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 nspace::hash_map<std::string, WhoWasUser*, nspace::hash<string>, StrHashComp> whowas_hash;
 187 typedef std::deque<command_t> command_table;
 188
 189 // This table references users by file descriptor.
 190 // its an array to make it VERY fast, as all lookups are referenced
 191 // by an integer, meaning there is no need for a scan/search operation.
 192 userrec* fd_ref_table[65536];
 193
 194 int statsAccept = 0, statsRefused = 0, statsUnknown = 0, statsCollisions = 0, statsDns = 0, statsDnsGood = 0, statsDnsBad = 0, statsConnects = 0, statsSent= 0, statsRecv = 0;
 195
 196 serverrec* me[32];
 197
 198 FILE *log_file;
 199
 200 user_hash clientlist;
 201 chan_hash chanlist;
 202 whowas_hash whowas;
 203 command_table cmdlist;
 204 file_cache MOTD;
 205 file_cache RULES;
 206 address_cache IP;
 207
 208 ClassVector Classes;
 209
 210 struct linger linger = { 0 };
 211 char MyExecutable[1024];
 212 int boundPortCount = 0;
 213 int portCount = 0, SERVERportCount = 0, ports[MAXSOCKS];
 214 int defaultRoute = 0;
 215 char ModPath[MAXBUF];
 216
 217 /* prototypes */
 218
 219 int has_channel(userrec *u, chanrec *c);
 220 int usercount(chanrec *c);
 221 int usercount_i(chanrec *c);
 222 char* Passwd(userrec *user);
 223 bool IsDenied(userrec *user);
 224 void AddWhoWas(userrec* u);
 225
 226 std::vector<long> auth_cookies;
 227 std::stringstream config_f(stringstream::in | stringstream::out);
 228
 229 std::vector<userrec*> all_opers;
 230
 231 static char already_sent[65536];
 232
 233 char lowermap[255];
 234
 235 void AddOper(userrec* user)
 236 {
 237         log(DEBUG,"Oper added to optimization list");
 238         all_opers.push_back(user);
 239 }
 240
 241 void DeleteOper(userrec* user)
 242 {
 243         for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 244         {
 245                 if (*a == user)
 246                 {
 247                         log(DEBUG,"Oper removed from optimization list");
 248                         all_opers.erase(a);
 249                         return;
 250                 }
 251         }
 252 }
 253
 254 long GetRevision()
 255 {
 256         char Revision[] = "$Revision$";
 257         char *s1 = Revision;
 258         char *savept;
 259         char *v2 = strtok_r(s1," ",&savept);
 260         s1 = savept;
 261         v2 = strtok_r(s1," ",&savept);
 262         s1 = savept;
 263         return (long)(atof(v2)*10000);
 264 }
 265
 266
 267 std::string getservername()
 268 {
 269         return ServerName;
 270 }
 271
 272 std::string getserverdesc()
 273 {
 274         return ServerDesc;
 275 }
 276
 277 std::string getnetworkname()
 278 {
 279         return Network;
 280 }
 281
 282 std::string getadminname()
 283 {
 284         return AdminName;
 285 }
 286
 287 std::string getadminemail()
 288 {
 289         return AdminEmail;
 290 }
 291
 292 std::string getadminnick()
 293 {
 294         return AdminNick;
 295 }
 296
 297 void log(int level,char *text, ...)
 298 {
 299         char textbuffer[MAXBUF];
 300         va_list argsPtr;
 301         time_t rawtime;
 302         struct tm * timeinfo;
 303         if (level < LogLevel)
 304                 return;
 305
 306         time(&rawtime);
 307         timeinfo = localtime (&rawtime);
 308
 309         if (log_file)
 310         {
 311                 char b[MAXBUF];
 312                 va_start (argsPtr, text);
 313                 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 314                 va_end(argsPtr);
 315                 strlcpy(b,asctime(timeinfo),MAXBUF);
 316                 b[24] = ':';    // we know this is the end of the time string
 317                 fprintf(log_file,"%s %s\n",b,textbuffer);
 318                 if (nofork)
 319                 {
 320                         // nofork enabled? display it on terminal too
 321                         printf("%s %s\n",b,textbuffer);
 322                 }
 323         }
 324 }
 325
 326 void readfile(file_cache &F, const char* fname)
 327 {
 328         FILE* file;
 329         char linebuf[MAXBUF];
 330
 331         log(DEBUG,"readfile: loading %s",fname);
 332         F.clear();
 333         file =  fopen(fname,"r");
 334         if (file)
 335         {
 336                 while (!feof(file))
 337                 {
 338                         fgets(linebuf,sizeof(linebuf),file);
 339                         linebuf[strlen(linebuf)-1]='\0';
 340                         if (linebuf[0] == 0)
 341                         {
 342                                 strcpy(linebuf,"  ");
 343                         }
 344                         if (!feof(file))
 345                         {
 346                                 F.push_back(linebuf);
 347                         }
 348                 }
 349                 fclose(file);
 350         }
 351         else
 352         {
 353                 log(DEBUG,"readfile: failed to load file: %s",fname);
 354         }
 355         log(DEBUG,"readfile: loaded %s, %lu lines",fname,(unsigned long)F.size());
 356 }
 357
 358 void ReadConfig(bool bail, userrec* user)
 359 {
 360         char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF],MW[MAXBUF];
 361         char AH[MAXBUF],AP[MAXBUF],AF[MAXBUF],DNT[MAXBUF],pfreq[MAXBUF],thold[MAXBUF],sqmax[MAXBUF],rqmax[MAXBUF];
 362         ConnectClass c;
 363         std::stringstream errstr;
 364
 365         if (!LoadConf(CONFIG_FILE,&config_f,&errstr))
 366         {
 367                 errstr.seekg(0);
 368                 if (bail)
 369                 {
 370                         printf("There were errors in your configuration:\n%s",errstr.str().c_str());
 371                         Exit(0);
 372                 }
 373                 else
 374                 {
 375                         char dataline[1024];
 376                         if (user)
 377                         {
 378                                 WriteServ(user->fd,"NOTICE %s :There were errors in the configuration file:",user->nick);
 379                                 while (!errstr.eof())
 380                                 {
 381                                         errstr.getline(dataline,1024);
 382                                         WriteServ(user->fd,"NOTICE %s :%s",user->nick,dataline);
 383                                 }
 384                         }
 385                         else
 386                         {
 387                                 WriteOpers("There were errors in the configuration file:",user->nick);
 388                                 while (!errstr.eof())
 389                                 {
 390                                         errstr.getline(dataline,1024);
 391                                         WriteOpers(dataline);
 392                                 }
 393                         }
 394                         return;
 395                 }
 396         }
 397
 398         ConfValue("server","name",0,ServerName,&config_f);
 399         ConfValue("server","description",0,ServerDesc,&config_f);
 400         ConfValue("server","network",0,Network,&config_f);
 401         ConfValue("admin","name",0,AdminName,&config_f);
 402         ConfValue("admin","email",0,AdminEmail,&config_f);
 403         ConfValue("admin","nick",0,AdminNick,&config_f);
 404         ConfValue("files","motd",0,motd,&config_f);
 405         ConfValue("files","rules",0,rules,&config_f);
 406         ConfValue("power","diepass",0,diepass,&config_f);
 407         ConfValue("power","pause",0,pauseval,&config_f);
 408         ConfValue("power","restartpass",0,restartpass,&config_f);
 409         ConfValue("options","prefixquit",0,PrefixQuit,&config_f);
 410         ConfValue("die","value",0,DieValue,&config_f);
 411         ConfValue("options","loglevel",0,dbg,&config_f);
 412         ConfValue("options","netbuffersize",0,NB,&config_f);
 413         ConfValue("options","maxwho",0,MW,&config_f);
 414         ConfValue("options","allowhalfop",0,AH,&config_f);
 415         ConfValue("options","allowprotect",0,AP,&config_f);
 416         ConfValue("options","allowfounder",0,AF,&config_f);
 417         ConfValue("dns","server",0,DNSServer,&config_f);
 418         ConfValue("dns","timeout",0,DNT,&config_f);
 419         ConfValue("options","moduledir",0,ModPath,&config_f);
 420         ConfValue("disabled","commands",0,DisabledCommands,&config_f);
 421
 422         NetBufferSize = atoi(NB);
 423         MaxWhoResults = atoi(MW);
 424         dns_timeout = atoi(DNT);
 425         if (!dns_timeout)
 426                 dns_timeout = 5;
 427         if (!DNSServer[0])
 428                 strlcpy(DNSServer,"127.0.0.1",MAXBUF);
 429         if (!ModPath[0])
 430                 strlcpy(ModPath,MOD_PATH,MAXBUF);
 431         AllowHalfop = ((!strcasecmp(AH,"true")) || (!strcasecmp(AH,"1")) || (!strcasecmp(AH,"yes")));
 432         AllowProtect = ((!strcasecmp(AP,"true")) || (!strcasecmp(AP,"1")) || (!strcasecmp(AP,"yes")));
 433         AllowFounder = ((!strcasecmp(AF,"true")) || (!strcasecmp(AF,"1")) || (!strcasecmp(AF,"yes")));
 434         if ((!NetBufferSize) || (NetBufferSize > 65535) || (NetBufferSize < 1024))
 435         {
 436                 log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
 437                 NetBufferSize = 10240;
 438         }
 439         if ((!MaxWhoResults) || (MaxWhoResults > 65535) || (MaxWhoResults < 1))
 440         {
 441                 log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128.");
 442                 MaxWhoResults = 128;
 443         }
 444         if (!strcmp(dbg,"debug"))
 445                 LogLevel = DEBUG;
 446         if (!strcmp(dbg,"verbose"))
 447                 LogLevel = VERBOSE;
 448         if (!strcmp(dbg,"default"))
 449                 LogLevel = DEFAULT;
 450         if (!strcmp(dbg,"sparse"))
 451                 LogLevel = SPARSE;
 452         if (!strcmp(dbg,"none"))
 453                 LogLevel = NONE;
 454         readfile(MOTD,motd);
 455         log(DEFAULT,"Reading message of the day...");
 456         readfile(RULES,rules);
 457         log(DEFAULT,"Reading connect classes...");
 458         Classes.clear();
 459         for (int i = 0; i < ConfValueEnum("connect",&config_f); i++)
 460         {
 461                 strcpy(Value,"");
 462                 ConfValue("connect","allow",i,Value,&config_f);
 463                 ConfValue("connect","timeout",i,timeout,&config_f);
 464                 ConfValue("connect","flood",i,flood,&config_f);
 465                 ConfValue("connect","pingfreq",i,pfreq,&config_f);
 466                 ConfValue("connect","threshold",i,thold,&config_f);
 467                 ConfValue("connect","sendq",i,sqmax,&config_f);
 468                 ConfValue("connect","recvq",i,rqmax,&config_f);
 469                 if (Value[0])
 470                 {
 471                         strlcpy(c.host,Value,MAXBUF);
 472                         c.type = CC_ALLOW;
 473                         strlcpy(Value,"",MAXBUF);
 474                         ConfValue("connect","password",i,Value,&config_f);
 475                         strlcpy(c.pass,Value,MAXBUF);
 476                         c.registration_timeout = 90; // default is 2 minutes
 477                         c.pingtime = 120;
 478                         c.flood = atoi(flood);
 479                         c.threshold = 5;
 480                         c.sendqmax = 262144; // 256k
 481                         c.recvqmax = 4096;   // 4k
 482                         if (atoi(thold)>0)
 483                         {
 484                                 c.threshold = atoi(thold);
 485                         }
 486                         if (atoi(sqmax)>0)
 487                         {
 488                                 c.sendqmax = atoi(sqmax);
 489                         }
 490                         if (atoi(rqmax)>0)
 491                         {
 492                                 c.recvqmax = atoi(rqmax);
 493                         }
 494                         if (atoi(timeout)>0)
 495                         {
 496                                 c.registration_timeout = atoi(timeout);
 497                         }
 498                         if (atoi(pfreq)>0)
 499                         {
 500                                 c.pingtime = atoi(pfreq);
 501                         }
 502                         Classes.push_back(c);
 503                         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);
 504                 }
 505                 else
 506                 {
 507                         ConfValue("connect","deny",i,Value,&config_f);
 508                         strlcpy(c.host,Value,MAXBUF);
 509                         c.type = CC_DENY;
 510                         Classes.push_back(c);
 511                         log(DEBUG,"Read connect class type DENY, host=%s",c.host);
 512                 }
 513
 514         }
 515         log(DEFAULT,"Reading K lines,Q lines and Z lines from config...");
 516         read_xline_defaults();
 517         log(DEFAULT,"Applying K lines, Q lines and Z lines...");
 518         apply_lines();
 519         log(DEFAULT,"Done reading configuration file, InspIRCd is now starting.");
 520         if (!bail)
 521         {
 522                 log(DEFAULT,"Adding and removing modules due to rehash...");
 523
 524                 std::vector<std::string> old_module_names, new_module_names, added_modules, removed_modules;
 525
 526                 // store the old module names
 527                 for (std::vector<std::string>::iterator t = module_names.begin(); t != module_names.end(); t++)
 528                 {
 529                         old_module_names.push_back(*t);
 530                 }
 531
 532                 // get the new module names
 533                 for (int count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
 534                 {
 535                         ConfValue("module","name",count2,Value,&config_f);
 536                         new_module_names.push_back(Value);
 537                 }
 538
 539                 // now create a list of new modules that are due to be loaded
 540                 // and a seperate list of modules which are due to be unloaded
 541                 for (std::vector<std::string>::iterator _new = new_module_names.begin(); _new != new_module_names.end(); _new++)
 542                 {
 543                         bool added = true;
 544                         for (std::vector<std::string>::iterator old = old_module_names.begin(); old != old_module_names.end(); old++)
 545                         {
 546                                 if (*old == *_new)
 547                                         added = false;
 548                         }
 549                         if (added)
 550                                 added_modules.push_back(*_new);
 551                 }
 552                 for (std::vector<std::string>::iterator oldm = old_module_names.begin(); oldm != old_module_names.end(); oldm++)
 553                 {
 554                         bool removed = true;
 555                         for (std::vector<std::string>::iterator newm = new_module_names.begin(); newm != new_module_names.end(); newm++)
 556                         {
 557                                 if (*newm == *oldm)
 558                                         removed = false;
 559                         }
 560                         if (removed)
 561                                 removed_modules.push_back(*oldm);
 562                 }
 563                 // now we have added_modules, a vector of modules to be loaded, and removed_modules, a vector of modules
 564                 // to be removed.
 565                 int rem = 0, add = 0;
 566                 if (!removed_modules.empty())
 567                 for (std::vector<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 568                 {
 569                         if (UnloadModule(removing->c_str()))
 570                         {
 571                                 WriteOpers("*** REHASH UNLOADED MODULE: %s",removing->c_str());
 572                                 WriteServ(user->fd,"973 %s %s :Module %s successfully unloaded.",user->nick, removing->c_str(), removing->c_str());
 573                                 rem++;
 574                         }
 575                         else
 576                         {
 577                                 WriteServ(user->fd,"972 %s %s :Failed to unload module %s: %s",user->nick, removing->c_str(), removing->c_str(), ModuleError());
 578                         }
 579                 }
 580                 if (!added_modules.empty())
 581                 for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 582                 {
 583                         if (LoadModule(adding->c_str()))
 584                         {
 585                                 WriteOpers("*** REHASH LOADED MODULE: %s",adding->c_str());
 586                                 WriteServ(user->fd,"975 %s %s :Module %s successfully loaded.",user->nick, adding->c_str(), adding->c_str());
 587                                 add++;
 588                         }
 589                         else
 590                         {
 591                                 WriteServ(user->fd,"974 %s %s :Failed to load module %s: %s",user->nick, adding->c_str(), adding->c_str(), ModuleError());
 592                         }
 593                 }
 594                 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());
 595         }
 596 }
 597
 598 /* write formatted text to a socket, in same format as printf
 599  * New in 1.0 Beta 5 - Nothing is written directly to a users fd any more.
 600  * Instead, data builds up in the users sendq and each time around the mainloop
 601  * this data is flushed to the user's socket (see userrec::FlushWriteBuf).
 602  */
 603
 604 void Write(int sock,char *text, ...)
 605 {
 606         if (sock < 0)
 607                 return;
 608         if (!text)
 609         {
 610                 log(DEFAULT,"*** BUG *** Write was given an invalid parameter");
 611                 return;
 612         }
 613         char textbuffer[MAXBUF];
 614         va_list argsPtr;
 615         char tb[MAXBUF];
 616         int res;
 617
 618         va_start (argsPtr, text);
 619         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 620         va_end(argsPtr);
 621         int bytes = snprintf(tb,MAXBUF,"%s\r\n",textbuffer);
 622         chop(tb);
 623         if (fd_ref_table[sock])
 624         {
 625                 int MOD_RESULT = 0;
 626                 FOREACH_RESULT(OnRawSocketWrite(sock,tb,bytes));
 627                 fd_ref_table[sock]->AddWriteBuf(tb);
 628                 statsSent += bytes;
 629         }
 630         else log(DEFAULT,"ERROR! attempted write to a user with no fd_ref_table entry!!!");
 631 }
 632
 633 /* write a server formatted numeric response to a single socket */
 634
 635 void WriteServ(int sock, char* text, ...)
 636 {
 637         if (sock < 0)
 638                 return;
 639         if (!text)
 640         {
 641                 log(DEFAULT,"*** BUG *** WriteServ was given an invalid parameter");
 642                 return;
 643         }
 644         char textbuffer[MAXBUF],tb[MAXBUF];
 645         int res;
 646         va_list argsPtr;
 647         va_start (argsPtr, text);
 648
 649         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 650         va_end(argsPtr);
 651         int bytes = snprintf(tb,MAXBUF,":%s %s\r\n",ServerName,textbuffer);
 652         chop(tb);
 653         if (fd_ref_table[sock])
 654         {
 655                 int MOD_RESULT = 0;
 656                 FOREACH_RESULT(OnRawSocketWrite(sock,tb,bytes));
 657                 fd_ref_table[sock]->AddWriteBuf(tb);
 658                 statsSent += bytes;
 659         }
 660         else log(DEFAULT,"ERROR! attempted write to a user with no fd_ref_table entry!!!");
 661 }
 662
 663 /* write text from an originating user to originating user */
 664
 665 void WriteFrom(int sock, userrec *user,char* text, ...)
 666 {
 667         if (sock < 0)
 668                 return;
 669         if ((!text) || (!user))
 670         {
 671                 log(DEFAULT,"*** BUG *** WriteFrom was given an invalid parameter");
 672                 return;
 673         }
 674         char textbuffer[MAXBUF],tb[MAXBUF];
 675         va_list argsPtr;
 676         int res;
 677         va_start (argsPtr, text);
 678
 679         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 680         va_end(argsPtr);
 681         int bytes = snprintf(tb,MAXBUF,":%s!%s@%s %s\r\n",user->nick,user->ident,user->dhost,textbuffer);
 682         chop(tb);
 683         if (fd_ref_table[sock])
 684         {
 685                 int MOD_RESULT = 0;
 686                 FOREACH_RESULT(OnRawSocketWrite(sock,tb,bytes));
 687                 fd_ref_table[sock]->AddWriteBuf(tb);
 688                 statsSent += bytes;
 689         }
 690         else log(DEFAULT,"ERROR! attempted write to a user with no fd_ref_table entry!!!");
 691 }
 692
 693 /* write text to an destination user from a source user (e.g. user privmsg) */
 694
 695 void WriteTo(userrec *source, userrec *dest,char *data, ...)
