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 #include <cstdio>
  31 #include <time.h>
  32 #include <string>
  33 #ifdef GCC3
  34 #include <ext/hash_map>
  35 #else
  36 #include <hash_map>
  37 #endif
  38 #include <map>
  39 #include <sstream>
  40 #include <vector>
  41 #include <errno.h>
  42 #include <deque>
  43 #include <errno.h>
  44 #include <unistd.h>
  45 #include <sched.h>
  46 #include "connection.h"
  47 #include "users.h"
  48 #include "servers.h"
  49 #include "ctables.h"
  50 #include "globals.h"
  51 #include "modules.h"
  52 #include "dynamic.h"
  53 #include "wildcard.h"
  54 #include "message.h"
  55 #include "mode.h"
  56 #include "commands.h"
  57 #include "xline.h"
  58 #include "inspstring.h"
  59 #include "dnsqueue.h"
  60
  61 #ifdef GCC3
  62 #define nspace __gnu_cxx
  63 #else
  64 #define nspace std
  65 #endif
  66
  67 int LogLevel = DEFAULT;
  68 char ServerName[MAXBUF];
  69 char Network[MAXBUF];
  70 char ServerDesc[MAXBUF];
  71 char AdminName[MAXBUF];
  72 char AdminEmail[MAXBUF];
  73 char AdminNick[MAXBUF];
  74 char diepass[MAXBUF];
  75 char restartpass[MAXBUF];
  76 char motd[MAXBUF];
  77 char rules[MAXBUF];
  78 char list[MAXBUF];
  79 char PrefixQuit[MAXBUF];
  80 char DieValue[MAXBUF];
  81 char DNSServer[MAXBUF];
  82 int debugging =  0;
  83 int WHOWAS_STALE = 48; // default WHOWAS Entries last 2 days before they go 'stale'
  84 int WHOWAS_MAX = 100;  // default 100 people maximum in the WHOWAS list
  85 int DieDelay  =  5;
  86 time_t startup_time = time(NULL);
  87 int NetBufferSize = 10240; // NetBufferSize used as the buffer size for all read() ops
  88 extern int MaxWhoResults;
  89 time_t nb_start = 0;
  90 int dns_timeout = 5;
  91
  92 char DisabledCommands[MAXBUF];
  93
  94 bool AllowHalfop = true;
  95 bool AllowProtect = true;
  96 bool AllowFounder = true;
  97
  98 extern std::vector<Module*> modules;
  99 std::vector<std::string> module_names;
 100 extern std::vector<ircd_module*> factory;
 101
 102 extern int MODCOUNT;
 103 int openSockfd[MAXSOCKS];
 104 bool nofork = false;
 105 bool unlimitcore = false;
 106
 107 time_t TIME = time(NULL);
 108
 109 namespace nspace
 110 {
 111 #ifdef GCC34
 112         template<> struct hash<in_addr>
 113 #else
 114         template<> struct nspace::hash<in_addr>
 115 #endif
 116         {
 117                 size_t operator()(const struct in_addr &a) const
 118                 {
 119                         size_t q;
 120                         memcpy(&q,&a,sizeof(size_t));
 121                         return q;
 122                 }
 123         };
 124 #ifdef GCC34
 125         template<> struct hash<string>
 126 #else
 127         template<> struct nspace::hash<string>
 128 #endif
 129         {
 130                 size_t operator()(const string &s) const
 131                 {
 132                         char a[MAXBUF];
 133                         static struct hash<const char *> strhash;
 134                         strlcpy(a,s.c_str(),MAXBUF);
 135                         strlower(a);
 136                         return strhash(a);
 137                 }
 138         };
 139 }
 140
 141
 142 struct StrHashComp
 143 {
 144
 145         bool operator()(const string& s1, const string& s2) const
 146         {
 147                 char a[MAXBUF],b[MAXBUF];
 148                 strlcpy(a,s1.c_str(),MAXBUF);
 149                 strlcpy(b,s2.c_str(),MAXBUF);
 150                 strlower(a);
 151                 strlower(b);
 152                 return (strcasecmp(a,b) == 0);
 153         }
 154
 155 };
 156
 157 struct InAddr_HashComp
 158 {
 159
 160         bool operator()(const in_addr &s1, const in_addr &s2) const
 161         {
 162                 size_t q;
 163                 size_t p;
 164
 165                 memcpy(&q,&s1,sizeof(size_t));
 166                 memcpy(&p,&s2,sizeof(size_t));
 167
 168                 return (q == p);
 169         }
 170
 171 };
 172
 173
 174 typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, StrHashComp> user_hash;
 175 typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, StrHashComp> chan_hash;
 176 typedef nspace::hash_map<in_addr,string*, nspace::hash<in_addr>, InAddr_HashComp> address_cache;
 177 typedef std::deque<command_t> command_table;
 178
 179 serverrec* me[32];
 180
 181 FILE *log_file;
 182
 183 user_hash clientlist;
 184 chan_hash chanlist;
 185 user_hash whowas;
 186 command_table cmdlist;
 187 file_cache MOTD;
 188 file_cache RULES;
 189 address_cache IP;
 190
 191 ClassVector Classes;
 192
 193 struct linger linger = { 0 };
 194 char MyExecutable[1024];
 195 int boundPortCount = 0;
 196 int portCount = 0, UDPportCount = 0, ports[MAXSOCKS];
 197 int defaultRoute = 0;
 198 char ModPath[MAXBUF];
 199
 200 connection C;
 201
 202 long MyKey = C.GenKey();
 203
 204 /* prototypes */
 205
 206 int has_channel(userrec *u, chanrec *c);
 207 int usercount(chanrec *c);
 208 int usercount_i(chanrec *c);
 209 char* Passwd(userrec *user);
 210 bool IsDenied(userrec *user);
 211 void AddWhoWas(userrec* u);
 212
 213 std::vector<long> auth_cookies;
 214 std::stringstream config_f(stringstream::in | stringstream::out);
 215
 216 std::vector<userrec*> all_opers;
 217
 218 void AddOper(userrec* user)
 219 {
 220         log(DEBUG,"Oper added to optimization list");
 221         all_opers.push_back(user);
 222 }
 223
 224 void DeleteOper(userrec* user)
 225 {
 226         for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 227         {
 228                 if (*a == user)
 229                 {
 230                         log(DEBUG,"Oper removed from optimization list");
 231                         all_opers.erase(a);
 232                         return;
 233                 }
 234         }
 235 }
 236
 237 long GetRevision()
 238 {
 239         char Revision[] = "$Revision$";
 240         char *s1 = Revision;
 241         char *savept;
 242         char *v2 = strtok_r(s1," ",&savept);
 243         s1 = savept;
 244         v2 = strtok_r(s1," ",&savept);
 245         s1 = savept;
 246         return (long)(atof(v2)*10000);
 247 }
 248
 249
 250 std::string getservername()
 251 {
 252         return ServerName;
 253 }
 254
 255 std::string getserverdesc()
 256 {
 257         return ServerDesc;
 258 }
 259
 260 std::string getnetworkname()
 261 {
 262         return Network;
 263 }
 264
 265 std::string getadminname()
 266 {
 267         return AdminName;
 268 }
 269
 270 std::string getadminemail()
 271 {
 272         return AdminEmail;
 273 }
 274
 275 std::string getadminnick()
 276 {
 277         return AdminNick;
 278 }
 279
 280 void log(int level,char *text, ...)
 281 {
 282         char textbuffer[MAXBUF];
 283         va_list argsPtr;
 284         time_t rawtime;
 285         struct tm * timeinfo;
 286         if (level < LogLevel)
 287                 return;
 288
 289         time(&rawtime);
 290         timeinfo = localtime (&rawtime);
 291
 292         if (log_file)
 293         {
 294                 char b[MAXBUF];
 295                 va_start (argsPtr, text);
 296                 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 297                 va_end(argsPtr);
 298                 strlcpy(b,asctime(timeinfo),MAXBUF);
 299                 b[24] = ':';    // we know this is the end of the time string
 300                 fprintf(log_file,"%s %s\n",b,textbuffer);
 301                 if (nofork)
 302                 {
 303                         // nofork enabled? display it on terminal too
 304                         printf("%s %s\n",b,textbuffer);
 305                 }
 306         }
 307 }
 308
 309 void readfile(file_cache &F, const char* fname)
 310 {
 311         FILE* file;
 312         char linebuf[MAXBUF];
 313
 314         log(DEBUG,"readfile: loading %s",fname);
 315         F.clear();
 316         file =  fopen(fname,"r");
 317         if (file)
 318         {
 319                 while (!feof(file))
 320                 {
 321                         fgets(linebuf,sizeof(linebuf),file);
 322                         linebuf[strlen(linebuf)-1]='\0';
 323                         if (linebuf[0] == 0)
 324                         {
 325                                 strcpy(linebuf,"  ");
 326                         }
 327                         if (!feof(file))
 328                         {
 329                                 F.push_back(linebuf);
 330                         }
 331                 }
 332                 fclose(file);
 333         }
 334         else
 335         {
 336                 log(DEBUG,"readfile: failed to load file: %s",fname);
 337         }
 338         log(DEBUG,"readfile: loaded %s, %lu lines",fname,(unsigned long)F.size());
 339 }
 340
 341 void ReadConfig(bool bail, userrec* user)
 342 {
 343         char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF],MW[MAXBUF];
 344         char AH[MAXBUF],AP[MAXBUF],AF[MAXBUF],DNT[MAXBUF],pfreq[MAXBUF];
 345         ConnectClass c;
 346         std::stringstream errstr;
 347
 348         if (!LoadConf(CONFIG_FILE,&config_f,&errstr))
 349         {
 350                 errstr.seekg(0);
 351                 if (bail)
 352                 {
 353                         printf("There were errors in your configuration:\n%s",errstr.str().c_str());
 354                         Exit(0);
 355                 }
 356                 else
 357                 {
 358                         char dataline[1024];
 359                         if (user)
 360                         {
 361                                 WriteServ(user->fd,"NOTICE %s :There were errors in the configuration file:",user->nick);
 362                                 while (!errstr.eof())
 363                                 {
 364                                         errstr.getline(dataline,1024);
 365                                         WriteServ(user->fd,"NOTICE %s :%s",user->nick,dataline);
 366                                 }
 367                         }
 368                         else
 369                         {
 370                                 WriteOpers("There were errors in the configuration file:",user->nick);
 371                                 while (!errstr.eof())
 372                                 {
 373                                         errstr.getline(dataline,1024);
 374                                         WriteOpers(dataline);
 375                                 }
 376                         }
 377                         return;
 378                 }
 379         }
 380
 381         ConfValue("server","name",0,ServerName,&config_f);
 382         ConfValue("server","description",0,ServerDesc,&config_f);
 383         ConfValue("server","network",0,Network,&config_f);
 384         ConfValue("admin","name",0,AdminName,&config_f);
 385         ConfValue("admin","email",0,AdminEmail,&config_f);
 386         ConfValue("admin","nick",0,AdminNick,&config_f);
 387         ConfValue("files","motd",0,motd,&config_f);
 388         ConfValue("files","rules",0,rules,&config_f);
 389         ConfValue("power","diepass",0,diepass,&config_f);
 390         ConfValue("power","pause",0,pauseval,&config_f);
 391         ConfValue("power","restartpass",0,restartpass,&config_f);
 392         ConfValue("options","prefixquit",0,PrefixQuit,&config_f);
 393         ConfValue("die","value",0,DieValue,&config_f);
 394         ConfValue("options","loglevel",0,dbg,&config_f);
 395         ConfValue("options","netbuffersize",0,NB,&config_f);
 396         ConfValue("options","maxwho",0,MW,&config_f);
 397         ConfValue("options","allowhalfop",0,AH,&config_f);
 398         ConfValue("options","allowprotect",0,AP,&config_f);
 399         ConfValue("options","allowfounder",0,AF,&config_f);
 400         ConfValue("dns","server",0,DNSServer,&config_f);
 401         ConfValue("dns","timeout",0,DNT,&config_f);
 402         ConfValue("options","moduledir",0,ModPath,&config_f);
 403         ConfValue("disabled","commands",0,DisabledCommands,&config_f);
 404
 405         NetBufferSize = atoi(NB);
 406         MaxWhoResults = atoi(MW);
 407         dns_timeout = atoi(DNT);
 408         if (!dns_timeout)
 409                 dns_timeout = 5;
 410         if (!DNSServer[0])
 411                 strlcpy(DNSServer,"127.0.0.1",MAXBUF);
 412         if (!ModPath[0])
 413                 strlcpy(ModPath,MOD_PATH,MAXBUF);
 414         AllowHalfop = ((!strcasecmp(AH,"true")) || (!strcasecmp(AH,"1")) || (!strcasecmp(AH,"yes")));
 415         AllowProtect = ((!strcasecmp(AP,"true")) || (!strcasecmp(AP,"1")) || (!strcasecmp(AP,"yes")));
 416         AllowFounder = ((!strcasecmp(AF,"true")) || (!strcasecmp(AF,"1")) || (!strcasecmp(AF,"yes")));
 417         if ((!NetBufferSize) || (NetBufferSize > 65535) || (NetBufferSize < 1024))
 418         {
 419                 log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
 420                 NetBufferSize = 10240;
 421         }
 422         if ((!MaxWhoResults) || (MaxWhoResults > 65535) || (MaxWhoResults < 1))
 423         {
 424                 log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128.");
 425                 MaxWhoResults = 128;
 426         }
 427         if (!strcmp(dbg,"debug"))
 428                 LogLevel = DEBUG;
 429         if (!strcmp(dbg,"verbose"))
 430                 LogLevel = VERBOSE;
 431         if (!strcmp(dbg,"default"))
 432                 LogLevel = DEFAULT;
 433         if (!strcmp(dbg,"sparse"))
 434                 LogLevel = SPARSE;
 435         if (!strcmp(dbg,"none"))
 436                 LogLevel = NONE;
 437         readfile(MOTD,motd);
 438         log(DEFAULT,"Reading message of the day...");
 439         readfile(RULES,rules);
 440         log(DEFAULT,"Reading connect classes...");
 441         Classes.clear();
 442         for (int i = 0; i < ConfValueEnum("connect",&config_f); i++)
 443         {
 444                 strcpy(Value,"");
 445                 ConfValue("connect","allow",i,Value,&config_f);
 446                 ConfValue("connect","timeout",i,timeout,&config_f);
 447                 ConfValue("connect","flood",i,flood,&config_f);
 448                 ConfValue("connect","pingfreq",i,pfreq,&config_f);
 449                 if (Value[0])
 450                 {
 451                         strlcpy(c.host,Value,MAXBUF);
 452                         c.type = CC_ALLOW;
 453                         strlcpy(Value,"",MAXBUF);
 454                         ConfValue("connect","password",i,Value,&config_f);
 455                         strlcpy(c.pass,Value,MAXBUF);
 456                         c.registration_timeout = 90; // default is 2 minutes
 457                         c.pingtime = 120;
 458                         c.flood = atoi(flood);
 459                         if (atoi(timeout)>0)
 460                         {
 461                                 c.registration_timeout = atoi(timeout);
 462                         }
 463                         if (atoi(pfreq)>0)
 464                         {
 465                                 c.pingtime = atoi(pfreq);
 466                         }
 467                         Classes.push_back(c);
 468                         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);
 469                 }
 470                 else
 471                 {
 472                         ConfValue("connect","deny",i,Value,&config_f);
 473                         strlcpy(c.host,Value,MAXBUF);
 474                         c.type = CC_DENY;
 475                         Classes.push_back(c);
 476                         log(DEBUG,"Read connect class type DENY, host=%s",c.host);
 477                 }
 478
 479         }
 480         log(DEFAULT,"Reading K lines,Q lines and Z lines from config...");
 481         read_xline_defaults();
 482         log(DEFAULT,"Applying K lines, Q lines and Z lines...");
 483         apply_lines();
 484         log(DEFAULT,"Done reading configuration file, InspIRCd is now starting.");
 485         if (!bail)
 486         {
 487                 log(DEFAULT,"Adding and removing modules due to rehash...");
 488
 489                 std::vector<std::string> old_module_names, new_module_names, added_modules, removed_modules;
 490
 491                 // store the old module names
 492                 for (std::vector<std::string>::iterator t = module_names.begin(); t != module_names.end(); t++)
 493                 {
 494                         old_module_names.push_back(*t);
 495                 }
 496
 497                 // get the new module names
 498                 for (int count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
 499                 {
 500                         ConfValue("module","name",count2,Value,&config_f);
 501                         new_module_names.push_back(Value);
 502                 }
 503
 504                 // now create a list of new modules that are due to be loaded
 505                 // and a seperate list of modules which are due to be unloaded
 506                 for (std::vector<std::string>::iterator _new = new_module_names.begin(); _new != new_module_names.end(); _new++)
 507                 {
 508                         bool added = true;
 509                         for (std::vector<std::string>::iterator old = old_module_names.begin(); old != old_module_names.end(); old++)
 510                         {
 511                                 if (*old == *_new)
 512                                         added = false;
 513                         }
 514                         if (added)
 515                                 added_modules.push_back(*_new);
 516                 }
 517                 for (std::vector<std::string>::iterator oldm = old_module_names.begin(); oldm != old_module_names.end(); oldm++)
 518                 {
 519                         bool removed = true;
 520                         for (std::vector<std::string>::iterator newm = new_module_names.begin(); newm != new_module_names.end(); newm++)
 521                         {
 522                                 if (*newm == *oldm)
 523                                         removed = false;
 524                         }
 525                         if (removed)
 526                                 removed_modules.push_back(*oldm);
 527                 }
 528                 // now we have added_modules, a vector of modules to be loaded, and removed_modules, a vector of modules
 529                 // to be removed.
