src/users.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 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
  39 extern InspIRCd* ServerInstance;
  40 extern int WHOWAS_STALE;
  41 extern int WHOWAS_MAX;
  42 extern std::vector<Module*> modules;
  43 extern std::vector<ircd_module*> factory;
  44 extern std::vector<InspSocket*> module_sockets;
  45 extern int MODCOUNT;
  46 extern InspSocket* socket_ref[65535];
  47 extern time_t TIME;
  48 extern userrec* fd_ref_table[65536];
  49 extern ServerConfig *Config;
  50 extern user_hash clientlist;
  51 extern whowas_hash whowas;
  52 std::vector<userrec*> local_users;
  53
  54 std::vector<userrec*> all_opers;
  55
  56 template<typename T> inline string ConvToStr(const T &in)
  57 {
  58         stringstream tmp;
  59         if (!(tmp << in)) return string();
  60         return tmp.str();
  61 }
  62
  63 userrec::userrec()
  64 {
  65         // the PROPER way to do it, AVOID bzero at *ALL* costs
  66         strcpy(nick,"");
  67         strcpy(ip,"127.0.0.1");
  68         timeout = 0;
  69         strcpy(ident,"");
  70         strcpy(host,"");
  71         strcpy(dhost,"");
  72         strcpy(fullname,"");
  73         strcpy(modes,"");
  74         server = (char*)FindServerNamePtr(Config->ServerName);
  75         strcpy(awaymsg,"");
  76         strcpy(oper,"");
  77         reset_due = TIME;
  78         lines_in = 0;
  79         fd = lastping = signon = idle_lastmsg = nping = registered = 0;
  80         flood = port = bytes_in = bytes_out = cmds_in = cmds_out = 0;
  81         haspassed = false;
  82         dns_done = false;
  83         recvq = "";
  84         sendq = "";
  85         chans.clear();
  86         invites.clear();
  87 }
  88
  89 userrec::~userrec()
  90 {
  91 }
  92
  93 void userrec::CloseSocket()
  94 {
  95         shutdown(this->fd,2);
  96         close(this->fd);
  97 }
  98
  99 char* userrec::GetFullHost()
 100 {
 101         static char result[MAXBUF];
 102         snprintf(result,MAXBUF,"%s!%s@%s",nick,ident,dhost);
 103         return result;
 104 }
 105
 106 int userrec::ReadData(void* buffer, size_t size)
 107 {
 108         if (this->fd > -1)
 109         {
 110                 return read(this->fd, buffer, size);
 111         }
 112         else return 0;
 113 }
 114
 115
 116 char* userrec::GetFullRealHost()
 117 {
 118         static char fresult[MAXBUF];
 119         snprintf(fresult,MAXBUF,"%s!%s@%s",nick,ident,host);
 120         return fresult;
 121 }
 122
 123 bool userrec::IsInvited(irc::string &channel)
 124 {
 125         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 126         {
 127                 irc::string compare = i->channel;
 128                 if (compare == channel)
 129                 {
 130                         return true;
 131                 }
 132         }
 133         return false;
 134 }
 135
 136 InvitedList* userrec::GetInviteList()
 137 {
 138         return &invites;
 139 }
 140
 141 void userrec::InviteTo(irc::string &channel)
 142 {
 143         Invited i;
 144         i.channel = channel;
 145         invites.push_back(i);
 146 }
 147
 148 void userrec::RemoveInvite(irc::string &channel)
 149 {
 150         log(DEBUG,"Removing invites");
 151         if (invites.size())
 152         {
 153                 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 154                 {
 155                         irc::string compare = i->channel;
 156                         if (compare == channel)
 157                         {
 158                                 invites.erase(i);
 159                                 return;
 160                         }
 161                 }
 162         }
 163 }
 164
 165 bool userrec::HasPermission(std::string &command)
 166 {
 167         char TypeName[MAXBUF],Classes[MAXBUF],ClassName[MAXBUF],CommandList[MAXBUF];
 168         char* mycmd;
 169         char* savept;
 170         char* savept2;
 171
 172         // users on u-lined servers can completely bypass
 173         // all permissions based checks.
 174         //
 175         // of course, if this is sent to a remote server and this
 176         // server is not ulined there, then that other server
 177         // silently drops the command.