 696 {
 697         if ((!dest) || (!data))
 698         {
 699                 log(DEFAULT,"*** BUG *** WriteTo was given an invalid parameter");
 700                 return;
 701         }
 702         if (dest->fd == FD_MAGIC_NUMBER)
 703                 return;
 704         char textbuffer[MAXBUF],tb[MAXBUF];
 705         va_list argsPtr;
 706         va_start (argsPtr, data);
 707         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
 708         va_end(argsPtr);
 709         chop(tb);
 710
 711         // if no source given send it from the server.
 712         if (!source)
 713         {
 714                 WriteServ(dest->fd,":%s %s",ServerName,textbuffer);
 715         }
 716         else
 717         {
 718                 WriteFrom(dest->fd,source,"%s",textbuffer);
 719         }
 720 }
 721
 722 /* write formatted text from a source user to all users on a channel
 723  * including the sender (NOT for privmsg, notice etc!) */
 724
 725 void WriteChannel(chanrec* Ptr, userrec* user, char* text, ...)
 726 {
 727         if ((!Ptr) || (!user) || (!text))
 728         {
 729                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 730                 return;
 731         }
 732         char textbuffer[MAXBUF];
 733         va_list argsPtr;
 734         va_start (argsPtr, text);
 735         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 736         va_end(argsPtr);
 737
 738         std::vector<char*> *ulist = Ptr->GetUsers();
 739         for (int j = 0; j < ulist->size(); j++)
 740         {
 741                 char* o = (*ulist)[j];
 742                 userrec* otheruser = (userrec*)o;
 743                 if (otheruser->fd != FD_MAGIC_NUMBER)
 744                         WriteTo(user,otheruser,"%s",textbuffer);
 745         }
 746 }
 747
 748 /* write formatted text from a source user to all users on a channel
 749  * including the sender (NOT for privmsg, notice etc!) doesnt send to
 750  * users on remote servers */
 751
 752 void WriteChannelLocal(chanrec* Ptr, userrec* user, char* text, ...)
 753 {
 754         if ((!Ptr) || (!text))
 755         {
 756                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 757                 return;
 758         }
 759         char textbuffer[MAXBUF];
 760         va_list argsPtr;
 761         va_start (argsPtr, text);
 762         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 763         va_end(argsPtr);
 764
 765         std::vector<char*> *ulist = Ptr->GetUsers();
 766         for (int j = 0; j < ulist->size(); j++)
 767         {
 768                 char* o = (*ulist)[j];
 769                 userrec* otheruser = (userrec*)o;
 770                 if ((otheruser->fd != FD_MAGIC_NUMBER) && (otheruser->fd != -1) && (otheruser != user))
 771                 {
 772                         if (!user)
 773                         {
 774                                 WriteServ(otheruser->fd,"%s",textbuffer);
 775                         }
 776                         else
 777                         {
 778                                 WriteTo(user,otheruser,"%s",textbuffer);
 779                         }
 780                 }
 781         }
 782 }
 783
 784
 785 void WriteChannelWithServ(char* ServName, chanrec* Ptr, char* text, ...)
 786 {
 787         if ((!Ptr) || (!text))
 788         {
 789                 log(DEFAULT,"*** BUG *** WriteChannelWithServ was given an invalid parameter");
 790                 return;
 791         }
 792         char textbuffer[MAXBUF];
 793         va_list argsPtr;
 794         va_start (argsPtr, text);
 795         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 796         va_end(argsPtr);
 797
 798
 799         std::vector<char*> *ulist = Ptr->GetUsers();
 800         for (int j = 0; j < ulist->size(); j++)
 801         {
 802                 char* o = (*ulist)[j];
 803                 userrec* otheruser = (userrec*)o;
 804                 if (otheruser->fd != FD_MAGIC_NUMBER)
 805                         WriteServ(otheruser->fd,"%s",textbuffer);
 806         }
 807 }
 808
 809
 810 /* write formatted text from a source user to all users on a channel except
 811  * for the sender (for privmsg etc) */
 812
 813 void ChanExceptSender(chanrec* Ptr, userrec* user, char* text, ...)
 814 {
 815         if ((!Ptr) || (!user) || (!text))
 816         {
 817                 log(DEFAULT,"*** BUG *** ChanExceptSender was given an invalid parameter");
 818                 return;
 819         }
 820         char textbuffer[MAXBUF];
 821         va_list argsPtr;
 822         va_start (argsPtr, text);
 823         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 824         va_end(argsPtr);
 825
 826         std::vector<char*> *ulist = Ptr->GetUsers();
 827         for (int j = 0; j < ulist->size(); j++)
 828         {
 829                 char* o = (*ulist)[j];
 830                 userrec* otheruser = (userrec*)o;
 831                 if ((otheruser->fd != FD_MAGIC_NUMBER) && (user != otheruser))
 832                         WriteFrom(otheruser->fd,user,"%s",textbuffer);
 833         }
 834 }
 835
 836
 837 std::string GetServerDescription(char* servername)
 838 {
 839         for (int j = 0; j < 32; j++)
 840         {
 841                 if (me[j] != NULL)
 842                 {
 843                         for (int k = 0; k < me[j]->connectors.size(); k++)
 844                         {
 845                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),servername))
 846                                 {
 847                                         return me[j]->connectors[k].GetDescription();
 848                                 }
 849                         }
 850                 }
 851                 return ServerDesc; // not a remote server that can be found, it must be me.
 852         }
 853 }
 854
 855
 856 /* write a formatted string to all users who share at least one common
 857  * channel, including the source user e.g. for use in NICK */
 858
 859 void WriteCommon(userrec *u, char* text, ...)
 860 {
 861         if (!u)
 862         {
 863                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 864                 return;
 865         }
 866
 867         if (u->registered != 7) {
 868                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 869                 return;
 870         }
 871
 872         char textbuffer[MAXBUF];
 873         va_list argsPtr;
 874         va_start (argsPtr, text);
 875         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 876         va_end(argsPtr);
 877
 878         // FIX: Stops a message going to the same person more than once
 879         bzero(&already_sent,65536);
 880
 881         bool sent_to_at_least_one = false;
 882
 883         for (int i = 0; i < MAXCHANS; i++)
 884         {
 885                 if (u->chans[i].channel)
 886                 {
 887                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 888                         for (int j = 0; j < ulist->size(); j++)
 889                         {
 890                                 char* o = (*ulist)[j];
 891                                 userrec* otheruser = (userrec*)o;
 892                                 if ((otheruser->fd > 0) && (!already_sent[otheruser->fd]))
 893                                 {
 894                                         already_sent[otheruser->fd] = 1;
 895                                         WriteFrom(otheruser->fd,u,"%s",textbuffer);
 896                                         sent_to_at_least_one = true;
 897                                 }
 898                         }
 899                 }
 900         }
 901         // if the user was not in any channels, no users will receive the text. Make sure the user
 902         // receives their OWN message for WriteCommon
 903         if (!sent_to_at_least_one)
 904         {
 905                 WriteFrom(u->fd,u,"%s",textbuffer);
 906         }
 907 }
 908
 909 /* write a formatted string to all users who share at least one common
 910  * channel, NOT including the source user e.g. for use in QUIT */
 911
 912 void WriteCommonExcept(userrec *u, char* text, ...)
 913 {
 914         if (!u)
 915         {
 916                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 917                 return;
 918         }
 919
 920         if (u->registered != 7) {
 921                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 922                 return;
 923         }
 924
 925         char textbuffer[MAXBUF];
 926         va_list argsPtr;
 927         va_start (argsPtr, text);
 928         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 929         va_end(argsPtr);
 930
 931         bzero(&already_sent,65536);
 932
 933         for (int i = 0; i < MAXCHANS; i++)
 934         {
 935                 if (u->chans[i].channel)
 936                 {
 937                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 938                         for (int j = 0; j < ulist->size(); j++)
 939                         {
 940                                 char* o = (*ulist)[j];
 941                                 userrec* otheruser = (userrec*)o;
 942                                 if (u != otheruser)
 943                                 {
 944                                         if ((otheruser->fd > 0) && (!already_sent[otheruser->fd]))
 945                                         {
 946                                                 already_sent[otheruser->fd] = 1;
 947                                                 WriteFrom(otheruser->fd,u,"%s",textbuffer);
 948                                         }
 949                                 }
 950                         }
 951                 }
 952         }
 953 }
 954
 955 void WriteOpers(char* text, ...)
 956 {
 957         if (!text)
 958         {
 959                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 960                 return;
 961         }
 962
 963         char textbuffer[MAXBUF];
 964         va_list argsPtr;
 965         va_start (argsPtr, text);
 966         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 967         va_end(argsPtr);
 968
 969         for (std::vector<userrec*>::iterator i = all_opers.begin(); i != all_opers.end(); i++)
 970         {
 971                 userrec* a = *i;
 972                 if ((a) && (a->fd != FD_MAGIC_NUMBER))
 973                 {
 974                         if (strchr(a->modes,'s'))
 975                         {
 976                                 // send server notices to all with +s
 977                                 WriteServ(a->fd,"NOTICE %s :%s",a->nick,textbuffer);
 978                         }
 979                 }
 980         }
 981 }
 982
 983 void NoticeAllOpers(userrec *source, bool local_only, char* text, ...)
 984 {
 985         if ((!text) || (!source))
 986         {
 987                 log(DEFAULT,"*** BUG *** NoticeAllOpers was given an invalid parameter");
 988                 return;
 989         }
 990
 991         char textbuffer[MAXBUF];
 992         va_list argsPtr;
 993         va_start (argsPtr, text);
 994         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 995         va_end(argsPtr);
 996
 997         for (std::vector<userrec*>::iterator i = all_opers.begin(); i != all_opers.end(); i++)
 998         {
 999                 userrec* a = *i;
1000                 if ((a) && (a->fd != FD_MAGIC_NUMBER))
1001                 {
1002                         if (strchr(a->modes,'s'))
1003                         {
1004                                 // send server notices to all with +s
1005                                 WriteServ(a->fd,"NOTICE %s :*** Notice From %s: %s",a->nick,source->nick,textbuffer);
1006                         }
1007                 }
1008         }
1009
1010         if (!local_only)
1011         {
1012                 char buffer[MAXBUF];
1013                 snprintf(buffer,MAXBUF,"V %s @* :%s",source->nick,textbuffer);
1014                 NetSendToAll(buffer);
1015         }
1016 }
1017
1018 // returns TRUE of any users on channel C occupy server 'servername'.
1019
1020 bool ChanAnyOnThisServer(chanrec *c,char* servername)
1021 {
1022         log(DEBUG,"ChanAnyOnThisServer");
1023
1024         std::vector<char*> *ulist = c->GetUsers();
1025         for (int j = 0; j < ulist->size(); j++)
1026         {
1027                 char* o = (*ulist)[j];
1028                 userrec* user = (userrec*)o;
1029                 if (!strcasecmp(user->server,servername))
1030                         return true;
1031         }
1032         return false;
1033 }
1034
1035 // returns true if user 'u' shares any common channels with any users on server 'servername'
1036
1037 bool CommonOnThisServer(userrec* u,const char* servername)
1038 {
1039         log(DEBUG,"ChanAnyOnThisServer");
1040
1041         for (int i = 0; i < MAXCHANS; i++)
1042         {
1043                 if (u->chans[i].channel)
1044                 {
1045                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
1046                         for (int j = 0; j < ulist->size(); j++)
1047                         {
1048                                 char* o = (*ulist)[j];
1049                                 userrec* user = (userrec*)o;
1050                                 if (!strcasecmp(user->server,servername))
1051                                         return true;
1052                         }
1053                 }
1054         }
1055         return false;
1056 }
1057
1058
1059 void NetSendToCommon(userrec* u, char* s)
1060 {
1061         char buffer[MAXBUF];
1062         snprintf(buffer,MAXBUF,"%s %s",CreateSum().c_str(),s);
1063
1064         log(DEBUG,"NetSendToCommon: '%s' '%s'",u->nick,s);
1065
1066         std::string msg = buffer;
1067         FOREACH_MOD OnPacketTransmit(msg,s);
1068         strlcpy(buffer,msg.c_str(),MAXBUF);
1069
1070         for (int j = 0; j < 32; j++)
1071         {
1072                 if (me[j] != NULL)
1073                 {
1074                         for (int k = 0; k < me[j]->connectors.size(); k++)
1075                         {
1076                                 if (CommonOnThisServer(u,me[j]->connectors[k].GetServerName().c_str()))
1077                                 {
1078                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1079                                 }
1080                         }
1081                 }
1082         }
1083 }
1084
1085
1086 void NetSendToAll(char* s)
1087 {
1088         char buffer[MAXBUF];
1089         snprintf(buffer,MAXBUF,"%s %s",CreateSum().c_str(),s);
1090
1091         log(DEBUG,"NetSendToAll: '%s'",s);
1092
1093         std::string msg = buffer;
1094         FOREACH_MOD OnPacketTransmit(msg,s);
1095         strlcpy(buffer,msg.c_str(),MAXBUF);
1096
1097         for (int j = 0; j < 32; j++)
1098         {
1099                 if (me[j] != NULL)
1100                 {
1101                         for (int k = 0; k < me[j]->connectors.size(); k++)
1102                         {
1103                                 me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1104                         }
1105                 }
1106         }
1107 }
1108
1109 void NetSendToAll_WithSum(char* s,char* u)
1110 {
1111         char buffer[MAXBUF];
1112         snprintf(buffer,MAXBUF,":%s %s",u,s);
1113
1114         log(DEBUG,"NetSendToAll: '%s'",s);
1115
1116         std::string msg = buffer;
1117         FOREACH_MOD OnPacketTransmit(msg,s);
1118         strlcpy(buffer,msg.c_str(),MAXBUF);
1119
1120         for (int j = 0; j < 32; j++)
1121         {
1122                 if (me[j] != NULL)
1123                 {
1124                         for (int k = 0; k < me[j]->connectors.size(); k++)
1125                         {
1126                                 me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1127                         }
1128                 }
1129         }
1130 }
1131
1132 void NetSendToAllAlive(char* s)
1133 {
1134         char buffer[MAXBUF];
1135         snprintf(buffer,MAXBUF,"%s %s",CreateSum().c_str(),s);
1136
1137         log(DEBUG,"NetSendToAllAlive: '%s'",s);
1138
1139         std::string msg = buffer;
1140         FOREACH_MOD OnPacketTransmit(msg,s);
1141         strlcpy(buffer,msg.c_str(),MAXBUF);
1142
1143         for (int j = 0; j < 32; j++)
1144         {
1145                 if (me[j] != NULL)
1146                 {
1147                         for (int k = 0; k < me[j]->connectors.size(); k++)
1148                         {
1149                                 if (me[j]->connectors[k].GetState() != STATE_DISCONNECTED)
1150                                 {
1151                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1152                                 }
1153                                 else
1154                                 {
1155                                         log(DEBUG,"%s is dead, not sending to it.",me[j]->connectors[k].GetServerName().c_str());
1156                                 }
1157                         }
1158                 }
1159         }
1160 }
1161
1162
1163 void NetSendToOne(char* target,char* s)
1164 {
1165         char buffer[MAXBUF];
1166         snprintf(buffer,MAXBUF,"%s %s",CreateSum().c_str(),s);
1167
1168         log(DEBUG,"NetSendToOne: '%s' '%s'",target,s);
1169
1170         std::string msg = buffer;
1171         FOREACH_MOD OnPacketTransmit(msg,s);
1172         strlcpy(buffer,msg.c_str(),MAXBUF);
1173
1174         for (int j = 0; j < 32; j++)
1175         {
1176                 if (me[j] != NULL)
1177                 {
1178                         for (int k = 0; k < me[j]->connectors.size(); k++)
1179                         {
1180                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1181                                 {
1182                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1183                                 }
1184                         }
1185                 }
1186         }
1187 }
1188
1189 void NetSendToAllExcept(const char* target,char* s)
1190 {
1191         char buffer[MAXBUF];
1192         snprintf(buffer,MAXBUF,"%s %s",CreateSum().c_str(),s);
1193
1194         log(DEBUG,"NetSendToAllExcept: '%s' '%s'",target,s);
1195
1196         std::string msg = buffer;
1197         FOREACH_MOD OnPacketTransmit(msg,s);
1198         strlcpy(buffer,msg.c_str(),MAXBUF);
1199
1200         for (int j = 0; j < 32; j++)
1201         {
1202                 if (me[j] != NULL)
1203                 {
1204                         for (int k = 0; k < me[j]->connectors.size(); k++)
1205                         {
1206                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1207                                 {
1208                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1209                                 }
1210                         }
1211                 }
1212         }
1213 }
1214
1215 void NetSendToAllExcept_WithSum(const char* target,char* s,char* u)
1216 {
1217         char buffer[MAXBUF];
1218         snprintf(buffer,MAXBUF,":%s %s",u,s);
1219
1220         log(DEBUG,"NetSendToAllExcept: '%s' '%s'",target,s);
1221
1222         std::string msg = buffer;
1223         FOREACH_MOD OnPacketTransmit(msg,s);
1224         strlcpy(buffer,msg.c_str(),MAXBUF);
1225
1226         for (int j = 0; j < 32; j++)
1227         {
1228                 if (me[j] != NULL)
1229                 {
1230                         for (int k = 0; k < me[j]->connectors.size(); k++)
1231                         {
1232                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1233                                 {
1234                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1235                                 }
1236                         }
1237                 }
1238         }
1239 }
1240
1241
1242 void WriteMode(const char* modes, int flags, const char* text, ...)
1243 {
1244         if ((!text) || (!modes) || (!flags))
1245         {
1246                 log(DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
1247                 return;
1248         }
1249
1250         char textbuffer[MAXBUF];
1251         va_list argsPtr;
1252         va_start (argsPtr, text);
1253         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1254         va_end(argsPtr);
1255         int modelen = strlen(modes);
1256
1257         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1258         {
1259                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1260                 {
1261                         bool send_to_user = false;
1262
1263                         if (flags == WM_AND)
1264                         {
1265                                 send_to_user = true;
1266                                 for (int n = 0; n < modelen; n++)
1267                                 {
1268                                         if (!hasumode(i->second,modes[n]))
1269                                         {
1270                                                 send_to_user = false;
1271                                                 break;
1272                                         }
1273                                 }
1274                         }
1275                         else if (flags == WM_OR)
1276                         {
1277                                 send_to_user = false;
1278                                 for (int n = 0; n < modelen; n++)
1279                                 {
1280                                         if (hasumode(i->second,modes[n]))
1281                                         {
1282                                                 send_to_user = true;
1283                                                 break;
1284                                         }
1285                                 }
1286                         }
1287
1288                         if (send_to_user)
1289                         {
1290                                 WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
1291                         }
1292                 }
1293         }
1294 }
1295
1296
1297 void NoticeAll(userrec *source, bool local_only, char* text, ...)