 530                 int rem = 0, add = 0;
 531                 if (!removed_modules.empty())
 532                 for (std::vector<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 533                 {
 534                         if (UnloadModule(removing->c_str()))
 535                         {
 536                                 WriteOpers("*** REHASH UNLOADED MODULE: %s",removing->c_str());
 537                                 WriteServ(user->fd,"973 %s %s :Module %s successfully unloaded.",user->nick, removing->c_str(), removing->c_str());
 538                                 rem++;
 539                         }
 540                         else
 541                         {
 542                                 WriteServ(user->fd,"972 %s %s :Failed to unload module %s: %s",user->nick, removing->c_str(), removing->c_str(), ModuleError());
 543                         }
 544                 }
 545                 if (!added_modules.empty())
 546                 for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 547                 {
 548                         if (LoadModule(adding->c_str()))
 549                         {
 550                                 WriteOpers("*** REHASH LOADED MODULE: %s",adding->c_str());
 551                                 WriteServ(user->fd,"975 %s %s :Module %s successfully loaded.",user->nick, adding->c_str(), adding->c_str());
 552                                 add++;
 553                         }
 554                         else
 555                         {
 556                                 WriteServ(user->fd,"974 %s %s :Failed to load module %s: %s",user->nick, adding->c_str(), adding->c_str(), ModuleError());
 557                         }
 558                 }
 559                 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());
 560         }
 561 }
 562
 563 /* write formatted text to a socket, in same format as printf */
 564
 565 void Write(int sock,char *text, ...)
 566 {
 567         if (sock == FD_MAGIC_NUMBER)
 568                 return;
 569         if (!text)
 570         {
 571                 log(DEFAULT,"*** BUG *** Write was given an invalid parameter");
 572                 return;
 573         }
 574         char textbuffer[MAXBUF];
 575         va_list argsPtr;
 576         char tb[MAXBUF];
 577
 578         va_start (argsPtr, text);
 579         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 580         va_end(argsPtr);
 581         int bytes = snprintf(tb,MAXBUF,"%s\r\n",textbuffer);
 582         chop(tb);
 583         if (sock != -1)
 584         {
 585                 write(sock,tb,bytes > 514 ? 514 : bytes);
 586         }
 587 }
 588
 589 /* write a server formatted numeric response to a single socket */
 590
 591 void WriteServ(int sock, char* text, ...)
 592 {
 593         if (sock == FD_MAGIC_NUMBER)
 594                 return;
 595         if (!text)
 596         {
 597                 log(DEFAULT,"*** BUG *** WriteServ was given an invalid parameter");
 598                 return;
 599         }
 600         char textbuffer[MAXBUF],tb[MAXBUF];
 601         va_list argsPtr;
 602         va_start (argsPtr, text);
 603
 604         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 605         va_end(argsPtr);
 606         int bytes = snprintf(tb,MAXBUF,":%s %s\r\n",ServerName,textbuffer);
 607         chop(tb);
 608         if (sock != -1)
 609         {
 610                 write(sock,tb,bytes > 514 ? 514 : bytes);
 611         }
 612 }
 613
 614 /* write text from an originating user to originating user */
 615
 616 void WriteFrom(int sock, userrec *user,char* text, ...)
 617 {
 618         if (sock == FD_MAGIC_NUMBER)
 619                 return;
 620         if ((!text) || (!user))
 621         {
 622                 log(DEFAULT,"*** BUG *** WriteFrom was given an invalid parameter");
 623                 return;
 624         }
 625         char textbuffer[MAXBUF],tb[MAXBUF];
 626         va_list argsPtr;
 627         va_start (argsPtr, text);
 628
 629         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 630         va_end(argsPtr);
 631         int bytes = snprintf(tb,MAXBUF,":%s!%s@%s %s\r\n",user->nick,user->ident,user->dhost,textbuffer);
 632         chop(tb);
 633         if (sock != -1)
 634         {
 635                 log(DEBUG,"DATAOUT: %s",tb);
 636                 write(sock,tb,bytes > 514 ? 514 : bytes);
 637         }
 638 }
 639
 640 /* write text to an destination user from a source user (e.g. user privmsg) */
 641
 642 void WriteTo(userrec *source, userrec *dest,char *data, ...)
 643 {
 644         if ((!dest) || (!data))
 645         {
 646                 log(DEFAULT,"*** BUG *** WriteTo was given an invalid parameter");
 647                 return;
 648         }
 649         if (dest->fd == FD_MAGIC_NUMBER)
 650                 return;
 651         char textbuffer[MAXBUF],tb[MAXBUF];
 652         va_list argsPtr;
 653         va_start (argsPtr, data);
 654         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
 655         va_end(argsPtr);
 656         chop(tb);
 657
 658         // if no source given send it from the server.
 659         if (!source)
 660         {
 661                 WriteServ(dest->fd,":%s %s",ServerName,textbuffer);
 662         }
 663         else
 664         {
 665                 WriteFrom(dest->fd,source,"%s",textbuffer);
 666         }
 667 }
 668
 669 /* write formatted text from a source user to all users on a channel
 670  * including the sender (NOT for privmsg, notice etc!) */
 671
 672 void WriteChannel(chanrec* Ptr, userrec* user, char* text, ...)
 673 {
 674         if ((!Ptr) || (!user) || (!text))
 675         {
 676                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 677                 return;
 678         }
 679         char textbuffer[MAXBUF];
 680         va_list argsPtr;
 681         va_start (argsPtr, text);
 682         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 683         va_end(argsPtr);
 684
 685         std::vector<char*> *ulist = Ptr->GetUsers();
 686         for (int j = 0; j < ulist->size(); j++)
 687         {
 688                 char* o = (*ulist)[j];
 689                 userrec* otheruser = (userrec*)o;
 690                 if (otheruser->fd != FD_MAGIC_NUMBER)
 691                         WriteTo(user,otheruser,"%s",textbuffer);
 692         }
 693 }
 694
 695 /* write formatted text from a source user to all users on a channel
 696  * including the sender (NOT for privmsg, notice etc!) doesnt send to
 697  * users on remote servers */
 698
 699 void WriteChannelLocal(chanrec* Ptr, userrec* user, char* text, ...)
 700 {
 701         if ((!Ptr) || (!text))
 702         {
 703                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 704                 return;
 705         }
 706         char textbuffer[MAXBUF];
 707         va_list argsPtr;
 708         va_start (argsPtr, text);
 709         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 710         va_end(argsPtr);
 711
 712         std::vector<char*> *ulist = Ptr->GetUsers();
 713         for (int j = 0; j < ulist->size(); j++)
 714         {
 715                 char* o = (*ulist)[j];
 716                 userrec* otheruser = (userrec*)o;
 717                 if ((otheruser->fd != FD_MAGIC_NUMBER) && (otheruser->fd != -1) && (otheruser != user))
 718                 {
 719                         if (!user)
 720                         {
 721                                 WriteServ(otheruser->fd,"%s",textbuffer);
 722                         }
 723                         else
 724                         {
 725                                 WriteTo(user,otheruser,"%s",textbuffer);
 726                         }
 727                 }
 728         }
 729 }
 730
 731
 732 void WriteChannelWithServ(char* ServName, chanrec* Ptr, char* text, ...)
 733 {
 734         if ((!Ptr) || (!text))
 735         {
 736                 log(DEFAULT,"*** BUG *** WriteChannelWithServ was given an invalid parameter");
 737                 return;
 738         }
 739         char textbuffer[MAXBUF];
 740         va_list argsPtr;
 741         va_start (argsPtr, text);
 742         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 743         va_end(argsPtr);
 744
 745
 746         std::vector<char*> *ulist = Ptr->GetUsers();
 747         for (int j = 0; j < ulist->size(); j++)
 748         {
 749                 char* o = (*ulist)[j];
 750                 userrec* otheruser = (userrec*)o;
 751                 if (otheruser->fd != FD_MAGIC_NUMBER)
 752                         WriteServ(otheruser->fd,"%s",textbuffer);
 753         }
 754 }
 755
 756
 757 /* write formatted text from a source user to all users on a channel except
 758  * for the sender (for privmsg etc) */
 759
 760 void ChanExceptSender(chanrec* Ptr, userrec* user, char* text, ...)
 761 {
 762         if ((!Ptr) || (!user) || (!text))
 763         {
 764                 log(DEFAULT,"*** BUG *** ChanExceptSender was given an invalid parameter");
 765                 return;
 766         }
 767         char textbuffer[MAXBUF];
 768         va_list argsPtr;
 769         va_start (argsPtr, text);
 770         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 771         va_end(argsPtr);
 772
 773         std::vector<char*> *ulist = Ptr->GetUsers();
 774         for (int j = 0; j < ulist->size(); j++)
 775         {
 776                 char* o = (*ulist)[j];
 777                 userrec* otheruser = (userrec*)o;
 778                 if ((otheruser->fd != FD_MAGIC_NUMBER) && (user != otheruser))
 779                         WriteFrom(otheruser->fd,user,"%s",textbuffer);
 780         }
 781 }
 782
 783
 784 std::string GetServerDescription(char* servername)
 785 {
 786         for (int j = 0; j < 32; j++)
 787         {
 788                 if (me[j] != NULL)
 789                 {
 790                         for (int k = 0; k < me[j]->connectors.size(); k++)
 791                         {
 792                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),servername))
 793                                 {
 794                                         return me[j]->connectors[k].GetDescription();
 795                                 }
 796                         }
 797                 }
 798                 return ServerDesc; // not a remote server that can be found, it must be me.
 799         }
 800 }
 801
 802
 803 /* write a formatted string to all users who share at least one common
 804  * channel, including the source user e.g. for use in NICK */
 805
 806 void WriteCommon(userrec *u, char* text, ...)
 807 {
 808         if (!u)
 809         {
 810                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 811                 return;
 812         }
 813
 814         if (u->registered != 7) {
 815                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 816                 return;
 817         }
 818
 819         char textbuffer[MAXBUF];
 820         va_list argsPtr;
 821         va_start (argsPtr, text);
 822         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 823         va_end(argsPtr);
 824
 825         WriteFrom(u->fd,u,"%s",textbuffer);
 826
 827         for (int i = 0; i < MAXCHANS; i++)
 828         {
 829                 if (u->chans[i].channel)
 830                 {
 831                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 832                         for (int j = 0; j < ulist->size(); j++)
 833                         {
 834                                 char* o = (*ulist)[j];
 835                                 userrec* otheruser = (userrec*)o;
 836                                 WriteFrom(otheruser->fd,u,"%s",textbuffer);
 837                         }
 838                 }
 839         }
 840 }
 841
 842 /* write a formatted string to all users who share at least one common
 843  * channel, NOT including the source user e.g. for use in QUIT */
 844
 845 void WriteCommonExcept(userrec *u, char* text, ...)
 846 {
 847         if (!u)
 848         {
 849                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 850                 return;
 851         }
 852
 853         if (u->registered != 7) {
 854                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 855                 return;
 856         }
 857
 858         char textbuffer[MAXBUF];
 859         va_list argsPtr;
 860         va_start (argsPtr, text);
 861         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 862         va_end(argsPtr);
 863
 864         for (int i = 0; i < MAXCHANS; i++)
 865         {
 866                 if (u->chans[i].channel)
 867                 {
 868                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 869                         for (int j = 0; j < ulist->size(); j++)
 870                         {
 871                                 char* o = (*ulist)[j];
 872                                 userrec* otheruser = (userrec*)o;
 873                                 if (u != otheruser)
 874                                         WriteFrom(otheruser->fd,u,"%s",textbuffer);
 875                         }
 876                 }
 877         }
 878 }
 879
 880 void WriteOpers(char* text, ...)
 881 {
 882         if (!text)
 883         {
 884                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 885                 return;
 886         }
 887
 888         char textbuffer[MAXBUF];
 889         va_list argsPtr;
 890         va_start (argsPtr, text);
 891         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 892         va_end(argsPtr);
 893
 894         for (std::vector<userrec*>::iterator i = all_opers.begin(); i != all_opers.end(); i++)
 895         {
 896                 userrec* a = *i;
 897                 if ((a) && (a->fd != FD_MAGIC_NUMBER))
 898                 {
 899                         if (strchr(a->modes,'s'))
 900                         {
 901                                 // send server notices to all with +s
 902                                 WriteServ(a->fd,"NOTICE %s :%s",a->nick,textbuffer);
 903                         }
 904                 }
 905         }
 906 }
 907
 908 // returns TRUE of any users on channel C occupy server 'servername'.
