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                                 log(DEBUG,"WriteCommon: Sending to: (%d)%s",otheruser->fd,otheruser->nick);
 837                                 WriteFrom(otheruser->fd,u,"%s",textbuffer);
 838                         }
 839                 }
 840         }
 841 }
 842
 843 /* write a formatted string to all users who share at least one common
 844  * channel, NOT including the source user e.g. for use in QUIT */
 845
 846 void WriteCommonExcept(userrec *u, char* text, ...)
 847 {
 848         if (!u)
 849         {
 850                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 851                 return;
 852         }
 853
 854         if (u->registered != 7) {
 855                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 856                 return;
 857         }
 858
 859         char textbuffer[MAXBUF];
 860         va_list argsPtr;
 861         va_start (argsPtr, text);
 862         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 863         va_end(argsPtr);
 864
 865         for (int i = 0; i < MAXCHANS; i++)
 866         {
 867                 if (u->chans[i].channel)
 868                 {
 869                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 870                         for (int j = 0; j < ulist->size(); j++)
 871                         {
 872                                 char* o = (*ulist)[j];
 873                                 userrec* otheruser = (userrec*)o;
 874                                 if (u != otheruser)
 875                                         WriteFrom(otheruser->fd,u,"%s",textbuffer);
 876                         }
 877                 }
 878         }
 879 }
 880
 881 void WriteOpers(char* text, ...)
 882 {
 883         if (!text)
 884         {
 885                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 886                 return;
 887         }
 888
 889         char textbuffer[MAXBUF];
 890         va_list argsPtr;
 891         va_start (argsPtr, text);
 892         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 893         va_end(argsPtr);
 894
 895         for (std::vector<userrec*>::iterator i = all_opers.begin(); i != all_opers.end(); i++)
 896         {
 897                 userrec* a = *i;
 898                 if ((a) && (a->fd != FD_MAGIC_NUMBER))
 899                 {
 900                         if (strchr(a->modes,'s'))
 901                         {
 902                                 // send server notices to all with +s
 903                                 WriteServ(a->fd,"NOTICE %s :%s",a->nick,textbuffer);
 904                         }
 905                 }
 906         }
 907 }
 908
 909 // returns TRUE of any users on channel C occupy server 'servername'.
 910
 911 bool ChanAnyOnThisServer(chanrec *c,char* servername)
 912 {
 913         log(DEBUG,"ChanAnyOnThisServer");
 914
 915         std::vector<char*> *ulist = c->GetUsers();
 916         for (int j = 0; j < ulist->size(); j++)
 917         {
 918                 char* o = (*ulist)[j];
 919                 userrec* user = (userrec*)o;
 920                 if (!strcasecmp(user->server,servername))
 921                         return true;
 922         }
 923         return false;
 924 }
 925
 926 // returns true if user 'u' shares any common channels with any users on server 'servername'
 927
 928 bool CommonOnThisServer(userrec* u,const char* servername)
 929 {
 930         log(DEBUG,"ChanAnyOnThisServer");
 931
 932         for (int i = 0; i < MAXCHANS; i++)
 933         {
 934                 if (u->chans[i].channel)
 935                 {
 936                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 937                         for (int j = 0; j < ulist->size(); j++)
 938                         {
 939                                 char* o = (*ulist)[j];
 940                                 userrec* user = (userrec*)o;
 941                                 if (!strcasecmp(user->server,servername))
 942                                         return true;
 943                         }
 944                 }
 945         }
 946         return false;
 947 }
 948
 949
 950 void NetSendToCommon(userrec* u, char* s)
 951 {
 952         char buffer[MAXBUF];
 953         snprintf(buffer,MAXBUF,"%s",s);
 954
 955         log(DEBUG,"NetSendToCommon: '%s' '%s'",u->nick,s);
 956
 957         std::string msg = buffer;
 958         FOREACH_MOD OnPacketTransmit(msg,s);
 959         strlcpy(buffer,msg.c_str(),MAXBUF);
 960
 961         for (int j = 0; j < 32; j++)
 962         {
 963                 if (me[j] != NULL)
 964                 {
 965                         for (int k = 0; k < me[j]->connectors.size(); k++)
 966                         {
 967                                 if (CommonOnThisServer(u,me[j]->connectors[k].GetServerName().c_str()))
 968                                 {
 969                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 970                                 }
 971                         }
 972                 }
 973         }
 974 }
 975
 976
 977 void NetSendToAll(char* s)
 978 {
 979         char buffer[MAXBUF];
 980         snprintf(buffer,MAXBUF,"%s",s);
 981
 982         log(DEBUG,"NetSendToAll: '%s'",s);
 983
 984         std::string msg = buffer;
 985         FOREACH_MOD OnPacketTransmit(msg,s);
 986         strlcpy(buffer,msg.c_str(),MAXBUF);
 987
 988         for (int j = 0; j < 32; j++)
 989         {
 990                 if (me[j] != NULL)
 991                 {
 992                         for (int k = 0; k < me[j]->connectors.size(); k++)
 993                         {
 994                                 me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 995                         }
 996                 }
 997         }
 998 }
 999
1000 void NetSendToAllAlive(char* s)
1001 {
1002         char buffer[MAXBUF];
1003         snprintf(buffer,MAXBUF,"%s",s);
1004
1005         log(DEBUG,"NetSendToAllAlive: '%s'",s);
1006
1007         std::string msg = buffer;
1008         FOREACH_MOD OnPacketTransmit(msg,s);
1009         strlcpy(buffer,msg.c_str(),MAXBUF);
1010
1011         for (int j = 0; j < 32; j++)
1012         {
1013                 if (me[j] != NULL)
1014                 {
1015                         for (int k = 0; k < me[j]->connectors.size(); k++)
1016                         {
1017                                 if (me[j]->connectors[k].GetState() != STATE_DISCONNECTED)
1018                                 {
1019                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1020                                 }
1021                                 else
1022                                 {
1023                                         log(DEBUG,"%s is dead, not sending to it.",me[j]->connectors[k].GetServerName().c_str());
1024                                 }
1025                         }
1026                 }
1027         }
1028 }
1029
1030
1031 void NetSendToOne(char* target,char* s)
1032 {
1033         char buffer[MAXBUF];
1034         snprintf(buffer,MAXBUF,"%s",s);
1035
1036         log(DEBUG,"NetSendToOne: '%s' '%s'",target,s);
1037
1038         std::string msg = buffer;
1039         FOREACH_MOD OnPacketTransmit(msg,s);
1040         strlcpy(buffer,msg.c_str(),MAXBUF);
1041
1042         for (int j = 0; j < 32; j++)
1043         {
1044                 if (me[j] != NULL)
1045                 {
1046                         for (int k = 0; k < me[j]->connectors.size(); k++)
1047                         {
1048                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1049                                 {
1050                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1051                                 }
1052                         }
1053                 }
1054         }
1055 }
1056
1057 void NetSendToAllExcept(const char* target,char* s)
1058 {
1059         char buffer[MAXBUF];
1060         snprintf(buffer,MAXBUF,"%s",s);
1061
1062         log(DEBUG,"NetSendToAllExcept: '%s' '%s'",target,s);
1063
1064         std::string msg = buffer;
1065         FOREACH_MOD OnPacketTransmit(msg,s);
1066         strlcpy(buffer,msg.c_str(),MAXBUF);
1067
1068         for (int j = 0; j < 32; j++)
1069         {
1070                 if (me[j] != NULL)
1071                 {
1072                         for (int k = 0; k < me[j]->connectors.size(); k++)
1073                         {
1074                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1075                                 {
1076                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1077                                 }
1078                         }
1079                 }
1080         }
1081 }
1082
1083
1084 void WriteMode(const char* modes, int flags, const char* text, ...)
1085 {
1086         if ((!text) || (!modes) || (!flags))
1087         {
1088                 log(DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
1089                 return;
1090         }
1091
1092         char textbuffer[MAXBUF];
1093         va_list argsPtr;
1094         va_start (argsPtr, text);
1095         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1096         va_end(argsPtr);
1097         int modelen = strlen(modes);
1098
1099         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1100         {
1101                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1102                 {
1103                         bool send_to_user = false;
1104
1105                         if (flags == WM_AND)
1106                         {
1107                                 send_to_user = true;
1108                                 for (int n = 0; n < modelen; n++)
1109                                 {
1110                                         if (!hasumode(i->second,modes[n]))
1111                                         {
1112                                                 send_to_user = false;
1113                                                 break;
1114                                         }
1115                                 }
1116                         }
1117                         else if (flags == WM_OR)
1118                         {
1119                                 send_to_user = false;
1120                                 for (int n = 0; n < modelen; n++)
1121                                 {
1122                                         if (hasumode(i->second,modes[n]))
1123                                         {
1124                                                 send_to_user = true;
1125                                                 break;
1126                                         }
1127                                 }
1128                         }
1129
1130                         if (send_to_user)
1131                         {
1132                                 WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
1133                         }
1134                 }
1135         }
1136 }
1137
1138
1139 void WriteWallOps(userrec *source, bool local_only, char* text, ...)
1140 {
1141         if ((!text) || (!source))
1142         {
1143                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
1144                 return;
1145         }
1146
1147         char textbuffer[MAXBUF];
1148         va_list argsPtr;
1149         va_start (argsPtr, text);
1150         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1151         va_end(argsPtr);
1152
1153         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1154         {
1155                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1156                 {
1157                         if (strchr(i->second->modes,'w'))
1158                         {
1159                                 WriteTo(source,i->second,"WALLOPS :%s",textbuffer);
1160                         }
1161                 }
1162         }
1163
1164         if (!local_only)
1165         {
1166                 char buffer[MAXBUF];
1167                 snprintf(buffer,MAXBUF,"@ %s :%s",source->nick,textbuffer);
1168                 NetSendToAll(buffer);
1169         }
1170 }
1171
1172 /* convert a string to lowercase. Note following special circumstances
1173  * taken from RFC 1459. Many "official" server branches still hold to this
1174  * rule so i will too;
1175  *
1176  *  Because of IRC's scandanavian origin, the characters {}| are
1177  *  considered to be the lower case equivalents of the characters []\,
1178  *  respectively. This is a critical issue when determining the
1179  *  equivalence of two nicknames.
