src/inspircd.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 /* Now with added unF! ;) */
  18
  19 using namespace std;
  20
  21 #include "inspircd.h"
  22 #include "inspircd_io.h"
  23 #include "inspircd_util.h"
  24 #include "inspircd_config.h"
  25 #include <unistd.h>
  26 #include <fcntl.h>
  27 #include <sys/errno.h>
  28 #include <sys/ioctl.h>
  29 #include <sys/utsname.h>
  30 #include <cstdio>
  31 #include <time.h>
  32 #include <string>
  33 #ifdef GCC3
  34 #include <ext/hash_map>
  35 #else
  36 #include <hash_map>
  37 #endif
  38 #include <map>
  39 #include <sstream>
  40 #include <vector>
  41 #include <errno.h>
  42 #include <deque>
  43 #include <errno.h>
  44 #include <unistd.h>
  45 #include <sched.h>
  46 #include "connection.h"
  47 #include "users.h"
  48 #include "servers.h"
  49 #include "ctables.h"
  50 #include "globals.h"
  51 #include "modules.h"
  52 #include "dynamic.h"
  53 #include "wildcard.h"
  54 #include "message.h"
  55 #include "mode.h"
  56 #include "commands.h"
  57 #include "xline.h"
  58 #include "inspstring.h"
  59 #include "dnsqueue.h"
  60
  61 #ifdef GCC3
  62 #define nspace __gnu_cxx
  63 #else
  64 #define nspace std
  65 #endif
  66
  67 int LogLevel = DEFAULT;
  68 char ServerName[MAXBUF];
  69 char Network[MAXBUF];
  70 char ServerDesc[MAXBUF];
  71 char AdminName[MAXBUF];
  72 char AdminEmail[MAXBUF];
  73 char AdminNick[MAXBUF];
  74 char diepass[MAXBUF];
  75 char restartpass[MAXBUF];
  76 char motd[MAXBUF];
  77 char rules[MAXBUF];
  78 char list[MAXBUF];
  79 char PrefixQuit[MAXBUF];
  80 char DieValue[MAXBUF];
  81 char DNSServer[MAXBUF];
  82 int debugging =  0;
  83 int WHOWAS_STALE = 48; // default WHOWAS Entries last 2 days before they go 'stale'
  84 int WHOWAS_MAX = 100;  // default 100 people maximum in the WHOWAS list
  85 int DieDelay  =  5;
  86 time_t startup_time = time(NULL);
  87 int NetBufferSize = 10240; // NetBufferSize used as the buffer size for all read() ops
  88 extern int MaxWhoResults;
  89 time_t nb_start = 0;
  90 int dns_timeout = 5;
  91
  92 char DisabledCommands[MAXBUF];
  93
  94 bool AllowHalfop = true;
  95 bool AllowProtect = true;
  96 bool AllowFounder = true;
  97
  98 extern std::vector<Module*> modules;
  99 std::vector<std::string> module_names;
 100 extern std::vector<ircd_module*> factory;
 101
 102 extern int MODCOUNT;
 103 int openSockfd[MAXSOCKS];
 104 bool nofork = false;
 105 bool unlimitcore = false;
 106
 107 time_t TIME = time(NULL);
 108
 109 namespace nspace
 110 {
 111 #ifdef GCC34
 112         template<> struct hash<in_addr>
 113 #else
 114         template<> struct nspace::hash<in_addr>
 115 #endif
 116         {
 117                 size_t operator()(const struct in_addr &a) const
 118                 {
 119                         size_t q;
 120                         memcpy(&q,&a,sizeof(size_t));
 121                         return q;
 122                 }
 123         };
 124 #ifdef GCC34
 125         template<> struct hash<string>
 126 #else
 127         template<> struct nspace::hash<string>
 128 #endif
 129         {
 130                 size_t operator()(const string &s) const
 131                 {
 132                         char a[MAXBUF];
 133                         static struct hash<const char *> strhash;
 134                         strlcpy(a,s.c_str(),MAXBUF);
 135                         strlower(a);
 136                         return strhash(a);
 137                 }
 138         };
 139 }
 140
 141
 142 struct StrHashComp
 143 {
 144
 145         bool operator()(const string& s1, const string& s2) const
 146         {
 147                 char a[MAXBUF],b[MAXBUF];
 148                 strlcpy(a,s1.c_str(),MAXBUF);
 149                 strlcpy(b,s2.c_str(),MAXBUF);
 150                 strlower(a);
 151                 strlower(b);
 152                 return (strcasecmp(a,b) == 0);
 153         }
 154
 155 };
 156
 157 struct InAddr_HashComp
 158 {
 159
 160         bool operator()(const in_addr &s1, const in_addr &s2) const
 161         {
 162                 size_t q;
 163                 size_t p;
 164
 165                 memcpy(&q,&s1,sizeof(size_t));
 166                 memcpy(&p,&s2,sizeof(size_t));
 167
 168                 return (q == p);
 169         }
 170
 171 };
 172
 173
 174 typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, StrHashComp> user_hash;
 175 typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, StrHashComp> chan_hash;
 176 typedef nspace::hash_map<in_addr,string*, nspace::hash<in_addr>, InAddr_HashComp> address_cache;
 177 typedef std::deque<command_t> command_table;
 178
 179 serverrec* me[32];
 180
 181 FILE *log_file;
 182
 183 user_hash clientlist;
 184 chan_hash chanlist;
 185 user_hash whowas;
 186 command_table cmdlist;
 187 file_cache MOTD;
 188 file_cache RULES;
 189 address_cache IP;
 190
 191 ClassVector Classes;
 192
 193 struct linger linger = { 0 };
 194 char MyExecutable[1024];
 195 int boundPortCount = 0;
 196 int portCount = 0, UDPportCount = 0, ports[MAXSOCKS];
 197 int defaultRoute = 0;
 198 char ModPath[MAXBUF];
 199
 200 connection C;
 201
 202 long MyKey = C.GenKey();
 203
 204 /* prototypes */
 205
 206 int has_channel(userrec *u, chanrec *c);
 207 int usercount(chanrec *c);
 208 int usercount_i(chanrec *c);
 209 char* Passwd(userrec *user);
 210 bool IsDenied(userrec *user);
 211 void AddWhoWas(userrec* u);
 212
 213 std::vector<long> auth_cookies;
 214 std::stringstream config_f(stringstream::in | stringstream::out);
 215
 216 std::vector<userrec*> all_opers;
 217
 218 void AddOper(userrec* user)
 219 {
 220         log(DEBUG,"Oper added to optimization list");
 221         all_opers.push_back(user);
 222 }
 223
 224 void DeleteOper(userrec* user)
 225 {
 226         for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 227         {
 228                 if (*a == user)
 229                 {
 230                         log(DEBUG,"Oper removed from optimization list");
 231                         all_opers.erase(a);
 232                         return;
 233                 }
 234         }
 235 }
 236
 237 long GetRevision()
 238 {
 239         char Revision[] = "$Revision$";
 240         char *s1 = Revision;
 241         char *savept;
 242         char *v2 = strtok_r(s1," ",&savept);
 243         s1 = savept;
 244         v2 = strtok_r(s1," ",&savept);
 245         s1 = savept;
 246         return (long)(atof(v2)*10000);
 247 }
 248
 249
 250 std::string getservername()
 251 {
 252         return ServerName;
 253 }
 254
 255 std::string getserverdesc()
 256 {
 257         return ServerDesc;
 258 }
 259
 260 std::string getnetworkname()
 261 {
 262         return Network;
 263 }
 264
 265 std::string getadminname()
 266 {
 267         return AdminName;
 268 }
 269
 270 std::string getadminemail()
 271 {
 272         return AdminEmail;
 273 }
 274
 275 std::string getadminnick()
 276 {
 277         return AdminNick;
 278 }
 279
 280 void log(int level,char *text, ...)
 281 {
 282         char textbuffer[MAXBUF];
 283         va_list argsPtr;
 284         time_t rawtime;
 285         struct tm * timeinfo;
 286         if (level < LogLevel)
 287                 return;
 288
 289         time(&rawtime);
 290         timeinfo = localtime (&rawtime);
 291
 292         if (log_file)
 293         {
 294                 char b[MAXBUF];
 295                 va_start (argsPtr, text);
 296                 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 297                 va_end(argsPtr);
 298                 strlcpy(b,asctime(timeinfo),MAXBUF);
 299                 b[24] = ':';    // we know this is the end of the time string
 300                 fprintf(log_file,"%s %s\n",b,textbuffer);
 301                 if (nofork)
 302                 {
 303                         // nofork enabled? display it on terminal too
 304                         printf("%s %s\n",b,textbuffer);
 305                 }
 306         }
 307 }
 308
 309 void readfile(file_cache &F, const char* fname)
 310 {
 311         FILE* file;
 312         char linebuf[MAXBUF];
 313
 314         log(DEBUG,"readfile: loading %s",fname);
 315         F.clear();
 316         file =  fopen(fname,"r");
 317         if (file)
 318         {
 319                 while (!feof(file))
 320                 {
 321                         fgets(linebuf,sizeof(linebuf),file);
 322                         linebuf[strlen(linebuf)-1]='\0';
 323                         if (linebuf[0] == 0)
 324                         {
 325                                 strcpy(linebuf,"  ");
 326                         }
 327                         if (!feof(file))
 328                         {
 329                                 F.push_back(linebuf);
 330                         }
 331                 }
 332                 fclose(file);
 333         }
 334         else
 335         {
 336                 log(DEBUG,"readfile: failed to load file: %s",fname);
 337         }
 338         log(DEBUG,"readfile: loaded %s, %lu lines",fname,(unsigned long)F.size());
 339 }
 340
 341 void ReadConfig(bool bail, userrec* user)
 342 {
 343         char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF],MW[MAXBUF];
 344         char AH[MAXBUF],AP[MAXBUF],AF[MAXBUF],DNT[MAXBUF],pfreq[MAXBUF];
 345         ConnectClass c;
 346         std::stringstream errstr;
 347
 348         if (!LoadConf(CONFIG_FILE,&config_f,&errstr))
 349         {
 350                 errstr.seekg(0);
 351                 if (bail)
 352                 {
 353                         printf("There were errors in your configuration:\n%s",errstr.str().c_str());
 354                         Exit(0);
 355                 }
 356                 else
 357                 {
 358                         char dataline[1024];
 359                         if (user)
 360                         {
 361                                 WriteServ(user->fd,"NOTICE %s :There were errors in the configuration file:",user->nick);
 362                                 while (!errstr.eof())
 363                                 {
 364                                         errstr.getline(dataline,1024);
 365                                         WriteServ(user->fd,"NOTICE %s :%s",user->nick,dataline);
 366                                 }
 367                         }
 368                         else
 369                         {
 370                                 WriteOpers("There were errors in the configuration file:",user->nick);
 371                                 while (!errstr.eof())
 372                                 {
 373                                         errstr.getline(dataline,1024);
 374                                         WriteOpers(dataline);
 375                                 }
 376                         }
 377                         return;
 378                 }
 379         }
 380
 381         ConfValue("server","name",0,ServerName,&config_f);
 382         ConfValue("server","description",0,ServerDesc,&config_f);
 383         ConfValue("server","network",0,Network,&config_f);
 384         ConfValue("admin","name",0,AdminName,&config_f);
 385         ConfValue("admin","email",0,AdminEmail,&config_f);
 386         ConfValue("admin","nick",0,AdminNick,&config_f);
 387         ConfValue("files","motd",0,motd,&config_f);
 388         ConfValue("files","rules",0,rules,&config_f);
 389         ConfValue("power","diepass",0,diepass,&config_f);
 390         ConfValue("power","pause",0,pauseval,&config_f);
 391         ConfValue("power","restartpass",0,restartpass,&config_f);
 392         ConfValue("options","prefixquit",0,PrefixQuit,&config_f);
 393         ConfValue("die","value",0,DieValue,&config_f);
 394         ConfValue("options","loglevel",0,dbg,&config_f);
 395         ConfValue("options","netbuffersize",0,NB,&config_f);
 396         ConfValue("options","maxwho",0,MW,&config_f);
 397         ConfValue("options","allowhalfop",0,AH,&config_f);
 398         ConfValue("options","allowprotect",0,AP,&config_f);
 399         ConfValue("options","allowfounder",0,AF,&config_f);
 400         ConfValue("dns","server",0,DNSServer,&config_f);
 401         ConfValue("dns","timeout",0,DNT,&config_f);
 402         ConfValue("options","moduledir",0,ModPath,&config_f);
 403         ConfValue("disabled","commands",0,DisabledCommands,&config_f);
 404
 405         NetBufferSize = atoi(NB);
 406         MaxWhoResults = atoi(MW);
 407         dns_timeout = atoi(DNT);
 408         if (!dns_timeout)
 409                 dns_timeout = 5;
 410         if (!DNSServer[0])
 411                 strlcpy(DNSServer,"127.0.0.1",MAXBUF);
 412         if (!ModPath[0])
 413                 strlcpy(ModPath,MOD_PATH,MAXBUF);
 414         AllowHalfop = ((!strcasecmp(AH,"true")) || (!strcasecmp(AH,"1")) || (!strcasecmp(AH,"yes")));
 415         AllowProtect = ((!strcasecmp(AP,"true")) || (!strcasecmp(AP,"1")) || (!strcasecmp(AP,"yes")));
 416         AllowFounder = ((!strcasecmp(AF,"true")) || (!strcasecmp(AF,"1")) || (!strcasecmp(AF,"yes")));
 417         if ((!NetBufferSize) || (NetBufferSize > 65535) || (NetBufferSize < 1024))
 418         {
 419                 log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
 420                 NetBufferSize = 10240;
 421         }
 422         if ((!MaxWhoResults) || (MaxWhoResults > 65535) || (MaxWhoResults < 1))
 423         {
 424                 log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128.");
 425                 MaxWhoResults = 128;
 426         }
 427         if (!strcmp(dbg,"debug"))
 428                 LogLevel = DEBUG;
 429         if (!strcmp(dbg,"verbose"))
 430                 LogLevel = VERBOSE;
 431         if (!strcmp(dbg,"default"))
 432                 LogLevel = DEFAULT;
 433         if (!strcmp(dbg,"sparse"))
 434                 LogLevel = SPARSE;
 435         if (!strcmp(dbg,"none"))
 436                 LogLevel = NONE;
 437         readfile(MOTD,motd);
 438         log(DEFAULT,"Reading message of the day...");
 439         readfile(RULES,rules);
 440         log(DEFAULT,"Reading connect classes...");
 441         Classes.clear();
 442         for (int i = 0; i < ConfValueEnum("connect",&config_f); i++)
 443         {
 444                 strcpy(Value,"");
 445                 ConfValue("connect","allow",i,Value,&config_f);
 446                 ConfValue("connect","timeout",i,timeout,&config_f);
 447                 ConfValue("connect","flood",i,flood,&config_f);
 448                 ConfValue("connect","pingfreq",i,pfreq,&config_f);
 449                 if (Value[0])
 450                 {
 451                         strlcpy(c.host,Value,MAXBUF);
 452                         c.type = CC_ALLOW;
 453                         strlcpy(Value,"",MAXBUF);
 454                         ConfValue("connect","password",i,Value,&config_f);
 455                         strlcpy(c.pass,Value,MAXBUF);
 456                         c.registration_timeout = 90; // default is 2 minutes
 457                         c.pingtime = 120;
 458                         c.flood = atoi(flood);
 459                         if (atoi(timeout)>0)
 460                         {
 461                                 c.registration_timeout = atoi(timeout);
 462                         }
 463                         if (atoi(pfreq)>0)
 464                         {
 465                                 c.pingtime = atoi(pfreq);
 466                         }
 467                         Classes.push_back(c);
 468                         log(DEBUG,"Read connect class type ALLOW, host=%s password=%s timeout=%lu flood=%lu",c.host,c.pass,(unsigned long)c.registration_timeout,(unsigned long)c.flood);
 469                 }
 470                 else
 471                 {
 472                         ConfValue("connect","deny",i,Value,&config_f);
 473                         strlcpy(c.host,Value,MAXBUF);
 474                         c.type = CC_DENY;
 475                         Classes.push_back(c);
 476                         log(DEBUG,"Read connect class type DENY, host=%s",c.host);
 477                 }
 478
 479         }
 480         log(DEFAULT,"Reading K lines,Q lines and Z lines from config...");
 481         read_xline_defaults();
 482         log(DEFAULT,"Applying K lines, Q lines and Z lines...");
 483         apply_lines();
 484         log(DEFAULT,"Done reading configuration file, InspIRCd is now starting.");
 485         if (!bail)
 486         {
 487                 log(DEFAULT,"Adding and removing modules due to rehash...");
 488
 489                 std::vector<std::string> old_module_names, new_module_names, added_modules, removed_modules;
 490
 491                 // store the old module names
 492                 for (std::vector<std::string>::iterator t = module_names.begin(); t != module_names.end(); t++)
 493                 {
 494                         old_module_names.push_back(*t);
 495                 }
 496
 497                 // get the new module names
 498                 for (int count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
 499                 {
 500                         ConfValue("module","name",count2,Value,&config_f);
 501                         new_module_names.push_back(Value);
 502                 }
 503
 504                 // now create a list of new modules that are due to be loaded
 505                 // and a seperate list of modules which are due to be unloaded
 506                 for (std::vector<std::string>::iterator _new = new_module_names.begin(); _new != new_module_names.end(); _new++)
 507                 {
 508                         bool added = true;
 509                         for (std::vector<std::string>::iterator old = old_module_names.begin(); old != old_module_names.end(); old++)
 510                         {
 511                                 if (*old == *_new)
 512                                         added = false;
 513                         }
 514                         if (added)
 515                                 added_modules.push_back(*_new);
 516                 }
 517                 for (std::vector<std::string>::iterator oldm = old_module_names.begin(); oldm != old_module_names.end(); oldm++)
 518                 {
 519                         bool removed = true;
 520                         for (std::vector<std::string>::iterator newm = new_module_names.begin(); newm != new_module_names.end(); newm++)
 521                         {
 522                                 if (*newm == *oldm)
 523                                         removed = false;
 524                         }
 525                         if (removed)
 526                                 removed_modules.push_back(*oldm);
 527                 }
 528                 // now we have added_modules, a vector of modules to be loaded, and removed_modules, a vector of modules
 529                 // to be removed.