 909
 910 bool ChanAnyOnThisServer(chanrec *c,char* servername)
 911 {
 912         log(DEBUG,"ChanAnyOnThisServer");
 913
 914         std::vector<char*> *ulist = c->GetUsers();
 915         for (int j = 0; j < ulist->size(); j++)
 916         {
 917                 char* o = (*ulist)[j];
 918                 userrec* user = (userrec*)o;
 919                 if (!strcasecmp(user->server,servername))
 920                         return true;
 921         }
 922         return false;
 923 }
 924
 925 // returns true if user 'u' shares any common channels with any users on server 'servername'
 926
 927 bool CommonOnThisServer(userrec* u,const char* servername)
 928 {
 929         log(DEBUG,"ChanAnyOnThisServer");
 930
 931         for (int i = 0; i < MAXCHANS; i++)
 932         {
 933                 if (u->chans[i].channel)
 934                 {
 935                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 936                         for (int j = 0; j < ulist->size(); j++)
 937                         {
 938                                 char* o = (*ulist)[j];
 939                                 userrec* user = (userrec*)o;
 940                                 if (!strcasecmp(user->server,servername))
 941                                         return true;
 942                         }
 943                 }
 944         }
 945         return false;
 946 }
 947
 948
 949 void NetSendToCommon(userrec* u, char* s)
 950 {
 951         char buffer[MAXBUF];
 952         snprintf(buffer,MAXBUF,"%s",s);
 953
 954         log(DEBUG,"NetSendToCommon: '%s' '%s'",u->nick,s);
 955
 956         std::string msg = buffer;
 957         FOREACH_MOD OnPacketTransmit(msg,s);
 958         strlcpy(buffer,msg.c_str(),MAXBUF);
 959
 960         for (int j = 0; j < 32; j++)
 961         {
 962                 if (me[j] != NULL)
 963                 {
 964                         for (int k = 0; k < me[j]->connectors.size(); k++)
 965                         {
 966                                 if (CommonOnThisServer(u,me[j]->connectors[k].GetServerName().c_str()))
 967                                 {
 968                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 969                                 }
 970                         }
 971                 }
 972         }
 973 }
 974
 975
 976 void NetSendToAll(char* s)
 977 {
 978         char buffer[MAXBUF];
 979         snprintf(buffer,MAXBUF,"%s",s);
 980
 981         log(DEBUG,"NetSendToAll: '%s'",s);
 982
 983         std::string msg = buffer;
 984         FOREACH_MOD OnPacketTransmit(msg,s);
 985         strlcpy(buffer,msg.c_str(),MAXBUF);
 986
 987         for (int j = 0; j < 32; j++)
 988         {
 989                 if (me[j] != NULL)
 990                 {
 991                         for (int k = 0; k < me[j]->connectors.size(); k++)
 992                         {
 993                                 me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 994                         }
 995                 }
 996         }
 997 }
 998
 999 void NetSendToAllAlive(char* s)
1000 {
1001         char buffer[MAXBUF];
1002         snprintf(buffer,MAXBUF,"%s",s);
1003
1004         log(DEBUG,"NetSendToAllAlive: '%s'",s);
1005
1006         std::string msg = buffer;
1007         FOREACH_MOD OnPacketTransmit(msg,s);
1008         strlcpy(buffer,msg.c_str(),MAXBUF);
1009
1010         for (int j = 0; j < 32; j++)
1011         {
1012                 if (me[j] != NULL)
1013                 {
1014                         for (int k = 0; k < me[j]->connectors.size(); k++)
1015                         {
1016                                 if (me[j]->connectors[k].GetState() != STATE_DISCONNECTED)
1017                                 {
1018                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1019                                 }
1020                                 else
1021                                 {
1022                                         log(DEBUG,"%s is dead, not sending to it.",me[j]->connectors[k].GetServerName().c_str());
1023                                 }
1024                         }
1025                 }
1026         }
1027 }
1028
1029
1030 void NetSendToOne(char* target,char* s)
1031 {
1032         char buffer[MAXBUF];
1033         snprintf(buffer,MAXBUF,"%s",s);
1034
1035         log(DEBUG,"NetSendToOne: '%s' '%s'",target,s);
1036
1037         std::string msg = buffer;
1038         FOREACH_MOD OnPacketTransmit(msg,s);
1039         strlcpy(buffer,msg.c_str(),MAXBUF);
1040
1041         for (int j = 0; j < 32; j++)
1042         {
1043                 if (me[j] != NULL)
1044                 {
1045                         for (int k = 0; k < me[j]->connectors.size(); k++)
1046                         {
1047                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1048                                 {
1049                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1050                                 }
1051                         }
1052                 }
1053         }
1054 }
1055
1056 void NetSendToAllExcept(const char* target,char* s)
1057 {
1058         char buffer[MAXBUF];
1059         snprintf(buffer,MAXBUF,"%s",s);
1060
1061         log(DEBUG,"NetSendToAllExcept: '%s' '%s'",target,s);
1062
1063         std::string msg = buffer;
1064         FOREACH_MOD OnPacketTransmit(msg,s);
1065         strlcpy(buffer,msg.c_str(),MAXBUF);
1066
1067         for (int j = 0; j < 32; j++)
1068         {
1069                 if (me[j] != NULL)
1070                 {
1071                         for (int k = 0; k < me[j]->connectors.size(); k++)
1072                         {
1073                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1074                                 {
1075                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1076                                 }
1077                         }
1078                 }
1079         }
1080 }
1081
1082
1083 void WriteMode(const char* modes, int flags, const char* text, ...)
1084 {
1085         if ((!text) || (!modes) || (!flags))
1086         {
1087                 log(DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
1088                 return;
1089         }
1090
1091         char textbuffer[MAXBUF];
1092         va_list argsPtr;
1093         va_start (argsPtr, text);
1094         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1095         va_end(argsPtr);
1096         int modelen = strlen(modes);
1097
1098         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1099         {
1100                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1101                 {
1102                         bool send_to_user = false;
1103
1104                         if (flags == WM_AND)
1105                         {
1106                                 send_to_user = true;
1107                                 for (int n = 0; n < modelen; n++)
1108                                 {
1109                                         if (!hasumode(i->second,modes[n]))
1110                                         {
1111                                                 send_to_user = false;
1112                                                 break;
1113                                         }
1114                                 }
1115                         }
1116                         else if (flags == WM_OR)
1117                         {
1118                                 send_to_user = false;
1119                                 for (int n = 0; n < modelen; n++)
1120                                 {
1121                                         if (hasumode(i->second,modes[n]))
1122                                         {
1123                                                 send_to_user = true;
1124                                                 break;
1125                                         }
1126                                 }
1127                         }
1128
1129                         if (send_to_user)
1130                         {
1131                                 WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
1132                         }
1133                 }
1134         }
1135 }
1136
1137
1138 void WriteWallOps(userrec *source, bool local_only, char* text, ...)
1139 {
1140         if ((!text) || (!source))
1141         {
1142                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
1143                 return;
1144         }
1145
1146         char textbuffer[MAXBUF];
1147         va_list argsPtr;
1148         va_start (argsPtr, text);
1149         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1150         va_end(argsPtr);
1151
1152         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1153         {
1154                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1155                 {
1156                         if (strchr(i->second->modes,'w'))
1157                         {
1158                                 WriteTo(source,i->second,"WALLOPS :%s",textbuffer);
1159                         }
1160                 }
1161         }
1162
1163         if (!local_only)
1164         {
1165                 char buffer[MAXBUF];
1166                 snprintf(buffer,MAXBUF,"@ %s :%s",source->nick,textbuffer);
1167                 NetSendToAll(buffer);
1168         }
1169 }
1170
1171 /* convert a string to lowercase. Note following special circumstances
1172  * taken from RFC 1459. Many "official" server branches still hold to this
1173  * rule so i will too;
1174  *
1175  *  Because of IRC's scandanavian origin, the characters {}| are
1176  *  considered to be the lower case equivalents of the characters []\,
1177  *  respectively. This is a critical issue when determining the
1178  *  equivalence of two nicknames.
1179  */
1180
1181 void strlower(char *n)
1182 {
1183         if (!n)
1184         {
1185                 return;
1186         }
1187         for (int i = 0; n[i] != 0; i++)
1188         {
1189                 n[i] = tolower(n[i]);
1190                 if (n[i] == '[')
1191                         n[i] = '{';
1192                 if (n[i] == ']')
1193                         n[i] = '}';
1194                 if (n[i] == '\\')
1195                         n[i] = '|';
1196         }
1197 }
1198
1199
1200
1201 /* Find a user record by nickname and return a pointer to it */
1202
1203 userrec* Find(std::string nick)
1204 {
1205         user_hash::iterator iter = clientlist.find(nick);
1206
1207         if (iter == clientlist.end())
1208                 /* Couldn't find it */
1209                 return NULL;
1210
1211         return iter->second;
1212 }
1213
1214 /* find a channel record by channel name and return a pointer to it */
1215
1216 chanrec* FindChan(const char* chan)
1217 {
1218         if (!chan)
1219         {
1220                 log(DEFAULT,"*** BUG *** Findchan was given an invalid parameter");
1221                 return NULL;
1222         }
1223
1224         chan_hash::iterator iter = chanlist.find(chan);
1225
1226         if (iter == chanlist.end())
1227                 /* Couldn't find it */
1228                 return NULL;
1229
1230         return iter->second;
1231 }
1232
1233
1234 long GetMaxBans(char* name)
1235 {
1236         char CM[MAXBUF];
1237         for (int count = 0; count < ConfValueEnum("banlist",&config_f); count++)
1238         {
1239                 ConfValue("banlist","chan",count,CM,&config_f);
1240                 if (match(name,CM))
1241                 {
1242                         ConfValue("banlist","limit",count,CM,&config_f);
1243                         return atoi(CM);
1244                 }
1245         }
1246         return 64;
1247 }
1248
1249
1250 void purge_empty_chans(userrec* u)
1251 {
1252
1253         int go_again = 1, purge = 0;
1254
1255         // firstly decrement the count on each channel
1256         for (int f = 0; f < MAXCHANS; f++)
1257         {
1258                 if (u->chans[f].channel)
1259                 {
1260                         u->chans[f].channel->DecUserCounter();
1261                         u->chans[f].channel->DelUser((char*)u);
1262                 }
1263         }
1264
1265         for (int i = 0; i < MAXCHANS; i++)
1266         {
1267                 if (u->chans[i].channel)
1268                 {
1269                         if (!usercount(u->chans[i].channel))
1270                         {
1271                                 chan_hash::iterator i2 = chanlist.find(u->chans[i].channel->name);
1272                                 /* kill the record */
1273                                 if (i2 != chanlist.end())
1274                                 {
1275                                         log(DEBUG,"del_channel: destroyed: %s",i2->second->name);
1276                                         if (i2->second)
1277                                                 delete i2->second;
1278                                         chanlist.erase(i2);
1279                                         go_again = 1;
1280                                         purge++;
1281                                         u->chans[i].channel = NULL;
1282                                 }
1283                         }
1284                         else
1285                         {
1286                                 log(DEBUG,"skipped purge for %s",u->chans[i].channel->name);
1287                         }
1288                 }
1289         }
1290         log(DEBUG,"completed channel purge, killed %lu",(unsigned long)purge);
1291
1292         DeleteOper(u);
1293 }
1294
1295
1296 char scratch[MAXBUF];
1297 char sparam[MAXBUF];
1298
1299 char* chanmodes(chanrec *chan)
1300 {
1301         if (!chan)
1302         {
1303                 log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
1304                 strcpy(scratch,"");
1305                 return scratch;
1306         }
1307
1308         strcpy(scratch,"");
1309         strcpy(sparam,"");
1310         if (chan->noexternal)
1311         {
1312                 strlcat(scratch,"n",MAXMODES);
1313         }
1314         if (chan->topiclock)
1315         {
1316                 strlcat(scratch,"t",MAXMODES);
1317         }
1318         if (chan->key[0])
1319         {
1320                 strlcat(scratch,"k",MAXMODES);
1321         }
1322         if (chan->limit)
1323         {
1324                 strlcat(scratch,"l",MAXMODES);
1325         }
1326         if (chan->inviteonly)
1327         {
1328                 strlcat(scratch,"i",MAXMODES);
1329         }
1330         if (chan->moderated)
1331         {
1332                 strlcat(scratch,"m",MAXMODES);
1333         }
1334         if (chan->secret)
1335         {
1336                 strlcat(scratch,"s",MAXMODES);
1337         }
1338         if (chan->c_private)
1339         {
1340                 strlcat(scratch,"p",MAXMODES);
1341         }
1342         if (chan->key[0])
1343         {
1344                 strlcat(sparam," ",MAXBUF);
1345                 strlcat(sparam,chan->key,MAXBUF);
1346         }
1347         if (chan->limit)
1348         {
1349                 char foo[24];
1350                 sprintf(foo," %lu",(unsigned long)chan->limit);
1351                 strlcat(sparam,foo,MAXBUF);
1352         }
1353         if (*chan->custom_modes)
1354         {
1355                 strlcat(scratch,chan->custom_modes,MAXMODES);
1356                 for (int z = 0; chan->custom_modes[z] != 0; z++)
1357                 {
1358                         std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
1359                         if (extparam != "")
1360                         {
1361                                 strlcat(sparam," ",MAXBUF);
1362                                 strlcat(sparam,extparam.c_str(),MAXBUF);
1363                         }
1364                 }
1365         }
1366         log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam);
1367         strlcat(scratch,sparam,MAXMODES);
1368         return scratch;
1369 }
1370
1371
1372 /* compile a userlist of a channel into a string, each nick seperated by
1373  * spaces and op, voice etc status shown as @ and + */
1374
1375 void userlist(userrec *user,chanrec *c)
1376 {
1377         if ((!c) || (!user))
1378         {
1379                 log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
1380                 return;
1381         }
1382
1383         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1384         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1385         {
1386                 if (has_channel(i->second,c))
1387                 {
1388                         if (isnick(i->second->nick))
1389                         {
1390                                 if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1391                                 {
1392                                         /* user is +i, and source not on the channel, does not show
1393                                          * nick in NAMES list */
1394                                         continue;
1395                                 }
1396                                 strlcat(list,cmode(i->second,c),MAXBUF);
1397                                 strlcat(list,i->second->nick,MAXBUF);
1398                                 strlcat(list," ",MAXBUF);
1399                                 if (strlen(list)>(480-NICKMAX))
1400                                 {
1401                                         /* list overflowed into
1402                                          * multiple numerics */
1403                                         WriteServ(user->fd,"%s",list);
1404                                         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1405                                 }
1406                         }
1407                 }
1408         }
1409         /* if whats left in the list isnt empty, send it */     if (list[strlen(list)-1] != ':')
1410         {
1411                 WriteServ(user->fd,"%s",list);
1412         }
1413 }
1414
1415 /* return a count of the users on a specific channel accounting for
1416  * invisible users who won't increase the count. e.g. for /LIST */
1417
1418 int usercount_i(chanrec *c)
1419 {
1420         int count = 0;
1421
1422         if (!c)
1423         {
1424                 log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
1425                 return 0;
1426         }
1427
1428         strcpy(list,"");
1429         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1430         {
1431                 if (i->second)
1432                 {
1433                         if (has_channel(i->second,c))
1434                         {
1435                                 if (isnick(i->second->nick))
1436                                 {
1437                                         if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1438                                         {
1439                                                 /* user is +i, and source not on the channel, does not show
1440                                                  * nick in NAMES list */
1441                                                 continue;
1442                                         }
1443                                         count++;
1444                                 }
1445                         }
1446                 }
1447         }
1448         log(DEBUG,"usercount_i: %s %lu",c->name,(unsigned long)count);
1449         return count;
1450 }
1451
1452
1453 int usercount(chanrec *c)
1454 {
1455         if (!c)
1456         {
1457                 log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
1458                 return 0;
1459         }
1460         int count = c->GetUserCounter();
1461         log(DEBUG,"usercount: %s %lu",c->name,(unsigned long)count);
1462         return count;
1463 }
1464
1465
1466 /* add a channel to a user, creating the record for it if needed and linking
1467  * it to the user record */
1468
1469 chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
1470 {
1471         if ((!user) || (!cn))
1472         {
1473                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
1474                 return 0;
1475         }
1476
1477         chanrec* Ptr;
1478         int created = 0;
1479         char cname[MAXBUF];
1480
1481         strncpy(cname,cn,MAXBUF);
1482
1483         // we MUST declare this wherever we use FOREACH_RESULT
1484         int MOD_RESULT = 0;
1485
1486         if (strlen(cname) > CHANMAX-1)
1487         {
1488                 cname[CHANMAX-1] = '\0';
1489         }
1490
1491         log(DEBUG,"add_channel: %s %s",user->nick,cname);
1492
1493         if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
1494         {
1495                 return NULL; // already on the channel!