 178         if (is_uline(this->server))
 179                 return true;
 180
 181         // are they even an oper at all?
 182         if (strchr(this->modes,'o'))
 183         {
 184                 for (int j =0; j < Config->ConfValueEnum("type",&Config->config_f); j++)
 185                 {
 186                         Config->ConfValue("type","name",j,TypeName,&Config->config_f);
 187                         if (!strcmp(TypeName,this->oper))
 188                         {
 189                                 Config->ConfValue("type","classes",j,Classes,&Config->config_f);
 190                                 char* myclass = strtok_r(Classes," ",&savept);
 191                                 while (myclass)
 192                                 {
 193                                         for (int k =0; k < Config->ConfValueEnum("class",&Config->config_f); k++)
 194                                         {
 195                                                 Config->ConfValue("class","name",k,ClassName,&Config->config_f);
 196                                                 if (!strcmp(ClassName,myclass))
 197                                                 {
 198                                                         Config->ConfValue("class","commands",k,CommandList,&Config->config_f);
 199                                                         mycmd = strtok_r(CommandList," ",&savept2);
 200                                                         while (mycmd)
 201                                                         {
 202                                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 203                                                                 {
 204                                                                         return true;
 205                                                                 }
 206                                                                 mycmd = strtok_r(NULL," ",&savept2);
 207                                                         }
 208                                                 }
 209                                         }
 210                                         myclass = strtok_r(NULL," ",&savept);
 211                                 }
 212                         }
 213                 }
 214         }
 215         return false;
 216 }
 217
 218
 219 bool userrec::AddBuffer(std::string a)
 220 {
 221         std::string b = "";
 222         for (unsigned int i = 0; i < a.length(); i++)
 223                 if ((a[i] != '\r') && (a[i] != '\0') && (a[i] != 7))
 224                         b = b + a[i];
 225         std::stringstream stream(recvq);
 226         stream << b;
 227         recvq = stream.str();
 228         unsigned int i = 0;
 229         // count the size of the first line in the buffer.
 230         while (i < recvq.length())
 231         {
 232                 if (recvq[i++] == '\n')
 233                         break;
 234         }
 235         if (recvq.length() > (unsigned)this->recvqmax)
 236         {
 237                 this->SetWriteError("RecvQ exceeded");
 238                 WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 239         }
 240         // return false if we've had more than 600 characters WITHOUT
 241         // a carriage return (this is BAD, drop the socket)
 242         return (i < 600);
 243 }
 244
 245 bool userrec::BufferIsReady()
 246 {
 247         for (unsigned int i = 0; i < recvq.length(); i++)
 248                 if (recvq[i] == '\n')
 249                         return true;
 250         return false;
 251 }
 252
 253 void userrec::ClearBuffer()
 254 {
 255         recvq = "";
 256 }
 257
 258 std::string userrec::GetBuffer()
 259 {
 260         if (recvq == "")
 261                 return "";
 262         char* line = (char*)recvq.c_str();
 263         std::string ret = "";
 264         while ((*line != '\n') && (strlen(line)))
 265         {
 266                 ret = ret + *line;
 267                 line++;
 268         }
 269         if ((*line == '\n') || (*line == '\r'))
 270                 line++;
 271         recvq = line;
 272         return ret;
 273 }
 274
 275 void userrec::AddWriteBuf(std::string data)
 276 {
 277         if (this->GetWriteError() != "")
 278                 return;
 279         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 280         {
 281                 /* Fix by brain - Set the error text BEFORE calling writeopers, because
 282                  * if we dont it'll recursively  call here over and over again trying
 283                  * to repeatedly add the text to the sendq!
