[MAXBUF],thold[MAXBUF],sqmax[MAXBUF],rqmax[MAXBUF];
 361         ConnectClass c;
 362         std::stringstream errstr;
 363
 364         if (!LoadConf(CONFIG_FILE,&config_f,&errstr))
 365         {
 366                 errstr.seekg(0);
 367                 if (bail)
 368                 {
 369                         printf("There were errors in your configuration:\n%s",errstr.str().c_str());
 370                         Exit(0);
 371                 }
 372                 else
 373                 {
 374                         char dataline[1024];
 375                         if (user)
 376                         {
 377                                 WriteServ(user->fd,"NOTICE %s :There were errors in the configuration file:",user->nick);
 378                                 while (!errstr.eof())
 379                                 {
 380                                         errstr.getline(dataline,1024);
 381                                         WriteServ(user->fd,"NOTICE %s :%s",user->nick,dataline);
 382                                 }
 383                         }
 384                         else
 385                         {
 386                                 WriteOpers("There were errors in the configuration file:",user->nick);
 387                                 while (!errstr.eof())
 388                                 {
 389                                         errstr.getline(dataline,1024);
 390                                         WriteOpers(dataline);
 391                                 }
 392                         }
 393                         return;
 394                 }
 395         }
 396
 397         ConfValue("server","name",0,ServerName,&config_f);
 398         ConfValue("server","description",0,ServerDesc,&config_f);
 399         ConfValue("server","network",0,Network,&config_f);
 400         ConfValue("admin","name",0,AdminName,&config_f);
 401         ConfValue("admin","email",0,AdminEmail,&config_f);
 402         ConfValue("admin","nick",0,AdminNick,&config_f);
 403         ConfValue("files","motd",0,motd,&config_f);
 404         ConfValue("files","rules",0,rules,&config_f);
 405         ConfValue("power","diepass",0,diepass,&config_f);
 406         ConfValue("power","pause",0,pauseval,&config_f);
 407         ConfValue("power","restartpass",0,restartpass,&config_f);
 408         ConfValue("options","prefixquit",0,PrefixQuit,&config_f);
 409         ConfValue("die","value",0,DieValue,&config_f);
 410         ConfValue("options","loglevel",0,dbg,&config_f);
 411         ConfValue("options","netbuffersize",0,NB,&config_f);
 412         ConfValue("options","maxwho",0,MW,&config_f);
 413         ConfValue("options","allowhalfop",0,AH,&config_f);
 414         ConfValue("options","allowprotect",0,AP,&config_f);
 415         ConfValue("options","allowfounder",0,AF,&config_f);
 416         ConfValue("dns","server",0,DNSServer,&config_f);
 417         ConfValue("dns","timeout",0,DNT,&config_f);
 418         ConfValue("options","moduledir",0,ModPath,&config_f);
 419         ConfValue("disabled","commands",0,DisabledCommands,&config_f);
 420
 421         NetBufferSize = atoi(NB);
 422         MaxWhoResults = atoi(MW);
 423         dns_timeout = atoi(DNT);
 424         if (!dns_timeout)
 425                 dns_timeout = 5;
 426         if (!DNSServer[0])
 427                 strlcpy(DNSServer,"127.0.0.1",MAXBUF);
 428         if (!ModPath[0])
 429                 strlcpy(ModPath,MOD_PATH,MAXBUF);
 430         AllowHalfop = ((!strcasecmp(AH,"true")) || (!strcasecmp(AH,"1")) || (!strcasecmp(AH,"yes")));
 431         AllowProtect = ((!strcasecmp(AP,"true")) || (!strcasecmp(AP,"1")) || (!strcasecmp(AP,"yes")));
 432         AllowFounder = ((!strcasecmp(AF,"true")) || (!strcasecmp(AF,"1")) || (!strcasecmp(AF,"yes")));
 433         if ((!NetBufferSize) || (NetBufferSize > 65535) || (NetBufferSize < 1024))
 434         {
 435                 log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
 436                 NetBufferSize = 10240;
 437         }
 438         if ((!MaxWhoResults) || (MaxWhoResults > 65535) || (MaxWhoResults < 1))
 439         {
 440                 log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128.");
 441                 MaxWhoResults = 128;
 442         }
 443         if (!strcmp(dbg,"debug"))
 444                 LogLevel = DEBUG;
 445         if (!strcmp(dbg,"verbose"))
 446                 LogLevel = VERBOSE;
 447         if (!strcmp(dbg,"default"))
 448                 LogLevel = DEFAULT;
 449         if (!strcmp(dbg,"sparse"))
 450                 LogLevel = SPARSE;
 451         if (!strcmp(dbg,"none"))
 452                 LogLevel = NONE;
 453         readfile(MOTD,motd);
 454         log(DEFAULT,"Reading message of the day...");
 455         readfile(RULES,rules);
 456         log(DEFAULT,"Reading connect classes...");
 457         Classes.clear();
 458         for (int i = 0; i < ConfValueEnum("connect",&config_f); i++)
 459         {
 460                 strcpy(Value,"");
 461                 ConfValue("connect","allow",i,Value,&config_f);
 462                 ConfValue("connect","timeout",i,timeout,&config_f);
 463                 ConfValue("connect","flood",i,flood,&config_f);
 464                 ConfValue("connect","pingfreq",i,pfreq,&config_f);
 465                 ConfValue("connect","threshold",i,thold,&config_f);
 466                 ConfValue("connect","sendq",i,sqmax,&config_f);
 467                 ConfValue("connect","recvq",i,rqmax,&config_f);
 468                 if (Value[0])
 469                 {
 470                         strlcpy(c.host,Value,MAXBUF);
 471                         c.type = CC_ALLOW;
 472                         strlcpy(Value,"",MAXBUF);
 473                         ConfValue("connect","password",i,Value,&config_f);
 474                         strlcpy(c.pass,Value,MAXBUF);
 475                         c.registration_timeout = 90; // default is 2 minutes
 476                         c.pingtime = 120;
 477                         c.flood = atoi(flood);
 478                         c.threshold = 5;
 479                         c.sendqmax = 262144; // 256k
 480                         c.recvqmax = 4096;   // 4k
 481                         if (atoi(thold)>0)
 482                         {
 483                                 c.threshold = atoi(thold);
 484                         }
 485                         if (atoi(sqmax)>0)
 486                         {
 487                                 c.sendqmax = atoi(sqmax);
 488                         }
 489                         if (atoi(rqmax)>0)
 490                         {
 491                                 c.recvqmax = atoi(rqmax);
 492                         }
 493                         if (atoi(timeout)>0)
 494                         {
 495                                 c.registration_timeout = atoi(timeout);
 496                         }
 497                         if (atoi(pfreq)>0)
 498                         {
 499                                 c.pingtime = atoi(pfreq);
 500                         }
 501                         Classes.push_back(c);
 502                         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);
 503                 }
 504                 else
 505                 {
 506                         ConfValue("connect","deny",i,Value,&config_f);
 507                         strlcpy(c.host,Value,MAXBUF);
 508                         c.type = CC_DENY;
 509                         Classes.push_back(c);
 510                         log(DEBUG,"Read connect class type DENY, host=%s",c.host);
 511                 }
 512
 513         }
 514         log(DEFAULT,"Reading K lines,Q lines and Z lines from config...");
 515         read_xline_defaults();
 516         log(DEFAULT,"Applying K lines, Q lines and Z lines...");
 517         apply_lines();
 518         log(DEFAULT,"Done reading configuration file, InspIRCd is now starting.");
 519         if (!bail)
 520         {
 521                 log(DEFAULT,"Adding and removing modules due to rehash...");
 522
 523                 std::vector<std::string> old_module_names, new_module_names, added_modules, removed_modules;
 524
 525                 // store the old module names
 526                 for (std::vector<std::string>::iterator t = module_names.begin(); t != module_names.end(); t++)
 527                 {
 528                         old_module_names.push_back(*t);
 529                 }
 530
 531                 // get the new module names
 532                 for (int count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
 533                 {
 534                         ConfValue("module","name",count2,Value,&config_f);
 535                         new_module_names.push_back(Value);
 536                 }
 537
 538                 // now create a list of new modules that are due to be loaded
 539                 // and a seperate list of modules which are due to be unloaded
 540                 for (std::vector<std::string>::iterator _new = new_module_names.begin(); _new != new_module_names.end(); _new++)
 541                 {
 542                         bool added = true;
 543                         for (std::vector<std::string>::iterator old = old_module_names.begin(); old != old_module_names.end(); old++)
 544                         {
 545                                 if (*old == *_new)
 546                                         added = false;
 547                         }
 548                         if (added)
 549                                 added_modules.push_back(*_new);
 550                 }
 551                 for (std::vector<std::string>::iterator oldm = old_module_names.begin(); oldm != old_module_names.end(); oldm++)
 552                 {
 553                         bool removed = true;
 554                         for (std::vector<std::string>::iterator newm = new_module_names.begin(); newm != new_module_names.end(); newm++)
 555                         {
 556                                 if (*newm == *oldm)
 557                                         removed = false;
 558                         }
 559                         if (removed)
 560                                 removed_modules.push_back(*oldm);
 561                 }
 562                 // now we have added_modules, a vector of modules to be loaded, and removed_modules, a vector of modules
 563                 // to be removed.
 564                 int rem = 0, add = 0;
 565                 if (!removed_modules.empty())
 566                 for (std::vector<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 567                 {
 568                         if (UnloadModule(removing->c_str()))
 569                         {
 570                                 WriteOpers("*** REHASH UNLOADED MODULE: %s",removing->c_str());
 571                                 WriteServ(user->fd,"973 %s %s :Module %s successfully unloaded.",user->nick, removing->c_str(), removing->c_str());
 572                                 rem++;
 573                         }
 574                         else
 575                         {
 576                                 WriteServ(user->fd,"972 %s %s :Failed to unload module %s: %s",user->nick, removing->c_str(), removing->c_str(), ModuleError());
 577                         }
 578                 }
 579                 if (!added_modules.empty())
 580                 for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 581                 {
 582                         if (LoadModule(adding->c_str()))
 583                         {
 584                                 WriteOpers("*** REHASH LOADED MODULE: %s",adding->c_str());
 585                                 WriteServ(user->fd,"975 %s %s :Module %s successfully loaded.",user->nick, adding->c_str(), adding->c_str());
 586                                 add++;
 587                         }
 588                         else
 589                         {
 590                                 WriteServ(user->fd,"974 %s %s :Failed to load module %s: %s",user->nick, adding->c_str(), adding->c_str(), ModuleError());
 591                         }
 592                 }
 593                 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());
 594         }
 595 }
 596
 597 /* write formatted text to a socket, in same format as printf
 598  * New in 1.0 Beta 5 - Nothing is written directly to a users fd any more.
 599  * Instead, data builds up in the users sendq and each time around the mainloop
 600  * this data is flushed to the user's socket (see userrec::FlushWriteBuf).
 601  */
 602
 603 void Write(int sock,char *text, ...)
 604 {
 605         if (sock < 0)
 606                 return;
 607         if (!text)
 608         {
 609                 log(DEFAULT,"*** BUG *** Write was given an invalid parameter");
 610                 return;
 611         }
 612         char textbuffer[MAXBUF];
 613         va_list argsPtr;
 614         char tb[MAXBUF];
 615         int res;
 616
 617         va_start (argsPtr, text);
 618         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 619         va_end(argsPtr);
 620         int bytes = snprintf(tb,MAXBUF,"%s\r\n",textbuffer);
 621         chop(tb);
 622         if (fd_ref_table[sock])
 623         {
 624                 int MOD_RESULT = 0;
 625                 FOREACH_RESULT(OnRawSocketWrite(sock,tb,bytes));
 626                 fd_ref_table[sock]->AddWriteBuf(tb);
 627                 statsSent += bytes;
 628         }
 629         else log(DEFAULT,"ERROR! attempted write to a user with no fd_ref_table entry!!!");
 630 }
 631
 632 /* write a server formatted numeric response to a single socket */
 633
 634 void WriteServ(int sock, char* text, ...)
 635 {
 636         if (sock < 0)
 637                 return;
 638         if (!text)
 639         {
 640                 log(DEFAULT,"*** BUG *** WriteServ was given an invalid parameter");
 641                 return;
 642         }
 643         char textbuffer[MAXBUF],tb[MAXBUF];
 644         int res;
 645         va_list argsPtr;
 646         va_start (argsPtr, text);
 647
 648         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 649         va_end(argsPtr);
 650         int bytes = snprintf(tb,MAXBUF,":%s %s\r\n",ServerName,textbuffer);
 651         chop(tb);
 652         if (fd_ref_table[sock])
 653         {
 654                 int MOD_RESULT = 0;
 655                 FOREACH_RESULT(OnRawSocketWrite(sock,tb,bytes));
 656                 fd_ref_table[sock]->AddWriteBuf(tb);
 657                 statsSent += bytes;
 658         }
 659         else log(DEFAULT,"ERROR! attempted write to a user with no fd_ref_table entry!!!");
 660 }
 661
 662 /* write text from an originating user to originating user */
 663
 664 void WriteFrom(int sock, userrec *user,char* text, ...)
 665 {
 666         if (sock < 0)
 667                 return;
 668         if ((!text) || (!user))
 669         {
 670                 log(DEFAULT,"*** BUG *** WriteFrom was given an invalid parameter");
 671                 return;
 672         }
 673         char textbuffer[MAXBUF],tb[MAXBUF];
 674         va_list argsPtr;
 675         int res;
 676         va_start (argsPtr, text);
 677
 678         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 679         va_end(argsPtr);
 680         int bytes = snprintf(tb,MAXBUF,":%s!%s@%s %s\r\n",user->nick,user->ident,user->dhost,textbuffer);
 681         chop(tb);
 682         if (fd_ref_table[sock])
 683         {
 684                 int MOD_RESULT = 0;
 685                 FOREACH_RESULT(OnRawSocketWrite(sock,tb,bytes));
 686                 fd_ref_table[sock]->AddWriteBuf(tb);
 687                 statsSent += bytes;
 688         }
 689         else log(DEFAULT,"ERROR! attempted write to a user with no fd_ref_table entry!!!");
 690 }
 691
 692 /* write text to an destination user from a source user (e.g. user privmsg) */
 693
 694 void WriteTo(userrec *source, userrec *dest,char *data, ...)
 695 {
 696         if ((!dest) || (!data))
 697         {
 698                 log(DEFAULT,"*** BUG *** WriteTo was given an invalid parameter");
 699                 return;
 700         }
 701         if (dest->fd == FD_MAGIC_NUMBER)
 702                 return;
 703         char textbuffer[MAXBUF],tb[MAXBUF];
 704         va_list argsPtr;
 705         va_start (argsPtr, data);
 706         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
 707         va_end(argsPtr);
 708         chop(tb);
 709
 710         // if no source given send it from the server.
 711         if (!source)
 712         {
 713                 WriteServ(dest->fd,":%s %s",ServerName,textbuffer);
 714         }
 715         else
 716         {
 717                 WriteFrom(dest->fd,source,"%s",textbuffer);
 718         }
 719 }
 720
 721 /* write formatted text from a source user to all users on a channel
 722  * including the sender (NOT for privmsg, notice etc!) */
 723
 724 void WriteChannel(chanrec* Ptr, userrec* user, char* text, ...)
 725 {
 726         if ((!Ptr) || (!user) || (!text))
 727         {
 728                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 729                 return;
 730         }
 731         char textbuffer[MAXBUF];
 732         va_list argsPtr;
 733         va_start (argsPtr, text);
 734         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 735         va_end(argsPtr);
 736
 737         std::vector<char*> *ulist = Ptr->GetUsers();
 738         for (int j = 0; j < ulist->size(); j++)
 739         {
 740                 char* o = (*ulist)[j];
 741                 userrec* otheruser = (userrec*)o;
 742                 if (otheruser->fd != FD_MAGIC_NUMBER)
 743                         WriteTo(user,otheruser,"%s",textbuffer);
 744         }
 745 }
 746
 747 /* write formatted text from a source user to all users on a channel
 748  * including the sender (NOT for privmsg, notice etc!) doesnt send to
 749  * users on remote servers */
 750
 751 void WriteChannelLocal(chanrec* Ptr, userrec* user, char* text, ...)
 752 {
 753         if ((!Ptr) || (!text))
 754         {
 755                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 756                 return;
 757         }
 758         char textbuffer[MAXBUF];
 759         va_list argsPtr;
 760         va_start (argsPtr, text);
 761         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 762         va_end(argsPtr);
 763
 764         std::vector<char*> *ulist = Ptr->GetUsers();
 765         for (int j = 0; j < ulist->size(); j++)
 766         {
 767                 char* o = (*ulist)[j];
 768                 userrec* otheruser = (userrec*)o;
 769                 if ((otheruser->fd != FD_MAGIC_NUMBER) && (otheruser->fd != -1) && (otheruser != user))
 770                 {
 771                         if (!user)
 772                         {
 773                                 WriteServ(otheruser->fd,"%s",textbuffer);
 774                         }
 775                         else
 776                         {
 777                                 WriteTo(user,otheruser,"%s",textbuffer);
 778                         }
 779                 }
 780         }
 781 }
 782
 783
 784 void WriteChannelWithServ(char* ServName, chanrec* Ptr, char* text, ...)
 785 {
 786         if ((!Ptr) || (!text))
 787         {
 788                 log(DEFAULT,"*** BUG *** WriteChannelWithServ was given an invalid parameter");
 789                 return;
 790         }
 791         char textbuffer[MAXBUF];
 792         va_list argsPtr;
 793         va_start (argsPtr, text);
 794         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 795         va_end(argsPtr);
 796
 797
 798         std::vector<char*> *ulist = Ptr->GetUsers();
 799         for (int j = 0; j < ulist->size(); j++)
 800         {
 801                 char* o = (*ulist)[j];
 802                 userrec* otheruser = (userrec*)o;
 803                 if (otheruser->fd != FD_MAGIC_NUMBER)
 804                         WriteServ(otheruser->fd,"%s",textbuffer);
 805         }
 806 }
 807
 808
 809 /* write formatted text from a source user to all users on a channel except
 810  * for the sender (for privmsg etc) */
 811
 812 void ChanExceptSender(chanrec* Ptr, userrec* user, char* text, ...)