1298 {
1299         if ((!text) || (!source))
1300         {
1301                 log(DEFAULT,"*** BUG *** NoticeAll was given an invalid parameter");
1302                 return;
1303         }
1304
1305         char textbuffer[MAXBUF];
1306         va_list argsPtr;
1307         va_start (argsPtr, text);
1308         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1309         va_end(argsPtr);
1310
1311         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1312         {
1313                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1314                 {
1315                         WriteFrom(i->second->fd,source,"NOTICE $* :%s",textbuffer);
1316                 }
1317         }
1318
1319         if (!local_only)
1320         {
1321                 char buffer[MAXBUF];
1322                 snprintf(buffer,MAXBUF,"V %s * :%s",source->nick,textbuffer);
1323                 NetSendToAll(buffer);
1324         }
1325
1326 }
1327
1328 void WriteWallOps(userrec *source, bool local_only, char* text, ...)
1329 {
1330         if ((!text) || (!source))
1331         {
1332                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
1333                 return;
1334         }
1335
1336         char textbuffer[MAXBUF];
1337         va_list argsPtr;
1338         va_start (argsPtr, text);
1339         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1340         va_end(argsPtr);
1341
1342         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1343         {
1344                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1345                 {
1346                         if (strchr(i->second->modes,'w'))
1347                         {
1348                                 WriteTo(source,i->second,"WALLOPS :%s",textbuffer);
1349                         }
1350                 }
1351         }
1352
1353         if (!local_only)
1354         {
1355                 char buffer[MAXBUF];
1356                 snprintf(buffer,MAXBUF,"@ %s :%s",source->nick,textbuffer);
1357                 NetSendToAll(buffer);
1358         }
1359 }
1360
1361 /* convert a string to lowercase. Note following special circumstances
1362  * taken from RFC 1459. Many "official" server branches still hold to this
1363  * rule so i will too;
1364  *
1365  *  Because of IRC's scandanavian origin, the characters {}| are
1366  *  considered to be the lower case equivalents of the characters []\,
1367  *  respectively. This is a critical issue when determining the
1368  *  equivalence of two nicknames.
1369  */
1370
1371 void strlower(char *n)
1372 {
1373         if (n)
1374         {
1375                 for (char* t = n; *t; t++)
1376                         *t = lowermap[*t];
1377         }
1378 }
1379
1380
1381
1382 /* Find a user record by nickname and return a pointer to it */
1383
1384 userrec* Find(std::string nick)
1385 {
1386         user_hash::iterator iter = clientlist.find(nick);
1387
1388         if (iter == clientlist.end())
1389                 /* Couldn't find it */
1390                 return NULL;
1391
1392         return iter->second;
1393 }
1394
1395 /* find a channel record by channel name and return a pointer to it */
1396
1397 chanrec* FindChan(const char* chan)
1398 {
1399         if (!chan)
1400         {
1401                 log(DEFAULT,"*** BUG *** Findchan was given an invalid parameter");
1402                 return NULL;
1403         }
1404
1405         chan_hash::iterator iter = chanlist.find(chan);
1406
1407         if (iter == chanlist.end())
1408                 /* Couldn't find it */
1409                 return NULL;
1410
1411         return iter->second;
1412 }
1413
1414
1415 long GetMaxBans(char* name)
1416 {
1417         char CM[MAXBUF];
1418         for (int count = 0; count < ConfValueEnum("banlist",&config_f); count++)
1419         {
1420                 ConfValue("banlist","chan",count,CM,&config_f);
1421                 if (match(name,CM))
1422                 {
1423                         ConfValue("banlist","limit",count,CM,&config_f);
1424                         return atoi(CM);
1425                 }
1426         }
1427         return 64;
1428 }
1429
1430
1431 void purge_empty_chans(userrec* u)
1432 {
1433
1434         int go_again = 1, purge = 0;
1435
1436         // firstly decrement the count on each channel
1437         for (int f = 0; f < MAXCHANS; f++)
1438         {
1439                 if (u->chans[f].channel)
1440                 {
1441                         u->chans[f].channel->DelUser((char*)u);
1442                 }
1443         }
1444
1445         for (int i = 0; i < MAXCHANS; i++)
1446         {
1447                 if (u->chans[i].channel)
1448                 {
1449                         if (!usercount(u->chans[i].channel))
1450                         {
1451                                 chan_hash::iterator i2 = chanlist.find(u->chans[i].channel->name);
1452                                 /* kill the record */
1453                                 if (i2 != chanlist.end())
1454                                 {
1455                                         log(DEBUG,"del_channel: destroyed: %s",i2->second->name);
1456                                         if (i2->second)
1457                                                 delete i2->second;
1458                                         chanlist.erase(i2);
1459                                         go_again = 1;
1460                                         purge++;
1461                                         u->chans[i].channel = NULL;
1462                                 }
1463                         }
1464                         else
1465                         {
1466                                 log(DEBUG,"skipped purge for %s",u->chans[i].channel->name);
1467                         }
1468                 }
1469         }
1470         log(DEBUG,"completed channel purge, killed %lu",(unsigned long)purge);
1471
1472         DeleteOper(u);
1473 }
1474
1475
1476 char scratch[MAXBUF];
1477 char sparam[MAXBUF];
1478
1479 char* chanmodes(chanrec *chan)
1480 {
1481         if (!chan)
1482         {
1483                 log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
1484                 strcpy(scratch,"");
1485                 return scratch;
1486         }
1487
1488         strcpy(scratch,"");
1489         strcpy(sparam,"");
1490         if (chan->binarymodes & CM_NOEXTERNAL)
1491         {
1492                 strlcat(scratch,"n",MAXMODES);
1493         }
1494         if (chan->binarymodes & CM_TOPICLOCK)
1495         {
1496                 strlcat(scratch,"t",MAXMODES);
1497         }
1498         if (chan->key[0])
1499         {
1500                 strlcat(scratch,"k",MAXMODES);
1501         }
1502         if (chan->limit)
1503         {
1504                 strlcat(scratch,"l",MAXMODES);
1505         }
1506         if (chan->binarymodes & CM_INVITEONLY)
1507         {
1508                 strlcat(scratch,"i",MAXMODES);
1509         }
1510         if (chan->binarymodes & CM_MODERATED)
1511         {
1512                 strlcat(scratch,"m",MAXMODES);
1513         }
1514         if (chan->binarymodes & CM_SECRET)
1515         {
1516                 strlcat(scratch,"s",MAXMODES);
1517         }
1518         if (chan->binarymodes & CM_PRIVATE)
1519         {
1520                 strlcat(scratch,"p",MAXMODES);
1521         }
1522         if (chan->key[0])
1523         {
1524                 strlcat(sparam," ",MAXBUF);
1525                 strlcat(sparam,chan->key,MAXBUF);
1526         }
1527         if (chan->limit)
1528         {
1529                 char foo[24];
1530                 sprintf(foo," %lu",(unsigned long)chan->limit);
1531                 strlcat(sparam,foo,MAXBUF);
1532         }
1533         if (*chan->custom_modes)
1534         {
1535                 strlcat(scratch,chan->custom_modes,MAXMODES);
1536                 for (int z = 0; chan->custom_modes[z] != 0; z++)
1537                 {
1538                         std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
1539                         if (extparam != "")
1540                         {
1541                                 strlcat(sparam," ",MAXBUF);
1542                                 strlcat(sparam,extparam.c_str(),MAXBUF);
1543                         }
1544                 }
1545         }
1546         log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam);
1547         strlcat(scratch,sparam,MAXMODES);
1548         return scratch;
1549 }
1550
1551
1552 /* compile a userlist of a channel into a string, each nick seperated by
1553  * spaces and op, voice etc status shown as @ and + */
1554
1555 void userlist(userrec *user,chanrec *c)
1556 {
1557         if ((!c) || (!user))
1558         {
1559                 log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
1560                 return;
1561         }
1562
1563         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1564
1565         std::vector<char*> *ulist = c->GetUsers();
1566         for (int i = 0; i < ulist->size(); i++)
1567         {
1568                 char* o = (*ulist)[i];
1569                 userrec* otheruser = (userrec*)o;
1570                 if ((!has_channel(user,c)) && (strchr(otheruser->modes,'i')))
1571                 {
1572                         /* user is +i, and source not on the channel, does not show
1573                          * nick in NAMES list */
1574                         continue;
1575                 }
1576                 strlcat(list,cmode(otheruser,c),MAXBUF);
1577                 strlcat(list,otheruser->nick,MAXBUF);
1578                 strlcat(list," ",MAXBUF);
1579                 if (strlen(list)>(480-NICKMAX))
1580                 {
1581                         /* list overflowed into
1582                          * multiple numerics */
1583                         WriteServ(user->fd,"%s",list);
1584                         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1585                 }
1586         }
1587         /* if whats left in the list isnt empty, send it */
1588         if (list[strlen(list)-1] != ':')
1589         {
1590                 WriteServ(user->fd,"%s",list);
1591         }
1592 }
1593
1594 /* return a count of the users on a specific channel accounting for
1595  * invisible users who won't increase the count. e.g. for /LIST */
1596
1597 int usercount_i(chanrec *c)
1598 {
1599         int count = 0;
1600
1601         if (!c)
1602         {
1603                 log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
1604                 return 0;
1605         }
1606
1607         strcpy(list,"");
1608         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1609         {
1610                 if (i->second)
1611                 {
1612                         if (has_channel(i->second,c))
1613                         {
1614                                 if (isnick(i->second->nick))
1615                                 {
1616                                         if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1617                                         {
1618                                                 /* user is +i, and source not on the channel, does not show
1619                                                  * nick in NAMES list */
1620                                                 continue;
1621                                         }
1622                                         count++;
1623                                 }
1624                         }
1625                 }
1626         }
1627         log(DEBUG,"usercount_i: %s %lu",c->name,(unsigned long)count);
1628         return count;
1629 }
1630
1631
1632 int usercount(chanrec *c)
1633 {
1634         if (!c)
1635         {
1636                 log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
1637                 return 0;
1638         }
1639         int count = c->GetUserCounter();
1640         log(DEBUG,"usercount: %s %lu",c->name,(unsigned long)count);
1641         return count;
1642 }
1643
1644
1645 /* add a channel to a user, creating the record for it if needed and linking
1646  * it to the user record */
1647
1648 chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
1649 {
1650         if ((!user) || (!cn))
1651         {
1652                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
1653                 return 0;
1654         }
1655
1656         chanrec* Ptr;
1657         int created = 0;
1658         char cname[MAXBUF];
1659
1660         strncpy(cname,cn,MAXBUF);
1661
1662         // we MUST declare this wherever we use FOREACH_RESULT
1663         int MOD_RESULT = 0;
1664
1665         if (strlen(cname) > CHANMAX-1)
1666         {
1667                 cname[CHANMAX-1] = '\0';
1668         }
1669
1670         log(DEBUG,"add_channel: %s %s",user->nick,cname);
1671
1672         if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
1673         {
1674                 return NULL; // already on the channel!
1675         }
1676
1677
1678         if (!FindChan(cname))
1679         {
1680                 MOD_RESULT = 0;
1681                 FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
1682                 if (MOD_RESULT == 1) {
1683                         return NULL;
1684                 }
1685
1686                 /* create a new one */
1687                 log(DEBUG,"add_channel: creating: %s",cname);
1688                 {
1689                         chanlist[cname] = new chanrec();
1690
1691                         strlcpy(chanlist[cname]->name, cname,CHANMAX);
1692                         chanlist[cname]->binarymodes = CM_TOPICLOCK | CM_NOEXTERNAL;
1693                         chanlist[cname]->created = TIME;
1694                         strcpy(chanlist[cname]->topic, "");
1695                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
1696                         chanlist[cname]->topicset = 0;
1697                         Ptr = chanlist[cname];
1698                         log(DEBUG,"add_channel: created: %s",cname);
1699                         /* set created to 2 to indicate user
1700                          * is the first in the channel
1701                          * and should be given ops */
1702                         created = 2;
1703                 }
1704         }
1705         else
1706         {
1707                 /* channel exists, just fish out a pointer to its struct */
1708                 Ptr = FindChan(cname);
1709                 if (Ptr)
1710                 {
1711                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
1712
1713                         // the override flag allows us to bypass channel modes
1714                         // and bans (used by servers)
1715                         if ((!override) || (!strcasecmp(user->server,ServerName)))
1716                         {
1717                                 log(DEBUG,"Not overriding...");
1718                                 MOD_RESULT = 0;
1719                                 FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
1720                                 if (MOD_RESULT == 1) {
1721                                         return NULL;
1722                                 }
1723                                 log(DEBUG,"MOD_RESULT=%d",MOD_RESULT);
1724
1725                                 if (!MOD_RESULT)
1726                                 {
1727                                         log(DEBUG,"add_channel: checking key, invite, etc");
1728                                         MOD_RESULT = 0;
1729                                         FOREACH_RESULT(OnCheckKey(user, Ptr, key ? key : ""));
1730                                         if (MOD_RESULT == 0)
1731                                         {
1732                                                 if (Ptr->key[0])
1733                                                 {
1734                                                         log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
1735                                                         if (!key)
1736                                                         {
1737                                                                 log(DEBUG,"add_channel: no key given in JOIN");
1738                                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
1739                                                                 return NULL;
1740                                                         }
1741                                                         else
1742                                                         {
1743                                                                 if (strcasecmp(key,Ptr->key))
1744                                                                 {
1745                                                                         log(DEBUG,"add_channel: bad key given in JOIN");
1746                                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
1747                                                                         return NULL;
1748                                                                 }
1749                                                         }
1750                                                 }
1751                                                 log(DEBUG,"add_channel: no key");
1752                                         }
1753                                         MOD_RESULT = 0;
1754                                         FOREACH_RESULT(OnCheckInvite(user, Ptr));
1755                                         if (MOD_RESULT == 0)
1756                                         {
1757                                                 if (Ptr->binarymodes & CM_INVITEONLY)
1758                                                 {
1759                                                         log(DEBUG,"add_channel: channel is +i");
1760                                                         if (user->IsInvited(Ptr->name))
1761                                                         {
1762                                                                 /* user was invited to channel */
1763                                                                 /* there may be an optional channel NOTICE here */
1764                                                         }
1765                                                         else
1766                                                         {
1767                                                                 WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
1768                                                                 return NULL;
1769                                                         }
1770                                                 }
1771                                                 log(DEBUG,"add_channel: channel is not +i");
1772                                         }
1773                                         MOD_RESULT = 0;
1774                                         FOREACH_RESULT(OnCheckLimit(user, Ptr));
1775                                         if (MOD_RESULT == 0)
1776                                         {
1777                                                 if (Ptr->limit)
1778                                                 {
1779                                                         if (usercount(Ptr) >= Ptr->limit)
1780                                                         {
1781                                                                 WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
1782                                                                 return NULL;
1783                                                         }
1784                                                 }
1785                                         }
1786                                         log(DEBUG,"add_channel: about to walk banlist");
1787                                         MOD_RESULT = 0;
1788                                         FOREACH_RESULT(OnCheckBan(user, Ptr));
1789                                         if (MOD_RESULT == 0)
1790                                         {
1791                                                 /* check user against the channel banlist */
1792                                                 if (Ptr)
1793                                                 {
1794                                                         if (Ptr->bans.size())
1795                                                         {
1796                                                                 for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1797                                                                 {
1798                                                                         if (match(user->GetFullHost(),i->data))
1799                                                                         {
1800                                                                                 WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
1801                                                                                 return NULL;
1802                                                                         }
1803                                                                 }
1804                                                         }
1805                                                 }
1806                                                 log(DEBUG,"add_channel: bans checked");
1807                                         }
1808
1809                                 }
1810
1811
1812                                 if ((Ptr) && (user))
1813                                 {
1814                                         user->RemoveInvite(Ptr->name);
1815                                 }
1816
1817                                 log(DEBUG,"add_channel: invites removed");
1818
1819                         }
1820                         else
1821                         {
1822                                 log(DEBUG,"Overridden checks");
1823                         }
1824
1825
1826                 }
1827                 created = 1;
1828         }
1829
1830         log(DEBUG,"Passed channel checks");
1831
1832         for (int index =0; index != MAXCHANS; index++)
1833         {
1834                 log(DEBUG,"Check location %d",index);
1835                 if (user->chans[index].channel == NULL)
1836                 {
1837                         log(DEBUG,"Adding into their channel list at location %d",index);
1838
1839                         if (created == 2)
1840                         {
1841                                 /* first user in is given ops */
1842                                 user->chans[index].uc_modes = UCMODE_OP;
1843                         }
1844                         else
1845                         {
1846                                 user->chans[index].uc_modes = 0;
1847                         }
1848                         user->chans[index].channel = Ptr;
1849                         Ptr->AddUser((char*)user);
1850                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
1851
1852                         if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it.
1853                         {
1854                                 // use the stamdard J token with no privilages.
