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