 813 {
 814         if ((!Ptr) || (!user) || (!text))
 815         {
 816                 log(DEFAULT,"*** BUG *** ChanExceptSender was given an invalid parameter");
 817                 return;
 818         }
 819         char textbuffer[MAXBUF];
 820         va_list argsPtr;
 821         va_start (argsPtr, text);
 822         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 823         va_end(argsPtr);
 824
 825         std::vector<char*> *ulist = Ptr->GetUsers();
 826         for (int j = 0; j < ulist->size(); j++)
 827         {
 828                 char* o = (*ulist)[j];
 829                 userrec* otheruser = (userrec*)o;
 830                 if ((otheruser->fd != FD_MAGIC_NUMBER) && (user != otheruser))
 831                         WriteFrom(otheruser->fd,user,"%s",textbuffer);
 832         }
 833 }
 834
 835
 836 std::string GetServerDescription(char* servername)
 837 {
 838         for (int j = 0; j < 32; j++)
 839         {
 840                 if (me[j] != NULL)
 841                 {
 842                         for (int k = 0; k < me[j]->connectors.size(); k++)
 843                         {
 844                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),servername))
 845                                 {
 846                                         return me[j]->connectors[k].GetDescription();
 847                                 }
 848                         }
 849                 }
 850                 return ServerDesc; // not a remote server that can be found, it must be me.
 851         }
 852 }
 853
 854
 855 /* write a formatted string to all users who share at least one common
 856  * channel, including the source user e.g. for use in NICK */
 857
 858 void WriteCommon(userrec *u, char* text, ...)
 859 {
 860         if (!u)
 861         {
 862                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 863                 return;
 864         }
 865
 866         if (u->registered != 7) {
 867                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 868                 return;
 869         }
 870
 871         char textbuffer[MAXBUF];
 872         va_list argsPtr;
 873         va_start (argsPtr, text);
 874         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 875         va_end(argsPtr);
 876
 877         // FIX: Stops a message going to the same person more than once
 878         bzero(&already_sent,65536);
 879
 880         bool sent_to_at_least_one = false;
 881
 882         for (int i = 0; i < MAXCHANS; i++)
 883         {
 884                 if (u->chans[i].channel)
 885                 {
 886                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 887                         for (int j = 0; j < ulist->size(); j++)
 888                         {
 889                                 char* o = (*ulist)[j];
 890                                 userrec* otheruser = (userrec*)o;
 891                                 if ((otheruser->fd > 0) && (!already_sent[otheruser->fd]))
 892                                 {
 893                                         already_sent[otheruser->fd] = 1;
 894                                         WriteFrom(otheruser->fd,u,"%s",textbuffer);
 895                                         sent_to_at_least_one = true;
 896                                 }
 897                         }
 898                 }
 899         }
 900         // if the user was not in any channels, no users will receive the text. Make sure the user
 901         // receives their OWN message for WriteCommon
 902         if (!sent_to_at_least_one)
 903         {
 904                 WriteFrom(u->fd,u,"%s",textbuffer);
 905         }
 906 }
 907
 908 /* write a formatted string to all users who share at least one common
 909  * channel, NOT including the source user e.g. for use in QUIT */
 910
 911 void WriteCommonExcept(userrec *u, char* text, ...)
 912 {
 913         if (!u)
 914         {
 915                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 916                 return;
 917         }
 918
 919         if (u->registered != 7) {
 920                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 921                 return;
 922         }
 923
 924         char textbuffer[MAXBUF];
 925         va_list argsPtr;
 926         va_start (argsPtr, text);
 927         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 928         va_end(argsPtr);
 929
 930         bzero(&already_sent,65536);
 931
 932         for (int i = 0; i < MAXCHANS; i++)
 933         {
 934                 if (u->chans[i].channel)
 935                 {
 936                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 937                         for (int j = 0; j < ulist->size(); j++)
 938                         {
 939                                 char* o = (*ulist)[j];
 940                                 userrec* otheruser = (userrec*)o;
 941                                 if (u != otheruser)
 942                                 {
 943                                         if ((otheruser->fd > 0) && (!already_sent[otheruser->fd]))
 944                                         {
 945                                                 already_sent[otheruser->fd] = 1;
 946                                                 WriteFrom(otheruser->fd,u,"%s",textbuffer);
 947                                         }
 948                                 }
 949                         }
 950                 }
 951         }
 952 }
 953
 954 void WriteOpers(char* text, ...)
 955 {
 956         if (!text)
 957         {
 958                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 959                 return;
 960         }
 961
 962         char textbuffer[MAXBUF];
 963         va_list argsPtr;
 964         va_start (argsPtr, text);
 965         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 966         va_end(argsPtr);
 967
 968         for (std::vector<userrec*>::iterator i = all_opers.begin(); i != all_opers.end(); i++)
 969         {
 970                 userrec* a = *i;
 971                 if ((a) && (a->fd != FD_MAGIC_NUMBER))
 972                 {
 973                         if (strchr(a->modes,'s'))
 974                         {
 975                                 // send server notices to all with +s
 976                                 WriteServ(a->fd,"NOTICE %s :%s",a->nick,textbuffer);
 977                         }
 978                 }
 979         }
 980 }
 981
 982 void NoticeAllOpers(userrec *source, bool local_only, char* text, ...)
 983 {
 984         if ((!text) || (!source))
 985         {
 986                 log(DEFAULT,"*** BUG *** NoticeAllOpers was given an invalid parameter");
 987                 return;
 988         }
 989
 990         char textbuffer[MAXBUF];
 991         va_list argsPtr;
 992         va_start (argsPtr, text);
 993         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 994         va_end(argsPtr);
 995
 996         for (std::vector<userrec*>::iterator i = all_opers.begin(); i != all_opers.end(); i++)
 997         {
 998                 userrec* a = *i;
 999                 if ((a) && (a->fd != FD_MAGIC_NUMBER))
1000                 {
1001                         if (strchr(a->modes,'s'))
1002                         {
1003                                 // send server notices to all with +s
1004                                 WriteServ(a->fd,"NOTICE %s :*** Notice From %s: %s",a->nick,source->nick,textbuffer);
1005                         }
1006                 }
1007         }
1008
1009         if (!local_only)
1010         {
1011                 char buffer[MAXBUF];
1012                 snprintf(buffer,MAXBUF,"V %s @* :%s",source->nick,textbuffer);
1013                 NetSendToAll(buffer);
1014         }
1015 }
1016
1017 // returns TRUE of any users on channel C occupy server 'servername'.
1018
1019 bool ChanAnyOnThisServer(chanrec *c,char* servername)
1020 {
1021         log(DEBUG,"ChanAnyOnThisServer");
1022
1023         std::vector<char*> *ulist = c->GetUsers();
1024         for (int j = 0; j < ulist->size(); j++)
1025         {
1026                 char* o = (*ulist)[j];
1027                 userrec* user = (userrec*)o;
1028                 if (!strcasecmp(user->server,servername))
1029                         return true;
1030         }
1031         return false;
1032 }
1033
1034 // returns true if user 'u' shares any common channels with any users on server 'servername'
1035
1036 bool CommonOnThisServer(userrec* u,const char* servername)
1037 {
1038         log(DEBUG,"ChanAnyOnThisServer");
1039
1040         for (int i = 0; i < MAXCHANS; i++)
1041         {
1042                 if (u->chans[i].channel)
1043                 {
1044                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
1045                         for (int j = 0; j < ulist->size(); j++)
1046                         {
1047                                 char* o = (*ulist)[j];
1048                                 userrec* user = (userrec*)o;
1049                                 if (!strcasecmp(user->server,servername))
1050                                         return true;
1051                         }
1052                 }
1053         }
1054         return false;
1055 }
1056
1057
1058 void NetSendToCommon(userrec* u, char* s)
1059 {
1060         char buffer[MAXBUF];
1061         snprintf(buffer,MAXBUF,"%s",s);
1062
1063         log(DEBUG,"NetSendToCommon: '%s' '%s'",u->nick,s);
1064
1065         std::string msg = buffer;
1066         FOREACH_MOD OnPacketTransmit(msg,s);
1067         strlcpy(buffer,msg.c_str(),MAXBUF);
1068
1069         for (int j = 0; j < 32; j++)
1070         {
1071                 if (me[j] != NULL)
1072                 {
1073                         for (int k = 0; k < me[j]->connectors.size(); k++)
1074                         {
1075                                 if (CommonOnThisServer(u,me[j]->connectors[k].GetServerName().c_str()))
1076                                 {
1077                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1078                                 }
1079                         }
1080                 }
1081         }
1082 }
1083
1084
1085 void NetSendToAll(char* s)
1086 {
1087         char buffer[MAXBUF];
1088         snprintf(buffer,MAXBUF,"%s",s);
1089
1090         log(DEBUG,"NetSendToAll: '%s'",s);
1091
1092         std::string msg = buffer;
1093         FOREACH_MOD OnPacketTransmit(msg,s);
1094         strlcpy(buffer,msg.c_str(),MAXBUF);
1095
1096         for (int j = 0; j < 32; j++)
1097         {
1098                 if (me[j] != NULL)
1099                 {
1100                         for (int k = 0; k < me[j]->connectors.size(); k++)
1101                         {
1102                                 me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1103                         }
1104                 }
1105         }
1106 }
1107
1108 void NetSendToAllAlive(char* s)
1109 {
1110         char buffer[MAXBUF];
1111         snprintf(buffer,MAXBUF,"%s",s);
1112
1113         log(DEBUG,"NetSendToAllAlive: '%s'",s);
1114
1115         std::string msg = buffer;
1116         FOREACH_MOD OnPacketTransmit(msg,s);
1117         strlcpy(buffer,msg.c_str(),MAXBUF);
1118
1119         for (int j = 0; j < 32; j++)
1120         {
1121                 if (me[j] != NULL)
1122                 {
1123                         for (int k = 0; k < me[j]->connectors.size(); k++)
1124                         {
1125                                 if (me[j]->connectors[k].GetState() != STATE_DISCONNECTED)
1126                                 {
1127                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1128                                 }
1129                                 else
1130                                 {
1131                                         log(DEBUG,"%s is dead, not sending to it.",me[j]->connectors[k].GetServerName().c_str());
1132                                 }
1133                         }
1134                 }
1135         }
1136 }
1137
1138
1139 void NetSendToOne(char* target,char* s)
1140 {
1141         char buffer[MAXBUF];
1142         snprintf(buffer,MAXBUF,"%s",s);
1143
1144         log(DEBUG,"NetSendToOne: '%s' '%s'",target,s);
1145
1146         std::string msg = buffer;
1147         FOREACH_MOD OnPacketTransmit(msg,s);
1148         strlcpy(buffer,msg.c_str(),MAXBUF);
1149
1150         for (int j = 0; j < 32; j++)
1151         {
1152                 if (me[j] != NULL)
1153                 {
1154                         for (int k = 0; k < me[j]->connectors.size(); k++)
1155                         {
1156                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1157                                 {
1158                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1159                                 }
1160                         }
1161                 }
1162         }
1163 }
1164
1165 void NetSendToAllExcept(const char* target,char* s)
1166 {
1167         char buffer[MAXBUF];
1168         snprintf(buffer,MAXBUF,"%s",s);
1169
1170         log(DEBUG,"NetSendToAllExcept: '%s' '%s'",target,s);
1171
1172         std::string msg = buffer;
1173         FOREACH_MOD OnPacketTransmit(msg,s);
1174         strlcpy(buffer,msg.c_str(),MAXBUF);
1175
1176         for (int j = 0; j < 32; j++)
1177         {
1178                 if (me[j] != NULL)
1179                 {
1180                         for (int k = 0; k < me[j]->connectors.size(); k++)
1181                         {
1182                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1183                                 {
1184                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1185                                 }
1186                         }
1187                 }
1188         }
1189 }
1190
1191
1192 void WriteMode(const char* modes, int flags, const char* text, ...)
1193 {
1194         if ((!text) || (!modes) || (!flags))
1195         {
1196                 log(DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
1197                 return;
1198         }
1199
1200         char textbuffer[MAXBUF];
1201         va_list argsPtr;
1202         va_start (argsPtr, text);
1203         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1204         va_end(argsPtr);
1205         int modelen = strlen(modes);
1206
1207         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1208         {
1209                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1210                 {
1211                         bool send_to_user = false;
1212
1213                         if (flags == WM_AND)
1214                         {
1215                                 send_to_user = true;
1216                                 for (int n = 0; n < modelen; n++)
1217                                 {
1218                                         if (!hasumode(i->second,modes[n]))
1219                                         {
1220                                                 send_to_user = false;
1221                                                 break;
1222                                         }
1223                                 }
1224                         }
1225                         else if (flags == WM_OR)
1226                         {
1227                                 send_to_user = false;
1228                                 for (int n = 0; n < modelen; n++)
1229                                 {
1230                                         if (hasumode(i->second,modes[n]))
1231                                         {
1232                                                 send_to_user = true;
1233                                                 break;
1234                                         }
1235                                 }
1236                         }
1237
1238                         if (send_to_user)
1239                         {
1240                                 WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
1241                         }
1242                 }
1243         }
1244 }
1245
1246
1247 void NoticeAll(userrec *source, bool local_only, char* text, ...)
1248 {
1249         if ((!text) || (!source))
1250         {
1251                 log(DEFAULT,"*** BUG *** NoticeAll was given an invalid parameter");
1252                 return;
1253         }
1254
1255         char textbuffer[MAXBUF];
1256         va_list argsPtr;
1257         va_start (argsPtr, text);
1258         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1259         va_end(argsPtr);
1260
1261         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1262         {
1263                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1264                 {
1265                         WriteFrom(i->second->fd,source,"NOTICE $* :%s",textbuffer);
1266                 }
1267         }
1268
1269         if (!local_only)
1270         {
1271                 char buffer[MAXBUF];
1272                 snprintf(buffer,MAXBUF,"V %s * :%s",source->nick,textbuffer);
1273                 NetSendToAll(buffer);
1274         }
1275
1276 }
1277
1278 void WriteWallOps(userrec *source, bool local_only, char* text, ...)
1279 {
1280         if ((!text) || (!source))
1281         {
1282                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
1283                 return;
1284         }
1285
1286         char textbuffer[MAXBUF];
1287         va_list argsPtr;
1288         va_start (argsPtr, text);
1289         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1290         va_end(argsPtr);
1291
1292         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1293         {
1294                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1295                 {
1296                         if (strchr(i->second->modes,'w'))
1297                         {
1298                                 WriteTo(source,i->second,"WALLOPS :%s",textbuffer);
1299                         }
1300                 }
1301         }
1302
1303         if (!local_only)
1304         {
1305                 char buffer[MAXBUF];
1306                 snprintf(buffer,MAXBUF,"@ %s :%s",source->nick,textbuffer);
1307                 NetSendToAll(buffer);
1308         }
1309 }
1310
1311 /* convert a string to lowercase. Note following special circumstances
1312  * taken from RFC 1459. Many "official" server branches still hold to this
1313  * rule so i will too;
1314  *
1315  *  Because of IRC's scandanavian origin, the characters {}| are
1316  *  considered to be the lower case equivalents of the characters []\,
1317  *  respectively. This is a critical issue when determining the
1318  *  equivalence of two nicknames.
