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, userrec* user, char* text, ...)
 732 {
 733         if ((!Ptr) || (!user) || (!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 (iter != clientlist.end())
2087         {
2088                 log(DEBUG,"deleting user hash value %lu",(unsigned long)iter->second);
2089                 if ((iter->second) && (user->registered == 7)) {
2090                         if (iter->second) delete iter->second;
2091                 }
2092                 clientlist.erase(iter);
2093         }
2094
2095         if (user->registered == 7) {
2096                 purge_empty_chans(user);
2097         }
2098         delete user;
2099         //user = NULL;
2100 }
2101
2102 void kill_link_silent(userrec *user,const char* r)
2103 {
2104         user_hash::iterator iter = clientlist.find(user->nick);
2105
2106         char reason[MAXBUF];
2107
2108         strncpy(reason,r,MAXBUF);
2109
2110         if (strlen(reason)>MAXQUIT)
2111         {
2112                 reason[MAXQUIT-1] = '\0';
2113         }
2114
2115         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2116         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2117         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
2118
2119         /* bugfix, cant close() a nonblocking socket (sux!) */
2120         if (user->registered == 7) {
2121                 FOREACH_MOD OnUserQuit(user);
2122                 WriteCommonExcept(user,"QUIT :%s",reason);
2123
2124                 // Q token must go to ALL servers!!!
2125                 char buffer[MAXBUF];
2126                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2127                 NetSendToAll(buffer);
2128         }
2129
2130         FOREACH_MOD OnUserDisconnect(user);
2131
2132         if (user->fd > -1)
2133         {
2134                 shutdown(user->fd,2);
2135                 close(user->fd);
2136         }
2137
2138         if (iter != clientlist.end())
2139         {
2140                 log(DEBUG,"deleting user hash value %lu",(unsigned long)iter->second);
2141                 if ((iter->second) && (user->registered == 7)) {
2142                         if (iter->second) delete iter->second;
2143                 }
2144                 clientlist.erase(iter);
2145         }
2146
2147         if (user->registered == 7) {
2148                 purge_empty_chans(user);
2149         }
2150         delete user;
2151 }
2152
2153
2154
2155 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
2156
2157 char* Passwd(userrec *user)
2158 {
2159         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2160         {
2161                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
2162                 {
2163                         return i->pass;
2164                 }
2165         }
2166         return "";
2167 }
2168
2169 bool IsDenied(userrec *user)
2170 {
2171         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2172         {
2173                 if (match(user->host,i->host) && (i->type == CC_DENY))
2174                 {
2175                         return true;
2176                 }
2177         }
2178         return false;
2179 }
2180
2181
2182
2183
2184 /* sends out an error notice to all connected clients (not to be used
2185  * lightly!) */
2186
2187 void send_error(char *s)
2188 {
2189         log(DEBUG,"send_error: %s",s);
2190         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2191         {
2192                 if (isnick(i->second->nick))
2193                 {
2194                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
2195                 }
2196                 else
2197                 {
2198                         // fix - unregistered connections receive ERROR, not NOTICE
2199                         Write(i->second->fd,"ERROR :%s",s);
2200                 }
2201         }
2202 }
2203
2204 void Error(int status)
2205 {
2206         signal (SIGALRM, SIG_IGN);
2207         signal (SIGPIPE, SIG_IGN);
2208         signal (SIGTERM, SIG_IGN);
2209         signal (SIGABRT, SIG_IGN);
2210         signal (SIGSEGV, SIG_IGN);
2211         signal (SIGURG, SIG_IGN);
2212         signal (SIGKILL, SIG_IGN);
2213         log(DEFAULT,"*** fell down a pothole in the road to perfection ***");
2214         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
2215         Exit(status);
2216 }
2217
2218
2219 int main(int argc, char **argv)
2220 {
2221         Start();
2222         srand(time(NULL));
2223         log(DEBUG,"*** InspIRCd starting up!");
2224         if (!FileExists(CONFIG_FILE))
2225         {
2226                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
2227                 log(DEFAULT,"main: no config");
2228                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
2229                 Exit(ERROR);
2230         }
2231         if (argc > 1) {
2232                 for (int i = 1; i < argc; i++)
2233                 {
2234                         if (!strcmp(argv[i],"-nofork")) {
2235                                 nofork = true;
2236                         }
2237                         if (!strcmp(argv[i],"-wait")) {
2238                                 sleep(6);
2239                         }
2240                         if (!strcmp(argv[i],"-nolimit")) {
2241                                 unlimitcore = true;
2242                         }
2243                 }
2244         }
2245         strlcpy(MyExecutable,argv[0],MAXBUF);
2246
2247         if (InspIRCd() == ERROR)
2248         {
2249                 log(DEFAULT,"main: daemon function bailed");
2250                 printf("ERROR: could not initialise. Shutting down.\n");
2251                 Exit(ERROR);
2252         }
2253         Exit(TRUE);
2254         return 0;
2255 }
2256
2257 template<typename T> inline string ConvToStr(const T &in)
2258 {
2259         stringstream tmp;
2260         if (!(tmp << in)) return string();
2261         return tmp.str();
2262 }
2263
2264 /* re-allocates a nick in the user_hash after they change nicknames,
2265  * returns a pointer to the new user as it may have moved */
2266
2267 userrec* ReHashNick(char* Old, char* New)
2268 {
2269         //user_hash::iterator newnick;
2270         user_hash::iterator oldnick = clientlist.find(Old);
2271
2272         log(DEBUG,"ReHashNick: %s %s",Old,New);
2273
2274         if (!strcasecmp(Old,New))
2275         {
2276                 log(DEBUG,"old nick is new nick, skipping");
2277                 return oldnick->second;
2278         }
2279
2280         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
2281
2282         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
2283
2284         clientlist[New] = new userrec();
2285         clientlist[New] = oldnick->second;
2286         clientlist.erase(oldnick);
2287
2288         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
2289
2290         return clientlist[New];
2291 }
2292
2293 /* adds or updates an entry in the whowas list */
2294 void AddWhoWas(userrec* u)
2295 {
2296         user_hash::iterator iter = whowas.find(u->nick);
2297         userrec *a = new userrec();
2298         strlcpy(a->nick,u->nick,NICKMAX);
2299         strlcpy(a->ident,u->ident,64);
2300         strlcpy(a->dhost,u->dhost,256);
2301         strlcpy(a->host,u->host,256);
2302         strlcpy(a->fullname,u->fullname,128);
2303         strlcpy(a->server,u->server,256);
2304         a->signon = u->signon;
2305
2306         /* MAX_WHOWAS:   max number of /WHOWAS items
2307          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
2308          *               can be replaced by a newer one
2309          */
2310
2311         if (iter == whowas.end())
2312         {
2313                 if (whowas.size() == WHOWAS_MAX)
2314                 {
2315                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
2316                         {
2317                                 // 3600 seconds in an hour ;)
2318                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
2319                                 {
2320                                         if (i->second) delete i->second;
2321                                         i->second = a;
2322                                         log(DEBUG,"added WHOWAS entry, purged an old record");
2323                                         return;
2324                                 }
2325                         }
2326                 }
2327                 else
2328                 {
2329                         log(DEBUG,"added fresh WHOWAS entry");
2330                         whowas[a->nick] = a;
2331                 }
2332         }
2333         else
2334         {
2335                 log(DEBUG,"updated WHOWAS entry");
2336                 if (iter->second) delete iter->second;
2337                 iter->second = a;
2338         }
2339 }
2340
2341
2342 /* add a client connection to the sockets list */
2343 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
2344 {
2345         string tempnick;
2346         char tn2[MAXBUF];
2347         user_hash::iterator iter;
2348
2349         tempnick = ConvToStr(socket) + "-unknown";
2350         sprintf(tn2,"%lu-unknown",(unsigned long)socket);
2351
2352         iter = clientlist.find(tempnick);
2353
2354         if (iter != clientlist.end()) return;
2355
2356         /*
2357          * It is OK to access the value here this way since we know
2358          * it exists, we just created it above.
2359          *
2360          * At NO other time should you access a value in a map or a
2361          * hash_map this way.