1180  */
1181
1182 void strlower(char *n)
1183 {
1184         if (!n)
1185         {
1186                 return;
1187         }
1188         for (int i = 0; n[i] != 0; i++)
1189         {
1190                 n[i] = tolower(n[i]);
1191                 if (n[i] == '[')
1192                         n[i] = '{';
1193                 if (n[i] == ']')
1194                         n[i] = '}';
1195                 if (n[i] == '\\')
1196                         n[i] = '|';
1197         }
1198 }
1199
1200
1201
1202 /* Find a user record by nickname and return a pointer to it */
1203
1204 userrec* Find(std::string nick)
1205 {
1206         user_hash::iterator iter = clientlist.find(nick);
1207
1208         if (iter == clientlist.end())
1209                 /* Couldn't find it */
1210                 return NULL;
1211
1212         return iter->second;
1213 }
1214
1215 /* find a channel record by channel name and return a pointer to it */
1216
1217 chanrec* FindChan(const char* chan)
1218 {
1219         if (!chan)
1220         {
1221                 log(DEFAULT,"*** BUG *** Findchan was given an invalid parameter");
1222                 return NULL;
1223         }
1224
1225         chan_hash::iterator iter = chanlist.find(chan);
1226
1227         if (iter == chanlist.end())
1228                 /* Couldn't find it */
1229                 return NULL;
1230
1231         return iter->second;
1232 }
1233
1234
1235 long GetMaxBans(char* name)
1236 {
1237         char CM[MAXBUF];
1238         for (int count = 0; count < ConfValueEnum("banlist",&config_f); count++)
1239         {
1240                 ConfValue("banlist","chan",count,CM,&config_f);
1241                 if (match(name,CM))
1242                 {
1243                         ConfValue("banlist","limit",count,CM,&config_f);
1244                         return atoi(CM);
1245                 }
1246         }
1247         return 64;
1248 }
1249
1250
1251 void purge_empty_chans(userrec* u)
1252 {
1253
1254         int go_again = 1, purge = 0;
1255
1256         // firstly decrement the count on each channel
1257         for (int f = 0; f < MAXCHANS; f++)
1258         {
1259                 if (u->chans[f].channel)
1260                 {
1261                         u->chans[f].channel->DecUserCounter();
1262                         u->chans[f].channel->DelUser((char*)u);
1263                 }
1264         }
1265
1266         for (int i = 0; i < MAXCHANS; i++)
1267         {
1268                 if (u->chans[i].channel)
1269                 {
1270                         if (!usercount(u->chans[i].channel))
1271                         {
1272                                 chan_hash::iterator i2 = chanlist.find(u->chans[i].channel->name);
1273                                 /* kill the record */
1274                                 if (i2 != chanlist.end())
1275                                 {
1276                                         log(DEBUG,"del_channel: destroyed: %s",i2->second->name);
1277                                         if (i2->second)
1278                                                 delete i2->second;
1279                                         chanlist.erase(i2);
1280                                         go_again = 1;
1281                                         purge++;
1282                                         u->chans[i].channel = NULL;
1283                                 }
1284                         }
1285                         else
1286                         {
1287                                 log(DEBUG,"skipped purge for %s",u->chans[i].channel->name);
1288                         }
1289                 }
1290         }
1291         log(DEBUG,"completed channel purge, killed %lu",(unsigned long)purge);
1292
1293         DeleteOper(u);
1294 }
1295
1296
1297 char scratch[MAXBUF];
1298 char sparam[MAXBUF];
1299
1300 char* chanmodes(chanrec *chan)
1301 {
1302         if (!chan)
1303         {
1304                 log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
1305                 strcpy(scratch,"");
1306                 return scratch;
1307         }
1308
1309         strcpy(scratch,"");
1310         strcpy(sparam,"");
1311         if (chan->noexternal)
1312         {
1313                 strlcat(scratch,"n",MAXMODES);
1314         }
1315         if (chan->topiclock)
1316         {
1317                 strlcat(scratch,"t",MAXMODES);
1318         }
1319         if (chan->key[0])
1320         {
1321                 strlcat(scratch,"k",MAXMODES);
1322         }
1323         if (chan->limit)
1324         {
1325                 strlcat(scratch,"l",MAXMODES);
1326         }
1327         if (chan->inviteonly)
1328         {
1329                 strlcat(scratch,"i",MAXMODES);
1330         }
1331         if (chan->moderated)
1332         {
1333                 strlcat(scratch,"m",MAXMODES);
1334         }
1335         if (chan->secret)
1336         {
1337                 strlcat(scratch,"s",MAXMODES);
1338         }
1339         if (chan->c_private)
1340         {
1341                 strlcat(scratch,"p",MAXMODES);
1342         }
1343         if (chan->key[0])
1344         {
1345                 strlcat(sparam," ",MAXBUF);
1346                 strlcat(sparam,chan->key,MAXBUF);
1347         }
1348         if (chan->limit)
1349         {
1350                 char foo[24];
1351                 sprintf(foo," %lu",(unsigned long)chan->limit);
1352                 strlcat(sparam,foo,MAXBUF);
1353         }
1354         if (*chan->custom_modes)
1355         {
1356                 strlcat(scratch,chan->custom_modes,MAXMODES);
1357                 for (int z = 0; chan->custom_modes[z] != 0; z++)
1358                 {
1359                         std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
1360                         if (extparam != "")
1361                         {
1362                                 strlcat(sparam," ",MAXBUF);
1363                                 strlcat(sparam,extparam.c_str(),MAXBUF);
1364                         }
1365                 }
1366         }
1367         log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam);
1368         strlcat(scratch,sparam,MAXMODES);
1369         return scratch;
1370 }
1371
1372
1373 /* compile a userlist of a channel into a string, each nick seperated by
1374  * spaces and op, voice etc status shown as @ and + */
1375
1376 void userlist(userrec *user,chanrec *c)
1377 {
1378         if ((!c) || (!user))
1379         {
1380                 log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
1381                 return;
1382         }
1383
1384         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1385         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1386         {
1387                 if (has_channel(i->second,c))
1388                 {
1389                         if (isnick(i->second->nick))
1390                         {
1391                                 if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1392                                 {
1393                                         /* user is +i, and source not on the channel, does not show
1394                                          * nick in NAMES list */
1395                                         continue;
1396                                 }
1397                                 strlcat(list,cmode(i->second,c),MAXBUF);
1398                                 strlcat(list,i->second->nick,MAXBUF);
1399                                 strlcat(list," ",MAXBUF);
1400                                 if (strlen(list)>(480-NICKMAX))
1401                                 {
1402                                         /* list overflowed into
1403                                          * multiple numerics */
1404                                         WriteServ(user->fd,"%s",list);
1405                                         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1406                                 }
1407                         }
1408                 }
1409         }
1410         /* if whats left in the list isnt empty, send it */     if (list[strlen(list)-1] != ':')
1411         {
1412                 WriteServ(user->fd,"%s",list);
1413         }
1414 }
1415
1416 /* return a count of the users on a specific channel accounting for
1417  * invisible users who won't increase the count. e.g. for /LIST */
1418
1419 int usercount_i(chanrec *c)
1420 {
1421         int count = 0;
1422
1423         if (!c)
1424         {
1425                 log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
1426                 return 0;
1427         }
1428
1429         strcpy(list,"");
1430         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1431         {
1432                 if (i->second)
1433                 {
1434                         if (has_channel(i->second,c))
1435                         {
1436                                 if (isnick(i->second->nick))
1437                                 {
1438                                         if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1439                                         {
1440                                                 /* user is +i, and source not on the channel, does not show
1441                                                  * nick in NAMES list */
1442                                                 continue;
1443                                         }
1444                                         count++;
1445                                 }
1446                         }
1447                 }
1448         }
1449         log(DEBUG,"usercount_i: %s %lu",c->name,(unsigned long)count);
1450         return count;
1451 }
1452
1453
1454 int usercount(chanrec *c)
1455 {
1456         if (!c)
1457         {
1458                 log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
1459                 return 0;
1460         }
1461         int count = c->GetUserCounter();
1462         log(DEBUG,"usercount: %s %lu",c->name,(unsigned long)count);
1463         return count;
1464 }
1465
1466
1467 /* add a channel to a user, creating the record for it if needed and linking
1468  * it to the user record */
1469
1470 chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
1471 {
1472         if ((!user) || (!cn))
1473         {
1474                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
1475                 return 0;
1476         }
1477
1478         chanrec* Ptr;
1479         int created = 0;
1480         char cname[MAXBUF];
1481
1482         strncpy(cname,cn,MAXBUF);
1483
1484         // we MUST declare this wherever we use FOREACH_RESULT
1485         int MOD_RESULT = 0;
1486
1487         if (strlen(cname) > CHANMAX-1)
1488         {
1489                 cname[CHANMAX-1] = '\0';
1490         }
1491
1492         log(DEBUG,"add_channel: %s %s",user->nick,cname);
1493
1494         if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
1495         {
1496                 return NULL; // already on the channel!
1497         }
1498
1499
1500         if (!FindChan(cname))
1501         {
1502                 MOD_RESULT = 0;
1503                 FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
1504                 if (MOD_RESULT == 1) {
1505                         return NULL;
1506                 }
1507
1508                 /* create a new one */
1509                 log(DEBUG,"add_channel: creating: %s",cname);
1510                 {
1511                         chanlist[cname] = new chanrec();
1512
1513                         strlcpy(chanlist[cname]->name, cname,CHANMAX);
1514                         chanlist[cname]->topiclock = 1;
1515                         chanlist[cname]->noexternal = 1;
1516                         chanlist[cname]->created = TIME;
1517                         strcpy(chanlist[cname]->topic, "");
1518                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
1519                         chanlist[cname]->topicset = 0;
1520                         Ptr = chanlist[cname];
1521                         log(DEBUG,"add_channel: created: %s",cname);
1522                         /* set created to 2 to indicate user
1523                          * is the first in the channel
1524                          * and should be given ops */
1525                         created = 2;
1526                 }
1527         }
1528         else
1529         {
1530                 /* channel exists, just fish out a pointer to its struct */
1531                 Ptr = FindChan(cname);
1532                 if (Ptr)
1533                 {
1534                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
1535
1536                         // the override flag allows us to bypass channel modes
1537                         // and bans (used by servers)
1538                         if ((!override) || (!strcasecmp(user->server,ServerName)))
1539                         {
1540                                 log(DEBUG,"Not overriding...");
1541                                 MOD_RESULT = 0;
1542                                 FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
1543                                 if (MOD_RESULT == 1) {
1544                                         return NULL;
1545                                 }
1546                                 log(DEBUG,"MOD_RESULT=%d",MOD_RESULT);
1547
1548                                 if (!MOD_RESULT)
1549                                 {
1550                                         log(DEBUG,"add_channel: checking key, invite, etc");
1551                                         MOD_RESULT = 0;
1552                                         FOREACH_RESULT(OnCheckKey(user, Ptr, key ? key : ""));
1553                                         if (MOD_RESULT == 0)
1554                                         {
1555                                                 if (Ptr->key[0])
1556                                                 {
1557                                                         log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
1558                                                         if (!key)
1559                                                         {
1560                                                                 log(DEBUG,"add_channel: no key given in JOIN");
1561                                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
1562                                                                 return NULL;
1563                                                         }
1564                                                         else
1565                                                         {
1566                                                                 if (strcasecmp(key,Ptr->key))
1567                                                                 {
1568                                                                         log(DEBUG,"add_channel: bad key given in JOIN");
1569                                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
1570                                                                         return NULL;
1571                                                                 }
1572                                                         }
1573                                                 }
1574                                                 log(DEBUG,"add_channel: no key");
1575                                         }
1576                                         MOD_RESULT = 0;
1577                                         FOREACH_RESULT(OnCheckInvite(user, Ptr));
1578                                         if (MOD_RESULT == 0)
1579                                         {
1580                                                 if (Ptr->inviteonly)
1581                                                 {
1582                                                         log(DEBUG,"add_channel: channel is +i");
1583                                                         if (user->IsInvited(Ptr->name))
1584                                                         {
1585                                                                 /* user was invited to channel */
1586                                                                 /* there may be an optional channel NOTICE here */
1587                                                         }
1588                                                         else
1589                                                         {
1590                                                                 WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
1591                                                                 return NULL;
1592                                                         }
1593                                                 }
1594                                                 log(DEBUG,"add_channel: channel is not +i");
1595                                         }
1596                                         MOD_RESULT = 0;
1597                                         FOREACH_RESULT(OnCheckLimit(user, Ptr));
1598                                         if (MOD_RESULT == 0)
1599                                         {
1600                                                 if (Ptr->limit)
1601                                                 {
1602                                                         if (usercount(Ptr) >= Ptr->limit)
1603                                                         {
1604                                                                 WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
1605                                                                 return NULL;
1606                                                         }
1607                                                 }
1608                                         }
1609                                         log(DEBUG,"add_channel: about to walk banlist");
1610                                         MOD_RESULT = 0;
1611                                         FOREACH_RESULT(OnCheckBan(user, Ptr));
1612                                         if (MOD_RESULT == 0)
1613                                         {
1614                                                 /* check user against the channel banlist */
1615                                                 if (Ptr)
1616                                                 {
1617                                                         if (Ptr->bans.size())
1618                                                         {
1619                                                                 for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1620                                                                 {
1621                                                                         if (match(user->GetFullHost(),i->data))
1622                                                                         {
1623                                                                                 WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
1624                                                                                 return NULL;
1625                                                                         }
1626                                                                 }
1627                                                         }
1628                                                 }
1629                                                 log(DEBUG,"add_channel: bans checked");
1630                                         }
1631
1632                                 }
1633
1634
1635                                 if ((Ptr) && (user))
1636                                 {
1637                                         user->RemoveInvite(Ptr->name);
1638                                 }
1639
1640                                 log(DEBUG,"add_channel: invites removed");
1641
1642                         }
1643                         else
1644                         {
1645                                 log(DEBUG,"Overridden checks");
1646                         }
1647
1648
1649                 }
1650                 created = 1;
1651         }
1652
1653         log(DEBUG,"Passed channel checks");
1654
1655         for (int index =0; index != MAXCHANS; index++)
1656         {
1657                 log(DEBUG,"Check location %d",index);
1658                 if (user->chans[index].channel == NULL)
1659                 {
1660                         log(DEBUG,"Adding into their channel list at location %d",index);
1661
1662                         if (created == 2)
1663                         {
1664                                 /* first user in is given ops */
1665                                 user->chans[index].uc_modes = UCMODE_OP;
1666                         }
1667                         else
1668                         {
1669                                 user->chans[index].uc_modes = 0;
1670                         }
1671                         user->chans[index].channel = Ptr;
1672                         Ptr->IncUserCounter();
1673                         Ptr->AddUser((char*)user);
1674                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
1675
1676                         if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it.
1677                         {
1678                                 // use the stamdard J token with no privilages.