1855                                 char buffer[MAXBUF];
1856                                 if (created == 2)
1857                                 {
1858                                         snprintf(buffer,MAXBUF,"J %s @%s",user->nick,Ptr->name);
1859                                 }
1860                                 else
1861                                 {
1862                                         snprintf(buffer,MAXBUF,"J %s %s",user->nick,Ptr->name);
1863                                 }
1864                                 NetSendToAll(buffer);
1865                         }
1866
1867                         log(DEBUG,"Sent JOIN to client");
1868
1869                         if (Ptr->topicset)
1870                         {
1871                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
1872                                 WriteServ(user->fd,"333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
1873                         }
1874                         userlist(user,Ptr);
1875                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
1876                         //WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
1877                         //WriteServ(user->fd,"329 %s %s %lu", user->nick, Ptr->name, (unsigned long)Ptr->created);
1878                         FOREACH_MOD OnUserJoin(user,Ptr);
1879                         return Ptr;
1880                 }
1881         }
1882         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
1883         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
1884         return NULL;
1885 }
1886
1887 /* remove a channel from a users record, and remove the record from memory
1888  * if the channel has become empty */
1889
1890 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
1891 {
1892         if ((!user) || (!cname))
1893         {
1894                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
1895                 return NULL;
1896         }
1897
1898         chanrec* Ptr;
1899
1900         if ((!cname) || (!user))
1901         {
1902                 return NULL;
1903         }
1904
1905         Ptr = FindChan(cname);
1906
1907         if (!Ptr)
1908         {
1909                 return NULL;
1910         }
1911
1912         FOREACH_MOD OnUserPart(user,Ptr);
1913         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
1914
1915         for (int i =0; i != MAXCHANS; i++)
1916         {
1917                 /* zap it from the channel list of the user */
1918                 if (user->chans[i].channel == Ptr)
1919                 {
1920                         if (reason)
1921                         {
1922                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
1923
1924                                 if (!local)
1925                                 {
1926                                         char buffer[MAXBUF];
1927                                         snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason);
1928                                         NetSendToAll(buffer);
1929                                 }
1930
1931
1932                         }
1933                         else
1934                         {
1935                                 if (!local)
1936                                 {
1937                                         char buffer[MAXBUF];
1938                                         snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name);
1939                                         NetSendToAll(buffer);
1940                                 }
1941
1942                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
1943                         }
1944                         user->chans[i].uc_modes = 0;
1945                         user->chans[i].channel = NULL;
1946                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1947                         break;
1948                 }
1949         }
1950
1951         Ptr->DelUser((char*)user);
1952
1953         /* if there are no users left on the channel */
1954         if (!usercount(Ptr))
1955         {
1956                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1957
1958                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1959
1960                 /* kill the record */
1961                 if (iter != chanlist.end())
1962                 {
1963                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1964                         delete Ptr;
1965                         chanlist.erase(iter);
1966                 }
1967         }
1968 }
1969
1970
1971 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
1972 {
1973         if ((!src) || (!user) || (!Ptr) || (!reason))
1974         {
1975                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
1976                 return;
1977         }
1978
1979         if ((!Ptr) || (!user) || (!src))
1980         {
1981                 return;
1982         }
1983
1984         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
1985
1986         if (!has_channel(user,Ptr))
1987         {
1988                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
1989                 return;
1990         }
1991
1992         int MOD_RESULT = 0;
1993         FOREACH_RESULT(OnAccessCheck(src,user,Ptr,AC_KICK));
1994         if (MOD_RESULT == ACR_DENY)
1995                 return;
1996
1997         if (MOD_RESULT == ACR_DEFAULT)
1998         {
1999                 if (((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) && (!is_uline(src->server)))
2000                 {
2001                         if (cstatus(src,Ptr) == STATUS_HOP)
2002                         {
2003                                 WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
2004                         }
2005                         else
2006                         {
2007                                 WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
2008                         }
2009
2010                         return;
2011                 }
2012         }
2013
2014         MOD_RESULT = 0;
2015         FOREACH_RESULT(OnUserPreKick(src,user,Ptr,reason));
2016         if (MOD_RESULT)
2017                 return;
2018
2019         FOREACH_MOD OnUserKick(src,user,Ptr,reason);
2020
2021         for (int i =0; i != MAXCHANS; i++)
2022         {
2023                 /* zap it from the channel list of the user */
2024                 if (user->chans[i].channel)
2025                 if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
2026                 {
2027                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
2028                         user->chans[i].uc_modes = 0;
2029                         user->chans[i].channel = NULL;
2030                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
2031                         break;
2032                 }
2033         }
2034
2035         Ptr->DelUser((char*)user);
2036
2037         /* if there are no users left on the channel */
2038         if (!usercount(Ptr))
2039         {
2040                 chan_hash::iterator iter = chanlist.find(Ptr->name);
2041
2042                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
2043
2044                 /* kill the record */
2045                 if (iter != chanlist.end())
2046                 {
2047                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
2048                         delete Ptr;
2049                         chanlist.erase(iter);
2050                 }
2051         }
2052 }
2053
2054
2055
2056
2057 /* This function pokes and hacks at a parameter list like the following:
2058  *
2059  * PART #winbot,#darkgalaxy :m00!
2060  *
2061  * to turn it into a series of individual calls like this:
2062  *
2063  * PART #winbot :m00!
2064  * PART #darkgalaxy :m00!
2065  *
2066  * The seperate calls are sent to a callback function provided by the caller
2067  * (the caller will usually call itself recursively). The callback function
2068  * must be a command handler. Calling this function on a line with no list causes
2069  * no action to be taken. You must provide a starting and ending parameter number
2070  * where the range of the list can be found, useful if you have a terminating
2071  * parameter as above which is actually not part of the list, or parameters
2072  * before the actual list as well. This code is used by many functions which
2073  * can function as "one to list" (see the RFC) */
2074
2075 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
2076 {
2077         char plist[MAXBUF];
2078         char *param;
2079         char *pars[32];
2080         char blog[32][MAXBUF];
2081         char blog2[32][MAXBUF];
2082         int j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
2083         char keystr[MAXBUF];
2084         char moo[MAXBUF];
2085
2086         for (int i = 0; i <32; i++)
2087                 strcpy(blog[i],"");
2088
2089         for (int i = 0; i <32; i++)
2090                 strcpy(blog2[i],"");
2091
2092         strcpy(moo,"");
2093         for (int i = 0; i <10; i++)
2094         {
2095                 if (!parameters[i])
2096                 {
2097                         parameters[i] = moo;
2098                 }
2099         }
2100         if (joins)
2101         {
2102                 if (pcnt > 1) /* we have a key to copy */
2103                 {
2104                         strlcpy(keystr,parameters[1],MAXBUF);
2105                 }
2106         }
2107
2108         if (!parameters[start])
2109         {
2110                 return 0;
2111         }
2112         if (!strchr(parameters[start],','))
2113         {
2114                 return 0;
2115         }
2116         strcpy(plist,"");
2117         for (int i = start; i <= end; i++)
2118         {
2119                 if (parameters[i])
2120                 {
2121                         strlcat(plist,parameters[i],MAXBUF);
2122                 }
2123         }
2124
2125         j = 0;
2126         param = plist;
2127
2128         t = strlen(plist);
2129         for (int i = 0; i < t; i++)
2130         {
2131                 if (plist[i] == ',')
2132                 {
2133                         plist[i] = '\0';
2134                         strlcpy(blog[j++],param,MAXBUF);
2135                         param = plist+i+1;
2136                         if (j>20)
2137                         {
2138                                 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
2139                                 return 1;
2140                         }
2141                 }
2142         }
2143         strlcpy(blog[j++],param,MAXBUF);
2144         total = j;
2145
2146         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
2147         {
2148                 strcat(keystr,",");
2149         }
2150
2151         if ((joins) && (keystr))
2152         {
2153                 if (strchr(keystr,','))
2154                 {
2155                         j = 0;
2156                         param = keystr;
2157                         t2 = strlen(keystr);
2158                         for (int i = 0; i < t2; i++)
2159                         {
2160                                 if (keystr[i] == ',')
2161                                 {
2162                                         keystr[i] = '\0';
2163                                         strlcpy(blog2[j++],param,MAXBUF);
2164                                         param = keystr+i+1;
2165                                 }
2166                         }
2167                         strlcpy(blog2[j++],param,MAXBUF);
2168                         total2 = j;
2169                 }
2170         }
2171
2172         for (j = 0; j < total; j++)
2173         {
2174                 if (blog[j])
2175                 {
2176                         pars[0] = blog[j];
2177                 }
2178                 for (q = end; q < pcnt-1; q++)
2179                 {
2180                         if (parameters[q+1])
2181                         {
2182                                 pars[q-end+1] = parameters[q+1];
2183                         }
2184                 }
2185                 if ((joins) && (parameters[1]))
2186                 {
2187                         if (pcnt > 1)
2188                         {
2189                                 pars[1] = blog2[j];
2190                         }
2191                         else
2192                         {
2193                                 pars[1] = NULL;
2194                         }
2195                 }
2196                 /* repeatedly call the function with the hacked parameter list */
2197                 if ((joins) && (pcnt > 1))
2198                 {
2199                         if (pars[1])
2200                         {
2201                                 // pars[1] already set up and containing key from blog2[j]
2202                                 fn(pars,2,u);
2203                         }
2204                         else
2205                         {
2206                                 pars[1] = parameters[1];
2207                                 fn(pars,2,u);
2208                         }
2209                 }
2210                 else
2211                 {
2212                         fn(pars,pcnt-(end-start),u);
2213                 }
2214         }
2215
2216         return 1;
2217 }
2218
2219
2220
2221 void kill_link(userrec *user,const char* r)
2222 {
2223         user_hash::iterator iter = clientlist.find(user->nick);
2224
2225         char reason[MAXBUF];
2226
2227         strncpy(reason,r,MAXBUF);
2228
2229         if (strlen(reason)>MAXQUIT)
2230         {
2231                 reason[MAXQUIT-1] = '\0';
2232         }
2233
2234         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2235         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2236         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
2237
2238         if (user->registered == 7) {
2239                 FOREACH_MOD OnUserQuit(user);
2240                 WriteCommonExcept(user,"QUIT :%s",reason);
2241
2242                 // Q token must go to ALL servers!!!
2243                 char buffer[MAXBUF];
2244                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2245                 NetSendToAll(buffer);
2246         }
2247
2248         FOREACH_MOD OnUserDisconnect(user);
2249
2250         if (user->fd > -1)
2251         {
2252                 FOREACH_MOD OnRawSocketClose(user->fd);
2253 #ifdef USE_KQUEUE
2254                 struct kevent ke;
2255                 EV_SET(&ke, user->fd, EVFILT_READ, EV_DELETE, 0, 0, NULL);
2256                 int i = kevent(kq, &ke, 1, 0, 0, NULL);
2257                 if (i == -1)
2258                 {
2259                         log(DEBUG,"kqueue: Failed to remove user from queue!");
2260                 }
2261 #endif
2262                 shutdown(user->fd,2);
2263                 close(user->fd);
2264         }
2265
2266         if (user->registered == 7) {
2267                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
2268                 AddWhoWas(user);
2269         }
2270
2271         if (user->registered == 7) {
2272                 purge_empty_chans(user);
2273         }
2274
2275         if (iter != clientlist.end())
2276         {
2277                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
2278                 if (user->fd > -1)
2279                         fd_ref_table[user->fd] = NULL;
2280                 clientlist.erase(iter);
2281         }
2282         delete user;
2283 }
2284
2285 void kill_link_silent(userrec *user,const char* r)
2286 {
2287         user_hash::iterator iter = clientlist.find(user->nick);
2288
2289         char reason[MAXBUF];
2290
2291         strncpy(reason,r,MAXBUF);
2292
2293         if (strlen(reason)>MAXQUIT)
2294         {
2295                 reason[MAXQUIT-1] = '\0';
2296         }
2297
2298         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2299         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2300         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
2301
2302         if (user->registered == 7) {
2303                 FOREACH_MOD OnUserQuit(user);
2304                 WriteCommonExcept(user,"QUIT :%s",reason);
2305
2306                 // Q token must go to ALL servers!!!
2307                 char buffer[MAXBUF];
2308                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2309                 NetSendToAll(buffer);
2310         }
2311
2312         FOREACH_MOD OnUserDisconnect(user);
2313
2314         if (user->fd > -1)
2315         {
2316                 FOREACH_MOD OnRawSocketClose(user->fd);
2317 #ifdef USE_KQUEUE
2318                 struct kevent ke;
2319                 EV_SET(&ke, user->fd, EVFILT_READ, EV_DELETE, 0, 0, NULL);
2320                 int i = kevent(kq, &ke, 1, 0, 0, NULL);
2321                 if (i == -1)
2322                 {
2323                         log(DEBUG,"kqueue: Failed to remove user from queue!");
2324                 }
2325 #endif
2326                 shutdown(user->fd,2);
2327                 close(user->fd);
2328         }
2329
2330         if (user->registered == 7) {
2331                 purge_empty_chans(user);
2332         }
2333
2334         if (iter != clientlist.end())
2335         {
2336                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
2337                 if (user->fd > -1)
2338                         fd_ref_table[user->fd] = NULL;
2339                 clientlist.erase(iter);
2340         }
2341         delete user;
2342 }
2343
2344
2345
2346 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
2347
2348 char* Passwd(userrec *user)
2349 {
2350         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2351         {
2352                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
2353                 {
2354                         return i->pass;
2355                 }
2356         }
2357         return "";
2358 }
2359
2360 bool IsDenied(userrec *user)
2361 {
2362         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2363         {
2364                 if (match(user->host,i->host) && (i->type == CC_DENY))
2365                 {
2366                         return true;
2367                 }
2368         }
2369         return false;
2370 }
2371
2372
2373
2374
2375 /* sends out an error notice to all connected clients (not to be used
2376  * lightly!) */
2377
2378 void send_error(char *s)
2379 {
2380         log(DEBUG,"send_error: %s",s);
2381         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2382         {
2383                 if (isnick(i->second->nick))
2384                 {
2385                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
2386                 }
2387                 else
2388                 {
2389                         // fix - unregistered connections receive ERROR, not NOTICE
2390                         Write(i->second->fd,"ERROR :%s",s);
2391                 }
2392         }
2393 }
2394
2395 void Error(int status)
2396 {
2397         signal (SIGALRM, SIG_IGN);
2398         signal (SIGPIPE, SIG_IGN);
2399         signal (SIGTERM, SIG_IGN);
2400         signal (SIGABRT, SIG_IGN);
2401         signal (SIGSEGV, SIG_IGN);
2402         signal (SIGURG, SIG_IGN);
2403         signal (SIGKILL, SIG_IGN);
2404         log(DEFAULT,"*** fell down a pothole in the road to perfection ***");
2405         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
2406         Exit(status);
2407 }
2408
2409
2410 int main(int argc, char** argv)
2411 {
2412         Start();
2413         srand(time(NULL));
2414         log(DEBUG,"*** InspIRCd starting up!");
2415         if (!FileExists(CONFIG_FILE))
2416         {
2417                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
2418                 log(DEFAULT,"main: no config");
2419                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
2420                 Exit(ERROR);
2421         }
2422         if (argc > 1) {
2423                 for (int i = 1; i < argc; i++)
2424                 {
2425                         if (!strcmp(argv[i],"-nofork")) {
2426                                 nofork = true;
2427                         }
2428                         if (!strcmp(argv[i],"-wait")) {
2429                                 sleep(6);
2430                         }
2431                         if (!strcmp(argv[i],"-nolimit")) {
2432                                 unlimitcore = true;
2433                         }
2434                 }
2435         }
2436         strlcpy(MyExecutable,argv[0],MAXBUF);
2437
2438         // initialize the lowercase mapping table
2439         for (int cn = 0; cn < 256; cn++)
2440                 lowermap[cn] = cn;
2441         // lowercase the uppercase chars
2442         for (int cn = 65; cn < 91; cn++)
2443                 lowermap[cn] = tolower(cn);
2444         // now replace the specific chars for scandanavian comparison
2445         lowermap['['] = '{';
2446         lowermap[']'] = '}';
2447         lowermap['\\'] = '|';
2448
2449         if (InspIRCd(argv,argc) == ERROR)
2450         {
2451                 log(DEFAULT,"main: daemon function bailed");
2452                 printf("ERROR: could not initialise. Shutting down.\n");
2453                 Exit(ERROR);
2454         }
2455         Exit(TRUE);
2456         return 0;
2457 }
2458
2459 template<typename T> inline string ConvToStr(const T &in)
2460 {
2461         stringstream tmp;
2462         if (!(tmp << in)) return string();
2463         return tmp.str();
2464 }
2465
2466 /* re-allocates a nick in the user_hash after they change nicknames,
2467  * returns a pointer to the new user as it may have moved */
2468
2469 userrec* ReHashNick(char* Old, char* New)
2470 {
2471         //user_hash::iterator newnick;
2472         user_hash::iterator oldnick = clientlist.find(Old);
2473
2474         log(DEBUG,"ReHashNick: %s %s",Old,New);
2475
2476         if (!strcasecmp(Old,New))
2477         {
2478                 log(DEBUG,"old nick is new nick, skipping");
2479                 return oldnick->second;
2480         }
2481
2482         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
2483
2484         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
2485
2486         userrec* olduser = oldnick->second;
2487         clientlist[New] = olduser;
2488         clientlist.erase(oldnick);
2489
2490         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
2491
2492         return clientlist[New];
2493 }
2494
2495 /* adds or updates an entry in the whowas list */
2496 void AddWhoWas(userrec* u)
2497 {
2498         whowas_hash::iterator iter = whowas.find(u->nick);
2499         WhoWasUser *a = new WhoWasUser();
2500         strlcpy(a->nick,u->nick,NICKMAX);
2501         strlcpy(a->ident,u->ident,15);
2502         strlcpy(a->dhost,u->dhost,160);
2503         strlcpy(a->host,u->host,160);
2504         strlcpy(a->fullname,u->fullname,128);
2505         strlcpy(a->server,u->server,256);
2506         a->signon = u->signon;
2507
2508         /* MAX_WHOWAS:   max number of /WHOWAS items
2509          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
2510          *               can be replaced by a newer one
2511          */
2512
2513         if (iter == whowas.end())
2514         {
2515                 if (whowas.size() >= WHOWAS_MAX)
2516                 {
2517                         for (whowas_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
2518                         {
2519                                 // 3600 seconds in an hour ;)
2520                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
2521                                 {
2522                                         // delete the old one
2523                                         if (i->second) delete i->second;
2524                                         // replace with new one
2525                                         i->second = a;
2526                                         log(DEBUG,"added WHOWAS entry, purged an old record");
2527                                         return;
2528                                 }
2529                         }
2530                         // no space left and user doesnt exist. Don't leave ram in use!
2531                         log(DEBUG,"Not able to update whowas (list at WHOWAS_MAX entries and trying to add new?), freeing excess ram");
2532                         delete a;
2533                 }
2534                 else
2535                 {
2536                         log(DEBUG,"added fresh WHOWAS entry");
2537                         whowas[a->nick] = a;
2538                 }
2539         }
2540         else
2541         {
2542                 log(DEBUG,"updated WHOWAS entry");
2543                 if (iter->second) delete iter->second;
2544                 iter->second = a;
2545         }
2546 }
2547
2548
2549 /* add a client connection to the sockets list */
2550 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
2551 {
2552         string tempnick;
2553         char tn2[MAXBUF];
2554         user_hash::iterator iter;
2555
2556         tempnick = ConvToStr(socket) + "-unknown";
2557         sprintf(tn2,"%lu-unknown",(unsigned long)socket);
2558
2559         iter = clientlist.find(tempnick);
2560
2561         // fix by brain.
2562         // as these nicknames are 'RFC impossible', we can be sure nobody is going to be
2563         // using one as a registered connection. As theyre per fd, we can also safely assume
2564         // that we wont have collisions. Therefore, if the nick exists in the list, its only
2565         // used by a dead socket, erase the iterator so that the new client may reclaim it.
2566         // this was probably the cause of 'server ignores me when i hammer it with reconnects'
2567         // issue in earlier alphas/betas
2568         if (iter != clientlist.end())
2569         {
2570                 userrec* goner = iter->second;
2571                 delete goner;
2572                 clientlist.erase(iter);
2573         }
2574
2575         /*
2576          * It is OK to access the value here this way since we know
2577          * it exists, we just created it above.
2578          *
2579          * At NO other time should you access a value in a map or a
2580          * hash_map this way.