1496         }
1497
1498
1499         if (!FindChan(cname))
1500         {
1501                 MOD_RESULT = 0;
1502                 FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
1503                 if (MOD_RESULT == 1) {
1504                         return NULL;
1505                 }
1506
1507                 /* create a new one */
1508                 log(DEBUG,"add_channel: creating: %s",cname);
1509                 {
1510                         chanlist[cname] = new chanrec();
1511
1512                         strlcpy(chanlist[cname]->name, cname,CHANMAX);
1513                         chanlist[cname]->topiclock = 1;
1514                         chanlist[cname]->noexternal = 1;
1515                         chanlist[cname]->created = TIME;
1516                         strcpy(chanlist[cname]->topic, "");
1517                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
1518                         chanlist[cname]->topicset = 0;
1519                         Ptr = chanlist[cname];
1520                         log(DEBUG,"add_channel: created: %s",cname);
1521                         /* set created to 2 to indicate user
1522                          * is the first in the channel
1523                          * and should be given ops */
1524                         created = 2;
1525                 }
1526         }
1527         else
1528         {
1529                 /* channel exists, just fish out a pointer to its struct */
1530                 Ptr = FindChan(cname);
1531                 if (Ptr)
1532                 {
1533                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
1534
1535                         // the override flag allows us to bypass channel modes
1536                         // and bans (used by servers)
1537                         if ((!override) || (!strcasecmp(user->server,ServerName)))
1538                         {
1539                                 log(DEBUG,"Not overriding...");
1540                                 MOD_RESULT = 0;
1541                                 FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
1542                                 if (MOD_RESULT == 1) {
1543                                         return NULL;
1544                                 }
1545                                 log(DEBUG,"MOD_RESULT=%d",MOD_RESULT);
1546
1547                                 if (!MOD_RESULT)
1548                                 {
1549                                         log(DEBUG,"add_channel: checking key, invite, etc");
1550                                         MOD_RESULT = 0;
1551                                         FOREACH_RESULT(OnCheckKey(user, Ptr, key ? key : ""));
1552                                         if (MOD_RESULT == 0)
1553                                         {
1554                                                 if (Ptr->key[0])
1555                                                 {
1556                                                         log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
1557                                                         if (!key)
1558                                                         {
1559                                                                 log(DEBUG,"add_channel: no key given in JOIN");
1560                                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
1561                                                                 return NULL;
1562                                                         }
1563                                                         else
1564                                                         {
1565                                                                 if (strcasecmp(key,Ptr->key))
1566                                                                 {
1567                                                                         log(DEBUG,"add_channel: bad key given in JOIN");
1568                                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
1569                                                                         return NULL;
1570                                                                 }
1571                                                         }
1572                                                 }
1573                                                 log(DEBUG,"add_channel: no key");
1574                                         }
1575                                         MOD_RESULT = 0;
1576                                         FOREACH_RESULT(OnCheckInvite(user, Ptr));
1577                                         if (MOD_RESULT == 0)
1578                                         {
1579                                                 if (Ptr->inviteonly)
1580                                                 {
1581                                                         log(DEBUG,"add_channel: channel is +i");
1582                                                         if (user->IsInvited(Ptr->name))
1583                                                         {
1584                                                                 /* user was invited to channel */
1585                                                                 /* there may be an optional channel NOTICE here */
1586                                                         }
1587                                                         else
1588                                                         {
1589                                                                 WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
1590                                                                 return NULL;
1591                                                         }
1592                                                 }
1593                                                 log(DEBUG,"add_channel: channel is not +i");
1594                                         }
1595                                         MOD_RESULT = 0;
1596                                         FOREACH_RESULT(OnCheckLimit(user, Ptr));
1597                                         if (MOD_RESULT == 0)
1598                                         {
1599                                                 if (Ptr->limit)
1600                                                 {
1601                                                         if (usercount(Ptr) >= Ptr->limit)
1602                                                         {
1603                                                                 WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
1604                                                                 return NULL;
1605                                                         }
1606                                                 }
1607                                         }
1608                                         log(DEBUG,"add_channel: about to walk banlist");
1609                                         MOD_RESULT = 0;
1610                                         FOREACH_RESULT(OnCheckBan(user, Ptr));
1611                                         if (MOD_RESULT == 0)
1612                                         {
1613                                                 /* check user against the channel banlist */
1614                                                 if (Ptr)
1615                                                 {
1616                                                         if (Ptr->bans.size())
1617                                                         {
1618                                                                 for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1619                                                                 {
1620                                                                         if (match(user->GetFullHost(),i->data))
1621                                                                         {
1622                                                                                 WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
1623                                                                                 return NULL;
1624                                                                         }
1625                                                                 }
1626                                                         }
1627                                                 }
1628                                                 log(DEBUG,"add_channel: bans checked");
1629                                         }
1630
1631                                 }
1632
1633
1634                                 if ((Ptr) && (user))
1635                                 {
1636                                         user->RemoveInvite(Ptr->name);
1637                                 }
1638
1639                                 log(DEBUG,"add_channel: invites removed");
1640
1641                         }
1642                         else
1643                         {
1644                                 log(DEBUG,"Overridden checks");
1645                         }
1646
1647
1648                 }
1649                 created = 1;
1650         }
1651
1652         log(DEBUG,"Passed channel checks");
1653
1654         for (int index =0; index != MAXCHANS; index++)
1655         {
1656                 log(DEBUG,"Check location %d",index);
1657                 if (user->chans[index].channel == NULL)
1658                 {
1659                         log(DEBUG,"Adding into their channel list at location %d",index);
1660
1661                         if (created == 2)
1662                         {
1663                                 /* first user in is given ops */
1664                                 user->chans[index].uc_modes = UCMODE_OP;
1665                         }
1666                         else
1667                         {
1668                                 user->chans[index].uc_modes = 0;
1669                         }
1670                         user->chans[index].channel = Ptr;
1671                         Ptr->IncUserCounter();
1672                         Ptr->AddUser((char*)user);
1673                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
1674
1675                         if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it.
1676                         {
1677                                 // use the stamdard J token with no privilages.
1678                                 char buffer[MAXBUF];
1679                                 if (created == 2)
1680                                 {
1681                                         snprintf(buffer,MAXBUF,"J %s @%s",user->nick,Ptr->name);
1682                                 }
1683                                 else
1684                                 {
1685                                         snprintf(buffer,MAXBUF,"J %s %s",user->nick,Ptr->name);
1686                                 }
1687                                 NetSendToAll(buffer);
1688                         }
1689
1690                         log(DEBUG,"Sent JOIN to client");
1691
1692                         if (Ptr->topicset)
1693                         {
1694                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
1695                                 WriteServ(user->fd,"333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
1696                         }
1697                         userlist(user,Ptr);
1698                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
1699                         //WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
1700                         //WriteServ(user->fd,"329 %s %s %lu", user->nick, Ptr->name, (unsigned long)Ptr->created);
1701                         FOREACH_MOD OnUserJoin(user,Ptr);
1702                         return Ptr;
1703                 }
1704         }
1705         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
1706         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
1707         return NULL;
1708 }
1709
1710 /* remove a channel from a users record, and remove the record from memory
1711  * if the channel has become empty */
1712
1713 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
1714 {
1715         if ((!user) || (!cname))
1716         {
1717                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
1718                 return NULL;
1719         }
1720
1721         chanrec* Ptr;
1722
1723         if ((!cname) || (!user))
1724         {
1725                 return NULL;
1726         }
1727
1728         Ptr = FindChan(cname);
1729
1730         if (!Ptr)
1731         {
1732                 return NULL;
1733         }
1734
1735         FOREACH_MOD OnUserPart(user,Ptr);
1736         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
1737
1738         for (int i =0; i != MAXCHANS; i++)
1739         {
1740                 /* zap it from the channel list of the user */
1741                 if (user->chans[i].channel == Ptr)
1742                 {
1743                         if (reason)
1744                         {
1745                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
1746
1747                                 if (!local)
1748                                 {
1749                                         char buffer[MAXBUF];
1750                                         snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason);
1751                                         NetSendToAll(buffer);
1752                                 }
1753
1754
1755                         }
1756                         else
1757                         {
1758                                 if (!local)
1759                                 {
1760                                         char buffer[MAXBUF];
1761                                         snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name);
1762                                         NetSendToAll(buffer);
1763                                 }
1764
1765                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
1766                         }
1767                         user->chans[i].uc_modes = 0;
1768                         user->chans[i].channel = NULL;
1769                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1770                         break;
1771                 }
1772         }
1773
1774         Ptr->DecUserCounter();
1775         Ptr->DelUser((char*)user);
1776
1777         /* if there are no users left on the channel */
1778         if (!usercount(Ptr))
1779         {
1780                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1781
1782                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1783
1784                 /* kill the record */
1785                 if (iter != chanlist.end())
1786                 {
1787                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1788                         if (iter->second) delete iter->second;
1789                         chanlist.erase(iter);
1790                 }
1791         }
1792 }
1793
1794
1795 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
1796 {
1797         if ((!src) || (!user) || (!Ptr) || (!reason))
1798         {
1799                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
1800                 return;
1801         }
1802
1803         if ((!Ptr) || (!user) || (!src))
1804         {
1805                 return;
1806         }
1807
1808         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
1809
1810         if (!has_channel(user,Ptr))
1811         {
1812                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
1813                 return;
1814         }
1815
1816         int MOD_RESULT = 0;
1817         FOREACH_RESULT(OnAccessCheck(src,user,Ptr,AC_KICK));
1818         if (MOD_RESULT == ACR_DENY)
1819                 return;
1820
1821         if (MOD_RESULT == ACR_DEFAULT)
1822         {
1823                 if (((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) && (!is_uline(src->server)))
1824                 {
1825                         if (cstatus(src,Ptr) == STATUS_HOP)
1826                         {
1827                                 WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
1828                         }
1829                         else
1830                         {
1831                                 WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
1832                         }
1833
1834                         return;
1835                 }
1836         }
1837
1838         MOD_RESULT = 0;
1839         FOREACH_RESULT(OnUserPreKick(src,user,Ptr,reason));
1840         if (MOD_RESULT)
1841                 return;
1842
1843         FOREACH_MOD OnUserKick(src,user,Ptr,reason);
1844
1845         for (int i =0; i != MAXCHANS; i++)
1846         {
1847                 /* zap it from the channel list of the user */
1848                 if (user->chans[i].channel)
1849                 if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
1850                 {
1851                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
1852                         user->chans[i].uc_modes = 0;
1853                         user->chans[i].channel = NULL;
1854                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1855                         break;
1856                 }
1857         }
1858
1859         Ptr->DecUserCounter();
1860         Ptr->DelUser((char*)user);
1861
1862         /* if there are no users left on the channel */
1863         if (!usercount(Ptr))
1864         {
1865                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1866
1867                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1868
1869                 /* kill the record */
1870                 if (iter != chanlist.end())
1871                 {
1872                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1873                         if (iter->second) delete iter->second;
1874                         chanlist.erase(iter);
1875                 }
1876         }
1877 }
1878
1879
1880
1881
1882 /* This function pokes and hacks at a parameter list like the following:
1883  *
1884  * PART #winbot,#darkgalaxy :m00!
1885  *
1886  * to turn it into a series of individual calls like this:
1887  *
1888  * PART #winbot :m00!
1889  * PART #darkgalaxy :m00!
1890  *
1891  * The seperate calls are sent to a callback function provided by the caller
1892  * (the caller will usually call itself recursively). The callback function
1893  * must be a command handler. Calling this function on a line with no list causes
1894  * no action to be taken. You must provide a starting and ending parameter number
1895  * where the range of the list can be found, useful if you have a terminating
1896  * parameter as above which is actually not part of the list, or parameters
1897  * before the actual list as well. This code is used by many functions which
1898  * can function as "one to list" (see the RFC) */
1899
1900 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
1901 {
1902         char plist[MAXBUF];
1903         char *param;
1904         char *pars[32];
1905         char blog[32][MAXBUF];
1906         char blog2[32][MAXBUF];
1907         int j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
1908         char keystr[MAXBUF];
1909         char moo[MAXBUF];
1910
1911         for (int i = 0; i <32; i++)
1912                 strcpy(blog[i],"");
1913
1914         for (int i = 0; i <32; i++)
1915                 strcpy(blog2[i],"");
1916
1917         strcpy(moo,"");
1918         for (int i = 0; i <10; i++)
1919         {
1920                 if (!parameters[i])
1921                 {
1922                         parameters[i] = moo;
1923                 }
1924         }
1925         if (joins)
1926         {
1927                 if (pcnt > 1) /* we have a key to copy */
1928                 {
1929                         strlcpy(keystr,parameters[1],MAXBUF);
1930                 }
1931         }
1932
1933         if (!parameters[start])
1934         {
1935                 return 0;
1936         }
1937         if (!strchr(parameters[start],','))
1938         {
1939                 return 0;
1940         }
1941         strcpy(plist,"");
1942         for (int i = start; i <= end; i++)
1943         {
1944                 if (parameters[i])
1945                 {
1946                         strlcat(plist,parameters[i],MAXBUF);
1947                 }
1948         }
1949
1950         j = 0;
1951         param = plist;
1952
1953         t = strlen(plist);
1954         for (int i = 0; i < t; i++)
1955         {
1956                 if (plist[i] == ',')
1957                 {
1958                         plist[i] = '\0';
1959                         strlcpy(blog[j++],param,MAXBUF);
1960                         param = plist+i+1;
1961                         if (j>20)
1962                         {
1963                                 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
1964                                 return 1;
1965                         }
1966                 }
1967         }
1968         strlcpy(blog[j++],param,MAXBUF);
1969         total = j;
1970
1971         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
1972         {
1973                 strcat(keystr,",");
1974         }
1975
1976         if ((joins) && (keystr))
1977         {
1978                 if (strchr(keystr,','))
1979                 {
1980                         j = 0;
1981                         param = keystr;
1982                         t2 = strlen(keystr);
1983                         for (int i = 0; i < t2; i++)
1984                         {
1985                                 if (keystr[i] == ',')
1986                                 {
1987                                         keystr[i] = '\0';
1988                                         strlcpy(blog2[j++],param,MAXBUF);
1989                                         param = keystr+i+1;
1990                                 }
1991                         }
1992                         strlcpy(blog2[j++],param,MAXBUF);
1993                         total2 = j;
1994                 }
1995         }
1996
1997         for (j = 0; j < total; j++)
1998         {
1999                 if (blog[j])
2000                 {
2001                         pars[0] = blog[j];
2002                 }
2003                 for (q = end; q < pcnt-1; q++)
2004                 {
2005                         if (parameters[q+1])
2006                         {
2007                                 pars[q-end+1] = parameters[q+1];
2008                         }
2009                 }
2010                 if ((joins) && (parameters[1]))
2011                 {
2012                         if (pcnt > 1)
2013                         {
2014                                 pars[1] = blog2[j];
2015                         }
2016                         else
2017                         {
2018                                 pars[1] = NULL;
2019                         }
2020                 }
2021                 /* repeatedly call the function with the hacked parameter list */
2022                 if ((joins) && (pcnt > 1))
2023                 {
2024                         if (pars[1])
2025                         {
2026                                 // pars[1] already set up and containing key from blog2[j]
2027                                 fn(pars,2,u);
2028                         }
2029                         else
2030                         {
2031                                 pars[1] = parameters[1];
2032                                 fn(pars,2,u);
2033                         }
2034                 }
2035                 else
2036                 {
2037                         fn(pars,pcnt-(end-start),u);
2038                 }
2039         }
2040
2041         return 1;
2042 }
2043
2044
2045
2046 void kill_link(userrec *user,const char* r)
2047 {
2048         user_hash::iterator iter = clientlist.find(user->nick);
2049
2050         char reason[MAXBUF];
2051
2052         strncpy(reason,r,MAXBUF);
2053
2054         if (strlen(reason)>MAXQUIT)
2055         {
2056                 reason[MAXQUIT-1] = '\0';
2057         }
2058
2059         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2060         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2061         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
2062
2063         /* bugfix, cant close() a nonblocking socket (sux!) */
2064         if (user->registered == 7) {
2065                 FOREACH_MOD OnUserQuit(user);
2066                 WriteCommonExcept(user,"QUIT :%s",reason);
2067
2068                 // Q token must go to ALL servers!!!
2069                 char buffer[MAXBUF];
2070                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2071                 NetSendToAll(buffer);
2072         }
2073
2074         FOREACH_MOD OnUserDisconnect(user);
2075
2076         if (user->fd > -1)
2077         {
2078                 shutdown(user->fd,2);
2079                 close(user->fd);
2080         }
2081
2082         if (user->registered == 7) {
2083                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
2084                 AddWhoWas(user);
2085         }
2086
2087         if (user->registered == 7) {
2088                 purge_empty_chans(user);
2089         }
2090
2091         if (iter != clientlist.end())
2092         {
2093                 log(DEBUG,"deleting user hash value %lu",(unsigned long)iter->second);
2094                 if ((iter->second) && (user->registered == 7)) {
2095                         if (iter->second) delete iter->second;
2096                 }
2097                 clientlist.erase(iter);
2098         }
2099 }
2100
2101 void kill_link_silent(userrec *user,const char* r)
2102 {
2103         user_hash::iterator iter = clientlist.find(user->nick);
2104
2105         char reason[MAXBUF];
2106
2107         strncpy(reason,r,MAXBUF);
2108
2109         if (strlen(reason)>MAXQUIT)
2110         {
2111                 reason[MAXQUIT-1] = '\0';
2112         }
2113
2114         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2115         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2116         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
2117
2118         /* bugfix, cant close() a nonblocking socket (sux!) */
2119         if (user->registered == 7) {
2120                 FOREACH_MOD OnUserQuit(user);
2121                 WriteCommonExcept(user,"QUIT :%s",reason);
2122
2123                 // Q token must go to ALL servers!!!