2362          */
2363         clientlist[tempnick] = new userrec();
2364
2365         NonBlocking(socket);
2366         log(DEBUG,"AddClient: %lu %s %d %s",(unsigned long)socket,host,port,ip);
2367
2368         clientlist[tempnick]->fd = socket;
2369         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
2370         strncpy(clientlist[tempnick]->host, host,160);
2371         strncpy(clientlist[tempnick]->dhost, host,160);
2372         strncpy(clientlist[tempnick]->server, ServerName,256);
2373         strncpy(clientlist[tempnick]->ident, "unknown",12);
2374         clientlist[tempnick]->registered = 0;
2375         clientlist[tempnick]->signon = TIME+dns_timeout;
2376         clientlist[tempnick]->lastping = 1;
2377         clientlist[tempnick]->port = port;
2378         strncpy(clientlist[tempnick]->ip,ip,32);
2379
2380         // set the registration timeout for this user
2381         unsigned long class_regtimeout = 90;
2382         int class_flood = 0;
2383
2384         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2385         {
2386                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2387                 {
2388                         class_regtimeout = (unsigned long)i->registration_timeout;
2389                         class_flood = i->flood;
2390                         clientlist[tempnick]->pingmax = i->pingtime;
2391                         break;
2392                 }
2393         }
2394
2395         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax+dns_timeout;
2396         clientlist[tempnick]->timeout = TIME+class_regtimeout;
2397         clientlist[tempnick]->flood = class_flood;
2398
2399         for (int i = 0; i < MAXCHANS; i++)
2400         {
2401                 clientlist[tempnick]->chans[i].channel = NULL;
2402                 clientlist[tempnick]->chans[i].uc_modes = 0;
2403         }
2404
2405         if (clientlist.size() == MAXCLIENTS)
2406                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
2407
2408
2409         char* e = matches_exception(ip);
2410         if (!e)
2411         {
2412                 char* r = matches_zline(ip);
2413                 if (r)
2414                 {
2415                         char reason[MAXBUF];
2416                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
2417                         kill_link(clientlist[tempnick],reason);
2418                 }
2419         }
2420 }
2421
2422 // this function counts all users connected, wether they are registered or NOT.
2423 int usercnt(void)
2424 {
2425         return clientlist.size();
2426 }
2427
2428 // this counts only registered users, so that the percentages in /MAP don't mess up when users are sitting in an unregistered state
2429 int registered_usercount(void)
2430 {
2431         int c = 0;
2432         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2433         {
2434                 if ((i->second->fd) && (isnick(i->second->nick))) c++;
2435         }
2436         return c;
2437 }
2438
2439 int usercount_invisible(void)
2440 {
2441         int c = 0;
2442
2443         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2444         {
2445                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
2446         }
2447         return c;
2448 }
2449
2450 int usercount_opers(void)
2451 {
2452         int c = 0;
2453
2454         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2455         {
2456                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
2457         }
2458         return c;
2459 }
2460
2461 int usercount_unknown(void)
2462 {
2463         int c = 0;
2464
2465         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2466         {
2467                 if ((i->second->fd) && (i->second->registered != 7))
2468                         c++;
2469         }
2470         return c;
2471 }
2472
2473 long chancount(void)
2474 {
2475         return chanlist.size();
2476 }
2477
2478 long count_servs(void)
2479 {
2480         int c = 0;
2481         for (int i = 0; i < 32; i++)
2482         {
2483                 if (me[i] != NULL)
2484                 {
2485                         for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2486                         {
2487                                 if (strcasecmp(j->GetServerName().c_str(),ServerName))
2488                                 {
2489                                         c++;
2490                                 }
2491                         }
2492                 }
2493         }
2494         return c;
2495 }
2496
2497 long servercount(void)
2498 {
2499         return count_servs()+1;
2500 }
2501
2502 long local_count()
2503 {
2504         int c = 0;
2505         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2506         {
2507                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
2508         }
2509         return c;
2510 }
2511
2512
2513 void ShowMOTD(userrec *user)
2514 {
2515         std::string WholeMOTD = "";
2516         if (!MOTD.size())
2517         {
2518                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
2519                 return;
2520         }
2521         WholeMOTD = std::string(":") + std::string(ServerName) + std::string(" 375 ") + std::string(user->nick) + std::string(" :- ") + std::string(ServerName) + " message of the day\r\n";
2522         for (int i = 0; i != MOTD.size(); i++)
2523         {
2524                 WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 372 ") + std::string(user->nick) + std::string(" :- ") + MOTD[i] + std::string("\r\n");
2525         }
2526         WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 376 ") + std::string(user->nick) + std::string(" :End of message of the day.\r\n");
2527         // only one write operation
2528         send(user->fd,WholeMOTD.c_str(),WholeMOTD.length(),0);
2529
2530 }
2531
2532 void ShowRULES(userrec *user)
2533 {
2534         if (!RULES.size())
2535         {
2536                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
2537                 return;
2538         }
2539         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
2540         for (int i = 0; i != RULES.size(); i++)
2541         {
2542                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
2543         }
2544         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
2545 }
2546
2547 /* shows the message of the day, and any other on-logon stuff */
2548 void FullConnectUser(userrec* user)
2549 {
2550         user->registered = 7;
2551         user->idle_lastmsg = TIME;
2552         log(DEBUG,"ConnectUser: %s",user->nick);
2553
2554         if ((strcmp(Passwd(user),"")) && (!user->haspassed))
2555         {
2556                 kill_link(user,"Invalid password");
2557                 return;
2558         }
2559         if (IsDenied(user))
2560         {
2561                 kill_link(user,"Unauthorised connection");
2562                 return;
2563         }
2564
2565         char match_against[MAXBUF];
2566         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
2567         char* e = matches_exception(match_against);
2568         if (!e)
2569         {
2570                 char* r = matches_gline(match_against);
2571                 if (r)
2572                 {
2573                         char reason[MAXBUF];
2574                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
2575                         kill_link_silent(user,reason);
2576                         return;
2577                 }
2578                 r = matches_kline(user->host);
2579                 if (r)
2580                 {
2581                         char reason[MAXBUF];
2582                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
2583                         kill_link_silent(user,reason);
2584                         return;
2585                 }
2586         }
2587
2588         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
2589         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
2590         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
2591         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
2592         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
2593         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
2594         std::stringstream v;
2595         v << "MESHED WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
2596         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
2597         v << " TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 CHANMODES=ohvb,k,l,psmnti NETWORK=";
2598         v << std::string(Network);
2599         std::string data005 = v.str();
2600         FOREACH_MOD On005Numeric(data005);
2601         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
2602         // so i'd better split it :)
2603         std::stringstream out(data005);
2604         std::string token = "";
2605         std::string line5 = "";
2606         int token_counter = 0;
2607         while (!out.eof())
2608         {
2609                 out >> token;
2610                 line5 = line5 + token + " ";
2611                 token_counter++;
2612                 if ((token_counter >= 13) || (out.eof() == true))
2613                 {
2614                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
2615                         line5 = "";
2616                         token_counter = 0;
2617                 }
2618         }
2619         ShowMOTD(user);
2620         FOREACH_MOD OnUserConnect(user);
2621         WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,user->ip);
2622
2623         char buffer[MAXBUF];
2624         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);
2625         NetSendToAll(buffer);
2626 }
2627
2628
2629 // this returns 1 when all modules are satisfied that the user should be allowed onto the irc server
2630 // (until this returns true, a user will block in the waiting state, waiting to connect up to the
2631 // registration timeout maximum seconds)
2632 bool AllModulesReportReady(userrec* user)
2633 {
2634         for (int i = 0; i <= MODCOUNT; i++)
2635         {
2636                 int res = modules[i]->OnCheckReady(user);
2637                         if (!res)
2638                                 return false;
2639         }
2640         return true;
2641 }
2642
2643 /* shows the message of the day, and any other on-logon stuff */
2644 void ConnectUser(userrec *user)
2645 {
2646         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
2647         if ((user->dns_done) && (user->registered >= 3) && (AllModulesReportReady(user)))
2648         {
2649                 FullConnectUser(user);
2650         }
2651 }
2652
2653 void handle_version(char **parameters, int pcnt, userrec *user)
2654 {
2655         char Revision[] = "$Revision$";
2656
2657         char *s1 = Revision;
2658         char *savept;
2659         char *v2 = strtok_r(s1," ",&savept);
2660         s1 = savept;
2661         v2 = strtok_r(s1," ",&savept);
2662         s1 = savept;
2663
2664         WriteServ(user->fd,"351 %s :%s Rev. %s %s :%s (O=%lu)",user->nick,VERSION,v2,ServerName,SYSTEM,(unsigned long)OPTIMISATION);
2665 }
2666
2667
2668 // calls a handler function for a command
2669
2670 void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
2671 {
2672                 for (int i = 0; i < cmdlist.size(); i++)
2673                 {
2674                         if (!strcasecmp(cmdlist[i].command,commandname))
2675                         {
2676                                 if (cmdlist[i].handler_function)
2677                                 {
2678                                         if (pcnt>=cmdlist[i].min_params)
2679                                         {
2680                                                 if (strchr(user->modes,cmdlist[i].flags_needed))
2681                                                 {
2682                                                         cmdlist[i].handler_function(parameters,pcnt,user);
2683                                                 }
2684                                         }
2685                                 }
2686                         }
2687                 }
2688 }
2689
2690 void DoSplitEveryone()
2691 {
2692         bool go_again = true;
2693         while (go_again)
2694         {
2695                 go_again = false;
2696                 for (int i = 0; i < 32; i++)
2697                 {
2698                         if (me[i] != NULL)
2699                         {
2700                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2701                                 {
2702                                         if (strcasecmp(j->GetServerName().c_str(),ServerName))
2703                                         {
2704                                                 j->routes.clear();
2705                                                 j->CloseConnection();
2706                                                 me[i]->connectors.erase(j);
2707                                                 go_again = true;
2708                                                 break;
2709                                         }
2710                                 }
2711                         }
2712                 }
2713         }
2714         log(DEBUG,"Removed server. Will remove clients...");
2715         // iterate through the userlist and remove all users on this server.