2581          */
2582         clientlist[tempnick] = new userrec();
2583
2584         NonBlocking(socket);
2585         log(DEBUG,"AddClient: %lu %s %d %s",(unsigned long)socket,host,port,ip);
2586
2587         clientlist[tempnick]->fd = socket;
2588         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
2589         strncpy(clientlist[tempnick]->host, host,160);
2590         strncpy(clientlist[tempnick]->dhost, host,160);
2591         strncpy(clientlist[tempnick]->server, ServerName,256);
2592         strncpy(clientlist[tempnick]->ident, "unknown",15);
2593         clientlist[tempnick]->registered = 0;
2594         clientlist[tempnick]->signon = TIME+dns_timeout;
2595         clientlist[tempnick]->lastping = 1;
2596         clientlist[tempnick]->port = port;
2597         strncpy(clientlist[tempnick]->ip,ip,16);
2598
2599         // set the registration timeout for this user
2600         unsigned long class_regtimeout = 90;
2601         int class_flood = 0;
2602         long class_threshold = 5;
2603         long class_sqmax = 262144;      // 256kb
2604         long class_rqmax = 4096;        // 4k
2605
2606         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2607         {
2608                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2609                 {
2610                         class_regtimeout = (unsigned long)i->registration_timeout;
2611                         class_flood = i->flood;
2612                         clientlist[tempnick]->pingmax = i->pingtime;
2613                         class_threshold = i->threshold;
2614                         class_sqmax = i->sendqmax;
2615                         class_rqmax = i->recvqmax;
2616                         break;
2617                 }
2618         }
2619
2620         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax+dns_timeout;
2621         clientlist[tempnick]->timeout = TIME+class_regtimeout;
2622         clientlist[tempnick]->flood = class_flood;
2623         clientlist[tempnick]->threshold = class_threshold;
2624         clientlist[tempnick]->sendqmax = class_sqmax;
2625         clientlist[tempnick]->recvqmax = class_rqmax;
2626
2627         for (int i = 0; i < MAXCHANS; i++)
2628         {
2629                 clientlist[tempnick]->chans[i].channel = NULL;
2630                 clientlist[tempnick]->chans[i].uc_modes = 0;
2631         }
2632
2633         if (clientlist.size() == MAXCLIENTS)
2634         {
2635                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
2636                 return;
2637         }
2638
2639         // this is done as a safety check to keep the file descriptors within range of fd_ref_table.
2640         // its a pretty big but for the moment valid assumption:
2641         // file descriptors are handed out starting at 0, and are recycled as theyre freed.
2642         // therefore if there is ever an fd over 65535, 65536 clients must be connected to the
2643         // irc server at once (or the irc server otherwise initiating this many connections, files etc)
2644         // which for the time being is a physical impossibility (even the largest networks dont have more
2645         // than about 10,000 users on ONE server!)
2646         if (socket > 65534)
2647         {
2648                 kill_link(clientlist[tempnick],"Server is full");
2649                 return;
2650         }
2651
2652
2653         char* e = matches_exception(ip);
2654         if (!e)
2655         {
2656                 char* r = matches_zline(ip);
2657                 if (r)
2658                 {
2659                         char reason[MAXBUF];
2660                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
2661                         kill_link(clientlist[tempnick],reason);
2662                         return;
2663                 }
2664         }
2665         fd_ref_table[socket] = clientlist[tempnick];
2666
2667 #ifdef USE_KQUEUE
2668         struct kevent ke;
2669         log(DEBUG,"kqueue: Add user to events, kq=%d socket=%d",kq,socket);
2670         EV_SET(&ke, socket, EVFILT_READ, EV_ADD, 0, 0, NULL);
2671         int i = kevent(kq, &ke, 1, 0, 0, NULL);
2672         if (i == -1)
2673         {
2674                 switch (errno)
2675                 {
2676                         case EACCES:
2677                                 log(DEBUG,"kqueue: EACCES");
2678                         break;
2679                         case EFAULT:
2680                                 log(DEBUG,"kqueue: EFAULT");
2681                         break;
2682                         case EBADF:
2683                                 log(DEBUG,"kqueue: EBADF=%d",ke.ident);
2684                         break;
2685                         case EINTR:
2686                                 log(DEBUG,"kqueue: EINTR");
2687                         break;
2688                         case EINVAL:
2689                                 log(DEBUG,"kqueue: EINVAL");
2690                         break;
2691                         case ENOENT:
2692                                 log(DEBUG,"kqueue: ENOENT");
2693                         break;
2694                         case ENOMEM:
2695                                 log(DEBUG,"kqueue: ENOMEM");
2696                         break;
2697                         case ESRCH:
2698                                 log(DEBUG,"kqueue: ESRCH");
2699                         break;
2700                         default:
2701                                 log(DEBUG,"kqueue: UNKNOWN!");
2702                         break;
2703                 }
2704                 log(DEBUG,"kqueue: Failed to add user to queue!");
2705         }
2706
2707 #endif
2708 }
2709
2710 // this function counts all users connected, wether they are registered or NOT.
2711 int usercnt(void)
2712 {
2713         return clientlist.size();
2714 }
2715
2716 // this counts only registered users, so that the percentages in /MAP don't mess up when users are sitting in an unregistered state
2717 int registered_usercount(void)
2718 {
2719         int c = 0;
2720         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2721         {
2722                 if ((i->second->fd) && (isnick(i->second->nick))) c++;
2723         }
2724         return c;
2725 }
2726
2727 int usercount_invisible(void)
2728 {
2729         int c = 0;
2730
2731         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2732         {
2733                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
2734         }
2735         return c;
2736 }
2737
2738 int usercount_opers(void)
2739 {
2740         int c = 0;
2741
2742         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2743         {
2744                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
2745         }
2746         return c;
2747 }
2748
2749 int usercount_unknown(void)
2750 {
2751         int c = 0;
2752
2753         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2754         {
2755                 if ((i->second->fd) && (i->second->registered != 7))
2756                         c++;
2757         }
2758         return c;
2759 }
2760
2761 long chancount(void)
2762 {
2763         return chanlist.size();
2764 }
2765
2766 long count_servs(void)
2767 {
2768         int c = 0;
2769         for (int i = 0; i < 32; i++)
2770         {
2771                 if (me[i] != NULL)
2772                 {
2773                         for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2774                         {
2775                                 if (strcasecmp(j->GetServerName().c_str(),ServerName))
2776                                 {
2777                                         c++;
2778                                 }
2779                         }
2780                 }
2781         }
2782         return c;
2783 }
2784
2785 long servercount(void)
2786 {
2787         return count_servs()+1;
2788 }
2789
2790 long local_count()
2791 {
2792         int c = 0;
2793         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2794         {
2795                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
2796         }
2797         return c;
2798 }
2799
2800
2801 void ShowMOTD(userrec *user)
2802 {
2803         char buf[65536];
2804         std::string WholeMOTD = "";
2805         if (!MOTD.size())
2806         {
2807                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
2808                 return;
2809         }
2810         snprintf(buf,65535,":%s 375 %s :- %s message of the day\r\n", ServerName, user->nick, ServerName);
2811         WholeMOTD = WholeMOTD + buf;
2812         for (int i = 0; i != MOTD.size(); i++)
2813         {
2814                 snprintf(buf,65535,":%s 372 %s :- %s\r\n", ServerName, user->nick, MOTD[i].c_str());
2815                 WholeMOTD = WholeMOTD + buf;
2816         }
2817         snprintf(buf,65535,":%s 376 %s :End of message of the day.\r\n", ServerName, user->nick);
2818         WholeMOTD = WholeMOTD + buf;
2819         // only one write operation
2820         user->AddWriteBuf(WholeMOTD);
2821         statsSent += WholeMOTD.length();
2822 }
2823
2824 void ShowRULES(userrec *user)
2825 {
2826         if (!RULES.size())
2827         {
2828                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
2829                 return;
2830         }
2831         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
2832         for (int i = 0; i != RULES.size(); i++)
2833         {
2834                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
2835         }
2836         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
2837 }
2838
2839 /* shows the message of the day, and any other on-logon stuff */
2840 void FullConnectUser(userrec* user)
2841 {
2842         statsConnects++;
2843         user->idle_lastmsg = TIME;
2844         log(DEBUG,"ConnectUser: %s",user->nick);
2845
2846         if ((strcmp(Passwd(user),"")) && (!user->haspassed))
2847         {
2848                 kill_link(user,"Invalid password");
2849                 return;
2850         }
2851         if (IsDenied(user))
2852         {
2853                 kill_link(user,"Unauthorised connection");
2854                 return;
2855         }
2856
2857         char match_against[MAXBUF];
2858         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
2859         char* e = matches_exception(match_against);
2860         if (!e)
2861         {
2862                 char* r = matches_gline(match_against);
2863                 if (r)
2864                 {
2865                         char reason[MAXBUF];
2866                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
2867                         kill_link_silent(user,reason);
2868                         return;
2869                 }
2870                 r = matches_kline(user->host);
2871                 if (r)
2872                 {
2873                         char reason[MAXBUF];
2874                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
2875                         kill_link_silent(user,reason);
2876                         return;
2877                 }
2878         }
2879
2880         // fix by brain: move this below the xline checks to prevent spurious quits going onto the net that dont belong
2881         user->registered = 7;
2882
2883         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
2884         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
2885         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
2886         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
2887         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
2888         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
2889         std::stringstream v;
2890         v << "MESHED WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
2891         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
2892         v << " TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 CHANMODES=ohvb,k,l,psmnti NETWORK=";
2893         v << Network;
2894         std::string data005 = v.str();
2895         FOREACH_MOD On005Numeric(data005);
2896         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
2897         // so i'd better split it :)
2898         std::stringstream out(data005);
2899         std::string token = "";
2900         std::string line5 = "";
2901         int token_counter = 0;
2902         while (!out.eof())
2903         {
2904                 out >> token;
2905                 line5 = line5 + token + " ";
2906                 token_counter++;
2907                 if ((token_counter >= 13) || (out.eof() == true))
2908                 {
2909                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
2910                         line5 = "";
2911                         token_counter = 0;
2912                 }
2913         }
2914         ShowMOTD(user);
2915
2916         char buffer[MAXBUF];
2917         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);
2918         NetSendToAll(buffer);
2919
2920         // fix by brain: these should be AFTER the N token, so other servers know what the HELL we're on about... :)
2921         FOREACH_MOD OnUserConnect(user);
2922         WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,user->ip);
2923 }
2924
2925
2926 // this returns 1 when all modules are satisfied that the user should be allowed onto the irc server
2927 // (until this returns true, a user will block in the waiting state, waiting to connect up to the
2928 // registration timeout maximum seconds)
2929 bool AllModulesReportReady(userrec* user)
2930 {
2931         for (int i = 0; i <= MODCOUNT; i++)
2932         {
2933                 int res = modules[i]->OnCheckReady(user);
2934                         if (!res)
2935                                 return false;
2936         }
2937         return true;
2938 }
2939
2940 /* shows the message of the day, and any other on-logon stuff */
2941 void ConnectUser(userrec *user)
2942 {
2943         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
2944         if ((user->dns_done) && (user->registered >= 3) && (AllModulesReportReady(user)))
2945         {
2946                 FullConnectUser(user);
2947         }
2948 }
2949
2950 std::string GetVersionString()
2951 {
2952         char Revision[] = "$Revision$";
2953         char versiondata[MAXBUF];
2954         char *s1 = Revision;
2955         char *savept;
2956         char *v2 = strtok_r(s1," ",&savept);
2957         s1 = savept;
2958         v2 = strtok_r(s1," ",&savept);
2959         s1 = savept;
2960 #ifdef USE_KQUEUE
2961         char socketengine[] = "kqueue";
2962 #else
2963         char socketengine[] = "select";
2964 #endif
2965         snprintf(versiondata,MAXBUF,"%s Rev. %s %s :%s (O=%lu) [SE=%s]",VERSION,v2,ServerName,SYSTEM,(unsigned long)OPTIMISATION,socketengine);
2966         return versiondata;
2967 }
2968
2969 void handle_version(char **parameters, int pcnt, userrec *user)
2970 {
2971         if (!pcnt)
2972         {
2973                 WriteServ(user->fd,"351 %s :%s",user->nick,GetVersionString().c_str());
2974         }
2975         else
2976         {
2977                 if (!strcmp(parameters[0],"*"))
2978                 {
2979                         for (int j = 0; j < 32; j++)
2980                         {
2981                                 if (me[j] != NULL)
2982                                 {
2983                                         for (int x = 0; x < me[j]->connectors.size(); x++)
2984                                         {
2985                                                 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());
2986                                         }
2987                                 }
2988                         }
2989                         return;
2990                 }
2991                 if (match(ServerName,parameters[0]))
2992                 {
2993                         WriteServ(user->fd,"351 %s :%s",user->nick,GetVersionString().c_str());
2994                         return;
2995                 }
2996                 bool displayed = false, found = false;
2997                 for (int j = 0; j < 32; j++)
2998                 {
2999                         if (me[j] != NULL)
3000                         {
3001                                 for (int x = 0; x < me[j]->connectors.size(); x++)
3002                                 {
3003                                         if (match(me[j]->connectors[x].GetServerName().c_str(),parameters[0]))
3004                                         {
3005                                                 found = true;
3006                                                 if ((me[j]->connectors[x].GetVersionString() != "") && (!displayed))
3007                                                 {
3008                                                         displayed = true;
3009                                                         WriteServ(user->fd,"351 %s :%s",user->nick,me[j]->connectors[x].GetVersionString().c_str());
3010                                                 }
3011                                         }
3012                                 }
3013                         }
3014                 }
3015                 if ((!displayed) && (found))
3016                 {
3017                         WriteServ(user->fd,"402 %s %s :Server %s has no version information",user->nick,parameters[0],parameters[0]);
3018                         return;
3019                 }
3020                 if (!found)
3021                 {
3022                         WriteServ(user->fd,"402 %s %s :No such server",user->nick,parameters[0]);
3023                 }
3024         }
3025         return;
3026 }
3027
3028
3029 // calls a handler function for a command
3030
3031 void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
3032 {
3033                 for (int i = 0; i < cmdlist.size(); i++)
3034                 {
3035                         if (!strcasecmp(cmdlist[i].command,commandname))
3036                         {
3037                                 if (cmdlist[i].handler_function)
3038                                 {
3039                                         if (pcnt>=cmdlist[i].min_params)
3040                                         {
3041                                                 if (strchr(user->modes,cmdlist[i].flags_needed))
3042                                                 {
3043                                                         cmdlist[i].handler_function(parameters,pcnt,user);
3044                                                 }
3045                                         }
3046                                 }
3047                         }
3048                 }
3049 }
3050
3051 void DoSplitEveryone()
3052 {
3053         bool go_again = true;
3054         while (go_again)
3055         {
3056                 go_again = false;
3057                 for (int i = 0; i < 32; i++)
3058                 {
3059                         if (me[i] != NULL)
3060                         {
3061                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3062                                 {
3063                                         if (strcasecmp(j->GetServerName().c_str(),ServerName))
3064                                         {
3065                                                 j->routes.clear();
3066                                                 j->CloseConnection();
3067                                                 me[i]->connectors.erase(j);
3068                                                 go_again = true;
3069                                                 break;
3070                                         }
3071                                 }
3072                         }
3073                 }
3074         }
3075         log(DEBUG,"Removed server. Will remove clients...");
3076         // iterate through the userlist and remove all users on this server.
3077         // because we're dealing with a mesh, we dont have to deal with anything
3078         // "down-route" from this server (nice huh)
3079         go_again = true;
3080         char reason[MAXBUF];
3081         while (go_again)
3082         {
3083                 go_again = false;
3084                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3085                 {
3086                         if (strcasecmp(u->second->server,ServerName))
3087                         {
3088                                 snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server);
3089                                 kill_link(u->second,reason);
3090                                 go_again = true;
3091                                 break;
3092                         }
3093                 }
3094         }
3095 }
3096
3097
3098
3099 char islast(const char* s)
3100 {
3101         char c = '`';
3102         for (int j = 0; j < 32; j++)
3103         {
3104                 if (me[j] != NULL)
3105                 {
3106                         for (int k = 0; k < me[j]->connectors.size(); k++)
3107                         {
3108                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
3109                                 {
3110                                         c = '|';
3111                                 }
3112                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
3113                                 {
3114                                         c = '`';
3115                                 }
3116                         }
3117                 }
3118         }
3119         return c;
3120 }
3121
3122 long map_count(const char* s)
3123 {
3124         int c = 0;
3125         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
3126         {
3127                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
3128         }
3129         return c;
3130 }
3131
3132
3133 void force_nickchange(userrec* user,const char* newnick)
3134 {
3135         char nick[MAXBUF];
3136         int MOD_RESULT = 0;
3137
3138         strcpy(nick,"");
3139
3140         FOREACH_RESULT(OnUserPreNick(user,newnick));
3141         if (MOD_RESULT) {
3142                 statsCollisions++;
3143                 kill_link(user,"Nickname collision");
3144                 return;
3145         }
3146         if (matches_qline(newnick))
3147         {
3148                 statsCollisions++;
3149                 kill_link(user,"Nickname collision");
3150                 return;
3151         }
3152
3153         if (user)
3154         {
3155                 if (newnick)
3156                 {
3157                         strncpy(nick,newnick,MAXBUF);
3158                 }
3159                 if (user->registered == 7)
3160                 {
3161                         char* pars[1];
3162                         pars[0] = nick;
3163                         handle_nick(pars,1,user);
3164                 }
3165         }
3166 }
3167
3168
3169 int process_parameters(char **command_p,char *parameters)
3170 {
3171         int j = 0;
3172         int q = strlen(parameters);
3173         if (!q)
3174         {
3175                 /* no parameters, command_p invalid! */
3176                 return 0;
3177         }
3178         if (parameters[0] == ':')
3179         {
3180                 command_p[0] = parameters+1;
3181                 return 1;
3182         }
3183         if (q)
3184         {
3185                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
3186                 {
3187                         /* only one parameter */
3188                         command_p[0] = parameters;
3189                         if (parameters[0] == ':')
3190                         {
3191                                 if (strchr(parameters,' ') != NULL)
3192                                 {
3193                                         command_p[0]++;
3194                                 }
3195                         }
3196                         return 1;
3197                 }
3198         }
3199         command_p[j++] = parameters;
3200         for (int i = 0; i <= q; i++)
3201         {
3202                 if (parameters[i] == ' ')
3203                 {
3204                         command_p[j++] = parameters+i+1;
3205                         parameters[i] = '\0';
3206                         if (command_p[j-1][0] == ':')
3207                         {
3208                                 *command_p[j-1]++; /* remove dodgy ":" */
3209                                 break;
3210                                 /* parameter like this marks end of the sequence */
3211                         }
3212                 }
3213         }
3214         return j; /* returns total number of items in the list */
3215 }
3216
3217 void process_command(userrec *user, char* cmd)
3218 {
3219         char *parameters;
3220         char *command;
3221         char *command_p[127];
3222         char p[MAXBUF], temp[MAXBUF];
3223         int j, items, cmd_found;
3224
3225         for (int i = 0; i < 127; i++)
3226                 command_p[i] = NULL;
3227
3228         if (!user)
3229         {
3230                 return;
3231         }
3232         if (!cmd)
3233         {
3234                 return;
3235         }
3236         if (!cmd[0])
3237         {
3238                 return;
3239         }
3240
3241         int total_params = 0;
3242         if (strlen(cmd)>2)
3243         {
3244                 for (int q = 0; q < strlen(cmd)-1; q++)
3245                 {
3246                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
3247                         {
3248                                 total_params++;
3249                                 // found a 'trailing', we dont count them after this.