2124                 char buffer[MAXBUF];
2125                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2126                 NetSendToAll(buffer);
2127         }
2128
2129         FOREACH_MOD OnUserDisconnect(user);
2130
2131         if (user->fd > -1)
2132         {
2133                 shutdown(user->fd,2);
2134                 close(user->fd);
2135         }
2136
2137         if (user->registered == 7) {
2138                 purge_empty_chans(user);
2139         }
2140
2141         if (iter != clientlist.end())
2142         {
2143                 log(DEBUG,"deleting user hash value %lu",(unsigned long)iter->second);
2144                 if ((iter->second) && (user->registered == 7)) {
2145                         if (iter->second) delete iter->second;
2146                 }
2147                 clientlist.erase(iter);
2148         }
2149 }
2150
2151
2152
2153 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
2154
2155 char* Passwd(userrec *user)
2156 {
2157         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2158         {
2159                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
2160                 {
2161                         return i->pass;
2162                 }
2163         }
2164         return "";
2165 }
2166
2167 bool IsDenied(userrec *user)
2168 {
2169         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2170         {
2171                 if (match(user->host,i->host) && (i->type == CC_DENY))
2172                 {
2173                         return true;
2174                 }
2175         }
2176         return false;
2177 }
2178
2179
2180
2181
2182 /* sends out an error notice to all connected clients (not to be used
2183  * lightly!) */
2184
2185 void send_error(char *s)
2186 {
2187         log(DEBUG,"send_error: %s",s);
2188         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2189         {
2190                 if (isnick(i->second->nick))
2191                 {
2192                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
2193                 }
2194                 else
2195                 {
2196                         // fix - unregistered connections receive ERROR, not NOTICE
2197                         Write(i->second->fd,"ERROR :%s",s);
2198                 }
2199         }
2200 }
2201
2202 void Error(int status)
2203 {
2204         signal (SIGALRM, SIG_IGN);
2205         signal (SIGPIPE, SIG_IGN);
2206         signal (SIGTERM, SIG_IGN);
2207         signal (SIGABRT, SIG_IGN);
2208         signal (SIGSEGV, SIG_IGN);
2209         signal (SIGURG, SIG_IGN);
2210         signal (SIGKILL, SIG_IGN);
2211         log(DEFAULT,"*** fell down a pothole in the road to perfection ***");
2212         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
2213         Exit(status);
2214 }
2215
2216
2217 int main(int argc, char **argv)
2218 {
2219         Start();
2220         srand(time(NULL));
2221         log(DEBUG,"*** InspIRCd starting up!");
2222         if (!FileExists(CONFIG_FILE))
2223         {
2224                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
2225                 log(DEFAULT,"main: no config");
2226                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
2227                 Exit(ERROR);
2228         }
2229         if (argc > 1) {
2230                 for (int i = 1; i < argc; i++)
2231                 {
2232                         if (!strcmp(argv[i],"-nofork")) {
2233                                 nofork = true;
2234                         }
2235                         if (!strcmp(argv[i],"-wait")) {
2236                                 sleep(6);
2237                         }
2238                         if (!strcmp(argv[i],"-nolimit")) {
2239                                 unlimitcore = true;
2240                         }
2241                 }
2242         }
2243         strlcpy(MyExecutable,argv[0],MAXBUF);
2244
2245         if (InspIRCd() == ERROR)
2246         {
2247                 log(DEFAULT,"main: daemon function bailed");
2248                 printf("ERROR: could not initialise. Shutting down.\n");
2249                 Exit(ERROR);
2250         }
2251         Exit(TRUE);
2252         return 0;
2253 }
2254
2255 template<typename T> inline string ConvToStr(const T &in)
2256 {
2257         stringstream tmp;
2258         if (!(tmp << in)) return string();
2259         return tmp.str();
2260 }
2261
2262 /* re-allocates a nick in the user_hash after they change nicknames,
2263  * returns a pointer to the new user as it may have moved */
2264
2265 userrec* ReHashNick(char* Old, char* New)
2266 {
2267         //user_hash::iterator newnick;
2268         user_hash::iterator oldnick = clientlist.find(Old);
2269
2270         log(DEBUG,"ReHashNick: %s %s",Old,New);
2271
2272         if (!strcasecmp(Old,New))
2273         {
2274                 log(DEBUG,"old nick is new nick, skipping");
2275                 return oldnick->second;
2276         }
2277
2278         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
2279
2280         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
2281
2282         clientlist[New] = new userrec();
2283         clientlist[New] = oldnick->second;
2284         clientlist.erase(oldnick);
2285
2286         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
2287
2288         return clientlist[New];
2289 }
2290
2291 /* adds or updates an entry in the whowas list */
2292 void AddWhoWas(userrec* u)
2293 {
2294         user_hash::iterator iter = whowas.find(u->nick);
2295         userrec *a = new userrec();
2296         strlcpy(a->nick,u->nick,NICKMAX);
2297         strlcpy(a->ident,u->ident,64);
2298         strlcpy(a->dhost,u->dhost,256);
2299         strlcpy(a->host,u->host,256);
2300         strlcpy(a->fullname,u->fullname,128);
2301         strlcpy(a->server,u->server,256);
2302         a->signon = u->signon;
2303
2304         /* MAX_WHOWAS:   max number of /WHOWAS items
2305          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
2306          *               can be replaced by a newer one
2307          */
2308
2309         if (iter == whowas.end())
2310         {
2311                 if (whowas.size() == WHOWAS_MAX)
2312                 {
2313                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
2314                         {
2315                                 // 3600 seconds in an hour ;)
2316                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
2317                                 {
2318                                         if (i->second) delete i->second;
2319                                         i->second = a;
2320                                         log(DEBUG,"added WHOWAS entry, purged an old record");
2321                                         return;
2322                                 }
2323                         }
2324                 }
2325                 else
2326                 {
2327                         log(DEBUG,"added fresh WHOWAS entry");
2328                         whowas[a->nick] = a;
2329                 }
2330         }
2331         else
2332         {
2333                 log(DEBUG,"updated WHOWAS entry");
2334                 if (iter->second) delete iter->second;
2335                 iter->second = a;
2336         }
2337 }
2338
2339
2340 /* add a client connection to the sockets list */
2341 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
2342 {
2343         string tempnick;
2344         char tn2[MAXBUF];
2345         user_hash::iterator iter;
2346
2347         tempnick = ConvToStr(socket) + "-unknown";
2348         sprintf(tn2,"%lu-unknown",(unsigned long)socket);
2349
2350         iter = clientlist.find(tempnick);
2351
2352         if (iter != clientlist.end()) return;
2353
2354         /*
2355          * It is OK to access the value here this way since we know
2356          * it exists, we just created it above.
2357          *
2358          * At NO other time should you access a value in a map or a
2359          * hash_map this way.
2360          */
2361         clientlist[tempnick] = new userrec();
2362
2363         NonBlocking(socket);
2364         log(DEBUG,"AddClient: %lu %s %d %s",(unsigned long)socket,host,port,ip);
2365
2366         clientlist[tempnick]->fd = socket;
2367         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
2368         strncpy(clientlist[tempnick]->host, host,160);
2369         strncpy(clientlist[tempnick]->dhost, host,160);
2370         strncpy(clientlist[tempnick]->server, ServerName,256);
2371         strncpy(clientlist[tempnick]->ident, "unknown",12);
2372         clientlist[tempnick]->registered = 0;
2373         clientlist[tempnick]->signon = TIME+dns_timeout;
2374         clientlist[tempnick]->lastping = 1;
2375         clientlist[tempnick]->port = port;
2376         strncpy(clientlist[tempnick]->ip,ip,32);
2377
2378         // set the registration timeout for this user
2379         unsigned long class_regtimeout = 90;
2380         int class_flood = 0;
2381
2382         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2383         {
2384                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2385                 {
2386                         class_regtimeout = (unsigned long)i->registration_timeout;
2387                         class_flood = i->flood;
2388                         clientlist[tempnick]->pingmax = i->pingtime;
2389                         break;
2390                 }
2391         }
2392
2393         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax+dns_timeout;
2394         clientlist[tempnick]->timeout = TIME+class_regtimeout;
2395         clientlist[tempnick]->flood = class_flood;
2396
2397         for (int i = 0; i < MAXCHANS; i++)
2398         {
2399                 clientlist[tempnick]->chans[i].channel = NULL;
2400                 clientlist[tempnick]->chans[i].uc_modes = 0;
2401         }
2402
2403         if (clientlist.size() == MAXCLIENTS)
2404                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
2405
2406
2407         char* e = matches_exception(ip);
2408         if (!e)
2409         {
2410                 char* r = matches_zline(ip);
2411                 if (r)
2412                 {
2413                         char reason[MAXBUF];
2414                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
2415                         kill_link(clientlist[tempnick],reason);
2416                 }
2417         }
2418 }
2419
2420 // this function counts all users connected, wether they are registered or NOT.
2421 int usercnt(void)
2422 {
2423         return clientlist.size();
2424 }
2425
2426 // this counts only registered users, so that the percentages in /MAP don't mess up when users are sitting in an unregistered state
2427 int registered_usercount(void)
2428 {
2429         int c = 0;
2430         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2431         {
2432                 if ((i->second->fd) && (isnick(i->second->nick))) c++;
2433         }
2434         return c;
2435 }
2436
2437 int usercount_invisible(void)
2438 {
2439         int c = 0;
2440
2441         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2442         {
2443                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
2444         }
2445         return c;
2446 }
2447
2448 int usercount_opers(void)
2449 {
2450         int c = 0;
2451
2452         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2453         {
2454                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
2455         }
2456         return c;
2457 }
2458
2459 int usercount_unknown(void)
2460 {
2461         int c = 0;
2462
2463         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2464         {
2465                 if ((i->second->fd) && (i->second->registered != 7))
2466                         c++;
2467         }
2468         return c;
2469 }
2470
2471 long chancount(void)
2472 {
2473         return chanlist.size();
2474 }
2475
2476 long count_servs(void)
2477 {
2478         int c = 0;
2479         for (int i = 0; i < 32; i++)
2480         {
2481                 if (me[i] != NULL)
2482                 {
2483                         for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2484                         {
2485                                 if (strcasecmp(j->GetServerName().c_str(),ServerName))
2486                                 {
2487                                         c++;
2488                                 }
2489                         }
2490                 }
2491         }
2492         return c;
2493 }
2494
2495 long servercount(void)
2496 {
2497         return count_servs()+1;
2498 }
2499
2500 long local_count()
2501 {
2502         int c = 0;
2503         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2504         {
2505                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
2506         }
2507         return c;
2508 }
2509
2510
2511 void ShowMOTD(userrec *user)
2512 {
2513         std::string WholeMOTD = "";
2514         if (!MOTD.size())
2515         {
2516                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
2517                 return;
2518         }
2519         WholeMOTD = std::string(":") + std::string(ServerName) + std::string(" 375 ") + std::string(user->nick) + std::string(" :- ") + std::string(ServerName) + " message of the day\r\n";
2520         for (int i = 0; i != MOTD.size(); i++)
2521         {
2522                 WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 372 ") + std::string(user->nick) + std::string(" :- ") + MOTD[i] + std::string("\r\n");
2523         }
2524         WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 376 ") + std::string(user->nick) + std::string(" :End of message of the day.\r\n");
2525         // only one write operation
2526         send(user->fd,WholeMOTD.c_str(),WholeMOTD.length(),0);
2527
2528 }
2529
2530 void ShowRULES(userrec *user)
2531 {
2532         if (!RULES.size())
2533         {
2534                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
2535                 return;
2536         }
2537         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
2538         for (int i = 0; i != RULES.size(); i++)
2539         {
2540                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
2541         }
2542         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
2543 }
2544
2545 /* shows the message of the day, and any other on-logon stuff */
2546 void FullConnectUser(userrec* user)
2547 {
2548         user->registered = 7;
2549         user->idle_lastmsg = TIME;
2550         log(DEBUG,"ConnectUser: %s",user->nick);
2551
2552         if ((strcmp(Passwd(user),"")) && (!user->haspassed))
2553         {
2554                 kill_link(user,"Invalid password");
2555                 return;
2556         }
2557         if (IsDenied(user))
2558         {
2559                 kill_link(user,"Unauthorised connection");
2560                 return;
2561         }
2562
2563         char match_against[MAXBUF];
2564         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
2565         char* e = matches_exception(match_against);
2566         if (!e)
2567         {
2568                 char* r = matches_gline(match_against);
2569                 if (r)
2570                 {
2571                         char reason[MAXBUF];
2572                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
2573                         kill_link_silent(user,reason);
2574                         return;
2575                 }
2576                 r = matches_kline(user->host);
2577                 if (r)
2578                 {
2579                         char reason[MAXBUF];
2580                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
2581                         kill_link_silent(user,reason);
2582                         return;
2583                 }
2584         }
2585
2586         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
2587         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
2588         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
2589         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
2590         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
2591         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
2592         std::stringstream v;
2593         v << "MESHED WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
2594         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
2595         v << " TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 CHANMODES=ohvb,k,l,psmnti NETWORK=";
2596         v << std::string(Network);
2597         std::string data005 = v.str();
2598         FOREACH_MOD On005Numeric(data005);
2599         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
2600         // so i'd better split it :)
2601         std::stringstream out(data005);
2602         std::string token = "";
2603         std::string line5 = "";
2604         int token_counter = 0;
2605         while (!out.eof())
2606         {
2607                 out >> token;
2608                 line5 = line5 + token + " ";
2609                 token_counter++;
2610                 if ((token_counter >= 13) || (out.eof() == true))
2611                 {
2612                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
2613                         line5 = "";
2614                         token_counter = 0;
2615                 }
2616         }
2617         ShowMOTD(user);
2618         FOREACH_MOD OnUserConnect(user);
2619         WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,user->ip);
2620
2621         char buffer[MAXBUF];
2622         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);
2623         NetSendToAll(buffer);
2624 }
2625
2626
2627 // this returns 1 when all modules are satisfied that the user should be allowed onto the irc server
2628 // (until this returns true, a user will block in the waiting state, waiting to connect up to the
2629 // registration timeout maximum seconds)
2630 bool AllModulesReportReady(userrec* user)
2631 {
2632         for (int i = 0; i <= MODCOUNT; i++)
2633         {
2634                 int res = modules[i]->OnCheckReady(user);
2635                         if (!res)
2636                                 return false;
2637         }
2638         return true;
2639 }
2640
2641 /* shows the message of the day, and any other on-logon stuff */
2642 void ConnectUser(userrec *user)
2643 {
2644         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
2645         if ((user->dns_done) && (user->registered >= 3) && (AllModulesReportReady(user)))
2646         {
2647                 FullConnectUser(user);
2648         }
2649 }
2650
2651 void handle_version(char **parameters, int pcnt, userrec *user)
2652 {
2653         char Revision[] = "$Revision$";
2654
2655         char *s1 = Revision;
2656         char *savept;
2657         char *v2 = strtok_r(s1," ",&savept);
2658         s1 = savept;
2659         v2 = strtok_r(s1," ",&savept);
2660         s1 = savept;
2661
2662         WriteServ(user->fd,"351 %s :%s Rev. %s %s :%s (O=%lu)",user->nick,VERSION,v2,ServerName,SYSTEM,(unsigned long)OPTIMISATION);
2663 }
2664
2665
2666 // calls a handler function for a command
2667
2668 void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
2669 {
2670                 for (int i = 0; i < cmdlist.size(); i++)
2671                 {
2672                         if (!strcasecmp(cmdlist[i].command,commandname))
2673                         {
2674                                 if (cmdlist[i].handler_function)
2675                                 {
2676                                         if (pcnt>=cmdlist[i].min_params)
2677                                         {
2678                                                 if (strchr(user->modes,cmdlist[i].flags_needed))
2679                                                 {
2680                                                         cmdlist[i].handler_function(parameters,pcnt,user);
2681                                                 }
2682                                         }
2683                                 }
2684                         }
2685                 }
2686 }
2687
2688 void DoSplitEveryone()
2689 {
2690         bool go_again = true;
2691         while (go_again)
2692         {
2693                 go_again = false;
2694                 for (int i = 0; i < 32; i++)
2695                 {
2696                         if (me[i] != NULL)
2697                         {
2698                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2699                                 {
2700                                         if (strcasecmp(j->GetServerName().c_str(),ServerName))
2701                                         {
2702                                                 j->routes.clear();
2703                                                 j->CloseConnection();
2704                                                 me[i]->connectors.erase(j);
2705                                                 go_again = true;
2706                                                 break;
2707                                         }
2708                                 }
2709                         }
2710                 }
2711         }
2712         log(DEBUG,"Removed server. Will remove clients...");
2713         // iterate through the userlist and remove all users on this server.