2716         // because we're dealing with a mesh, we dont have to deal with anything
2717         // "down-route" from this server (nice huh)
2718         go_again = true;
2719         char reason[MAXBUF];
2720         while (go_again)
2721         {
2722                 go_again = false;
2723                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
2724                 {
2725                         if (strcasecmp(u->second->server,ServerName))
2726                         {
2727                                 snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server);
2728                                 kill_link(u->second,reason);
2729                                 go_again = true;
2730                                 break;
2731                         }
2732                 }
2733         }
2734 }
2735
2736
2737
2738 char islast(const char* s)
2739 {
2740         char c = '`';
2741         for (int j = 0; j < 32; j++)
2742         {
2743                 if (me[j] != NULL)
2744                 {
2745                         for (int k = 0; k < me[j]->connectors.size(); k++)
2746                         {
2747                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2748                                 {
2749                                         c = '|';
2750                                 }
2751                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2752                                 {
2753                                         c = '`';
2754                                 }
2755                         }
2756                 }
2757         }
2758         return c;
2759 }
2760
2761 long map_count(const char* s)
2762 {
2763         int c = 0;
2764         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2765         {
2766                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
2767         }
2768         return c;
2769 }
2770
2771
2772 void force_nickchange(userrec* user,const char* newnick)
2773 {
2774         char nick[MAXBUF];
2775         int MOD_RESULT = 0;
2776
2777         strcpy(nick,"");
2778
2779         FOREACH_RESULT(OnUserPreNick(user,newnick));
2780         if (MOD_RESULT) {
2781                 kill_link(user,"Nickname collision");
2782                 return;
2783         }
2784         if (matches_qline(newnick))
2785         {
2786                 kill_link(user,"Nickname collision");
2787                 return;
2788         }
2789
2790         if (user)
2791         {
2792                 if (newnick)
2793                 {
2794                         strncpy(nick,newnick,MAXBUF);
2795                 }
2796                 if (user->registered == 7)
2797                 {
2798                         char* pars[1];
2799                         pars[0] = nick;
2800                         handle_nick(pars,1,user);
2801                 }
2802         }
2803 }
2804
2805
2806 int process_parameters(char **command_p,char *parameters)
2807 {
2808         int j = 0;
2809         int q = strlen(parameters);
2810         if (!q)
2811         {
2812                 /* no parameters, command_p invalid! */
2813                 return 0;
2814         }
2815         if (parameters[0] == ':')
2816         {
2817                 command_p[0] = parameters+1;
2818                 return 1;
2819         }
2820         if (q)
2821         {
2822                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
2823                 {
2824                         /* only one parameter */
2825                         command_p[0] = parameters;
2826                         if (parameters[0] == ':')
2827                         {
2828                                 if (strchr(parameters,' ') != NULL)
2829                                 {
2830                                         command_p[0]++;
2831                                 }
2832                         }
2833                         return 1;
2834                 }
2835         }
2836         command_p[j++] = parameters;
2837         for (int i = 0; i <= q; i++)
2838         {
2839                 if (parameters[i] == ' ')
2840                 {
2841                         command_p[j++] = parameters+i+1;
2842                         parameters[i] = '\0';
2843                         if (command_p[j-1][0] == ':')
2844                         {
2845                                 *command_p[j-1]++; /* remove dodgy ":" */
2846                                 break;
2847                                 /* parameter like this marks end of the sequence */
2848                         }
2849                 }
2850         }
2851         return j; /* returns total number of items in the list */
2852 }
2853
2854 void process_command(userrec *user, char* cmd)
2855 {
2856         char *parameters;
2857         char *command;
2858         char *command_p[127];
2859         char p[MAXBUF], temp[MAXBUF];
2860         int j, items, cmd_found;
2861
2862         for (int i = 0; i < 127; i++)
2863                 command_p[i] = NULL;
2864
2865         if (!user)
2866         {
2867                 return;
2868         }
2869         if (!cmd)
2870         {
2871                 return;
2872         }
2873         if (!cmd[0])
2874         {
2875                 return;
2876         }
2877
2878         int total_params = 0;
2879         if (strlen(cmd)>2)
2880         {
2881                 for (int q = 0; q < strlen(cmd)-1; q++)
2882                 {
2883                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
2884                         {
2885                                 total_params++;
2886                                 // found a 'trailing', we dont count them after this.
2887                                 break;
2888                         }
2889                         if (cmd[q] == ' ')
2890                                 total_params++;
2891                 }
2892         }
2893
2894         // another phidjit bug...
2895         if (total_params > 126)
2896         {
2897                 *(strchr(cmd,' ')) = '\0';
2898                 WriteServ(user->fd,"421 %s %s :Too many parameters given",user->nick,cmd);
2899                 return;
2900         }
2901
2902         strlcpy(temp,cmd,MAXBUF);
2903
2904         std::string tmp = cmd;
2905         for (int i = 0; i <= MODCOUNT; i++)
2906         {
2907                 std::string oldtmp = tmp;
2908                 modules[i]->OnServerRaw(tmp,true,user);
2909                 if (oldtmp != tmp)
2910                 {
2911                         log(DEBUG,"A Module changed the input string!");
2912                         log(DEBUG,"New string: %s",tmp.c_str());
2913                         log(DEBUG,"Old string: %s",oldtmp.c_str());
2914                         break;
2915                 }
2916         }
2917         strlcpy(cmd,tmp.c_str(),MAXBUF);
2918         strlcpy(temp,cmd,MAXBUF);
2919
2920         if (!strchr(cmd,' '))
2921         {
2922                 /* no parameters, lets skip the formalities and not chop up
2923                  * the string */
2924                 log(DEBUG,"About to preprocess command with no params");
2925                 items = 0;
2926                 command_p[0] = NULL;
2927                 parameters = NULL;
2928                 for (int i = 0; i <= strlen(cmd); i++)
2929                 {
2930                         cmd[i] = toupper(cmd[i]);
2931                 }
2932                 command = cmd;
2933         }
2934         else
2935         {
2936                 strcpy(cmd,"");
2937                 j = 0;
2938                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
2939                 for (int i = 0; i < strlen(temp); i++)
2940                 {
2941                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
2942                         {
2943                                 cmd[j++] = temp[i];
2944                                 cmd[j] = 0;
2945                         }
2946                 }
2947                 /* split the full string into a command plus parameters */
2948                 parameters = p;
2949                 strcpy(p," ");
2950                 command = cmd;
2951                 if (strchr(cmd,' '))
2952                 {
2953                         for (int i = 0; i <= strlen(cmd); i++)
2954                         {
2955                                 /* capitalise the command ONLY, leave params intact */
2956                                 cmd[i] = toupper(cmd[i]);
2957                                 /* are we nearly there yet?! :P */
2958                                 if (cmd[i] == ' ')
2959                                 {
2960                                         command = cmd;
2961                                         parameters = cmd+i+1;
2962                                         cmd[i] = '\0';
2963                                         break;
2964                                 }
2965                         }
2966                 }
2967                 else
2968                 {
2969                         for (int i = 0; i <= strlen(cmd); i++)
2970                         {
2971                                 cmd[i] = toupper(cmd[i]);
2972                         }
2973                 }
2974
2975         }
2976         cmd_found = 0;
2977
2978         if (strlen(command)>MAXCOMMAND)
2979         {
2980                 WriteServ(user->fd,"421 %s %s :Command too long",user->nick,command);
2981                 return;
2982         }
2983
2984         for (int x = 0; x < strlen(command); x++)
2985         {
2986                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
2987                 {
2988                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
2989                         {
2990                                 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
2991                                 {
2992                                         WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
2993                                         return;
2994                                 }
2995                         }
2996                 }
2997         }
2998
2999         for (int i = 0; i != cmdlist.size(); i++)
3000         {
3001                 if (cmdlist[i].command[0])
3002                 {
3003                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
3004                         {
3005                                 log(DEBUG,"Found matching command");
3006
3007                                 if (parameters)
3008                                 {
3009                                         if (parameters[0])
3010                                         {
3011                                                 items = process_parameters(command_p,parameters);
3012                                         }
3013                                         else
3014                                         {
3015                                                 items = 0;
3016                                                 command_p[0] = NULL;
3017                                         }
3018                                 }
3019                                 else
3020                                 {
3021                                         items = 0;
3022                                         command_p[0] = NULL;
3023                                 }
3024
3025                                 if (user)
3026                                 {
3027                                         log(DEBUG,"Processing command");
3028
3029                                         /* activity resets the ping pending timer */
3030                                         user->nping = TIME + user->pingmax;
3031                                         if ((items) < cmdlist[i].min_params)
3032                                         {
3033                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
3034                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
3035                                                 return;
3036                                         }
3037                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
3038                                         {
3039                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3040                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
3041                                                 cmd_found = 1;
3042                                                 return;
3043                                         }
3044                                         if ((cmdlist[i].flags_needed) && (!user->HasPermission(command)))
3045                                         {
3046                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3047                                                 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
3048                                                 cmd_found = 1;
3049                                                 return;
3050                                         }
3051                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
3052                                          * deny command! */
3053                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
3054                                         {
3055                                                 if ((!isnick(user->nick)) || (user->registered != 7))
3056                                                 {
3057                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
3058                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
3059                                                         return;
3060                                                 }
3061                                         }
3062                                         if ((user->registered == 7) && (!strchr(user->modes,'o')))
3063                                         {
3064                                                 char* mycmd;
3065                                                 char* savept2;
3066                                                 mycmd = strtok_r(DisabledCommands," ",&savept2);
3067                                                 while (mycmd)
3068                                                 {
3069                                                         if (!strcasecmp(mycmd,command))
3070                                                         {
3071                                                                 // command is disabled!