 530                 int rem = 0, add = 0;
 531                 if (!removed_modules.empty())
 532                 for (std::vector<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 533                 {
 534                         if (UnloadModule(removing->c_str()))
 535                         {
 536                                 WriteOpers("*** REHASH UNLOADED MODULE: %s",removing->c_str());
 537                                 WriteServ(user->fd,"973 %s %s :Module %s successfully unloaded.",user->nick, removing->c_str(), removing->c_str());
 538                                 rem++;
 539                         }
 540                         else
 541                         {
 542                                 WriteServ(user->fd,"972 %s %s :Failed to unload module %s: %s",user->nick, removing->c_str(), removing->c_str(), ModuleError());
 543                         }
 544                 }
 545                 if (!added_modules.empty())
 546                 for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 547                 {
 548                         if (LoadModule(adding->c_str()))
 549                         {
 550                                 WriteOpers("*** REHASH LOADED MODULE: %s",adding->c_str());
 551                                 WriteServ(user->fd,"975 %s %s :Module %s successfully loaded.",user->nick, adding->c_str(), adding->c_str());
 552                                 add++;
 553                         }
 554                         else
 555                         {
 556                                 WriteServ(user->fd,"974 %s %s :Failed to load module %s: %s",user->nick, adding->c_str(), adding->c_str(), ModuleError());
 557                         }
 558                 }
 559                 log(DEFAULT,"Successfully unloaded %lu of %lu modules and loaded %lu of %lu modules.",(unsigned long)rem,(unsigned long)removed_modules.size(),(unsigned long)add,(unsigned long)added_modules.size());
 560         }
 561 }
 562
 563 /* write formatted text to a socket, in same format as printf */
 564
 565 void Write(int sock,char *text, ...)
 566 {
 567         if (sock == FD_MAGIC_NUMBER)
 568                 return;
 569         if (!text)
 570         {
 571                 log(DEFAULT,"*** BUG *** Write was given an invalid parameter");
 572                 return;
 573         }
 574         char textbuffer[MAXBUF];
 575         va_list argsPtr;
 576         char tb[MAXBUF];
 577
 578         va_start (argsPtr, text);
 579         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 580         va_end(argsPtr);
 581         int bytes = snprintf(tb,MAXBUF,"%s\r\n",textbuffer);
 582         chop(tb);
 583         if (sock != -1)
 584         {
 585                 write(sock,tb,bytes > 514 ? 514 : bytes);
 586         }
 587 }
 588
 589 /* write a server formatted numeric response to a single socket */
 590
 591 void WriteServ(int sock, char* text, ...)
 592 {
 593         if (sock == FD_MAGIC_NUMBER)
 594                 return;
 595         if (!text)
 596         {
 597                 log(DEFAULT,"*** BUG *** WriteServ was given an invalid parameter");
 598                 return;
 599         }
 600         char textbuffer[MAXBUF],tb[MAXBUF];
 601         va_list argsPtr;
 602         va_start (argsPtr, text);
 603
 604         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 605         va_end(argsPtr);
 606         int bytes = snprintf(tb,MAXBUF,":%s %s\r\n",ServerName,textbuffer);
 607         chop(tb);
 608         if (sock != -1)
 609         {
 610                 write(sock,tb,bytes > 514 ? 514 : bytes);
 611         }
 612 }
 613
 614 /* write text from an originating user to originating user */
 615
 616 void WriteFrom(int sock, userrec *user,char* text, ...)
 617 {
 618         if (sock == FD_MAGIC_NUMBER)
 619                 return;
 620         if ((!text) || (!user))
 621         {
 622                 log(DEFAULT,"*** BUG *** WriteFrom was given an invalid parameter");
 623                 return;
 624         }
 625         char textbuffer[MAXBUF],tb[MAXBUF];
 626         va_list argsPtr;
 627         va_start (argsPtr, text);
 628
 629         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 630         va_end(argsPtr);
 631         int bytes = snprintf(tb,MAXBUF,":%s!%s@%s %s\r\n",user->nick,user->ident,user->dhost,textbuffer);
 632         chop(tb);
 633         if (sock != -1)
 634         {
 635                 write(sock,tb,bytes > 514 ? 514 : bytes);
 636         }
 637 }
 638
 639 /* write text to an destination user from a source user (e.g. user privmsg) */
 640
 641 void WriteTo(userrec *source, userrec *dest,char *data, ...)
 642 {
 643         if ((!dest) || (!data))
 644         {
 645                 log(DEFAULT,"*** BUG *** WriteTo was given an invalid parameter");
 646                 return;
 647         }
 648         if (dest->fd == FD_MAGIC_NUMBER)
 649                 return;
 650         char textbuffer[MAXBUF],tb[MAXBUF];
 651         va_list argsPtr;
 652         va_start (argsPtr, data);
 653         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
 654         va_end(argsPtr);
 655         chop(tb);
 656
 657         // if no source given send it from the server.
 658         if (!source)
 659         {
 660                 WriteServ(dest->fd,":%s %s",ServerName,textbuffer);
 661         }
 662         else
 663         {
 664                 WriteFrom(dest->fd,source,"%s",textbuffer);
 665         }
 666 }
 667
 668 /* write formatted text from a source user to all users on a channel
 669  * including the sender (NOT for privmsg, notice etc!) */
 670
 671 void WriteChannel(chanrec* Ptr, userrec* user, char* text, ...)
 672 {
 673         if ((!Ptr) || (!user) || (!text))
 674         {
 675                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 676                 return;
 677         }
 678         char textbuffer[MAXBUF];
 679         va_list argsPtr;
 680         va_start (argsPtr, text);
 681         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 682         va_end(argsPtr);
 683
 684         std::vector<char*> *ulist = Ptr->GetUsers();
 685         for (int j = 0; j < ulist->size(); j++)
 686         {
 687                 char* o = (*ulist)[j];
 688                 userrec* otheruser = (userrec*)o;
 689                 if (otheruser->fd != FD_MAGIC_NUMBER)
 690                         WriteTo(user,otheruser,"%s",textbuffer);
 691         }
 692 }
 693
 694 /* write formatted text from a source user to all users on a channel
 695  * including the sender (NOT for privmsg, notice etc!) doesnt send to
 696  * users on remote servers */
 697
 698 void WriteChannelLocal(chanrec* Ptr, userrec* user, char* text, ...)
 699 {
 700         if ((!Ptr) || (!text))
 701         {
 702                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 703                 return;
 704         }
 705         char textbuffer[MAXBUF];
 706         va_list argsPtr;
 707         va_start (argsPtr, text);
 708         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 709         va_end(argsPtr);
 710
 711         std::vector<char*> *ulist = Ptr->GetUsers();
 712         for (int j = 0; j < ulist->size(); j++)
 713         {
 714                 char* o = (*ulist)[j];
 715                 userrec* otheruser = (userrec*)o;
 716                 if ((otheruser->fd != FD_MAGIC_NUMBER) && (otheruser->fd != -1) && (otheruser != user))
 717                 {
 718                         if (!user)
 719                         {
 720                                 WriteServ(otheruser->fd,"%s",textbuffer);
 721                         }
 722                         else
 723                         {
 724                                 WriteTo(user,otheruser,"%s",textbuffer);
 725                         }
 726                 }
 727         }
 728 }
 729
 730
 731 void WriteChannelWithServ(char* ServName, chanrec* Ptr, char* text, ...)
 732 {
 733         if ((!Ptr) || (!text))
 734         {
 735                 log(DEFAULT,"*** BUG *** WriteChannelWithServ was given an invalid parameter");
 736                 return;
 737         }
 738         char textbuffer[MAXBUF];
 739         va_list argsPtr;
 740         va_start (argsPtr, text);
 741         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 742         va_end(argsPtr);
 743
 744
 745         std::vector<char*> *ulist = Ptr->GetUsers();
 746         for (int j = 0; j < ulist->size(); j++)
 747         {
 748                 char* o = (*ulist)[j];
 749                 userrec* otheruser = (userrec*)o;
 750                 if (otheruser->fd != FD_MAGIC_NUMBER)
 751                         WriteServ(otheruser->fd,"%s",textbuffer);
 752         }
 753 }
 754
 755
 756 /* write formatted text from a source user to all users on a channel except
 757  * for the sender (for privmsg etc) */
 758
 759 void ChanExceptSender(chanrec* Ptr, userrec* user, char* text, ...)
 760 {
 761         if ((!Ptr) || (!user) || (!text))
 762         {
 763                 log(DEFAULT,"*** BUG *** ChanExceptSender was given an invalid parameter");
 764                 return;
 765         }
 766         char textbuffer[MAXBUF];
 767         va_list argsPtr;
 768         va_start (argsPtr, text);
 769         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 770         va_end(argsPtr);
 771
 772         std::vector<char*> *ulist = Ptr->GetUsers();
 773         for (int j = 0; j < ulist->size(); j++)
 774         {
 775                 char* o = (*ulist)[j];
 776                 userrec* otheruser = (userrec*)o;
 777                 if ((otheruser->fd != FD_MAGIC_NUMBER) && (user != otheruser))
 778                         WriteFrom(otheruser->fd,user,"%s",textbuffer);
 779         }
 780 }
 781
 782
 783 std::string GetServerDescription(char* servername)
 784 {
 785         for (int j = 0; j < 32; j++)
 786         {
 787                 if (me[j] != NULL)
 788                 {
 789                         for (int k = 0; k < me[j]->connectors.size(); k++)
 790                         {
 791                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),servername))
 792                                 {
 793                                         return me[j]->connectors[k].GetDescription();
 794                                 }
 795                         }
 796                 }
 797                 return ServerDesc; // not a remote server that can be found, it must be me.
 798         }
 799 }
 800
 801
 802 /* write a formatted string to all users who share at least one common
 803  * channel, including the source user e.g. for use in NICK */
 804
 805 void WriteCommon(userrec *u, char* text, ...)
 806 {
 807         if (!u)
 808         {
 809                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 810                 return;
 811         }
 812
 813         if (u->registered != 7) {
 814                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 815                 return;
 816         }
 817
 818         char textbuffer[MAXBUF];
 819         va_list argsPtr;
 820         va_start (argsPtr, text);
 821         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 822         va_end(argsPtr);
 823
 824         // FIX: Stops a message going to the same person more than once
 825         std::vector<int> already_sent;
 826
 827         for (int i = 0; i < MAXCHANS; i++)
 828         {
 829                 if (u->chans[i].channel)
 830                 {
 831                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 832                         for (int j = 0; j < ulist->size(); j++)
 833                         {
 834                                 char* o = (*ulist)[j];
 835                                 userrec* otheruser = (userrec*)o;
 836                                 bool do_send = true;
 837                                 for (int t = 0; t < already_sent.size(); t++)
 838                                 {
 839                                         if (already_sent[t] == otheruser->fd)
 840                                         {
 841                                                 do_send = false;
 842                                                 break;
 843                                         }
 844                                 }
 845                                 if (do_send)
 846                                 {
 847                                         already_sent.push_back(otheruser->fd);
 848                                         WriteFrom(otheruser->fd,u,"%s",textbuffer);
 849                                 }
 850                         }
 851                 }
 852         }
 853         // if the user was not in any channels, no users will receive the text. Make sure the user
 854         // receives their OWN message for WriteCommon
 855         if (!already_sent.size())
 856         {
 857                 WriteFrom(u->fd,u,"%s",textbuffer);
 858         }
 859 }
 860
 861 /* write a formatted string to all users who share at least one common
 862  * channel, NOT including the source user e.g. for use in QUIT */
 863
 864 void WriteCommonExcept(userrec *u, char* text, ...)
 865 {
 866         if (!u)
 867         {
 868                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 869                 return;
 870         }
 871
 872         if (u->registered != 7) {
 873                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 874                 return;
 875         }
 876
 877         char textbuffer[MAXBUF];
 878         va_list argsPtr;
 879         va_start (argsPtr, text);
 880         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 881         va_end(argsPtr);
 882
 883         std::vector<int> already_sent;
 884
 885         for (int i = 0; i < MAXCHANS; i++)
 886         {
 887                 if (u->chans[i].channel)
 888                 {
 889                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 890                         for (int j = 0; j < ulist->size(); j++)
 891                         {
 892                                 char* o = (*ulist)[j];
 893                                 userrec* otheruser = (userrec*)o;
 894                                 if (u != otheruser)
 895                                 {
 896                                         bool do_send = true;
 897                                         for (int t = 0; t < already_sent.size(); t++)
 898                                         {
 899                                                 if (already_sent[t] == otheruser->fd)
 900                                                 {
 901                                                         do_send = false;
 902                                                         break;
 903                                                 }
 904                                         }
 905                                         if (do_send)
 906                                         {
 907                                                 already_sent.push_back(otheruser->fd);
 908                                                 WriteFrom(otheruser->fd,u,"%s",textbuffer);
 909                                         }
 910                                 }
 911                         }
 912                 }
 913         }
 914 }
 915
 916 void WriteOpers(char* text, ...)
 917 {
 918         if (!text)
 919         {
 920                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 921                 return;
 922         }
 923
 924         char textbuffer[MAXBUF];
 925         va_list argsPtr;
 926         va_start (argsPtr, text);
 927         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 928         va_end(argsPtr);
 929
 930         for (std::vector<userrec*>::iterator i = all_opers.begin(); i != all_opers.end(); i++)
 931         {
 932                 userrec* a = *i;
 933                 if ((a) && (a->fd != FD_MAGIC_NUMBER))
 934                 {
 935                         if (strchr(a->modes,'s'))
 936                         {
 937                                 // send server notices to all with +s
 938                                 WriteServ(a->fd,"NOTICE %s :%s",a->nick,textbuffer);
 939                         }
 940                 }
 941         }
 942 }
 943
 944 // returns TRUE of any users on channel C occupy server 'servername'.