2714         // because we're dealing with a mesh, we dont have to deal with anything
2715         // "down-route" from this server (nice huh)
2716         go_again = true;
2717         char reason[MAXBUF];
2718         while (go_again)
2719         {
2720                 go_again = false;
2721                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
2722                 {
2723                         if (strcasecmp(u->second->server,ServerName))
2724                         {
2725                                 snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server);
2726                                 kill_link(u->second,reason);
2727                                 go_again = true;
2728                                 break;
2729                         }
2730                 }
2731         }
2732 }
2733
2734
2735
2736 char islast(const char* s)
2737 {
2738         char c = '`';
2739         for (int j = 0; j < 32; j++)
2740         {
2741                 if (me[j] != NULL)
2742                 {
2743                         for (int k = 0; k < me[j]->connectors.size(); k++)
2744                         {
2745                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2746                                 {
2747                                         c = '|';
2748                                 }
2749                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2750                                 {
2751                                         c = '`';
2752                                 }
2753                         }
2754                 }
2755         }
2756         return c;
2757 }
2758
2759 long map_count(const char* s)
2760 {
2761         int c = 0;
2762         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2763         {
2764                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
2765         }
2766         return c;
2767 }
2768
2769
2770 void force_nickchange(userrec* user,const char* newnick)
2771 {
2772         char nick[MAXBUF];
2773         int MOD_RESULT = 0;
2774
2775         strcpy(nick,"");
2776
2777         FOREACH_RESULT(OnUserPreNick(user,newnick));
2778         if (MOD_RESULT) {
2779                 kill_link(user,"Nickname collision");
2780                 return;
2781         }
2782         if (matches_qline(newnick))
2783         {
2784                 kill_link(user,"Nickname collision");
2785                 return;
2786         }
2787
2788         if (user)
2789         {
2790                 if (newnick)
2791                 {
2792                         strncpy(nick,newnick,MAXBUF);
2793                 }
2794                 if (user->registered == 7)
2795                 {
2796                         char* pars[1];
2797                         pars[0] = nick;
2798                         handle_nick(pars,1,user);
2799                 }
2800         }
2801 }
2802
2803
2804 int process_parameters(char **command_p,char *parameters)
2805 {
2806         int j = 0;
2807         int q = strlen(parameters);
2808         if (!q)
2809         {
2810                 /* no parameters, command_p invalid! */
2811                 return 0;
2812         }
2813         if (parameters[0] == ':')
2814         {
2815                 command_p[0] = parameters+1;
2816                 return 1;
2817         }
2818         if (q)
2819         {
2820                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
2821                 {
2822                         /* only one parameter */
2823                         command_p[0] = parameters;
2824                         if (parameters[0] == ':')
2825                         {
2826                                 if (strchr(parameters,' ') != NULL)
2827                                 {
2828                                         command_p[0]++;
2829                                 }
2830                         }
2831                         return 1;
2832                 }
2833         }
2834         command_p[j++] = parameters;
2835         for (int i = 0; i <= q; i++)
2836         {
2837                 if (parameters[i] == ' ')
2838                 {
2839                         command_p[j++] = parameters+i+1;
2840                         parameters[i] = '\0';
2841                         if (command_p[j-1][0] == ':')
2842                         {
2843                                 *command_p[j-1]++; /* remove dodgy ":" */
2844                                 break;
2845                                 /* parameter like this marks end of the sequence */
2846                         }
2847                 }
2848         }
2849         return j; /* returns total number of items in the list */
2850 }
2851
2852 void process_command(userrec *user, char* cmd)
2853 {
2854         char *parameters;
2855         char *command;
2856         char *command_p[127];
2857         char p[MAXBUF], temp[MAXBUF];
2858         int j, items, cmd_found;
2859
2860         for (int i = 0; i < 127; i++)
2861                 command_p[i] = NULL;
2862
2863         if (!user)
2864         {
2865                 return;
2866         }
2867         if (!cmd)
2868         {
2869                 return;
2870         }
2871         if (!cmd[0])
2872         {
2873                 return;
2874         }
2875
2876         int total_params = 0;
2877         if (strlen(cmd)>2)
2878         {
2879                 for (int q = 0; q < strlen(cmd)-1; q++)
2880                 {
2881                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
2882                         {
2883                                 total_params++;
2884                                 // found a 'trailing', we dont count them after this.
2885                                 break;
2886                         }
2887                         if (cmd[q] == ' ')
2888                                 total_params++;
2889                 }
2890         }
2891
2892         // another phidjit bug...
2893         if (total_params > 126)
2894         {
2895                 *(strchr(cmd,' ')) = '\0';
2896                 WriteServ(user->fd,"421 %s %s :Too many parameters given",user->nick,cmd);
2897                 return;
2898         }
2899
2900         strlcpy(temp,cmd,MAXBUF);
2901
2902         std::string tmp = cmd;
2903         for (int i = 0; i <= MODCOUNT; i++)
2904         {
2905                 std::string oldtmp = tmp;
2906                 modules[i]->OnServerRaw(tmp,true,user);
2907                 if (oldtmp != tmp)
2908                 {
2909                         log(DEBUG,"A Module changed the input string!");
2910                         log(DEBUG,"New string: %s",tmp.c_str());
2911                         log(DEBUG,"Old string: %s",oldtmp.c_str());
2912                         break;
2913                 }
2914         }
2915         strlcpy(cmd,tmp.c_str(),MAXBUF);
2916         strlcpy(temp,cmd,MAXBUF);
2917
2918         if (!strchr(cmd,' '))
2919         {
2920                 /* no parameters, lets skip the formalities and not chop up
2921                  * the string */
2922                 log(DEBUG,"About to preprocess command with no params");
2923                 items = 0;
2924                 command_p[0] = NULL;
2925                 parameters = NULL;
2926                 for (int i = 0; i <= strlen(cmd); i++)
2927                 {
2928                         cmd[i] = toupper(cmd[i]);
2929                 }
2930                 command = cmd;
2931         }
2932         else
2933         {
2934                 strcpy(cmd,"");
2935                 j = 0;
2936                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
2937                 for (int i = 0; i < strlen(temp); i++)
2938                 {
2939                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
2940                         {
2941                                 cmd[j++] = temp[i];
2942                                 cmd[j] = 0;
2943                         }
2944                 }
2945                 /* split the full string into a command plus parameters */
2946                 parameters = p;
2947                 strcpy(p," ");
2948                 command = cmd;
2949                 if (strchr(cmd,' '))
2950                 {
2951                         for (int i = 0; i <= strlen(cmd); i++)
2952                         {
2953                                 /* capitalise the command ONLY, leave params intact */
2954                                 cmd[i] = toupper(cmd[i]);
2955                                 /* are we nearly there yet?! :P */
2956                                 if (cmd[i] == ' ')
2957                                 {
2958                                         command = cmd;
2959                                         parameters = cmd+i+1;
2960                                         cmd[i] = '\0';
2961                                         break;
2962                                 }
2963                         }
2964                 }
2965                 else
2966                 {
2967                         for (int i = 0; i <= strlen(cmd); i++)
2968                         {
2969                                 cmd[i] = toupper(cmd[i]);
2970                         }
2971                 }
2972
2973         }
2974         cmd_found = 0;
2975
2976         if (strlen(command)>MAXCOMMAND)
2977         {
2978                 WriteServ(user->fd,"421 %s %s :Command too long",user->nick,command);
2979                 return;
2980         }
2981
2982         for (int x = 0; x < strlen(command); x++)
2983         {
2984                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
2985                 {
2986                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
2987                         {
2988                                 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
2989                                 {
2990                                         WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
2991                                         return;
2992                                 }
2993                         }
2994                 }
2995         }
2996
2997         for (int i = 0; i != cmdlist.size(); i++)
2998         {
2999                 if (cmdlist[i].command[0])
3000                 {
3001                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
3002                         {
3003                                 if (parameters)
3004                                 {
3005                                         if (parameters[0])
3006                                         {
3007                                                 items = process_parameters(command_p,parameters);
3008                                         }
3009                                         else
3010                                         {
3011                                                 items = 0;
3012                                                 command_p[0] = NULL;
3013                                         }
3014                                 }
3015                                 else
3016                                 {
3017                                         items = 0;
3018                                         command_p[0] = NULL;
3019                                 }
3020
3021                                 if (user)
3022                                 {
3023                                         /* activity resets the ping pending timer */
3024                                         user->nping = TIME + user->pingmax;
3025                                         if ((items) < cmdlist[i].min_params)
3026                                         {
3027                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
3028                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
3029                                                 return;
3030                                         }
3031                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
3032                                         {
3033                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3034                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
3035                                                 cmd_found = 1;
3036                                                 return;
3037                                         }
3038                                         if ((cmdlist[i].flags_needed) && (!user->HasPermission(command)))
3039                                         {
3040                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3041                                                 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
3042                                                 cmd_found = 1;
3043                                                 return;
3044                                         }
3045                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
3046                                          * deny command! */
3047                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
3048                                         {
3049                                                 if ((!isnick(user->nick)) || (user->registered != 7))
3050                                                 {
3051                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
3052                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
3053                                                         return;
3054                                                 }
3055                                         }
3056                                         if ((user->registered == 7) && (!strchr(user->modes,'o')))
3057                                         {
3058                                                 char* mycmd;
3059                                                 char* savept2;
3060                                                 mycmd = strtok_r(DisabledCommands," ",&savept2);
3061                                                 while (mycmd)
3062                                                 {
3063                                                         if (!strcasecmp(mycmd,command))
3064                                                         {
3065                                                                 // command is disabled!
3066                                                                 WriteServ(user->fd,"421 %s %s :This command has been disabled.",user->nick,command);
3067                                                                 return;
3068                                                         }
3069                                                         mycmd = strtok_r(NULL," ",&savept2);
3070                                                 }
3071
3072
3073                                         }
3074                                         if ((user->registered == 7) || (!strncmp(command,"USER",4)) || (!strncmp(command,"NICK",4)) || (!strncmp(command,"PASS",4)))
3075                                         {
3076                                                 if (cmdlist[i].handler_function)
3077                                                 {
3078
3079                                                         /* ikky /stats counters */
3080                                                         if (temp)
3081                                                         {
3082                                                                 if (user)
3083                                                                 {
3084                                                                         user->bytes_in += strlen(temp);
3085                                                                         user->cmds_in++;
3086                                                                         user->bytes_out+=strlen(temp);
3087                                                                         user->cmds_out++;
3088                                                                 }
3089                                                                 cmdlist[i].use_count++;
3090                                                                 cmdlist[i].total_bytes+=strlen(temp);
3091                                                         }
3092
3093                                                         int MOD_RESULT = 0;
3094                                                         FOREACH_RESULT(OnPreCommand(command,command_p,items,user));
3095                                                         if (MOD_RESULT == 1) {
3096                                                                 return;
3097                                                         }
3098
3099                                                         /* WARNING: nothing may come after the
3100                                                          * command handler call, as the handler
3101                                                          * may free the user structure! */
3102
3103                                                         cmdlist[i].handler_function(command_p,items,user);
3104                                                 }
3105                                                 return;
3106                                         }
3107                                         else
3108                                         {
3109                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
3110                                                 return;
3111                                         }
3112                                 }
3113                                 cmd_found = 1;
3114                         }
3115                 }
3116         }
3117         if ((!cmd_found) && (user))
3118         {
3119                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3120         }
3121 }
3122
3123
3124 void createcommand(char* cmd, handlerfunc f, char flags, int minparams,char* source)
3125 {
3126         command_t comm;
3127         /* create the command and push it onto the table */
3128         strlcpy(comm.command,cmd,MAXBUF);
3129         strlcpy(comm.source,source,MAXBUF);
3130         comm.handler_function = f;
3131         comm.flags_needed = flags;
3132         comm.min_params = minparams;
3133         comm.use_count = 0;
3134         comm.total_bytes = 0;
3135         cmdlist.push_back(comm);
3136         log(DEBUG,"Added command %s (%lu parameters)",cmd,(unsigned long)minparams);
3137 }
3138
3139 bool removecommands(const char* source)
3140 {
3141         bool go_again = true;
3142         while (go_again)
3143         {
3144                 go_again = false;
3145                 for (std::deque<command_t>::iterator i = cmdlist.begin(); i != cmdlist.end(); i++)
3146                 {
3147                         if (!strcmp(i->source,source))
3148                         {
3149                                 log(DEBUG,"removecommands(%s) Removing dependent command: %s",i->source,i->command);
3150                                 cmdlist.erase(i);
3151                                 go_again = true;
3152                                 break;
3153                         }
3154                 }
3155         }
3156         return true;
3157 }
3158
3159 void SetupCommandTable(void)
3160 {
3161         createcommand("USER",handle_user,0,4,"<core>");
3162         createcommand("NICK",handle_nick,0,1,"<core>");
3163         createcommand("QUIT",handle_quit,0,0,"<core>");
3164         createcommand("VERSION",handle_version,0,0,"<core>");
3165         createcommand("PING",handle_ping,0,1,"<core>");
3166         createcommand("PONG",handle_pong,0,1,"<core>");
3167         createcommand("ADMIN",handle_admin,0,0,"<core>");
3168         createcommand("PRIVMSG",handle_privmsg,0,2,"<core>");
3169         createcommand("INFO",handle_info,0,0,"<core>");
3170         createcommand("TIME",handle_time,0,0,"<core>");
3171         createcommand("WHOIS",handle_whois,0,1,"<core>");
3172         createcommand("WALLOPS",handle_wallops,'o',1,"<core>");
3173         createcommand("NOTICE",handle_notice,0,2,"<core>");
3174         createcommand("JOIN",handle_join,0,1,"<core>");
3175         createcommand("NAMES",handle_names,0,0,"<core>");
3176         createcommand("PART",handle_part,0,1,"<core>");
3177         createcommand("KICK",handle_kick,0,2,"<core>");
3178         createcommand("MODE",handle_mode,0,1,"<core>");
3179         createcommand("TOPIC",handle_topic,0,1,"<core>");
3180         createcommand("WHO",handle_who,0,1,"<core>");
3181         createcommand("MOTD",handle_motd,0,0,"<core>");
3182         createcommand("RULES",handle_rules,0,0,"<core>");
3183         createcommand("OPER",handle_oper,0,2,"<core>");
3184         createcommand("LIST",handle_list,0,0,"<core>");
3185         createcommand("DIE",handle_die,'o',1,"<core>");
3186         createcommand("RESTART",handle_restart,'o',1,"<core>");
3187         createcommand("KILL",handle_kill,'o',2,"<core>");
3188         createcommand("REHASH",handle_rehash,'o',0,"<core>");
3189         createcommand("LUSERS",handle_lusers,0,0,"<core>");
3190         createcommand("STATS",handle_stats,0,1,"<core>");
3191         createcommand("USERHOST",handle_userhost,0,1,"<core>");
3192         createcommand("AWAY",handle_away,0,0,"<core>");
3193         createcommand("ISON",handle_ison,0,0,"<core>");
3194         createcommand("SUMMON",handle_summon,0,0,"<core>");
3195         createcommand("USERS",handle_users,0,0,"<core>");
3196         createcommand("INVITE",handle_invite,0,2,"<core>");
3197         createcommand("PASS",handle_pass,0,1,"<core>");
3198         createcommand("TRACE",handle_trace,'o',0,"<core>");
3199         createcommand("WHOWAS",handle_whowas,0,1,"<core>");
3200         createcommand("CONNECT",handle_connect,'o',1,"<core>");
3201         createcommand("SQUIT",handle_squit,'o',0,"<core>");
3202         createcommand("MODULES",handle_modules,0,0,"<core>");
3203         createcommand("LINKS",handle_links,0,0,"<core>");
3204         createcommand("MAP",handle_map,0,0,"<core>");
3205         createcommand("KLINE",handle_kline,'o',1,"<core>");
3206         createcommand("GLINE",handle_gline,'o',1,"<core>");
3207         createcommand("ZLINE",handle_zline,'o',1,"<core>");
3208         createcommand("QLINE",handle_qline,'o',1,"<core>");
3209         createcommand("ELINE",handle_eline,'o',1,"<core>");
3210         createcommand("LOADMODULE",handle_loadmodule,'o',1,"<core>");
3211         createcommand("UNLOADMODULE",handle_unloadmodule,'o',1,"<core>");
3212         createcommand("SERVER",handle_server,0,0,"<core>");
3213 }
3214
3215 void process_buffer(const char* cmdbuf,userrec *user)
3216 {
3217         if (!user)
3218         {
3219                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3220                 return;
3221         }
3222         char cmd[MAXBUF];
3223         if (!cmdbuf)
3224         {
3225                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3226                 return;
3227         }
3228         if (!cmdbuf[0])
3229         {
3230                 return;
3231         }
3232         while (*cmdbuf == ' ') cmdbuf++; // strip leading spaces
3233
3234         strlcpy(cmd,cmdbuf,MAXBUF);
3235         if (!cmd[0])
3236         {
3237                 return;
3238         }
3239         int sl = strlen(cmd)-1;
3240         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3241         {
3242                 cmd[sl] = '\0';
3243         }
3244         sl = strlen(cmd)-1;
3245         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3246         {
3247                 cmd[sl] = '\0';
3248         }
3249         sl = strlen(cmd)-1;
3250         while (cmd[sl] == ' ') // strip trailing spaces
3251         {
3252                 cmd[sl] = '\0';
3253                 sl = strlen(cmd)-1;
3254         }
3255
3256         if (!cmd[0])
3257         {
3258                 return;
3259         }
3260         log(DEBUG,"CMDIN: %s %s",user->nick,cmd);
3261         tidystring(cmd);
3262         if ((user) && (cmd))
3263         {
3264                 process_command(user,cmd);
3265         }
3266 }
3267
3268 void DoSync(serverrec* serv, char* tcp_host)
3269 {
3270         char data[MAXBUF];
3271         log(DEBUG,"Sending sync");
3272         // send start of sync marker: Y <timestamp>
3273         // at this point the ircd receiving it starts broadcasting this netburst to all ircds
3274         // except the ones its receiving it from.