3072                                                                 WriteServ(user->fd,"421 %s %s :This command has been disabled.",user->nick,command);
3073                                                                 return;
3074                                                         }
3075                                                         mycmd = strtok_r(NULL," ",&savept2);
3076                                                 }
3077
3078
3079                                         }
3080                                         if ((user->registered == 7) || (!strncmp(command,"USER",4)) || (!strncmp(command,"NICK",4)) || (!strncmp(command,"PASS",4)))
3081                                         {
3082                                                 log(DEBUG,"process_command: handler: %s %s %lu",user->nick,command,(unsigned long)items);
3083                                                 if (cmdlist[i].handler_function)
3084                                                 {
3085
3086                                                         /* ikky /stats counters */
3087                                                         if (temp)
3088                                                         {
3089                                                                 if (user)
3090                                                                 {
3091                                                                         user->bytes_in += strlen(temp);
3092                                                                         user->cmds_in++;
3093                                                                         user->bytes_out+=strlen(temp);
3094                                                                         user->cmds_out++;
3095                                                                 }
3096                                                                 cmdlist[i].use_count++;
3097                                                                 cmdlist[i].total_bytes+=strlen(temp);
3098                                                         }
3099
3100                                                         int MOD_RESULT = 0;
3101                                                         FOREACH_RESULT(OnPreCommand(command,command_p,items,user));
3102                                                         if (MOD_RESULT == 1) {
3103                                                                 return;
3104                                                         }
3105
3106                                                         /* WARNING: nothing may come after the
3107                                                          * command handler call, as the handler
3108                                                          * may free the user structure! */
3109
3110                                                         cmdlist[i].handler_function(command_p,items,user);
3111                                                 }
3112                                                 return;
3113                                         }
3114                                         else
3115                                         {
3116                                                 log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
3117                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
3118                                                 return;
3119                                         }
3120                                 }
3121                                 cmd_found = 1;
3122                         }
3123                 }
3124         }
3125         if ((!cmd_found) && (user))
3126         {
3127                 log(DEBUG,"process_command: not in table: %s %s",user->nick,command);
3128                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3129         }
3130 }
3131
3132
3133 void createcommand(char* cmd, handlerfunc f, char flags, int minparams,char* source)
3134 {
3135         command_t comm;
3136         /* create the command and push it onto the table */
3137         strlcpy(comm.command,cmd,MAXBUF);
3138         strlcpy(comm.source,source,MAXBUF);
3139         comm.handler_function = f;
3140         comm.flags_needed = flags;
3141         comm.min_params = minparams;
3142         comm.use_count = 0;
3143         comm.total_bytes = 0;
3144         cmdlist.push_back(comm);
3145         log(DEBUG,"Added command %s (%lu parameters)",cmd,(unsigned long)minparams);
3146 }
3147
3148 bool removecommands(const char* source)
3149 {
3150         bool go_again = true;
3151         while (go_again)
3152         {
3153                 go_again = false;
3154                 for (std::deque<command_t>::iterator i = cmdlist.begin(); i != cmdlist.end(); i++)
3155                 {
3156                         if (!strcmp(i->source,source))
3157                         {
3158                                 log(DEBUG,"removecommands(%s) Removing dependent command: %s",i->source,i->command);
3159                                 cmdlist.erase(i);
3160                                 go_again = true;
3161                                 break;
3162                         }
3163                 }
3164         }
3165         return true;
3166 }
3167
3168 void SetupCommandTable(void)
3169 {
3170         createcommand("USER",handle_user,0,4,"<core>");
3171         createcommand("NICK",handle_nick,0,1,"<core>");
3172         createcommand("QUIT",handle_quit,0,0,"<core>");
3173         createcommand("VERSION",handle_version,0,0,"<core>");
3174         createcommand("PING",handle_ping,0,1,"<core>");
3175         createcommand("PONG",handle_pong,0,1,"<core>");
3176         createcommand("ADMIN",handle_admin,0,0,"<core>");
3177         createcommand("PRIVMSG",handle_privmsg,0,2,"<core>");
3178         createcommand("INFO",handle_info,0,0,"<core>");
3179         createcommand("TIME",handle_time,0,0,"<core>");
3180         createcommand("WHOIS",handle_whois,0,1,"<core>");
3181         createcommand("WALLOPS",handle_wallops,'o',1,"<core>");
3182         createcommand("NOTICE",handle_notice,0,2,"<core>");
3183         createcommand("JOIN",handle_join,0,1,"<core>");
3184         createcommand("NAMES",handle_names,0,0,"<core>");
3185         createcommand("PART",handle_part,0,1,"<core>");
3186         createcommand("KICK",handle_kick,0,2,"<core>");
3187         createcommand("MODE",handle_mode,0,1,"<core>");
3188         createcommand("TOPIC",handle_topic,0,1,"<core>");
3189         createcommand("WHO",handle_who,0,1,"<core>");
3190         createcommand("MOTD",handle_motd,0,0,"<core>");
3191         createcommand("RULES",handle_rules,0,0,"<core>");
3192         createcommand("OPER",handle_oper,0,2,"<core>");
3193         createcommand("LIST",handle_list,0,0,"<core>");
3194         createcommand("DIE",handle_die,'o',1,"<core>");
3195         createcommand("RESTART",handle_restart,'o',1,"<core>");
3196         createcommand("KILL",handle_kill,'o',2,"<core>");
3197         createcommand("REHASH",handle_rehash,'o',0,"<core>");
3198         createcommand("LUSERS",handle_lusers,0,0,"<core>");
3199         createcommand("STATS",handle_stats,0,1,"<core>");
3200         createcommand("USERHOST",handle_userhost,0,1,"<core>");
3201         createcommand("AWAY",handle_away,0,0,"<core>");
3202         createcommand("ISON",handle_ison,0,0,"<core>");
3203         createcommand("SUMMON",handle_summon,0,0,"<core>");
3204         createcommand("USERS",handle_users,0,0,"<core>");
3205         createcommand("INVITE",handle_invite,0,2,"<core>");
3206         createcommand("PASS",handle_pass,0,1,"<core>");
3207         createcommand("TRACE",handle_trace,'o',0,"<core>");
3208         createcommand("WHOWAS",handle_whowas,0,1,"<core>");
3209         createcommand("CONNECT",handle_connect,'o',1,"<core>");
3210         createcommand("SQUIT",handle_squit,'o',0,"<core>");
3211         createcommand("MODULES",handle_modules,0,0,"<core>");
3212         createcommand("LINKS",handle_links,0,0,"<core>");
3213         createcommand("MAP",handle_map,0,0,"<core>");
3214         createcommand("KLINE",handle_kline,'o',1,"<core>");
3215         createcommand("GLINE",handle_gline,'o',1,"<core>");
3216         createcommand("ZLINE",handle_zline,'o',1,"<core>");
3217         createcommand("QLINE",handle_qline,'o',1,"<core>");
3218         createcommand("ELINE",handle_eline,'o',1,"<core>");
3219         createcommand("LOADMODULE",handle_loadmodule,'o',1,"<core>");
3220         createcommand("UNLOADMODULE",handle_unloadmodule,'o',1,"<core>");
3221         createcommand("SERVER",handle_server,0,0,"<core>");
3222 }
3223
3224 void process_buffer(const char* cmdbuf,userrec *user)
3225 {
3226         if (!user)
3227         {
3228                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3229                 return;