 945
 946 bool ChanAnyOnThisServer(chanrec *c,char* servername)
 947 {
 948         log(DEBUG,"ChanAnyOnThisServer");
 949
 950         std::vector<char*> *ulist = c->GetUsers();
 951         for (int j = 0; j < ulist->size(); j++)
 952         {
 953                 char* o = (*ulist)[j];
 954                 userrec* user = (userrec*)o;
 955                 if (!strcasecmp(user->server,servername))
 956                         return true;
 957         }
 958         return false;
 959 }
 960
 961 // returns true if user 'u' shares any common channels with any users on server 'servername'
 962
 963 bool CommonOnThisServer(userrec* u,const char* servername)
 964 {
 965         log(DEBUG,"ChanAnyOnThisServer");
 966
 967         for (int i = 0; i < MAXCHANS; i++)
 968         {
 969                 if (u->chans[i].channel)
 970                 {
 971                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 972                         for (int j = 0; j < ulist->size(); j++)
 973                         {
 974                                 char* o = (*ulist)[j];
 975                                 userrec* user = (userrec*)o;
 976                                 if (!strcasecmp(user->server,servername))
 977                                         return true;
 978                         }
 979                 }
 980         }
 981         return false;
 982 }
 983
 984
 985 void NetSendToCommon(userrec* u, char* s)
 986 {
 987         char buffer[MAXBUF];
 988         snprintf(buffer,MAXBUF,"%s",s);
 989
 990         log(DEBUG,"NetSendToCommon: '%s' '%s'",u->nick,s);
 991
 992         std::string msg = buffer;
 993         FOREACH_MOD OnPacketTransmit(msg,s);
 994         strlcpy(buffer,msg.c_str(),MAXBUF);
 995
 996         for (int j = 0; j < 32; j++)
 997         {
 998                 if (me[j] != NULL)
 999                 {
1000                         for (int k = 0; k < me[j]->connectors.size(); k++)
1001                         {
1002                                 if (CommonOnThisServer(u,me[j]->connectors[k].GetServerName().c_str()))
1003                                 {
1004                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1005                                 }
1006                         }
1007                 }
1008         }
1009 }
1010
1011
1012 void NetSendToAll(char* s)
1013 {
1014         char buffer[MAXBUF];
1015         snprintf(buffer,MAXBUF,"%s",s);
1016
1017         log(DEBUG,"NetSendToAll: '%s'",s);
1018
1019         std::string msg = buffer;
1020         FOREACH_MOD OnPacketTransmit(msg,s);
1021         strlcpy(buffer,msg.c_str(),MAXBUF);
1022
1023         for (int j = 0; j < 32; j++)
1024         {
1025                 if (me[j] != NULL)
1026                 {
1027                         for (int k = 0; k < me[j]->connectors.size(); k++)
1028                         {
1029                                 me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1030                         }
1031                 }
1032         }
1033 }
1034
1035 void NetSendToAllAlive(char* s)
1036 {
1037         char buffer[MAXBUF];
1038         snprintf(buffer,MAXBUF,"%s",s);
1039
1040         log(DEBUG,"NetSendToAllAlive: '%s'",s);
1041
1042         std::string msg = buffer;
1043         FOREACH_MOD OnPacketTransmit(msg,s);
1044         strlcpy(buffer,msg.c_str(),MAXBUF);
1045
1046         for (int j = 0; j < 32; j++)
1047         {
1048                 if (me[j] != NULL)
1049                 {
1050                         for (int k = 0; k < me[j]->connectors.size(); k++)
1051                         {
1052                                 if (me[j]->connectors[k].GetState() != STATE_DISCONNECTED)
1053                                 {
1054                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1055                                 }
1056                                 else
1057                                 {
1058                                         log(DEBUG,"%s is dead, not sending to it.",me[j]->connectors[k].GetServerName().c_str());
1059                                 }
1060                         }
1061                 }
1062         }
1063 }
1064
1065
1066 void NetSendToOne(char* target,char* s)
1067 {
1068         char buffer[MAXBUF];
1069         snprintf(buffer,MAXBUF,"%s",s);
1070
1071         log(DEBUG,"NetSendToOne: '%s' '%s'",target,s);
1072
1073         std::string msg = buffer;
1074         FOREACH_MOD OnPacketTransmit(msg,s);
1075         strlcpy(buffer,msg.c_str(),MAXBUF);
1076
1077         for (int j = 0; j < 32; j++)
1078         {
1079                 if (me[j] != NULL)
1080                 {
1081                         for (int k = 0; k < me[j]->connectors.size(); k++)
1082                         {
1083                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1084                                 {
1085                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1086                                 }
1087                         }
1088                 }
1089         }
1090 }
1091
1092 void NetSendToAllExcept(const char* target,char* s)
1093 {
1094         char buffer[MAXBUF];
1095         snprintf(buffer,MAXBUF,"%s",s);
1096
1097         log(DEBUG,"NetSendToAllExcept: '%s' '%s'",target,s);
1098
1099         std::string msg = buffer;
1100         FOREACH_MOD OnPacketTransmit(msg,s);
1101         strlcpy(buffer,msg.c_str(),MAXBUF);
1102
1103         for (int j = 0; j < 32; j++)
1104         {
1105                 if (me[j] != NULL)
1106                 {
1107                         for (int k = 0; k < me[j]->connectors.size(); k++)
1108                         {
1109                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1110                                 {
1111                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1112                                 }
1113                         }
1114                 }
1115         }
1116 }
1117
1118
1119 void WriteMode(const char* modes, int flags, const char* text, ...)
1120 {
1121         if ((!text) || (!modes) || (!flags))
1122         {
1123                 log(DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
1124                 return;
1125         }
1126
1127         char textbuffer[MAXBUF];
1128         va_list argsPtr;
1129         va_start (argsPtr, text);
1130         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1131         va_end(argsPtr);
1132         int modelen = strlen(modes);
1133
1134         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1135         {
1136                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1137                 {
1138                         bool send_to_user = false;
1139
1140                         if (flags == WM_AND)
1141                         {
1142                                 send_to_user = true;
1143                                 for (int n = 0; n < modelen; n++)
1144                                 {
1145                                         if (!hasumode(i->second,modes[n]))
1146                                         {
1147                                                 send_to_user = false;
1148                                                 break;
1149                                         }
1150                                 }
1151                         }
1152                         else if (flags == WM_OR)
1153                         {
1154                                 send_to_user = false;
1155                                 for (int n = 0; n < modelen; n++)
1156                                 {
1157                                         if (hasumode(i->second,modes[n]))
1158                                         {
1159                                                 send_to_user = true;
1160                                                 break;
1161                                         }
1162                                 }
1163                         }
1164
1165                         if (send_to_user)
1166                         {
1167                                 WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
1168                         }
1169                 }
1170         }
1171 }
1172
1173
1174 void WriteWallOps(userrec *source, bool local_only, char* text, ...)
1175 {
1176         if ((!text) || (!source))
1177         {
1178                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
1179                 return;
1180         }
1181
1182         char textbuffer[MAXBUF];
1183         va_list argsPtr;
1184         va_start (argsPtr, text);
1185         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1186         va_end(argsPtr);
1187
1188         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1189         {
1190                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1191                 {
1192                         if (strchr(i->second->modes,'w'))
1193                         {
1194                                 WriteTo(source,i->second,"WALLOPS :%s",textbuffer);
1195                         }
1196                 }
1197         }
1198
1199         if (!local_only)
1200         {
1201                 char buffer[MAXBUF];
1202                 snprintf(buffer,MAXBUF,"@ %s :%s",source->nick,textbuffer);
1203                 NetSendToAll(buffer);
1204         }
1205 }
1206
1207 /* convert a string to lowercase. Note following special circumstances
1208  * taken from RFC 1459. Many "official" server branches still hold to this
1209  * rule so i will too;
1210  *
1211  *  Because of IRC's scandanavian origin, the characters {}| are
1212  *  considered to be the lower case equivalents of the characters []\,
1213  *  respectively. This is a critical issue when determining the
1214  *  equivalence of two nicknames.
1215  */
1216
1217 void strlower(char *n)
1218 {
1219         if (!n)
1220         {
1221                 return;
1222         }
1223         for (int i = 0; n[i] != 0; i++)
1224         {
1225                 n[i] = tolower(n[i]);
1226                 if (n[i] == '[')
1227                         n[i] = '{';
1228                 if (n[i] == ']')
1229                         n[i] = '}';
1230                 if (n[i] == '\\')
1231                         n[i] = '|';
1232         }
1233 }
1234
1235
1236
1237 /* Find a user record by nickname and return a pointer to it */
1238
1239 userrec* Find(std::string nick)
1240 {
1241         user_hash::iterator iter = clientlist.find(nick);
1242
1243         if (iter == clientlist.end())
1244                 /* Couldn't find it */
1245                 return NULL;
1246
1247         return iter->second;
1248 }
1249
1250 /* find a channel record by channel name and return a pointer to it */
1251
1252 chanrec* FindChan(const char* chan)
1253 {
1254         if (!chan)
1255         {
1256                 log(DEFAULT,"*** BUG *** Findchan was given an invalid parameter");
1257                 return NULL;
1258         }
1259
1260         chan_hash::iterator iter = chanlist.find(chan);
1261
1262         if (iter == chanlist.end())
1263                 /* Couldn't find it */
1264                 return NULL;
1265
1266         return iter->second;
1267 }
1268
1269
1270 long GetMaxBans(char* name)
1271 {
1272         char CM[MAXBUF];
1273         for (int count = 0; count < ConfValueEnum("banlist",&config_f); count++)
1274         {
1275                 ConfValue("banlist","chan",count,CM,&config_f);
1276                 if (match(name,CM))
1277                 {
1278                         ConfValue("banlist","limit",count,CM,&config_f);
1279                         return atoi(CM);
1280                 }
1281         }
1282         return 64;
1283 }
1284
1285
1286 void purge_empty_chans(userrec* u)
1287 {
1288
1289         int go_again = 1, purge = 0;
1290
1291         // firstly decrement the count on each channel
1292         for (int f = 0; f < MAXCHANS; f++)
1293         {
1294                 if (u->chans[f].channel)
1295                 {
1296                         u->chans[f].channel->DecUserCounter();
1297                         u->chans[f].channel->DelUser((char*)u);
1298                 }
1299         }
1300
1301         for (int i = 0; i < MAXCHANS; i++)
1302         {
1303                 if (u->chans[i].channel)
1304                 {
1305                         if (!usercount(u->chans[i].channel))
1306                         {
1307                                 chan_hash::iterator i2 = chanlist.find(u->chans[i].channel->name);
1308                                 /* kill the record */
1309                                 if (i2 != chanlist.end())
1310                                 {
1311                                         log(DEBUG,"del_channel: destroyed: %s",i2->second->name);
1312                                         if (i2->second)
1313                                                 delete i2->second;
1314                                         chanlist.erase(i2);
1315                                         go_again = 1;
1316                                         purge++;
1317                                         u->chans[i].channel = NULL;
1318                                 }
1319                         }
1320                         else
1321                         {
1322                                 log(DEBUG,"skipped purge for %s",u->chans[i].channel->name);
1323                         }
1324                 }
1325         }
1326         log(DEBUG,"completed channel purge, killed %lu",(unsigned long)purge);
1327
1328         DeleteOper(u);
1329 }
1330
1331
1332 char scratch[MAXBUF];
1333 char sparam[MAXBUF];
1334
1335 char* chanmodes(chanrec *chan)
1336 {
1337         if (!chan)
1338         {
1339                 log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
1340                 strcpy(scratch,"");
1341                 return scratch;
1342         }
1343
1344         strcpy(scratch,"");
1345         strcpy(sparam,"");
1346         if (chan->noexternal)
1347         {
1348                 strlcat(scratch,"n",MAXMODES);
1349         }
1350         if (chan->topiclock)
1351         {
1352                 strlcat(scratch,"t",MAXMODES);
1353         }
1354         if (chan->key[0])
1355         {
1356                 strlcat(scratch,"k",MAXMODES);
1357         }
1358         if (chan->limit)
1359         {
1360                 strlcat(scratch,"l",MAXMODES);
1361         }
1362         if (chan->inviteonly)
1363         {
1364                 strlcat(scratch,"i",MAXMODES);
1365         }
1366         if (chan->moderated)
1367         {
1368                 strlcat(scratch,"m",MAXMODES);
1369         }
1370         if (chan->secret)
1371         {
1372                 strlcat(scratch,"s",MAXMODES);
1373         }
1374         if (chan->c_private)
1375         {
1376                 strlcat(scratch,"p",MAXMODES);
1377         }
1378         if (chan->key[0])
1379         {
1380                 strlcat(sparam," ",MAXBUF);
1381                 strlcat(sparam,chan->key,MAXBUF);
1382         }
1383         if (chan->limit)
1384         {
1385                 char foo[24];
1386                 sprintf(foo," %lu",(unsigned long)chan->limit);
1387                 strlcat(sparam,foo,MAXBUF);
1388         }
1389         if (*chan->custom_modes)
1390         {
1391                 strlcat(scratch,chan->custom_modes,MAXMODES);
1392                 for (int z = 0; chan->custom_modes[z] != 0; z++)
1393                 {
1394                         std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
1395                         if (extparam != "")
1396                         {
1397                                 strlcat(sparam," ",MAXBUF);
1398                                 strlcat(sparam,extparam.c_str(),MAXBUF);
1399                         }
1400                 }
1401         }
1402         log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam);
1403         strlcat(scratch,sparam,MAXMODES);
1404         return scratch;
1405 }
1406
1407
1408 /* compile a userlist of a channel into a string, each nick seperated by
1409  * spaces and op, voice etc status shown as @ and + */
1410
1411 void userlist(userrec *user,chanrec *c)
1412 {
1413         if ((!c) || (!user))
1414         {
1415                 log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
1416                 return;
1417         }
1418
1419         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1420         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1421         {
1422                 if (has_channel(i->second,c))
1423                 {
1424                         if (isnick(i->second->nick))
1425                         {
1426                                 if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1427                                 {
1428                                         /* user is +i, and source not on the channel, does not show
1429                                          * nick in NAMES list */
1430                                         continue;
1431                                 }
1432                                 strlcat(list,cmode(i->second,c),MAXBUF);
1433                                 strlcat(list,i->second->nick,MAXBUF);
1434                                 strlcat(list," ",MAXBUF);
1435                                 if (strlen(list)>(480-NICKMAX))
1436                                 {
1437                                         /* list overflowed into
1438                                          * multiple numerics */
1439                                         WriteServ(user->fd,"%s",list);
1440                                         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1441                                 }
1442                         }
1443                 }
1444         }
1445         /* if whats left in the list isnt empty, send it */     if (list[strlen(list)-1] != ':')
1446         {
1447                 WriteServ(user->fd,"%s",list);
1448         }
1449 }
1450
1451 /* return a count of the users on a specific channel accounting for
1452  * invisible users who won't increase the count. e.g. for /LIST */
1453
1454 int usercount_i(chanrec *c)
1455 {
1456         int count = 0;
1457
1458         if (!c)
1459         {
1460                 log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
1461                 return 0;
1462         }
1463
1464         strcpy(list,"");
1465         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1466         {
1467                 if (i->second)
1468                 {
1469                         if (has_channel(i->second,c))
1470                         {
1471                                 if (isnick(i->second->nick))
1472                                 {
1473                                         if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1474                                         {
1475                                                 /* user is +i, and source not on the channel, does not show
1476                                                  * nick in NAMES list */
1477                                                 continue;
1478                                         }
1479                                         count++;
1480                                 }
1481                         }
1482                 }
1483         }
1484         log(DEBUG,"usercount_i: %s %lu",c->name,(unsigned long)count);
1485         return count;
1486 }
1487
1488
1489 int usercount(chanrec *c)
1490 {
1491         if (!c)
1492         {
1493                 log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
1494                 return 0;
1495         }
1496         int count = c->GetUserCounter();
1497         log(DEBUG,"usercount: %s %lu",c->name,(unsigned long)count);
1498         return count;
1499 }
1500
1501
1502 /* add a channel to a user, creating the record for it if needed and linking
1503  * it to the user record */
1504
1505 chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
1506 {
1507         if ((!user) || (!cn))
1508         {
1509                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
1510                 return 0;
1511         }
1512
1513         chanrec* Ptr;
1514         int created = 0;
1515         char cname[MAXBUF];
1516
1517         strncpy(cname,cn,MAXBUF);
1518
1519         // we MUST declare this wherever we use FOREACH_RESULT
1520         int MOD_RESULT = 0;
1521
1522         if (strlen(cname) > CHANMAX-1)
1523         {
1524                 cname[CHANMAX-1] = '\0';
1525         }
1526
1527         log(DEBUG,"add_channel: %s %s",user->nick,cname);
1528
1529         if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
1530         {
1531                 return NULL; // already on the channel!