1679                                 char buffer[MAXBUF];
1680                                 if (created == 2)
1681                                 {
1682                                         snprintf(buffer,MAXBUF,"J %s @%s",user->nick,Ptr->name);
1683                                 }
1684                                 else
1685                                 {
1686                                         snprintf(buffer,MAXBUF,"J %s %s",user->nick,Ptr->name);
1687                                 }
1688                                 NetSendToAll(buffer);
1689                         }
1690
1691                         log(DEBUG,"Sent JOIN to client");
1692
1693                         if (Ptr->topicset)
1694                         {
1695                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
1696                                 WriteServ(user->fd,"333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
1697                         }
1698                         userlist(user,Ptr);
1699                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
1700                         //WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
1701                         //WriteServ(user->fd,"329 %s %s %lu", user->nick, Ptr->name, (unsigned long)Ptr->created);
1702                         FOREACH_MOD OnUserJoin(user,Ptr);
1703                         return Ptr;
1704                 }
1705         }
1706         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
1707         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
1708         return NULL;
1709 }
1710
1711 /* remove a channel from a users record, and remove the record from memory
1712  * if the channel has become empty */
1713
1714 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
1715 {
1716         if ((!user) || (!cname))
1717         {
1718                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
1719                 return NULL;
1720         }
1721
1722         chanrec* Ptr;
1723
1724         if ((!cname) || (!user))
1725         {
1726                 return NULL;
1727         }
1728
1729         Ptr = FindChan(cname);
1730
1731         if (!Ptr)
1732         {
1733                 return NULL;
1734         }
1735
1736         FOREACH_MOD OnUserPart(user,Ptr);
1737         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
1738
1739         for (int i =0; i != MAXCHANS; i++)
1740         {
1741                 /* zap it from the channel list of the user */
1742                 if (user->chans[i].channel == Ptr)
1743                 {
1744                         if (reason)
1745                         {
1746                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
1747
1748                                 if (!local)
1749                                 {
1750                                         char buffer[MAXBUF];
1751                                         snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason);
1752                                         NetSendToAll(buffer);
1753                                 }
1754
1755
1756                         }
1757                         else
1758                         {
1759                                 if (!local)
1760                                 {
1761                                         char buffer[MAXBUF];
1762                                         snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name);
1763                                         NetSendToAll(buffer);
1764                                 }
1765
1766                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
1767                         }
1768                         user->chans[i].uc_modes = 0;
1769                         user->chans[i].channel = NULL;
1770                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1771                         break;
1772                 }
1773         }
1774
1775         Ptr->DecUserCounter();
1776         Ptr->DelUser((char*)user);
1777
1778         /* if there are no users left on the channel */
1779         if (!usercount(Ptr))
1780         {
1781                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1782
1783                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1784
1785                 /* kill the record */
1786                 if (iter != chanlist.end())
1787                 {
1788                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1789                         if (iter->second) delete iter->second;
1790                         chanlist.erase(iter);
1791                 }
1792         }
1793 }
1794
1795
1796 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
1797 {
1798         if ((!src) || (!user) || (!Ptr) || (!reason))
1799         {
1800                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
1801                 return;
1802         }
1803
1804         if ((!Ptr) || (!user) || (!src))
1805         {
1806                 return;
1807         }
1808
1809         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
1810
1811         if (!has_channel(user,Ptr))
1812         {
1813                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
1814                 return;
1815         }
1816
1817         int MOD_RESULT = 0;
1818         FOREACH_RESULT(OnAccessCheck(src,user,Ptr,AC_KICK));
1819         if (MOD_RESULT == ACR_DENY)
1820                 return;
1821
1822         if (MOD_RESULT == ACR_DEFAULT)
1823         {
1824                 if (((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) && (!is_uline(src->server)))
1825                 {
1826                         if (cstatus(src,Ptr) == STATUS_HOP)
1827                         {
1828                                 WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
1829                         }
1830                         else
1831                         {
1832                                 WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
1833                         }
1834
1835                         return;
1836                 }
1837         }
1838
1839         MOD_RESULT = 0;
1840         FOREACH_RESULT(OnUserPreKick(src,user,Ptr,reason));
1841         if (MOD_RESULT)
1842                 return;
1843
1844         FOREACH_MOD OnUserKick(src,user,Ptr,reason);
1845
1846         for (int i =0; i != MAXCHANS; i++)
1847         {
1848                 /* zap it from the channel list of the user */
1849                 if (user->chans[i].channel)
1850                 if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
1851                 {
1852                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
1853                         user->chans[i].uc_modes = 0;
1854                         user->chans[i].channel = NULL;
1855                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1856                         break;
1857                 }
1858         }
1859
1860         Ptr->DecUserCounter();
1861         Ptr->DelUser((char*)user);
1862
1863         /* if there are no users left on the channel */
1864         if (!usercount(Ptr))
1865         {
1866                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1867
1868                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1869
1870                 /* kill the record */
1871                 if (iter != chanlist.end())
1872                 {
1873                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1874                         if (iter->second) delete iter->second;
1875                         chanlist.erase(iter);
1876                 }
1877         }
1878 }
1879
1880
1881
1882
1883 /* This function pokes and hacks at a parameter list like the following:
1884  *
1885  * PART #winbot,#darkgalaxy :m00!
1886  *
1887  * to turn it into a series of individual calls like this:
1888  *
1889  * PART #winbot :m00!
1890  * PART #darkgalaxy :m00!
1891  *
1892  * The seperate calls are sent to a callback function provided by the caller
1893  * (the caller will usually call itself recursively). The callback function
1894  * must be a command handler. Calling this function on a line with no list causes
1895  * no action to be taken. You must provide a starting and ending parameter number
1896  * where the range of the list can be found, useful if you have a terminating
1897  * parameter as above which is actually not part of the list, or parameters
1898  * before the actual list as well. This code is used by many functions which
1899  * can function as "one to list" (see the RFC) */
1900
1901 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
1902 {
1903         char plist[MAXBUF];
1904         char *param;
1905         char *pars[32];
1906         char blog[32][MAXBUF];
1907         char blog2[32][MAXBUF];
1908         int j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
1909         char keystr[MAXBUF];
1910         char moo[MAXBUF];
1911
1912         for (int i = 0; i <32; i++)
1913                 strcpy(blog[i],"");
1914
1915         for (int i = 0; i <32; i++)
1916                 strcpy(blog2[i],"");
1917
1918         strcpy(moo,"");
1919         for (int i = 0; i <10; i++)
1920         {
1921                 if (!parameters[i])
1922                 {
1923                         parameters[i] = moo;
1924                 }
1925         }
1926         if (joins)
1927         {
1928                 if (pcnt > 1) /* we have a key to copy */
1929                 {
1930                         strlcpy(keystr,parameters[1],MAXBUF);
1931                 }
1932         }
1933
1934         if (!parameters[start])
1935         {
1936                 return 0;
1937         }
1938         if (!strchr(parameters[start],','))
1939         {
1940                 return 0;
1941         }
1942         strcpy(plist,"");
1943         for (int i = start; i <= end; i++)
1944         {
1945                 if (parameters[i])
1946                 {
1947                         strlcat(plist,parameters[i],MAXBUF);
1948                 }
1949         }
1950
1951         j = 0;
1952         param = plist;
1953
1954         t = strlen(plist);
1955         for (int i = 0; i < t; i++)
1956         {
1957                 if (plist[i] == ',')
1958                 {
1959                         plist[i] = '\0';
1960                         strlcpy(blog[j++],param,MAXBUF);
1961                         param = plist+i+1;
1962                         if (j>20)
1963                         {
1964                                 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
1965                                 return 1;
1966                         }
1967                 }
1968         }
1969         strlcpy(blog[j++],param,MAXBUF);
1970         total = j;
1971
1972         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
1973         {
1974                 strcat(keystr,",");
1975         }
1976
1977         if ((joins) && (keystr))
1978         {
1979                 if (strchr(keystr,','))
1980                 {
1981                         j = 0;
1982                         param = keystr;
1983                         t2 = strlen(keystr);
1984                         for (int i = 0; i < t2; i++)
1985                         {
1986                                 if (keystr[i] == ',')
1987                                 {
1988                                         keystr[i] = '\0';
1989                                         strlcpy(blog2[j++],param,MAXBUF);
1990                                         param = keystr+i+1;
1991                                 }
1992                         }
1993                         strlcpy(blog2[j++],param,MAXBUF);
1994                         total2 = j;
1995                 }
1996         }
1997
1998         for (j = 0; j < total; j++)
1999         {
2000                 if (blog[j])
2001                 {
2002                         pars[0] = blog[j];
2003                 }
2004                 for (q = end; q < pcnt-1; q++)
2005                 {
2006                         if (parameters[q+1])
2007                         {
2008                                 pars[q-end+1] = parameters[q+1];
2009                         }
2010                 }
2011                 if ((joins) && (parameters[1]))
2012                 {
2013                         if (pcnt > 1)
2014                         {
2015                                 pars[1] = blog2[j];
2016                         }
2017                         else
2018                         {
2019                                 pars[1] = NULL;
2020                         }
2021                 }
2022                 /* repeatedly call the function with the hacked parameter list */
2023                 if ((joins) && (pcnt > 1))
2024                 {
2025                         if (pars[1])
2026                         {
2027                                 // pars[1] already set up and containing key from blog2[j]
2028                                 fn(pars,2,u);
2029                         }
2030                         else
2031                         {
2032                                 pars[1] = parameters[1];
2033                                 fn(pars,2,u);
2034                         }
2035                 }
2036                 else
2037                 {
2038                         fn(pars,pcnt-(end-start),u);
2039                 }
2040         }
2041
2042         return 1;
2043 }
2044
2045
2046
2047 void kill_link(userrec *user,const char* r)
2048 {
2049         user_hash::iterator iter = clientlist.find(user->nick);
2050
2051         char reason[MAXBUF];
2052
2053         strncpy(reason,r,MAXBUF);
2054
2055         if (strlen(reason)>MAXQUIT)
2056         {
2057                 reason[MAXQUIT-1] = '\0';
2058         }
2059
2060         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2061         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2062         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
2063
2064         /* bugfix, cant close() a nonblocking socket (sux!) */
2065         if (user->registered == 7) {
2066                 FOREACH_MOD OnUserQuit(user);
2067                 WriteCommonExcept(user,"QUIT :%s",reason);
2068
2069                 // Q token must go to ALL servers!!!
2070                 char buffer[MAXBUF];
2071                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2072                 NetSendToAll(buffer);
2073         }
2074
2075         FOREACH_MOD OnUserDisconnect(user);
2076
2077         if (user->fd > -1)
2078         {
2079                 shutdown(user->fd,2);
2080                 close(user->fd);
2081         }
2082
2083         if (user->registered == 7) {
2084                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
2085                 AddWhoWas(user);
2086         }
2087
2088         if (user->registered == 7) {
2089                 purge_empty_chans(user);
2090         }
2091
2092         if (iter != clientlist.end())
2093         {
2094                 log(DEBUG,"deleting user hash value %lu",(unsigned long)iter->second);
2095                 if ((iter->second) && (user->registered == 7)) {
2096                         if (iter->second) delete iter->second;
2097                 }
2098                 clientlist.erase(iter);
2099         }
2100 }
2101
2102 void kill_link_silent(userrec *user,const char* r)
2103 {
2104         user_hash::iterator iter = clientlist.find(user->nick);
2105
2106         char reason[MAXBUF];
2107
2108         strncpy(reason,r,MAXBUF);
2109
2110         if (strlen(reason)>MAXQUIT)
2111         {
2112                 reason[MAXQUIT-1] = '\0';
2113         }
2114
2115         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2116         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2117         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
2118
2119         /* bugfix, cant close() a nonblocking socket (sux!) */
2120         if (user->registered == 7) {
2121                 FOREACH_MOD OnUserQuit(user);
2122                 WriteCommonExcept(user,"QUIT :%s",reason);
2123
2124                 // Q token must go to ALL servers!!!
