src/users.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  Inspire is copyright (C) 2002-2006 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 using namespace std;
  18
  19 #include "inspircd_config.h"
  20 #include "channels.h"
  21 #include "connection.h"
  22 #include "users.h"
  23 #include "inspircd.h"
  24 #include <stdio.h>
  25 #ifdef THREADED_DNS
  26 #include <pthread.h>
  27 #include <signal.h>
  28 #endif
  29 #include "inspstring.h"
  30 #include "commands.h"
  31 #include "helperfuncs.h"
  32 #include "typedefs.h"
  33 #include "socketengine.h"
  34 #include "hashcomp.h"
  35 #include "message.h"
  36 #include "wildcard.h"
  37 #include "xline.h"
  38 #include "cull_list.h"
  39
  40 extern InspIRCd* ServerInstance;
  41 extern int WHOWAS_STALE;
  42 extern int WHOWAS_MAX;
  43 extern std::vector<Module*> modules;
  44 extern std::vector<ircd_module*> factory;
  45 extern std::vector<InspSocket*> module_sockets;
  46 extern int MODCOUNT;
  47 extern InspSocket* socket_ref[MAX_DESCRIPTORS];
  48 extern time_t TIME;
  49 extern userrec* fd_ref_table[MAX_DESCRIPTORS];
  50 extern ServerConfig *Config;
  51 extern user_hash clientlist;
  52 extern whowas_hash whowas;
  53 extern std::vector<userrec*> local_users;
  54
  55 std::vector<userrec*> all_opers;
  56
  57 template<typename T> inline string ConvToStr(const T &in)
  58 {
  59         stringstream tmp;
  60         if (!(tmp << in)) return string();
  61         return tmp.str();
  62 }
  63
  64 userrec::userrec()
  65 {
  66         // the PROPER way to do it, AVOID bzero at *ALL* costs
  67         *nick = *ident = *host = *dhost = *fullname = *modes = *awaymsg = *oper = *ip = 0;
  68         server = (char*)FindServerNamePtr(Config->ServerName);
  69         reset_due = TIME;
  70         lines_in = fd = lastping = signon = idle_lastmsg = nping = registered = 0;
  71         timeout = flood = port = bytes_in = bytes_out = cmds_in = cmds_out = 0;
  72         haspassed = dns_done = false;
  73         recvq = "";
  74         sendq = "";
  75         chans.clear();
  76         invites.clear();
  77 }
  78
  79 userrec::~userrec()
  80 {
  81 }
  82
  83 void userrec::CloseSocket()
  84 {
  85         shutdown(this->fd,2);
  86         close(this->fd);
  87 }
  88
  89 char* userrec::GetFullHost()
  90 {
  91         static char result[MAXBUF];
  92         snprintf(result,MAXBUF,"%s!%s@%s",nick,ident,dhost);
  93         return result;
  94 }
  95
  96 int userrec::ReadData(void* buffer, size_t size)
  97 {
  98         if (this->fd > -1)
  99         {
 100                 return read(this->fd, buffer, size);
 101         }
 102         else return 0;
 103 }
 104
 105
 106 char* userrec::GetFullRealHost()
 107 {
 108         static char fresult[MAXBUF];
 109         snprintf(fresult,MAXBUF,"%s!%s@%s",nick,ident,host);
 110         return fresult;
 111 }
 112
 113 bool userrec::IsInvited(irc::string &channel)
 114 {
 115         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 116         {
 117                 irc::string compare = i->channel;
 118                 if (compare == channel)
 119                 {
 120                         return true;
 121                 }
 122         }
 123         return false;
 124 }
 125
 126 InvitedList* userrec::GetInviteList()
 127 {
 128         return &invites;
 129 }
 130
 131 void userrec::InviteTo(irc::string &channel)
 132 {
 133         Invited i;
 134         i.channel = channel;
 135         invites.push_back(i);
 136 }
 137
 138 void userrec::RemoveInvite(irc::string &channel)
 139 {
 140         log(DEBUG,"Removing invites");
 141         if (invites.size())
 142         {
 143                 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 144                 {
 145                         irc::string compare = i->channel;
 146                         if (compare == channel)
 147                         {
 148                                 invites.erase(i);
 149                                 return;
 150                         }
 151                 }
 152         }
 153 }
 154
 155 bool userrec::HasPermission(std::string &command)
 156 {
 157         char TypeName[MAXBUF],Classes[MAXBUF],ClassName[MAXBUF],CommandList[MAXBUF];
 158         char* mycmd;
 159         char* savept;
 160         char* savept2;
 161
 162         // users on u-lined servers can completely bypass
 163         // all permissions based checks.