 284                  */
 285                 this->SetWriteError("SendQ exceeded");
 286                 WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 287                 return;
 288         }
 289         std::stringstream stream;
 290         stream << sendq << data;
 291         sendq = stream.str();
 292 }
 293
 294 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 295 void userrec::FlushWriteBuf()
 296 {
 297         if (sendq.length())
 298         {
 299                 char* tb = (char*)this->sendq.c_str();
 300                 int n_sent = write(this->fd,tb,this->sendq.length());
 301                 if (n_sent == -1)
 302                 {
 303                         this->SetWriteError(strerror(errno));
 304                 }
 305                 else
 306                 {
 307                         // advance the queue
 308                         tb += n_sent;
 309                         this->sendq = tb;
 310                         // update the user's stats counters
 311                         this->bytes_out += n_sent;
 312                         this->cmds_out++;
 313                 }
 314         }
 315 }
 316
 317 void userrec::SetWriteError(std::string error)
 318 {
 319         log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 320         // don't try to set the error twice, its already set take the first string.
 321         if (this->WriteError == "")
 322                 this->WriteError = error;
 323 }
 324
 325 std::string userrec::GetWriteError()
 326 {
 327         return this->WriteError;
 328 }
 329
 330 void AddOper(userrec* user)
 331 {
 332         log(DEBUG,"Oper added to optimization list");
 333         all_opers.push_back(user);
 334 }
 335
 336 void DeleteOper(userrec* user)
 337 {
 338         for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 339         {
 340                 if (*a == user)
 341                 {
 342                         log(DEBUG,"Oper removed from optimization list");
 343                         all_opers.erase(a);
 344                         return;
 345                 }
 346         }
 347 }
 348
 349 void kill_link(userrec *user,const char* r)
 350 {
 351         user_hash::iterator iter = clientlist.find(user->nick);
 352
 353         char reason[MAXBUF];
 354
 355         strncpy(reason,r,MAXBUF);
 356
 357         if (strlen(reason)>MAXQUIT)
 358         {
 359                 reason[MAXQUIT-1] = '\0';
 360         }
 361
 362         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
 363         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
 364         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
 365
 366         if (user->registered == 7) {
 367                 FOREACH_MOD OnUserQuit(user,reason);
 368                 WriteCommonExcept(user,"QUIT :%s",reason);
 369         }
 370
 371         user->FlushWriteBuf();
 372
 373         FOREACH_MOD OnUserDisconnect(user);
 374
 375         if (user->fd > -1)
 376         {
 377                 if (Config->GetIOHook(user->port))
 378                 {
 379                         Config->GetIOHook(user->port)->OnRawSocketClose(user->fd);
 380                 }
 381                 ServerInstance->SE->DelFd(user->fd);
 382                 user->CloseSocket();
 383         }
 384
 385         // this must come before the WriteOpers so that it doesnt try to fill their buffer with anything
 386         // if they were an oper with +s.
 387         if (user->registered == 7) {
 388                 purge_empty_chans(user);
 389                 // fix by brain: only show local quits because we only show local connects (it just makes SENSE)
 390                 if (user->fd > -1)
 391                         WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
 392                 AddWhoWas(user);
 393         }
 394
 395         if (iter != clientlist.end())
 396         {
 397                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
 398                 if (user->fd > -1)
 399                 {
 400                         fd_ref_table[user->fd] = NULL;
 401                         if (find(local_users.begin(),local_users.end(),user) != local_users.end())
 402                         {
 403                                 local_users.erase(find(local_users.begin(),local_users.end(),user));
 404                                 log(DEBUG,"Delete local user");
 405                         }
 406                 }
 407                 clientlist.erase(iter);
 408         }
 409         delete user;
 410 }
 411
 412 void kill_link_silent(userrec *user,const char* r)
 413 {
 414         user_hash::iterator iter = clientlist.find(user->nick);
 415
 416         char reason[MAXBUF];
 417
 418         strncpy(reason,r,MAXBUF);
 419
 420         if (strlen(reason)>MAXQUIT)
 421         {
 422                 reason[MAXQUIT-1] = '\0';
 423         }
 424
 425         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
 426         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
 427         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
 428
 429         user->FlushWriteBuf();
 430
 431         if (user->registered == 7) {