2125                 char buffer[MAXBUF];
2126                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2127                 NetSendToAll(buffer);
2128         }
2129
2130         FOREACH_MOD OnUserDisconnect(user);
2131
2132         if (user->fd > -1)
2133         {
2134                 shutdown(user->fd,2);
2135                 close(user->fd);
2136         }
2137
2138         if (user->registered == 7) {
2139                 purge_empty_chans(user);
2140         }
2141
2142         if (iter != clientlist.end())
2143         {
2144                 log(DEBUG,"deleting user hash value %lu",(unsigned long)iter->second);
2145                 if ((iter->second) && (user->registered == 7)) {
2146                         if (iter->second) delete iter->second;
2147                 }
2148                 clientlist.erase(iter);
2149         }
2150 }
2151
2152
2153
2154 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
2155
2156 char* Passwd(userrec *user)
2157 {
2158         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2159         {
2160                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
2161                 {
2162                         return i->pass;
2163                 }
2164         }
2165         return "";
2166 }
2167
2168 bool IsDenied(userrec *user)
2169 {
2170         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2171         {
2172                 if (match(user->host,i->host) && (i->type == CC_DENY))
2173                 {
2174                         return true;
2175                 }
2176         }
2177         return false;
2178 }
2179
2180
2181
2182
2183 /* sends out an error notice to all connected clients (not to be used
2184  * lightly!) */
2185
2186 void send_error(char *s)
2187 {
2188         log(DEBUG,"send_error: %s",s);
2189         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2190         {
2191                 if (isnick(i->second->nick))
2192                 {
2193                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
2194                 }
2195                 else
2196                 {
2197                         // fix - unregistered connections receive ERROR, not NOTICE
2198                         Write(i->second->fd,"ERROR :%s",s);
2199                 }
2200         }
2201 }
2202
2203 void Error(int status)
2204 {
2205         signal (SIGALRM, SIG_IGN);
2206         signal (SIGPIPE, SIG_IGN);
2207         signal (SIGTERM, SIG_IGN);
2208         signal (SIGABRT, SIG_IGN);
2209         signal (SIGSEGV, SIG_IGN);
2210         signal (SIGURG, SIG_IGN);
2211         signal (SIGKILL, SIG_IGN);
2212         log(DEFAULT,"*** fell down a pothole in the road to perfection ***");
2213         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
2214         Exit(status);
2215 }
2216
2217
2218 int main(int argc, char **argv)
2219 {
2220         Start();
2221         srand(time(NULL));
2222         log(DEBUG,"*** InspIRCd starting up!");
2223         if (!FileExists(CONFIG_FILE))
2224         {
2225                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
2226                 log(DEFAULT,"main: no config");
2227                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
2228                 Exit(ERROR);
2229         }
2230         if (argc > 1) {
2231                 for (int i = 1; i < argc; i++)
2232                 {
2233                         if (!strcmp(argv[i],"-nofork")) {
2234                                 nofork = true;
2235                         }
2236                         if (!strcmp(argv[i],"-wait")) {
2237                                 sleep(6);
2238                         }
2239                         if (!strcmp(argv[i],"-nolimit")) {
2240                                 unlimitcore = true;
2241                         }
2242                 }
2243         }
2244         strlcpy(MyExecutable,argv[0],MAXBUF);
2245
2246         if (InspIRCd() == ERROR)
2247         {
2248                 log(DEFAULT,"main: daemon function bailed");
2249                 printf("ERROR: could not initialise. Shutting down.\n");
2250                 Exit(ERROR);
2251         }
2252         Exit(TRUE);
2253         return 0;
2254 }
2255
2256 template<typename T> inline string ConvToStr(const T &in)
2257 {
2258         stringstream tmp;
2259         if (!(tmp << in)) return string();
2260         return tmp.str();
2261 }
2262
2263 /* re-allocates a nick in the user_hash after they change nicknames,
2264  * returns a pointer to the new user as it may have moved */
2265
2266 userrec* ReHashNick(char* Old, char* New)
2267 {
2268         //user_hash::iterator newnick;
2269         user_hash::iterator oldnick = clientlist.find(Old);
2270
2271         log(DEBUG,"ReHashNick: %s %s",Old,New);
2272
2273         if (!strcasecmp(Old,New))
2274         {
2275                 log(DEBUG,"old nick is new nick, skipping");
2276                 return oldnick->second;
2277         }
2278
2279         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
2280
2281         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
2282
2283         clientlist[New] = new userrec();
2284         clientlist[New] = oldnick->second;
2285         clientlist.erase(oldnick);
2286
2287         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
2288
2289         return clientlist[New];
2290 }
2291
2292 /* adds or updates an entry in the whowas list */
2293 void AddWhoWas(userrec* u)
2294 {
2295         user_hash::iterator iter = whowas.find(u->nick);
2296         userrec *a = new userrec();
2297         strlcpy(a->nick,u->nick,NICKMAX);
2298         strlcpy(a->ident,u->ident,64);
2299         strlcpy(a->dhost,u->dhost,256);
2300         strlcpy(a->host,u->host,256);
2301         strlcpy(a->fullname,u->fullname,128);
2302         strlcpy(a->server,u->server,256);
2303         a->signon = u->signon;
2304
2305         /* MAX_WHOWAS:   max number of /WHOWAS items
2306          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
2307          *               can be replaced by a newer one
2308          */
2309
2310         if (iter == whowas.end())
2311         {
2312                 if (whowas.size() == WHOWAS_MAX)
2313                 {
2314                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
2315                         {
2316                                 // 3600 seconds in an hour ;)
2317                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
2318                                 {
2319                                         if (i->second) delete i->second;
2320                                         i->second = a;
2321                                         log(DEBUG,"added WHOWAS entry, purged an old record");
2322                                         return;
2323                                 }
2324                         }
2325                 }
2326                 else
2327                 {
2328                         log(DEBUG,"added fresh WHOWAS entry");
2329                         whowas[a->nick] = a;
2330                 }
2331         }
2332         else
2333         {
2334                 log(DEBUG,"updated WHOWAS entry");
2335                 if (iter->second) delete iter->second;
2336                 iter->second = a;
2337         }
2338 }
2339
2340
2341 /* add a client connection to the sockets list */
2342 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
2343 {
2344         string tempnick;
2345         char tn2[MAXBUF];
2346         user_hash::iterator iter;
2347
2348         tempnick = ConvToStr(socket) + "-unknown";
2349         sprintf(tn2,"%lu-unknown",(unsigned long)socket);
2350
2351         iter = clientlist.find(tempnick);
2352
2353         if (iter != clientlist.end()) return;
2354
2355         /*
2356          * It is OK to access the value here this way since we know
2357          * it exists, we just created it above.
2358          *
2359          * At NO other time should you access a value in a map or a
2360          * hash_map this way.
2361          */
2362         clientlist[tempnick] = new userrec();
2363
2364         NonBlocking(socket);
2365         log(DEBUG,"AddClient: %lu %s %d %s",(unsigned long)socket,host,port,ip);
2366
2367         clientlist[tempnick]->fd = socket;
2368         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
2369         strncpy(clientlist[tempnick]->host, host,160);
2370         strncpy(clientlist[tempnick]->dhost, host,160);
2371         strncpy(clientlist[tempnick]->server, ServerName,256);
2372         strncpy(clientlist[tempnick]->ident, "unknown",12);
2373         clientlist[tempnick]->registered = 0;
2374         clientlist[tempnick]->signon = TIME+dns_timeout;
2375         clientlist[tempnick]->lastping = 1;
2376         clientlist[tempnick]->port = port;
2377         strncpy(clientlist[tempnick]->ip,ip,32);
2378
2379         // set the registration timeout for this user
2380         unsigned long class_regtimeout = 90;
2381         int class_flood = 0;
2382
2383         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2384         {
2385                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2386                 {
2387                         class_regtimeout = (unsigned long)i->registration_timeout;
2388                         class_flood = i->flood;
2389                         clientlist[tempnick]->pingmax = i->pingtime;
2390                         break;
2391                 }
2392         }
2393
2394         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax+dns_timeout;
2395         clientlist[tempnick]->timeout = TIME+class_regtimeout;
2396         clientlist[tempnick]->flood = class_flood;
2397
2398         for (int i = 0; i < MAXCHANS; i++)
2399         {
2400                 clientlist[tempnick]->chans[i].channel = NULL;
2401                 clientlist[tempnick]->chans[i].uc_modes = 0;
2402         }
2403
2404         if (clientlist.size() == MAXCLIENTS)
2405                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
2406
2407
2408         char* e = matches_exception(ip);
2409         if (!e)
2410         {
2411                 char* r = matches_zline(ip);
2412                 if (r)
2413                 {
2414                         char reason[MAXBUF];
2415                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
2416                         kill_link(clientlist[tempnick],reason);
2417                 }
2418         }
2419 }
2420
2421 // this function counts all users connected, wether they are registered or NOT.
2422 int usercnt(void)
2423 {
2424         return clientlist.size();
2425 }
2426
2427 // this counts only registered users, so that the percentages in /MAP don't mess up when users are sitting in an unregistered state
2428 int registered_usercount(void)
2429 {
2430         int c = 0;
2431         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2432         {
2433                 if ((i->second->fd) && (isnick(i->second->nick))) c++;
2434         }
2435         return c;
2436 }
2437
2438 int usercount_invisible(void)
2439 {
2440         int c = 0;
2441
2442         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2443         {
2444                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
2445         }
2446         return c;
2447 }
2448
2449 int usercount_opers(void)
2450 {
2451         int c = 0;
2452
2453         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2454         {
2455                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
2456         }
2457         return c;
2458 }
2459
2460 int usercount_unknown(void)
2461 {
2462         int c = 0;
2463
2464         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2465         {
2466                 if ((i->second->fd) && (i->second->registered != 7))
2467                         c++;
2468         }
2469         return c;
2470 }
2471
2472 long chancount(void)
2473 {
2474         return chanlist.size();
2475 }
2476
2477 long count_servs(void)
2478 {
2479         int c = 0;
2480         for (int i = 0; i < 32; i++)
2481         {
2482                 if (me[i] != NULL)
2483                 {
2484                         for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2485                         {
2486                                 if (strcasecmp(j->GetServerName().c_str(),ServerName))
2487                                 {
2488                                         c++;
2489                                 }
2490                         }
2491                 }
2492         }
2493         return c;
2494 }
2495
2496 long servercount(void)
2497 {
2498         return count_servs()+1;
2499 }
2500
2501 long local_count()
2502 {
2503         int c = 0;
2504         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2505         {
2506                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
2507         }
2508         return c;
2509 }
2510
2511
2512 void ShowMOTD(userrec *user)
2513 {
2514         std::string WholeMOTD = "";
2515         if (!MOTD.size())
2516         {
2517                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
2518                 return;
2519         }
2520         WholeMOTD = std::string(":") + std::string(ServerName) + std::string(" 375 ") + std::string(user->nick) + std::string(" :- ") + std::string(ServerName) + " message of the day\r\n";
2521         for (int i = 0; i != MOTD.size(); i++)
2522         {
2523                 WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 372 ") + std::string(user->nick) + std::string(" :- ") + MOTD[i] + std::string("\r\n");
2524         }
2525         WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 376 ") + std::string(user->nick) + std::string(" :End of message of the day.\r\n");
2526         // only one write operation
2527         send(user->fd,WholeMOTD.c_str(),WholeMOTD.length(),0);
2528
2529 }
2530
2531 void ShowRULES(userrec *user)
2532 {
2533         if (!RULES.size())
2534         {
2535                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
2536                 return;
2537         }
2538         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
2539         for (int i = 0; i != RULES.size(); i++)
2540         {
2541                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
2542         }
2543         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
2544 }
2545
2546 /* shows the message of the day, and any other on-logon stuff */
2547 void FullConnectUser(userrec* user)
2548 {
2549         user->registered = 7;
2550         user->idle_lastmsg = TIME;
2551         log(DEBUG,"ConnectUser: %s",user->nick);
2552
2553         if ((strcmp(Passwd(user),"")) && (!user->haspassed))
2554         {
2555                 kill_link(user,"Invalid password");
2556                 return;
2557         }
2558         if (IsDenied(user))
2559         {
2560                 kill_link(user,"Unauthorised connection");
2561                 return;
2562         }
2563
2564         char match_against[MAXBUF];
2565         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
2566         char* e = matches_exception(match_against);
2567         if (!e)
2568         {
2569                 char* r = matches_gline(match_against);
2570                 if (r)
2571                 {
2572                         char reason[MAXBUF];
2573                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
2574                         kill_link_silent(user,reason);
2575                         return;
2576                 }
2577                 r = matches_kline(user->host);
2578                 if (r)
2579                 {
2580                         char reason[MAXBUF];
2581                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
2582                         kill_link_silent(user,reason);
2583                         return;
2584                 }
2585         }
2586
2587         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
2588         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
2589         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
2590         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
2591         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
2592         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
2593         std::stringstream v;
2594         v << "MESHED WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
2595         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
2596         v << " TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 CHANMODES=ohvb,k,l,psmnti NETWORK=";
2597         v << std::string(Network);
2598         std::string data005 = v.str();
2599         FOREACH_MOD On005Numeric(data005);
2600         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
2601         // so i'd better split it :)
2602         std::stringstream out(data005);
2603         std::string token = "";
2604         std::string line5 = "";
2605         int token_counter = 0;
2606         while (!out.eof())
2607         {
2608                 out >> token;
2609                 line5 = line5 + token + " ";
2610                 token_counter++;
2611                 if ((token_counter >= 13) || (out.eof() == true))
2612                 {
2613                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
2614                         line5 = "";
2615                         token_counter = 0;
2616                 }
2617         }
2618         ShowMOTD(user);
2619         FOREACH_MOD OnUserConnect(user);
2620         WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,user->ip);
2621
2622         char buffer[MAXBUF];
2623         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);
2624         NetSendToAll(buffer);
2625 }
2626
2627
2628 // this returns 1 when all modules are satisfied that the user should be allowed onto the irc server
2629 // (until this returns true, a user will block in the waiting state, waiting to connect up to the
2630 // registration timeout maximum seconds)
2631 bool AllModulesReportReady(userrec* user)
2632 {
2633         for (int i = 0; i <= MODCOUNT; i++)
2634         {
2635                 int res = modules[i]->OnCheckReady(user);
2636                         if (!res)
2637                                 return false;
2638         }
2639         return true;
2640 }
2641
2642 /* shows the message of the day, and any other on-logon stuff */
2643 void ConnectUser(userrec *user)
2644 {
2645         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
2646         if ((user->dns_done) && (user->registered >= 3) && (AllModulesReportReady(user)))
2647         {
2648                 FullConnectUser(user);
2649         }
2650 }
2651
2652 void handle_version(char **parameters, int pcnt, userrec *user)
2653 {
2654         char Revision[] = "$Revision$";
2655
2656         char *s1 = Revision;
2657         char *savept;
2658         char *v2 = strtok_r(s1," ",&savept);
2659         s1 = savept;
2660         v2 = strtok_r(s1," ",&savept);
2661         s1 = savept;
2662
2663         WriteServ(user->fd,"351 %s :%s Rev. %s %s :%s (O=%lu)",user->nick,VERSION,v2,ServerName,SYSTEM,(unsigned long)OPTIMISATION);
2664 }
2665
2666
2667 // calls a handler function for a command
2668
2669 void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
2670 {
2671                 for (int i = 0; i < cmdlist.size(); i++)
2672                 {
2673                         if (!strcasecmp(cmdlist[i].command,commandname))
2674                         {
2675                                 if (cmdlist[i].handler_function)
2676                                 {
2677                                         if (pcnt>=cmdlist[i].min_params)
2678                                         {
2679                                                 if (strchr(user->modes,cmdlist[i].flags_needed))
2680                                                 {
2681                                                         cmdlist[i].handler_function(parameters,pcnt,user);
2682                                                 }
2683                                         }
2684                                 }
2685                         }
2686                 }
2687 }
2688
2689 void DoSplitEveryone()
2690 {
2691         bool go_again = true;
2692         while (go_again)
2693         {
2694                 go_again = false;
2695                 for (int i = 0; i < 32; i++)
2696                 {
2697                         if (me[i] != NULL)
2698                         {
2699                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2700                                 {
2701                                         if (strcasecmp(j->GetServerName().c_str(),ServerName))
2702                                         {
2703                                                 j->routes.clear();
2704                                                 j->CloseConnection();
2705                                                 me[i]->connectors.erase(j);
2706                                                 go_again = true;
2707                                                 break;
2708                                         }
2709                                 }
2710                         }
2711                 }
2712         }
2713         log(DEBUG,"Removed server. Will remove clients...");
2714         // iterate through the userlist and remove all users on this server.