3230         }
3231         char cmd[MAXBUF];
3232         if (!cmdbuf)
3233         {
3234                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3235                 return;
3236         }
3237         if (!cmdbuf[0])
3238         {
3239                 return;
3240         }
3241         while (*cmdbuf == ' ') cmdbuf++; // strip leading spaces
3242
3243         strlcpy(cmd,cmdbuf,MAXBUF);
3244         if (!cmd[0])
3245         {
3246                 return;
3247         }
3248         int sl = strlen(cmd)-1;
3249         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3250         {
3251                 cmd[sl] = '\0';
3252         }
3253         sl = strlen(cmd)-1;
3254         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3255         {
3256                 cmd[sl] = '\0';
3257         }
3258         sl = strlen(cmd)-1;
3259         while (cmd[sl] == ' ') // strip trailing spaces
3260         {
3261                 cmd[sl] = '\0';
3262                 sl = strlen(cmd)-1;
3263         }
3264
3265         if (!cmd[0])
3266         {
3267                 return;
3268         }
3269         log(DEBUG,"InspIRCd: processing: %s %s",user->nick,cmd);
3270         tidystring(cmd);
3271         if ((user) && (cmd))
3272         {
3273                 process_command(user,cmd);
3274         }
3275 }
3276
3277 void DoSync(serverrec* serv, char* tcp_host)
3278 {
3279         char data[MAXBUF];
3280         log(DEBUG,"Sending sync");
3281         // send start of sync marker: Y <timestamp>
3282         // at this point the ircd receiving it starts broadcasting this netburst to all ircds
3283         // except the ones its receiving it from.
3284         snprintf(data,MAXBUF,"Y %lu",(unsigned long)TIME);
3285         serv->SendPacket(data,tcp_host);
3286         // send users and channels
3287         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
3288         {
3289                 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);
3290                 serv->SendPacket(data,tcp_host);
3291                 if (strchr(u->second->modes,'o'))
3292                 {
3293                         snprintf(data,MAXBUF,"| %s %s",u->second->nick,u->second->oper);
3294                         serv->SendPacket(data,tcp_host);
3295                 }
3296                 for (int i = 0; i <= MODCOUNT; i++)
3297                 {
3298                         string_list l = modules[i]->OnUserSync(u->second);
3299                         for (int j = 0; j < l.size(); j++)
3300                         {
3301                                 strlcpy(data,l[j].c_str(),MAXBUF);
3302                                 serv->SendPacket(data,tcp_host);
3303                         }
3304                 }
3305                 char* chl = chlist(u->second);
3306                 if (strcmp(chl,""))
3307                 {
3308                         snprintf(data,MAXBUF,"J %s %s",u->second->nick,chl);
3309                         serv->SendPacket(data,tcp_host);
3310                 }
3311         }
3312         // send channel modes, topics etc...
3313         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
3314         {
3315                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
3316                 serv->SendPacket(data,tcp_host);
3317                 for (int i = 0; i <= MODCOUNT; i++)
3318                 {
3319                         string_list l = modules[i]->OnChannelSync(c->second);
3320                         for (int j = 0; j < l.size(); j++)
3321                         {
3322                                 strlcpy(data,l[j].c_str(),MAXBUF);
3323                                 serv->SendPacket(data,tcp_host);
3324                         }
3325                 }
3326                 if (c->second->topic[0])
3327                 {
3328                         snprintf(data,MAXBUF,"T %lu %s %s :%s",(unsigned long)c->second->topicset,c->second->setby,c->second->name,c->second->topic);
3329                         serv->SendPacket(data,tcp_host);
3330                 }
3331                 // send current banlist
3332
3333                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
3334                 {
3335                         snprintf(data,MAXBUF,"M %s +b %s",c->second->name,b->data);
3336                         serv->SendPacket(data,tcp_host);
3337                 }
3338         }
3339         // sync global zlines, glines, etc
3340         sync_xlines(serv,tcp_host);
3341
3342         for (int j = 0; j < 32; j++)
3343         {
3344                 if (me[j] != NULL)
3345                 {
3346                         for (int k = 0; k < me[j]->connectors.size(); k++)
3347                         {
3348                                 if (is_uline(me[j]->connectors[k].GetServerName().c_str()))
3349                                 {
3350                                         snprintf(data,MAXBUF,"H %s",me[j]->connectors[k].GetServerName().c_str());
3351                                         serv->SendPacket(data,tcp_host);
3352                                         NetSendMyRoutingTable();
3353                                 }
3354                         }
3355                 }
3356         }
3357
3358         snprintf(data,MAXBUF,"F %lu",(unsigned long)TIME);
3359         serv->SendPacket(data,tcp_host);
3360         log(DEBUG,"Sent sync");
3361         // ircd sends its serverlist after the end of sync here
3362 }
3363
3364
3365 void NetSendMyRoutingTable()
3366 {
3367         // send out a line saying what is reachable to us.
3368         // E.g. if A is linked to B C and D, send out:
3369         // $ A B C D
3370         // if its only linked to B and D send out:
3371         // $ A B D
3372         // if it has no links, dont even send out the line at all.
3373         char buffer[MAXBUF];
3374         snprintf(buffer,MAXBUF,"$ %s",ServerName);
3375         bool sendit = false;
3376         for (int i = 0; i < 32; i++)
3377         {
3378                 if (me[i] != NULL)
3379                 {
3380                         for (int j = 0; j < me[i]->connectors.size(); j++)
3381                         {
3382                                 if ((me[i]->connectors[j].GetState() != STATE_DISCONNECTED) || (is_uline(me[i]->connectors[j].GetServerName().c_str())))
3383                                 {
3384                                         strlcat(buffer," ",MAXBUF);
3385                                         strlcat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF);
3386                                         sendit = true;
3387                                 }
3388                         }
3389                 }
3390         }
3391         if (sendit)
3392                 NetSendToAll(buffer);
3393 }
3394
3395
3396 void DoSplit(const char* params)
3397 {
3398         bool go_again = true;
3399         while (go_again)
3400         {
3401                 go_again = false;
3402                 for (int i = 0; i < 32; i++)
3403                 {
3404                         if (me[i] != NULL)
3405                         {
3406                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3407                                 {
3408                                         if (!strcasecmp(j->GetServerName().c_str(),params))
3409                                         {
3410                                                 j->routes.clear();
3411                                                 j->CloseConnection();
3412                                                 me[i]->connectors.erase(j);
3413                                                 go_again = true;
3414                                                 break;
3415                                         }
3416                                 }
3417                         }
3418                 }
3419         }
3420         log(DEBUG,"Removed server. Will remove clients...");
3421         // iterate through the userlist and remove all users on this server.
3422         // because we're dealing with a mesh, we dont have to deal with anything
3423         // "down-route" from this server (nice huh)
3424         go_again = true;
3425         char reason[MAXBUF];
3426         snprintf(reason,MAXBUF,"%s %s",ServerName,params);
3427         while (go_again)
3428         {
3429                 go_again = false;
3430                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3431                 {
3432                         if (!strcasecmp(u->second->server,params))
3433                         {
3434                                 kill_link(u->second,reason);
3435                                 go_again = true;
3436                                 break;
3437                         }
3438                 }
3439         }
3440 }
3441
3442 // removes a server. Will NOT remove its users!
