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