2715         // because we're dealing with a mesh, we dont have to deal with anything
2716         // "down-route" from this server (nice huh)
2717         go_again = true;
2718         char reason[MAXBUF];
2719         while (go_again)
2720         {
2721                 go_again = false;
2722                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
2723                 {
2724                         if (strcasecmp(u->second->server,ServerName))
2725                         {
2726                                 snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server);
2727                                 kill_link(u->second,reason);
2728                                 go_again = true;
2729                                 break;
2730                         }
2731                 }
2732         }
2733 }
2734
2735
2736
2737 char islast(const char* s)
2738 {
2739         char c = '`';
2740         for (int j = 0; j < 32; j++)
2741         {
2742                 if (me[j] != NULL)
2743                 {
2744                         for (int k = 0; k < me[j]->connectors.size(); k++)
2745                         {
2746                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2747                                 {
2748                                         c = '|';
2749                                 }
2750                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2751                                 {
2752                                         c = '`';
2753                                 }
2754                         }
2755                 }
2756         }
2757         return c;
2758 }
2759
2760 long map_count(const char* s)
2761 {
2762         int c = 0;
2763         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2764         {
2765                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
2766         }
2767         return c;
2768 }
2769
2770
2771 void force_nickchange(userrec* user,const char* newnick)
2772 {
2773         char nick[MAXBUF];
2774         int MOD_RESULT = 0;
2775
2776         strcpy(nick,"");
2777
2778         FOREACH_RESULT(OnUserPreNick(user,newnick));
2779         if (MOD_RESULT) {
2780                 kill_link(user,"Nickname collision");
2781                 return;
2782         }
2783         if (matches_qline(newnick))
2784         {
2785                 kill_link(user,"Nickname collision");
2786                 return;
2787         }
2788
2789         if (user)
2790         {
2791                 if (newnick)
2792                 {
2793                         strncpy(nick,newnick,MAXBUF);
2794                 }
2795                 if (user->registered == 7)
2796                 {
2797                         char* pars[1];
2798                         pars[0] = nick;
2799                         handle_nick(pars,1,user);
2800                 }
2801         }
2802 }
2803
2804
2805 int process_parameters(char **command_p,char *parameters)
2806 {
2807         int j = 0;
2808         int q = strlen(parameters);
2809         if (!q)
2810         {
2811                 /* no parameters, command_p invalid! */
2812                 return 0;
2813         }
2814         if (parameters[0] == ':')
2815         {
2816                 command_p[0] = parameters+1;
2817                 return 1;
2818         }
2819         if (q)
2820         {
2821                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
2822                 {
2823                         /* only one parameter */
2824                         command_p[0] = parameters;
2825                         if (parameters[0] == ':')
2826                         {
2827                                 if (strchr(parameters,' ') != NULL)
2828                                 {
2829                                         command_p[0]++;
2830                                 }
2831                         }
2832                         return 1;
2833                 }
2834         }
2835         command_p[j++] = parameters;
2836         for (int i = 0; i <= q; i++)
2837         {
2838                 if (parameters[i] == ' ')
2839                 {
2840                         command_p[j++] = parameters+i+1;
2841                         parameters[i] = '\0';
2842                         if (command_p[j-1][0] == ':')
2843                         {
2844                                 *command_p[j-1]++; /* remove dodgy ":" */
2845                                 break;
2846                                 /* parameter like this marks end of the sequence */
2847                         }
2848                 }
2849         }
2850         return j; /* returns total number of items in the list */
2851 }
2852
2853 void process_command(userrec *user, char* cmd)
2854 {
2855         char *parameters;
2856         char *command;
2857         char *command_p[127];
2858         char p[MAXBUF], temp[MAXBUF];
2859         int j, items, cmd_found;
2860
2861         for (int i = 0; i < 127; i++)
2862                 command_p[i] = NULL;
2863
2864         if (!user)
2865         {
2866                 return;
2867         }
2868         if (!cmd)
2869         {
2870                 return;
2871         }
2872         if (!cmd[0])
2873         {
2874                 return;
2875         }
2876
2877         int total_params = 0;
2878         if (strlen(cmd)>2)
2879         {
2880                 for (int q = 0; q < strlen(cmd)-1; q++)
2881                 {
2882                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
2883                         {
2884                                 total_params++;
2885                                 // found a 'trailing', we dont count them after this.
2886                                 break;
2887                         }
2888                         if (cmd[q] == ' ')
2889                                 total_params++;
2890                 }
2891         }
2892
2893         // another phidjit bug...
2894         if (total_params > 126)
2895         {
2896                 *(strchr(cmd,' ')) = '\0';
2897                 WriteServ(user->fd,"421 %s %s :Too many parameters given",user->nick,cmd);
2898                 return;
2899         }
2900
2901         strlcpy(temp,cmd,MAXBUF);
2902
2903         std::string tmp = cmd;
2904         for (int i = 0; i <= MODCOUNT; i++)
2905         {
2906                 std::string oldtmp = tmp;
2907                 modules[i]->OnServerRaw(tmp,true,user);
2908                 if (oldtmp != tmp)
2909                 {
2910                         log(DEBUG,"A Module changed the input string!");
2911                         log(DEBUG,"New string: %s",tmp.c_str());
2912                         log(DEBUG,"Old string: %s",oldtmp.c_str());
2913                         break;
2914                 }
2915         }
2916         strlcpy(cmd,tmp.c_str(),MAXBUF);
2917         strlcpy(temp,cmd,MAXBUF);
2918
2919         if (!strchr(cmd,' '))
2920         {
2921                 /* no parameters, lets skip the formalities and not chop up
2922                  * the string */
2923                 log(DEBUG,"About to preprocess command with no params");
2924                 items = 0;
2925                 command_p[0] = NULL;
2926                 parameters = NULL;
2927                 for (int i = 0; i <= strlen(cmd); i++)
2928                 {
2929                         cmd[i] = toupper(cmd[i]);
2930                 }
2931                 command = cmd;
2932         }
2933         else
2934         {
2935                 strcpy(cmd,"");
2936                 j = 0;
2937                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
2938                 for (int i = 0; i < strlen(temp); i++)
2939                 {
2940                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
2941                         {
2942                                 cmd[j++] = temp[i];
2943                                 cmd[j] = 0;
2944                         }
2945                 }
2946                 /* split the full string into a command plus parameters */
2947                 parameters = p;
2948                 strcpy(p," ");
2949                 command = cmd;
2950                 if (strchr(cmd,' '))
2951                 {
2952                         for (int i = 0; i <= strlen(cmd); i++)
2953                         {
2954                                 /* capitalise the command ONLY, leave params intact */
2955                                 cmd[i] = toupper(cmd[i]);
2956                                 /* are we nearly there yet?! :P */
2957                                 if (cmd[i] == ' ')
2958                                 {
2959                                         command = cmd;
2960                                         parameters = cmd+i+1;
2961                                         cmd[i] = '\0';
2962                                         break;
2963                                 }
2964                         }
2965                 }
2966                 else
2967                 {
2968                         for (int i = 0; i <= strlen(cmd); i++)
2969                         {
2970                                 cmd[i] = toupper(cmd[i]);
2971                         }
2972                 }
2973
2974         }
2975         cmd_found = 0;
2976
2977         if (strlen(command)>MAXCOMMAND)
2978         {
2979                 WriteServ(user->fd,"421 %s %s :Command too long",user->nick,command);
2980                 return;
2981         }
2982
2983         for (int x = 0; x < strlen(command); x++)
2984         {
2985                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
2986                 {
2987                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
2988                         {
2989                                 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
2990                                 {
2991                                         WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
2992                                         return;
2993                                 }
2994                         }
2995                 }
2996         }
2997
2998         for (int i = 0; i != cmdlist.size(); i++)
2999         {
3000                 if (cmdlist[i].command[0])
3001                 {
3002                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
3003                         {
3004                                 if (parameters)
3005                                 {
3006                                         if (parameters[0])
3007                                         {
3008                                                 items = process_parameters(command_p,parameters);
3009                                         }
3010                                         else
3011                                         {
3012                                                 items = 0;
3013                                                 command_p[0] = NULL;
3014                                         }
3015                                 }
3016                                 else
3017                                 {
3018                                         items = 0;
3019                                         command_p[0] = NULL;
3020                                 }
3021
3022                                 if (user)
3023                                 {
3024                                         /* activity resets the ping pending timer */
3025                                         user->nping = TIME + user->pingmax;
3026                                         if ((items) < cmdlist[i].min_params)
3027                                         {
3028                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
3029                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
3030                                                 return;
3031                                         }
3032                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
3033                                         {
3034                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3035                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
3036                                                 cmd_found = 1;
3037                                                 return;
3038                                         }
3039                                         if ((cmdlist[i].flags_needed) && (!user->HasPermission(command)))
3040                                         {
3041                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3042                                                 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
3043                                                 cmd_found = 1;
3044                                                 return;
3045                                         }
3046                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
3047                                          * deny command! */
3048                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
3049                                         {
3050                                                 if ((!isnick(user->nick)) || (user->registered != 7))
3051                                                 {
3052                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
3053                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
3054                                                         return;
3055                                                 }
3056                                         }
3057                                         if ((user->registered == 7) && (!strchr(user->modes,'o')))
3058                                         {
3059                                                 char* mycmd;
3060                                                 char* savept2;
3061                                                 mycmd = strtok_r(DisabledCommands," ",&savept2);
3062                                                 while (mycmd)
3063                                                 {
3064                                                         if (!strcasecmp(mycmd,command))
3065                                                         {
3066                                                                 // command is disabled!