1532         }
1533
1534
1535         if (!FindChan(cname))
1536         {
1537                 MOD_RESULT = 0;
1538                 FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
1539                 if (MOD_RESULT == 1) {
1540                         return NULL;
1541                 }
1542
1543                 /* create a new one */
1544                 log(DEBUG,"add_channel: creating: %s",cname);
1545                 {
1546                         chanlist[cname] = new chanrec();
1547
1548                         strlcpy(chanlist[cname]->name, cname,CHANMAX);
1549                         chanlist[cname]->topiclock = 1;
1550                         chanlist[cname]->noexternal = 1;
1551                         chanlist[cname]->created = TIME;
1552                         strcpy(chanlist[cname]->topic, "");
1553                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
1554                         chanlist[cname]->topicset = 0;
1555                         Ptr = chanlist[cname];
1556                         log(DEBUG,"add_channel: created: %s",cname);
1557                         /* set created to 2 to indicate user
1558                          * is the first in the channel
1559                          * and should be given ops */
1560                         created = 2;
1561                 }
1562         }
1563         else
1564         {
1565                 /* channel exists, just fish out a pointer to its struct */
1566                 Ptr = FindChan(cname);
1567                 if (Ptr)
1568                 {
1569                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
1570
1571                         // the override flag allows us to bypass channel modes
1572                         // and bans (used by servers)
1573                         if ((!override) || (!strcasecmp(user->server,ServerName)))
1574                         {
1575                                 log(DEBUG,"Not overriding...");
1576                                 MOD_RESULT = 0;
1577                                 FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
1578                                 if (MOD_RESULT == 1) {
1579                                         return NULL;
1580                                 }
1581                                 log(DEBUG,"MOD_RESULT=%d",MOD_RESULT);
1582
1583                                 if (!MOD_RESULT)
1584                                 {
1585                                         log(DEBUG,"add_channel: checking key, invite, etc");
1586                                         MOD_RESULT = 0;
1587                                         FOREACH_RESULT(OnCheckKey(user, Ptr, key ? key : ""));
1588                                         if (MOD_RESULT == 0)
1589                                         {
1590                                                 if (Ptr->key[0])
1591                                                 {
1592                                                         log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
1593                                                         if (!key)
1594                                                         {
1595                                                                 log(DEBUG,"add_channel: no key given in JOIN");
1596                                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
1597                                                                 return NULL;
1598                                                         }
1599                                                         else
1600                                                         {
1601                                                                 if (strcasecmp(key,Ptr->key))
1602                                                                 {
1603                                                                         log(DEBUG,"add_channel: bad key given in JOIN");
1604                                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
1605                                                                         return NULL;
1606                                                                 }
1607                                                         }
1608                                                 }
1609                                                 log(DEBUG,"add_channel: no key");
1610                                         }
1611                                         MOD_RESULT = 0;
1612                                         FOREACH_RESULT(OnCheckInvite(user, Ptr));
1613                                         if (MOD_RESULT == 0)
1614                                         {
1615                                                 if (Ptr->inviteonly)
1616                                                 {
1617                                                         log(DEBUG,"add_channel: channel is +i");
1618                                                         if (user->IsInvited(Ptr->name))
1619                                                         {
1620                                                                 /* user was invited to channel */
1621                                                                 /* there may be an optional channel NOTICE here */
1622                                                         }
1623                                                         else
1624                                                         {
1625                                                                 WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
1626                                                                 return NULL;
1627                                                         }
1628                                                 }
1629                                                 log(DEBUG,"add_channel: channel is not +i");
1630                                         }
1631                                         MOD_RESULT = 0;
1632                                         FOREACH_RESULT(OnCheckLimit(user, Ptr));
1633                                         if (MOD_RESULT == 0)
1634                                         {
1635                                                 if (Ptr->limit)
1636                                                 {
1637                                                         if (usercount(Ptr) >= Ptr->limit)
1638                                                         {
1639                                                                 WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
1640                                                                 return NULL;
1641                                                         }
1642                                                 }
1643                                         }
1644                                         log(DEBUG,"add_channel: about to walk banlist");
1645                                         MOD_RESULT = 0;
1646                                         FOREACH_RESULT(OnCheckBan(user, Ptr));
1647                                         if (MOD_RESULT == 0)
1648                                         {
1649                                                 /* check user against the channel banlist */
1650                                                 if (Ptr)
1651                                                 {
1652                                                         if (Ptr->bans.size())
1653                                                         {
1654                                                                 for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1655                                                                 {
1656                                                                         if (match(user->GetFullHost(),i->data))
1657                                                                         {
1658                                                                                 WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
1659                                                                                 return NULL;
1660                                                                         }
1661                                                                 }
1662                                                         }
1663                                                 }
1664                                                 log(DEBUG,"add_channel: bans checked");
1665                                         }
1666
1667                                 }
1668
1669
1670                                 if ((Ptr) && (user))
1671                                 {
1672                                         user->RemoveInvite(Ptr->name);
1673                                 }
1674
1675                                 log(DEBUG,"add_channel: invites removed");
1676
1677                         }
1678                         else
1679                         {
1680                                 log(DEBUG,"Overridden checks");
1681                         }
1682
1683
1684                 }
1685                 created = 1;
1686         }
1687
1688         log(DEBUG,"Passed channel checks");
1689
1690         for (int index =0; index != MAXCHANS; index++)
1691         {
1692                 log(DEBUG,"Check location %d",index);
1693                 if (user->chans[index].channel == NULL)
1694                 {
1695                         log(DEBUG,"Adding into their channel list at location %d",index);
1696
1697                         if (created == 2)
1698                         {
1699                                 /* first user in is given ops */
1700                                 user->chans[index].uc_modes = UCMODE_OP;
1701                         }
1702                         else
1703                         {
1704                                 user->chans[index].uc_modes = 0;
1705                         }
1706                         user->chans[index].channel = Ptr;
1707                         Ptr->IncUserCounter();
1708                         Ptr->AddUser((char*)user);
1709                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
1710
1711                         if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it.
1712                         {
1713                                 // use the stamdard J token with no privilages.
1714                                 char buffer[MAXBUF];
1715                                 if (created == 2)
1716                                 {
1717                                         snprintf(buffer,MAXBUF,"J %s @%s",user->nick,Ptr->name);
1718                                 }
1719                                 else
1720                                 {
1721                                         snprintf(buffer,MAXBUF,"J %s %s",user->nick,Ptr->name);
1722                                 }
1723                                 NetSendToAll(buffer);
1724                         }
1725
1726                         log(DEBUG,"Sent JOIN to client");
1727
1728                         if (Ptr->topicset)
1729                         {
1730                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
1731                                 WriteServ(user->fd,"333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
1732                         }
1733                         userlist(user,Ptr);
1734                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
1735                         //WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
1736                         //WriteServ(user->fd,"329 %s %s %lu", user->nick, Ptr->name, (unsigned long)Ptr->created);
1737                         FOREACH_MOD OnUserJoin(user,Ptr);
1738                         return Ptr;
1739                 }
1740         }
1741         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
1742         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
1743         return NULL;
1744 }
1745
1746 /* remove a channel from a users record, and remove the record from memory
1747  * if the channel has become empty */
1748
1749 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
1750 {
1751         if ((!user) || (!cname))
1752         {
1753                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
1754                 return NULL;
1755         }
1756
1757         chanrec* Ptr;
1758
1759         if ((!cname) || (!user))
1760         {
1761                 return NULL;
1762         }
1763
1764         Ptr = FindChan(cname);
1765
1766         if (!Ptr)
1767         {
1768                 return NULL;
1769         }
1770
1771         FOREACH_MOD OnUserPart(user,Ptr);
1772         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
1773
1774         for (int i =0; i != MAXCHANS; i++)
1775         {
1776                 /* zap it from the channel list of the user */
1777                 if (user->chans[i].channel == Ptr)
1778                 {
1779                         if (reason)
1780                         {
1781                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
1782
1783                                 if (!local)
1784                                 {
1785                                         char buffer[MAXBUF];
1786                                         snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason);
1787                                         NetSendToAll(buffer);
1788                                 }
1789
1790
1791                         }
1792                         else
1793                         {
1794                                 if (!local)
1795                                 {
1796                                         char buffer[MAXBUF];
1797                                         snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name);
1798                                         NetSendToAll(buffer);
1799                                 }
1800
1801                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
1802                         }
1803                         user->chans[i].uc_modes = 0;
1804                         user->chans[i].channel = NULL;
1805                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1806                         break;
1807                 }
1808         }
1809
1810         Ptr->DecUserCounter();
1811         Ptr->DelUser((char*)user);
1812
1813         /* if there are no users left on the channel */
1814         if (!usercount(Ptr))
1815         {
1816                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1817
1818                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1819
1820                 /* kill the record */
1821                 if (iter != chanlist.end())
1822                 {
1823                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1824                         if (iter->second) delete iter->second;
1825                         chanlist.erase(iter);
1826                 }
1827         }
1828 }
1829
1830
1831 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
1832 {
1833         if ((!src) || (!user) || (!Ptr) || (!reason))
1834         {
1835                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
1836                 return;
1837         }
1838
1839         if ((!Ptr) || (!user) || (!src))
1840         {
1841                 return;
1842         }
1843
1844         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
1845
1846         if (!has_channel(user,Ptr))
1847         {
1848                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
1849                 return;
1850         }
1851
1852         int MOD_RESULT = 0;
1853         FOREACH_RESULT(OnAccessCheck(src,user,Ptr,AC_KICK));
1854         if (MOD_RESULT == ACR_DENY)
1855                 return;
1856
1857         if (MOD_RESULT == ACR_DEFAULT)
1858         {
1859                 if (((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) && (!is_uline(src->server)))
1860                 {
1861                         if (cstatus(src,Ptr) == STATUS_HOP)
1862                         {
1863                                 WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
1864                         }
1865                         else
1866                         {
1867                                 WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
1868                         }
1869
1870                         return;
1871                 }
1872         }
1873
1874         MOD_RESULT = 0;
1875         FOREACH_RESULT(OnUserPreKick(src,user,Ptr,reason));
1876         if (MOD_RESULT)
1877                 return;
1878
1879         FOREACH_MOD OnUserKick(src,user,Ptr,reason);
1880
1881         for (int i =0; i != MAXCHANS; i++)
1882         {
1883                 /* zap it from the channel list of the user */
1884                 if (user->chans[i].channel)
1885                 if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
1886                 {
1887                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
1888                         user->chans[i].uc_modes = 0;
1889                         user->chans[i].channel = NULL;
1890                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1891                         break;
1892                 }
1893         }
1894
1895         Ptr->DecUserCounter();
1896         Ptr->DelUser((char*)user);
1897
1898         /* if there are no users left on the channel */
1899         if (!usercount(Ptr))
1900         {
1901                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1902
1903                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1904
1905                 /* kill the record */
1906                 if (iter != chanlist.end())
1907                 {
1908                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1909                         if (iter->second) delete iter->second;
1910                         chanlist.erase(iter);
1911                 }
1912         }
1913 }
1914
1915
1916
1917
1918 /* This function pokes and hacks at a parameter list like the following:
1919  *
1920  * PART #winbot,#darkgalaxy :m00!
1921  *
1922  * to turn it into a series of individual calls like this:
1923  *
1924  * PART #winbot :m00!
1925  * PART #darkgalaxy :m00!
1926  *
1927  * The seperate calls are sent to a callback function provided by the caller
1928  * (the caller will usually call itself recursively). The callback function
1929  * must be a command handler. Calling this function on a line with no list causes
1930  * no action to be taken. You must provide a starting and ending parameter number
1931  * where the range of the list can be found, useful if you have a terminating
1932  * parameter as above which is actually not part of the list, or parameters
1933  * before the actual list as well. This code is used by many functions which
1934  * can function as "one to list" (see the RFC) */
1935
1936 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
1937 {
1938         char plist[MAXBUF];
1939         char *param;
1940         char *pars[32];
1941         char blog[32][MAXBUF];
1942         char blog2[32][MAXBUF];
1943         int j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
1944         char keystr[MAXBUF];
1945         char moo[MAXBUF];
1946
1947         for (int i = 0; i <32; i++)
1948                 strcpy(blog[i],"");
1949
1950         for (int i = 0; i <32; i++)
1951                 strcpy(blog2[i],"");
1952
1953         strcpy(moo,"");
1954         for (int i = 0; i <10; i++)
1955         {
1956                 if (!parameters[i])
1957                 {
1958                         parameters[i] = moo;
1959                 }
1960         }
1961         if (joins)
1962         {
1963                 if (pcnt > 1) /* we have a key to copy */
1964                 {
1965                         strlcpy(keystr,parameters[1],MAXBUF);
1966                 }
1967         }
1968
1969         if (!parameters[start])
1970         {
1971                 return 0;
1972         }
1973         if (!strchr(parameters[start],','))
1974         {
1975                 return 0;
1976         }
1977         strcpy(plist,"");
1978         for (int i = start; i <= end; i++)
1979         {
1980                 if (parameters[i])
1981                 {
1982                         strlcat(plist,parameters[i],MAXBUF);
1983                 }
1984         }
1985
1986         j = 0;
1987         param = plist;
1988
1989         t = strlen(plist);
1990         for (int i = 0; i < t; i++)
1991         {
1992                 if (plist[i] == ',')
1993                 {
1994                         plist[i] = '\0';
1995                         strlcpy(blog[j++],param,MAXBUF);
1996                         param = plist+i+1;
1997                         if (j>20)
1998                         {
1999                                 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
2000                                 return 1;
2001                         }
2002                 }
2003         }
2004         strlcpy(blog[j++],param,MAXBUF);
2005         total = j;
2006
2007         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
2008         {
2009                 strcat(keystr,",");
2010         }
2011
2012         if ((joins) && (keystr))
2013         {
2014                 if (strchr(keystr,','))
2015                 {
2016                         j = 0;
2017                         param = keystr;
2018                         t2 = strlen(keystr);
2019                         for (int i = 0; i < t2; i++)
2020                         {
2021                                 if (keystr[i] == ',')
2022                                 {
2023                                         keystr[i] = '\0';
2024                                         strlcpy(blog2[j++],param,MAXBUF);
2025                                         param = keystr+i+1;
2026                                 }
2027                         }
2028                         strlcpy(blog2[j++],param,MAXBUF);
2029                         total2 = j;
2030                 }
2031         }
2032
2033         for (j = 0; j < total; j++)
2034         {
2035                 if (blog[j])
2036                 {
2037                         pars[0] = blog[j];
2038                 }
2039                 for (q = end; q < pcnt-1; q++)
2040                 {
2041                         if (parameters[q+1])
2042                         {
2043                                 pars[q-end+1] = parameters[q+1];
2044                         }
2045                 }
2046                 if ((joins) && (parameters[1]))
2047                 {
2048                         if (pcnt > 1)
2049                         {
2050                                 pars[1] = blog2[j];
2051                         }
2052                         else
2053                         {
2054                                 pars[1] = NULL;
2055                         }
2056                 }
2057                 /* repeatedly call the function with the hacked parameter list */
2058                 if ((joins) && (pcnt > 1))
2059                 {
2060                         if (pars[1])
2061                         {
2062                                 // pars[1] already set up and containing key from blog2[j]
2063                                 fn(pars,2,u);
2064                         }
2065                         else
2066                         {
2067                                 pars[1] = parameters[1];
2068                                 fn(pars,2,u);
2069                         }
2070                 }
2071                 else
2072                 {
2073                         fn(pars,pcnt-(end-start),u);
2074                 }
2075         }
2076
2077         return 1;
2078 }
2079
2080
2081
2082 void kill_link(userrec *user,const char* r)
2083 {
2084         user_hash::iterator iter = clientlist.find(user->nick);
2085
2086         char reason[MAXBUF];
2087
2088         strncpy(reason,r,MAXBUF);
2089
2090         if (strlen(reason)>MAXQUIT)
2091         {
2092                 reason[MAXQUIT-1] = '\0';
2093         }
2094
2095         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2096         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2097         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
2098
2099         /* bugfix, cant close() a nonblocking socket (sux!) */
2100         if (user->registered == 7) {
2101                 FOREACH_MOD OnUserQuit(user);
2102                 WriteCommonExcept(user,"QUIT :%s",reason);
2103
2104                 // Q token must go to ALL servers!!!
2105                 char buffer[MAXBUF];
2106                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2107                 NetSendToAll(buffer);
2108         }
2109
2110         FOREACH_MOD OnUserDisconnect(user);
2111
2112         if (user->fd > -1)
2113         {
2114                 shutdown(user->fd,2);
2115                 close(user->fd);
2116         }
2117
2118         if (user->registered == 7) {
2119                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
2120                 AddWhoWas(user);
2121         }
2122
2123         if (user->registered == 7) {
2124                 purge_empty_chans(user);
2125         }
2126
2127         if (iter != clientlist.end())
2128         {
2129                 log(DEBUG,"deleting user hash value %lu",(unsigned long)iter->second);
2130                 if ((iter->second) && (user->registered == 7)) {
2131                         if (iter->second) delete iter->second;
2132                 }
2133                 clientlist.erase(iter);
2134         }
2135 }
2136
2137 void kill_link_silent(userrec *user,const char* r)
2138 {
2139         user_hash::iterator iter = clientlist.find(user->nick);
2140
2141         char reason[MAXBUF];
2142
2143         strncpy(reason,r,MAXBUF);
2144
2145         if (strlen(reason)>MAXQUIT)
2146         {
2147                 reason[MAXQUIT-1] = '\0';
2148         }
2149
2150         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2151         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2152         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
2153
2154         /* bugfix, cant close() a nonblocking socket (sux!) */
2155         if (user->registered == 7) {
2156                 FOREACH_MOD OnUserQuit(user);
2157                 WriteCommonExcept(user,"QUIT :%s",reason);
2158
2159                 // Q token must go to ALL servers!!!