1319  */
1320
1321 void strlower(char *n)
1322 {
1323         if (n)
1324         {
1325                 for (char* t = n; *t; t++)
1326                         *t = lowermap[*t];
1327         }
1328 }
1329
1330
1331
1332 /* Find a user record by nickname and return a pointer to it */
1333
1334 userrec* Find(std::string nick)
1335 {
1336         user_hash::iterator iter = clientlist.find(nick);
1337
1338         if (iter == clientlist.end())
1339                 /* Couldn't find it */
1340                 return NULL;
1341
1342         return iter->second;
1343 }
1344
1345 /* find a channel record by channel name and return a pointer to it */
1346
1347 chanrec* FindChan(const char* chan)
1348 {
1349         if (!chan)
1350         {
1351                 log(DEFAULT,"*** BUG *** Findchan was given an invalid parameter");
1352                 return NULL;
1353         }
1354
1355         chan_hash::iterator iter = chanlist.find(chan);
1356
1357         if (iter == chanlist.end())
1358                 /* Couldn't find it */
1359                 return NULL;
1360
1361         return iter->second;
1362 }
1363
1364
1365 long GetMaxBans(char* name)
1366 {
1367         char CM[MAXBUF];
1368         for (int count = 0; count < ConfValueEnum("banlist",&config_f); count++)
1369         {
1370                 ConfValue("banlist","chan",count,CM,&config_f);
1371                 if (match(name,CM))
1372                 {
1373                         ConfValue("banlist","limit",count,CM,&config_f);
1374                         return atoi(CM);
1375                 }
1376         }
1377         return 64;
1378 }
1379
1380
1381 void purge_empty_chans(userrec* u)
1382 {
1383
1384         int go_again = 1, purge = 0;
1385
1386         // firstly decrement the count on each channel
1387         for (int f = 0; f < MAXCHANS; f++)
1388         {
1389                 if (u->chans[f].channel)
1390                 {
1391                         u->chans[f].channel->DelUser((char*)u);
1392                 }
1393         }
1394
1395         for (int i = 0; i < MAXCHANS; i++)
1396         {
1397                 if (u->chans[i].channel)
1398                 {
1399                         if (!usercount(u->chans[i].channel))
1400                         {
1401                                 chan_hash::iterator i2 = chanlist.find(u->chans[i].channel->name);
1402                                 /* kill the record */
1403                                 if (i2 != chanlist.end())
1404                                 {
1405                                         log(DEBUG,"del_channel: destroyed: %s",i2->second->name);
1406                                         if (i2->second)
1407                                                 delete i2->second;
1408                                         chanlist.erase(i2);
1409                                         go_again = 1;
1410                                         purge++;
1411                                         u->chans[i].channel = NULL;
1412                                 }
1413                         }
1414                         else
1415                         {
1416                                 log(DEBUG,"skipped purge for %s",u->chans[i].channel->name);
1417                         }
1418                 }
1419         }
1420         log(DEBUG,"completed channel purge, killed %lu",(unsigned long)purge);
1421
1422         DeleteOper(u);
1423 }
1424
1425
1426 char scratch[MAXBUF];
1427 char sparam[MAXBUF];
1428
1429 char* chanmodes(chanrec *chan)
1430 {
1431         if (!chan)
1432         {
1433                 log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
1434                 strcpy(scratch,"");
1435                 return scratch;
1436         }
1437
1438         strcpy(scratch,"");
1439         strcpy(sparam,"");
1440         if (chan->noexternal)
1441         {
1442                 strlcat(scratch,"n",MAXMODES);
1443         }
1444         if (chan->topiclock)
1445         {
1446                 strlcat(scratch,"t",MAXMODES);
1447         }
1448         if (chan->key[0])
1449         {
1450                 strlcat(scratch,"k",MAXMODES);
1451         }
1452         if (chan->limit)
1453         {
1454                 strlcat(scratch,"l",MAXMODES);
1455         }
1456         if (chan->inviteonly)
1457         {
1458                 strlcat(scratch,"i",MAXMODES);
1459         }
1460         if (chan->moderated)
1461         {
1462                 strlcat(scratch,"m",MAXMODES);
1463         }
1464         if (chan->secret)
1465         {
1466                 strlcat(scratch,"s",MAXMODES);
1467         }
1468         if (chan->c_private)
1469         {
1470                 strlcat(scratch,"p",MAXMODES);
1471         }
1472         if (chan->key[0])
1473         {
1474                 strlcat(sparam," ",MAXBUF);
1475                 strlcat(sparam,chan->key,MAXBUF);
1476         }
1477         if (chan->limit)
1478         {
1479                 char foo[24];
1480                 sprintf(foo," %lu",(unsigned long)chan->limit);
1481                 strlcat(sparam,foo,MAXBUF);
1482         }
1483         if (*chan->custom_modes)
1484         {
1485                 strlcat(scratch,chan->custom_modes,MAXMODES);
1486                 for (int z = 0; chan->custom_modes[z] != 0; z++)
1487                 {
1488                         std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
1489                         if (extparam != "")
1490                         {
1491                                 strlcat(sparam," ",MAXBUF);
1492                                 strlcat(sparam,extparam.c_str(),MAXBUF);
1493                         }
1494                 }
1495         }
1496         log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam);
1497         strlcat(scratch,sparam,MAXMODES);
1498         return scratch;
1499 }
1500
1501
1502 /* compile a userlist of a channel into a string, each nick seperated by
1503  * spaces and op, voice etc status shown as @ and + */
1504
1505 void userlist(userrec *user,chanrec *c)
1506 {
1507         if ((!c) || (!user))
1508         {
1509                 log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
1510                 return;
1511         }
1512
1513         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1514
1515         std::vector<char*> *ulist = c->GetUsers();
1516         for (int i = 0; i < ulist->size(); i++)
1517         {
1518                 char* o = (*ulist)[i];
1519                 userrec* otheruser = (userrec*)o;
1520                 if ((!has_channel(user,c)) && (strchr(otheruser->modes,'i')))
1521                 {
1522                         /* user is +i, and source not on the channel, does not show
1523                          * nick in NAMES list */
1524                         continue;
1525                 }
1526                 strlcat(list,cmode(otheruser,c),MAXBUF);
1527                 strlcat(list,otheruser->nick,MAXBUF);
1528                 strlcat(list," ",MAXBUF);
1529                 if (strlen(list)>(480-NICKMAX))
1530                 {
1531                         /* list overflowed into
1532                          * multiple numerics */
1533                         WriteServ(user->fd,"%s",list);
1534                         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1535                 }
1536         }
1537         /* if whats left in the list isnt empty, send it */
1538         if (list[strlen(list)-1] != ':')
1539         {
1540                 WriteServ(user->fd,"%s",list);
1541         }
1542 }
1543
1544 /* return a count of the users on a specific channel accounting for
1545  * invisible users who won't increase the count. e.g. for /LIST */
1546
1547 int usercount_i(chanrec *c)
1548 {
1549         int count = 0;
1550
1551         if (!c)
1552         {
1553                 log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
1554                 return 0;
1555         }
1556
1557         strcpy(list,"");
1558         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1559         {
1560                 if (i->second)
1561                 {
1562                         if (has_channel(i->second,c))
1563                         {
1564                                 if (isnick(i->second->nick))
1565                                 {
1566                                         if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1567                                         {
1568                                                 /* user is +i, and source not on the channel, does not show
1569                                                  * nick in NAMES list */
1570                                                 continue;
1571                                         }
1572                                         count++;
1573                                 }
1574                         }
1575                 }
1576         }
1577         log(DEBUG,"usercount_i: %s %lu",c->name,(unsigned long)count);
1578         return count;
1579 }
1580
1581
1582 int usercount(chanrec *c)
1583 {
1584         if (!c)
1585         {
1586                 log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
1587                 return 0;
1588         }
1589         int count = c->GetUserCounter();
1590         log(DEBUG,"usercount: %s %lu",c->name,(unsigned long)count);
1591         return count;
1592 }
1593
1594
1595 /* add a channel to a user, creating the record for it if needed and linking
1596  * it to the user record */
1597
1598 chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
1599 {
1600         if ((!user) || (!cn))
1601         {
1602                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
1603                 return 0;
1604         }
1605
1606         chanrec* Ptr;
1607         int created = 0;
1608         char cname[MAXBUF];
1609
1610         strncpy(cname,cn,MAXBUF);
1611
1612         // we MUST declare this wherever we use FOREACH_RESULT
1613         int MOD_RESULT = 0;
1614
1615         if (strlen(cname) > CHANMAX-1)
1616         {
1617                 cname[CHANMAX-1] = '\0';
1618         }
1619
1620         log(DEBUG,"add_channel: %s %s",user->nick,cname);
1621
1622         if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
1623         {
1624                 return NULL; // already on the channel!
1625         }
1626
1627
1628         if (!FindChan(cname))
1629         {
1630                 MOD_RESULT = 0;
1631                 FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
1632                 if (MOD_RESULT == 1) {
1633                         return NULL;
1634                 }
1635
1636                 /* create a new one */
1637                 log(DEBUG,"add_channel: creating: %s",cname);
1638                 {
1639                         chanlist[cname] = new chanrec();
1640
1641                         strlcpy(chanlist[cname]->name, cname,CHANMAX);
1642                         chanlist[cname]->topiclock = 1;
1643                         chanlist[cname]->noexternal = 1;
1644                         chanlist[cname]->created = TIME;
1645                         strcpy(chanlist[cname]->topic, "");
1646                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
1647                         chanlist[cname]->topicset = 0;
1648                         Ptr = chanlist[cname];
1649                         log(DEBUG,"add_channel: created: %s",cname);
1650                         /* set created to 2 to indicate user
1651                          * is the first in the channel
1652                          * and should be given ops */
1653                         created = 2;
1654                 }
1655         }
1656         else
1657         {
1658                 /* channel exists, just fish out a pointer to its struct */
1659                 Ptr = FindChan(cname);
1660                 if (Ptr)
1661                 {
1662                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
1663
1664                         // the override flag allows us to bypass channel modes
1665                         // and bans (used by servers)
1666                         if ((!override) || (!strcasecmp(user->server,ServerName)))
1667                         {
1668                                 log(DEBUG,"Not overriding...");
1669                                 MOD_RESULT = 0;
1670                                 FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
1671                                 if (MOD_RESULT == 1) {
1672                                         return NULL;
1673                                 }
1674                                 log(DEBUG,"MOD_RESULT=%d",MOD_RESULT);
1675
1676                                 if (!MOD_RESULT)
1677                                 {
1678                                         log(DEBUG,"add_channel: checking key, invite, etc");
1679                                         MOD_RESULT = 0;
1680                                         FOREACH_RESULT(OnCheckKey(user, Ptr, key ? key : ""));
1681                                         if (MOD_RESULT == 0)
1682                                         {
1683                                                 if (Ptr->key[0])
1684                                                 {
1685                                                         log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
1686                                                         if (!key)
1687                                                         {
1688                                                                 log(DEBUG,"add_channel: no key given in JOIN");
1689                                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
1690                                                                 return NULL;
1691                                                         }
1692                                                         else
1693                                                         {
1694                                                                 if (strcasecmp(key,Ptr->key))
1695                                                                 {
1696                                                                         log(DEBUG,"add_channel: bad key given in JOIN");
1697                                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
1698                                                                         return NULL;
1699                                                                 }
1700                                                         }
1701                                                 }
1702                                                 log(DEBUG,"add_channel: no key");
1703                                         }
1704                                         MOD_RESULT = 0;
1705                                         FOREACH_RESULT(OnCheckInvite(user, Ptr));
1706                                         if (MOD_RESULT == 0)
1707                                         {
1708                                                 if (Ptr->inviteonly)
1709                                                 {
1710                                                         log(DEBUG,"add_channel: channel is +i");
1711                                                         if (user->IsInvited(Ptr->name))
1712                                                         {
1713                                                                 /* user was invited to channel */
1714                                                                 /* there may be an optional channel NOTICE here */
1715                                                         }
1716                                                         else
1717                                                         {
1718                                                                 WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
1719                                                                 return NULL;
1720                                                         }
1721                                                 }
1722                                                 log(DEBUG,"add_channel: channel is not +i");
1723                                         }
1724                                         MOD_RESULT = 0;
1725                                         FOREACH_RESULT(OnCheckLimit(user, Ptr));
1726                                         if (MOD_RESULT == 0)
1727                                         {
1728                                                 if (Ptr->limit)
1729                                                 {
1730                                                         if (usercount(Ptr) >= Ptr->limit)
1731                                                         {
1732                                                                 WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
1733                                                                 return NULL;
1734                                                         }
1735                                                 }
1736                                         }
1737                                         log(DEBUG,"add_channel: about to walk banlist");
1738                                         MOD_RESULT = 0;
1739                                         FOREACH_RESULT(OnCheckBan(user, Ptr));
1740                                         if (MOD_RESULT == 0)
1741                                         {
1742                                                 /* check user against the channel banlist */
1743                                                 if (Ptr)
1744                                                 {
1745                                                         if (Ptr->bans.size())
1746                                                         {
1747                                                                 for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1748                                                                 {
1749                                                                         if (match(user->GetFullHost(),i->data))
1750                                                                         {
1751                                                                                 WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
1752                                                                                 return NULL;
1753                                                                         }
1754                                                                 }
1755                                                         }
1756                                                 }
1757                                                 log(DEBUG,"add_channel: bans checked");
1758                                         }
1759
1760                                 }
1761
1762
1763                                 if ((Ptr) && (user))
1764                                 {
1765                                         user->RemoveInvite(Ptr->name);
1766                                 }
1767
1768                                 log(DEBUG,"add_channel: invites removed");
1769
1770                         }
1771                         else
1772                         {
1773                                 log(DEBUG,"Overridden checks");
1774                         }
1775
1776
1777                 }
1778                 created = 1;
1779         }
1780
1781         log(DEBUG,"Passed channel checks");
1782
1783         for (int index =0; index != MAXCHANS; index++)
1784         {
1785                 log(DEBUG,"Check location %d",index);
1786                 if (user->chans[index].channel == NULL)
1787                 {
1788                         log(DEBUG,"Adding into their channel list at location %d",index);
1789
1790                         if (created == 2)
1791                         {
1792                                 /* first user in is given ops */
1793                                 user->chans[index].uc_modes = UCMODE_OP;
1794                         }
1795                         else
1796                         {
1797                                 user->chans[index].uc_modes = 0;
1798                         }
1799                         user->chans[index].channel = Ptr;
1800                         Ptr->IncUserCounter();
1801                         Ptr->AddUser((char*)user);
1802                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
1803
1804                         if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it.
1805                         {
1806                                 // use the stamdard J token with no privilages.
1807                                 char buffer[MAXBUF];
1808                                 if (created == 2)
1809                                 {
1810                                         snprintf(buffer,MAXBUF,"J %s @%s",user->nick,Ptr->name);
1811                                 }
1812                                 else
1813                                 {
1814                                         snprintf(buffer,MAXBUF,"J %s %s",user->nick,Ptr->name);
1815                                 }
1816                                 NetSendToAll(buffer);
1817                         }
1818
1819                         log(DEBUG,"Sent JOIN to client");
1820
1821                         if (Ptr->topicset)
1822                         {
1823                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
1824                                 WriteServ(user->fd,"333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
1825                         }
1826                         userlist(user,Ptr);
1827                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
1828                         //WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
1829                         //WriteServ(user->fd,"329 %s %s %lu", user->nick, Ptr->name, (unsigned long)Ptr->created);
1830                         FOREACH_MOD OnUserJoin(user,Ptr);
1831                         return Ptr;
1832                 }
1833         }
1834         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
1835         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
1836         return NULL;
1837 }
1838
1839 /* remove a channel from a users record, and remove the record from memory
1840  * if the channel has become empty */
1841
1842 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
1843 {
1844         if ((!user) || (!cname))
1845         {
1846                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
1847                 return NULL;
1848         }
1849
1850         chanrec* Ptr;
1851
1852         if ((!cname) || (!user))
1853         {
1854                 return NULL;
1855         }
1856
1857         Ptr = FindChan(cname);
1858
1859         if (!Ptr)
1860         {
1861                 return NULL;
1862         }
1863
1864         FOREACH_MOD OnUserPart(user,Ptr);
1865         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
1866
1867         for (int i =0; i != MAXCHANS; i++)
1868         {
1869                 /* zap it from the channel list of the user */
1870                 if (user->chans[i].channel == Ptr)
1871                 {
1872                         if (reason)
1873                         {
1874                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
1875
1876                                 if (!local)
1877                                 {
1878                                         char buffer[MAXBUF];
1879                                         snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason);
1880                                         NetSendToAll(buffer);
1881                                 }
1882
1883
1884                         }
1885                         else
1886                         {
1887                                 if (!local)
1888                                 {
1889                                         char buffer[MAXBUF];
1890                                         snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name);
1891                                         NetSendToAll(buffer);
1892                                 }
1893
1894                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
1895                         }
1896                         user->chans[i].uc_modes = 0;
1897                         user->chans[i].channel = NULL;
1898                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1899                         break;
1900                 }
1901         }
1902
1903         Ptr->DelUser((char*)user);
1904
1905         /* if there are no users left on the channel */
1906         if (!usercount(Ptr))
1907         {
1908                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1909
1910                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1911
1912                 /* kill the record */
1913                 if (iter != chanlist.end())
1914                 {
1915                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1916                         delete Ptr;
1917                         chanlist.erase(iter);
1918                 }
1919         }
1920 }
1921
1922
1923 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
1924 {
1925         if ((!src) || (!user) || (!Ptr) || (!reason))
1926         {
1927                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
1928                 return;
1929         }
1930
1931         if ((!Ptr) || (!user) || (!src))
1932         {
1933                 return;
1934         }
1935
1936         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
1937
1938         if (!has_channel(user,Ptr))
1939         {
1940                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
1941                 return;
1942         }
1943
1944         int MOD_RESULT = 0;
1945         FOREACH_RESULT(OnAccessCheck(src,user,Ptr,AC_KICK));
1946         if (MOD_RESULT == ACR_DENY)
1947                 return;
1948
1949         if (MOD_RESULT == ACR_DEFAULT)
1950         {
1951                 if (((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) && (!is_uline(src->server)))
1952                 {
1953                         if (cstatus(src,Ptr) == STATUS_HOP)
1954                         {
1955                                 WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
1956                         }
1957                         else
1958                         {
1959                                 WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
1960                         }
1961
1962                         return;
1963                 }
1964         }
1965
1966         MOD_RESULT = 0;
1967         FOREACH_RESULT(OnUserPreKick(src,user,Ptr,reason));
1968         if (MOD_RESULT)
1969                 return;
1970
1971         FOREACH_MOD OnUserKick(src,user,Ptr,reason);
1972
1973         for (int i =0; i != MAXCHANS; i++)
1974         {
1975                 /* zap it from the channel list of the user */
1976                 if (user->chans[i].channel)
1977                 if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
1978                 {
1979                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
1980                         user->chans[i].uc_modes = 0;
1981                         user->chans[i].channel = NULL;
1982                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1983                         break;
1984                 }
1985         }
1986
1987         Ptr->DelUser((char*)user);
1988
1989         /* if there are no users left on the channel */
1990         if (!usercount(Ptr))
1991         {
1992                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1993
1994                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1995
1996                 /* kill the record */
1997                 if (iter != chanlist.end())
1998                 {
1999                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
2000                         delete Ptr;
2001                         chanlist.erase(iter);
2002                 }
2003         }
2004 }
2005
2006
2007
2008
2009 /* This function pokes and hacks at a parameter list like the following:
2010  *
2011  * PART #winbot,#darkgalaxy :m00!
2012  *
2013  * to turn it into a series of individual calls like this:
2014  *
2015  * PART #winbot :m00!
2016  * PART #darkgalaxy :m00!