 432                 FOREACH_MOD OnUserQuit(user,reason);
 433                 WriteCommonExcept(user,"QUIT :%s",reason);
 434         }
 435
 436         FOREACH_MOD OnUserDisconnect(user);
 437
 438         if (user->fd > -1)
 439         {
 440                 if (Config->GetIOHook(user->port))
 441                 {
 442                         Config->GetIOHook(user->port)->OnRawSocketClose(user->fd);
 443                 }
 444                 ServerInstance->SE->DelFd(user->fd);
 445                 user->CloseSocket();
 446         }
 447
 448         if (user->registered == 7) {
 449                 purge_empty_chans(user);
 450         }
 451
 452         if (iter != clientlist.end())
 453         {
 454                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
 455                 if (user->fd > -1)
 456                 {
 457                         fd_ref_table[user->fd] = NULL;
 458                         if (find(local_users.begin(),local_users.end(),user) != local_users.end())
 459                         {
 460                                 log(DEBUG,"Delete local user");
 461                                 local_users.erase(find(local_users.begin(),local_users.end(),user));
 462                         }
 463                 }
 464                 clientlist.erase(iter);
 465         }
 466         delete user;
 467 }
 468
 469
 470 /* adds or updates an entry in the whowas list */
 471 void AddWhoWas(userrec* u)
 472 {
 473         whowas_hash::iterator iter = whowas.find(u->nick);
 474         WhoWasUser *a = new WhoWasUser();
 475         strlcpy(a->nick,u->nick,NICKMAX);
 476         strlcpy(a->ident,u->ident,IDENTMAX);
 477         strlcpy(a->dhost,u->dhost,160);
 478         strlcpy(a->host,u->host,160);
 479         strlcpy(a->fullname,u->fullname,MAXGECOS);
 480         strlcpy(a->server,u->server,256);
 481         a->signon = u->signon;
 482
 483         /* MAX_WHOWAS:   max number of /WHOWAS items
 484          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
 485          *               can be replaced by a newer one
 486          */
 487
 488         if (iter == whowas.end())
 489         {
 490                 if (whowas.size() >= (unsigned)WHOWAS_MAX)
 491                 {
 492                         for (whowas_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
 493                         {
 494                                 // 3600 seconds in an hour ;)
 495                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
 496                                 {
 497                                         // delete the old one
 498                                         if (i->second) delete i->second;
 499                                         // replace with new one
 500                                         i->second = a;
 501                                         log(DEBUG,"added WHOWAS entry, purged an old record");
 502                                         return;
 503                                 }
 504                         }
 505                         // no space left and user doesnt exist. Don't leave ram in use!
 506                         log(DEBUG,"Not able to update whowas (list at WHOWAS_MAX entries and trying to add new?), freeing excess ram");
 507                         delete a;
 508                 }
 509                 else
 510                 {
 511                         log(DEBUG,"added fresh WHOWAS entry");
 512                         whowas[a->nick] = a;
 513                 }
 514         }
 515         else
 516         {
 517                 log(DEBUG,"updated WHOWAS entry");
 518                 if (iter->second) delete iter->second;
 519                 iter->second = a;
 520         }
 521 }
 522
 523 /* add a client connection to the sockets list */
 524 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
 525 {
 526         string tempnick;
 527         char tn2[MAXBUF];
 528         user_hash::iterator iter;
 529
 530         tempnick = ConvToStr(socket) + "-unknown";
 531         sprintf(tn2,"%lu-unknown",(unsigned long)socket);
 532
 533         iter = clientlist.find(tempnick);
 534
 535         // fix by brain.
 536         // as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 537         // using one as a registered connection. As theyre per fd, we can also safely assume
 538         // that we wont have collisions. Therefore, if the nick exists in the list, its only
 539         // used by a dead socket, erase the iterator so that the new client may reclaim it.
 540         // this was probably the cause of 'server ignores me when i hammer it with reconnects'
 541         // issue in earlier alphas/betas
 542         if (iter != clientlist.end())
 543         {
 544                 userrec* goner = iter->second;
 545                 delete goner;
 546                 clientlist.erase(iter);
 547         }
 548
 549         /*
 550          * It is OK to access the value here this way since we know
 551          * it exists, we just created it above.
 552          *
 553          * At NO other time should you access a value in a map or a
 554          * hash_map this way.