3250                                 break;
3251                         }
3252                         if (cmd[q] == ' ')
3253                                 total_params++;
3254                 }
3255         }
3256
3257         // another phidjit bug...
3258         if (total_params > 126)
3259         {
3260                 *(strchr(cmd,' ')) = '\0';
3261                 WriteServ(user->fd,"421 %s %s :Too many parameters given",user->nick,cmd);
3262                 return;
3263         }
3264
3265         strlcpy(temp,cmd,MAXBUF);
3266
3267         std::string tmp = cmd;
3268         for (int i = 0; i <= MODCOUNT; i++)
3269         {
3270                 std::string oldtmp = tmp;
3271                 modules[i]->OnServerRaw(tmp,true,user);
3272                 if (oldtmp != tmp)
3273                 {
3274                         log(DEBUG,"A Module changed the input string!");
3275                         log(DEBUG,"New string: %s",tmp.c_str());
3276                         log(DEBUG,"Old string: %s",oldtmp.c_str());
3277                         break;
3278                 }
3279         }
3280         strlcpy(cmd,tmp.c_str(),MAXBUF);
3281         strlcpy(temp,cmd,MAXBUF);
3282
3283         if (!strchr(cmd,' '))
3284         {
3285                 /* no parameters, lets skip the formalities and not chop up
3286                  * the string */
3287                 log(DEBUG,"About to preprocess command with no params");
3288                 items = 0;
3289                 command_p[0] = NULL;
3290                 parameters = NULL;
3291                 for (int i = 0; i <= strlen(cmd); i++)
3292                 {
3293                         cmd[i] = toupper(cmd[i]);
3294                 }
3295                 command = cmd;
3296         }
3297         else
3298         {
3299                 strcpy(cmd,"");
3300                 j = 0;
3301                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
3302                 for (int i = 0; i < strlen(temp); i++)
3303                 {
3304                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
3305                         {
3306                                 cmd[j++] = temp[i];
3307                                 cmd[j] = 0;
3308                         }
3309                 }
3310                 /* split the full string into a command plus parameters */
3311                 parameters = p;
3312                 strcpy(p," ");
3313                 command = cmd;
3314                 if (strchr(cmd,' '))
3315                 {
3316                         for (int i = 0; i <= strlen(cmd); i++)
3317                         {
3318                                 /* capitalise the command ONLY, leave params intact */
3319                                 cmd[i] = toupper(cmd[i]);
3320                                 /* are we nearly there yet?! :P */
3321                                 if (cmd[i] == ' ')
3322                                 {
3323                                         command = cmd;
3324                                         parameters = cmd+i+1;
3325                                         cmd[i] = '\0';
3326                                         break;
3327                                 }
3328                         }
3329                 }
3330                 else
3331                 {
3332                         for (int i = 0; i <= strlen(cmd); i++)
3333                         {
3334                                 cmd[i] = toupper(cmd[i]);
3335                         }
3336                 }
3337
3338         }
3339         cmd_found = 0;
3340
3341         if (strlen(command)>MAXCOMMAND)
3342         {
3343                 WriteServ(user->fd,"421 %s %s :Command too long",user->nick,command);
3344                 return;
3345         }
3346
3347         for (int x = 0; x < strlen(command); x++)
3348         {
3349                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
3350                 {
3351                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
3352                         {
3353                                 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
3354                                 {
3355                                         statsUnknown++;
3356                                         WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3357                                         return;
3358                                 }
3359                         }
3360                 }
3361         }
3362
3363         for (int i = 0; i != cmdlist.size(); i++)
3364         {
3365                 if (cmdlist[i].command[0])
3366                 {
3367                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
3368                         {
3369                                 if (parameters)
3370                                 {
3371                                         if (parameters[0])
3372                                         {
3373                                                 items = process_parameters(command_p,parameters);
3374                                         }
3375                                         else
3376                                         {
3377                                                 items = 0;
3378                                                 command_p[0] = NULL;
3379                                         }
3380                                 }
3381                                 else
3382                                 {
3383                                         items = 0;
3384                                         command_p[0] = NULL;
3385                                 }
3386
3387                                 if (user)
3388                                 {
3389                                         /* activity resets the ping pending timer */
3390                                         user->nping = TIME + user->pingmax;
3391                                         if ((items) < cmdlist[i].min_params)
3392                                         {
3393                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
3394                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
3395                                                 return;
3396                                         }
3397                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
3398                                         {
3399                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3400                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
3401                                                 cmd_found = 1;
3402                                                 return;
3403                                         }
3404                                         if ((cmdlist[i].flags_needed) && (!user->HasPermission(command)))
3405                                         {
3406                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3407                                                 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
3408                                                 cmd_found = 1;
3409                                                 return;
3410                                         }
3411                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
3412                                          * deny command! */
3413                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
3414                                         {
3415                                                 if ((!isnick(user->nick)) || (user->registered != 7))
3416                                                 {
3417                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
3418                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
3419                                                         return;
3420                                                 }
3421                                         }
3422                                         if ((user->registered == 7) && (!strchr(user->modes,'o')))
3423                                         {
3424                                                 char* mycmd;
3425                                                 char* savept2;
3426                                                 mycmd = strtok_r(DisabledCommands," ",&savept2);
3427                                                 while (mycmd)
3428                                                 {
3429                                                         if (!strcasecmp(mycmd,command))
3430                                                         {
3431                                                                 // command is disabled!
3432                                                                 WriteServ(user->fd,"421 %s %s :This command has been disabled.",user->nick,command);
3433                                                                 return;
3434                                                         }
3435                                                         mycmd = strtok_r(NULL," ",&savept2);
3436                                                 }
3437
3438
3439                                         }
3440                                         if ((user->registered == 7) || (!strncmp(command,"USER",4)) || (!strncmp(command,"NICK",4)) || (!strncmp(command,"PASS",4)))
3441                                         {
3442                                                 if (cmdlist[i].handler_function)
3443                                                 {
3444
3445                                                         /* ikky /stats counters */
3446                                                         if (temp)
3447                                                         {
3448                                                                 cmdlist[i].use_count++;
3449                                                                 cmdlist[i].total_bytes+=strlen(temp);
3450                                                         }
3451
3452                                                         int MOD_RESULT = 0;
3453                                                         FOREACH_RESULT(OnPreCommand(command,command_p,items,user));
3454                                                         if (MOD_RESULT == 1) {
3455                                                                 return;
3456                                                         }
3457
3458                                                         /* WARNING: nothing may come after the
3459                                                          * command handler call, as the handler
3460                                                          * may free the user structure! */
3461
3462                                                         cmdlist[i].handler_function(command_p,items,user);
3463                                                 }
3464                                                 return;
3465                                         }
3466                                         else
3467                                         {
3468                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
3469                                                 return;
3470                                         }
3471                                 }
3472                                 cmd_found = 1;
3473                         }
3474                 }
3475         }
3476         if ((!cmd_found) && (user))
3477         {
3478                 statsUnknown++;
3479                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3480         }
3481 }
3482
3483
3484 void createcommand(char* cmd, handlerfunc f, char flags, int minparams,char* source)
3485 {
3486         command_t comm;
3487         /* create the command and push it onto the table */
3488         strlcpy(comm.command,cmd,MAXBUF);
3489         strlcpy(comm.source,source,MAXBUF);
3490         comm.handler_function = f;
3491         comm.flags_needed = flags;
3492         comm.min_params = minparams;
3493         comm.use_count = 0;
3494         comm.total_bytes = 0;
3495         cmdlist.push_back(comm);
3496         log(DEBUG,"Added command %s (%lu parameters)",cmd,(unsigned long)minparams);
3497 }
3498
3499 bool removecommands(const char* source)
3500 {
3501         bool go_again = true;
3502         while (go_again)
3503         {
3504                 go_again = false;
3505                 for (std::deque<command_t>::iterator i = cmdlist.begin(); i != cmdlist.end(); i++)
3506                 {
3507                         if (!strcmp(i->source,source))
3508                         {
3509                                 log(DEBUG,"removecommands(%s) Removing dependent command: %s",i->source,i->command);
3510                                 cmdlist.erase(i);
3511                                 go_again = true;
3512                                 break;
3513                         }
3514                 }
3515         }
3516         return true;
3517 }
3518
3519 void SetupCommandTable(void)
3520 {
3521         createcommand("USER",handle_user,0,4,"<core>");
3522         createcommand("NICK",handle_nick,0,1,"<core>");
3523         createcommand("QUIT",handle_quit,0,0,"<core>");
3524         createcommand("VERSION",handle_version,0,0,"<core>");
3525         createcommand("PING",handle_ping,0,1,"<core>");
3526         createcommand("PONG",handle_pong,0,1,"<core>");
3527         createcommand("ADMIN",handle_admin,0,0,"<core>");
3528         createcommand("PRIVMSG",handle_privmsg,0,2,"<core>");
3529         createcommand("INFO",handle_info,0,0,"<core>");
3530         createcommand("TIME",handle_time,0,0,"<core>");
3531         createcommand("WHOIS",handle_whois,0,1,"<core>");
3532         createcommand("WALLOPS",handle_wallops,'o',1,"<core>");
3533         createcommand("NOTICE",handle_notice,0,2,"<core>");
3534         createcommand("JOIN",handle_join,0,1,"<core>");
3535         createcommand("NAMES",handle_names,0,0,"<core>");
3536         createcommand("PART",handle_part,0,1,"<core>");
3537         createcommand("KICK",handle_kick,0,2,"<core>");
3538         createcommand("MODE",handle_mode,0,1,"<core>");
3539         createcommand("TOPIC",handle_topic,0,1,"<core>");
3540         createcommand("WHO",handle_who,0,1,"<core>");
3541         createcommand("MOTD",handle_motd,0,0,"<core>");
3542         createcommand("RULES",handle_rules,0,0,"<core>");
3543         createcommand("OPER",handle_oper,0,2,"<core>");
3544         createcommand("LIST",handle_list,0,0,"<core>");
3545         createcommand("DIE",handle_die,'o',1,"<core>");
3546         createcommand("RESTART",handle_restart,'o',1,"<core>");
3547         createcommand("KILL",handle_kill,'o',2,"<core>");
3548         createcommand("REHASH",handle_rehash,'o',0,"<core>");
3549         createcommand("LUSERS",handle_lusers,0,0,"<core>");
3550         createcommand("STATS",handle_stats,0,1,"<core>");
3551         createcommand("USERHOST",handle_userhost,0,1,"<core>");
3552         createcommand("AWAY",handle_away,0,0,"<core>");
3553         createcommand("ISON",handle_ison,0,0,"<core>");
3554         createcommand("SUMMON",handle_summon,0,0,"<core>");
3555         createcommand("USERS",handle_users,0,0,"<core>");
3556         createcommand("INVITE",handle_invite,0,2,"<core>");
3557         createcommand("PASS",handle_pass,0,1,"<core>");
3558         createcommand("TRACE",handle_trace,'o',0,"<core>");
3559         createcommand("WHOWAS",handle_whowas,0,1,"<core>");
3560         createcommand("CONNECT",handle_connect,'o',1,"<core>");
3561         createcommand("SQUIT",handle_squit,'o',0,"<core>");
3562         createcommand("MODULES",handle_modules,0,0,"<core>");
3563         createcommand("LINKS",handle_links,0,0,"<core>");
3564         createcommand("MAP",handle_map,0,0,"<core>");
3565         createcommand("KLINE",handle_kline,'o',1,"<core>");
3566         createcommand("GLINE",handle_gline,'o',1,"<core>");
3567         createcommand("ZLINE",handle_zline,'o',1,"<core>");
3568         createcommand("QLINE",handle_qline,'o',1,"<core>");
3569         createcommand("ELINE",handle_eline,'o',1,"<core>");
3570         createcommand("LOADMODULE",handle_loadmodule,'o',1,"<core>");
3571         createcommand("UNLOADMODULE",handle_unloadmodule,'o',1,"<core>");
3572         createcommand("SERVER",handle_server,0,0,"<core>");
3573 }
3574
3575 void process_buffer(const char* cmdbuf,userrec *user)
3576 {
3577         if (!user)
3578         {
3579                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3580                 return;
3581         }
3582         char cmd[MAXBUF];
3583         if (!cmdbuf)
3584         {
3585                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3586                 return;
3587         }
3588         if (!cmdbuf[0])
3589         {
3590                 return;
3591         }
3592         while (*cmdbuf == ' ') cmdbuf++; // strip leading spaces
3593
3594         strlcpy(cmd,cmdbuf,MAXBUF);
3595         if (!cmd[0])
3596         {
3597                 return;
3598         }
3599         int sl = strlen(cmd)-1;
3600         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3601         {
3602                 cmd[sl] = '\0';
3603         }
3604         sl = strlen(cmd)-1;
3605         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3606         {
3607                 cmd[sl] = '\0';
3608         }
3609         sl = strlen(cmd)-1;
3610         while (cmd[sl] == ' ') // strip trailing spaces
3611         {
3612                 cmd[sl] = '\0';
3613                 sl = strlen(cmd)-1;
3614         }
3615
3616         if (!cmd[0])
3617         {
3618                 return;
3619         }
3620         log(DEBUG,"CMDIN: %s %s",user->nick,cmd);
3621         tidystring(cmd);
3622         if ((user) && (cmd))
3623         {
3624                 process_command(user,cmd);
3625         }
3626 }
3627
3628 void DoSync(serverrec* serv, char* tcp_host)
3629 {
3630         char data[MAXBUF];
3631         log(DEBUG,"Sending sync");
3632         // send start of sync marker: Y <timestamp>
3633         // at this point the ircd receiving it starts broadcasting this netburst to all ircds
3634         // except the ones its receiving it from.
3635         snprintf(data,MAXBUF,"%s Y %lu",CreateSum().c_str(),(unsigned long)TIME);
3636         serv->SendPacket(data,tcp_host);
3637         // send users and channels
3638
3639         NetSendMyRoutingTable();
3640
3641         // send all routing table and uline voodoo. The ordering of these commands is IMPORTANT!
3642         for (int j = 0; j < 32; j++)
3643         {
3644                 if (me[j] != NULL)
3645                 {
3646                         for (int k = 0; k < me[j]->connectors.size(); k++)
3647                         {
3648                                 if (is_uline(me[j]->connectors[k].GetServerName().c_str()))
3649                                 {
3650                                         snprintf(data,MAXBUF,"%s H %s",CreateSum().c_str(),me[j]->connectors[k].GetServerName().c_str());
3651                                         serv->SendPacket(data,tcp_host);
3652                                 }
3653                         }
3654                 }
3655         }
3656
3657         // send our version for the remote side to cache
3658         snprintf(data,MAXBUF,"%s v %s %s",CreateSum().c_str(),ServerName,GetVersionString().c_str());
3659         serv->SendPacket(data,tcp_host);
3660
3661         // sync the users and channels, give the modules a look-in.
3662         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
3663         {
3664                 snprintf(data,MAXBUF,"%s N %lu %s %s %s %s +%s %s %s :%s",CreateSum().c_str(),(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);
3665                 serv->SendPacket(data,tcp_host);
3666                 if (strchr(u->second->modes,'o'))
3667                 {
3668                         snprintf(data,MAXBUF,"%s | %s %s",CreateSum().c_str(),u->second->nick,u->second->oper);
3669                         serv->SendPacket(data,tcp_host);
3670                 }
3671                 for (int i = 0; i <= MODCOUNT; i++)
3672                 {
3673                         string_list l = modules[i]->OnUserSync(u->second);
3674                         for (int j = 0; j < l.size(); j++)
3675                         {
3676                                 snprintf(data,MAXBUF,"%s %s",CreateSum().c_str(),l[j].c_str());
3677                                 serv->SendPacket(data,tcp_host);
3678                         }
3679                 }
3680                 char* chl = chlist(u->second,u->second);
3681                 if (strcmp(chl,""))
3682                 {
3683                         snprintf(data,MAXBUF,"%s J %s %s",CreateSum().c_str(),u->second->nick,chl);
3684                         serv->SendPacket(data,tcp_host);
3685                 }
3686         }
3687         // send channel modes, topics etc...
3688         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
3689         {
3690                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
3691                 serv->SendPacket(data,tcp_host);
3692                 for (int i = 0; i <= MODCOUNT; i++)
3693                 {
3694                         string_list l = modules[i]->OnChannelSync(c->second);
3695                         for (int j = 0; j < l.size(); j++)
3696                         {
3697                                 snprintf(data,MAXBUF,"%s %s",CreateSum().c_str(),l[j].c_str());
3698                                 serv->SendPacket(data,tcp_host);
3699                         }
3700                 }
3701                 if (c->second->topic[0])
3702                 {
3703                         snprintf(data,MAXBUF,"%s T %lu %s %s :%s",CreateSum().c_str(),(unsigned long)c->second->topicset,c->second->setby,c->second->name,c->second->topic);
3704                         serv->SendPacket(data,tcp_host);
3705                 }
3706                 // send current banlist
3707
3708                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
3709                 {
3710                         snprintf(data,MAXBUF,"%s M %s +b %s",CreateSum().c_str(),c->second->name,b->data);
3711                         serv->SendPacket(data,tcp_host);
3712                 }
3713         }
3714         // sync global zlines, glines, etc
3715         sync_xlines(serv,tcp_host);
3716
3717         snprintf(data,MAXBUF,"%s F %lu",CreateSum().c_str(),(unsigned long)TIME);
3718         serv->SendPacket(data,tcp_host);
3719         log(DEBUG,"Sent sync");
3720         // ircd sends its serverlist after the end of sync here
3721 }
3722
3723
3724 void NetSendMyRoutingTable()
3725 {
3726         // send out a line saying what is reachable to us.
3727         // E.g. if A is linked to B C and D, send out:
3728         // $ A B C D
3729         // if its only linked to B and D send out:
3730         // $ A B D
3731         // if it has no links, dont even send out the line at all.
3732         char buffer[MAXBUF];
3733         snprintf(buffer,MAXBUF,"$ %s",ServerName);
3734         bool sendit = false;
3735         for (int i = 0; i < 32; i++)
3736         {
3737                 if (me[i] != NULL)
3738                 {
3739                         for (int j = 0; j < me[i]->connectors.size(); j++)
3740                         {
3741                                 if ((me[i]->connectors[j].GetState() != STATE_DISCONNECTED) || (is_uline(me[i]->connectors[j].GetServerName().c_str())))
3742                                 {
3743                                         strlcat(buffer," ",MAXBUF);
3744                                         strlcat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF);
3745                                         sendit = true;
3746                                 }
3747                         }
3748                 }
3749         }
3750         if (sendit)
3751                 NetSendToAll(buffer);
3752 }
3753
3754
3755 void DoSplit(const char* params)
3756 {
3757         bool go_again = true;
3758         while (go_again)
3759         {
3760                 go_again = false;
3761                 for (int i = 0; i < 32; i++)
3762                 {
3763                         if (me[i] != NULL)
3764                         {
3765                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3766                                 {
3767                                         if (!strcasecmp(j->GetServerName().c_str(),params))
3768                                         {
3769                                                 j->routes.clear();
3770                                                 j->CloseConnection();
3771                                                 me[i]->connectors.erase(j);
3772                                                 go_again = true;
3773                                                 break;
3774                                         }
3775                                 }
3776                         }
3777                 }
3778         }
3779         log(DEBUG,"Removed server. Will remove clients...");
3780         // iterate through the userlist and remove all users on this server.