 164         //
 165         // of course, if this is sent to a remote server and this
 166         // server is not ulined there, then that other server
 167         // silently drops the command.
 168         if (is_uline(this->server))
 169                 return true;
 170
 171         // are they even an oper at all?
 172         if (strchr(this->modes,'o'))
 173         {
 174                 for (int j =0; j < Config->ConfValueEnum("type",&Config->config_f); j++)
 175                 {
 176                         Config->ConfValue("type","name",j,TypeName,&Config->config_f);
 177                         if (!strcmp(TypeName,this->oper))
 178                         {
 179                                 Config->ConfValue("type","classes",j,Classes,&Config->config_f);
 180                                 char* myclass = strtok_r(Classes," ",&savept);
 181                                 while (myclass)
 182                                 {
 183                                         for (int k =0; k < Config->ConfValueEnum("class",&Config->config_f); k++)
 184                                         {
 185                                                 Config->ConfValue("class","name",k,ClassName,&Config->config_f);
 186                                                 if (!strcmp(ClassName,myclass))
 187                                                 {
 188                                                         Config->ConfValue("class","commands",k,CommandList,&Config->config_f);
 189                                                         mycmd = strtok_r(CommandList," ",&savept2);
 190                                                         while (mycmd)
 191                                                         {
 192                                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 193                                                                 {
 194                                                                         return true;
 195                                                                 }
 196                                                                 mycmd = strtok_r(NULL," ",&savept2);
 197                                                         }
 198                                                 }
 199                                         }
 200                                         myclass = strtok_r(NULL," ",&savept);
 201                                 }
 202                         }
 203                 }
 204         }
 205         return false;
 206 }
 207
 208
 209 bool userrec::AddBuffer(std::string a)
 210 {
 211         std::string b = "";
 212         for (unsigned int i = 0; i < a.length(); i++)
 213                 if ((a[i] != '\r') && (a[i] != '\0') && (a[i] != 7))
 214                         b = b + a[i];
 215         std::stringstream stream(recvq);
 216         stream << b;
 217         recvq = stream.str();
 218         unsigned int i = 0;
 219         // count the size of the first line in the buffer.
 220         while (i < recvq.length())
 221         {
 222                 if (recvq[i++] == '\n')
 223                         break;
 224         }
 225         if (recvq.length() > (unsigned)this->recvqmax)
 226         {
 227                 this->SetWriteError("RecvQ exceeded");
 228                 WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 229         }
 230         // return false if we've had more than 600 characters WITHOUT
 231         // a carriage return (this is BAD, drop the socket)
 232         return (i < 600);
 233 }
 234
 235 bool userrec::BufferIsReady()
 236 {
 237         for (unsigned int i = 0; i < recvq.length(); i++)
 238                 if (recvq[i] == '\n')
 239                         return true;
 240         return false;
 241 }
 242
 243 void userrec::ClearBuffer()
 244 {
 245         recvq = "";
 246 }
 247
 248 std::string userrec::GetBuffer()
 249 {
 250         if (recvq == "")
 251                 return "";
 252         char* line = (char*)recvq.c_str();
 253         std::string ret = "";
 254         while ((*line != '\n') && (strlen(line)))
 255         {
 256                 ret = ret + *line;
 257                 line++;
 258         }
 259         if ((*line == '\n') || (*line == '\r'))
 260                 line++;
 261         recvq = line;
 262         return ret;
 263 }
 264
 265 void userrec::AddWriteBuf(std::string data)
 266 {
 267         if (this->GetWriteError() != "")
 268                 return;
 269         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 270         {
 271                 /* Fix by brain - Set the error text BEFORE calling writeopers, because
 272                  * if we dont it'll recursively  call here over and over again trying
 273                  * to repeatedly add the text to the sendq!