2160                 char buffer[MAXBUF];
2161                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2162                 NetSendToAll(buffer);
2163         }
2164
2165         FOREACH_MOD OnUserDisconnect(user);
2166
2167         if (user->fd > -1)
2168         {
2169                 shutdown(user->fd,2);
2170                 close(user->fd);
2171         }
2172
2173         if (user->registered == 7) {
2174                 purge_empty_chans(user);
2175         }
2176
2177         if (iter != clientlist.end())
2178         {
2179                 log(DEBUG,"deleting user hash value %lu",(unsigned long)iter->second);
2180                 if ((iter->second) && (user->registered == 7)) {
2181                         if (iter->second) delete iter->second;
2182                 }
2183                 clientlist.erase(iter);
2184         }
2185 }
2186
2187
2188
2189 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
2190
2191 char* Passwd(userrec *user)
2192 {
2193         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2194         {
2195                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
2196                 {
2197                         return i->pass;
2198                 }
2199         }
2200         return "";
2201 }
2202
2203 bool IsDenied(userrec *user)
2204 {
2205         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2206         {
2207                 if (match(user->host,i->host) && (i->type == CC_DENY))
2208                 {
2209                         return true;
2210                 }
2211         }
2212         return false;
2213 }
2214
2215
2216
2217
2218 /* sends out an error notice to all connected clients (not to be used
2219  * lightly!) */
2220
2221 void send_error(char *s)
2222 {
2223         log(DEBUG,"send_error: %s",s);
2224         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2225         {
2226                 if (isnick(i->second->nick))
2227                 {
2228                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
2229                 }
2230                 else
2231                 {
2232                         // fix - unregistered connections receive ERROR, not NOTICE
2233                         Write(i->second->fd,"ERROR :%s",s);
2234                 }
2235         }
2236 }
2237
2238 void Error(int status)
2239 {
2240         signal (SIGALRM, SIG_IGN);
2241         signal (SIGPIPE, SIG_IGN);
2242         signal (SIGTERM, SIG_IGN);
2243         signal (SIGABRT, SIG_IGN);
2244         signal (SIGSEGV, SIG_IGN);
2245         signal (SIGURG, SIG_IGN);
2246         signal (SIGKILL, SIG_IGN);
2247         log(DEFAULT,"*** fell down a pothole in the road to perfection ***");
2248         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
2249         Exit(status);
2250 }
2251
2252
2253 int main(int argc, char **argv)
2254 {
2255         Start();
2256         srand(time(NULL));
2257         log(DEBUG,"*** InspIRCd starting up!");
2258         if (!FileExists(CONFIG_FILE))
2259         {
2260                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
2261                 log(DEFAULT,"main: no config");
2262                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
2263                 Exit(ERROR);
2264         }
2265         if (argc > 1) {
2266                 for (int i = 1; i < argc; i++)
2267                 {
2268                         if (!strcmp(argv[i],"-nofork")) {
2269                                 nofork = true;
2270                         }
2271                         if (!strcmp(argv[i],"-wait")) {
2272                                 sleep(6);
2273                         }
2274                         if (!strcmp(argv[i],"-nolimit")) {
2275                                 unlimitcore = true;
2276                         }
2277                 }
2278         }
2279         strlcpy(MyExecutable,argv[0],MAXBUF);
2280
2281         if (InspIRCd() == ERROR)
2282         {
2283                 log(DEFAULT,"main: daemon function bailed");
2284                 printf("ERROR: could not initialise. Shutting down.\n");
2285                 Exit(ERROR);
2286         }
2287         Exit(TRUE);
2288         return 0;
2289 }
2290
2291 template<typename T> inline string ConvToStr(const T &in)
2292 {
2293         stringstream tmp;
2294         if (!(tmp << in)) return string();
2295         return tmp.str();
2296 }
2297
2298 /* re-allocates a nick in the user_hash after they change nicknames,
2299  * returns a pointer to the new user as it may have moved */
2300
2301 userrec* ReHashNick(char* Old, char* New)
2302 {
2303         //user_hash::iterator newnick;
2304         user_hash::iterator oldnick = clientlist.find(Old);
2305
2306         log(DEBUG,"ReHashNick: %s %s",Old,New);
2307
2308         if (!strcasecmp(Old,New))
2309         {
2310                 log(DEBUG,"old nick is new nick, skipping");
2311                 return oldnick->second;
2312         }
2313
2314         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
2315
2316         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
2317
2318         clientlist[New] = new userrec();
2319         clientlist[New] = oldnick->second;
2320         clientlist.erase(oldnick);
2321
2322         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
2323
2324         return clientlist[New];
2325 }
2326
2327 /* adds or updates an entry in the whowas list */
2328 void AddWhoWas(userrec* u)
2329 {
2330         user_hash::iterator iter = whowas.find(u->nick);
2331         userrec *a = new userrec();
2332         strlcpy(a->nick,u->nick,NICKMAX);
2333         strlcpy(a->ident,u->ident,64);
2334         strlcpy(a->dhost,u->dhost,256);
2335         strlcpy(a->host,u->host,256);
2336         strlcpy(a->fullname,u->fullname,128);
2337         strlcpy(a->server,u->server,256);
2338         a->signon = u->signon;
2339
2340         /* MAX_WHOWAS:   max number of /WHOWAS items
2341          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
2342          *               can be replaced by a newer one
2343          */
2344
2345         if (iter == whowas.end())
2346         {
2347                 if (whowas.size() == WHOWAS_MAX)
2348                 {
2349                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
2350                         {
2351                                 // 3600 seconds in an hour ;)
2352                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
2353                                 {
2354                                         if (i->second) delete i->second;
2355                                         i->second = a;
2356                                         log(DEBUG,"added WHOWAS entry, purged an old record");
2357                                         return;
2358                                 }
2359                         }
2360                 }
2361                 else
2362                 {
2363                         log(DEBUG,"added fresh WHOWAS entry");
2364                         whowas[a->nick] = a;
2365                 }
2366         }
2367         else
2368         {
2369                 log(DEBUG,"updated WHOWAS entry");
2370                 if (iter->second) delete iter->second;
2371                 iter->second = a;
2372         }
2373 }
2374
2375
2376 /* add a client connection to the sockets list */
2377 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
2378 {
2379         string tempnick;
2380         char tn2[MAXBUF];
2381         user_hash::iterator iter;
2382
2383         tempnick = ConvToStr(socket) + "-unknown";
2384         sprintf(tn2,"%lu-unknown",(unsigned long)socket);
2385
2386         iter = clientlist.find(tempnick);
2387
2388         if (iter != clientlist.end()) return;
2389
2390         /*
2391          * It is OK to access the value here this way since we know
2392          * it exists, we just created it above.
2393          *
2394          * At NO other time should you access a value in a map or a
2395          * hash_map this way.
2396          */
2397         clientlist[tempnick] = new userrec();
2398
2399         NonBlocking(socket);
2400         log(DEBUG,"AddClient: %lu %s %d %s",(unsigned long)socket,host,port,ip);
2401
2402         clientlist[tempnick]->fd = socket;
2403         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
2404         strncpy(clientlist[tempnick]->host, host,160);
2405         strncpy(clientlist[tempnick]->dhost, host,160);
2406         strncpy(clientlist[tempnick]->server, ServerName,256);
2407         strncpy(clientlist[tempnick]->ident, "unknown",12);
2408         clientlist[tempnick]->registered = 0;
2409         clientlist[tempnick]->signon = TIME+dns_timeout;
2410         clientlist[tempnick]->lastping = 1;
2411         clientlist[tempnick]->port = port;
2412         strncpy(clientlist[tempnick]->ip,ip,32);
2413
2414         // set the registration timeout for this user
2415         unsigned long class_regtimeout = 90;
2416         int class_flood = 0;
2417
2418         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2419         {
2420                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2421                 {
2422                         class_regtimeout = (unsigned long)i->registration_timeout;
2423                         class_flood = i->flood;
2424                         clientlist[tempnick]->pingmax = i->pingtime;
2425                         break;
2426                 }
2427         }
2428
2429         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax+dns_timeout;
2430         clientlist[tempnick]->timeout = TIME+class_regtimeout;
2431         clientlist[tempnick]->flood = class_flood;
2432
2433         for (int i = 0; i < MAXCHANS; i++)
2434         {
2435                 clientlist[tempnick]->chans[i].channel = NULL;
2436                 clientlist[tempnick]->chans[i].uc_modes = 0;
2437         }
2438
2439         if (clientlist.size() == MAXCLIENTS)
2440                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
2441
2442
2443         char* e = matches_exception(ip);
2444         if (!e)
2445         {
2446                 char* r = matches_zline(ip);
2447                 if (r)
2448                 {
2449                         char reason[MAXBUF];
2450                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
2451                         kill_link(clientlist[tempnick],reason);
2452                 }
2453         }
2454 }
2455
2456 // this function counts all users connected, wether they are registered or NOT.
2457 int usercnt(void)
2458 {
2459         return clientlist.size();
2460 }
2461
2462 // this counts only registered users, so that the percentages in /MAP don't mess up when users are sitting in an unregistered state
2463 int registered_usercount(void)
2464 {
2465         int c = 0;
2466         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2467         {
2468                 if ((i->second->fd) && (isnick(i->second->nick))) c++;
2469         }
2470         return c;
2471 }
2472
2473 int usercount_invisible(void)
2474 {
2475         int c = 0;
2476
2477         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2478         {
2479                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
2480         }
2481         return c;
2482 }
2483
2484 int usercount_opers(void)
2485 {
2486         int c = 0;
2487
2488         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2489         {
2490                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
2491         }
2492         return c;
2493 }
2494
2495 int usercount_unknown(void)
2496 {
2497         int c = 0;
2498
2499         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2500         {
2501                 if ((i->second->fd) && (i->second->registered != 7))
2502                         c++;
2503         }
2504         return c;
2505 }
2506
2507 long chancount(void)
2508 {
2509         return chanlist.size();
2510 }
2511
2512 long count_servs(void)
2513 {
2514         int c = 0;
2515         for (int i = 0; i < 32; i++)
2516         {
2517                 if (me[i] != NULL)
2518                 {
2519                         for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2520                         {
2521                                 if (strcasecmp(j->GetServerName().c_str(),ServerName))
2522                                 {
2523                                         c++;
2524                                 }
2525                         }
2526                 }
2527         }
2528         return c;
2529 }
2530
2531 long servercount(void)
2532 {
2533         return count_servs()+1;
2534 }
2535
2536 long local_count()
2537 {
2538         int c = 0;
2539         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2540         {
2541                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
2542         }
2543         return c;
2544 }
2545
2546
2547 void ShowMOTD(userrec *user)
2548 {
2549         std::string WholeMOTD = "";
2550         if (!MOTD.size())
2551         {
2552                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
2553                 return;
2554         }
2555         WholeMOTD = std::string(":") + std::string(ServerName) + std::string(" 375 ") + std::string(user->nick) + std::string(" :- ") + std::string(ServerName) + " message of the day\r\n";
2556         for (int i = 0; i != MOTD.size(); i++)
2557         {
2558                 WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 372 ") + std::string(user->nick) + std::string(" :- ") + MOTD[i] + std::string("\r\n");
2559         }
2560         WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 376 ") + std::string(user->nick) + std::string(" :End of message of the day.\r\n");
2561         // only one write operation
2562         send(user->fd,WholeMOTD.c_str(),WholeMOTD.length(),0);
2563
2564 }
2565
2566 void ShowRULES(userrec *user)
2567 {
2568         if (!RULES.size())
2569         {
2570                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
2571                 return;
2572         }
2573         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
2574         for (int i = 0; i != RULES.size(); i++)
2575         {
2576                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
2577         }
2578         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
2579 }
2580
2581 /* shows the message of the day, and any other on-logon stuff */
2582 void FullConnectUser(userrec* user)
2583 {
2584         user->registered = 7;
2585         user->idle_lastmsg = TIME;
2586         log(DEBUG,"ConnectUser: %s",user->nick);
2587
2588         if ((strcmp(Passwd(user),"")) && (!user->haspassed))
2589         {
2590                 kill_link(user,"Invalid password");
2591                 return;
2592         }
2593         if (IsDenied(user))
2594         {
2595                 kill_link(user,"Unauthorised connection");
2596                 return;
2597         }
2598
2599         char match_against[MAXBUF];
2600         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
2601         char* e = matches_exception(match_against);
2602         if (!e)
2603         {
2604                 char* r = matches_gline(match_against);
2605                 if (r)
2606                 {
2607                         char reason[MAXBUF];
2608                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
2609                         kill_link_silent(user,reason);
2610                         return;
2611                 }
2612                 r = matches_kline(user->host);
2613                 if (r)
2614                 {
2615                         char reason[MAXBUF];
2616                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
2617                         kill_link_silent(user,reason);
2618                         return;
2619                 }
2620         }
2621
2622         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
2623         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
2624         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
2625         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
2626         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
2627         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
2628         std::stringstream v;
2629         v << "MESHED WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
2630         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
2631         v << " TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 CHANMODES=ohvb,k,l,psmnti NETWORK=";
2632         v << std::string(Network);
2633         std::string data005 = v.str();
2634         FOREACH_MOD On005Numeric(data005);
2635         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
2636         // so i'd better split it :)
2637         std::stringstream out(data005);
2638         std::string token = "";
2639         std::string line5 = "";
2640         int token_counter = 0;
2641         while (!out.eof())
2642         {
2643                 out >> token;
2644                 line5 = line5 + token + " ";
2645                 token_counter++;
2646                 if ((token_counter >= 13) || (out.eof() == true))
2647                 {
2648                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
2649                         line5 = "";
2650                         token_counter = 0;
2651                 }
2652         }
2653         ShowMOTD(user);
2654         FOREACH_MOD OnUserConnect(user);
2655         WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,user->ip);
2656
2657         char buffer[MAXBUF];
2658         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);
2659         NetSendToAll(buffer);
2660 }
2661
2662
2663 // this returns 1 when all modules are satisfied that the user should be allowed onto the irc server
2664 // (until this returns true, a user will block in the waiting state, waiting to connect up to the
2665 // registration timeout maximum seconds)
2666 bool AllModulesReportReady(userrec* user)
2667 {
2668         for (int i = 0; i <= MODCOUNT; i++)
2669         {
2670                 int res = modules[i]->OnCheckReady(user);
2671                         if (!res)
2672                                 return false;
2673         }
2674         return true;
2675 }
2676
2677 /* shows the message of the day, and any other on-logon stuff */
2678 void ConnectUser(userrec *user)
2679 {
2680         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
2681         if ((user->dns_done) && (user->registered >= 3) && (AllModulesReportReady(user)))
2682         {
2683                 FullConnectUser(user);
2684         }
2685 }
2686
2687 std::string GetVersionString()
2688 {
2689         char Revision[] = "$Revision$";
2690         char versiondata[MAXBUF];
2691         char *s1 = Revision;
2692         char *savept;
2693         char *v2 = strtok_r(s1," ",&savept);
2694         s1 = savept;
2695         v2 = strtok_r(s1," ",&savept);
2696         s1 = savept;
2697         snprintf(versiondata,MAXBUF,"%s Rev. %s %s :%s (O=%lu)",VERSION,v2,ServerName,SYSTEM,(unsigned long)OPTIMISATION);
2698         return versiondata;
2699 }
2700
2701 void handle_version(char **parameters, int pcnt, userrec *user)
2702 {
2703         if (!pcnt)
2704         {
2705                 WriteServ(user->fd,"351 %s :%s",user->nick,GetVersionString().c_str());
2706         }
2707         else
2708         {
2709                 for (int j = 0; j < 32; j++)
2710                 {
2711                         if (me[j] != NULL)
2712                         {
2713                                 for (int x = 0; x < me[j]->connectors.size(); x++)
2714                                 {
2715                                         if (match(me[j]->connectors[x].GetServerName().c_str(),parameters[0]))
2716                                         {
2717                                                 WriteServ(user->fd,"351 %s :%s",user->nick,me[j]->connectors[x].GetVersionString().c_str());
2718                                                 return;
2719                                         }
2720                                 }
2721                         }
2722                 }
2723                 WriteServ(user->fd,"402 %s %s :No such server",user->nick,parameters[0]);
2724         }
2725         return;
2726 }
2727
2728
2729 // calls a handler function for a command
2730
2731 void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
2732 {
2733                 for (int i = 0; i < cmdlist.size(); i++)
2734                 {
2735                         if (!strcasecmp(cmdlist[i].command,commandname))
2736                         {
2737                                 if (cmdlist[i].handler_function)
2738                                 {
2739                                         if (pcnt>=cmdlist[i].min_params)
2740                                         {
2741                                                 if (strchr(user->modes,cmdlist[i].flags_needed))
2742                                                 {
2743                                                         cmdlist[i].handler_function(parameters,pcnt,user);
2744                                                 }
2745                                         }
2746                                 }
2747                         }
2748                 }
2749 }
2750
2751 void DoSplitEveryone()
2752 {
2753         bool go_again = true;
2754         while (go_again)
2755         {
2756                 go_again = false;
2757                 for (int i = 0; i < 32; i++)
2758                 {
2759                         if (me[i] != NULL)
2760                         {
2761                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2762                                 {
2763                                         if (strcasecmp(j->GetServerName().c_str(),ServerName))
2764                                         {
2765                                                 j->routes.clear();
2766                                                 j->CloseConnection();
2767                                                 me[i]->connectors.erase(j);
2768                                                 go_again = true;
2769                                                 break;
2770                                         }
2771                                 }
2772                         }
2773                 }
2774         }
2775         log(DEBUG,"Removed server. Will remove clients...");
2776         // iterate through the userlist and remove all users on this server.