3443
3444 void RemoveServer(const char* name)
3445 {
3446         bool go_again = true;
3447         while (go_again)
3448         {
3449                 go_again = false;
3450                 for (int i = 0; i < 32; i++)
3451                 {
3452                         if (me[i] != NULL)
3453                         {
3454                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3455                                 {
3456                                         if (!strcasecmp(j->GetServerName().c_str(),name))
3457                                         {
3458                                                 j->routes.clear();
3459                                                 j->CloseConnection();
3460                                                 me[i]->connectors.erase(j);
3461                                                 go_again = true;
3462                                                 break;
3463                                         }
3464                                 }
3465                         }
3466                 }
3467         }
3468 }
3469
3470
3471 char MODERR[MAXBUF];
3472
3473 char* ModuleError()
3474 {
3475         return MODERR;
3476 }
3477
3478 void erase_factory(int j)
3479 {
3480         int v = 0;
3481         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
3482         {
3483                 if (v == j)
3484                 {
3485                         factory.erase(t);
3486                         factory.push_back(NULL);
3487                         return;
3488                 }
3489                 v++;
3490         }
3491 }
3492
3493 void erase_module(int j)
3494 {
3495         int v1 = 0;
3496         for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
3497         {
3498                 if (v1 == j)
3499                 {
3500                         delete *m;
3501                         modules.erase(m);
3502                         modules.push_back(NULL);
3503                         break;
3504                 }
3505                 v1++;
3506         }
3507         int v2 = 0;
3508         for (std::vector<std::string>::iterator v = module_names.begin(); v != module_names.end(); v++)
3509         {
3510                 if (v2 == j)
3511                 {
3512                        module_names.erase(v);
3513                        break;
3514                 }
3515                 v2++;
3516         }
3517
3518 }
3519
3520 bool UnloadModule(const char* filename)
3521 {
3522         for (int j = 0; j != module_names.size(); j++)
3523         {
3524                 if (module_names[j] == std::string(filename))
3525                 {
3526                         if (modules[j]->GetVersion().Flags & VF_STATIC)
3527                         {
3528                                 log(DEFAULT,"Failed to unload STATIC module %s",filename);
3529                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
3530                                 return false;
3531                         }
3532                         // found the module
3533                         log(DEBUG,"Deleting module...");
3534                         erase_module(j);
3535                         log(DEBUG,"Erasing module entry...");
3536                         erase_factory(j);
3537                         log(DEBUG,"Removing dependent commands...");
3538                         removecommands(filename);
3539                         log(DEFAULT,"Module %s unloaded",filename);
3540                         MODCOUNT--;
3541                         return true;
3542                 }
3543         }
3544         log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
3545         snprintf(MODERR,MAXBUF,"Module not loaded");
3546         return false;
3547 }
3548
3549 bool DirValid(char* dirandfile)
3550 {
3551         char work[MAXBUF];
3552         strlcpy(work,dirandfile,MAXBUF);
3553         int p = strlen(work);
3554         // we just want the dir
3555         while (strlen(work))
3556         {
3557                 if (work[p] == '/')
3558                 {
3559                         work[p] = '\0';
3560                         break;
3561                 }
3562                 work[p--] = '\0';
3563         }
3564         log(DEBUG,"Dir valid: %s",work);
3565         char buffer[MAXBUF], otherdir[MAXBUF];
3566         // Get the current working directory
3567         if( getcwd( buffer, MAXBUF ) == NULL )
3568                 return false;
3569         chdir(work);
3570         if( getcwd( otherdir, MAXBUF ) == NULL )
3571                 return false;
3572         chdir(buffer);
3573         log(DEBUG,"Dir is really: %s",otherdir);
3574         if (strlen(otherdir) >= strlen(work))
3575         {
3576                 otherdir[strlen(work)] = '\0';
3577                 log(DEBUG,"Compare: '%s' -> '%s'",otherdir,work);
3578                 if (!strcmp(otherdir,work))
3579                 {
3580                         log(DEBUG,"Match ok");
3581                         return true;
3582                 }
3583                 log(DEBUG,"No match");
3584                 return false;
3585         }
3586         else return false;
3587 }
3588
3589 bool LoadModule(const char* filename)
3590 {
3591         char modfile[MAXBUF];
3592         snprintf(modfile,MAXBUF,"%s/%s",ModPath,filename);
3593         if (!DirValid(modfile))
3594         {
3595                 log(DEFAULT,"Module %s is not within the modules directory.",modfile);
3596                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
3597                 return false;
3598         }
3599         log(DEBUG,"Loading module: %s",modfile);
3600         if (FileExists(modfile))
3601         {
3602                 for (int j = 0; j < module_names.size(); j++)
3603                 {
3604                         if (module_names[j] == std::string(filename))
3605                         {
3606                                 log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
3607                                 snprintf(MODERR,MAXBUF,"Module already loaded");
3608                                 return false;
3609                         }
3610                 }
3611                 ircd_module* a = new ircd_module(modfile);
3612                 factory[MODCOUNT+1] = a;
3613                 if (factory[MODCOUNT+1]->LastError())
3614                 {
3615                         log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
3616                         snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
3617                         MODCOUNT--;
3618                         return false;
3619                 }
3620                 if (factory[MODCOUNT+1]->factory)
3621                 {
3622                         Module* m = factory[MODCOUNT+1]->factory->CreateModule();
3623                         modules[MODCOUNT+1] = m;
3624                         /* save the module and the module's classfactory, if
3625                          * this isnt done, random crashes can occur :/ */
3626                         module_names.push_back(filename);
3627                 }
3628                 else
3629                 {
3630                         log(DEFAULT,"Unable to load %s",modfile);
3631                         snprintf(MODERR,MAXBUF,"Factory function failed!");
3632                         return false;
3633                 }
3634         }
3635         else
3636         {
3637                 log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
3638                 snprintf(MODERR,MAXBUF,"Module file could not be found");
3639                 return false;
3640         }
3641         MODCOUNT++;
3642         return true;
3643 }
3644
3645 int InspIRCd(void)
3646 {
3647         struct sockaddr_in client,server;
3648         char addrs[MAXBUF][255];
3649         int incomingSockfd, result = TRUE;
3650         socklen_t length;
3651         int count = 0;
3652         int selectResult = 0, selectResult2 = 0;
3653         char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
3654         fd_set selectFds;
3655         timeval tv;
3656
3657         log_file = fopen("ircd.log","a+");
3658         if (!log_file)
3659         {
3660                 printf("ERROR: Could not write to logfile ircd.log, bailing!\n\n");
3661                 Exit(ERROR);
3662         }
3663
3664         log(DEBUG,"InspIRCd: startup: begin");
3665         log(DEBUG,"$Id$");
3666         if (geteuid() == 0)
3667         {
3668                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
3669                 Exit(ERROR);
3670                 log(DEFAULT,"InspIRCd: startup: not starting with UID 0!");
3671         }
3672         SetupCommandTable();
3673         log(DEBUG,"InspIRCd: startup: default command table set up");
3674
3675         ReadConfig(true,NULL);
3676         if (DieValue[0])
3677         {
3678                 printf("WARNING: %s\n\n",DieValue);
3679                 log(DEFAULT,"Ut-Oh, somebody didn't read their config file: '%s'",DieValue);
3680                 exit(0);
3681         }
3682         log(DEBUG,"InspIRCd: startup: read config");
3683
3684         int clientportcount = 0, serverportcount = 0;
3685
3686         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
3687         {
3688                 ConfValue("bind","port",count,configToken,&config_f);
3689                 ConfValue("bind","address",count,Addr,&config_f);
3690                 ConfValue("bind","type",count,Type,&config_f);
3691                 if (!strcmp(Type,"servers"))
3692                 {
3693                         char Default[MAXBUF];
3694                         strcpy(Default,"no");
3695                         ConfValue("bind","default",count,Default,&config_f);
3696                         if (strchr(Default,'y'))
3697                         {
3698                                 defaultRoute = serverportcount;
3699                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
3700                         }
3701                         me[serverportcount] = new serverrec(ServerName,100L,false);
3702                         if (!me[serverportcount]->CreateListener(Addr,atoi(configToken)))
3703                         {
3704                                 log(DEFAULT,"Warning: Failed to bind port %lu",(unsigned long)atoi(configToken));
3705                                 printf("Warning: Failed to bind port %lu\n",(unsigned long)atoi(configToken));
3706                         }
3707                         else
3708                         {
3709                                 serverportcount++;
3710                         }