3275         snprintf(data,MAXBUF,"Y %lu",(unsigned long)TIME);
3276         serv->SendPacket(data,tcp_host);
3277         // send users and channels
3278         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
3279         {
3280                 snprintf(data,MAXBUF,"N %lu %s %s %s %s +%s %s %s :%s",(unsigned long)u->second->age,u->second->nick,u->second->host,u->second->dhost,u->second->ident,u->second->modes,u->second->ip,u->second->server,u->second->fullname);
3281                 serv->SendPacket(data,tcp_host);
3282                 if (strchr(u->second->modes,'o'))
3283                 {
3284                         snprintf(data,MAXBUF,"| %s %s",u->second->nick,u->second->oper);
3285                         serv->SendPacket(data,tcp_host);
3286                 }
3287                 for (int i = 0; i <= MODCOUNT; i++)
3288                 {
3289                         string_list l = modules[i]->OnUserSync(u->second);
3290                         for (int j = 0; j < l.size(); j++)
3291                         {
3292                                 strlcpy(data,l[j].c_str(),MAXBUF);
3293                                 serv->SendPacket(data,tcp_host);
3294                         }
3295                 }
3296                 char* chl = chlist(u->second);
3297                 if (strcmp(chl,""))
3298                 {
3299                         snprintf(data,MAXBUF,"J %s %s",u->second->nick,chl);
3300                         serv->SendPacket(data,tcp_host);
3301                 }
3302         }
3303         // send channel modes, topics etc...
3304         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
3305         {
3306                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
3307                 serv->SendPacket(data,tcp_host);
3308                 for (int i = 0; i <= MODCOUNT; i++)
3309                 {
3310                         string_list l = modules[i]->OnChannelSync(c->second);
3311                         for (int j = 0; j < l.size(); j++)
3312                         {
3313                                 strlcpy(data,l[j].c_str(),MAXBUF);
3314                                 serv->SendPacket(data,tcp_host);
3315                         }
3316                 }
3317                 if (c->second->topic[0])
3318                 {
3319                         snprintf(data,MAXBUF,"T %lu %s %s :%s",(unsigned long)c->second->topicset,c->second->setby,c->second->name,c->second->topic);
3320                         serv->SendPacket(data,tcp_host);
3321                 }
3322                 // send current banlist
3323
3324                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
3325                 {
3326                         snprintf(data,MAXBUF,"M %s +b %s",c->second->name,b->data);
3327                         serv->SendPacket(data,tcp_host);
3328                 }
3329         }
3330         // sync global zlines, glines, etc
3331         sync_xlines(serv,tcp_host);
3332
3333         for (int j = 0; j < 32; j++)
3334         {
3335                 if (me[j] != NULL)
3336                 {
3337                         for (int k = 0; k < me[j]->connectors.size(); k++)
3338                         {
3339                                 if (is_uline(me[j]->connectors[k].GetServerName().c_str()))
3340                                 {
3341                                         snprintf(data,MAXBUF,"H %s",me[j]->connectors[k].GetServerName().c_str());
3342                                         serv->SendPacket(data,tcp_host);
3343                                         NetSendMyRoutingTable();
3344                                 }
3345                         }
3346                 }
3347         }
3348
3349         snprintf(data,MAXBUF,"F %lu",(unsigned long)TIME);
3350         serv->SendPacket(data,tcp_host);
3351         log(DEBUG,"Sent sync");
3352         // ircd sends its serverlist after the end of sync here
3353 }
3354
3355
3356 void NetSendMyRoutingTable()
3357 {
3358         // send out a line saying what is reachable to us.
3359         // E.g. if A is linked to B C and D, send out:
3360         // $ A B C D
3361         // if its only linked to B and D send out:
3362         // $ A B D
3363         // if it has no links, dont even send out the line at all.
3364         char buffer[MAXBUF];
3365         snprintf(buffer,MAXBUF,"$ %s",ServerName);
3366         bool sendit = false;
3367         for (int i = 0; i < 32; i++)
3368         {
3369                 if (me[i] != NULL)
3370                 {
3371                         for (int j = 0; j < me[i]->connectors.size(); j++)
3372                         {
3373                                 if ((me[i]->connectors[j].GetState() != STATE_DISCONNECTED) || (is_uline(me[i]->connectors[j].GetServerName().c_str())))
3374                                 {
3375                                         strlcat(buffer," ",MAXBUF);
3376                                         strlcat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF);
3377                                         sendit = true;
3378                                 }
3379                         }
3380                 }
3381         }
3382         if (sendit)
3383                 NetSendToAll(buffer);
3384 }
3385
3386
3387 void DoSplit(const char* params)
3388 {
3389         bool go_again = true;
3390         while (go_again)
3391         {
3392                 go_again = false;
3393                 for (int i = 0; i < 32; i++)
3394                 {
3395                         if (me[i] != NULL)
3396                         {
3397                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3398                                 {
3399                                         if (!strcasecmp(j->GetServerName().c_str(),params))
3400                                         {
3401                                                 j->routes.clear();
3402                                                 j->CloseConnection();
3403                                                 me[i]->connectors.erase(j);
3404                                                 go_again = true;
3405                                                 break;
3406                                         }
3407                                 }
3408                         }
3409                 }
3410         }
3411         log(DEBUG,"Removed server. Will remove clients...");
3412         // iterate through the userlist and remove all users on this server.
3413         // because we're dealing with a mesh, we dont have to deal with anything
3414         // "down-route" from this server (nice huh)
3415         go_again = true;
3416         char reason[MAXBUF];
3417         snprintf(reason,MAXBUF,"%s %s",ServerName,params);
3418         while (go_again)
3419         {
3420                 go_again = false;
3421                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3422                 {
3423                         if (!strcasecmp(u->second->server,params))
3424                         {
3425                                 kill_link(u->second,reason);
3426                                 go_again = true;
3427                                 break;
3428                         }
3429                 }
3430         }
3431 }
3432
3433 // removes a server. Will NOT remove its users!
3434
3435 void RemoveServer(const char* name)
3436 {
3437         bool go_again = true;
3438         while (go_again)
3439         {
3440                 go_again = false;
3441                 for (int i = 0; i < 32; i++)
3442                 {
3443                         if (me[i] != NULL)
3444                         {
3445                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3446                                 {
3447                                         if (!strcasecmp(j->GetServerName().c_str(),name))
3448                                         {
3449                                                 j->routes.clear();
3450                                                 j->CloseConnection();
3451                                                 me[i]->connectors.erase(j);
3452                                                 go_again = true;
3453                                                 break;
3454                                         }
3455                                 }
3456                         }
3457                 }
3458         }
3459 }
3460
3461
3462 char MODERR[MAXBUF];
3463
3464 char* ModuleError()
3465 {
3466         return MODERR;
3467 }
3468
3469 void erase_factory(int j)
3470 {
3471         int v = 0;
3472         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
3473         {
3474                 if (v == j)
3475                 {
3476                         factory.erase(t);
3477                         factory.push_back(NULL);
3478                         return;
3479                 }
3480                 v++;
3481         }
3482 }
3483
3484 void erase_module(int j)
3485 {
3486         int v1 = 0;
3487         for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
3488         {
3489                 if (v1 == j)
3490                 {
3491                         delete *m;
3492                         modules.erase(m);
3493                         modules.push_back(NULL);
3494                         break;
3495                 }
3496                 v1++;
3497         }
3498         int v2 = 0;
3499         for (std::vector<std::string>::iterator v = module_names.begin(); v != module_names.end(); v++)
3500         {
3501                 if (v2 == j)
3502                 {
3503                        module_names.erase(v);
3504                        break;
3505                 }
3506                 v2++;
3507         }
3508
3509 }
3510
3511 bool UnloadModule(const char* filename)
3512 {
3513         for (int j = 0; j != module_names.size(); j++)
3514         {
3515                 if (module_names[j] == std::string(filename))
3516                 {
3517                         if (modules[j]->GetVersion().Flags & VF_STATIC)
3518                         {
3519                                 log(DEFAULT,"Failed to unload STATIC module %s",filename);
3520                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
3521                                 return false;
3522                         }
3523                         // found the module
3524                         log(DEBUG,"Deleting module...");
3525                         erase_module(j);
3526                         log(DEBUG,"Erasing module entry...");
3527                         erase_factory(j);
3528                         log(DEBUG,"Removing dependent commands...");
3529                         removecommands(filename);
3530                         log(DEFAULT,"Module %s unloaded",filename);
3531                         MODCOUNT--;
3532                         return true;
3533                 }
3534         }
3535         log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
3536         snprintf(MODERR,MAXBUF,"Module not loaded");
3537         return false;
3538 }
3539
3540 bool DirValid(char* dirandfile)
3541 {
3542         char work[MAXBUF];
3543         strlcpy(work,dirandfile,MAXBUF);
3544         int p = strlen(work);
3545         // we just want the dir
3546         while (strlen(work))
3547         {
3548                 if (work[p] == '/')
3549                 {
3550                         work[p] = '\0';
3551                         break;
3552                 }
3553                 work[p--] = '\0';
3554         }
3555         char buffer[MAXBUF], otherdir[MAXBUF];
3556         // Get the current working directory
3557         if( getcwd( buffer, MAXBUF ) == NULL )
3558                 return false;
3559         chdir(work);
3560         if( getcwd( otherdir, MAXBUF ) == NULL )
3561                 return false;
3562         chdir(buffer);
3563         if (strlen(otherdir) >= strlen(work))
3564         {
3565                 otherdir[strlen(work)] = '\0';
3566                 if (!strcmp(otherdir,work))
3567                 {
3568                         return true;
3569                 }
3570                 return false;
3571         }
3572         else return false;
3573 }
3574
3575 bool LoadModule(const char* filename)
3576 {
3577         char modfile[MAXBUF];
3578         snprintf(modfile,MAXBUF,"%s/%s",ModPath,filename);
3579         if (!DirValid(modfile))
3580         {
3581                 log(DEFAULT,"Module %s is not within the modules directory.",modfile);
3582                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
3583                 return false;
3584         }
3585         log(DEBUG,"Loading module: %s",modfile);
3586         if (FileExists(modfile))
3587         {
3588                 for (int j = 0; j < module_names.size(); j++)
3589                 {
3590                         if (module_names[j] == std::string(filename))
3591                         {
3592                                 log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
3593                                 snprintf(MODERR,MAXBUF,"Module already loaded");
3594                                 return false;
3595                         }
3596                 }
3597                 ircd_module* a = new ircd_module(modfile);
3598                 factory[MODCOUNT+1] = a;
3599                 if (factory[MODCOUNT+1]->LastError())
3600                 {
3601                         log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
3602                         snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
3603                         MODCOUNT--;
3604                         return false;
3605                 }
3606                 if (factory[MODCOUNT+1]->factory)
3607                 {
3608                         Module* m = factory[MODCOUNT+1]->factory->CreateModule();
3609                         modules[MODCOUNT+1] = m;
3610                         /* save the module and the module's classfactory, if
3611                          * this isnt done, random crashes can occur :/ */
3612                         module_names.push_back(filename);
3613                 }
3614                 else
3615                 {
3616                         log(DEFAULT,"Unable to load %s",modfile);
3617                         snprintf(MODERR,MAXBUF,"Factory function failed!");
3618                         return false;
3619                 }
3620         }
3621         else
3622         {
3623                 log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
3624                 snprintf(MODERR,MAXBUF,"Module file could not be found");
3625                 return false;
3626         }
3627         MODCOUNT++;
3628         return true;
3629 }
3630
3631 int InspIRCd(void)
3632 {
3633         struct sockaddr_in client,server;
3634         char addrs[MAXBUF][255];
3635         int incomingSockfd, result = TRUE;
3636         socklen_t length;
3637         int count = 0;
3638         int selectResult = 0, selectResult2 = 0;
3639         char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
3640         fd_set selectFds;
3641         timeval tv;
3642
3643         log_file = fopen("ircd.log","a+");
3644         if (!log_file)
3645         {
3646                 printf("ERROR: Could not write to logfile ircd.log, bailing!\n\n");
3647                 Exit(ERROR);
3648         }
3649
3650         log(DEFAULT,"$Id$");
3651         if (geteuid() == 0)
3652         {
3653                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
3654                 Exit(ERROR);
3655                 log(DEFAULT,"InspIRCd: startup: not starting with UID 0!");
3656         }
3657         SetupCommandTable();
3658         log(DEBUG,"InspIRCd: startup: default command table set up");
3659
3660         ReadConfig(true,NULL);
3661         if (DieValue[0])
3662         {
3663                 printf("WARNING: %s\n\n",DieValue);
3664                 log(DEFAULT,"Ut-Oh, somebody didn't read their config file: '%s'",DieValue);
3665                 exit(0);
3666         }
3667         log(DEBUG,"InspIRCd: startup: read config");
3668
3669         int clientportcount = 0, serverportcount = 0;
3670
3671         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
3672         {
3673                 ConfValue("bind","port",count,configToken,&config_f);
3674                 ConfValue("bind","address",count,Addr,&config_f);
3675                 ConfValue("bind","type",count,Type,&config_f);
3676                 if (!strcmp(Type,"servers"))
3677                 {
3678                         char Default[MAXBUF];
3679                         strcpy(Default,"no");
3680                         ConfValue("bind","default",count,Default,&config_f);
3681                         if (strchr(Default,'y'))
3682                         {
3683                                 defaultRoute = serverportcount;
3684                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
3685                         }
3686                         me[serverportcount] = new serverrec(ServerName,100L,false);
3687                         if (!me[serverportcount]->CreateListener(Addr,atoi(configToken)))
3688                         {
3689                                 log(DEFAULT,"Warning: Failed to bind port %lu",(unsigned long)atoi(configToken));
3690                                 printf("Warning: Failed to bind port %lu\n",(unsigned long)atoi(configToken));
3691                         }
3692                         else
3693                         {
3694                                 serverportcount++;
3695                         }
3696                 }
3697                 else
3698                 {
3699                         ports[clientportcount] = atoi(configToken);
3700                         strlcpy(addrs[clientportcount],Addr,256);
3701                         clientportcount++;
3702                 }
3703                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
3704         }
3705         portCount = clientportcount;
3706         UDPportCount = serverportcount;
3707
3708         log(DEBUG,"InspIRCd: startup: read %lu total client ports and %lu total server ports",(unsigned long)portCount,(unsigned long)UDPportCount);
3709         log(DEBUG,"InspIRCd: startup: InspIRCd is now starting!");
3710
3711         printf("\n");
3712
3713         /* BugFix By Craig! :p */
3714         MODCOUNT = -1;
3715         for (count = 0; count < ConfValueEnum("module",&config_f); count++)
3716         {
3717                 ConfValue("module","name",count,configToken,&config_f);
3718                 printf("Loading module... \033[1;32m%s\033[0m\n",configToken);
3719                 if (!LoadModule(configToken))
3720                 {
3721                         log(DEFAULT,"Exiting due to a module loader error.");
3722                         printf("\nThere was an error loading a module: %s\n\nYou might want to do './inspircd start' instead of 'bin/inspircd'\n\n",ModuleError());
3723                         Exit(0);
3724                 }
3725         }
3726         log(DEFAULT,"Total loaded modules: %lu",(unsigned long)MODCOUNT+1);
3727
3728         startup_time = time(NULL);
3729
3730         char PID[MAXBUF];
3731         ConfValue("pid","file",0,PID,&config_f);
3732         // write once here, to try it out and make sure its ok
3733         WritePID(PID);
3734
3735         /* setup select call */
3736         FD_ZERO(&selectFds);
3737         log(DEBUG,"InspIRCd: startup: zero selects");
3738         log(VERBOSE,"InspIRCd: startup: portCount = %lu", (unsigned long)portCount);
3739
3740         for (count = 0; count < portCount; count++)
3741         {
3742                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
3743                 {
3744                         log(DEBUG,"InspIRCd: startup: bad fd %lu",(unsigned long)openSockfd[boundPortCount]);
3745                         return(ERROR);
3746                 }
3747                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
3748                 {
3749                         log(DEFAULT,"InspIRCd: startup: failed to bind port %lu",(unsigned long)ports[count]);
3750                 }
3751                 else    /* well we at least bound to one socket so we'll continue */
3752                 {
3753                         boundPortCount++;
3754                 }
3755         }
3756
3757         log(DEBUG,"InspIRCd: startup: total bound ports %lu",(unsigned long)boundPortCount);
3758
3759         /* if we didn't bind to anything then abort */
3760         if (boundPortCount == 0)
3761         {
3762                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
3763                 printf("\nERROR: Was not able to bind any of %lu ports! Please check your configuration.\n\n", (unsigned long)portCount);
3764                 return (ERROR);
3765         }
3766
3767
3768         printf("\nInspIRCd is now running!\n");
3769
3770         if (nofork)
3771         {
3772                 log(VERBOSE,"Not forking as -nofork was specified");
3773         }
3774         else
3775         {
3776                 if (DaemonSeed() == ERROR)
3777                 {
3778                         log(DEFAULT,"InspIRCd: startup: can't daemonise");
3779                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
3780                         Exit(ERROR);
3781                 }
3782         }
3783
3784         WritePID(PID);
3785
3786         length = sizeof (client);
3787         char udp_msg[MAXBUF],tcp_host[MAXBUF];
3788
3789         fd_set serverfds;
3790         timeval tvs;
3791         tvs.tv_usec = 10000L;
3792         tvs.tv_sec = 0;
3793         tv.tv_sec = 0;
3794         tv.tv_usec = 10000L;
3795         char data[10240];
3796         timeval tval;
3797         fd_set sfd;
3798         tval.tv_usec = 10000L;
3799         tval.tv_sec = 0;
3800         int total_in_this_set = 0;
3801         int v = 0;
3802         bool expire_run = false;
3803
3804         /* main loop, this never returns */
3805         for (;;)
3806         {
3807 #ifdef _POSIX_PRIORITY_SCHEDULING
3808                 sched_yield();
3809 #endif
3810                 // poll dns queue
3811                 dns_poll();
3812                 FD_ZERO(&sfd);
3813
3814                 // we only read time() once per iteration rather than tons of times!