2017  *
2018  * The seperate calls are sent to a callback function provided by the caller
2019  * (the caller will usually call itself recursively). The callback function
2020  * must be a command handler. Calling this function on a line with no list causes
2021  * no action to be taken. You must provide a starting and ending parameter number
2022  * where the range of the list can be found, useful if you have a terminating
2023  * parameter as above which is actually not part of the list, or parameters
2024  * before the actual list as well. This code is used by many functions which
2025  * can function as "one to list" (see the RFC) */
2026
2027 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
2028 {
2029         char plist[MAXBUF];
2030         char *param;
2031         char *pars[32];
2032         char blog[32][MAXBUF];
2033         char blog2[32][MAXBUF];
2034         int j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
2035         char keystr[MAXBUF];
2036         char moo[MAXBUF];
2037
2038         for (int i = 0; i <32; i++)
2039                 strcpy(blog[i],"");
2040
2041         for (int i = 0; i <32; i++)
2042                 strcpy(blog2[i],"");
2043
2044         strcpy(moo,"");
2045         for (int i = 0; i <10; i++)
2046         {
2047                 if (!parameters[i])
2048                 {
2049                         parameters[i] = moo;
2050                 }
2051         }
2052         if (joins)
2053         {
2054                 if (pcnt > 1) /* we have a key to copy */
2055                 {
2056                         strlcpy(keystr,parameters[1],MAXBUF);
2057                 }
2058         }
2059
2060         if (!parameters[start])
2061         {
2062                 return 0;
2063         }
2064         if (!strchr(parameters[start],','))
2065         {
2066                 return 0;
2067         }
2068         strcpy(plist,"");
2069         for (int i = start; i <= end; i++)
2070         {
2071                 if (parameters[i])
2072                 {
2073                         strlcat(plist,parameters[i],MAXBUF);
2074                 }
2075         }
2076
2077         j = 0;
2078         param = plist;
2079
2080         t = strlen(plist);
2081         for (int i = 0; i < t; i++)
2082         {
2083                 if (plist[i] == ',')
2084                 {
2085                         plist[i] = '\0';
2086                         strlcpy(blog[j++],param,MAXBUF);
2087                         param = plist+i+1;
2088                         if (j>20)
2089                         {
2090                                 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
2091                                 return 1;
2092                         }
2093                 }
2094         }
2095         strlcpy(blog[j++],param,MAXBUF);
2096         total = j;
2097
2098         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
2099         {
2100                 strcat(keystr,",");
2101         }
2102
2103         if ((joins) && (keystr))
2104         {
2105                 if (strchr(keystr,','))
2106                 {
2107                         j = 0;
2108                         param = keystr;
2109                         t2 = strlen(keystr);
2110                         for (int i = 0; i < t2; i++)
2111                         {
2112                                 if (keystr[i] == ',')
2113                                 {
2114                                         keystr[i] = '\0';
2115                                         strlcpy(blog2[j++],param,MAXBUF);
2116                                         param = keystr+i+1;
2117                                 }
2118                         }
2119                         strlcpy(blog2[j++],param,MAXBUF);
2120                         total2 = j;
2121                 }
2122         }
2123
2124         for (j = 0; j < total; j++)
2125         {
2126                 if (blog[j])
2127                 {
2128                         pars[0] = blog[j];
2129                 }
2130                 for (q = end; q < pcnt-1; q++)
2131                 {
2132                         if (parameters[q+1])
2133                         {
2134                                 pars[q-end+1] = parameters[q+1];
2135                         }
2136                 }
2137                 if ((joins) && (parameters[1]))
2138                 {
2139                         if (pcnt > 1)
2140                         {
2141                                 pars[1] = blog2[j];
2142                         }
2143                         else
2144                         {
2145                                 pars[1] = NULL;
2146                         }
2147                 }
2148                 /* repeatedly call the function with the hacked parameter list */
2149                 if ((joins) && (pcnt > 1))
2150                 {
2151                         if (pars[1])
2152                         {
2153                                 // pars[1] already set up and containing key from blog2[j]
2154                                 fn(pars,2,u);
2155                         }
2156                         else
2157                         {
2158                                 pars[1] = parameters[1];
2159                                 fn(pars,2,u);
2160                         }
2161                 }
2162                 else
2163                 {
2164                         fn(pars,pcnt-(end-start),u);
2165                 }
2166         }
2167
2168         return 1;
2169 }
2170
2171
2172
2173 void kill_link(userrec *user,const char* r)
2174 {
2175         user_hash::iterator iter = clientlist.find(user->nick);
2176
2177         char reason[MAXBUF];
2178
2179         strncpy(reason,r,MAXBUF);
2180
2181         if (strlen(reason)>MAXQUIT)
2182         {
2183                 reason[MAXQUIT-1] = '\0';
2184         }
2185
2186         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2187         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2188         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
2189
2190         if (user->registered == 7) {
2191                 FOREACH_MOD OnUserQuit(user);
2192                 WriteCommonExcept(user,"QUIT :%s",reason);
2193
2194                 // Q token must go to ALL servers!!!
2195                 char buffer[MAXBUF];
2196                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2197                 NetSendToAll(buffer);
2198         }
2199
2200         FOREACH_MOD OnUserDisconnect(user);
2201
2202         if (user->fd > -1)
2203         {
2204                 FOREACH_MOD OnRawSocketClose(user->fd);
2205 #ifdef USE_KQUEUE
2206                 struct kevent ke;
2207                 EV_SET(&ke, user->fd, EVFILT_READ, EV_DELETE, 0, 0, NULL);
2208                 int i = kevent(kq, &ke, 1, 0, 0, NULL);
2209                 if (i == -1)
2210                 {
2211                         log(DEBUG,"kqueue: Failed to remove user from queue!");
2212                 }
2213 #endif
2214                 shutdown(user->fd,2);
2215                 close(user->fd);
2216         }
2217
2218         if (user->registered == 7) {
2219                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
2220                 AddWhoWas(user);
2221         }
2222
2223         if (user->registered == 7) {
2224                 purge_empty_chans(user);
2225         }
2226
2227         if (iter != clientlist.end())
2228         {
2229                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
2230                 if (user->fd > -1)
2231                         fd_ref_table[user->fd] = NULL;
2232                 delete user;
2233                 clientlist.erase(iter);
2234         }
2235 }
2236
2237 void kill_link_silent(userrec *user,const char* r)
2238 {
2239         user_hash::iterator iter = clientlist.find(user->nick);
2240
2241         char reason[MAXBUF];
2242
2243         strncpy(reason,r,MAXBUF);
2244
2245         if (strlen(reason)>MAXQUIT)
2246         {
2247                 reason[MAXQUIT-1] = '\0';
2248         }
2249
2250         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2251         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2252         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
2253
2254         if (user->registered == 7) {
2255                 FOREACH_MOD OnUserQuit(user);
2256                 WriteCommonExcept(user,"QUIT :%s",reason);
2257
2258                 // Q token must go to ALL servers!!!
2259                 char buffer[MAXBUF];
2260                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2261                 NetSendToAll(buffer);
2262         }
2263
2264         FOREACH_MOD OnUserDisconnect(user);
2265
2266         if (user->fd > -1)
2267         {
2268                 FOREACH_MOD OnRawSocketClose(user->fd);
2269 #ifdef USE_KQUEUE
2270                 struct kevent ke;
2271                 EV_SET(&ke, user->fd, EVFILT_READ, EV_DELETE, 0, 0, NULL);
2272                 int i = kevent(kq, &ke, 1, 0, 0, NULL);
2273                 if (i == -1)
2274                 {
2275                         log(DEBUG,"kqueue: Failed to remove user from queue!");
2276                 }
2277 #endif
2278                 shutdown(user->fd,2);
2279                 close(user->fd);
2280         }
2281
2282         if (user->registered == 7) {
2283                 purge_empty_chans(user);
2284         }
2285
2286         if (iter != clientlist.end())
2287         {
2288                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
2289                 if (user->fd > -1)
2290                         fd_ref_table[user->fd] = NULL;
2291                 delete user;
2292                 clientlist.erase(iter);
2293         }
2294 }
2295
2296
2297
2298 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
2299
2300 char* Passwd(userrec *user)
2301 {
2302         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2303         {
2304                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
2305                 {
2306                         return i->pass;
2307                 }
2308         }
2309         return "";
2310 }
2311
2312 bool IsDenied(userrec *user)
2313 {
2314         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2315         {
2316                 if (match(user->host,i->host) && (i->type == CC_DENY))
2317                 {
2318                         return true;
2319                 }
2320         }
2321         return false;
2322 }
2323
2324
2325
2326
2327 /* sends out an error notice to all connected clients (not to be used
2328  * lightly!) */
2329
2330 void send_error(char *s)
2331 {
2332         log(DEBUG,"send_error: %s",s);
2333         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2334         {
2335                 if (isnick(i->second->nick))
2336                 {
2337                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
2338                 }
2339                 else
2340                 {
2341                         // fix - unregistered connections receive ERROR, not NOTICE
2342                         Write(i->second->fd,"ERROR :%s",s);
2343                 }
2344         }
2345 }
2346
2347 void Error(int status)
2348 {
2349         signal (SIGALRM, SIG_IGN);
2350         signal (SIGPIPE, SIG_IGN);
2351         signal (SIGTERM, SIG_IGN);
2352         signal (SIGABRT, SIG_IGN);
2353         signal (SIGSEGV, SIG_IGN);
2354         signal (SIGURG, SIG_IGN);
2355         signal (SIGKILL, SIG_IGN);
2356         log(DEFAULT,"*** fell down a pothole in the road to perfection ***");
2357         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
2358         Exit(status);
2359 }
2360
2361
2362 int main(int argc, char** argv)
2363 {
2364         Start();
2365         srand(time(NULL));
2366         log(DEBUG,"*** InspIRCd starting up!");
2367         if (!FileExists(CONFIG_FILE))
2368         {
2369                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
2370                 log(DEFAULT,"main: no config");
2371                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
2372                 Exit(ERROR);
2373         }
2374         if (argc > 1) {
2375                 for (int i = 1; i < argc; i++)
2376                 {
2377                         if (!strcmp(argv[i],"-nofork")) {
2378                                 nofork = true;
2379                         }
2380                         if (!strcmp(argv[i],"-wait")) {
2381                                 sleep(6);
2382                         }
2383                         if (!strcmp(argv[i],"-nolimit")) {
2384                                 unlimitcore = true;
2385                         }
2386                 }
2387         }
2388         strlcpy(MyExecutable,argv[0],MAXBUF);
2389
2390         // initialize the lowercase mapping table
2391         for (int cn = 0; cn < 256; cn++)
2392                 lowermap[cn] = cn;
2393         // lowercase the uppercase chars
2394         for (int cn = 65; cn < 91; cn++)
2395                 lowermap[cn] = tolower(cn);
2396         // now replace the specific chars for scandanavian comparison
2397         lowermap['['] = '{';
2398         lowermap[']'] = '}';
2399         lowermap['\\'] = '|';
2400
2401         if (InspIRCd(argv,argc) == ERROR)
2402         {
2403                 log(DEFAULT,"main: daemon function bailed");
2404                 printf("ERROR: could not initialise. Shutting down.\n");
2405                 Exit(ERROR);
2406         }
2407         Exit(TRUE);
2408         return 0;
2409 }
2410
2411 template<typename T> inline string ConvToStr(const T &in)
2412 {
2413         stringstream tmp;
2414         if (!(tmp << in)) return string();
2415         return tmp.str();
2416 }
2417
2418 /* re-allocates a nick in the user_hash after they change nicknames,
2419  * returns a pointer to the new user as it may have moved */
2420
2421 userrec* ReHashNick(char* Old, char* New)
2422 {
2423         //user_hash::iterator newnick;
2424         user_hash::iterator oldnick = clientlist.find(Old);
2425
2426         log(DEBUG,"ReHashNick: %s %s",Old,New);
2427
2428         if (!strcasecmp(Old,New))
2429         {
2430                 log(DEBUG,"old nick is new nick, skipping");
2431                 return oldnick->second;
2432         }
2433
2434         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
2435
2436         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
2437
2438         clientlist[New] = new userrec();
2439         clientlist[New] = oldnick->second;
2440         clientlist.erase(oldnick);
2441
2442         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
2443
2444         return clientlist[New];
2445 }
2446
2447 /* adds or updates an entry in the whowas list */
2448 void AddWhoWas(userrec* u)
2449 {
2450         user_hash::iterator iter = whowas.find(u->nick);
2451         userrec *a = new userrec();
2452         strlcpy(a->nick,u->nick,NICKMAX);
2453         strlcpy(a->ident,u->ident,64);
2454         strlcpy(a->dhost,u->dhost,256);
2455         strlcpy(a->host,u->host,256);
2456         strlcpy(a->fullname,u->fullname,128);
2457         strlcpy(a->server,u->server,256);
2458         a->signon = u->signon;
2459
2460         /* MAX_WHOWAS:   max number of /WHOWAS items
2461          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
2462          *               can be replaced by a newer one
2463          */
2464
2465         if (iter == whowas.end())
2466         {
2467                 if (whowas.size() == WHOWAS_MAX)
2468                 {
2469                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
2470                         {
2471                                 // 3600 seconds in an hour ;)
2472                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
2473                                 {
2474                                         if (i->second) delete i->second;
2475                                         i->second = a;
2476                                         log(DEBUG,"added WHOWAS entry, purged an old record");
2477                                         return;
2478                                 }
2479                         }
2480                 }
2481                 else
2482                 {
2483                         log(DEBUG,"added fresh WHOWAS entry");
2484                         whowas[a->nick] = a;
2485                 }
2486         }
2487         else
2488         {
2489                 log(DEBUG,"updated WHOWAS entry");
2490                 if (iter->second) delete iter->second;
2491                 iter->second = a;
2492         }
2493 }
2494
2495
2496 /* add a client connection to the sockets list */
2497 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
2498 {
2499         string tempnick;
2500         char tn2[MAXBUF];
2501         user_hash::iterator iter;
2502
2503         tempnick = ConvToStr(socket) + "-unknown";
2504         sprintf(tn2,"%lu-unknown",(unsigned long)socket);
2505
2506         iter = clientlist.find(tempnick);
2507
2508         // fix by brain.
2509         // as these nicknames are 'RFC impossible', we can be sure nobody is going to be
2510         // using one as a registered connection. As theyre per fd, we can also safely assume
2511         // that we wont have collisions. Therefore, if the nick exists in the list, its only
2512         // used by a dead socket, erase the iterator so that the new client may reclaim it.
2513         // this was probably the cause of 'server ignores me when i hammer it with reconnects'
2514         // issue in earlier alphas/betas
2515         if (iter != clientlist.end())
2516         {
2517                 clientlist.erase(iter);
2518         }
2519
2520         /*
2521          * It is OK to access the value here this way since we know
2522          * it exists, we just created it above.
2523          *
2524          * At NO other time should you access a value in a map or a
2525          * hash_map this way.
2526          */
2527         clientlist[tempnick] = new userrec();
2528
2529         NonBlocking(socket);
2530         log(DEBUG,"AddClient: %lu %s %d %s",(unsigned long)socket,host,port,ip);
2531
2532         clientlist[tempnick]->fd = socket;
2533         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
2534         strncpy(clientlist[tempnick]->host, host,160);
2535         strncpy(clientlist[tempnick]->dhost, host,160);
2536         strncpy(clientlist[tempnick]->server, ServerName,256);
2537         strncpy(clientlist[tempnick]->ident, "unknown",12);
2538         clientlist[tempnick]->registered = 0;
2539         clientlist[tempnick]->signon = TIME+dns_timeout;
2540         clientlist[tempnick]->lastping = 1;
2541         clientlist[tempnick]->port = port;
2542         strncpy(clientlist[tempnick]->ip,ip,32);
2543
2544         // set the registration timeout for this user
2545         unsigned long class_regtimeout = 90;
2546         int class_flood = 0;
2547         long class_threshold = 5;
2548         long class_sqmax = 262144;      // 256kb
2549         long class_rqmax = 4096;        // 4k
2550
2551         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2552         {
2553                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2554                 {
2555                         class_regtimeout = (unsigned long)i->registration_timeout;
2556                         class_flood = i->flood;
2557                         clientlist[tempnick]->pingmax = i->pingtime;
2558                         class_threshold = i->threshold;
2559                         class_sqmax = i->sendqmax;
2560                         class_rqmax = i->recvqmax;
2561                         break;
2562                 }
2563         }
2564
2565         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax+dns_timeout;
2566         clientlist[tempnick]->timeout = TIME+class_regtimeout;
2567         clientlist[tempnick]->flood = class_flood;
2568         clientlist[tempnick]->threshold = class_threshold;
2569         clientlist[tempnick]->sendqmax = class_sqmax;
2570         clientlist[tempnick]->recvqmax = class_rqmax;
2571
2572         for (int i = 0; i < MAXCHANS; i++)
2573         {
2574                 clientlist[tempnick]->chans[i].channel = NULL;
2575                 clientlist[tempnick]->chans[i].uc_modes = 0;
2576         }
2577
2578         if (clientlist.size() == MAXCLIENTS)
2579         {
2580                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
2581                 return;
2582         }
2583
2584         // this is done as a safety check to keep the file descriptors within range of fd_ref_table.
2585         // its a pretty big but for the moment valid assumption:
2586         // file descriptors are handed out starting at 0, and are recycled as theyre freed.
2587         // therefore if there is ever an fd over 65535, 65536 clients must be connected to the
2588         // irc server at once (or the irc server otherwise initiating this many connections, files etc)
2589         // which for the time being is a physical impossibility (even the largest networks dont have more
2590         // than about 10,000 users on ONE server!)
2591         if (socket > 65535)
2592         {
2593                 kill_link(clientlist[tempnick],"Server is full");
2594                 return;
2595         }
2596
2597
2598         char* e = matches_exception(ip);
2599         if (!e)
2600         {
2601                 char* r = matches_zline(ip);
2602                 if (r)
2603                 {
2604                         char reason[MAXBUF];
2605                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
2606                         kill_link(clientlist[tempnick],reason);
2607                         return;
2608                 }
2609         }
2610         fd_ref_table[socket] = clientlist[tempnick];
2611
2612 #ifdef USE_KQUEUE
2613         struct kevent ke;
2614         log(DEBUG,"kqueue: Add user to events, kq=%d socket=%d",kq,socket);
2615         EV_SET(&ke, socket, EVFILT_READ, EV_ADD, 0, 0, NULL);
2616         int i = kevent(kq, &ke, 1, 0, 0, NULL);
2617         if (i == -1)
2618         {
2619                 switch (errno)
2620                 {
2621                         case EACCES:
2622                                 log(DEBUG,"kqueue: EACCES");
2623                         break;
2624                         case EFAULT:
2625                                 log(DEBUG,"kqueue: EFAULT");
2626                         break;
2627                         case EBADF:
2628                                 log(DEBUG,"kqueue: EBADF=%d",ke.ident);
2629                         break;
2630                         case EINTR:
2631                                 log(DEBUG,"kqueue: EINTR");
2632                         break;
2633                         case EINVAL:
2634                                 log(DEBUG,"kqueue: EINVAL");
2635                         break;
2636                         case ENOENT:
2637                                 log(DEBUG,"kqueue: ENOENT");
2638                         break;
2639                         case ENOMEM:
2640                                 log(DEBUG,"kqueue: ENOMEM");
2641                         break;
2642                         case ESRCH:
2643                                 log(DEBUG,"kqueue: ESRCH");
2644                         break;
2645                         default:
2646                                 log(DEBUG,"kqueue: UNKNOWN!");
2647                         break;
2648                 }
2649                 log(DEBUG,"kqueue: Failed to add user to queue!");
2650         }
2651
2652 #endif
2653 }
2654
2655 // this function counts all users connected, wether they are registered or NOT.