 555          */
 556         clientlist[tempnick] = new userrec();
 557
 558         log(DEBUG,"AddClient: %lu %s %d %s",(unsigned long)socket,host,port,ip);
 559
 560         clientlist[tempnick]->fd = socket;
 561         strlcpy(clientlist[tempnick]->nick, tn2,NICKMAX);
 562         strlcpy(clientlist[tempnick]->host, host,160);
 563         strlcpy(clientlist[tempnick]->dhost, host,160);
 564         clientlist[tempnick]->server = (char*)FindServerNamePtr(Config->ServerName);
 565         strlcpy(clientlist[tempnick]->ident, "unknown",IDENTMAX);
 566         clientlist[tempnick]->registered = 0;
 567         clientlist[tempnick]->signon = TIME + Config->dns_timeout;
 568         clientlist[tempnick]->lastping = 1;
 569         clientlist[tempnick]->port = port;
 570         strlcpy(clientlist[tempnick]->ip,ip,16);
 571
 572         // set the registration timeout for this user
 573         unsigned long class_regtimeout = 90;
 574         int class_flood = 0;
 575         long class_threshold = 5;
 576         long class_sqmax = 262144;      // 256kb
 577         long class_rqmax = 4096;        // 4k
 578
 579         for (ClassVector::iterator i = Config->Classes.begin(); i != Config->Classes.end(); i++)
 580         {
 581                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
 582                 {
 583                         class_regtimeout = (unsigned long)i->registration_timeout;
 584                         class_flood = i->flood;
 585                         clientlist[tempnick]->pingmax = i->pingtime;
 586                         class_threshold = i->threshold;
 587                         class_sqmax = i->sendqmax;
 588                         class_rqmax = i->recvqmax;
 589                         break;
 590                 }
 591         }
 592
 593         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax + Config->dns_timeout;
 594         clientlist[tempnick]->timeout = TIME+class_regtimeout;
 595         clientlist[tempnick]->flood = class_flood;
 596         clientlist[tempnick]->threshold = class_threshold;
 597         clientlist[tempnick]->sendqmax = class_sqmax;
 598         clientlist[tempnick]->recvqmax = class_rqmax;
 599
 600         ucrec a;
 601         a.channel = NULL;
 602         a.uc_modes = 0;
 603         for (int i = 0; i < MAXCHANS; i++)
 604                 clientlist[tempnick]->chans.push_back(a);
 605
 606         if (clientlist.size() > Config->SoftLimit)
 607         {
 608                 kill_link(clientlist[tempnick],"No more connections allowed");
 609                 return;
 610         }
 611
 612         if (clientlist.size() >= MAXCLIENTS)
 613         {
 614                 kill_link(clientlist[tempnick],"No more connections allowed");
 615                 return;
 616         }
 617
 618         // this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 619         // its a pretty big but for the moment valid assumption:
 620         // file descriptors are handed out starting at 0, and are recycled as theyre freed.
 621         // therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 622         // irc server at once (or the irc server otherwise initiating this many connections, files etc)
 623         // which for the time being is a physical impossibility (even the largest networks dont have more
 624         // than about 10,000 users on ONE server!)
 625         if ((unsigned)socket > 65534)
 626         {
 627                 kill_link(clientlist[tempnick],"Server is full");
 628                 return;
 629         }
 630         char* e = matches_exception(ip);
 631         if (!e)
 632         {
 633                 char* r = matches_zline(ip);
 634                 if (r)
 635                 {
 636                         char reason[MAXBUF];
 637                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
 638                         kill_link(clientlist[tempnick],reason);
 639                         return;
 640                 }
 641         }
 642         fd_ref_table[socket] = clientlist[tempnick];
 643         local_users.push_back(clientlist[tempnick]);
 644         ServerInstance->SE->AddFd(socket,true,X_ESTAB_CLIENT);
 645 }
 646
 647 void FullConnectUser(userrec* user)
 648 {
 649         ServerInstance->stats->statsConnects++;
 650         user->idle_lastmsg = TIME;
 651         log(DEBUG,"ConnectUser: %s",user->nick);
 652
 653         if ((strcmp(Passwd(user),"")) && (!user->haspassed))
 654         {
 655                 kill_link(user,"Invalid password");
 656                 return;
 657         }
 658         if (IsDenied(user))
 659         {
 660                 kill_link(user,"Unauthorised connection");
 661                 return;
 662         }
 663
 664         char match_against[MAXBUF];
 665         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
 666         char* e = matches_exception(match_against);
 667         if (!e)
 668         {
 669                 char* r = matches_gline(match_against);
 670                 if (r)
 671                 {
 672                         char reason[MAXBUF];