3815                 TIME = time(NULL);
3816
3817                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
3818                 // them in a list, then reap the list every second or so.
3819                 if (((TIME % 5) == 0) && (!expire_run))
3820                 {
3821                         expire_lines();
3822                         FOREACH_MOD OnBackgroundTimer(TIME);
3823                         expire_run = true;
3824                         continue;
3825                 }
3826                 if ((TIME % 5) == 1)
3827                         expire_run = false;
3828
3829                 // fix by brain - this must be below any manipulation of the hashmap by modules
3830                 user_hash::iterator count2 = clientlist.begin();
3831
3832                 FD_ZERO(&serverfds);
3833
3834                 for (int x = 0; x != UDPportCount; x++)
3835                 {
3836                         if (me[x])
3837                                 FD_SET(me[x]->fd, &serverfds);
3838                 }
3839
3840                 // serverFds timevals went here
3841
3842                 tvs.tv_usec = 30000L;
3843                 tvs.tv_sec = 0;
3844                 int servresult = select(32767, &serverfds, NULL, NULL, &tvs);
3845                 if (servresult > 0)
3846                 {
3847                         for (int x = 0; x != UDPportCount; x++)
3848                         {
3849                                 if ((me[x]) && (FD_ISSET (me[x]->fd, &serverfds)))
3850                                 {
3851                                         char remotehost[MAXBUF],resolved[MAXBUF];
3852                                         length = sizeof (client);
3853                                         incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length);
3854                                         if (incomingSockfd != -1)
3855                                         {
3856                                                 strlcpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF);
3857                                                 if(CleanAndResolve(resolved, remotehost) != TRUE)
3858                                                 {
3859                                                         strlcpy(resolved,remotehost,MAXBUF);
3860                                                 }
3861                                                 // add to this connections ircd_connector vector
3862                                                 // *FIX* - we need the LOCAL port not the remote port in &client!
3863                                                 me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port);
3864                                         }
3865                                 }
3866                         }
3867                 }
3868
3869                 for (int x = 0; x < UDPportCount; x++)
3870                 {
3871                         std::deque<std::string> msgs;
3872                         msgs.clear();
3873                         if ((me[x]) && (me[x]->RecvPacket(msgs, tcp_host)))
3874                         {
3875                                 for (int ctr = 0; ctr < msgs.size(); ctr++)
3876                                 {
3877                                         strlcpy(udp_msg,msgs[ctr].c_str(),MAXBUF);
3878                                         log(DEBUG,"Processing: %s",udp_msg);
3879                                         if (!udp_msg[0])
3880                                         {
3881                                                 log(DEBUG,"Invalid string from %s [route%lu]",tcp_host,(unsigned long)x);
3882                                                 break;
3883                                         }
3884                                         // during a netburst, send all data to all other linked servers
3885                                         if ((((nb_start>0) && (udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))) || (is_uline(tcp_host)))
3886                                         {
3887                                                 if (is_uline(tcp_host))
3888                                                 {
3889                                                         if ((udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))
3890                                                         {
3891                                                                 NetSendToAllExcept(tcp_host,udp_msg);
3892                                                         }
3893                                                 }
3894                                                 else
3895                                                         NetSendToAllExcept(tcp_host,udp_msg);
3896                                         }
3897                                         std::string msg = udp_msg;
3898                                         FOREACH_MOD OnPacketReceive(msg,tcp_host);
3899                                         strlcpy(udp_msg,msg.c_str(),MAXBUF);
3900                                         handle_link_packet(udp_msg, tcp_host, me[x]);
3901                                 }
3902                                 goto label;
3903                         }
3904                 }
3905
3906
3907         while (count2 != clientlist.end())
3908         {
3909                 FD_ZERO(&sfd);
3910                 total_in_this_set = 0;
3911
3912                 user_hash::iterator xcount = count2;
3913                 user_hash::iterator endingiter = count2;
3914
3915                 if (count2 == clientlist.end()) break;
3916
3917                 if (count2->second)
3918                 if (count2->second->fd != 0)
3919                 {
3920                         // assemble up to 64 sockets into an fd_set
3921                         // to implement a pooling mechanism.
3922                         //
3923                         // This should be up to 64x faster than the
3924                         // old implementation.
3925                         while (total_in_this_set < 64)
3926                         {
3927                                 if (count2 != clientlist.end())
3928                                 {
3929                                         // we don't check the state of remote users.
3930                                         if ((count2->second->fd != -1) && (count2->second->fd != FD_MAGIC_NUMBER))
3931                                         {
3932                                                 FD_SET (count2->second->fd, &sfd);
3933
3934                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
3935                                                 // their connection class.
3936                                                 if ((TIME > count2->second->timeout) && (count2->second->registered != 7))
3937                                                 {
3938                                                         log(DEBUG,"InspIRCd: registration timeout: %s",count2->second->nick);
3939                                                         kill_link(count2->second,"Registration timeout");
3940                                                         goto label;
3941                                                 }
3942                                                 if ((TIME > count2->second->signon) && (count2->second->registered == 3) && (AllModulesReportReady(count2->second)))
3943                                                 {
3944                                                         log(DEBUG,"signon exceed, registered=3, and modules ready, OK");
3945                                                         count2->second->dns_done = true;
3946                                                         FullConnectUser(count2->second);
3947                                                         goto label;
3948                                                 }
3949                                                 if ((count2->second->dns_done) && (count2->second->registered == 3) && (AllModulesReportReady(count2->second))) // both NICK and USER... and DNS
3950                                                 {
3951                                                         log(DEBUG,"dns done, registered=3, and modules ready, OK");
3952                                                         FullConnectUser(count2->second);
3953                                                         goto label;
3954                                                 }
3955                                                 if ((TIME > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7))
3956                                                 {
3957                                                         if ((!count2->second->lastping) && (count2->second->registered == 7))
3958                                                         {
3959                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",count2->second->nick);
3960                                                                 kill_link(count2->second,"Ping timeout");
3961                                                                 goto label;
3962                                                         }
3963                                                         Write(count2->second->fd,"PING :%s",ServerName);
3964                                                         log(DEBUG,"InspIRCd: pinging: %s",count2->second->nick);
3965                                                         count2->second->lastping = 0;
3966                                                         count2->second->nping = TIME+count2->second->pingmax;   // was hard coded to 120
3967                                                 }
3968                                         }
3969                                         count2++;
3970                                         total_in_this_set++;
3971                                 }
3972                                 else break;
3973                         }
3974
3975                         endingiter = count2;
3976                         count2 = xcount; // roll back to where we were
3977
3978                         v = 0;
3979
3980                         // tvals defined here
3981
3982                         tval.tv_usec = 1000L;
3983                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
3984
3985                         // now loop through all of the items in this pool if any are waiting
3986                         //if (selectResult2 > 0)
3987                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
3988                         {
3989
3990 #ifdef _POSIX_PRIORITY_SCHEDULING
3991                                 sched_yield();
3992 #endif
3993
3994                                 result = EAGAIN;
3995                                 if ((count2a->second->fd != FD_MAGIC_NUMBER) && (count2a->second->fd != -1) && (FD_ISSET (count2a->second->fd, &sfd)))
3996                                 {
3997                                         memset(data, 0, 10240);
3998                                         result = read(count2a->second->fd, data, 10240);
3999
4000                                         if (result)
4001                                         {
4002                                                 // perform a check on the raw buffer as an array (not a string!) to remove
4003                                                 // characters 0 and 7 which are illegal in the RFC - replace them with spaces.
4004                                                 // hopefully this should stop even more people whining about "Unknown command: *"
4005                                                 for (int checker = 0; checker < result; checker++)
4006                                                 {
4007                                                         if ((data[checker] == 0) || (data[checker] == 7))
4008                                                                 data[checker] = ' ';
4009                                                 }
4010                                                 userrec* current = count2a->second;
4011                                                 int currfd = current->fd;
4012                                                 char* l = strtok(data,"\n");
4013                                                 int floodlines = 0;
4014                                                 while (l)
4015                                                 {
4016                                                         floodlines++;
4017                                                         if ((floodlines > current->flood) && (current->flood != 0))
4018                                                         {
4019                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4020                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4021                                                                 kill_link(current,"Excess flood");
4022                                                                 goto label;
4023                                                         }
4024                                                         char sanitized[NetBufferSize];
4025                                                         memset(sanitized, 0, NetBufferSize);
4026                                                         int ptt = 0;
4027                                                         for (int pt = 0; pt < strlen(l); pt++)
4028                                                         {
4029                                                                 if (l[pt] != '\r')
4030                                                                 {
4031                                                                         sanitized[ptt++] = l[pt];
4032                                                                 }
4033                                                         }
4034                                                         sanitized[ptt] = '\0';
4035                                                         if (*sanitized)
4036                                                         {
4037
4038
4039                                                                 // we're gonna re-scan to check if the nick is gone, after every
4040                                                                 // command - if it has, we're gonna bail
4041                                                                 bool find_again = false;
4042                                                                 process_buffer(sanitized,current);
4043
4044                                                                 // look for the user's record in case it's changed
4045                                                                 for (user_hash::iterator c2 = clientlist.begin(); c2 != clientlist.end(); c2++)
4046                                                                 {
4047                                                                         if (c2->second->fd == currfd)
4048                                                                         {
4049                                                                                 // found again, update pointer
4050                                                                                 current == c2->second;
4051                                                                                 find_again = true;
4052                                                                                 break;
4053                                                                         }
4054                                                                 }
4055                                                                 if (!find_again)
4056                                                                         goto label;
4057
4058                                                         }
4059                                                         l = strtok(NULL,"\n");
4060                                                 }
4061                                                 goto label;
4062                                         }
4063
4064                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
4065                                         {
4066                                                 log(DEBUG,"killing: %s",count2a->second->nick);
4067                                                 kill_link(count2a->second,strerror(errno));
4068                                                 goto label;
4069                                         }
4070                                 }
4071                                 // result EAGAIN means nothing read
4072                                 if (result == EAGAIN)
4073                                 {
4074                                 }
4075                                 else
4076                                 if (result == 0)
4077                                 {
4078                                         if (count2->second)
4079                                         {
4080                                                 log(DEBUG,"InspIRCd: Exited: %s",count2a->second->nick);
4081                                                 kill_link(count2a->second,"Client exited");
4082                                                 // must bail here? kill_link removes the hash, corrupting the iterator
4083                                                 log(DEBUG,"Bailing from client exit");
4084                                                 goto label;
4085                                         }
4086                                 }
4087                                 else if (result > 0)
4088                                 {
4089                                 }
4090                         }
4091                 }
4092                 for (int q = 0; q < total_in_this_set; q++)
4093                 {
4094                         count2++;
4095                 }
4096         }
4097
4098 #ifdef _POSIX_PRIORITY_SCHEDULING
4099         sched_yield();
4100 #endif
4101
4102         // set up select call
4103         for (count = 0; count < boundPortCount; count++)
4104         {
4105                 FD_SET (openSockfd[count], &selectFds);
4106         }
4107
4108         tv.tv_usec = 30000L;
4109         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
4110
4111         /* select is reporting a waiting socket. Poll them all to find out which */
4112         if (selectResult > 0)
4113         {
4114                 char target[MAXBUF], resolved[MAXBUF];
4115                 for (count = 0; count < boundPortCount; count++)
4116                 {
4117                         if (FD_ISSET (openSockfd[count], &selectFds))
4118                         {
4119                                 length = sizeof (client);
4120                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
4121
4122                                 strlcpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
4123                                 strlcpy (resolved, target, MAXBUF);
4124
4125                                 if (incomingSockfd < 0)
4126                                 {
4127                                         WriteOpers("*** WARNING: Accept failed on port %lu (%s)",(unsigned long)ports[count],target);
4128                                         log(DEBUG,"InspIRCd: accept failed: %lu",(unsigned long)ports[count]);
4129                                 }
4130                                 else
4131                                 {
4132                                         AddClient(incomingSockfd, resolved, ports[count], false, inet_ntoa (client.sin_addr));
4133                                         log(DEBUG,"InspIRCd: adding client on port %lu fd=%lu",(unsigned long)ports[count],(unsigned long)incomingSockfd);
4134                                 }
4135                                 goto label;
4136                         }
4137                 }
4138         }
4139         label:
4140         if (0) {};
4141 #ifdef _POSIX_PRIORITY_SCHEDULING
4142         sched_yield();
4143 #endif
4144 }
4145 /* not reached */
4146 close (incomingSockfd);
4147 }
4148