3711                 }
3712                 else
3713                 {
3714                         ports[clientportcount] = atoi(configToken);
3715                         strlcpy(addrs[clientportcount],Addr,256);
3716                         clientportcount++;
3717                 }
3718                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
3719         }
3720         portCount = clientportcount;
3721         UDPportCount = serverportcount;
3722
3723         log(DEBUG,"InspIRCd: startup: read %lu total client ports and %lu total server ports",(unsigned long)portCount,(unsigned long)UDPportCount);
3724         log(DEBUG,"InspIRCd: startup: InspIRCd is now starting!");
3725
3726         printf("\n");
3727
3728         /* BugFix By Craig! :p */
3729         MODCOUNT = -1;
3730         for (count = 0; count < ConfValueEnum("module",&config_f); count++)
3731         {
3732                 ConfValue("module","name",count,configToken,&config_f);
3733                 printf("Loading module... \033[1;32m%s\033[0m\n",configToken);
3734                 if (!LoadModule(configToken))
3735                 {
3736                         log(DEBUG,"Exiting due to a module loader error.");
3737                         printf("\nThere was an error loading a module: %s\n\nYou might want to do './inspircd start' instead of 'bin/inspircd'\n\n",ModuleError());
3738                         Exit(0);
3739                 }
3740         }
3741         log(DEBUG,"Total loaded modules: %lu",(unsigned long)MODCOUNT+1);
3742
3743         startup_time = time(NULL);
3744
3745         char PID[MAXBUF];
3746         ConfValue("pid","file",0,PID,&config_f);
3747         // write once here, to try it out and make sure its ok
3748         WritePID(PID);
3749
3750         /* setup select call */
3751         FD_ZERO(&selectFds);
3752         log(DEBUG,"InspIRCd: startup: zero selects");
3753         log(VERBOSE,"InspIRCd: startup: portCount = %lu", (unsigned long)portCount);
3754
3755         for (count = 0; count < portCount; count++)
3756         {
3757                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
3758                 {
3759                         log(DEBUG,"InspIRCd: startup: bad fd %lu",(unsigned long)openSockfd[boundPortCount]);
3760                         return(ERROR);
3761                 }
3762                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
3763                 {
3764                         log(DEFAULT,"InspIRCd: startup: failed to bind port %lu",(unsigned long)ports[count]);
3765                 }
3766                 else    /* well we at least bound to one socket so we'll continue */
3767                 {
3768                         boundPortCount++;
3769                 }
3770         }
3771
3772         log(DEBUG,"InspIRCd: startup: total bound ports %lu",(unsigned long)boundPortCount);
3773
3774         /* if we didn't bind to anything then abort */
3775         if (boundPortCount == 0)
3776         {
3777                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
3778                 printf("\nERROR: Was not able to bind any of %lu ports! Please check your configuration.\n\n", (unsigned long)portCount);
3779                 return (ERROR);
3780         }
3781
3782
3783         printf("\nInspIRCd is now running!\n");
3784
3785         if (nofork)
3786         {
3787                 log(VERBOSE,"Not forking as -nofork was specified");
3788         }
3789         else
3790         {
3791                 if (DaemonSeed() == ERROR)
3792                 {
3793                         log(DEFAULT,"InspIRCd: startup: can't daemonise");
3794                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
3795                         Exit(ERROR);
3796                 }
3797         }
3798
3799         WritePID(PID);
3800
3801         length = sizeof (client);
3802         char udp_msg[MAXBUF],tcp_host[MAXBUF];
3803
3804         fd_set serverfds;
3805         timeval tvs;
3806         tvs.tv_usec = 10000L;
3807         tvs.tv_sec = 0;
3808         tv.tv_sec = 0;
3809         tv.tv_usec = 10000L;
3810         char data[10240];
3811         timeval tval;
3812         fd_set sfd;
3813         tval.tv_usec = 10000L;
3814         tval.tv_sec = 0;
3815         int total_in_this_set = 0;
3816         int v = 0;
3817         bool expire_run = false;
3818
3819         /* main loop, this never returns */
3820         for (;;)
3821         {
3822 #ifdef _POSIX_PRIORITY_SCHEDULING
3823                 sched_yield();
3824 #endif
3825                 // poll dns queue
3826                 dns_poll();
3827                 FD_ZERO(&sfd);
3828
3829                 // we only read time() once per iteration rather than tons of times!
3830                 TIME = time(NULL);
3831
3832                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
3833                 // them in a list, then reap the list every second or so.
3834                 if (((TIME % 5) == 0) && (!expire_run))
3835                 {
3836                         expire_lines();
3837                         FOREACH_MOD OnBackgroundTimer(TIME);
3838                         expire_run = true;
3839                         continue;
3840                 }
3841                 if ((TIME % 5) == 1)
3842                         expire_run = false;
3843
3844                 // fix by brain - this must be below any manipulation of the hashmap by modules
3845                 user_hash::iterator count2 = clientlist.begin();
3846
3847                 FD_ZERO(&serverfds);
3848
3849                 for (int x = 0; x != UDPportCount; x++)
3850                 {
3851                         if (me[x])
3852                                 FD_SET(me[x]->fd, &serverfds);
3853                 }
3854
3855                 // serverFds timevals went here
3856
3857                 tvs.tv_usec = 30000L;
3858                 tvs.tv_sec = 0;
3859                 int servresult = select(32767, &serverfds, NULL, NULL, &tvs);
3860                 if (servresult > 0)
3861                 {
3862                         for (int x = 0; x != UDPportCount; x++)
3863                         {
3864                                 if ((me[x]) && (FD_ISSET (me[x]->fd, &serverfds)))
3865                                 {
3866                                         char remotehost[MAXBUF],resolved[MAXBUF];
3867                                         length = sizeof (client);
3868                                         incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length);
3869                                         if (incomingSockfd != -1)
3870                                         {
3871                                                 strlcpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF);
3872                                                 if(CleanAndResolve(resolved, remotehost) != TRUE)
3873                                                 {
3874                                                         strlcpy(resolved,remotehost,MAXBUF);
3875                                                 }
3876                                                 // add to this connections ircd_connector vector
3877                                                 // *FIX* - we need the LOCAL port not the remote port in &client!
3878                                                 me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port);
3879                                         }
3880                                 }
3881                         }
3882                 }
3883
3884                 for (int x = 0; x < UDPportCount; x++)
3885                 {
3886                         std::deque<std::string> msgs;
3887                         msgs.clear();
3888                         if ((me[x]) && (me[x]->RecvPacket(msgs, tcp_host)))
3889                         {
3890                                 for (int ctr = 0; ctr < msgs.size(); ctr++)
3891                                 {
3892                                         strlcpy(udp_msg,msgs[ctr].c_str(),MAXBUF);
3893                                         log(DEBUG,"Processing: %s",udp_msg);
3894                                         if (!udp_msg[0])
3895                                         {
3896                                                 log(DEBUG,"Invalid string from %s [route%lu]",tcp_host,(unsigned long)x);
3897                                                 break;
3898                                         }
3899                                         // during a netburst, send all data to all other linked servers
3900                                         if ((((nb_start>0) && (udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))) || (is_uline(tcp_host)))
3901                                         {
3902                                                 if (is_uline(tcp_host))
3903                                                 {
3904                                                         if ((udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))
3905                                                         {
3906                                                                 NetSendToAllExcept(tcp_host,udp_msg);
3907                                                         }
3908                                                 }
3909                                                 else
3910                                                         NetSendToAllExcept(tcp_host,udp_msg);
3911                                         }
3912                                         std::string msg = udp_msg;
3913                                         FOREACH_MOD OnPacketReceive(msg,tcp_host);
3914                                         strlcpy(udp_msg,msg.c_str(),MAXBUF);
3915                                         handle_link_packet(udp_msg, tcp_host, me[x]);
3916                                 }
3917                                 goto label;
3918                         }
3919                 }
3920
3921
3922         while (count2 != clientlist.end())
3923         {
3924                 FD_ZERO(&sfd);
3925                 total_in_this_set = 0;
3926
3927                 user_hash::iterator xcount = count2;
3928                 user_hash::iterator endingiter = count2;
3929
3930                 if (count2 == clientlist.end()) break;
3931
3932                 if (count2->second)
3933                 if (count2->second->fd != 0)
3934                 {
3935                         // assemble up to 64 sockets into an fd_set
3936                         // to implement a pooling mechanism.