3781         // because we're dealing with a mesh, we dont have to deal with anything
3782         // "down-route" from this server (nice huh)
3783         go_again = true;
3784         char reason[MAXBUF];
3785         snprintf(reason,MAXBUF,"%s %s",ServerName,params);
3786         while (go_again)
3787         {
3788                 go_again = false;
3789                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3790                 {
3791                         if (!strcasecmp(u->second->server,params))
3792                         {
3793                                 kill_link(u->second,reason);
3794                                 go_again = true;
3795                                 break;
3796                         }
3797                 }
3798         }
3799 }
3800
3801 // removes a server. Will NOT remove its users!
3802
3803 void RemoveServer(const char* name)
3804 {
3805         bool go_again = true;
3806         while (go_again)
3807         {
3808                 go_again = false;
3809                 for (int i = 0; i < 32; i++)
3810                 {
3811                         if (me[i] != NULL)
3812                         {
3813                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3814                                 {
3815                                         if (!strcasecmp(j->GetServerName().c_str(),name))
3816                                         {
3817                                                 j->routes.clear();
3818                                                 j->CloseConnection();
3819                                                 me[i]->connectors.erase(j);
3820                                                 go_again = true;
3821                                                 break;
3822                                         }
3823                                 }
3824                         }
3825                 }
3826         }
3827 }
3828
3829
3830 char MODERR[MAXBUF];
3831
3832 char* ModuleError()
3833 {
3834         return MODERR;
3835 }
3836
3837 void erase_factory(int j)
3838 {
3839         int v = 0;
3840         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
3841         {
3842                 if (v == j)
3843                 {
3844                         factory.erase(t);
3845                         factory.push_back(NULL);
3846                         return;
3847                 }
3848                 v++;
3849         }
3850 }
3851
3852 void erase_module(int j)
3853 {
3854         int v1 = 0;
3855         for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
3856         {
3857                 if (v1 == j)
3858                 {
3859                         delete *m;
3860                         modules.erase(m);
3861                         modules.push_back(NULL);
3862                         break;
3863                 }
3864                 v1++;
3865         }
3866         int v2 = 0;
3867         for (std::vector<std::string>::iterator v = module_names.begin(); v != module_names.end(); v++)
3868         {
3869                 if (v2 == j)
3870                 {
3871                        module_names.erase(v);
3872                        break;
3873                 }
3874                 v2++;
3875         }
3876
3877 }
3878
3879 bool UnloadModule(const char* filename)
3880 {
3881         std::string filename_str = filename;
3882         for (int j = 0; j != module_names.size(); j++)
3883         {
3884                 if (module_names[j] == filename_str)
3885                 {
3886                         if (modules[j]->GetVersion().Flags & VF_STATIC)
3887                         {
3888                                 log(DEFAULT,"Failed to unload STATIC module %s",filename);
3889                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
3890                                 return false;
3891                         }
3892                         // found the module
3893                         log(DEBUG,"Deleting module...");
3894                         erase_module(j);
3895                         log(DEBUG,"Erasing module entry...");
3896                         erase_factory(j);
3897                         log(DEBUG,"Removing dependent commands...");
3898                         removecommands(filename);
3899                         log(DEFAULT,"Module %s unloaded",filename);
3900                         MODCOUNT--;
3901                         return true;
3902                 }
3903         }
3904         log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
3905         snprintf(MODERR,MAXBUF,"Module not loaded");
3906         return false;
3907 }
3908
3909 bool DirValid(char* dirandfile)
3910 {
3911         char work[MAXBUF];
3912         strlcpy(work,dirandfile,MAXBUF);
3913         int p = strlen(work);
3914         // we just want the dir
3915         while (strlen(work))
3916         {
3917                 if (work[p] == '/')
3918                 {
3919                         work[p] = '\0';
3920                         break;
3921                 }
3922                 work[p--] = '\0';
3923         }
3924         char buffer[MAXBUF], otherdir[MAXBUF];
3925         // Get the current working directory
3926         if( getcwd( buffer, MAXBUF ) == NULL )
3927                 return false;
3928         chdir(work);
3929         if( getcwd( otherdir, MAXBUF ) == NULL )
3930                 return false;
3931         chdir(buffer);
3932         if (strlen(otherdir) >= strlen(work))
3933         {
3934                 otherdir[strlen(work)] = '\0';
3935                 if (!strcmp(otherdir,work))
3936                 {
3937                         return true;
3938                 }
3939                 return false;
3940         }
3941         else return false;
3942 }
3943
3944 std::string GetFullProgDir(char** argv, int argc)
3945 {
3946         char work[MAXBUF];
3947         strlcpy(work,argv[0],MAXBUF);
3948         int p = strlen(work);
3949         // we just want the dir
3950         while (strlen(work))
3951         {
3952                 if (work[p] == '/')
3953                 {
3954                         work[p] = '\0';
3955                         break;
3956                 }
3957                 work[p--] = '\0';
3958         }
3959         char buffer[MAXBUF], otherdir[MAXBUF];
3960         // Get the current working directory
3961         if( getcwd( buffer, MAXBUF ) == NULL )
3962                 return "";
3963         chdir(work);
3964         if( getcwd( otherdir, MAXBUF ) == NULL )
3965                 return "";
3966         chdir(buffer);
3967         return otherdir;
3968 }
3969
3970 bool LoadModule(const char* filename)
3971 {
3972         char modfile[MAXBUF];
3973         snprintf(modfile,MAXBUF,"%s/%s",ModPath,filename);
3974         std::string filename_str = filename;
3975         if (!DirValid(modfile))
3976         {
3977                 log(DEFAULT,"Module %s is not within the modules directory.",modfile);
3978                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
3979                 return false;
3980         }
3981         log(DEBUG,"Loading module: %s",modfile);
3982         if (FileExists(modfile))
3983         {
3984                 for (int j = 0; j < module_names.size(); j++)
3985                 {
3986                         if (module_names[j] == filename_str)
3987                         {
3988                                 log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
3989                                 snprintf(MODERR,MAXBUF,"Module already loaded");
3990                                 return false;
3991                         }
3992                 }
3993                 ircd_module* a = new ircd_module(modfile);
3994                 factory[MODCOUNT+1] = a;
3995                 if (factory[MODCOUNT+1]->LastError())
3996                 {
3997                         log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
3998                         snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
3999                         MODCOUNT--;
4000                         return false;
4001                 }
4002                 if (factory[MODCOUNT+1]->factory)
4003                 {
4004                         Module* m = factory[MODCOUNT+1]->factory->CreateModule();
4005                         modules[MODCOUNT+1] = m;
4006                         /* save the module and the module's classfactory, if
4007                          * this isnt done, random crashes can occur :/ */
4008                         module_names.push_back(filename);
4009                 }
4010                 else
4011                 {
4012                         log(DEFAULT,"Unable to load %s",modfile);
4013                         snprintf(MODERR,MAXBUF,"Factory function failed!");
4014                         return false;
4015                 }
4016         }
4017         else
4018         {
4019                 log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
4020                 snprintf(MODERR,MAXBUF,"Module file could not be found");
4021                 return false;
4022         }
4023         MODCOUNT++;
4024         return true;
4025 }
4026
4027 int InspIRCd(char** argv, int argc)
4028 {
4029         struct sockaddr_in client,server;
4030         char addrs[MAXBUF][255];
4031         int incomingSockfd, result = TRUE;
4032         socklen_t length;
4033         int count = 0;
4034         int selectResult = 0, selectResult2 = 0;
4035         char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
4036         fd_set selectFds;
4037         timeval tv;
4038
4039         std::string logpath = GetFullProgDir(argv,argc) + "/ircd.log";
4040         log_file = fopen(logpath.c_str(),"a+");
4041         if (!log_file)
4042         {
4043                 printf("ERROR: Could not write to logfile %s, bailing!\n\n",logpath.c_str());
4044                 Exit(ERROR);
4045         }
4046         printf("Logging to %s...\n",logpath.c_str());
4047
4048         log(DEFAULT,"$Id$");
4049         if (geteuid() == 0)
4050         {
4051                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
4052                 Exit(ERROR);
4053                 log(DEFAULT,"InspIRCd: startup: not starting with UID 0!");
4054         }
4055         SetupCommandTable();
4056         log(DEBUG,"InspIRCd: startup: default command table set up");
4057
4058         ReadConfig(true,NULL);
4059         if (DieValue[0])
4060         {
4061                 printf("WARNING: %s\n\n",DieValue);
4062                 log(DEFAULT,"Ut-Oh, somebody didn't read their config file: '%s'",DieValue);
4063                 exit(0);
4064         }
4065         log(DEBUG,"InspIRCd: startup: read config");
4066
4067         int clientportcount = 0, serverportcount = 0;
4068
4069         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
4070         {
4071                 ConfValue("bind","port",count,configToken,&config_f);
4072                 ConfValue("bind","address",count,Addr,&config_f);
4073                 ConfValue("bind","type",count,Type,&config_f);
4074                 if (!strcmp(Type,"servers"))
4075                 {
4076                         char Default[MAXBUF];
4077                         strcpy(Default,"no");
4078                         ConfValue("bind","default",count,Default,&config_f);
4079                         if (strchr(Default,'y'))
4080                         {
4081                                 defaultRoute = serverportcount;
4082                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
4083                         }
4084                         me[serverportcount] = new serverrec(ServerName,100L,false);
4085                         if (!me[serverportcount]->CreateListener(Addr,atoi(configToken)))
4086                         {
4087                                 log(DEFAULT,"Warning: Failed to bind port %lu",(unsigned long)atoi(configToken));
4088                                 printf("Warning: Failed to bind port %lu\n",(unsigned long)atoi(configToken));
4089                         }
4090                         else
4091                         {
4092                                 serverportcount++;
4093                         }
4094                 }
4095                 else
4096                 {
4097                         ports[clientportcount] = atoi(configToken);
4098                         strlcpy(addrs[clientportcount],Addr,256);
4099                         clientportcount++;
4100                 }
4101                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
4102         }
4103         portCount = clientportcount;
4104         SERVERportCount = serverportcount;
4105
4106         log(DEBUG,"InspIRCd: startup: read %lu total client ports and %lu total server ports",(unsigned long)portCount,(unsigned long)SERVERportCount);
4107         log(DEBUG,"InspIRCd: startup: InspIRCd is now starting!");
4108
4109         printf("\n");
4110
4111         /* BugFix By Craig! :p */
4112         MODCOUNT = -1;
4113         for (count = 0; count < ConfValueEnum("module",&config_f); count++)
4114         {
4115                 ConfValue("module","name",count,configToken,&config_f);
4116                 printf("Loading module... \033[1;32m%s\033[0m\n",configToken);
4117                 if (!LoadModule(configToken))
4118                 {
4119                         log(DEFAULT,"Exiting due to a module loader error.");
4120                         printf("\nThere was an error loading a module: %s\n\nYou might want to do './inspircd start' instead of 'bin/inspircd'\n\n",ModuleError());
4121                         Exit(0);
4122                 }
4123         }
4124         log(DEFAULT,"Total loaded modules: %lu",(unsigned long)MODCOUNT+1);
4125
4126         startup_time = time(NULL);
4127
4128         char PID[MAXBUF];
4129         ConfValue("pid","file",0,PID,&config_f);
4130         // write once here, to try it out and make sure its ok
4131         WritePID(PID);
4132
4133         /* setup select call */
4134 #ifndef USE_KQUEUE
4135         FD_ZERO(&selectFds);
4136 #endif
4137         log(DEBUG,"InspIRCd: startup: zero selects");
4138         log(VERBOSE,"InspIRCd: startup: portCount = %lu", (unsigned long)portCount);
4139
4140         for (count = 0; count < portCount; count++)
4141         {
4142                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
4143                 {
4144                         log(DEBUG,"InspIRCd: startup: bad fd %lu",(unsigned long)openSockfd[boundPortCount]);
4145                         return(ERROR);
4146                 }
4147                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
4148                 {
4149                         log(DEFAULT,"InspIRCd: startup: failed to bind port %lu",(unsigned long)ports[count]);
4150                 }
4151                 else    /* well we at least bound to one socket so we'll continue */
4152                 {
4153                         boundPortCount++;
4154                 }
4155         }
4156
4157         log(DEBUG,"InspIRCd: startup: total bound ports %lu",(unsigned long)boundPortCount);
4158
4159         /* if we didn't bind to anything then abort */
4160         if (boundPortCount == 0)
4161         {
4162                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
4163                 printf("\nERROR: Was not able to bind any of %lu ports! Please check your configuration.\n\n", (unsigned long)portCount);
4164                 return (ERROR);
4165         }
4166
4167
4168         printf("\nInspIRCd is now running!\n");
4169
4170         if (nofork)
4171         {
4172                 log(VERBOSE,"Not forking as -nofork was specified");
4173         }
4174         else
4175         {
4176                 if (DaemonSeed() == ERROR)
4177                 {
4178                         log(DEFAULT,"InspIRCd: startup: can't daemonise");
4179                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
4180                         Exit(ERROR);
4181                 }
4182         }
4183
4184         // BUGFIX: We cannot initialize this before forking, as the kqueue data is not inherited by child processes!
4185 #ifdef USE_KQUEUE
4186         kq = kqueue();
4187         lkq = kqueue();
4188         skq = kqueue();
4189         if ((kq == -1) || (lkq == -1) || (skq == -1))
4190         {
4191                 log(DEFAULT,"main: kqueue() failed!");
4192                 printf("ERROR: could not initialise kqueue event system. Shutting down.\n");
4193                 Exit(ERROR);
4194         }
4195 #endif
4196
4197
4198 #ifdef USE_KQUEUE
4199         log(DEFAULT,"kqueue socket engine is enabled. Filling listen list.");
4200         for (count = 0; count < boundPortCount; count++)
4201         {
4202                 struct kevent ke;
4203                 log(DEBUG,"kqueue: Add listening socket to events, kq=%d socket=%d",lkq,openSockfd[count]);
4204                 EV_SET(&ke, openSockfd[count], EVFILT_READ, EV_ADD, 0, 5, NULL);
4205                 int i = kevent(lkq, &ke, 1, 0, 0, NULL);
4206                 if (i == -1)
4207                 {
4208                         log(DEFAULT,"main: add listen ports to kqueue failed!");
4209                         printf("ERROR: could not initialise listening sockets in kqueue. Shutting down.\n");
4210                 }
4211         }
4212         for (int t = 0; t != SERVERportCount; t++)
4213         {
4214                 struct kevent ke;
4215                 if (me[t])
4216                 {
4217                         log(DEBUG,"kqueue: Add listening SERVER socket to events, kq=%d socket=%d",skq,me[t]->fd);
4218                         EV_SET(&ke, me[t]->fd, EVFILT_READ, EV_ADD, 0, 5, NULL);
4219                         int i = kevent(skq, &ke, 1, 0, 0, NULL);
4220                         if (i == -1)
4221                         {
4222                                 log(DEFAULT,"main: add server listen ports to kqueue failed!");
4223                                 printf("ERROR: could not initialise listening server sockets in kqueue. Shutting down.\n");
4224                         }
4225                 }
4226         }
4227
4228
4229 #else
4230         log(DEFAULT,"Using standard select socket engine.");
4231 #endif
4232
4233         WritePID(PID);
4234
4235         length = sizeof (client);
4236         char tcp_msg[MAXBUF],tcp_host[MAXBUF],tcp_sum[MAXBUF];
4237
4238 #ifdef USE_KQUEUE
4239         struct kevent ke;
4240         struct kevent ke_list[33];
4241         struct timespec ts;
4242 #endif
4243         fd_set serverfds;
4244         timeval tvs;
4245         tvs.tv_usec = 10000L;
4246         tvs.tv_sec = 0;
4247         tv.tv_sec = 0;
4248         tv.tv_usec = 10000L;
4249         char data[65536];
4250         timeval tval;
4251         fd_set sfd;
4252         tval.tv_usec = 10000L;
4253         tval.tv_sec = 0;
4254         int total_in_this_set = 0;
4255         int i = 0, v = 0, j = 0, cycle_iter = 0;
4256         bool expire_run = false;
4257
4258         /* main loop, this never returns */
4259         for (;;)
4260         {
4261 #ifdef _POSIX_PRIORITY_SCHEDULING
4262                 sched_yield();
4263 #endif
4264 #ifndef USE_KQUEUE
4265                 FD_ZERO(&sfd);
4266 #endif
4267
4268                 // we only read time() once per iteration rather than tons of times!
4269                 OLDTIME = TIME;
4270                 TIME = time(NULL);
4271
4272                 dns_poll();
4273
4274                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
4275                 // them in a list, then reap the list every second or so.
4276                 if (((TIME % 5) == 0) && (!expire_run))
4277                 {
4278                         expire_lines();
4279                         FOREACH_MOD OnBackgroundTimer(TIME);
4280                         expire_run = true;
4281                         continue;
4282                 }
4283                 if ((TIME % 5) == 1)
4284                         expire_run = false;
4285
4286                 // fix by brain - this must be below any manipulation of the hashmap by modules
4287                 user_hash::iterator count2 = clientlist.begin();
4288
4289 #ifdef USE_KQUEUE
4290                 ts.tv_sec = 0;
4291                 ts.tv_nsec = 30000L;
4292                 i = kevent(skq, NULL, 0, &ke, 1, &ts);
4293                 if (i > 0)
4294                 {
4295                         log(DEBUG,"kqueue: Listening server socket event, i=%d, ke.ident=%d",i,ke.ident);
4296                         for (int x = 0; x != SERVERportCount; x++)
4297                         {
4298                                 if ((me[x]) && (ke.ident == me[x]->fd))
4299                                 {
4300
4301 #else
4302                 FD_ZERO(&serverfds);
4303                 for (int x = 0; x != SERVERportCount; x++)
4304                 {
4305                         if (me[x])
4306                                 FD_SET(me[x]->fd, &serverfds);
4307                 }
4308                 tvs.tv_usec = 30000L;
4309                 tvs.tv_sec = 0;
4310                 int servresult = select(32767, &serverfds, NULL, NULL, &tvs);
4311                 if (servresult > 0)
4312                 {
4313                         for (int x = 0; x != SERVERportCount; x++)
4314                         {
4315                                 if ((me[x]) && (FD_ISSET (me[x]->fd, &serverfds)))
4316                                 {
4317 #endif
4318                                         char remotehost[MAXBUF],resolved[MAXBUF];
4319                                         length = sizeof (client);
4320                                         incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length);
4321                                         if (incomingSockfd != -1)
4322                                         {
4323                                                 strlcpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF);
4324                                                 if(CleanAndResolve(resolved, remotehost) != TRUE)
4325                                                 {
4326                                                         strlcpy(resolved,remotehost,MAXBUF);
4327                                                 }
4328                                                 // add to this connections ircd_connector vector
4329                                                 // *FIX* - we need the LOCAL port not the remote port in &client!