 274                  */
 275                 this->SetWriteError("SendQ exceeded");
 276                 WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 277                 return;
 278         }
 279         std::stringstream stream;
 280         stream << sendq << data;
 281         sendq = stream.str();
 282 }
 283
 284 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 285 void userrec::FlushWriteBuf()
 286 {
 287         if (sendq.length())
 288         {
 289                 char* tb = (char*)this->sendq.c_str();
 290                 int n_sent = write(this->fd,tb,this->sendq.length());
 291                 if (n_sent == -1)
 292                 {
 293                         this->SetWriteError(strerror(errno));
 294                 }
 295                 else
 296                 {
 297                         // advance the queue
 298                         tb += n_sent;
 299                         this->sendq = tb;
 300                         // update the user's stats counters
 301                         this->bytes_out += n_sent;
 302                         this->cmds_out++;
 303                 }
 304         }
 305 }
 306
 307 void userrec::SetWriteError(std::string error)
 308 {
 309         log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 310         // don't try to set the error twice, its already set take the first string.
 311         if (this->WriteError == "")
 312                 this->WriteError = error;
 313 }
 314
 315 std::string userrec::GetWriteError()
 316 {
 317         return this->WriteError;
 318 }
 319
 320 void AddOper(userrec* user)
 321 {
 322         log(DEBUG,"Oper added to optimization list");
 323         all_opers.push_back(user);
 324 }
 325
 326 void DeleteOper(userrec* user)
 327 {
 328         for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 329         {
 330                 if (*a == user)
 331                 {
 332                         log(DEBUG,"Oper removed from optimization list");
 333                         all_opers.erase(a);
 334                         return;
 335                 }
 336         }
 337 }
 338
 339 void kill_link(userrec *user,const char* r)
 340 {
 341         user_hash::iterator iter = clientlist.find(user->nick);
 342
 343         char reason[MAXBUF];
 344
 345         strncpy(reason,r,MAXBUF);
 346
 347         if (strlen(reason)>MAXQUIT)
 348         {
 349                 reason[MAXQUIT-1] = '\0';
 350         }
 351
 352         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
 353         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
 354         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
 355
 356         if (user->registered == 7) {
 357                 FOREACH_MOD(I_OnUserQuit,OnUserQuit(user,reason));
 358                 WriteCommonExcept(user,"QUIT :%s",reason);
 359         }
 360
 361         user->FlushWriteBuf();
 362
 363         FOREACH_MOD(I_OnUserDisconnect,OnUserDisconnect(user));
 364
 365         if (user->fd > -1)
 366         {
 367                 if (Config->GetIOHook(user->port))
 368                 {
 369                         Config->GetIOHook(user->port)->OnRawSocketClose(user->fd);
 370                 }
 371                 ServerInstance->SE->DelFd(user->fd);
 372                 user->CloseSocket();
 373         }
 374
 375         // this must come before the WriteOpers so that it doesnt try to fill their buffer with anything
 376         // if they were an oper with +s.
 377         if (user->registered == 7) {
 378                 purge_empty_chans(user);
 379                 // fix by brain: only show local quits because we only show local connects (it just makes SENSE)
 380                 if (user->fd > -1)
 381                         WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
 382                 AddWhoWas(user);
 383         }
 384
 385         if (iter != clientlist.end())
 386         {
 387                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
 388                 if (user->fd > -1)
 389                 {
 390                         fd_ref_table[user->fd] = NULL;
 391                         if (find(local_users.begin(),local_users.end(),user) != local_users.end())
 392                         {
 393                                 local_users.erase(find(local_users.begin(),local_users.end(),user));
 394                                 log(DEBUG,"Delete local user");
 395                         }
 396                 }
 397                 clientlist.erase(iter);
 398         }
 399         delete user;
 400 }
 401
 402 void kill_link_silent(userrec *user,const char* r)
 403 {
 404         user_hash::iterator iter = clientlist.find(user->nick);
 405
 406         char reason[MAXBUF];
 407
 408         strncpy(reason,r,MAXBUF);
 409
 410         if (strlen(reason)>MAXQUIT)
 411         {
 412                 reason[MAXQUIT-1] = '\0';
 413         }
 414
 415         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
 416         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
 417         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
 418