3067                                                                 WriteServ(user->fd,"421 %s %s :This command has been disabled.",user->nick,command);
3068                                                                 return;
3069                                                         }
3070                                                         mycmd = strtok_r(NULL," ",&savept2);
3071                                                 }
3072
3073
3074                                         }
3075                                         if ((user->registered == 7) || (!strncmp(command,"USER",4)) || (!strncmp(command,"NICK",4)) || (!strncmp(command,"PASS",4)))
3076                                         {
3077                                                 if (cmdlist[i].handler_function)
3078                                                 {
3079
3080                                                         /* ikky /stats counters */
3081                                                         if (temp)
3082                                                         {
3083                                                                 if (user)
3084                                                                 {
3085                                                                         user->bytes_in += strlen(temp);
3086                                                                         user->cmds_in++;
3087                                                                         user->bytes_out+=strlen(temp);
3088                                                                         user->cmds_out++;
3089                                                                 }
3090                                                                 cmdlist[i].use_count++;
3091                                                                 cmdlist[i].total_bytes+=strlen(temp);
3092                                                         }
3093
3094                                                         int MOD_RESULT = 0;
3095                                                         FOREACH_RESULT(OnPreCommand(command,command_p,items,user));
3096                                                         if (MOD_RESULT == 1) {
3097                                                                 return;
3098                                                         }
3099
3100                                                         /* WARNING: nothing may come after the
3101                                                          * command handler call, as the handler
3102                                                          * may free the user structure! */
3103
3104                                                         cmdlist[i].handler_function(command_p,items,user);
3105                                                 }
3106                                                 return;
3107                                         }
3108                                         else
3109                                         {
3110                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
3111                                                 return;
3112                                         }
3113                                 }
3114                                 cmd_found = 1;
3115                         }
3116                 }
3117         }
3118         if ((!cmd_found) && (user))
3119         {
3120                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3121         }
3122 }
3123
3124
3125 void createcommand(char* cmd, handlerfunc f, char flags, int minparams,char* source)
3126 {
3127         command_t comm;
3128         /* create the command and push it onto the table */
3129         strlcpy(comm.command,cmd,MAXBUF);
3130         strlcpy(comm.source,source,MAXBUF);
3131         comm.handler_function = f;
3132         comm.flags_needed = flags;
3133         comm.min_params = minparams;
3134         comm.use_count = 0;
3135         comm.total_bytes = 0;
3136         cmdlist.push_back(comm);
3137         log(DEBUG,"Added command %s (%lu parameters)",cmd,(unsigned long)minparams);
3138 }
3139
3140 bool removecommands(const char* source)
3141 {
3142         bool go_again = true;
3143         while (go_again)
3144         {
3145                 go_again = false;
3146                 for (std::deque<command_t>::iterator i = cmdlist.begin(); i != cmdlist.end(); i++)
3147                 {
3148                         if (!strcmp(i->source,source))
3149                         {
3150                                 log(DEBUG,"removecommands(%s) Removing dependent command: %s",i->source,i->command);
3151                                 cmdlist.erase(i);
3152                                 go_again = true;
3153                                 break;
3154                         }
3155                 }
3156         }
3157         return true;
3158 }
3159
3160 void SetupCommandTable(void)
3161 {
3162         createcommand("USER",handle_user,0,4,"<core>");
3163         createcommand("NICK",handle_nick,0,1,"<core>");
3164         createcommand("QUIT",handle_quit,0,0,"<core>");
3165         createcommand("VERSION",handle_version,0,0,"<core>");
3166         createcommand("PING",handle_ping,0,1,"<core>");
3167         createcommand("PONG",handle_pong,0,1,"<core>");
3168         createcommand("ADMIN",handle_admin,0,0,"<core>");
3169         createcommand("PRIVMSG",handle_privmsg,0,2,"<core>");
3170         createcommand("INFO",handle_info,0,0,"<core>");
3171         createcommand("TIME",handle_time,0,0,"<core>");
3172         createcommand("WHOIS",handle_whois,0,1,"<core>");
3173         createcommand("WALLOPS",handle_wallops,'o',1,"<core>");
3174         createcommand("NOTICE",handle_notice,0,2,"<core>");
3175         createcommand("JOIN",handle_join,0,1,"<core>");
3176         createcommand("NAMES",handle_names,0,0,"<core>");
3177         createcommand("PART",handle_part,0,1,"<core>");
3178         createcommand("KICK",handle_kick,0,2,"<core>");
3179         createcommand("MODE",handle_mode,0,1,"<core>");
3180         createcommand("TOPIC",handle_topic,0,1,"<core>");
3181         createcommand("WHO",handle_who,0,1,"<core>");
3182         createcommand("MOTD",handle_motd,0,0,"<core>");
3183         createcommand("RULES",handle_rules,0,0,"<core>");
3184         createcommand("OPER",handle_oper,0,2,"<core>");
3185         createcommand("LIST",handle_list,0,0,"<core>");
3186         createcommand("DIE",handle_die,'o',1,"<core>");
3187         createcommand("RESTART",handle_restart,'o',1,"<core>");
3188         createcommand("KILL",handle_kill,'o',2,"<core>");
3189         createcommand("REHASH",handle_rehash,'o',0,"<core>");
3190         createcommand("LUSERS",handle_lusers,0,0,"<core>");
3191         createcommand("STATS",handle_stats,0,1,"<core>");
3192         createcommand("USERHOST",handle_userhost,0,1,"<core>");
3193         createcommand("AWAY",handle_away,0,0,"<core>");
3194         createcommand("ISON",handle_ison,0,0,"<core>");
3195         createcommand("SUMMON",handle_summon,0,0,"<core>");
3196         createcommand("USERS",handle_users,0,0,"<core>");
3197         createcommand("INVITE",handle_invite,0,2,"<core>");
3198         createcommand("PASS",handle_pass,0,1,"<core>");
3199         createcommand("TRACE",handle_trace,'o',0,"<core>");
3200         createcommand("WHOWAS",handle_whowas,0,1,"<core>");
3201         createcommand("CONNECT",handle_connect,'o',1,"<core>");
3202         createcommand("SQUIT",handle_squit,'o',0,"<core>");
3203         createcommand("MODULES",handle_modules,0,0,"<core>");
3204         createcommand("LINKS",handle_links,0,0,"<core>");
3205         createcommand("MAP",handle_map,0,0,"<core>");
3206         createcommand("KLINE",handle_kline,'o',1,"<core>");
3207         createcommand("GLINE",handle_gline,'o',1,"<core>");
3208         createcommand("ZLINE",handle_zline,'o',1,"<core>");
3209         createcommand("QLINE",handle_qline,'o',1,"<core>");
3210         createcommand("ELINE",handle_eline,'o',1,"<core>");
3211         createcommand("LOADMODULE",handle_loadmodule,'o',1,"<core>");
3212         createcommand("UNLOADMODULE",handle_unloadmodule,'o',1,"<core>");
3213         createcommand("SERVER",handle_server,0,0,"<core>");
3214 }
3215
3216 void process_buffer(const char* cmdbuf,userrec *user)
3217 {
3218         if (!user)
3219         {
3220                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3221                 return;
3222         }
3223         char cmd[MAXBUF];
3224         if (!cmdbuf)
3225         {
3226                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3227                 return;
3228         }
3229         if (!cmdbuf[0])
3230         {
3231                 return;
3232         }
3233         while (*cmdbuf == ' ') cmdbuf++; // strip leading spaces
3234
3235         strlcpy(cmd,cmdbuf,MAXBUF);
3236         if (!cmd[0])
3237         {
3238                 return;
3239         }
3240         int sl = strlen(cmd)-1;
3241         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3242         {
3243                 cmd[sl] = '\0';
3244         }
3245         sl = strlen(cmd)-1;
3246         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3247         {
3248                 cmd[sl] = '\0';
3249         }
3250         sl = strlen(cmd)-1;
3251         while (cmd[sl] == ' ') // strip trailing spaces
3252         {
3253                 cmd[sl] = '\0';
3254                 sl = strlen(cmd)-1;
3255         }
3256
3257         if (!cmd[0])
3258         {
3259                 return;
3260         }
3261         log(DEBUG,"CMDIN: %s %s",user->nick,cmd);
3262         tidystring(cmd);
3263         if ((user) && (cmd))
3264         {
3265                 process_command(user,cmd);
3266         }
3267 }
3268
3269 void DoSync(serverrec* serv, char* tcp_host)
3270 {
3271         char data[MAXBUF];
3272         log(DEBUG,"Sending sync");
3273         // send start of sync marker: Y <timestamp>
3274         // at this point the ircd receiving it starts broadcasting this netburst to all ircds
3275         // except the ones its receiving it from.
3276         snprintf(data,MAXBUF,"Y %lu",(unsigned long)TIME);
3277         serv->SendPacket(data,tcp_host);
3278         // send users and channels
3279         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
3280         {
3281                 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);
3282                 serv->SendPacket(data,tcp_host);
3283                 if (strchr(u->second->modes,'o'))
3284                 {
3285                         snprintf(data,MAXBUF,"| %s %s",u->second->nick,u->second->oper);
3286                         serv->SendPacket(data,tcp_host);
3287                 }
3288                 for (int i = 0; i <= MODCOUNT; i++)
3289                 {
3290                         string_list l = modules[i]->OnUserSync(u->second);
3291                         for (int j = 0; j < l.size(); j++)
3292                         {
3293                                 strlcpy(data,l[j].c_str(),MAXBUF);
3294                                 serv->SendPacket(data,tcp_host);
3295                         }
3296                 }
3297                 char* chl = chlist(u->second);
3298                 if (strcmp(chl,""))
3299                 {
3300                         snprintf(data,MAXBUF,"J %s %s",u->second->nick,chl);
3301                         serv->SendPacket(data,tcp_host);
3302                 }
3303         }
3304         // send channel modes, topics etc...
3305         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
3306         {
3307                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
3308                 serv->SendPacket(data,tcp_host);
3309                 for (int i = 0; i <= MODCOUNT; i++)
3310                 {
3311                         string_list l = modules[i]->OnChannelSync(c->second);
3312                         for (int j = 0; j < l.size(); j++)
3313                         {
3314                                 strlcpy(data,l[j].c_str(),MAXBUF);
3315                                 serv->SendPacket(data,tcp_host);
3316                         }
3317                 }
3318                 if (c->second->topic[0])
3319                 {
3320                         snprintf(data,MAXBUF,"T %lu %s %s :%s",(unsigned long)c->second->topicset,c->second->setby,c->second->name,c->second->topic);
3321                         serv->SendPacket(data,tcp_host);
3322                 }
3323                 // send current banlist
3324
3325                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
3326                 {
3327                         snprintf(data,MAXBUF,"M %s +b %s",c->second->name,b->data);
3328                         serv->SendPacket(data,tcp_host);
3329                 }
3330         }
3331         // sync global zlines, glines, etc
3332         sync_xlines(serv,tcp_host);
3333
3334         for (int j = 0; j < 32; j++)
3335         {
3336                 if (me[j] != NULL)
3337                 {
3338                         for (int k = 0; k < me[j]->connectors.size(); k++)
3339                         {
3340                                 if (is_uline(me[j]->connectors[k].GetServerName().c_str()))
3341                                 {
3342                                         snprintf(data,MAXBUF,"H %s",me[j]->connectors[k].GetServerName().c_str());
3343                                         serv->SendPacket(data,tcp_host);
3344                                         NetSendMyRoutingTable();
3345                                 }
3346                         }
3347                 }
3348         }
3349
3350         snprintf(data,MAXBUF,"F %lu",(unsigned long)TIME);
3351         serv->SendPacket(data,tcp_host);
3352         log(DEBUG,"Sent sync");
3353         // ircd sends its serverlist after the end of sync here
3354 }
3355
3356
3357 void NetSendMyRoutingTable()
3358 {
3359         // send out a line saying what is reachable to us.
3360         // E.g. if A is linked to B C and D, send out:
3361         // $ A B C D
3362         // if its only linked to B and D send out:
3363         // $ A B D
3364         // if it has no links, dont even send out the line at all.
3365         char buffer[MAXBUF];
3366         snprintf(buffer,MAXBUF,"$ %s",ServerName);
3367         bool sendit = false;
3368         for (int i = 0; i < 32; i++)
3369         {
3370                 if (me[i] != NULL)
3371                 {
3372                         for (int j = 0; j < me[i]->connectors.size(); j++)
3373                         {
3374                                 if ((me[i]->connectors[j].GetState() != STATE_DISCONNECTED) || (is_uline(me[i]->connectors[j].GetServerName().c_str())))
3375                                 {
3376                                         strlcat(buffer," ",MAXBUF);
3377                                         strlcat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF);
3378                                         sendit = true;
3379                                 }
3380                         }
3381                 }
3382         }
3383         if (sendit)
3384                 NetSendToAll(buffer);
3385 }
3386
3387
3388 void DoSplit(const char* params)
3389 {
3390         bool go_again = true;
3391         while (go_again)
3392         {
3393                 go_again = false;
3394                 for (int i = 0; i < 32; i++)
3395                 {
3396                         if (me[i] != NULL)
3397                         {
3398                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3399                                 {
3400                                         if (!strcasecmp(j->GetServerName().c_str(),params))
3401                                         {
3402                                                 j->routes.clear();
3403                                                 j->CloseConnection();
3404                                                 me[i]->connectors.erase(j);
3405                                                 go_again = true;
3406                                                 break;
3407                                         }
3408                                 }
3409                         }
3410                 }
3411         }
3412         log(DEBUG,"Removed server. Will remove clients...");
3413         // iterate through the userlist and remove all users on this server.