 673                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
 674                         kill_link_silent(user,reason);
 675                         return;
 676                 }
 677                 r = matches_kline(user->host);
 678                 if (r)
 679                 {
 680                         char reason[MAXBUF];
 681                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
 682                         kill_link_silent(user,reason);
 683                         return;
 684                 }
 685         }
 686
 687
 688         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Config->Network);
 689         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Config->Network,user->nick,user->ident,user->host);
 690         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,Config->ServerName,VERSION);
 691         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
 692         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,Config->ServerName,VERSION);
 693         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
 694         std::stringstream v;
 695         v << "WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
 696         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
 697         v << " TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=20 AWAYLEN=" << MAXAWAY << " CHANMODES=ohvb,k,l,psmnti NETWORK=";
 698         v << Config->Network;
 699         std::string data005 = v.str();
 700         FOREACH_MOD On005Numeric(data005);
 701         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
 702         // so i'd better split it :)
 703         std::stringstream out(data005);
 704         std::string token = "";
 705         std::string line5 = "";
 706         int token_counter = 0;
 707         while (!out.eof())
 708         {
 709                 out >> token;
 710                 line5 = line5 + token + " ";
 711                 token_counter++;
 712                 if ((token_counter >= 13) || (out.eof() == true))
 713                 {
 714                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
 715                         line5 = "";
 716                         token_counter = 0;
 717                 }
 718         }
 719         ShowMOTD(user);
 720
 721         // fix 3 by brain, move registered = 7 below these so that spurious modes and host changes dont go out
 722         // onto the network and produce 'fake direction'
 723         FOREACH_MOD OnUserConnect(user);
 724         FOREACH_MOD OnGlobalConnect(user);
 725         user->registered = 7;
 726         WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,user->ip);
 727 }
 728
 729
 730 /* shows the message of the day, and any other on-logon stuff */
 731 void ConnectUser(userrec *user)
 732 {
 733         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
 734         if ((user->dns_done) && (user->registered >= 3) && (AllModulesReportReady(user)))
 735         {
 736                 FullConnectUser(user);
 737         }
 738 }
 739
 740 /* re-allocates a nick in the user_hash after they change nicknames,
 741  * returns a pointer to the new user as it may have moved */
 742
 743 userrec* ReHashNick(char* Old, char* New)
 744 {
 745         //user_hash::iterator newnick;
 746         user_hash::iterator oldnick = clientlist.find(Old);
 747
 748         log(DEBUG,"ReHashNick: %s %s",Old,New);
 749
 750         if (!strcasecmp(Old,New))
 751         {
 752                 log(DEBUG,"old nick is new nick, skipping");
 753                 return oldnick->second;
 754         }
 755
 756         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
 757
 758         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
 759
 760         userrec* olduser = oldnick->second;
 761         clientlist[New] = olduser;
 762         clientlist.erase(oldnick);
 763
 764         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
 765
 766         return clientlist[New];
 767 }
 768
 769 void force_nickchange(userrec* user,const char* newnick)
 770 {
 771         char nick[MAXBUF];
 772         int MOD_RESULT = 0;
 773
 774         strcpy(nick,"");
 775
 776         FOREACH_RESULT(OnUserPreNick(user,newnick));
 777         if (MOD_RESULT) {
 778                 ServerInstance->stats->statsCollisions++;
 779                 kill_link(user,"Nickname collision");
 780                 return;
 781         }
 782         if (matches_qline(newnick))
 783         {
 784                 ServerInstance->stats->statsCollisions++;
 785                 kill_link(user,"Nickname collision");
 786                 return;
 787         }
 788
 789         if (user)
 790         {
 791                 if (newnick)
 792                 {
 793                         strncpy(nick,newnick,MAXBUF);
 794                 }
 795                 if (user->registered == 7)
 796                 {
 797                         char* pars[1];
 798                         pars[0] = nick;
 799                         std::string cmd = "NICK";
 800                         ServerInstance->Parser->CallHandler(cmd,pars,1,user);
 801                 }
 802         }
 803 }
 804