 419         user->FlushWriteBuf();
 420
 421         if (user->registered == 7) {
 422                 FOREACH_MOD(I_OnUserQuit,OnUserQuit(user,reason));
 423                 WriteCommonExcept(user,"QUIT :%s",reason);
 424         }
 425
 426         FOREACH_MOD(I_OnUserDisconnect,OnUserDisconnect(user));
 427
 428         if (user->fd > -1)
 429         {
 430                 if (Config->GetIOHook(user->port))
 431                 {
 432                         Config->GetIOHook(user->port)->OnRawSocketClose(user->fd);
 433                 }
 434                 ServerInstance->SE->DelFd(user->fd);
 435                 user->CloseSocket();
 436         }
 437
 438         if (user->registered == 7) {
 439                 purge_empty_chans(user);
 440         }
 441
 442         if (iter != clientlist.end())
 443         {
 444                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
 445                 if (user->fd > -1)
 446                 {
 447                         fd_ref_table[user->fd] = NULL;
 448                         if (find(local_users.begin(),local_users.end(),user) != local_users.end())
 449                         {
 450                                 log(DEBUG,"Delete local user");
 451                                 local_users.erase(find(local_users.begin(),local_users.end(),user));
 452                         }
 453                 }
 454                 clientlist.erase(iter);
 455         }
 456         delete user;
 457 }
 458
 459
 460 /* adds or updates an entry in the whowas list */
 461 void AddWhoWas(userrec* u)
 462 {
 463         whowas_hash::iterator iter = whowas.find(u->nick);
 464         WhoWasUser *a = new WhoWasUser();
 465         strlcpy(a->nick,u->nick,NICKMAX);
 466         strlcpy(a->ident,u->ident,IDENTMAX);
 467         strlcpy(a->dhost,u->dhost,160);
 468         strlcpy(a->host,u->host,160);
 469         strlcpy(a->fullname,u->fullname,MAXGECOS);
 470         strlcpy(a->server,u->server,256);
 471         a->signon = u->signon;
 472
 473         /* MAX_WHOWAS:   max number of /WHOWAS items
 474          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
 475          *               can be replaced by a newer one
 476          */
 477
 478         if (iter == whowas.end())
 479         {
 480                 if (whowas.size() >= (unsigned)WHOWAS_MAX)
 481                 {
 482                         for (whowas_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
 483                         {
 484                                 // 3600 seconds in an hour ;)
 485                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
 486                                 {
 487                                         // delete the old one
 488                                         if (i->second) delete i->second;
 489                                         // replace with new one
 490                                         i->second = a;
 491                                         log(DEBUG,"added WHOWAS entry, purged an old record");
 492                                         return;
 493                                 }
 494                         }
 495                         // no space left and user doesnt exist. Don't leave ram in use!
 496                         log(DEBUG,"Not able to update whowas (list at WHOWAS_MAX entries and trying to add new?), freeing excess ram");
 497                         delete a;
 498                 }
 499                 else
 500                 {
 501                         log(DEBUG,"added fresh WHOWAS entry");
 502                         whowas[a->nick] = a;
 503                 }
 504         }
 505         else
 506         {
 507                 log(DEBUG,"updated WHOWAS entry");
 508                 if (iter->second) delete iter->second;
 509                 iter->second = a;
 510         }
 511 }
 512
 513 /* add a client connection to the sockets list */
 514 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
 515 {
 516         string tempnick;
 517         char tn2[MAXBUF];
 518         user_hash::iterator iter;
 519
 520         tempnick = ConvToStr(socket) + "-unknown";
 521         sprintf(tn2,"%lu-unknown",(unsigned long)socket);
 522
 523         iter = clientlist.find(tempnick);
 524
 525         // fix by brain.
 526         // as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 527         // using one as a registered connection. As theyre per fd, we can also safely assume
 528         // that we wont have collisions. Therefore, if the nick exists in the list, its only
 529         // used by a dead socket, erase the iterator so that the new client may reclaim it.
 530         // this was probably the cause of 'server ignores me when i hammer it with reconnects'
 531         // issue in earlier alphas/betas
 532         if (iter != clientlist.end())
 533         {
 534                 userrec* goner = iter->second;
 535                 delete goner;
 536                 clientlist.erase(iter);
 537         }
 538
 539         /*
 540          * It is OK to access the value here this way since we know
 541          * it exists, we just created it above.