3414         // because we're dealing with a mesh, we dont have to deal with anything
3415         // "down-route" from this server (nice huh)
3416         go_again = true;
3417         char reason[MAXBUF];
3418         snprintf(reason,MAXBUF,"%s %s",ServerName,params);
3419         while (go_again)
3420         {
3421                 go_again = false;
3422                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3423                 {
3424                         if (!strcasecmp(u->second->server,params))
3425                         {
3426                                 kill_link(u->second,reason);
3427                                 go_again = true;
3428                                 break;
3429                         }
3430                 }
3431         }
3432 }
3433
3434 // removes a server. Will NOT remove its users!
3435
3436 void RemoveServer(const char* name)
3437 {
3438         bool go_again = true;
3439         while (go_again)
3440         {
3441                 go_again = false;
3442                 for (int i = 0; i < 32; i++)
3443                 {
3444                         if (me[i] != NULL)
3445                         {
3446                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3447                                 {
3448                                         if (!strcasecmp(j->GetServerName().c_str(),name))
3449                                         {
3450                                                 j->routes.clear();
3451                                                 j->CloseConnection();
3452                                                 me[i]->connectors.erase(j);
3453                                                 go_again = true;
3454                                                 break;
3455                                         }
3456                                 }
3457                         }
3458                 }
3459         }
3460 }
3461
3462
3463 char MODERR[MAXBUF];
3464
3465 char* ModuleError()
3466 {
3467         return MODERR;
3468 }
3469
3470 void erase_factory(int j)
3471 {
3472         int v = 0;
3473         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
3474         {
3475                 if (v == j)
3476                 {
3477                         factory.erase(t);
3478                         factory.push_back(NULL);
3479                         return;
3480                 }
3481                 v++;
3482         }
3483 }
3484
3485 void erase_module(int j)
3486 {
3487         int v1 = 0;
3488         for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
3489         {
3490                 if (v1 == j)
3491                 {
3492                         delete *m;
3493                         modules.erase(m);
3494                         modules.push_back(NULL);
3495                         break;
3496                 }
3497                 v1++;
3498         }
3499         int v2 = 0;
3500         for (std::vector<std::string>::iterator v = module_names.begin(); v != module_names.end(); v++)
3501         {
3502                 if (v2 == j)
3503                 {
3504                        module_names.erase(v);
3505                        break;
3506                 }
3507                 v2++;
3508         }
3509
3510 }
3511
3512 bool UnloadModule(const char* filename)
3513 {
3514         for (int j = 0; j != module_names.size(); j++)
3515         {
3516                 if (module_names[j] == std::string(filename))
3517                 {
3518                         if (modules[j]->GetVersion().Flags & VF_STATIC)
3519                         {
3520                                 log(DEFAULT,"Failed to unload STATIC module %s",filename);
3521                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
3522                                 return false;
3523                         }
3524                         // found the module
3525                         log(DEBUG,"Deleting module...");
3526                         erase_module(j);
3527                         log(DEBUG,"Erasing module entry...");
3528                         erase_factory(j);
3529                         log(DEBUG,"Removing dependent commands...");
3530                         removecommands(filename);
3531                         log(DEFAULT,"Module %s unloaded",filename);
3532                         MODCOUNT--;
3533                         return true;
3534                 }
3535         }
3536         log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
3537         snprintf(MODERR,MAXBUF,"Module not loaded");
3538         return false;
3539 }
3540
3541 bool DirValid(char* dirandfile)
3542 {
3543         char work[MAXBUF];
3544         strlcpy(work,dirandfile,MAXBUF);
3545         int p = strlen(work);
3546         // we just want the dir
3547         while (strlen(work))
3548         {
3549                 if (work[p] == '/')
3550                 {
3551                         work[p] = '\0';
3552                         break;
3553                 }
3554                 work[p--] = '\0';
3555         }
3556         char buffer[MAXBUF], otherdir[MAXBUF];
3557         // Get the current working directory
3558         if( getcwd( buffer, MAXBUF ) == NULL )
3559                 return false;
3560         chdir(work);
3561         if( getcwd( otherdir, MAXBUF ) == NULL )
3562                 return false;
3563         chdir(buffer);
3564         if (strlen(otherdir) >= strlen(work))
3565         {
3566                 otherdir[strlen(work)] = '\0';
3567                 if (!strcmp(otherdir,work))
3568                 {
3569                         return true;
3570                 }
3571                 return false;
3572         }
3573         else return false;
3574 }
3575
3576 bool LoadModule(const char* filename)
3577 {
3578         char modfile[MAXBUF];
3579         snprintf(modfile,MAXBUF,"%s/%s",ModPath,filename);
3580         if (!DirValid(modfile))
3581         {
3582                 log(DEFAULT,"Module %s is not within the modules directory.",modfile);
3583                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
3584                 return false;
3585         }
3586         log(DEBUG,"Loading module: %s",modfile);
3587         if (FileExists(modfile))
3588         {
3589                 for (int j = 0; j < module_names.size(); j++)
3590                 {
3591                         if (module_names[j] == std::string(filename))
3592                         {
3593                                 log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
3594                                 snprintf(MODERR,MAXBUF,"Module already loaded");
3595                                 return false;
3596                         }
3597                 }
3598                 ircd_module* a = new ircd_module(modfile);
3599                 factory[MODCOUNT+1] = a;
3600                 if (factory[MODCOUNT+1]->LastError())
3601                 {
3602                         log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
3603                         snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
3604                         MODCOUNT--;
3605                         return false;
3606                 }
3607                 if (factory[MODCOUNT+1]->factory)
3608                 {
3609                         Module* m = factory[MODCOUNT+1]->factory->CreateModule();
3610                         modules[MODCOUNT+1] = m;
3611                         /* save the module and the module's classfactory, if
3612                          * this isnt done, random crashes can occur :/ */
3613                         module_names.push_back(filename);
3614                 }
3615                 else
3616                 {
3617                         log(DEFAULT,"Unable to load %s",modfile);
3618                         snprintf(MODERR,MAXBUF,"Factory function failed!");
3619                         return false;
3620                 }
3621         }
3622         else
3623         {
3624                 log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
3625                 snprintf(MODERR,MAXBUF,"Module file could not be found");
3626                 return false;
3627         }
3628         MODCOUNT++;
3629         return true;
3630 }
3631
3632 int InspIRCd(void)
3633 {
3634         struct sockaddr_in client,server;
3635         char addrs[MAXBUF][255];
3636         int incomingSockfd, result = TRUE;
3637         socklen_t length;
3638         int count = 0;
3639         int selectResult = 0, selectResult2 = 0;
3640         char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
3641         fd_set selectFds;
3642         timeval tv;
3643
3644         log_file = fopen("ircd.log","a+");
3645         if (!log_file)
3646         {
3647                 printf("ERROR: Could not write to logfile ircd.log, bailing!\n\n");
3648                 Exit(ERROR);
3649         }
3650
3651         log(DEFAULT,"$Id$");
3652         if (geteuid() == 0)
3653         {
3654                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
3655                 Exit(ERROR);
3656                 log(DEFAULT,"InspIRCd: startup: not starting with UID 0!");
3657         }
3658         SetupCommandTable();
3659         log(DEBUG,"InspIRCd: startup: default command table set up");
3660
3661         ReadConfig(true,NULL);
3662         if (DieValue[0])
3663         {
3664                 printf("WARNING: %s\n\n",DieValue);
3665                 log(DEFAULT,"Ut-Oh, somebody didn't read their config file: '%s'",DieValue);
3666                 exit(0);
3667         }
3668         log(DEBUG,"InspIRCd: startup: read config");
3669
3670         int clientportcount = 0, serverportcount = 0;
3671
3672         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
3673         {
3674                 ConfValue("bind","port",count,configToken,&config_f);
3675                 ConfValue("bind","address",count,Addr,&config_f);
3676                 ConfValue("bind","type",count,Type,&config_f);
3677                 if (!strcmp(Type,"servers"))
3678                 {
3679                         char Default[MAXBUF];
3680                         strcpy(Default,"no");
3681                         ConfValue("bind","default",count,Default,&config_f);
3682                         if (strchr(Default,'y'))
3683                         {
3684                                 defaultRoute = serverportcount;
3685                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
3686                         }
3687                         me[serverportcount] = new serverrec(ServerName,100L,false);
3688                         if (!me[serverportcount]->CreateListener(Addr,atoi(configToken)))
3689                         {
3690                                 log(DEFAULT,"Warning: Failed to bind port %lu",(unsigned long)atoi(configToken));
3691                                 printf("Warning: Failed to bind port %lu\n",(unsigned long)atoi(configToken));
3692                         }
3693                         else
3694                         {
3695                                 serverportcount++;
3696                         }
3697                 }
3698                 else
3699                 {
3700                         ports[clientportcount] = atoi(configToken);
3701                         strlcpy(addrs[clientportcount],Addr,256);
3702                         clientportcount++;
3703                 }
3704                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
3705         }
3706         portCount = clientportcount;
3707         UDPportCount = serverportcount;
3708
3709         log(DEBUG,"InspIRCd: startup: read %lu total client ports and %lu total server ports",(unsigned long)portCount,(unsigned long)UDPportCount);
3710         log(DEBUG,"InspIRCd: startup: InspIRCd is now starting!");
3711
3712         printf("\n");
3713
3714         /* BugFix By Craig! :p */
3715         MODCOUNT = -1;
3716         for (count = 0; count < ConfValueEnum("module",&config_f); count++)
3717         {
3718                 ConfValue("module","name",count,configToken,&config_f);
3719                 printf("Loading module... \033[1;32m%s\033[0m\n",configToken);
3720                 if (!LoadModule(configToken))
3721                 {
3722                         log(DEFAULT,"Exiting due to a module loader error.");
3723                         printf("\nThere was an error loading a module: %s\n\nYou might want to do './inspircd start' instead of 'bin/inspircd'\n\n",ModuleError());
3724                         Exit(0);
3725                 }
3726         }
3727         log(DEFAULT,"Total loaded modules: %lu",(unsigned long)MODCOUNT+1);
3728
3729         startup_time = time(NULL);
3730
3731         char PID[MAXBUF];
3732         ConfValue("pid","file",0,PID,&config_f);
3733         // write once here, to try it out and make sure its ok
3734         WritePID(PID);
3735
3736         /* setup select call */
3737         FD_ZERO(&selectFds);
3738         log(DEBUG,"InspIRCd: startup: zero selects");
3739         log(VERBOSE,"InspIRCd: startup: portCount = %lu", (unsigned long)portCount);
3740
3741         for (count = 0; count < portCount; count++)
3742         {
3743                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
3744                 {
3745                         log(DEBUG,"InspIRCd: startup: bad fd %lu",(unsigned long)openSockfd[boundPortCount]);
3746                         return(ERROR);
3747                 }
3748                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
3749                 {
3750                         log(DEFAULT,"InspIRCd: startup: failed to bind port %lu",(unsigned long)ports[count]);
3751                 }
3752                 else    /* well we at least bound to one socket so we'll continue */
3753                 {
3754                         boundPortCount++;
3755                 }
3756         }
3757
3758         log(DEBUG,"InspIRCd: startup: total bound ports %lu",(unsigned long)boundPortCount);
3759
3760         /* if we didn't bind to anything then abort */
3761         if (boundPortCount == 0)
3762         {
3763                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
3764                 printf("\nERROR: Was not able to bind any of %lu ports! Please check your configuration.\n\n", (unsigned long)portCount);
3765                 return (ERROR);
3766         }
3767
3768
3769         printf("\nInspIRCd is now running!\n");
3770
3771         if (nofork)
3772         {
3773                 log(VERBOSE,"Not forking as -nofork was specified");
3774         }
3775         else
3776         {
3777                 if (DaemonSeed() == ERROR)
3778                 {
3779                         log(DEFAULT,"InspIRCd: startup: can't daemonise");
3780                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
3781                         Exit(ERROR);
3782                 }
3783         }
3784
3785         WritePID(PID);
3786
3787         length = sizeof (client);
3788         char udp_msg[MAXBUF],tcp_host[MAXBUF];
3789
3790         fd_set serverfds;
3791         timeval tvs;
3792         tvs.tv_usec = 10000L;
3793         tvs.tv_sec = 0;
3794         tv.tv_sec = 0;
3795         tv.tv_usec = 10000L;
3796         char data[10240];
3797         timeval tval;
3798         fd_set sfd;
3799         tval.tv_usec = 10000L;
3800         tval.tv_sec = 0;
3801         int total_in_this_set = 0;
3802         int v = 0;
3803         bool expire_run = false;
3804
3805         /* main loop, this never returns */
3806         for (;;)
3807         {
3808 #ifdef _POSIX_PRIORITY_SCHEDULING
3809                 sched_yield();
3810 #endif
3811                 // poll dns queue
3812                 dns_poll();
3813                 FD_ZERO(&sfd);
3814
3815                 // we only read time() once per iteration rather than tons of times!