3937                         //
3938                         // This should be up to 64x faster than the
3939                         // old implementation.
3940                         while (total_in_this_set < 64)
3941                         {
3942                                 if (count2 != clientlist.end())
3943                                 {
3944                                         // we don't check the state of remote users.
3945                                         if ((count2->second->fd != -1) && (count2->second->fd != FD_MAGIC_NUMBER))
3946                                         {
3947                                                 FD_SET (count2->second->fd, &sfd);
3948
3949                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
3950                                                 // their connection class.
3951                                                 if ((TIME > count2->second->timeout) && (count2->second->registered != 7))
3952                                                 {
3953                                                         log(DEBUG,"InspIRCd: registration timeout: %s",count2->second->nick);
3954                                                         kill_link(count2->second,"Registration timeout");
3955                                                         goto label;
3956                                                 }
3957                                                 if ((TIME > count2->second->signon) && (count2->second->registered == 3) && (AllModulesReportReady(count2->second)))
3958                                                 {
3959                                                         log(DEBUG,"signon exceed, registered=3, and modules ready, OK");
3960                                                         count2->second->dns_done = true;
3961                                                         FullConnectUser(count2->second);
3962                                                         goto label;
3963                                                 }
3964                                                 if ((count2->second->dns_done) && (count2->second->registered == 3) && (AllModulesReportReady(count2->second))) // both NICK and USER... and DNS
3965                                                 {
3966                                                         log(DEBUG,"dns done, registered=3, and modules ready, OK");
3967                                                         FullConnectUser(count2->second);
3968                                                         goto label;
3969                                                 }
3970                                                 if ((TIME > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7))
3971                                                 {
3972                                                         if ((!count2->second->lastping) && (count2->second->registered == 7))
3973                                                         {
3974                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",count2->second->nick);
3975                                                                 kill_link(count2->second,"Ping timeout");
3976                                                                 goto label;
3977                                                         }
3978                                                         Write(count2->second->fd,"PING :%s",ServerName);
3979                                                         log(DEBUG,"InspIRCd: pinging: %s",count2->second->nick);
3980                                                         count2->second->lastping = 0;
3981                                                         count2->second->nping = TIME+count2->second->pingmax;   // was hard coded to 120
3982                                                 }
3983                                         }
3984                                         count2++;
3985                                         total_in_this_set++;
3986                                 }
3987                                 else break;
3988                         }
3989
3990                         endingiter = count2;
3991                         count2 = xcount; // roll back to where we were
3992
3993                         v = 0;
3994
3995                         // tvals defined here
3996
3997                         tval.tv_usec = 1000L;
3998                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
3999
4000                         // now loop through all of the items in this pool if any are waiting
4001                         //if (selectResult2 > 0)
4002                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
4003                         {
4004
4005 #ifdef _POSIX_PRIORITY_SCHEDULING
4006                                 sched_yield();
4007 #endif
4008
4009                                 result = EAGAIN;
4010                                 if ((count2a->second->fd != FD_MAGIC_NUMBER) && (count2a->second->fd != -1) && (FD_ISSET (count2a->second->fd, &sfd)))
4011                                 {
4012                                         memset(data, 0, 10240);
4013                                         result = read(count2a->second->fd, data, 10240);
4014
4015                                         if (result)
4016                                         {
4017                                                 // perform a check on the raw buffer as an array (not a string!) to remove
4018                                                 // characters 0 and 7 which are illegal in the RFC - replace them with spaces.
4019                                                 // hopefully this should stop even more people whining about "Unknown command: *"
4020                                                 for (int checker = 0; checker < result; checker++)
4021                                                 {
4022                                                         if ((data[checker] == 0) || (data[checker] == 7))
4023                                                                 data[checker] = ' ';
4024                                                 }
4025                                                 userrec* current = count2a->second;
4026                                                 int currfd = current->fd;
4027                                                 char* l = strtok(data,"\n");
4028                                                 int floodlines = 0;
4029                                                 while (l)
4030                                                 {
4031                                                         floodlines++;
4032                                                         if ((floodlines > current->flood) && (current->flood != 0))
4033                                                         {
4034                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4035                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4036                                                                 kill_link(current,"Excess flood");
4037                                                                 goto label;
4038                                                         }
4039                                                         char sanitized[NetBufferSize];
4040                                                         memset(sanitized, 0, NetBufferSize);
4041                                                         int ptt = 0;
4042                                                         for (int pt = 0; pt < strlen(l); pt++)
4043                                                         {
4044                                                                 if (l[pt] != '\r')
4045                                                                 {
4046                                                                         sanitized[ptt++] = l[pt];
4047                                                                 }
4048                                                         }
4049                                                         sanitized[ptt] = '\0';
4050                                                         if (*sanitized)
4051                                                         {
4052
4053
4054                                                                 // we're gonna re-scan to check if the nick is gone, after every
4055                                                                 // command - if it has, we're gonna bail
4056                                                                 bool find_again = false;
4057                                                                 process_buffer(sanitized,current);
4058
4059                                                                 // look for the user's record in case it's changed
4060                                                                 for (user_hash::iterator c2 = clientlist.begin(); c2 != clientlist.end(); c2++)
4061                                                                 {
4062                                                                         if (c2->second->fd == currfd)
4063                                                                         {
4064                                                                                 // found again, update pointer
4065                                                                                 current == c2->second;
4066                                                                                 find_again = true;
4067                                                                                 break;
4068                                                                         }
4069                                                                 }
4070                                                                 if (!find_again)
4071                                                                         goto label;
4072
4073                                                         }
4074                                                         l = strtok(NULL,"\n");
4075                                                 }
4076                                                 goto label;
4077                                         }
4078
4079                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
4080                                         {
4081                                                 log(DEBUG,"killing: %s",count2a->second->nick);
4082                                                 kill_link(count2a->second,strerror(errno));
4083                                                 goto label;
4084                                         }
4085                                 }
4086                                 // result EAGAIN means nothing read
4087                                 if (result == EAGAIN)
4088                                 {
4089                                 }
4090                                 else
4091                                 if (result == 0)
4092                                 {
4093                                         if (count2->second)
4094                                         {
4095                                                 log(DEBUG,"InspIRCd: Exited: %s",count2a->second->nick);
4096                                                 kill_link(count2a->second,"Client exited");
4097                                                 // must bail here? kill_link removes the hash, corrupting the iterator
4098                                                 log(DEBUG,"Bailing from client exit");
4099                                                 goto label;
4100                                         }
4101                                 }
4102                                 else if (result > 0)
4103                                 {
4104                                 }
4105                         }
4106                 }
4107                 for (int q = 0; q < total_in_this_set; q++)
4108                 {
4109                         count2++;
4110                 }
4111         }
4112
4113 #ifdef _POSIX_PRIORITY_SCHEDULING
4114         sched_yield();
4115 #endif
4116
4117         // set up select call
4118         for (count = 0; count < boundPortCount; count++)
4119         {
4120                 FD_SET (openSockfd[count], &selectFds);
4121         }
4122
4123         tv.tv_usec = 30000L;
4124         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
4125
4126         /* select is reporting a waiting socket. Poll them all to find out which */
4127         if (selectResult > 0)
4128         {
4129                 char target[MAXBUF], resolved[MAXBUF];
4130                 for (count = 0; count < boundPortCount; count++)
4131                 {
4132                         if (FD_ISSET (openSockfd[count], &selectFds))
4133                         {
4134                                 length = sizeof (client);
4135                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
4136
4137                                 strlcpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
4138                                 strlcpy (resolved, target, MAXBUF);
4139
4140                                 if (incomingSockfd < 0)
4141                                 {
4142                                         WriteOpers("*** WARNING: Accept failed on port %lu (%s)",(unsigned long)ports[count],target);
4143                                         log(DEBUG,"InspIRCd: accept failed: %lu",(unsigned long)ports[count]);
4144                                 }
4145                                 else
4146                                 {
4147                                         AddClient(incomingSockfd, resolved, ports[count], false, inet_ntoa (client.sin_addr));
4148                                         log(DEBUG,"InspIRCd: adding client on port %lu fd=%lu",(unsigned long)ports[count],(unsigned long)incomingSockfd);
4149                                 }
4150                                 goto label;
4151                         }
4152                 }
4153         }
4154         label:
4155         if (0) {};
4156 #ifdef _POSIX_PRIORITY_SCHEDULING
4157         sched_yield();
4158 #endif
4159 }
4160 /* not reached */
4161 close (incomingSockfd);
4162 }
4163