2777         // because we're dealing with a mesh, we dont have to deal with anything
2778         // "down-route" from this server (nice huh)
2779         go_again = true;
2780         char reason[MAXBUF];
2781         while (go_again)
2782         {
2783                 go_again = false;
2784                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
2785                 {
2786                         if (strcasecmp(u->second->server,ServerName))
2787                         {
2788                                 snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server);
2789                                 kill_link(u->second,reason);
2790                                 go_again = true;
2791                                 break;
2792                         }
2793                 }
2794         }
2795 }
2796
2797
2798
2799 char islast(const char* s)
2800 {
2801         char c = '`';
2802         for (int j = 0; j < 32; j++)
2803         {
2804                 if (me[j] != NULL)
2805                 {
2806                         for (int k = 0; k < me[j]->connectors.size(); k++)
2807                         {
2808                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2809                                 {
2810                                         c = '|';
2811                                 }
2812                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2813                                 {
2814                                         c = '`';
2815                                 }
2816                         }
2817                 }
2818         }
2819         return c;
2820 }
2821
2822 long map_count(const char* s)
2823 {
2824         int c = 0;
2825         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2826         {
2827                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
2828         }
2829         return c;
2830 }
2831
2832
2833 void force_nickchange(userrec* user,const char* newnick)
2834 {
2835         char nick[MAXBUF];
2836         int MOD_RESULT = 0;
2837
2838         strcpy(nick,"");
2839
2840         FOREACH_RESULT(OnUserPreNick(user,newnick));
2841         if (MOD_RESULT) {
2842                 kill_link(user,"Nickname collision");
2843                 return;
2844         }
2845         if (matches_qline(newnick))
2846         {
2847                 kill_link(user,"Nickname collision");
2848                 return;
2849         }
2850
2851         if (user)
2852         {
2853                 if (newnick)
2854                 {
2855                         strncpy(nick,newnick,MAXBUF);
2856                 }
2857                 if (user->registered == 7)
2858                 {
2859                         char* pars[1];
2860                         pars[0] = nick;
2861                         handle_nick(pars,1,user);
2862                 }
2863         }
2864 }
2865
2866
2867 int process_parameters(char **command_p,char *parameters)
2868 {
2869         int j = 0;
2870         int q = strlen(parameters);
2871         if (!q)
2872         {
2873                 /* no parameters, command_p invalid! */
2874                 return 0;
2875         }
2876         if (parameters[0] == ':')
2877         {
2878                 command_p[0] = parameters+1;
2879                 return 1;
2880         }
2881         if (q)
2882         {
2883                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
2884                 {
2885                         /* only one parameter */
2886                         command_p[0] = parameters;
2887                         if (parameters[0] == ':')
2888                         {
2889                                 if (strchr(parameters,' ') != NULL)
2890                                 {
2891                                         command_p[0]++;
2892                                 }
2893                         }
2894                         return 1;
2895                 }
2896         }
2897         command_p[j++] = parameters;
2898         for (int i = 0; i <= q; i++)
2899         {
2900                 if (parameters[i] == ' ')
2901                 {
2902                         command_p[j++] = parameters+i+1;
2903                         parameters[i] = '\0';
2904                         if (command_p[j-1][0] == ':')
2905                         {
2906                                 *command_p[j-1]++; /* remove dodgy ":" */
2907                                 break;
2908                                 /* parameter like this marks end of the sequence */
2909                         }
2910                 }
2911         }
2912         return j; /* returns total number of items in the list */
2913 }
2914
2915 void process_command(userrec *user, char* cmd)
2916 {
2917         char *parameters;
2918         char *command;
2919         char *command_p[127];
2920         char p[MAXBUF], temp[MAXBUF];
2921         int j, items, cmd_found;
2922
2923         for (int i = 0; i < 127; i++)
2924                 command_p[i] = NULL;
2925
2926         if (!user)
2927         {
2928                 return;
2929         }
2930         if (!cmd)
2931         {
2932                 return;
2933         }
2934         if (!cmd[0])
2935         {
2936                 return;
2937         }
2938
2939         int total_params = 0;
2940         if (strlen(cmd)>2)
2941         {
2942                 for (int q = 0; q < strlen(cmd)-1; q++)
2943                 {
2944                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
2945                         {
2946                                 total_params++;
2947                                 // found a 'trailing', we dont count them after this.
2948                                 break;
2949                         }
2950                         if (cmd[q] == ' ')
2951                                 total_params++;
2952                 }
2953         }
2954
2955         // another phidjit bug...
2956         if (total_params > 126)
2957         {
2958                 *(strchr(cmd,' ')) = '\0';
2959                 WriteServ(user->fd,"421 %s %s :Too many parameters given",user->nick,cmd);
2960                 return;
2961         }
2962
2963         strlcpy(temp,cmd,MAXBUF);
2964
2965         std::string tmp = cmd;
2966         for (int i = 0; i <= MODCOUNT; i++)
2967         {
2968                 std::string oldtmp = tmp;
2969                 modules[i]->OnServerRaw(tmp,true,user);
2970                 if (oldtmp != tmp)
2971                 {
2972                         log(DEBUG,"A Module changed the input string!");
2973                         log(DEBUG,"New string: %s",tmp.c_str());
2974                         log(DEBUG,"Old string: %s",oldtmp.c_str());
2975                         break;
2976                 }
2977         }
2978         strlcpy(cmd,tmp.c_str(),MAXBUF);
2979         strlcpy(temp,cmd,MAXBUF);
2980
2981         if (!strchr(cmd,' '))
2982         {
2983                 /* no parameters, lets skip the formalities and not chop up
2984                  * the string */
2985                 log(DEBUG,"About to preprocess command with no params");
2986                 items = 0;
2987                 command_p[0] = NULL;
2988                 parameters = NULL;
2989                 for (int i = 0; i <= strlen(cmd); i++)
2990                 {
2991                         cmd[i] = toupper(cmd[i]);
2992                 }
2993                 command = cmd;
2994         }
2995         else
2996         {
2997                 strcpy(cmd,"");
2998                 j = 0;
2999                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
3000                 for (int i = 0; i < strlen(temp); i++)
3001                 {
3002                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
3003                         {
3004                                 cmd[j++] = temp[i];
3005                                 cmd[j] = 0;
3006                         }
3007                 }
3008                 /* split the full string into a command plus parameters */
3009                 parameters = p;
3010                 strcpy(p," ");
3011                 command = cmd;
3012                 if (strchr(cmd,' '))
3013                 {
3014                         for (int i = 0; i <= strlen(cmd); i++)
3015                         {
3016                                 /* capitalise the command ONLY, leave params intact */
3017                                 cmd[i] = toupper(cmd[i]);
3018                                 /* are we nearly there yet?! :P */
3019                                 if (cmd[i] == ' ')
3020                                 {
3021                                         command = cmd;
3022                                         parameters = cmd+i+1;
3023                                         cmd[i] = '\0';
3024                                         break;
3025                                 }
3026                         }
3027                 }
3028                 else
3029                 {
3030                         for (int i = 0; i <= strlen(cmd); i++)
3031                         {
3032                                 cmd[i] = toupper(cmd[i]);
3033                         }
3034                 }
3035
3036         }
3037         cmd_found = 0;
3038
3039         if (strlen(command)>MAXCOMMAND)
3040         {
3041                 WriteServ(user->fd,"421 %s %s :Command too long",user->nick,command);
3042                 return;
3043         }
3044
3045         for (int x = 0; x < strlen(command); x++)
3046         {
3047                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
3048                 {
3049                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
3050                         {
3051                                 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
3052                                 {
3053                                         WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3054                                         return;
3055                                 }
3056                         }
3057                 }
3058         }
3059
3060         for (int i = 0; i != cmdlist.size(); i++)
3061         {
3062                 if (cmdlist[i].command[0])
3063                 {
3064                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
3065                         {
3066                                 if (parameters)
3067                                 {
3068                                         if (parameters[0])
3069                                         {
3070                                                 items = process_parameters(command_p,parameters);
3071                                         }
3072                                         else
3073                                         {
3074                                                 items = 0;
3075                                                 command_p[0] = NULL;
3076                                         }
3077                                 }
3078                                 else
3079                                 {
3080                                         items = 0;
3081                                         command_p[0] = NULL;
3082                                 }
3083
3084                                 if (user)
3085                                 {
3086                                         /* activity resets the ping pending timer */
3087                                         user->nping = TIME + user->pingmax;
3088                                         if ((items) < cmdlist[i].min_params)
3089                                         {
3090                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
3091                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
3092                                                 return;
3093                                         }
3094                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
3095                                         {
3096                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3097                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
3098                                                 cmd_found = 1;
3099                                                 return;
3100                                         }
3101                                         if ((cmdlist[i].flags_needed) && (!user->HasPermission(command)))
3102                                         {
3103                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3104                                                 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
3105                                                 cmd_found = 1;
3106                                                 return;
3107                                         }
3108                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
3109                                          * deny command! */
3110                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
3111                                         {
3112                                                 if ((!isnick(user->nick)) || (user->registered != 7))
3113                                                 {
3114                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
3115                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
3116                                                         return;
3117                                                 }
3118                                         }
3119                                         if ((user->registered == 7) && (!strchr(user->modes,'o')))
3120                                         {
3121                                                 char* mycmd;
3122                                                 char* savept2;
3123                                                 mycmd = strtok_r(DisabledCommands," ",&savept2);
3124                                                 while (mycmd)
3125                                                 {
3126                                                         if (!strcasecmp(mycmd,command))
3127                                                         {
3128                                                                 // command is disabled!
3129                                                                 WriteServ(user->fd,"421 %s %s :This command has been disabled.",user->nick,command);
3130                                                                 return;
3131                                                         }
3132                                                         mycmd = strtok_r(NULL," ",&savept2);
3133                                                 }
3134
3135
3136                                         }
3137                                         if ((user->registered == 7) || (!strncmp(command,"USER",4)) || (!strncmp(command,"NICK",4)) || (!strncmp(command,"PASS",4)))
3138                                         {
3139                                                 if (cmdlist[i].handler_function)
3140                                                 {
3141
3142                                                         /* ikky /stats counters */
3143                                                         if (temp)
3144                                                         {
3145                                                                 if (user)
3146                                                                 {
3147                                                                         user->bytes_in += strlen(temp);
3148                                                                         user->cmds_in++;
3149                                                                         user->bytes_out+=strlen(temp);
3150                                                                         user->cmds_out++;
3151                                                                 }
3152                                                                 cmdlist[i].use_count++;
3153                                                                 cmdlist[i].total_bytes+=strlen(temp);
3154                                                         }
3155
3156                                                         int MOD_RESULT = 0;
3157                                                         FOREACH_RESULT(OnPreCommand(command,command_p,items,user));
3158                                                         if (MOD_RESULT == 1) {
3159                                                                 return;
3160                                                         }
3161
3162                                                         /* WARNING: nothing may come after the
3163                                                          * command handler call, as the handler
3164                                                          * may free the user structure! */
3165
3166                                                         cmdlist[i].handler_function(command_p,items,user);
3167                                                 }
3168                                                 return;
3169                                         }
3170                                         else
3171                                         {
3172                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
3173                                                 return;
3174                                         }
3175                                 }
3176                                 cmd_found = 1;
3177                         }
3178                 }
3179         }
3180         if ((!cmd_found) && (user))
3181         {
3182                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3183         }
3184 }
3185
3186
3187 void createcommand(char* cmd, handlerfunc f, char flags, int minparams,char* source)
3188 {
3189         command_t comm;
3190         /* create the command and push it onto the table */
3191         strlcpy(comm.command,cmd,MAXBUF);
3192         strlcpy(comm.source,source,MAXBUF);
3193         comm.handler_function = f;
3194         comm.flags_needed = flags;
3195         comm.min_params = minparams;
3196         comm.use_count = 0;
3197         comm.total_bytes = 0;
3198         cmdlist.push_back(comm);
3199         log(DEBUG,"Added command %s (%lu parameters)",cmd,(unsigned long)minparams);
3200 }
3201
3202 bool removecommands(const char* source)
3203 {
3204         bool go_again = true;
3205         while (go_again)
3206         {
3207                 go_again = false;
3208                 for (std::deque<command_t>::iterator i = cmdlist.begin(); i != cmdlist.end(); i++)
3209                 {
3210                         if (!strcmp(i->source,source))
3211                         {
3212                                 log(DEBUG,"removecommands(%s) Removing dependent command: %s",i->source,i->command);
3213                                 cmdlist.erase(i);
3214                                 go_again = true;
3215                                 break;
3216                         }
3217                 }
3218         }
3219         return true;
3220 }
3221
3222 void SetupCommandTable(void)
3223 {
3224         createcommand("USER",handle_user,0,4,"<core>");
3225         createcommand("NICK",handle_nick,0,1,"<core>");
3226         createcommand("QUIT",handle_quit,0,0,"<core>");
3227         createcommand("VERSION",handle_version,0,0,"<core>");
3228         createcommand("PING",handle_ping,0,1,"<core>");
3229         createcommand("PONG",handle_pong,0,1,"<core>");
3230         createcommand("ADMIN",handle_admin,0,0,"<core>");
3231         createcommand("PRIVMSG",handle_privmsg,0,2,"<core>");
3232         createcommand("INFO",handle_info,0,0,"<core>");
3233         createcommand("TIME",handle_time,0,0,"<core>");
3234         createcommand("WHOIS",handle_whois,0,1,"<core>");
3235         createcommand("WALLOPS",handle_wallops,'o',1,"<core>");
3236         createcommand("NOTICE",handle_notice,0,2,"<core>");
3237         createcommand("JOIN",handle_join,0,1,"<core>");
3238         createcommand("NAMES",handle_names,0,0,"<core>");
3239         createcommand("PART",handle_part,0,1,"<core>");
3240         createcommand("KICK",handle_kick,0,2,"<core>");
3241         createcommand("MODE",handle_mode,0,1,"<core>");
3242         createcommand("TOPIC",handle_topic,0,1,"<core>");
3243         createcommand("WHO",handle_who,0,1,"<core>");
3244         createcommand("MOTD",handle_motd,0,0,"<core>");
3245         createcommand("RULES",handle_rules,0,0,"<core>");
3246         createcommand("OPER",handle_oper,0,2,"<core>");
3247         createcommand("LIST",handle_list,0,0,"<core>");
3248         createcommand("DIE",handle_die,'o',1,"<core>");
3249         createcommand("RESTART",handle_restart,'o',1,"<core>");
3250         createcommand("KILL",handle_kill,'o',2,"<core>");
3251         createcommand("REHASH",handle_rehash,'o',0,"<core>");
3252         createcommand("LUSERS",handle_lusers,0,0,"<core>");
3253         createcommand("STATS",handle_stats,0,1,"<core>");
3254         createcommand("USERHOST",handle_userhost,0,1,"<core>");
3255         createcommand("AWAY",handle_away,0,0,"<core>");
3256         createcommand("ISON",handle_ison,0,0,"<core>");
3257         createcommand("SUMMON",handle_summon,0,0,"<core>");
3258         createcommand("USERS",handle_users,0,0,"<core>");
3259         createcommand("INVITE",handle_invite,0,2,"<core>");
3260         createcommand("PASS",handle_pass,0,1,"<core>");
3261         createcommand("TRACE",handle_trace,'o',0,"<core>");
3262         createcommand("WHOWAS",handle_whowas,0,1,"<core>");
3263         createcommand("CONNECT",handle_connect,'o',1,"<core>");
3264         createcommand("SQUIT",handle_squit,'o',0,"<core>");
3265         createcommand("MODULES",handle_modules,0,0,"<core>");
3266         createcommand("LINKS",handle_links,0,0,"<core>");
3267         createcommand("MAP",handle_map,0,0,"<core>");
3268         createcommand("KLINE",handle_kline,'o',1,"<core>");
3269         createcommand("GLINE",handle_gline,'o',1,"<core>");
3270         createcommand("ZLINE",handle_zline,'o',1,"<core>");
3271         createcommand("QLINE",handle_qline,'o',1,"<core>");
3272         createcommand("ELINE",handle_eline,'o',1,"<core>");
3273         createcommand("LOADMODULE",handle_loadmodule,'o',1,"<core>");
3274         createcommand("UNLOADMODULE",handle_unloadmodule,'o',1,"<core>");
3275         createcommand("SERVER",handle_server,0,0,"<core>");
3276 }
3277
3278 void process_buffer(const char* cmdbuf,userrec *user)
3279 {
3280         if (!user)
3281         {
3282                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3283                 return;
3284         }
3285         char cmd[MAXBUF];
3286         if (!cmdbuf)
3287         {
3288                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3289                 return;
3290         }
3291         if (!cmdbuf[0])
3292         {
3293                 return;
3294         }
3295         while (*cmdbuf == ' ') cmdbuf++; // strip leading spaces
3296
3297         strlcpy(cmd,cmdbuf,MAXBUF);
3298         if (!cmd[0])
3299         {
3300                 return;
3301         }
3302         int sl = strlen(cmd)-1;
3303         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3304         {
3305                 cmd[sl] = '\0';
3306         }
3307         sl = strlen(cmd)-1;
3308         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3309         {
3310                 cmd[sl] = '\0';
3311         }
3312         sl = strlen(cmd)-1;
3313         while (cmd[sl] == ' ') // strip trailing spaces
3314         {
3315                 cmd[sl] = '\0';
3316                 sl = strlen(cmd)-1;
3317         }
3318
3319         if (!cmd[0])
3320         {
3321                 return;
3322         }
3323         log(DEBUG,"CMDIN: %s %s",user->nick,cmd);
3324         tidystring(cmd);
3325         if ((user) && (cmd))
3326         {
3327                 process_command(user,cmd);
3328         }
3329 }
3330
3331 void DoSync(serverrec* serv, char* tcp_host)
3332 {
3333         char data[MAXBUF];
3334         log(DEBUG,"Sending sync");
3335         // send start of sync marker: Y <timestamp>
3336         // at this point the ircd receiving it starts broadcasting this netburst to all ircds
3337         // except the ones its receiving it from.