4330                                                 me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port);
4331                                         }
4332                                 }
4333                         }
4334                 }
4335
4336                 for (int x = 0; x < SERVERportCount; x++)
4337                 {
4338                         std::deque<std::string> msgs;
4339                         std::deque<std::string> sums;
4340                         msgs.clear();
4341                         sums.clear();
4342                         if ((me[x]) && (me[x]->RecvPacket(msgs, tcp_host, sums)))
4343                         {
4344                                 for (int ctr = 0; ctr < msgs.size(); ctr++)
4345                                 {
4346                                         strlcpy(tcp_msg,msgs[ctr].c_str(),MAXBUF);
4347                                         strlcpy(tcp_sum,msgs[ctr].c_str(),MAXBUF);
4348                                         log(DEBUG,"Processing: %s",tcp_msg);
4349                                         if (!tcp_msg[0])
4350                                         {
4351                                                 log(DEBUG,"Invalid string from %s [route%lu]",tcp_host,(unsigned long)x);
4352                                                 break;
4353                                         }
4354                                         // during a netburst, send all data to all other linked servers
4355                                         if ((((nb_start>0) && (tcp_msg[0] != 'Y') && (tcp_msg[0] != 'X') && (tcp_msg[0] != 'F'))) || (is_uline(tcp_host)))
4356                                         {
4357                                                 if (is_uline(tcp_host))
4358                                                 {
4359                                                         if ((tcp_msg[0] != 'Y') && (tcp_msg[0] != 'X') && (tcp_msg[0] != 'F'))
4360                                                         {
4361                                                                 NetSendToAllExcept_WithSum(tcp_host,tcp_msg,tcp_sum);
4362                                                         }
4363                                                 }
4364                                                 else
4365                                                         NetSendToAllExcept_WithSum(tcp_host,tcp_msg,tcp_sum);
4366                                         }
4367                                         std::string msg = tcp_msg;
4368                                         FOREACH_MOD OnPacketReceive(msg,tcp_host);
4369                                         strlcpy(tcp_msg,msg.c_str(),MAXBUF);
4370                                         handle_link_packet(tcp_msg, tcp_host, me[x], tcp_sum);
4371                                 }
4372                                 goto label;
4373                         }
4374                 }
4375
4376         while (count2 != clientlist.end())
4377         {
4378 #ifndef USE_KQUEUE
4379                 FD_ZERO(&sfd);
4380 #endif
4381
4382                 total_in_this_set = 0;
4383
4384                 user_hash::iterator xcount = count2;
4385                 user_hash::iterator endingiter = count2;
4386
4387                 if (count2 == clientlist.end()) break;
4388
4389                 userrec* curr = NULL;
4390
4391                 if (count2->second)
4392                         curr = count2->second;
4393
4394                 if ((curr) && (curr->fd != 0))
4395                 {
4396 #ifdef _POSIX_PRIORITY_SCHEDULING
4397         sched_yield();
4398 #endif
4399                         // assemble up to 64 sockets into an fd_set
4400                         // to implement a pooling mechanism.
4401                         //
4402                         // This should be up to 64x faster than the
4403                         // old implementation.
4404 #ifndef USE_KQUEUE
4405                         while (total_in_this_set < 1024)
4406                         {
4407                                 if (count2 != clientlist.end())
4408                                 {
4409                                         curr = count2->second;
4410                                         // we don't check the state of remote users.
4411                                         if ((curr->fd != -1) && (curr->fd != FD_MAGIC_NUMBER))
4412                                         {
4413                                                 curr->FlushWriteBuf();
4414                                                 if (curr->GetWriteError() != "")
4415                                                 {
4416                                                         log(DEBUG,"InspIRCd: write error: %s",curr->GetWriteError().c_str());
4417                                                         kill_link(curr,curr->GetWriteError().c_str());
4418                                                         goto label;
4419                                                 }
4420
4421                                                 FD_SET (curr->fd, &sfd);
4422
4423                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
4424                                                 // their connection class.
4425                                                 if ((TIME > curr->timeout) && (curr->registered != 7))
4426                                                 {
4427                                                         log(DEBUG,"InspIRCd: registration timeout: %s",curr->nick);
4428                                                         kill_link(curr,"Registration timeout");
4429                                                         goto label;
4430                                                 }
4431                                                 if ((TIME > curr->signon) && (curr->registered == 3) && (AllModulesReportReady(curr)))
4432                                                 {
4433                                                         log(DEBUG,"signon exceed, registered=3, and modules ready, OK");
4434                                                         curr->dns_done = true;
4435                                                         statsDnsBad++;
4436                                                         FullConnectUser(curr);
4437                                                         goto label;
4438                                                 }
4439                                                 if ((curr->dns_done) && (curr->registered == 3) && (AllModulesReportReady(curr))) // both NICK and USER... and DNS
4440                                                 {
4441                                                         log(DEBUG,"dns done, registered=3, and modules ready, OK");
4442                                                         FullConnectUser(curr);
4443                                                         goto label;
4444                                                 }
4445                                                 if ((TIME > curr->nping) && (isnick(curr->nick)) && (curr->registered == 7))
4446                                                 {
4447                                                         if ((!curr->lastping) && (curr->registered == 7))
4448                                                         {
4449                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",curr->nick);
4450                                                                 kill_link(curr,"Ping timeout");
4451                                                                 goto label;
4452                                                         }
4453                                                         Write(curr->fd,"PING :%s",ServerName);
4454                                                         log(DEBUG,"InspIRCd: pinging: %s",curr->nick);
4455                                                         curr->lastping = 0;
4456                                                         curr->nping = TIME+curr->pingmax;       // was hard coded to 120
4457                                                 }
4458                                         }
4459                                         count2++;
4460                                         total_in_this_set++;
4461                                 }
4462                                 else break;
4463                         }
4464                         endingiter = count2;
4465                         count2 = xcount; // roll back to where we were
4466 #else
4467                         // 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.
4468                         // TODO: We dont need to do all this EVERY loop iteration, tone down the visits to this if we're using kqueue.
4469                         cycle_iter++;
4470                         if (cycle_iter > 10) while (count2 != clientlist.end())
4471                         {
4472                                 cycle_iter = 0;
4473                                 if (count2 != clientlist.end())
4474                                 {
4475                                         curr = count2->second;
4476                                         // we don't check the state of remote users.
4477                                         if ((curr->fd != -1) && (curr->fd != FD_MAGIC_NUMBER))
4478                                         {
4479
4480                                                 curr->FlushWriteBuf();
4481                                                 if (curr->GetWriteError() != "")
4482                                                 {
4483                                                         log(DEBUG,"InspIRCd: write error: %s",curr->GetWriteError().c_str());
4484                                                         kill_link(curr,curr->GetWriteError().c_str());
4485                                                         goto label;
4486                                                 }
4487
4488                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
4489                                                 // their connection class.
4490                                                 if ((TIME > curr->timeout) && (curr->registered != 7))
4491                                                 {
4492                                                         log(DEBUG,"InspIRCd: registration timeout: %s",curr->nick);
4493                                                         kill_link(curr,"Registration timeout");
4494                                                         goto label;
4495                                                 }
4496                                                 if ((TIME > curr->signon) && (curr->registered == 3) && (AllModulesReportReady(curr)))
4497                                                 {
4498                                                         log(DEBUG,"signon exceed, registered=3, and modules ready, OK: %d %d",TIME,curr->signon);
4499                                                         curr->dns_done = true;
4500                                                         statsDnsBad++;
4501                                                         FullConnectUser(curr);
4502                                                         goto label;
4503                                                 }
4504                                                 if ((curr->dns_done) && (curr->registered == 3) && (AllModulesReportReady(curr)))
4505                                                 {
4506                                                         log(DEBUG,"dns done, registered=3, and modules ready, OK");
4507                                                         FullConnectUser(curr);
4508                                                         goto label;
4509                                                 }
4510                                                 if ((TIME > curr->nping) && (isnick(curr->nick)) && (curr->registered == 7))
4511                                                 {
4512                                                         if ((!curr->lastping) && (curr->registered == 7))
4513                                                         {
4514                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",curr->nick);
4515                                                                 kill_link(curr,"Ping timeout");
4516                                                                 goto label;
4517                                                         }
4518                                                         Write(curr->fd,"PING :%s",ServerName);
4519                                                         log(DEBUG,"InspIRCd: pinging: %s",curr->nick);
4520                                                         curr->lastping = 0;
4521                                                         curr->nping = TIME+curr->pingmax;       // was hard coded to 120
4522                                                 }
4523                                         }
4524                                 }
4525                                 else break;
4526                                 count2++;
4527                         }
4528                         // increment the counter right to the end of the list, as kqueue processes everything in one go
4529 #endif
4530
4531                         v = 0;
4532
4533 #ifdef USE_KQUEUE
4534                         ts.tv_sec = 0;
4535                         ts.tv_nsec = 1000L;
4536                         // for now, we only read 1 event. We could read soooo many more :)
4537                         int i = kevent(kq, NULL, 0, &ke, 1, &ts);
4538                         if (i > 0)
4539                         {
4540                                 log(DEBUG,"kevent call: kq=%d, i=%d",kq,i);
4541                                 // KQUEUE: kevent gives us ONE fd which is ready to have something done to it. Do something to it.
4542                                 userrec* cu = fd_ref_table[ke.ident];
4543 #else
4544                         tval.tv_usec = 1000L;
4545                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
4546
4547                         // now loop through all of the items in this pool if any are waiting
4548                         if (selectResult2 > 0)
4549                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
4550                         {
4551                                 // SELECT: we have to iterate...
4552                                 userrec* cu = count2a->second;
4553 #endif
4554
4555 #ifdef _POSIX_PRIORITY_SCHEDULING
4556                                 sched_yield();
4557 #endif
4558                                 result = EAGAIN;
4559 #ifdef USE_KQUEUE
4560                                 // KQUEUE: We already know we have a valid FD. No checks needed.
4561                                 if ((cu->fd != FD_MAGIC_NUMBER) && (cu->fd != -1))
4562 #else
4563                                 // SELECT: We don't know if our FD is valid.
4564                                 if ((cu->fd != FD_MAGIC_NUMBER) && (cu->fd != -1) && (FD_ISSET (cu->fd, &sfd)))
4565 #endif
4566                                 {
4567                                         log(DEBUG,"Data waiting on socket %d",cu->fd);
4568                                         int MOD_RESULT = 0;
4569                                         int result2 = 0;
4570                                         FOREACH_RESULT(OnRawSocketRead(cu->fd,data,65535,result2));
4571                                         if (!MOD_RESULT)
4572                                         {
4573                                                 result = read(cu->fd, data, 65535);
4574                                         }
4575                                         else result = result2;
4576                                         log(DEBUG,"Read result: %d",result);
4577                                         if (result)
4578                                         {
4579                                                 statsRecv += result;
4580                                                 // perform a check on the raw buffer as an array (not a string!) to remove
4581                                                 // characters 0 and 7 which are illegal in the RFC - replace them with spaces.
4582                                                 // hopefully this should stop even more people whining about "Unknown command: *"
4583                                                 for (int checker = 0; checker < result; checker++)
4584                                                 {
4585                                                         if ((data[checker] == 0) || (data[checker] == 7))
4586                                                                 data[checker] = ' ';
4587                                                 }
4588                                                 if (result > 0)
4589                                                         data[result] = '\0';
4590                                                 userrec* current = cu;
4591                                                 int currfd = current->fd;
4592                                                 int floodlines = 0;
4593                                                 // add the data to the users buffer
4594                                                 if (result > 0)
4595                                                 if (!current->AddBuffer(data))
4596                                                 {
4597                                                         // AddBuffer returned false, theres too much data in the user's buffer and theyre up to no good.
4598                                                         if (current->registered == 7)
4599                                                         {
4600                                                                 kill_link(current,"RecvQ exceeded");
4601                                                         }
4602                                                         else
4603                                                         {
4604                                                                 WriteOpers("*** Excess flood from %s",current->ip);
4605                                                                 log(DEFAULT,"Excess flood from: %s",current->ip);
4606                                                                 add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
4607                                                                 apply_lines();
4608                                                         }
4609                                                         goto label;
4610                                                 }
4611                                                 if (current->recvq.length() > NetBufferSize)
4612                                                 {
4613                                                         if (current->registered == 7)
4614                                                         {
4615                                                                 kill_link(current,"RecvQ exceeded");
4616                                                         }
4617                                                         else
4618                                                         {
4619                                                                 WriteOpers("*** Excess flood from %s",current->ip);
4620                                                                 log(DEFAULT,"Excess flood from: %s",current->ip);
4621                                                                 add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
4622                                                                 apply_lines();
4623                                                         }
4624                                                         goto label;
4625                                                 }
4626                                                 // while there are complete lines to process...
4627                                                 while (current->BufferIsReady())
4628                                                 {
4629                                                         floodlines++;
4630                                                         if (TIME > current->reset_due)
4631                                                         {
4632                                                                 current->reset_due = TIME + current->threshold;
4633                                                                 current->lines_in = 0;
4634                                                         }
4635                                                         current->lines_in++;
4636                                                         if (current->lines_in > current->flood)
4637                                                         {
4638                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4639                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4640                                                                 kill_link(current,"Excess flood");
4641                                                                 goto label;
4642                                                         }
4643                                                         if ((floodlines > current->flood) && (current->flood != 0))
4644                                                         {
4645                                                                 if (current->registered == 7)
4646                                                                 {
4647                                                                         log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4648                                                                         WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4649                                                                         kill_link(current,"Excess flood");
4650                                                                 }
4651                                                                 else
4652                                                                 {
4653                                                                         add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
4654                                                                         apply_lines();
4655                                                                 }
4656                                                                 goto label;
4657                                                         }
4658                                                         char sanitized[MAXBUF];
4659                                                         // use GetBuffer to copy single lines into the sanitized string
4660                                                         std::string single_line = current->GetBuffer();
4661                                                         current->bytes_in += single_line.length();
4662                                                         current->cmds_in++;
4663                                                         if (single_line.length()>512)
4664                                                         {
4665                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4666                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4667                                                                 kill_link(current,"Excess flood");
4668                                                                 goto label;
4669                                                         }
4670                                                         strlcpy(sanitized,single_line.c_str(),MAXBUF);
4671                                                         if (*sanitized)
4672                                                         {
4673                                                                 userrec* old_comp = fd_ref_table[currfd];
4674                                                                 // we're gonna re-scan to check if the nick is gone, after every
4675                                                                 // command - if it has, we're gonna bail
4676                                                                 process_buffer(sanitized,current);
4677                                                                 // look for the user's record in case it's changed... if theyve quit,
4678                                                                 // we cant do anything more with their buffer, so bail.
4679                                                                 // there used to be an ugly, slow loop here. Now we have a reference
4680                                                                 // table, life is much easier (and FASTER)
4681                                                                 userrec* new_comp = fd_ref_table[currfd];
4682                                                                 if ((currfd < 0) || (!fd_ref_table[currfd]) || (old_comp != new_comp))
4683                                                                         goto label;
4684
4685                                                         }
4686                                                 }
4687                                                 goto label;
4688                                         }
4689
4690                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
4691                                         {
4692                                                 log(DEBUG,"killing: %s",cu->nick);
4693                                                 kill_link(cu,strerror(errno));
4694                                                 goto label;
4695                                         }
4696                                 }
4697                                 // result EAGAIN means nothing read
4698                                 if (result == EAGAIN)
4699                                 {
4700                                 }
4701                                 else
4702                                 if (result == 0)
4703                                 {
4704 #ifndef USE_KQUEUE
4705                                         if (count2->second)
4706                                         {
4707 #endif
4708                                                 log(DEBUG,"InspIRCd: Exited: %s",cu->nick);
4709                                                 kill_link(cu,"Client exited");
4710                                                 // must bail here? kill_link removes the hash, corrupting the iterator
4711                                                 log(DEBUG,"Bailing from client exit");
4712                                                 goto label;
4713 #ifndef USE_KQUEUE
4714                                         }
4715 #endif
4716                                 }
4717                                 else if (result > 0)
4718                                 {
4719                                 }
4720                         }
4721                 }
4722                 for (int q = 0; q < total_in_this_set; q++)
4723                 {
4724                         count2++;
4725                 }
4726         }
4727
4728 #ifdef _POSIX_PRIORITY_SCHEDULING
4729         sched_yield();
4730 #endif
4731
4732 #ifndef USE_KQUEUE
4733         // set up select call
4734         for (count = 0; count < boundPortCount; count++)
4735         {
4736                 FD_SET (openSockfd[count], &selectFds);
4737         }
4738
4739         tv.tv_usec = 30000L;
4740         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
4741
4742         /* select is reporting a waiting socket. Poll them all to find out which */
4743         if (selectResult > 0)
4744         {
4745                 for (count = 0; count < boundPortCount; count++)
4746                 {
4747                         if (FD_ISSET (openSockfd[count], &selectFds))
4748                         {
4749 #else
4750         ts.tv_sec = 0;
4751         ts.tv_nsec = 30000L;
4752         i = kevent(lkq, NULL, 0, ke_list, 32, &ts);
4753         if (i > 0) for (j = 0; j < i; j++)
4754         {
4755                 log(DEBUG,"kqueue: Listening socket event, i=%d, ke.ident=%d",i,ke.ident);
4756                 // this isnt as efficient as it could be, we could create a reference table
4757                 // to reference bound ports by fd, but this isnt a big bottleneck as the actual
4758                 // number of listening ports on the average ircd is a small number (less than 20)
4759                 // compared to the number of clients (possibly over 2000)
4760                 for (count = 0; count < boundPortCount; count++)
4761                 {
4762                         if (ke_list[j].ident == openSockfd[count])
4763                         {
4764 #endif
4765                                 char target[MAXBUF], resolved[MAXBUF];
4766                                 length = sizeof (client);
4767                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
4768
4769                                 strlcpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
4770                                 strlcpy (resolved, target, MAXBUF);
4771
4772                                 if (incomingSockfd < 0)
4773                                 {
4774                                         WriteOpers("*** WARNING: Accept failed on port %lu (%s)",(unsigned long)ports[count],target);
4775                                         log(DEBUG,"InspIRCd: accept failed: %lu",(unsigned long)ports[count]);
4776                                         statsRefused++;
4777                                 }
4778                                 else
4779                                 {
4780                                         FOREACH_MOD OnRawSocketAccept(incomingSockfd, resolved, ports[count]);
4781                                         statsAccept++;
4782                                         AddClient(incomingSockfd, resolved, ports[count], false, inet_ntoa (client.sin_addr));
4783                                         log(DEBUG,"InspIRCd: adding client on port %lu fd=%lu",(unsigned long)ports[count],(unsigned long)incomingSockfd);
4784                                 }
4785                                 //goto label;
4786                         }
4787                 }
4788         }
4789         label:
4790         if (0) {};
4791 #ifdef _POSIX_PRIORITY_SCHEDULING
4792         sched_yield();
4793         sched_yield();
4794 #endif
4795 }
4796 /* not reached */
4797 close (incomingSockfd);
4798 }
4799