 542          *
 543          * At NO other time should you access a value in a map or a
 544          * hash_map this way.
 545          */
 546         clientlist[tempnick] = new userrec();
 547
 548         log(DEBUG,"AddClient: %lu %s %d %s",(unsigned long)socket,host,port,ip);
 549
 550         clientlist[tempnick]->fd = socket;
 551         strlcpy(clientlist[tempnick]->nick, tn2,NICKMAX);
 552         strlcpy(clientlist[tempnick]->host, host,160);
 553         strlcpy(clientlist[tempnick]->dhost, host,160);
 554         clientlist[tempnick]->server = (char*)FindServerNamePtr(Config->ServerName);
 555         strlcpy(clientlist[tempnick]->ident, "unknown",IDENTMAX);
 556         clientlist[tempnick]->registered = 0;
 557         clientlist[tempnick]->signon = TIME + Config->dns_timeout;
 558         clientlist[tempnick]->lastping = 1;
 559         clientlist[tempnick]->port = port;
 560         strlcpy(clientlist[tempnick]->ip,ip,16);
 561
 562         // set the registration timeout for this user
 563         unsigned long class_regtimeout = 90;
 564         int class_flood = 0;
 565         long class_threshold = 5;
 566         long class_sqmax = 262144;      // 256kb
 567         long class_rqmax = 4096;        // 4k
 568
 569         for (ClassVector::iterator i = Config->Classes.begin(); i != Config->Classes.end(); i++)
 570         {
 571                 if (match(clientlist[tempnick]->host,i->host.c_str()) && (i->type == CC_ALLOW))
 572                 {
 573                         class_regtimeout = (unsigned long)i->registration_timeout;
 574                         class_flood = i->flood;
 575                         clientlist[tempnick]->pingmax = i->pingtime;
 576                         class_threshold = i->threshold;
 577                         class_sqmax = i->sendqmax;
 578                         class_rqmax = i->recvqmax;
 579                         break;
 580                 }
 581         }
 582
 583         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax + Config->dns_timeout;
 584         clientlist[tempnick]->timeout = TIME+class_regtimeout;
 585         clientlist[tempnick]->flood = class_flood;
 586         clientlist[tempnick]->threshold = class_threshold;
 587         clientlist[tempnick]->sendqmax = class_sqmax;
 588         clientlist[tempnick]->recvqmax = class_rqmax;
 589
 590         ucrec a;
 591         a.channel = NULL;
 592         a.uc_modes = 0;
 593         for (int i = 0; i < MAXCHANS; i++)
 594                 clientlist[tempnick]->chans.push_back(a);
 595
 596         if (local_users.size() > Config->SoftLimit)
 597         {
 598                 kill_link(clientlist[tempnick],"No more connections allowed");
 599                 return;
 600         }
 601
 602         if (local_users.size() >= MAXCLIENTS)
 603         {
 604                 kill_link(clientlist[tempnick],"No more connections allowed");
 605                 return;
 606         }
 607
 608         // this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 609         // its a pretty big but for the moment valid assumption:
 610         // file descriptors are handed out starting at 0, and are recycled as theyre freed.
 611         // therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 612         // irc server at once (or the irc server otherwise initiating this many connections, files etc)
 613         // which for the time being is a physical impossibility (even the largest networks dont have more
 614         // than about 10,000 users on ONE server!)