3338         snprintf(data,MAXBUF,"Y %lu",(unsigned long)TIME);
3339         serv->SendPacket(data,tcp_host);
3340         // send users and channels
3341
3342         NetSendMyRoutingTable();
3343
3344         // send all routing table and uline voodoo. The ordering of these commands is IMPORTANT!
3345         for (int j = 0; j < 32; j++)
3346         {
3347                 if (me[j] != NULL)
3348                 {
3349                         for (int k = 0; k < me[j]->connectors.size(); k++)
3350                         {
3351                                 if (is_uline(me[j]->connectors[k].GetServerName().c_str()))
3352                                 {
3353                                         snprintf(data,MAXBUF,"H %s",me[j]->connectors[k].GetServerName().c_str());
3354                                         serv->SendPacket(data,tcp_host);
3355                                 }
3356                         }
3357                 }
3358         }
3359
3360         // send our version for the remote side to cache
3361         snprintf(data,MAXBUF,"v %s %s",ServerName,GetVersionString().c_str());
3362         serv->SendPacket(data,tcp_host);
3363
3364         // sync the users and channels, give the modules a look-in.
3365         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
3366         {
3367                 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);
3368                 serv->SendPacket(data,tcp_host);
3369                 if (strchr(u->second->modes,'o'))
3370                 {
3371                         snprintf(data,MAXBUF,"| %s %s",u->second->nick,u->second->oper);
3372                         serv->SendPacket(data,tcp_host);
3373                 }
3374                 for (int i = 0; i <= MODCOUNT; i++)
3375                 {
3376                         string_list l = modules[i]->OnUserSync(u->second);
3377                         for (int j = 0; j < l.size(); j++)
3378                         {
3379                                 strlcpy(data,l[j].c_str(),MAXBUF);
3380                                 serv->SendPacket(data,tcp_host);
3381                         }
3382                 }
3383                 char* chl = chlist(u->second);
3384                 if (strcmp(chl,""))
3385                 {
3386                         snprintf(data,MAXBUF,"J %s %s",u->second->nick,chl);
3387                         serv->SendPacket(data,tcp_host);
3388                 }
3389         }
3390         // send channel modes, topics etc...
3391         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
3392         {
3393                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
3394                 serv->SendPacket(data,tcp_host);
3395                 for (int i = 0; i <= MODCOUNT; i++)
3396                 {
3397                         string_list l = modules[i]->OnChannelSync(c->second);
3398                         for (int j = 0; j < l.size(); j++)
3399                         {
3400                                 strlcpy(data,l[j].c_str(),MAXBUF);
3401                                 serv->SendPacket(data,tcp_host);
3402                         }
3403                 }
3404                 if (c->second->topic[0])
3405                 {
3406                         snprintf(data,MAXBUF,"T %lu %s %s :%s",(unsigned long)c->second->topicset,c->second->setby,c->second->name,c->second->topic);
3407                         serv->SendPacket(data,tcp_host);
3408                 }
3409                 // send current banlist
3410
3411                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
3412                 {
3413                         snprintf(data,MAXBUF,"M %s +b %s",c->second->name,b->data);
3414                         serv->SendPacket(data,tcp_host);
3415                 }
3416         }
3417         // sync global zlines, glines, etc
3418         sync_xlines(serv,tcp_host);
3419
3420         snprintf(data,MAXBUF,"F %lu",(unsigned long)TIME);
3421         serv->SendPacket(data,tcp_host);
3422         log(DEBUG,"Sent sync");
3423         // ircd sends its serverlist after the end of sync here
3424 }
3425
3426
3427 void NetSendMyRoutingTable()
3428 {
3429         // send out a line saying what is reachable to us.
3430         // E.g. if A is linked to B C and D, send out:
3431         // $ A B C D
3432         // if its only linked to B and D send out:
3433         // $ A B D
3434         // if it has no links, dont even send out the line at all.
3435         char buffer[MAXBUF];
3436         snprintf(buffer,MAXBUF,"$ %s",ServerName);
3437         bool sendit = false;
3438         for (int i = 0; i < 32; i++)
3439         {
3440                 if (me[i] != NULL)
3441                 {
3442                         for (int j = 0; j < me[i]->connectors.size(); j++)
3443                         {
3444                                 if ((me[i]->connectors[j].GetState() != STATE_DISCONNECTED) || (is_uline(me[i]->connectors[j].GetServerName().c_str())))
3445                                 {
3446                                         strlcat(buffer," ",MAXBUF);
3447                                         strlcat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF);
3448                                         sendit = true;
3449                                 }
3450                         }
3451                 }
3452         }
3453         if (sendit)
3454                 NetSendToAll(buffer);
3455 }
3456
3457
3458 void DoSplit(const char* params)
3459 {
3460         bool go_again = true;
3461         while (go_again)
3462         {
3463                 go_again = false;
3464                 for (int i = 0; i < 32; i++)
3465                 {
3466                         if (me[i] != NULL)
3467                         {
3468                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3469                                 {
3470                                         if (!strcasecmp(j->GetServerName().c_str(),params))
3471                                         {
3472                                                 j->routes.clear();
3473                                                 j->CloseConnection();
3474                                                 me[i]->connectors.erase(j);
3475                                                 go_again = true;
3476                                                 break;
3477                                         }
3478                                 }
3479                         }
3480                 }
3481         }
3482         log(DEBUG,"Removed server. Will remove clients...");
3483         // iterate through the userlist and remove all users on this server.
3484         // because we're dealing with a mesh, we dont have to deal with anything
3485         // "down-route" from this server (nice huh)
3486         go_again = true;
3487         char reason[MAXBUF];
3488         snprintf(reason,MAXBUF,"%s %s",ServerName,params);
3489         while (go_again)
3490         {
3491                 go_again = false;
3492                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3493                 {
3494                         if (!strcasecmp(u->second->server,params))
3495                         {
3496                                 kill_link(u->second,reason);
3497                                 go_again = true;
3498                                 break;
3499                         }
3500                 }
3501         }
3502 }
3503
3504 // removes a server. Will NOT remove its users!
3505
3506 void RemoveServer(const char* name)
3507 {
3508         bool go_again = true;
3509         while (go_again)
3510         {
3511                 go_again = false;
3512                 for (int i = 0; i < 32; i++)
3513                 {
3514                         if (me[i] != NULL)
3515                         {
3516                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3517                                 {
3518                                         if (!strcasecmp(j->GetServerName().c_str(),name))
3519                                         {
3520                                                 j->routes.clear();
3521                                                 j->CloseConnection();
3522                                                 me[i]->connectors.erase(j);
3523                                                 go_again = true;
3524                                                 break;
3525                                         }
3526                                 }
3527                         }
3528                 }
3529         }
3530 }
3531
3532
3533 char MODERR[MAXBUF];
3534
3535 char* ModuleError()
3536 {
3537         return MODERR;
3538 }
3539
3540 void erase_factory(int j)
3541 {
3542         int v = 0;
3543         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
3544         {
3545                 if (v == j)
3546                 {
3547                         factory.erase(t);
3548                         factory.push_back(NULL);
3549                         return;
3550                 }
3551                 v++;
3552         }
3553 }
3554
3555 void erase_module(int j)
3556 {
3557         int v1 = 0;
3558         for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
3559         {
3560                 if (v1 == j)
3561                 {
3562                         delete *m;
3563                         modules.erase(m);
3564                         modules.push_back(NULL);
3565                         break;
3566                 }
3567                 v1++;
3568         }
3569         int v2 = 0;
3570         for (std::vector<std::string>::iterator v = module_names.begin(); v != module_names.end(); v++)
3571         {
3572                 if (v2 == j)
3573                 {
3574                        module_names.erase(v);
3575                        break;
3576                 }
3577                 v2++;
3578         }
3579
3580 }
3581
3582 bool UnloadModule(const char* filename)
3583 {
3584         for (int j = 0; j != module_names.size(); j++)
3585         {
3586                 if (module_names[j] == std::string(filename))
3587                 {
3588                         if (modules[j]->GetVersion().Flags & VF_STATIC)
3589                         {
3590                                 log(DEFAULT,"Failed to unload STATIC module %s",filename);
3591                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
3592                                 return false;
3593                         }
3594                         // found the module
3595                         log(DEBUG,"Deleting module...");
3596                         erase_module(j);
3597                         log(DEBUG,"Erasing module entry...");
3598                         erase_factory(j);
3599                         log(DEBUG,"Removing dependent commands...");
3600                         removecommands(filename);
3601                         log(DEFAULT,"Module %s unloaded",filename);
3602                         MODCOUNT--;
3603                         return true;
3604                 }
3605         }
3606         log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
3607         snprintf(MODERR,MAXBUF,"Module not loaded");
3608         return false;
3609 }
3610
3611 bool DirValid(char* dirandfile)
3612 {
3613         char work[MAXBUF];
3614         strlcpy(work,dirandfile,MAXBUF);
3615         int p = strlen(work);
3616         // we just want the dir
3617         while (strlen(work))
3618         {
3619                 if (work[p] == '/')
3620                 {
3621                         work[p] = '\0';
3622                         break;
3623                 }
3624                 work[p--] = '\0';
3625         }
3626         char buffer[MAXBUF], otherdir[MAXBUF];
3627         // Get the current working directory
3628         if( getcwd( buffer, MAXBUF ) == NULL )
3629                 return false;
3630         chdir(work);
3631         if( getcwd( otherdir, MAXBUF ) == NULL )
3632                 return false;
3633         chdir(buffer);
3634         if (strlen(otherdir) >= strlen(work))
3635         {
3636                 otherdir[strlen(work)] = '\0';
3637                 if (!strcmp(otherdir,work))
3638                 {
3639                         return true;
3640                 }
3641                 return false;
3642         }
3643         else return false;
3644 }
3645
3646 bool LoadModule(const char* filename)
3647 {
3648         char modfile[MAXBUF];
3649         snprintf(modfile,MAXBUF,"%s/%s",ModPath,filename);
3650         if (!DirValid(modfile))
3651         {
3652                 log(DEFAULT,"Module %s is not within the modules directory.",modfile);
3653                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
3654                 return false;
3655         }
3656         log(DEBUG,"Loading module: %s",modfile);
3657         if (FileExists(modfile))
3658         {
3659                 for (int j = 0; j < module_names.size(); j++)
3660                 {
3661                         if (module_names[j] == std::string(filename))
3662                         {
3663                                 log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
3664                                 snprintf(MODERR,MAXBUF,"Module already loaded");
3665                                 return false;
3666                         }
3667                 }
3668                 ircd_module* a = new ircd_module(modfile);
3669                 factory[MODCOUNT+1] = a;
3670                 if (factory[MODCOUNT+1]->LastError())
3671                 {
3672                         log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
3673                         snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
3674                         MODCOUNT--;
3675                         return false;
3676                 }
3677                 if (factory[MODCOUNT+1]->factory)
3678                 {
3679                         Module* m = factory[MODCOUNT+1]->factory->CreateModule();
3680                         modules[MODCOUNT+1] = m;
3681                         /* save the module and the module's classfactory, if
3682                          * this isnt done, random crashes can occur :/ */
3683                         module_names.push_back(filename);
3684                 }
3685                 else
3686                 {
3687                         log(DEFAULT,"Unable to load %s",modfile);
3688                         snprintf(MODERR,MAXBUF,"Factory function failed!");
3689                         return false;
3690                 }
3691         }
3692         else
3693         {
3694                 log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
3695                 snprintf(MODERR,MAXBUF,"Module file could not be found");
3696                 return false;
3697         }
3698         MODCOUNT++;
3699         return true;
3700 }
3701
3702 int InspIRCd(void)
3703 {
3704         struct sockaddr_in client,server;
3705         char addrs[MAXBUF][255];
3706         int incomingSockfd, result = TRUE;
3707         socklen_t length;
3708         int count = 0;
3709         int selectResult = 0, selectResult2 = 0;
3710         char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
3711         fd_set selectFds;
3712         timeval tv;
3713
3714         log_file = fopen("ircd.log","a+");
3715         if (!log_file)
3716         {
3717                 printf("ERROR: Could not write to logfile ircd.log, bailing!\n\n");
3718                 Exit(ERROR);
3719         }
3720
3721         log(DEFAULT,"$Id$");
3722         if (geteuid() == 0)
3723         {
3724                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
3725                 Exit(ERROR);
3726                 log(DEFAULT,"InspIRCd: startup: not starting with UID 0!");
3727         }
3728         SetupCommandTable();
3729         log(DEBUG,"InspIRCd: startup: default command table set up");
3730
3731         ReadConfig(true,NULL);
3732         if (DieValue[0])
3733         {
3734                 printf("WARNING: %s\n\n",DieValue);
3735                 log(DEFAULT,"Ut-Oh, somebody didn't read their config file: '%s'",DieValue);
3736                 exit(0);
3737         }
3738         log(DEBUG,"InspIRCd: startup: read config");
3739
3740         int clientportcount = 0, serverportcount = 0;
3741
3742         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
3743         {
3744                 ConfValue("bind","port",count,configToken,&config_f);
3745                 ConfValue("bind","address",count,Addr,&config_f);
3746                 ConfValue("bind","type",count,Type,&config_f);
3747                 if (!strcmp(Type,"servers"))
3748                 {
3749                         char Default[MAXBUF];
3750                         strcpy(Default,"no");
3751                         ConfValue("bind","default",count,Default,&config_f);
3752                         if (strchr(Default,'y'))
3753                         {
3754                                 defaultRoute = serverportcount;
3755                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
3756                         }
3757                         me[serverportcount] = new serverrec(ServerName,100L,false);
3758                         if (!me[serverportcount]->CreateListener(Addr,atoi(configToken)))
3759                         {
3760                                 log(DEFAULT,"Warning: Failed to bind port %lu",(unsigned long)atoi(configToken));
3761                                 printf("Warning: Failed to bind port %lu\n",(unsigned long)atoi(configToken));
3762                         }
3763                         else
3764                         {
3765                                 serverportcount++;
3766                         }
3767                 }
3768                 else
3769                 {
3770                         ports[clientportcount] = atoi(configToken);
3771                         strlcpy(addrs[clientportcount],Addr,256);
3772                         clientportcount++;
3773                 }
3774                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
3775         }
3776         portCount = clientportcount;
3777         UDPportCount = serverportcount;
3778
3779         log(DEBUG,"InspIRCd: startup: read %lu total client ports and %lu total server ports",(unsigned long)portCount,(unsigned long)UDPportCount);
3780         log(DEBUG,"InspIRCd: startup: InspIRCd is now starting!");
3781
3782         printf("\n");
3783
3784         /* BugFix By Craig! :p */
3785         MODCOUNT = -1;
3786         for (count = 0; count < ConfValueEnum("module",&config_f); count++)
3787         {
3788                 ConfValue("module","name",count,configToken,&config_f);
3789                 printf("Loading module... \033[1;32m%s\033[0m\n",configToken);
3790                 if (!LoadModule(configToken))
3791                 {
3792                         log(DEFAULT,"Exiting due to a module loader error.");
3793                         printf("\nThere was an error loading a module: %s\n\nYou might want to do './inspircd start' instead of 'bin/inspircd'\n\n",ModuleError());
3794                         Exit(0);
3795                 }
3796         }
3797         log(DEFAULT,"Total loaded modules: %lu",(unsigned long)MODCOUNT+1);
3798
3799         startup_time = time(NULL);
3800
3801         char PID[MAXBUF];
3802         ConfValue("pid","file",0,PID,&config_f);
3803         // write once here, to try it out and make sure its ok
3804         WritePID(PID);
3805
3806         /* setup select call */
3807         FD_ZERO(&selectFds);
3808         log(DEBUG,"InspIRCd: startup: zero selects");
3809         log(VERBOSE,"InspIRCd: startup: portCount = %lu", (unsigned long)portCount);
3810
3811         for (count = 0; count < portCount; count++)
3812         {
3813                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
3814                 {
3815                         log(DEBUG,"InspIRCd: startup: bad fd %lu",(unsigned long)openSockfd[boundPortCount]);
3816                         return(ERROR);
3817                 }
3818                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
3819                 {
3820                         log(DEFAULT,"InspIRCd: startup: failed to bind port %lu",(unsigned long)ports[count]);
3821                 }
3822                 else    /* well we at least bound to one socket so we'll continue */
3823                 {
3824                         boundPortCount++;
3825                 }
3826         }
3827
3828         log(DEBUG,"InspIRCd: startup: total bound ports %lu",(unsigned long)boundPortCount);
3829
3830         /* if we didn't bind to anything then abort */
3831         if (boundPortCount == 0)
3832         {
3833                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
3834                 printf("\nERROR: Was not able to bind any of %lu ports! Please check your configuration.\n\n", (unsigned long)portCount);
3835                 return (ERROR);
3836         }
3837
3838
3839         printf("\nInspIRCd is now running!\n");
3840
3841         if (nofork)
3842         {
3843                 log(VERBOSE,"Not forking as -nofork was specified");
3844         }
3845         else
3846         {
3847                 if (DaemonSeed() == ERROR)
3848                 {
3849                         log(DEFAULT,"InspIRCd: startup: can't daemonise");
3850                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
3851                         Exit(ERROR);
3852                 }
3853         }
3854
3855         WritePID(PID);
3856
3857         length = sizeof (client);
3858         char udp_msg[MAXBUF],tcp_host[MAXBUF];
3859
3860         fd_set serverfds;
3861         timeval tvs;
3862         tvs.tv_usec = 10000L;
3863         tvs.tv_sec = 0;
3864         tv.tv_sec = 0;
3865         tv.tv_usec = 10000L;
3866         char data[65535];
3867         timeval tval;
3868         fd_set sfd;
3869         tval.tv_usec = 10000L;
3870         tval.tv_sec = 0;
3871         int total_in_this_set = 0;
3872         int v = 0;
3873         bool expire_run = false;
3874
3875         /* main loop, this never returns */
3876         for (;;)
3877         {
3878 #ifdef _POSIX_PRIORITY_SCHEDULING
3879                 sched_yield();
3880 #endif
3881                 // poll dns queue
3882                 dns_poll();
3883                 FD_ZERO(&sfd);
3884
3885                 // we only read time() once per iteration rather than tons of times!