2656 int usercnt(void)
2657 {
2658         return clientlist.size();
2659 }
2660
2661 // this counts only registered users, so that the percentages in /MAP don't mess up when users are sitting in an unregistered state
2662 int registered_usercount(void)
2663 {
2664         int c = 0;
2665         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2666         {
2667                 if ((i->second->fd) && (isnick(i->second->nick))) c++;
2668         }
2669         return c;
2670 }
2671
2672 int usercount_invisible(void)
2673 {
2674         int c = 0;
2675
2676         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2677         {
2678                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
2679         }
2680         return c;
2681 }
2682
2683 int usercount_opers(void)
2684 {
2685         int c = 0;
2686
2687         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2688         {
2689                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
2690         }
2691         return c;
2692 }
2693
2694 int usercount_unknown(void)
2695 {
2696         int c = 0;
2697
2698         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2699         {
2700                 if ((i->second->fd) && (i->second->registered != 7))
2701                         c++;
2702         }
2703         return c;
2704 }
2705
2706 long chancount(void)
2707 {
2708         return chanlist.size();
2709 }
2710
2711 long count_servs(void)
2712 {
2713         int c = 0;
2714         for (int i = 0; i < 32; i++)
2715         {
2716                 if (me[i] != NULL)
2717                 {
2718                         for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2719                         {
2720                                 if (strcasecmp(j->GetServerName().c_str(),ServerName))
2721                                 {
2722                                         c++;
2723                                 }
2724                         }
2725                 }
2726         }
2727         return c;
2728 }
2729
2730 long servercount(void)
2731 {
2732         return count_servs()+1;
2733 }
2734
2735 long local_count()
2736 {
2737         int c = 0;
2738         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2739         {
2740                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
2741         }
2742         return c;
2743 }
2744
2745
2746 void ShowMOTD(userrec *user)
2747 {
2748         char buf[65536];
2749         std::string WholeMOTD = "";
2750         if (!MOTD.size())
2751         {
2752                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
2753                 return;
2754         }
2755         snprintf(buf,65535,":%s 375 %s :- %s message of the day\r\n", ServerName, user->nick, ServerName);
2756         WholeMOTD = WholeMOTD + buf;
2757         for (int i = 0; i != MOTD.size(); i++)
2758         {
2759                 snprintf(buf,65535,":%s 372 %s :- %s\r\n", ServerName, user->nick, MOTD[i].c_str());
2760                 WholeMOTD = WholeMOTD + buf;
2761         }
2762         snprintf(buf,65535,":%s 376 %s :End of message of the day.\r\n", ServerName, user->nick);
2763         WholeMOTD = WholeMOTD + buf;
2764         // only one write operation
2765         user->AddWriteBuf(WholeMOTD);
2766         statsSent += WholeMOTD.length();
2767 }
2768
2769 void ShowRULES(userrec *user)
2770 {
2771         if (!RULES.size())
2772         {
2773                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
2774                 return;
2775         }
2776         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
2777         for (int i = 0; i != RULES.size(); i++)
2778         {
2779                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
2780         }
2781         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
2782 }
2783
2784 /* shows the message of the day, and any other on-logon stuff */
2785 void FullConnectUser(userrec* user)
2786 {
2787         statsConnects++;
2788         user->idle_lastmsg = TIME;
2789         log(DEBUG,"ConnectUser: %s",user->nick);
2790
2791         if ((strcmp(Passwd(user),"")) && (!user->haspassed))
2792         {
2793                 kill_link(user,"Invalid password");
2794                 return;
2795         }
2796         if (IsDenied(user))
2797         {
2798                 kill_link(user,"Unauthorised connection");
2799                 return;
2800         }
2801
2802         char match_against[MAXBUF];
2803         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
2804         char* e = matches_exception(match_against);
2805         if (!e)
2806         {
2807                 char* r = matches_gline(match_against);
2808                 if (r)
2809                 {
2810                         char reason[MAXBUF];
2811                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
2812                         kill_link_silent(user,reason);
2813                         return;
2814                 }
2815                 r = matches_kline(user->host);
2816                 if (r)
2817                 {
2818                         char reason[MAXBUF];
2819                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
2820                         kill_link_silent(user,reason);
2821                         return;
2822                 }
2823         }
2824
2825         // fix by brain: move this below the xline checks to prevent spurious quits going onto the net that dont belong
2826         user->registered = 7;
2827
2828         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
2829         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
2830         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
2831         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
2832         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
2833         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
2834         std::stringstream v;
2835         v << "MESHED WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
2836         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
2837         v << " TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 CHANMODES=ohvb,k,l,psmnti NETWORK=";
2838         v << Network;
2839         std::string data005 = v.str();
2840         FOREACH_MOD On005Numeric(data005);
2841         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
2842         // so i'd better split it :)
2843         std::stringstream out(data005);
2844         std::string token = "";
2845         std::string line5 = "";
2846         int token_counter = 0;
2847         while (!out.eof())
2848         {
2849                 out >> token;
2850                 line5 = line5 + token + " ";
2851                 token_counter++;
2852                 if ((token_counter >= 13) || (out.eof() == true))
2853                 {
2854                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
2855                         line5 = "";
2856                         token_counter = 0;
2857                 }
2858         }
2859         ShowMOTD(user);
2860
2861         char buffer[MAXBUF];
2862         snprintf(buffer,MAXBUF,"N %lu %s %s %s %s +%s %s %s :%s",(unsigned long)user->age,user->nick,user->host,user->dhost,user->ident,user->modes,user->ip,ServerName,user->fullname);
2863         NetSendToAll(buffer);
2864
2865         // fix by brain: these should be AFTER the N token, so other servers know what the HELL we're on about... :)
2866         FOREACH_MOD OnUserConnect(user);
2867         WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,user->ip);
2868 }
2869
2870
2871 // this returns 1 when all modules are satisfied that the user should be allowed onto the irc server
2872 // (until this returns true, a user will block in the waiting state, waiting to connect up to the
2873 // registration timeout maximum seconds)
2874 bool AllModulesReportReady(userrec* user)
2875 {
2876         for (int i = 0; i <= MODCOUNT; i++)
2877         {
2878                 int res = modules[i]->OnCheckReady(user);
2879                         if (!res)
2880                                 return false;
2881         }
2882         return true;
2883 }
2884
2885 /* shows the message of the day, and any other on-logon stuff */
2886 void ConnectUser(userrec *user)
2887 {
2888         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
2889         if ((user->dns_done) && (user->registered >= 3) && (AllModulesReportReady(user)))
2890         {
2891                 FullConnectUser(user);
2892         }
2893 }
2894
2895 std::string GetVersionString()
2896 {
2897         char Revision[] = "$Revision$";
2898         char versiondata[MAXBUF];
2899         char *s1 = Revision;
2900         char *savept;
2901         char *v2 = strtok_r(s1," ",&savept);
2902         s1 = savept;
2903         v2 = strtok_r(s1," ",&savept);
2904         s1 = savept;
2905 #ifdef USE_KQUEUE
2906         char socketengine[] = "kqueue";
2907 #else
2908         char socketengine[] = "select";
2909 #endif
2910         snprintf(versiondata,MAXBUF,"%s Rev. %s %s :%s (O=%lu) [SE=%s]",VERSION,v2,ServerName,SYSTEM,(unsigned long)OPTIMISATION,socketengine);
2911         return versiondata;
2912 }
2913
2914 void handle_version(char **parameters, int pcnt, userrec *user)
2915 {
2916         if (!pcnt)
2917         {
2918                 WriteServ(user->fd,"351 %s :%s",user->nick,GetVersionString().c_str());
2919         }
2920         else
2921         {
2922                 if (!strcmp(parameters[0],"*"))
2923                 {
2924                         for (int j = 0; j < 32; j++)
2925                         {
2926                                 if (me[j] != NULL)
2927                                 {
2928                                         for (int x = 0; x < me[j]->connectors.size(); x++)
2929                                         {
2930                                                 WriteServ(user->fd,"351 %s :Server %d:%d (%s): %s",user->nick,j,x,me[j]->connectors[x].GetServerName().c_str(),me[j]->connectors[x].GetVersionString().c_str());
2931                                         }
2932                                 }
2933                         }
2934                         return;
2935                 }
2936                 if (match(ServerName,parameters[0]))
2937                 {
2938                         WriteServ(user->fd,"351 %s :%s",user->nick,GetVersionString().c_str());
2939                         return;
2940                 }
2941                 bool displayed = false, found = false;
2942                 for (int j = 0; j < 32; j++)
2943                 {
2944                         if (me[j] != NULL)
2945                         {
2946                                 for (int x = 0; x < me[j]->connectors.size(); x++)
2947                                 {
2948                                         if (match(me[j]->connectors[x].GetServerName().c_str(),parameters[0]))
2949                                         {
2950                                                 found = true;
2951                                                 if ((me[j]->connectors[x].GetVersionString() != "") && (!displayed))
2952                                                 {
2953                                                         displayed = true;
2954                                                         WriteServ(user->fd,"351 %s :%s",user->nick,me[j]->connectors[x].GetVersionString().c_str());
2955                                                 }
2956                                         }
2957                                 }
2958                         }
2959                 }
2960                 if ((!displayed) && (found))
2961                 {
2962                         WriteServ(user->fd,"402 %s %s :Server %s has no version information",user->nick,parameters[0],parameters[0]);
2963                         return;
2964                 }
2965                 if (!found)
2966                 {
2967                         WriteServ(user->fd,"402 %s %s :No such server",user->nick,parameters[0]);
2968                 }
2969         }
2970         return;
2971 }
2972
2973
2974 // calls a handler function for a command
2975
2976 void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
2977 {
2978                 for (int i = 0; i < cmdlist.size(); i++)
2979                 {
2980                         if (!strcasecmp(cmdlist[i].command,commandname))
2981                         {
2982                                 if (cmdlist[i].handler_function)
2983                                 {
2984                                         if (pcnt>=cmdlist[i].min_params)
2985                                         {
2986                                                 if (strchr(user->modes,cmdlist[i].flags_needed))
2987                                                 {
2988                                                         cmdlist[i].handler_function(parameters,pcnt,user);
2989                                                 }
2990                                         }
2991                                 }
2992                         }
2993                 }
2994 }
2995
2996 void DoSplitEveryone()
2997 {
2998         bool go_again = true;
2999         while (go_again)
3000         {
3001                 go_again = false;
3002                 for (int i = 0; i < 32; i++)
3003                 {
3004                         if (me[i] != NULL)
3005                         {
3006                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3007                                 {
3008                                         if (strcasecmp(j->GetServerName().c_str(),ServerName))
3009                                         {
3010                                                 j->routes.clear();
3011                                                 j->CloseConnection();
3012                                                 me[i]->connectors.erase(j);
3013                                                 go_again = true;
3014                                                 break;
3015                                         }
3016                                 }
3017                         }
3018                 }
3019         }
3020         log(DEBUG,"Removed server. Will remove clients...");
3021         // iterate through the userlist and remove all users on this server.
3022         // because we're dealing with a mesh, we dont have to deal with anything
3023         // "down-route" from this server (nice huh)
3024         go_again = true;
3025         char reason[MAXBUF];
3026         while (go_again)
3027         {
3028                 go_again = false;
3029                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3030                 {
3031                         if (strcasecmp(u->second->server,ServerName))
3032                         {
3033                                 snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server);
3034                                 kill_link(u->second,reason);
3035                                 go_again = true;
3036                                 break;
3037                         }
3038                 }
3039         }
3040 }
3041
3042
3043
3044 char islast(const char* s)
3045 {
3046         char c = '`';
3047         for (int j = 0; j < 32; j++)
3048         {
3049                 if (me[j] != NULL)
3050                 {
3051                         for (int k = 0; k < me[j]->connectors.size(); k++)
3052                         {
3053                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
3054                                 {
3055                                         c = '|';
3056                                 }
3057                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
3058                                 {
3059                                         c = '`';
3060                                 }
3061                         }
3062                 }
3063         }
3064         return c;
3065 }
3066
3067 long map_count(const char* s)
3068 {
3069         int c = 0;
3070         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
3071         {
3072                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
3073         }
3074         return c;
3075 }
3076
3077
3078 void force_nickchange(userrec* user,const char* newnick)
3079 {
3080         char nick[MAXBUF];
3081         int MOD_RESULT = 0;
3082
3083         strcpy(nick,"");
3084
3085         FOREACH_RESULT(OnUserPreNick(user,newnick));
3086         if (MOD_RESULT) {
3087                 statsCollisions++;
3088                 kill_link(user,"Nickname collision");
3089                 return;
3090         }
3091         if (matches_qline(newnick))
3092         {
3093                 statsCollisions++;
3094                 kill_link(user,"Nickname collision");
3095                 return;
3096         }
3097
3098         if (user)
3099         {
3100                 if (newnick)
3101                 {
3102                         strncpy(nick,newnick,MAXBUF);
3103                 }
3104                 if (user->registered == 7)
3105                 {
3106                         char* pars[1];
3107                         pars[0] = nick;
3108                         handle_nick(pars,1,user);
3109                 }
3110         }
3111 }
3112
3113
3114 int process_parameters(char **command_p,char *parameters)
3115 {
3116         int j = 0;
3117         int q = strlen(parameters);
3118         if (!q)
3119         {
3120                 /* no parameters, command_p invalid! */
3121                 return 0;
3122         }
3123         if (parameters[0] == ':')
3124         {
3125                 command_p[0] = parameters+1;
3126                 return 1;
3127         }
3128         if (q)
3129         {
3130                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
3131                 {
3132                         /* only one parameter */
3133                         command_p[0] = parameters;
3134                         if (parameters[0] == ':')
3135                         {
3136                                 if (strchr(parameters,' ') != NULL)
3137                                 {
3138                                         command_p[0]++;
3139                                 }
3140                         }
3141                         return 1;
3142                 }
3143         }
3144         command_p[j++] = parameters;
3145         for (int i = 0; i <= q; i++)
3146         {
3147                 if (parameters[i] == ' ')
3148                 {
3149                         command_p[j++] = parameters+i+1;
3150                         parameters[i] = '\0';
3151                         if (command_p[j-1][0] == ':')
3152                         {
3153                                 *command_p[j-1]++; /* remove dodgy ":" */
3154                                 break;
3155                                 /* parameter like this marks end of the sequence */
3156                         }
3157                 }
3158         }
3159         return j; /* returns total number of items in the list */
3160 }
3161
3162 void process_command(userrec *user, char* cmd)
3163 {
3164         char *parameters;
3165         char *command;
3166         char *command_p[127];
3167         char p[MAXBUF], temp[MAXBUF];
3168         int j, items, cmd_found;
3169
3170         for (int i = 0; i < 127; i++)
3171                 command_p[i] = NULL;
3172
3173         if (!user)
3174         {
3175                 return;
3176         }
3177         if (!cmd)
3178         {
3179                 return;
3180         }
3181         if (!cmd[0])
3182         {
3183                 return;
3184         }
3185
3186         int total_params = 0;
3187         if (strlen(cmd)>2)
3188         {
3189                 for (int q = 0; q < strlen(cmd)-1; q++)
3190                 {
3191                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
3192                         {
3193                                 total_params++;
3194                                 // found a 'trailing', we dont count them after this.
3195                                 break;
3196                         }
3197                         if (cmd[q] == ' ')
3198                                 total_params++;
3199                 }
3200         }
3201
3202         // another phidjit bug...