 615         if ((unsigned)socket > MAX_DESCRIPTORS)
 616         {
 617                 kill_link(clientlist[tempnick],"Server is full");
 618                 return;
 619         }
 620         char* e = matches_exception(ip);
 621         if (!e)
 622         {
 623                 char* r = matches_zline(ip);
 624                 if (r)
 625                 {
 626                         char reason[MAXBUF];
 627                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
 628                         kill_link(clientlist[tempnick],reason);
 629                         return;
 630                 }
 631         }
 632         fd_ref_table[socket] = clientlist[tempnick];
 633         local_users.push_back(clientlist[tempnick]);
 634         ServerInstance->SE->AddFd(socket,true,X_ESTAB_CLIENT);
 635
 636         WriteServ(clientlist[tempnick]->fd,"NOTICE Auth :*** Looking up your hostname...");
 637 }
 638
 639 void FullConnectUser(userrec* user, CullList* Goners)
 640 {
 641         ServerInstance->stats->statsConnects++;
 642         user->idle_lastmsg = TIME;
 643         log(DEBUG,"ConnectUser: %s",user->nick);
 644
 645         ConnectClass* a = GetClass(user);
 646
 647         if (a->type == CC_DENY)
 648         {
 649                 Goners->AddItem(user,"Unauthorised connection");
 650                 return;
 651         }
 652         if ((*(a->pass.c_str())) && (!user->haspassed))
 653         {
 654                 Goners->AddItem(user,"Invalid password");
 655                 return;
 656         }
 657
 658         char match_against[MAXBUF];
 659         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
 660         char* e = matches_exception(match_against);
 661         if (!e)
 662         {
 663                 char* r = matches_gline(match_against);
 664                 if (r)
 665                 {
 666                         char reason[MAXBUF];
 667                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
 668                         Goners->AddItem(user,reason);
 669                         return;
 670                 }
 671                 r = matches_kline(user->host);
 672                 if (r)
 673                 {
 674                         char reason[MAXBUF];
 675                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
 676                         Goners->AddItem(user,reason);
 677                         return;
 678                 }
 679         }
 680
 681
 682         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Config->Network);
 683         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Config->Network,user->nick,user->ident,user->host);
 684         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,Config->ServerName,VERSION);
 685         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
 686         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,Config->ServerName,VERSION);
 687         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
 688         // so i'd better split it :)
 689         std::stringstream out(Config->data005);
 690         std::string token = "";
 691         std::string line5 = "";
 692         int token_counter = 0;
 693         while (!out.eof())
 694         {
 695                 out >> token;
 696                 line5 = line5 + token + " ";
 697                 token_counter++;
 698                 if ((token_counter >= 13) || (out.eof() == true))
 699                 {
 700                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
 701                         line5 = "";
 702                         token_counter = 0;
 703                 }
 704         }
 705         ShowMOTD(user);
 706
 707         // fix 3 by brain, move registered = 7 below these so that spurious modes and host changes dont go out
 708         // onto the network and produce 'fake direction'
 709         FOREACH_MOD(I_OnUserConnect,OnUserConnect(user));
 710         FOREACH_MOD(I_OnGlobalConnect,OnGlobalConnect(user));
 711         user->registered = 7;
 712         WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,user->ip);
 713 }
 714
 715 /* re-allocates a nick in the user_hash after they change nicknames,
 716  * returns a pointer to the new user as it may have moved */
 717
 718 userrec* ReHashNick(char* Old, char* New)
 719 {
 720         //user_hash::iterator newnick;
 721         user_hash::iterator oldnick = clientlist.find(Old);
 722
 723         log(DEBUG,"ReHashNick: %s %s",Old,New);
 724
 725         if (!strcasecmp(Old,New))
 726         {
 727                 log(DEBUG,"old nick is new nick, skipping");
 728                 return oldnick->second;
 729         }
 730
 731         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
 732
 733         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
 734
 735         userrec* olduser = oldnick->second;
 736         clientlist[New] = olduser;
 737         clientlist.erase(oldnick);
 738
 739         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
 740
 741         return clientlist[New];
 742 }
 743
 744 void force_nickchange(userrec* user,const char* newnick)
 745 {
 746         char nick[MAXBUF];
 747         int MOD_RESULT = 0;
 748
 749         *nick = 0;
 750
 751         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(user,newnick));
 752         if (MOD_RESULT) {
 753                 ServerInstance->stats->statsCollisions++;
 754                 kill_link(user,"Nickname collision");
 755                 return;
 756         }
 757         if (matches_qline(newnick))
 758         {
 759                 ServerInstance->stats->statsCollisions++;
 760                 kill_link(user,"Nickname collision");
 761                 return;
 762         }
 763
 764         if (user)
 765         {
 766                 if (newnick)
 767                 {
 768                         strncpy(nick,newnick,MAXBUF);
 769                 }
 770                 if (user->registered == 7)
 771                 {
 772                         char* pars[1];
 773                         pars[0] = nick;
 774                         std::string cmd = "NICK";
 775                         ServerInstance->Parser->CallHandler(cmd,pars,1,user);
 776                 }
 777         }
 778 }
 779