3816                 TIME = time(NULL);
3817
3818                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
3819                 // them in a list, then reap the list every second or so.
3820                 if (((TIME % 5) == 0) && (!expire_run))
3821                 {
3822                         expire_lines();
3823                         FOREACH_MOD OnBackgroundTimer(TIME);
3824                         expire_run = true;
3825                         continue;
3826                 }
3827                 if ((TIME % 5) == 1)
3828                         expire_run = false;
3829
3830                 // fix by brain - this must be below any manipulation of the hashmap by modules
3831                 user_hash::iterator count2 = clientlist.begin();
3832
3833                 FD_ZERO(&serverfds);
3834
3835                 for (int x = 0; x != UDPportCount; x++)
3836                 {
3837                         if (me[x])
3838                                 FD_SET(me[x]->fd, &serverfds);
3839                 }
3840
3841                 // serverFds timevals went here
3842
3843                 tvs.tv_usec = 30000L;
3844                 tvs.tv_sec = 0;
3845                 int servresult = select(32767, &serverfds, NULL, NULL, &tvs);
3846                 if (servresult > 0)
3847                 {
3848                         for (int x = 0; x != UDPportCount; x++)
3849                         {
3850                                 if ((me[x]) && (FD_ISSET (me[x]->fd, &serverfds)))
3851                                 {
3852                                         char remotehost[MAXBUF],resolved[MAXBUF];
3853                                         length = sizeof (client);
3854                                         incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length);
3855                                         if (incomingSockfd != -1)
3856                                         {
3857                                                 strlcpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF);
3858                                                 if(CleanAndResolve(resolved, remotehost) != TRUE)
3859                                                 {
3860                                                         strlcpy(resolved,remotehost,MAXBUF);
3861                                                 }
3862                                                 // add to this connections ircd_connector vector
3863                                                 // *FIX* - we need the LOCAL port not the remote port in &client!
3864                                                 me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port);
3865                                         }
3866                                 }
3867                         }
3868                 }
3869
3870                 for (int x = 0; x < UDPportCount; x++)
3871                 {
3872                         std::deque<std::string> msgs;
3873                         msgs.clear();
3874                         if ((me[x]) && (me[x]->RecvPacket(msgs, tcp_host)))
3875                         {
3876                                 for (int ctr = 0; ctr < msgs.size(); ctr++)
3877                                 {
3878                                         strlcpy(udp_msg,msgs[ctr].c_str(),MAXBUF);
3879                                         log(DEBUG,"Processing: %s",udp_msg);
3880                                         if (!udp_msg[0])
3881                                         {
3882                                                 log(DEBUG,"Invalid string from %s [route%lu]",tcp_host,(unsigned long)x);
3883                                                 break;
3884                                         }
3885                                         // during a netburst, send all data to all other linked servers
3886                                         if ((((nb_start>0) && (udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))) || (is_uline(tcp_host)))
3887                                         {
3888                                                 if (is_uline(tcp_host))
3889                                                 {
3890                                                         if ((udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))
3891                                                         {
3892                                                                 NetSendToAllExcept(tcp_host,udp_msg);
3893                                                         }
3894                                                 }
3895                                                 else
3896                                                         NetSendToAllExcept(tcp_host,udp_msg);
3897                                         }
3898                                         std::string msg = udp_msg;
3899                                         FOREACH_MOD OnPacketReceive(msg,tcp_host);
3900                                         strlcpy(udp_msg,msg.c_str(),MAXBUF);
3901                                         handle_link_packet(udp_msg, tcp_host, me[x]);
3902                                 }
3903                                 goto label;
3904                         }
3905                 }
3906
3907
3908         while (count2 != clientlist.end())
3909         {
3910                 FD_ZERO(&sfd);
3911                 total_in_this_set = 0;
3912
3913                 user_hash::iterator xcount = count2;
3914                 user_hash::iterator endingiter = count2;
3915
3916                 if (count2 == clientlist.end()) break;
3917
3918                 if (count2->second)
3919                 if (count2->second->fd != 0)
3920                 {
3921                         // assemble up to 64 sockets into an fd_set
3922                         // to implement a pooling mechanism.
3923                         //
3924                         // This should be up to 64x faster than the
3925                         // old implementation.
3926                         while (total_in_this_set < 64)
3927                         {
3928                                 if (count2 != clientlist.end())
3929                                 {
3930                                         // we don't check the state of remote users.
3931                                         if ((count2->second->fd != -1) && (count2->second->fd != FD_MAGIC_NUMBER))
3932                                         {
3933                                                 FD_SET (count2->second->fd, &sfd);
3934
3935                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
3936                                                 // their connection class.
3937                                                 if ((TIME > count2->second->timeout) && (count2->second->registered != 7))
3938                                                 {
3939                                                         log(DEBUG,"InspIRCd: registration timeout: %s",count2->second->nick);
3940                                                         kill_link(count2->second,"Registration timeout");
3941                                                         goto label;
3942                                                 }
3943                                                 if ((TIME > count2->second->signon) && (count2->second->registered == 3) && (AllModulesReportReady(count2->second)))
3944                                                 {
3945                                                         log(DEBUG,"signon exceed, registered=3, and modules ready, OK");
3946                                                         count2->second->dns_done = true;
3947                                                         FullConnectUser(count2->second);
3948                                                         goto label;
3949                                                 }
3950                                                 if ((count2->second->dns_done) && (count2->second->registered == 3) && (AllModulesReportReady(count2->second))) // both NICK and USER... and DNS
3951                                                 {
3952                                                         log(DEBUG,"dns done, registered=3, and modules ready, OK");
3953                                                         FullConnectUser(count2->second);
3954                                                         goto label;
3955                                                 }
3956                                                 if ((TIME > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7))
3957                                                 {
3958                                                         if ((!count2->second->lastping) && (count2->second->registered == 7))
3959                                                         {
3960                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",count2->second->nick);
3961                                                                 kill_link(count2->second,"Ping timeout");
3962                                                                 goto label;
3963                                                         }
3964                                                         Write(count2->second->fd,"PING :%s",ServerName);
3965                                                         log(DEBUG,"InspIRCd: pinging: %s",count2->second->nick);
3966                                                         count2->second->lastping = 0;
3967                                                         count2->second->nping = TIME+count2->second->pingmax;   // was hard coded to 120
3968                                                 }
3969                                         }
3970                                         count2++;
3971                                         total_in_this_set++;
3972                                 }
3973                                 else break;
3974                         }
3975
3976                         endingiter = count2;
3977                         count2 = xcount; // roll back to where we were
3978
3979                         v = 0;
3980
3981                         // tvals defined here
3982
3983                         tval.tv_usec = 1000L;
3984                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
3985
3986                         // now loop through all of the items in this pool if any are waiting
3987                         //if (selectResult2 > 0)
3988                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
3989                         {
3990
3991 #ifdef _POSIX_PRIORITY_SCHEDULING
3992                                 sched_yield();
3993 #endif
3994
3995                                 result = EAGAIN;
3996                                 if ((count2a->second->fd != FD_MAGIC_NUMBER) && (count2a->second->fd != -1) && (FD_ISSET (count2a->second->fd, &sfd)))
3997                                 {
3998                                         memset(data, 0, 10240);
3999                                         result = read(count2a->second->fd, data, 10240);
4000
4001                                         if (result)
4002                                         {
4003                                                 // perform a check on the raw buffer as an array (not a string!) to remove
4004                                                 // characters 0 and 7 which are illegal in the RFC - replace them with spaces.
4005                                                 // hopefully this should stop even more people whining about "Unknown command: *"
4006                                                 for (int checker = 0; checker < result; checker++)
4007                                                 {
4008                                                         if ((data[checker] == 0) || (data[checker] == 7))
4009                                                                 data[checker] = ' ';
4010                                                 }
4011                                                 userrec* current = count2a->second;
4012                                                 int currfd = current->fd;
4013                                                 char* l = strtok(data,"\n");
4014                                                 int floodlines = 0;
4015                                                 while (l)
4016                                                 {
4017                                                         floodlines++;
4018                                                         if ((floodlines > current->flood) && (current->flood != 0))
4019                                                         {
4020                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4021                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4022                                                                 kill_link(current,"Excess flood");
4023                                                                 goto label;
4024                                                         }
4025                                                         char sanitized[NetBufferSize];
4026                                                         memset(sanitized, 0, NetBufferSize);
4027                                                         int ptt = 0;
4028                                                         for (int pt = 0; pt < strlen(l); pt++)
4029                                                         {
4030                                                                 if (l[pt] != '\r')
4031                                                                 {
4032                                                                         sanitized[ptt++] = l[pt];
4033                                                                 }
4034                                                         }
4035                                                         sanitized[ptt] = '\0';
4036                                                         if (*sanitized)
4037                                                         {
4038
4039
4040                                                                 // we're gonna re-scan to check if the nick is gone, after every
4041                                                                 // command - if it has, we're gonna bail
4042                                                                 bool find_again = false;
4043                                                                 process_buffer(sanitized,current);
4044
4045                                                                 // look for the user's record in case it's changed
4046                                                                 for (user_hash::iterator c2 = clientlist.begin(); c2 != clientlist.end(); c2++)
4047                                                                 {
4048                                                                         if (c2->second->fd == currfd)
4049                                                                         {
4050                                                                                 // found again, update pointer
4051                                                                                 current == c2->second;
4052                                                                                 find_again = true;
4053                                                                                 break;
4054                                                                         }
4055                                                                 }
4056                                                                 if (!find_again)
4057                                                                         goto label;
4058
4059                                                         }
4060                                                         l = strtok(NULL,"\n");
4061                                                 }
4062                                                 goto label;
4063                                         }
4064
4065                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
4066                                         {
4067                                                 log(DEBUG,"killing: %s",count2a->second->nick);
4068                                                 kill_link(count2a->second,strerror(errno));
4069                                                 goto label;
4070                                         }
4071                                 }
4072                                 // result EAGAIN means nothing read
4073                                 if (result == EAGAIN)
4074                                 {
4075                                 }
4076                                 else
4077                                 if (result == 0)
4078                                 {
4079                                         if (count2->second)
4080                                         {
4081                                                 log(DEBUG,"InspIRCd: Exited: %s",count2a->second->nick);
4082                                                 kill_link(count2a->second,"Client exited");
4083                                                 // must bail here? kill_link removes the hash, corrupting the iterator
4084                                                 log(DEBUG,"Bailing from client exit");
4085                                                 goto label;
4086                                         }
4087                                 }
4088                                 else if (result > 0)
4089                                 {
4090                                 }
4091                         }
4092                 }
4093                 for (int q = 0; q < total_in_this_set; q++)
4094                 {
4095                         count2++;
4096                 }
4097         }
4098
4099 #ifdef _POSIX_PRIORITY_SCHEDULING
4100         sched_yield();
4101 #endif
4102
4103         // set up select call
4104         for (count = 0; count < boundPortCount; count++)
4105         {
4106                 FD_SET (openSockfd[count], &selectFds);
4107         }
4108
4109         tv.tv_usec = 30000L;
4110         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
4111
4112         /* select is reporting a waiting socket. Poll them all to find out which */
4113         if (selectResult > 0)
4114         {
4115                 char target[MAXBUF], resolved[MAXBUF];
4116                 for (count = 0; count < boundPortCount; count++)
4117                 {
4118                         if (FD_ISSET (openSockfd[count], &selectFds))
4119                         {
4120                                 length = sizeof (client);
4121                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
4122
4123                                 strlcpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
4124                                 strlcpy (resolved, target, MAXBUF);
4125
4126                                 if (incomingSockfd < 0)
4127                                 {
4128                                         WriteOpers("*** WARNING: Accept failed on port %lu (%s)",(unsigned long)ports[count],target);
4129                                         log(DEBUG,"InspIRCd: accept failed: %lu",(unsigned long)ports[count]);
4130                                 }
4131                                 else
4132                                 {
4133                                         AddClient(incomingSockfd, resolved, ports[count], false, inet_ntoa (client.sin_addr));
4134                                         log(DEBUG,"InspIRCd: adding client on port %lu fd=%lu",(unsigned long)ports[count],(unsigned long)incomingSockfd);
4135                                 }
4136                                 goto label;
4137                         }
4138                 }
4139         }
4140         label:
4141         if (0) {};
4142 #ifdef _POSIX_PRIORITY_SCHEDULING
4143         sched_yield();
4144 #endif
4145 }
4146 /* not reached */
4147 close (incomingSockfd);
4148 }
4149