3203         if (total_params > 126)
3204         {
3205                 *(strchr(cmd,' ')) = '\0';
3206                 WriteServ(user->fd,"421 %s %s :Too many parameters given",user->nick,cmd);
3207                 return;
3208         }
3209
3210         strlcpy(temp,cmd,MAXBUF);
3211
3212         std::string tmp = cmd;
3213         for (int i = 0; i <= MODCOUNT; i++)
3214         {
3215                 std::string oldtmp = tmp;
3216                 modules[i]->OnServerRaw(tmp,true,user);
3217                 if (oldtmp != tmp)
3218                 {
3219                         log(DEBUG,"A Module changed the input string!");
3220                         log(DEBUG,"New string: %s",tmp.c_str());
3221                         log(DEBUG,"Old string: %s",oldtmp.c_str());
3222                         break;
3223                 }
3224         }
3225         strlcpy(cmd,tmp.c_str(),MAXBUF);
3226         strlcpy(temp,cmd,MAXBUF);
3227
3228         if (!strchr(cmd,' '))
3229         {
3230                 /* no parameters, lets skip the formalities and not chop up
3231                  * the string */
3232                 log(DEBUG,"About to preprocess command with no params");
3233                 items = 0;
3234                 command_p[0] = NULL;
3235                 parameters = NULL;
3236                 for (int i = 0; i <= strlen(cmd); i++)
3237                 {
3238                         cmd[i] = toupper(cmd[i]);
3239                 }
3240                 command = cmd;
3241         }
3242         else
3243         {
3244                 strcpy(cmd,"");
3245                 j = 0;
3246                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
3247                 for (int i = 0; i < strlen(temp); i++)
3248                 {
3249                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
3250                         {
3251                                 cmd[j++] = temp[i];
3252                                 cmd[j] = 0;
3253                         }
3254                 }
3255                 /* split the full string into a command plus parameters */
3256                 parameters = p;
3257                 strcpy(p," ");
3258                 command = cmd;
3259                 if (strchr(cmd,' '))
3260                 {
3261                         for (int i = 0; i <= strlen(cmd); i++)
3262                         {
3263                                 /* capitalise the command ONLY, leave params intact */
3264                                 cmd[i] = toupper(cmd[i]);
3265                                 /* are we nearly there yet?! :P */
3266                                 if (cmd[i] == ' ')
3267                                 {
3268                                         command = cmd;
3269                                         parameters = cmd+i+1;
3270                                         cmd[i] = '\0';
3271                                         break;
3272                                 }
3273                         }
3274                 }
3275                 else
3276                 {
3277                         for (int i = 0; i <= strlen(cmd); i++)
3278                         {
3279                                 cmd[i] = toupper(cmd[i]);
3280                         }
3281                 }
3282
3283         }
3284         cmd_found = 0;
3285
3286         if (strlen(command)>MAXCOMMAND)
3287         {
3288                 WriteServ(user->fd,"421 %s %s :Command too long",user->nick,command);
3289                 return;
3290         }
3291
3292         for (int x = 0; x < strlen(command); x++)
3293         {
3294                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
3295                 {
3296                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
3297                         {
3298                                 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
3299                                 {
3300                                         statsUnknown++;
3301                                         WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3302                                         return;
3303                                 }
3304                         }
3305                 }
3306         }
3307
3308         for (int i = 0; i != cmdlist.size(); i++)
3309         {
3310                 if (cmdlist[i].command[0])
3311                 {
3312                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
3313                         {
3314                                 if (parameters)
3315                                 {
3316                                         if (parameters[0])
3317                                         {
3318                                                 items = process_parameters(command_p,parameters);
3319                                         }
3320                                         else
3321                                         {
3322                                                 items = 0;
3323                                                 command_p[0] = NULL;
3324                                         }
3325                                 }
3326                                 else
3327                                 {
3328                                         items = 0;
3329                                         command_p[0] = NULL;
3330                                 }
3331
3332                                 if (user)
3333                                 {
3334                                         /* activity resets the ping pending timer */
3335                                         user->nping = TIME + user->pingmax;
3336                                         if ((items) < cmdlist[i].min_params)
3337                                         {
3338                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
3339                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
3340                                                 return;
3341                                         }
3342                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
3343                                         {
3344                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3345                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
3346                                                 cmd_found = 1;
3347                                                 return;
3348                                         }
3349                                         if ((cmdlist[i].flags_needed) && (!user->HasPermission(command)))
3350                                         {
3351                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3352                                                 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
3353                                                 cmd_found = 1;
3354                                                 return;
3355                                         }
3356                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
3357                                          * deny command! */
3358                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
3359                                         {
3360                                                 if ((!isnick(user->nick)) || (user->registered != 7))
3361                                                 {
3362                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
3363                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
3364                                                         return;
3365                                                 }
3366                                         }
3367                                         if ((user->registered == 7) && (!strchr(user->modes,'o')))
3368                                         {
3369                                                 char* mycmd;
3370                                                 char* savept2;
3371                                                 mycmd = strtok_r(DisabledCommands," ",&savept2);
3372                                                 while (mycmd)
3373                                                 {
3374                                                         if (!strcasecmp(mycmd,command))
3375                                                         {
3376                                                                 // command is disabled!
3377                                                                 WriteServ(user->fd,"421 %s %s :This command has been disabled.",user->nick,command);
3378                                                                 return;
3379                                                         }
3380                                                         mycmd = strtok_r(NULL," ",&savept2);
3381                                                 }
3382
3383
3384                                         }
3385                                         if ((user->registered == 7) || (!strncmp(command,"USER",4)) || (!strncmp(command,"NICK",4)) || (!strncmp(command,"PASS",4)))
3386                                         {
3387                                                 if (cmdlist[i].handler_function)
3388                                                 {
3389
3390                                                         /* ikky /stats counters */
3391                                                         if (temp)
3392                                                         {
3393                                                                 cmdlist[i].use_count++;
3394                                                                 cmdlist[i].total_bytes+=strlen(temp);
3395                                                         }
3396
3397                                                         int MOD_RESULT = 0;
3398                                                         FOREACH_RESULT(OnPreCommand(command,command_p,items,user));
3399                                                         if (MOD_RESULT == 1) {
3400                                                                 return;
3401                                                         }
3402
3403                                                         /* WARNING: nothing may come after the
3404                                                          * command handler call, as the handler
3405                                                          * may free the user structure! */
3406
3407                                                         cmdlist[i].handler_function(command_p,items,user);
3408                                                 }
3409                                                 return;
3410                                         }
3411                                         else
3412                                         {
3413                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
3414                                                 return;
3415                                         }
3416                                 }
3417                                 cmd_found = 1;
3418                         }
3419                 }
3420         }
3421         if ((!cmd_found) && (user))
3422         {
3423                 statsUnknown++;
3424                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3425         }
3426 }
3427
3428
3429 void createcommand(char* cmd, handlerfunc f, char flags, int minparams,char* source)
3430 {
3431         command_t comm;
3432         /* create the command and push it onto the table */
3433         strlcpy(comm.command,cmd,MAXBUF);
3434         strlcpy(comm.source,source,MAXBUF);
3435         comm.handler_function = f;
3436         comm.flags_needed = flags;
3437         comm.min_params = minparams;
3438         comm.use_count = 0;
3439         comm.total_bytes = 0;
3440         cmdlist.push_back(comm);
3441         log(DEBUG,"Added command %s (%lu parameters)",cmd,(unsigned long)minparams);
3442 }
3443
3444 bool removecommands(const char* source)
3445 {
3446         bool go_again = true;
3447         while (go_again)
3448         {
3449                 go_again = false;
3450                 for (std::deque<command_t>::iterator i = cmdlist.begin(); i != cmdlist.end(); i++)
3451                 {
3452                         if (!strcmp(i->source,source))
3453                         {
3454                                 log(DEBUG,"removecommands(%s) Removing dependent command: %s",i->source,i->command);
3455                                 cmdlist.erase(i);
3456                                 go_again = true;
3457                                 break;
3458                         }
3459                 }
3460         }
3461         return true;
3462 }
3463
3464 void SetupCommandTable(void)
3465 {
3466         createcommand("USER",handle_user,0,4,"<core>");
3467         createcommand("NICK",handle_nick,0,1,"<core>");
3468         createcommand("QUIT",handle_quit,0,0,"<core>");
3469         createcommand("VERSION",handle_version,0,0,"<core>");
3470         createcommand("PING",handle_ping,0,1,"<core>");
3471         createcommand("PONG",handle_pong,0,1,"<core>");
3472         createcommand("ADMIN",handle_admin,0,0,"<core>");
3473         createcommand("PRIVMSG",handle_privmsg,0,2,"<core>");
3474         createcommand("INFO",handle_info,0,0,"<core>");
3475         createcommand("TIME",handle_time,0,0,"<core>");
3476         createcommand("WHOIS",handle_whois,0,1,"<core>");
3477         createcommand("WALLOPS",handle_wallops,'o',1,"<core>");
3478         createcommand("NOTICE",handle_notice,0,2,"<core>");
3479         createcommand("JOIN",handle_join,0,1,"<core>");
3480         createcommand("NAMES",handle_names,0,0,"<core>");
3481         createcommand("PART",handle_part,0,1,"<core>");
3482         createcommand("KICK",handle_kick,0,2,"<core>");
3483         createcommand("MODE",handle_mode,0,1,"<core>");
3484         createcommand("TOPIC",handle_topic,0,1,"<core>");
3485         createcommand("WHO",handle_who,0,1,"<core>");
3486         createcommand("MOTD",handle_motd,0,0,"<core>");
3487         createcommand("RULES",handle_rules,0,0,"<core>");
3488         createcommand("OPER",handle_oper,0,2,"<core>");
3489         createcommand("LIST",handle_list,0,0,"<core>");
3490         createcommand("DIE",handle_die,'o',1,"<core>");
3491         createcommand("RESTART",handle_restart,'o',1,"<core>");
3492         createcommand("KILL",handle_kill,'o',2,"<core>");
3493         createcommand("REHASH",handle_rehash,'o',0,"<core>");
3494         createcommand("LUSERS",handle_lusers,0,0,"<core>");
3495         createcommand("STATS",handle_stats,0,1,"<core>");
3496         createcommand("USERHOST",handle_userhost,0,1,"<core>");
3497         createcommand("AWAY",handle_away,0,0,"<core>");
3498         createcommand("ISON",handle_ison,0,0,"<core>");
3499         createcommand("SUMMON",handle_summon,0,0,"<core>");
3500         createcommand("USERS",handle_users,0,0,"<core>");
3501         createcommand("INVITE",handle_invite,0,2,"<core>");
3502         createcommand("PASS",handle_pass,0,1,"<core>");
3503         createcommand("TRACE",handle_trace,'o',0,"<core>");
3504         createcommand("WHOWAS",handle_whowas,0,1,"<core>");
3505         createcommand("CONNECT",handle_connect,'o',1,"<core>");
3506         createcommand("SQUIT",handle_squit,'o',0,"<core>");
3507         createcommand("MODULES",handle_modules,0,0,"<core>");
3508         createcommand("LINKS",handle_links,0,0,"<core>");
3509         createcommand("MAP",handle_map,0,0,"<core>");
3510         createcommand("KLINE",handle_kline,'o',1,"<core>");
3511         createcommand("GLINE",handle_gline,'o',1,"<core>");
3512         createcommand("ZLINE",handle_zline,'o',1,"<core>");
3513         createcommand("QLINE",handle_qline,'o',1,"<core>");
3514         createcommand("ELINE",handle_eline,'o',1,"<core>");
3515         createcommand("LOADMODULE",handle_loadmodule,'o',1,"<core>");
3516         createcommand("UNLOADMODULE",handle_unloadmodule,'o',1,"<core>");
3517         createcommand("SERVER",handle_server,0,0,"<core>");
3518 }
3519
3520 void process_buffer(const char* cmdbuf,userrec *user)
3521 {
3522         if (!user)
3523         {
3524                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3525                 return;
3526         }
3527         char cmd[MAXBUF];
3528         if (!cmdbuf)
3529         {
3530                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3531                 return;
3532         }
3533         if (!cmdbuf[0])
3534         {
3535                 return;
3536         }
3537         while (*cmdbuf == ' ') cmdbuf++; // strip leading spaces
3538
3539         strlcpy(cmd,cmdbuf,MAXBUF);
3540         if (!cmd[0])
3541         {
3542                 return;
3543         }
3544         int sl = strlen(cmd)-1;
3545         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3546         {
3547                 cmd[sl] = '\0';
3548         }
3549         sl = strlen(cmd)-1;
3550         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3551         {
3552                 cmd[sl] = '\0';
3553         }
3554         sl = strlen(cmd)-1;
3555         while (cmd[sl] == ' ') // strip trailing spaces
3556         {
3557                 cmd[sl] = '\0';
3558                 sl = strlen(cmd)-1;
3559         }
3560
3561         if (!cmd[0])
3562         {
3563                 return;
3564         }
3565         log(DEBUG,"CMDIN: %s %s",user->nick,cmd);
3566         tidystring(cmd);
3567         if ((user) && (cmd))
3568         {
3569                 process_command(user,cmd);
3570         }
3571 }
3572
3573 void DoSync(serverrec* serv, char* tcp_host)
3574 {
3575         char data[MAXBUF];
3576         log(DEBUG,"Sending sync");
3577         // send start of sync marker: Y <timestamp>
3578         // at this point the ircd receiving it starts broadcasting this netburst to all ircds
3579         // except the ones its receiving it from.
3580         snprintf(data,MAXBUF,"Y %lu",(unsigned long)TIME);
3581         serv->SendPacket(data,tcp_host);
3582         // send users and channels
3583
3584         NetSendMyRoutingTable();
3585
3586         // send all routing table and uline voodoo. The ordering of these commands is IMPORTANT!
3587         for (int j = 0; j < 32; j++)
3588         {
3589                 if (me[j] != NULL)
3590                 {
3591                         for (int k = 0; k < me[j]->connectors.size(); k++)
3592                         {
3593                                 if (is_uline(me[j]->connectors[k].GetServerName().c_str()))
3594                                 {
3595                                         snprintf(data,MAXBUF,"H %s",me[j]->connectors[k].GetServerName().c_str());
3596                                         serv->SendPacket(data,tcp_host);
3597                                 }
3598                         }
3599                 }
3600         }
3601
3602         // send our version for the remote side to cache
3603         snprintf(data,MAXBUF,"v %s %s",ServerName,GetVersionString().c_str());
3604         serv->SendPacket(data,tcp_host);
3605
3606         // sync the users and channels, give the modules a look-in.
3607         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
3608         {
3609                 snprintf(data,MAXBUF,"N %lu %s %s %s %s +%s %s %s :%s",(unsigned long)u->second->age,u->second->nick,u->second->host,u->second->dhost,u->second->ident,u->second->modes,u->second->ip,u->second->server,u->second->fullname);
3610                 serv->SendPacket(data,tcp_host);
3611                 if (strchr(u->second->modes,'o'))
3612                 {
3613                         snprintf(data,MAXBUF,"| %s %s",u->second->nick,u->second->oper);
3614                         serv->SendPacket(data,tcp_host);
3615                 }
3616                 for (int i = 0; i <= MODCOUNT; i++)
3617                 {
3618                         string_list l = modules[i]->OnUserSync(u->second);
3619                         for (int j = 0; j < l.size(); j++)
3620                         {
3621                                 strlcpy(data,l[j].c_str(),MAXBUF);
3622                                 serv->SendPacket(data,tcp_host);
3623                         }
3624                 }
3625                 char* chl = chlist(u->second,u->second);
3626                 if (strcmp(chl,""))
3627                 {
3628                         snprintf(data,MAXBUF,"J %s %s",u->second->nick,chl);
3629                         serv->SendPacket(data,tcp_host);
3630                 }
3631         }
3632         // send channel modes, topics etc...
3633         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
3634         {
3635                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
3636                 serv->SendPacket(data,tcp_host);
3637                 for (int i = 0; i <= MODCOUNT; i++)
3638                 {
3639                         string_list l = modules[i]->OnChannelSync(c->second);
3640                         for (int j = 0; j < l.size(); j++)
3641                         {
3642                                 strlcpy(data,l[j].c_str(),MAXBUF);
3643                                 serv->SendPacket(data,tcp_host);
3644                         }
3645                 }
3646                 if (c->second->topic[0])
3647                 {
3648                         snprintf(data,MAXBUF,"T %lu %s %s :%s",(unsigned long)c->second->topicset,c->second->setby,c->second->name,c->second->topic);
3649                         serv->SendPacket(data,tcp_host);
3650                 }
3651                 // send current banlist
3652
3653                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
3654                 {
3655                         snprintf(data,MAXBUF,"M %s +b %s",c->second->name,b->data);
3656                         serv->SendPacket(data,tcp_host);
3657                 }
3658         }
3659         // sync global zlines, glines, etc
3660         sync_xlines(serv,tcp_host);
3661
3662         snprintf(data,MAXBUF,"F %lu",(unsigned long)TIME);
3663         serv->SendPacket(data,tcp_host);
3664         log(DEBUG,"Sent sync");
3665         // ircd sends its serverlist after the end of sync here
3666 }
3667
3668
3669 void NetSendMyRoutingTable()
3670 {
3671         // send out a line saying what is reachable to us.
3672         // E.g. if A is linked to B C and D, send out:
3673         // $ A B C D
3674         // if its only linked to B and D send out:
3675         // $ A B D
3676         // if it has no links, dont even send out the line at all.
3677         char buffer[MAXBUF];
3678         snprintf(buffer,MAXBUF,"$ %s",ServerName);
3679         bool sendit = false;
3680         for (int i = 0; i < 32; i++)
3681         {
3682                 if (me[i] != NULL)
3683                 {
3684                         for (int j = 0; j < me[i]->connectors.size(); j++)
3685                         {
3686                                 if ((me[i]->connectors[j].GetState() != STATE_DISCONNECTED) || (is_uline(me[i]->connectors[j].GetServerName().c_str())))
3687                                 {
3688                                         strlcat(buffer," ",MAXBUF);
3689                                         strlcat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF);
3690                                         sendit = true;
3691                                 }
3692                         }
3693                 }
3694         }
3695         if (sendit)
3696                 NetSendToAll(buffer);
3697 }
3698
3699
3700 void DoSplit(const char* params)
3701 {
3702         bool go_again = true;
3703         while (go_again)
3704         {
3705                 go_again = false;
3706                 for (int i = 0; i < 32; i++)
3707                 {
3708                         if (me[i] != NULL)
3709                         {
3710                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3711                                 {
3712                                         if (!strcasecmp(j->GetServerName().c_str(),params))
3713                                         {
3714                                                 j->routes.clear();
3715                                                 j->CloseConnection();
3716                                                 me[i]->connectors.erase(j);
3717                                                 go_again = true;
3718                                                 break;
3719                                         }
3720                                 }
3721                         }
3722                 }
3723         }
3724         log(DEBUG,"Removed server. Will remove clients...");
3725         // iterate through the userlist and remove all users on this server.
3726         // because we're dealing with a mesh, we dont have to deal with anything
3727         // "down-route" from this server (nice huh)
3728         go_again = true;
3729         char reason[MAXBUF];
3730         snprintf(reason,MAXBUF,"%s %s",ServerName,params);
3731         while (go_again)
3732         {
3733                 go_again = false;
3734                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3735                 {
3736                         if (!strcasecmp(u->second->server,params))
3737                         {
3738                                 kill_link(u->second,reason);
3739                                 go_again = true;
3740                                 break;
3741                         }
3742                 }
3743         }
3744 }
3745
3746 // removes a server. Will NOT remove its users!