3886                 TIME = time(NULL);
3887
3888                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
3889                 // them in a list, then reap the list every second or so.
3890                 if (((TIME % 5) == 0) && (!expire_run))
3891                 {
3892                         expire_lines();
3893                         FOREACH_MOD OnBackgroundTimer(TIME);
3894                         expire_run = true;
3895                         continue;
3896                 }
3897                 if ((TIME % 5) == 1)
3898                         expire_run = false;
3899
3900                 // fix by brain - this must be below any manipulation of the hashmap by modules
3901                 user_hash::iterator count2 = clientlist.begin();
3902
3903                 FD_ZERO(&serverfds);
3904
3905                 for (int x = 0; x != UDPportCount; x++)
3906                 {
3907                         if (me[x])
3908                                 FD_SET(me[x]->fd, &serverfds);
3909                 }
3910
3911                 // serverFds timevals went here
3912
3913                 tvs.tv_usec = 30000L;
3914                 tvs.tv_sec = 0;
3915                 int servresult = select(32767, &serverfds, NULL, NULL, &tvs);
3916                 if (servresult > 0)
3917                 {
3918                         for (int x = 0; x != UDPportCount; x++)
3919                         {
3920                                 if ((me[x]) && (FD_ISSET (me[x]->fd, &serverfds)))
3921                                 {
3922                                         char remotehost[MAXBUF],resolved[MAXBUF];
3923                                         length = sizeof (client);
3924                                         incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length);
3925                                         if (incomingSockfd != -1)
3926                                         {
3927                                                 strlcpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF);
3928                                                 if(CleanAndResolve(resolved, remotehost) != TRUE)
3929                                                 {
3930                                                         strlcpy(resolved,remotehost,MAXBUF);
3931                                                 }
3932                                                 // add to this connections ircd_connector vector
3933                                                 // *FIX* - we need the LOCAL port not the remote port in &client!
3934                                                 me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port);
3935                                         }
3936                                 }
3937                         }
3938                 }
3939
3940                 for (int x = 0; x < UDPportCount; x++)
3941                 {
3942                         std::deque<std::string> msgs;
3943                         msgs.clear();
3944                         if ((me[x]) && (me[x]->RecvPacket(msgs, tcp_host)))
3945                         {
3946                                 for (int ctr = 0; ctr < msgs.size(); ctr++)
3947                                 {
3948                                         strlcpy(udp_msg,msgs[ctr].c_str(),MAXBUF);
3949                                         log(DEBUG,"Processing: %s",udp_msg);
3950                                         if (!udp_msg[0])
3951                                         {
3952                                                 log(DEBUG,"Invalid string from %s [route%lu]",tcp_host,(unsigned long)x);
3953                                                 break;
3954                                         }
3955                                         // during a netburst, send all data to all other linked servers
3956                                         if ((((nb_start>0) && (udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))) || (is_uline(tcp_host)))
3957                                         {
3958                                                 if (is_uline(tcp_host))
3959                                                 {
3960                                                         if ((udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))
3961                                                         {
3962                                                                 NetSendToAllExcept(tcp_host,udp_msg);
3963                                                         }
3964                                                 }
3965                                                 else
3966                                                         NetSendToAllExcept(tcp_host,udp_msg);
3967                                         }
3968                                         std::string msg = udp_msg;
3969                                         FOREACH_MOD OnPacketReceive(msg,tcp_host);
3970                                         strlcpy(udp_msg,msg.c_str(),MAXBUF);
3971                                         handle_link_packet(udp_msg, tcp_host, me[x]);
3972                                 }
3973                                 goto label;
3974                         }
3975                 }
3976
3977
3978         while (count2 != clientlist.end())
3979         {
3980                 FD_ZERO(&sfd);
3981                 total_in_this_set = 0;
3982
3983                 user_hash::iterator xcount = count2;
3984                 user_hash::iterator endingiter = count2;
3985
3986                 if (count2 == clientlist.end()) break;
3987
3988                 if (count2->second)
3989                 if (count2->second->fd != 0)
3990                 {
3991                         // assemble up to 64 sockets into an fd_set
3992                         // to implement a pooling mechanism.
3993                         //
3994                         // This should be up to 64x faster than the
3995                         // old implementation.
3996                         while (total_in_this_set < 64)
3997                         {
3998                                 if (count2 != clientlist.end())
3999                                 {
4000                                         // we don't check the state of remote users.
4001                                         if ((count2->second->fd != -1) && (count2->second->fd != FD_MAGIC_NUMBER))
4002                                         {
4003                                                 FD_SET (count2->second->fd, &sfd);
4004
4005                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
4006                                                 // their connection class.
4007                                                 if ((TIME > count2->second->timeout) && (count2->second->registered != 7))
4008                                                 {
4009                                                         log(DEBUG,"InspIRCd: registration timeout: %s",count2->second->nick);
4010                                                         kill_link(count2->second,"Registration timeout");
4011                                                         goto label;
4012                                                 }
4013                                                 if ((TIME > count2->second->signon) && (count2->second->registered == 3) && (AllModulesReportReady(count2->second)))
4014                                                 {
4015                                                         log(DEBUG,"signon exceed, registered=3, and modules ready, OK");
4016                                                         count2->second->dns_done = true;
4017                                                         FullConnectUser(count2->second);
4018                                                         goto label;
4019                                                 }
4020                                                 if ((count2->second->dns_done) && (count2->second->registered == 3) && (AllModulesReportReady(count2->second))) // both NICK and USER... and DNS
4021                                                 {
4022                                                         log(DEBUG,"dns done, registered=3, and modules ready, OK");
4023                                                         FullConnectUser(count2->second);
4024                                                         goto label;
4025                                                 }
4026                                                 if ((TIME > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7))
4027                                                 {
4028                                                         if ((!count2->second->lastping) && (count2->second->registered == 7))
4029                                                         {
4030                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",count2->second->nick);
4031                                                                 kill_link(count2->second,"Ping timeout");
4032                                                                 goto label;
4033                                                         }
4034                                                         Write(count2->second->fd,"PING :%s",ServerName);
4035                                                         log(DEBUG,"InspIRCd: pinging: %s",count2->second->nick);
4036                                                         count2->second->lastping = 0;
4037                                                         count2->second->nping = TIME+count2->second->pingmax;   // was hard coded to 120
4038                                                 }
4039                                         }
4040                                         count2++;
4041                                         total_in_this_set++;
4042                                 }
4043                                 else break;
4044                         }
4045
4046                         endingiter = count2;
4047                         count2 = xcount; // roll back to where we were
4048
4049                         v = 0;
4050
4051                         // tvals defined here
4052
4053                         tval.tv_usec = 1000L;
4054                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
4055
4056                         // now loop through all of the items in this pool if any are waiting
4057                         //if (selectResult2 > 0)
4058                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
4059                         {
4060
4061 #ifdef _POSIX_PRIORITY_SCHEDULING
4062                                 sched_yield();
4063 #endif
4064
4065                                 result = EAGAIN;
4066                                 if ((count2a->second->fd != FD_MAGIC_NUMBER) && (count2a->second->fd != -1) && (FD_ISSET (count2a->second->fd, &sfd)))
4067                                 {
4068                                         result = read(count2a->second->fd, data, 65535);
4069                                         if (result)
4070                                         {
4071                                                 // perform a check on the raw buffer as an array (not a string!) to remove
4072                                                 // characters 0 and 7 which are illegal in the RFC - replace them with spaces.
4073                                                 // hopefully this should stop even more people whining about "Unknown command: *"
4074                                                 for (int checker = 0; checker < result; checker++)
4075                                                 {
4076                                                         if ((data[checker] == 0) || (data[checker] == 7))
4077                                                                 data[checker] = ' ';
4078                                                 }
4079                                                 if (result > 0)
4080                                                         data[result] = '\0';
4081                                                 userrec* current = count2a->second;
4082                                                 int currfd = current->fd;
4083                                                 int floodlines = 0;
4084                                                 current->AddBuffer(data);
4085                                                 if (current->recvq.length() > NetBufferSize)
4086                                                 {
4087                                                         if (current->registered == 7)
4088                                                         {
4089                                                                 kill_link(current,"RecvQ exceeded");
4090                                                         }
4091                                                         else
4092                                                         {
4093                                                                 add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
4094                                                                 apply_lines();
4095                                                         }
4096                                                         goto label;
4097                                                 }
4098                                                 // while there are complete lines to process...
4099                                                 while (current->BufferIsReady())
4100                                                 {
4101                                                         floodlines++;
4102                                                         if ((floodlines > current->flood) && (current->flood != 0))
4103                                                         {
4104                                                                 if (current->registered == 7)
4105                                                                 {
4106                                                                         log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4107                                                                         WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4108                                                                         kill_link(current,"Excess flood");
4109                                                                 }
4110                                                                 else
4111                                                                 {
4112                                                                         add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
4113                                                                         apply_lines();
4114                                                                 }
4115                                                                 goto label;
4116                                                         }
4117                                                         char sanitized[MAXBUF];
4118                                                         // use GetBuffer to copy single lines into the sanitized string
4119                                                         strlcpy(sanitized,current->GetBuffer().c_str(),MAXBUF);
4120                                                         if (*sanitized)
4121                                                         {
4122                                                                 // we're gonna re-scan to check if the nick is gone, after every
4123                                                                 // command - if it has, we're gonna bail
4124                                                                 bool find_again = false;
4125                                                                 process_buffer(sanitized,current);
4126                                                                 // look for the user's record in case it's changed
4127                                                                 for (user_hash::iterator c2 = clientlist.begin(); c2 != clientlist.end(); c2++)
4128                                                                 {
4129                                                                         if (c2->second->fd == currfd)
4130                                                                         {
4131                                                                                 // found again, update pointer
4132                                                                                 current == c2->second;
4133                                                                                 find_again = true;
4134                                                                                 break;
4135                                                                         }
4136                                                                 }
4137                                                                 if (!find_again)
4138                                                                         goto label;
4139
4140                                                         }
4141                                                 }
4142                                                 goto label;
4143                                         }
4144
4145                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
4146                                         {
4147                                                 log(DEBUG,"killing: %s",count2a->second->nick);
4148                                                 kill_link(count2a->second,strerror(errno));
4149                                                 goto label;
4150                                         }
4151                                 }
4152                                 // result EAGAIN means nothing read
4153                                 if (result == EAGAIN)
4154                                 {
4155                                 }
4156                                 else
4157                                 if (result == 0)
4158                                 {
4159                                         if (count2->second)
4160                                         {
4161                                                 log(DEBUG,"InspIRCd: Exited: %s",count2a->second->nick);
4162                                                 kill_link(count2a->second,"Client exited");
4163                                                 // must bail here? kill_link removes the hash, corrupting the iterator
4164                                                 log(DEBUG,"Bailing from client exit");
4165                                                 goto label;
4166                                         }
4167                                 }
4168                                 else if (result > 0)
4169                                 {
4170                                 }
4171                         }
4172                 }
4173                 for (int q = 0; q < total_in_this_set; q++)
4174                 {
4175                         count2++;
4176                 }
4177         }
4178
4179 #ifdef _POSIX_PRIORITY_SCHEDULING
4180         sched_yield();
4181 #endif
4182
4183         // set up select call
4184         for (count = 0; count < boundPortCount; count++)
4185         {
4186                 FD_SET (openSockfd[count], &selectFds);
4187         }
4188
4189         tv.tv_usec = 30000L;
4190         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
4191
4192         /* select is reporting a waiting socket. Poll them all to find out which */
4193         if (selectResult > 0)
4194         {
4195                 char target[MAXBUF], resolved[MAXBUF];
4196                 for (count = 0; count < boundPortCount; count++)
4197                 {
4198                         if (FD_ISSET (openSockfd[count], &selectFds))
4199                         {
4200                                 length = sizeof (client);
4201                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
4202
4203                                 strlcpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
4204                                 strlcpy (resolved, target, MAXBUF);
4205
4206                                 if (incomingSockfd < 0)
4207                                 {
4208                                         WriteOpers("*** WARNING: Accept failed on port %lu (%s)",(unsigned long)ports[count],target);
4209                                         log(DEBUG,"InspIRCd: accept failed: %lu",(unsigned long)ports[count]);
4210                                 }
4211                                 else
4212                                 {
4213                                         AddClient(incomingSockfd, resolved, ports[count], false, inet_ntoa (client.sin_addr));
4214                                         log(DEBUG,"InspIRCd: adding client on port %lu fd=%lu",(unsigned long)ports[count],(unsigned long)incomingSockfd);
4215                                 }
4216                                 goto label;
4217                         }
4218                 }
4219         }
4220         label:
4221         if (0) {};
4222 #ifdef _POSIX_PRIORITY_SCHEDULING
4223         sched_yield();
4224 #endif
4225 }
4226 /* not reached */
4227 close (incomingSockfd);
4228 }
4229