3747
3748 void RemoveServer(const char* name)
3749 {
3750         bool go_again = true;
3751         while (go_again)
3752         {
3753                 go_again = false;
3754                 for (int i = 0; i < 32; i++)
3755                 {
3756                         if (me[i] != NULL)
3757                         {
3758                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3759                                 {
3760                                         if (!strcasecmp(j->GetServerName().c_str(),name))
3761                                         {
3762                                                 j->routes.clear();
3763                                                 j->CloseConnection();
3764                                                 me[i]->connectors.erase(j);
3765                                                 go_again = true;
3766                                                 break;
3767                                         }
3768                                 }
3769                         }
3770                 }
3771         }
3772 }
3773
3774
3775 char MODERR[MAXBUF];
3776
3777 char* ModuleError()
3778 {
3779         return MODERR;
3780 }
3781
3782 void erase_factory(int j)
3783 {
3784         int v = 0;
3785         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
3786         {
3787                 if (v == j)
3788                 {
3789                         factory.erase(t);
3790                         factory.push_back(NULL);
3791                         return;
3792                 }
3793                 v++;
3794         }
3795 }
3796
3797 void erase_module(int j)
3798 {
3799         int v1 = 0;
3800         for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
3801         {
3802                 if (v1 == j)
3803                 {
3804                         delete *m;
3805                         modules.erase(m);
3806                         modules.push_back(NULL);
3807                         break;
3808                 }
3809                 v1++;
3810         }
3811         int v2 = 0;
3812         for (std::vector<std::string>::iterator v = module_names.begin(); v != module_names.end(); v++)
3813         {
3814                 if (v2 == j)
3815                 {
3816                        module_names.erase(v);
3817                        break;
3818                 }
3819                 v2++;
3820         }
3821
3822 }
3823
3824 bool UnloadModule(const char* filename)
3825 {
3826         std::string filename_str = filename;
3827         for (int j = 0; j != module_names.size(); j++)
3828         {
3829                 if (module_names[j] == filename_str)
3830                 {
3831                         if (modules[j]->GetVersion().Flags & VF_STATIC)
3832                         {
3833                                 log(DEFAULT,"Failed to unload STATIC module %s",filename);
3834                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
3835                                 return false;
3836                         }
3837                         // found the module
3838                         log(DEBUG,"Deleting module...");
3839                         erase_module(j);
3840                         log(DEBUG,"Erasing module entry...");
3841                         erase_factory(j);
3842                         log(DEBUG,"Removing dependent commands...");
3843                         removecommands(filename);
3844                         log(DEFAULT,"Module %s unloaded",filename);
3845                         MODCOUNT--;
3846                         return true;
3847                 }
3848         }
3849         log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
3850         snprintf(MODERR,MAXBUF,"Module not loaded");
3851         return false;
3852 }
3853
3854 bool DirValid(char* dirandfile)
3855 {
3856         char work[MAXBUF];
3857         strlcpy(work,dirandfile,MAXBUF);
3858         int p = strlen(work);
3859         // we just want the dir
3860         while (strlen(work))
3861         {
3862                 if (work[p] == '/')
3863                 {
3864                         work[p] = '\0';
3865                         break;
3866                 }
3867                 work[p--] = '\0';
3868         }
3869         char buffer[MAXBUF], otherdir[MAXBUF];
3870         // Get the current working directory
3871         if( getcwd( buffer, MAXBUF ) == NULL )
3872                 return false;
3873         chdir(work);
3874         if( getcwd( otherdir, MAXBUF ) == NULL )
3875                 return false;
3876         chdir(buffer);
3877         if (strlen(otherdir) >= strlen(work))
3878         {
3879                 otherdir[strlen(work)] = '\0';
3880                 if (!strcmp(otherdir,work))
3881                 {
3882                         return true;
3883                 }
3884                 return false;
3885         }
3886         else return false;
3887 }
3888
3889 std::string GetFullProgDir(char** argv, int argc)
3890 {
3891         char work[MAXBUF];
3892         strlcpy(work,argv[0],MAXBUF);
3893         int p = strlen(work);
3894         // we just want the dir
3895         while (strlen(work))
3896         {
3897                 if (work[p] == '/')
3898                 {
3899                         work[p] = '\0';
3900                         break;
3901                 }
3902                 work[p--] = '\0';
3903         }
3904         char buffer[MAXBUF], otherdir[MAXBUF];
3905         // Get the current working directory
3906         if( getcwd( buffer, MAXBUF ) == NULL )
3907                 return "";
3908         chdir(work);
3909         if( getcwd( otherdir, MAXBUF ) == NULL )
3910                 return "";
3911         chdir(buffer);
3912         return otherdir;
3913 }
3914
3915 bool LoadModule(const char* filename)
3916 {
3917         char modfile[MAXBUF];
3918         snprintf(modfile,MAXBUF,"%s/%s",ModPath,filename);
3919         std::string filename_str = filename;
3920         if (!DirValid(modfile))
3921         {
3922                 log(DEFAULT,"Module %s is not within the modules directory.",modfile);
3923                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
3924                 return false;
3925         }
3926         log(DEBUG,"Loading module: %s",modfile);
3927         if (FileExists(modfile))
3928         {
3929                 for (int j = 0; j < module_names.size(); j++)
3930                 {
3931                         if (module_names[j] == filename_str)
3932                         {
3933                                 log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
3934                                 snprintf(MODERR,MAXBUF,"Module already loaded");
3935                                 return false;
3936                         }
3937                 }
3938                 ircd_module* a = new ircd_module(modfile);
3939                 factory[MODCOUNT+1] = a;
3940                 if (factory[MODCOUNT+1]->LastError())
3941                 {
3942                         log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
3943                         snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
3944                         MODCOUNT--;
3945                         return false;
3946                 }
3947                 if (factory[MODCOUNT+1]->factory)
3948                 {
3949                         Module* m = factory[MODCOUNT+1]->factory->CreateModule();
3950                         modules[MODCOUNT+1] = m;
3951                         /* save the module and the module's classfactory, if
3952                          * this isnt done, random crashes can occur :/ */
3953                         module_names.push_back(filename);
3954                 }
3955                 else
3956                 {
3957                         log(DEFAULT,"Unable to load %s",modfile);
3958                         snprintf(MODERR,MAXBUF,"Factory function failed!");
3959                         return false;
3960                 }
3961         }
3962         else
3963         {
3964                 log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
3965                 snprintf(MODERR,MAXBUF,"Module file could not be found");
3966                 return false;
3967         }
3968         MODCOUNT++;
3969         return true;
3970 }
3971
3972 int InspIRCd(char** argv, int argc)
3973 {
3974         struct sockaddr_in client,server;
3975         char addrs[MAXBUF][255];
3976         int incomingSockfd, result = TRUE;
3977         socklen_t length;
3978         int count = 0;
3979         int selectResult = 0, selectResult2 = 0;
3980         char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
3981         fd_set selectFds;
3982         timeval tv;
3983
3984         std::string logpath = GetFullProgDir(argv,argc) + "/ircd.log";
3985         log_file = fopen(logpath.c_str(),"a+");
3986         if (!log_file)
3987         {
3988                 printf("ERROR: Could not write to logfile %s, bailing!\n\n",logpath.c_str());
3989                 Exit(ERROR);
3990         }
3991         printf("Logging to %s...\n",logpath.c_str());
3992
3993         log(DEFAULT,"$Id$");
3994         if (geteuid() == 0)
3995         {
3996                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
3997                 Exit(ERROR);
3998                 log(DEFAULT,"InspIRCd: startup: not starting with UID 0!");
3999         }
4000         SetupCommandTable();
4001         log(DEBUG,"InspIRCd: startup: default command table set up");
4002
4003         ReadConfig(true,NULL);
4004         if (DieValue[0])
4005         {
4006                 printf("WARNING: %s\n\n",DieValue);
4007                 log(DEFAULT,"Ut-Oh, somebody didn't read their config file: '%s'",DieValue);
4008                 exit(0);
4009         }
4010         log(DEBUG,"InspIRCd: startup: read config");
4011
4012         int clientportcount = 0, serverportcount = 0;
4013
4014         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
4015         {
4016                 ConfValue("bind","port",count,configToken,&config_f);
4017                 ConfValue("bind","address",count,Addr,&config_f);
4018                 ConfValue("bind","type",count,Type,&config_f);
4019                 if (!strcmp(Type,"servers"))
4020                 {
4021                         char Default[MAXBUF];
4022                         strcpy(Default,"no");
4023                         ConfValue("bind","default",count,Default,&config_f);
4024                         if (strchr(Default,'y'))
4025                         {
4026                                 defaultRoute = serverportcount;
4027                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
4028                         }
4029                         me[serverportcount] = new serverrec(ServerName,100L,false);
4030                         if (!me[serverportcount]->CreateListener(Addr,atoi(configToken)))
4031                         {
4032                                 log(DEFAULT,"Warning: Failed to bind port %lu",(unsigned long)atoi(configToken));
4033                                 printf("Warning: Failed to bind port %lu\n",(unsigned long)atoi(configToken));
4034                         }
4035                         else
4036                         {
4037                                 serverportcount++;
4038                         }
4039                 }
4040                 else
4041                 {
4042                         ports[clientportcount] = atoi(configToken);
4043                         strlcpy(addrs[clientportcount],Addr,256);
4044                         clientportcount++;
4045                 }
4046                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
4047         }
4048         portCount = clientportcount;
4049         SERVERportCount = serverportcount;
4050
4051         log(DEBUG,"InspIRCd: startup: read %lu total client ports and %lu total server ports",(unsigned long)portCount,(unsigned long)SERVERportCount);
4052         log(DEBUG,"InspIRCd: startup: InspIRCd is now starting!");
4053
4054         printf("\n");
4055
4056         /* BugFix By Craig! :p */
4057         MODCOUNT = -1;
4058         for (count = 0; count < ConfValueEnum("module",&config_f); count++)
4059         {
4060                 ConfValue("module","name",count,configToken,&config_f);
4061                 printf("Loading module... \033[1;32m%s\033[0m\n",configToken);
4062                 if (!LoadModule(configToken))
4063                 {
4064                         log(DEFAULT,"Exiting due to a module loader error.");
4065                         printf("\nThere was an error loading a module: %s\n\nYou might want to do './inspircd start' instead of 'bin/inspircd'\n\n",ModuleError());
4066                         Exit(0);
4067                 }
4068         }
4069         log(DEFAULT,"Total loaded modules: %lu",(unsigned long)MODCOUNT+1);
4070
4071         startup_time = time(NULL);
4072
4073         char PID[MAXBUF];
4074         ConfValue("pid","file",0,PID,&config_f);
4075         // write once here, to try it out and make sure its ok
4076         WritePID(PID);
4077
4078         /* setup select call */
4079 #ifndef USE_KQUEUE
4080         FD_ZERO(&selectFds);
4081 #endif
4082         log(DEBUG,"InspIRCd: startup: zero selects");
4083         log(VERBOSE,"InspIRCd: startup: portCount = %lu", (unsigned long)portCount);
4084
4085         for (count = 0; count < portCount; count++)
4086         {
4087                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
4088                 {
4089                         log(DEBUG,"InspIRCd: startup: bad fd %lu",(unsigned long)openSockfd[boundPortCount]);
4090                         return(ERROR);
4091                 }
4092                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
4093                 {
4094                         log(DEFAULT,"InspIRCd: startup: failed to bind port %lu",(unsigned long)ports[count]);
4095                 }
4096                 else    /* well we at least bound to one socket so we'll continue */
4097                 {
4098                         boundPortCount++;
4099                 }
4100         }
4101
4102         log(DEBUG,"InspIRCd: startup: total bound ports %lu",(unsigned long)boundPortCount);
4103
4104         /* if we didn't bind to anything then abort */
4105         if (boundPortCount == 0)
4106         {
4107                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
4108                 printf("\nERROR: Was not able to bind any of %lu ports! Please check your configuration.\n\n", (unsigned long)portCount);
4109                 return (ERROR);
4110         }
4111
4112
4113         printf("\nInspIRCd is now running!\n");
4114
4115         if (nofork)
4116         {
4117                 log(VERBOSE,"Not forking as -nofork was specified");
4118         }
4119         else
4120         {
4121                 if (DaemonSeed() == ERROR)
4122                 {
4123                         log(DEFAULT,"InspIRCd: startup: can't daemonise");
4124                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
4125                         Exit(ERROR);
4126                 }
4127         }
4128
4129         // BUGFIX: We cannot initialize this before forking, as the kqueue data is not inherited by child processes!
4130 #ifdef USE_KQUEUE
4131         kq = kqueue();
4132         lkq = kqueue();
4133         skq = kqueue();
4134         if ((kq == -1) || (lkq == -1) || (skq == -1))
4135         {
4136                 log(DEFAULT,"main: kqueue() failed!");
4137                 printf("ERROR: could not initialise kqueue event system. Shutting down.\n");
4138                 Exit(ERROR);
4139         }
4140 #endif
4141
4142
4143 #ifdef USE_KQUEUE
4144         log(DEFAULT,"kqueue socket engine is enabled. Filling listen list.");
4145         for (count = 0; count < boundPortCount; count++)
4146         {
4147                 struct kevent ke;
4148                 log(DEBUG,"kqueue: Add listening socket to events, kq=%d socket=%d",lkq,openSockfd[count]);
4149                 EV_SET(&ke, openSockfd[count], EVFILT_READ, EV_ADD, 0, 5, NULL);
4150                 int i = kevent(lkq, &ke, 1, 0, 0, NULL);
4151                 if (i == -1)
4152                 {
4153                         log(DEFAULT,"main: add listen ports to kqueue failed!");
4154                         printf("ERROR: could not initialise listening sockets in kqueue. Shutting down.\n");
4155                 }
4156         }
4157         for (int t = 0; t != SERVERportCount; t++)
4158         {
4159                 struct kevent ke;
4160                 if (me[t])
4161                 {
4162                         log(DEBUG,"kqueue: Add listening SERVER socket to events, kq=%d socket=%d",skq,me[t]->fd);
4163                         EV_SET(&ke, me[t]->fd, EVFILT_READ, EV_ADD, 0, 5, NULL);
4164                         int i = kevent(skq, &ke, 1, 0, 0, NULL);
4165                         if (i == -1)
4166                         {
4167                                 log(DEFAULT,"main: add server listen ports to kqueue failed!");
4168                                 printf("ERROR: could not initialise listening server sockets in kqueue. Shutting down.\n");
4169                         }
4170                 }
4171         }
4172
4173
4174 #else
4175         log(DEFAULT,"Using standard select socket engine.");
4176 #endif
4177
4178         WritePID(PID);
4179
4180         length = sizeof (client);
4181         char tcp_msg[MAXBUF],tcp_host[MAXBUF];
4182
4183 #ifdef USE_KQUEUE
4184         struct kevent ke;
4185         struct kevent ke_list[33];
4186         struct timespec ts;
4187 #endif
4188         fd_set serverfds;
4189         timeval tvs;
4190         tvs.tv_usec = 10000L;
4191         tvs.tv_sec = 0;
4192         tv.tv_sec = 0;
4193         tv.tv_usec = 10000L;
4194         char data[65536];
4195         timeval tval;
4196         fd_set sfd;
4197         tval.tv_usec = 10000L;
4198         tval.tv_sec = 0;
4199         int total_in_this_set = 0;
4200         int i = 0, v = 0, j = 0, cycle_iter = 0;
4201         bool expire_run = false;
4202
4203         /* main loop, this never returns */
4204         for (;;)
4205         {
4206 #ifdef _POSIX_PRIORITY_SCHEDULING
4207                 sched_yield();
4208 #endif
4209 #ifndef USE_KQUEUE
4210                 FD_ZERO(&sfd);
4211 #endif
4212
4213                 // we only read time() once per iteration rather than tons of times!
4214                 OLDTIME = TIME;
4215                 TIME = time(NULL);
4216
4217                 dns_poll();
4218
4219                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
4220                 // them in a list, then reap the list every second or so.
4221                 if (((TIME % 5) == 0) && (!expire_run))
4222                 {
4223                         expire_lines();
4224                         FOREACH_MOD OnBackgroundTimer(TIME);
4225                         expire_run = true;
4226                         continue;
4227                 }
4228                 if ((TIME % 5) == 1)
4229                         expire_run = false;
4230
4231                 // fix by brain - this must be below any manipulation of the hashmap by modules
4232                 user_hash::iterator count2 = clientlist.begin();
4233
4234 #ifdef USE_KQUEUE
4235                 ts.tv_sec = 0;
4236                 ts.tv_nsec = 30000L;
4237                 i = kevent(skq, NULL, 0, &ke, 1, &ts);
4238                 if (i > 0)
4239                 {
4240                         log(DEBUG,"kqueue: Listening server socket event, i=%d, ke.ident=%d",i,ke.ident);
4241                         for (int x = 0; x != SERVERportCount; x++)
4242                         {
4243                                 if ((me[x]) && (ke.ident == me[x]->fd))
4244                                 {
4245
4246 #else
4247                 FD_ZERO(&serverfds);
4248                 for (int x = 0; x != SERVERportCount; x++)
4249                 {
4250                         if (me[x])
4251                                 FD_SET(me[x]->fd, &serverfds);
4252                 }
4253                 tvs.tv_usec = 30000L;
4254                 tvs.tv_sec = 0;
4255                 int servresult = select(32767, &serverfds, NULL, NULL, &tvs);
4256                 if (servresult > 0)
4257                 {
4258                         for (int x = 0; x != SERVERportCount; x++)
4259                         {
4260                                 if ((me[x]) && (FD_ISSET (me[x]->fd, &serverfds)))
4261                                 {
4262 #endif
4263                                         char remotehost[MAXBUF],resolved[MAXBUF];
4264                                         length = sizeof (client);
4265                                         incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length);
4266                                         if (incomingSockfd != -1)
4267                                         {
4268                                                 strlcpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF);
4269                                                 if(CleanAndResolve(resolved, remotehost) != TRUE)
4270                                                 {
4271                                                         strlcpy(resolved,remotehost,MAXBUF);
4272                                                 }
4273                                                 // add to this connections ircd_connector vector
4274                                                 // *FIX* - we need the LOCAL port not the remote port in &client!
4275                                                 me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port);
4276                                         }
4277                                 }
4278                         }
4279                 }
4280
4281                 for (int x = 0; x < SERVERportCount; x++)
4282                 {
4283                         std::deque<std::string> msgs;
4284                         msgs.clear();
4285                         if ((me[x]) && (me[x]->RecvPacket(msgs, tcp_host)))
4286                         {
4287                                 for (int ctr = 0; ctr < msgs.size(); ctr++)
4288                                 {
4289                                         strlcpy(tcp_msg,msgs[ctr].c_str(),MAXBUF);
4290                                         log(DEBUG,"Processing: %s",tcp_msg);
4291                                         if (!tcp_msg[0])
4292                                         {
4293                                                 log(DEBUG,"Invalid string from %s [route%lu]",tcp_host,(unsigned long)x);
4294                                                 break;
4295                                         }
4296                                         // during a netburst, send all data to all other linked servers
4297                                         if ((((nb_start>0) && (tcp_msg[0] != 'Y') && (tcp_msg[0] != 'X') && (tcp_msg[0] != 'F'))) || (is_uline(tcp_host)))
4298                                         {
4299                                                 if (is_uline(tcp_host))
4300                                                 {
4301                                                         if ((tcp_msg[0] != 'Y') && (tcp_msg[0] != 'X') && (tcp_msg[0] != 'F'))
4302                                                         {
4303                                                                 NetSendToAllExcept(tcp_host,tcp_msg);
4304                                                         }
4305                                                 }
4306                                                 else
4307                                                         NetSendToAllExcept(tcp_host,tcp_msg);
4308                                         }
4309                                         std::string msg = tcp_msg;
4310                                         FOREACH_MOD OnPacketReceive(msg,tcp_host);
4311                                         strlcpy(tcp_msg,msg.c_str(),MAXBUF);
4312                                         handle_link_packet(tcp_msg, tcp_host, me[x]);
4313                                 }
4314                                 goto label;
4315                         }
4316                 }
4317
4318         while (count2 != clientlist.end())
4319         {
4320 #ifndef USE_KQUEUE
4321                 FD_ZERO(&sfd);
4322 #endif
4323
4324                 total_in_this_set = 0;
4325
4326                 user_hash::iterator xcount = count2;
4327                 user_hash::iterator endingiter = count2;
4328
4329                 if (count2 == clientlist.end()) break;
4330
4331                 userrec* curr = NULL;
4332
4333                 if (count2->second)
4334                         curr = count2->second;
4335
4336                 if ((curr) && (curr->fd != 0))
4337                 {
4338 #ifdef _POSIX_PRIORITY_SCHEDULING
4339         sched_yield();
4340 #endif
4341                         // assemble up to 64 sockets into an fd_set
4342                         // to implement a pooling mechanism.
4343                         //
4344                         // This should be up to 64x faster than the
4345                         // old implementation.
4346 #ifndef USE_KQUEUE
4347                         while (total_in_this_set < 1024)
4348                         {
4349                                 if (count2 != clientlist.end())
4350                                 {
4351                                         curr = count2->second;
4352                                         // we don't check the state of remote users.
4353                                         if ((curr->fd != -1) && (curr->fd != FD_MAGIC_NUMBER))
4354                                         {
4355                                                 curr->FlushWriteBuf();
4356                                                 if (curr->GetWriteError() != "")
4357                                                 {
4358                                                         log(DEBUG,"InspIRCd: write error: %s",curr->GetWriteError().c_str());
4359                                                         kill_link(curr,curr->GetWriteError().c_str());
4360                                                         goto label;
4361                                                 }
4362
4363                                                 FD_SET (curr->fd, &sfd);
4364
4365                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
4366                                                 // their connection class.
4367                                                 if ((TIME > curr->timeout) && (curr->registered != 7))
4368                                                 {
4369                                                         log(DEBUG,"InspIRCd: registration timeout: %s",curr->nick);
4370                                                         kill_link(curr,"Registration timeout");
4371                                                         goto label;
4372                                                 }
4373                                                 if ((TIME > curr->signon) && (curr->registered == 3) && (AllModulesReportReady(curr)))
4374                                                 {
4375                                                         log(DEBUG,"signon exceed, registered=3, and modules ready, OK");
4376                                                         curr->dns_done = true;
4377                                                         statsDnsBad++;
4378                                                         FullConnectUser(curr);
4379                                                         goto label;
4380                                                 }
4381                                                 if ((curr->dns_done) && (curr->registered == 3) && (AllModulesReportReady(curr))) // both NICK and USER... and DNS
4382                                                 {
4383                                                         log(DEBUG,"dns done, registered=3, and modules ready, OK");
4384                                                         FullConnectUser(curr);
4385                                                         goto label;
4386                                                 }
4387                                                 if ((TIME > curr->nping) && (isnick(curr->nick)) && (curr->registered == 7))
4388                                                 {
4389                                                         if ((!curr->lastping) && (curr->registered == 7))
4390                                                         {
4391                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",curr->nick);
4392                                                                 kill_link(curr,"Ping timeout");
4393                                                                 goto label;
4394                                                         }
4395                                                         Write(curr->fd,"PING :%s",ServerName);
4396                                                         log(DEBUG,"InspIRCd: pinging: %s",curr->nick);
4397                                                         curr->lastping = 0;
4398                                                         curr->nping = TIME+curr->pingmax;       // was hard coded to 120
4399                                                 }
4400                                         }
4401                                         count2++;
4402                                         total_in_this_set++;
4403                                 }
4404                                 else break;
4405                         }
4406                         endingiter = count2;
4407                         count2 = xcount; // roll back to where we were
4408 #else
4409                         // KQUEUE: We don't go through a loop to fill the fd_set so instead we must manually do this loop every now and again.
4410                         // TODO: We dont need to do all this EVERY loop iteration, tone down the visits to this if we're using kqueue.
4411                         cycle_iter++;
4412                         if (cycle_iter > 10) while (count2 != clientlist.end())
4413                         {
4414                                 cycle_iter = 0;
4415                                 if (count2 != clientlist.end())
4416                                 {
4417                                         curr = count2->second;
4418                                         // we don't check the state of remote users.
4419                                         if ((curr->fd != -1) && (curr->fd != FD_MAGIC_NUMBER))
4420                                         {
4421
4422                                                 curr->FlushWriteBuf();
4423                                                 if (curr->GetWriteError() != "")
4424                                                 {
4425                                                         log(DEBUG,"InspIRCd: write error: %s",curr->GetWriteError().c_str());
4426                                                         kill_link(curr,curr->GetWriteError().c_str());
4427                                                         goto label;
4428                                                 }
4429
4430                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
4431                                                 // their connection class.
4432                                                 if ((TIME > curr->timeout) && (curr->registered != 7))
4433                                                 {
4434                                                         log(DEBUG,"InspIRCd: registration timeout: %s",curr->nick);
4435                                                         kill_link(curr,"Registration timeout");
4436                                                         goto label;
4437                                                 }
4438                                                 if ((TIME > curr->signon) && (curr->registered == 3) && (AllModulesReportReady(curr)))
4439                                                 {
4440                                                         log(DEBUG,"signon exceed, registered=3, and modules ready, OK: %d %d",TIME,curr->signon);
4441                                                         curr->dns_done = true;
4442                                                         statsDnsBad++;
4443                                                         FullConnectUser(curr);
4444                                                         goto label;
4445                                                 }
4446                                                 if ((curr->dns_done) && (curr->registered == 3) && (AllModulesReportReady(curr)))
4447                                                 {
4448                                                         log(DEBUG,"dns done, registered=3, and modules ready, OK");
4449                                                         FullConnectUser(curr);
4450                                                         goto label;
4451                                                 }
4452                                                 if ((TIME > curr->nping) && (isnick(curr->nick)) && (curr->registered == 7))
4453                                                 {
4454                                                         if ((!curr->lastping) && (curr->registered == 7))
4455                                                         {
4456                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",curr->nick);
4457                                                                 kill_link(curr,"Ping timeout");
4458                                                                 goto label;
4459                                                         }
4460                                                         Write(curr->fd,"PING :%s",ServerName);
4461                                                         log(DEBUG,"InspIRCd: pinging: %s",curr->nick);
4462                                                         curr->lastping = 0;
4463                                                         curr->nping = TIME+curr->pingmax;       // was hard coded to 120
4464                                                 }
4465                                         }
4466                                 }
4467                                 else break;
4468                                 count2++;
4469                         }
4470                         // increment the counter right to the end of the list, as kqueue processes everything in one go
4471 #endif
4472
4473                         v = 0;
4474
4475 #ifdef USE_KQUEUE
4476                         ts.tv_sec = 0;
4477                         ts.tv_nsec = 1000L;
4478                         // for now, we only read 1 event. We could read soooo many more :)
4479                         int i = kevent(kq, NULL, 0, &ke, 1, &ts);
4480                         if (i > 0)
4481                         {
4482                                 log(DEBUG,"kevent call: kq=%d, i=%d",kq,i);
4483                                 // KQUEUE: kevent gives us ONE fd which is ready to have something done to it. Do something to it.
4484                                 userrec* cu = fd_ref_table[ke.ident];
4485 #else
4486                         tval.tv_usec = 1000L;
4487                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
4488
4489                         // now loop through all of the items in this pool if any are waiting
4490                         if (selectResult2 > 0)
4491                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
4492                         {
4493                                 // SELECT: we have to iterate...
4494                                 userrec* cu = count2a->second;
4495 #endif
4496
4497 #ifdef _POSIX_PRIORITY_SCHEDULING
4498                                 sched_yield();
4499 #endif
4500                                 result = EAGAIN;
4501 #ifdef USE_KQUEUE
4502                                 // KQUEUE: We already know we have a valid FD. No checks needed.
4503                                 if ((cu->fd != FD_MAGIC_NUMBER) && (cu->fd != -1))
4504 #else
4505                                 // SELECT: We don't know if our FD is valid.
4506                                 if ((cu->fd != FD_MAGIC_NUMBER) && (cu->fd != -1) && (FD_ISSET (cu->fd, &sfd)))
4507 #endif
4508                                 {
4509                                         log(DEBUG,"Data waiting on socket %d",cu->fd);
4510                                         int MOD_RESULT = 0;
4511                                         int result2 = 0;
4512                                         FOREACH_RESULT(OnRawSocketRead(cu->fd,data,65535,result2));
4513                                         if (!MOD_RESULT)
4514                                         {
4515                                                 result = read(cu->fd, data, 65535);
4516                                         }
4517                                         else result = result2;
4518                                         log(DEBUG,"Read result: %d",result);
4519                                         if (result)
4520                                         {
4521                                                 statsRecv += result;
4522                                                 // perform a check on the raw buffer as an array (not a string!) to remove
4523                                                 // characters 0 and 7 which are illegal in the RFC - replace them with spaces.
4524                                                 // hopefully this should stop even more people whining about "Unknown command: *"
4525                                                 for (int checker = 0; checker < result; checker++)
4526                                                 {
4527                                                         if ((data[checker] == 0) || (data[checker] == 7))
4528                                                                 data[checker] = ' ';
4529                                                 }
4530                                                 if (result > 0)
4531                                                         data[result] = '\0';
4532                                                 userrec* current = cu;
4533                                                 int currfd = current->fd;
4534                                                 int floodlines = 0;
4535                                                 // add the data to the users buffer
4536                                                 if (result > 0)
4537                                                 if (!current->AddBuffer(data))
4538                                                 {
4539                                                         // AddBuffer returned false, theres too much data in the user's buffer and theyre up to no good.
4540                                                         if (current->registered == 7)
4541                                                         {
4542                                                                 kill_link(current,"RecvQ exceeded");
4543                                                         }
4544                                                         else
4545                                                         {
4546                                                                 WriteOpers("*** Excess flood from %s",current->ip);
4547                                                                 log(DEFAULT,"Excess flood from: %s",current->ip);
4548                                                                 add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
4549                                                                 apply_lines();
4550                                                         }
4551                                                         goto label;
4552                                                 }
4553                                                 if (current->recvq.length() > NetBufferSize)
4554                                                 {
4555                                                         if (current->registered == 7)
4556                                                         {
4557                                                                 kill_link(current,"RecvQ exceeded");
4558                                                         }
4559                                                         else
4560                                                         {
4561                                                                 WriteOpers("*** Excess flood from %s",current->ip);
4562                                                                 log(DEFAULT,"Excess flood from: %s",current->ip);
4563                                                                 add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
4564                                                                 apply_lines();
4565                                                         }
4566                                                         goto label;
4567                                                 }
4568                                                 // while there are complete lines to process...
4569                                                 while (current->BufferIsReady())
4570                                                 {
4571                                                         floodlines++;
4572                                                         if (TIME > current->reset_due)
4573                                                         {
4574                                                                 current->reset_due = TIME + current->threshold;
4575                                                                 current->lines_in = 0;
4576                                                         }
4577                                                         current->lines_in++;
4578                                                         if (current->lines_in > current->flood)
4579                                                         {
4580                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4581                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4582                                                                 kill_link(current,"Excess flood");
4583                                                                 goto label;
4584                                                         }
4585                                                         if ((floodlines > current->flood) && (current->flood != 0))
4586                                                         {
4587                                                                 if (current->registered == 7)
4588                                                                 {
4589                                                                         log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4590                                                                         WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4591                                                                         kill_link(current,"Excess flood");
4592                                                                 }
4593                                                                 else
4594                                                                 {
4595                                                                         add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
4596                                                                         apply_lines();
4597                                                                 }
4598                                                                 goto label;
4599                                                         }
4600                                                         char sanitized[MAXBUF];
4601                                                         // use GetBuffer to copy single lines into the sanitized string
4602                                                         std::string single_line = current->GetBuffer();
4603                                                         current->bytes_in += single_line.length();
4604                                                         current->cmds_in++;
4605                                                         if (single_line.length()>512)
4606                                                         {
4607                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4608                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4609                                                                 kill_link(current,"Excess flood");
4610                                                                 goto label;
4611                                                         }
4612                                                         strlcpy(sanitized,single_line.c_str(),MAXBUF);
4613                                                         if (*sanitized)
4614                                                         {
4615                                                                 userrec* old_comp = fd_ref_table[currfd];
4616                                                                 // we're gonna re-scan to check if the nick is gone, after every
4617                                                                 // command - if it has, we're gonna bail
4618                                                                 process_buffer(sanitized,current);
4619                                                                 // look for the user's record in case it's changed... if theyve quit,
4620                                                                 // we cant do anything more with their buffer, so bail.
4621                                                                 // there used to be an ugly, slow loop here. Now we have a reference
4622                                                                 // table, life is much easier (and FASTER)
4623                                                                 userrec* new_comp = fd_ref_table[currfd];
4624                                                                 if ((currfd < 0) || (!fd_ref_table[currfd]) || (old_comp != new_comp))
4625                                                                         goto label;
4626
4627                                                         }
4628                                                 }
4629                                                 goto label;
4630                                         }
4631
4632                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
4633                                         {
4634                                                 log(DEBUG,"killing: %s",cu->nick);
4635                                                 kill_link(cu,strerror(errno));
4636                                                 goto label;
4637                                         }
4638                                 }
4639                                 // result EAGAIN means nothing read
4640                                 if (result == EAGAIN)
4641                                 {
4642                                 }
4643                                 else
4644                                 if (result == 0)
4645                                 {
4646 #ifndef USE_KQUEUE
4647                                         if (count2->second)
4648                                         {
4649 #endif
4650                                                 log(DEBUG,"InspIRCd: Exited: %s",cu->nick);
4651                                                 kill_link(cu,"Client exited");
4652                                                 // must bail here? kill_link removes the hash, corrupting the iterator
4653                                                 log(DEBUG,"Bailing from client exit");
4654                                                 goto label;
4655 #ifndef USE_KQUEUE
4656                                         }
4657 #endif
4658                                 }
4659                                 else if (result > 0)
4660                                 {
4661                                 }
4662                         }
4663                 }
4664                 for (int q = 0; q < total_in_this_set; q++)
4665                 {
4666                         count2++;
4667                 }
4668         }
4669
4670 #ifdef _POSIX_PRIORITY_SCHEDULING
4671         sched_yield();
4672 #endif
4673
4674 #ifndef USE_KQUEUE
4675         // set up select call
4676         for (count = 0; count < boundPortCount; count++)
4677         {
4678                 FD_SET (openSockfd[count], &selectFds);
4679         }
4680
4681         tv.tv_usec = 30000L;
4682         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
4683
4684         /* select is reporting a waiting socket. Poll them all to find out which */
4685         if (selectResult > 0)
4686         {
4687                 for (count = 0; count < boundPortCount; count++)
4688                 {
4689                         if (FD_ISSET (openSockfd[count], &selectFds))
4690                         {
4691 #else
4692         ts.tv_sec = 0;
4693         ts.tv_nsec = 30000L;
4694         i = kevent(lkq, NULL, 0, ke_list, 32, &ts);
4695         if (i > 0) for (j = 0; j < i; j++)
4696         {
4697                 log(DEBUG,"kqueue: Listening socket event, i=%d, ke.ident=%d",i,ke.ident);
4698                 // this isnt as efficient as it could be, we could create a reference table
4699                 // to reference bound ports by fd, but this isnt a big bottleneck as the actual
4700                 // number of listening ports on the average ircd is a small number (less than 20)
4701                 // compared to the number of clients (possibly over 2000)
4702                 for (count = 0; count < boundPortCount; count++)
4703                 {
4704                         if (ke_list[j].ident == openSockfd[count])
4705                         {
4706 #endif
4707                                 char target[MAXBUF], resolved[MAXBUF];
4708                                 length = sizeof (client);
4709                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
4710
4711                                 strlcpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
4712                                 strlcpy (resolved, target, MAXBUF);
4713
4714                                 if (incomingSockfd < 0)
4715                                 {
4716                                         WriteOpers("*** WARNING: Accept failed on port %lu (%s)",(unsigned long)ports[count],target);
4717                                         log(DEBUG,"InspIRCd: accept failed: %lu",(unsigned long)ports[count]);
4718                                         statsRefused++;
4719                                 }
4720                                 else
4721                                 {
4722                                         FOREACH_MOD OnRawSocketAccept(incomingSockfd, resolved, ports[count]);
4723                                         statsAccept++;
4724                                         AddClient(incomingSockfd, resolved, ports[count], false, inet_ntoa (client.sin_addr));
4725                                         log(DEBUG,"InspIRCd: adding client on port %lu fd=%lu",(unsigned long)ports[count],(unsigned long)incomingSockfd);
4726                                 }
4727                                 //goto label;
4728                         }
4729                 }
4730         }
4731         label:
4732         if (0) {};
4733 #ifdef _POSIX_PRIORITY_SCHEDULING
4734         sched_yield();
4735         sched_yield();
4736 #endif
4737 }
4738 /* not reached */
4739 close (incomingSockfd);
4740 }
4741