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                 /* Fix by brain - Set the error text BEFORE calling writeopers, because
 284                  * if we dont it'll recursively  call here over and over again trying
 285                  * to repeatedly add the text to the sendq!
 286                  */
 287                 this->SetWriteError("SendQ exceeded");
 288                 WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 289                 return;
 290         }
 291         std::stringstream stream;
 292         stream << sendq << data;
 293         sendq = stream.str();
 294 }
 295
 296 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 297 void userrec::FlushWriteBuf()
 298 {
 299         if (sendq.length())
 300         {
 301                 char* tb = (char*)this->sendq.c_str();
 302                 int n_sent = write(this->fd,tb,this->sendq.length());
 303                 if (n_sent == -1)
 304                 {
 305                         this->SetWriteError(strerror(errno));
 306                 }
 307                 else
 308                 {
 309                         // advance the queue
 310                         tb += n_sent;
 311                         this->sendq = tb;
 312                         // update the user's stats counters
 313                         this->bytes_out += n_sent;
 314                         this->cmds_out++;
 315                 }
 316         }
 317 }
 318
 319 void userrec::SetWriteError(std::string error)
 320 {
 321         log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 322         // don't try to set the error twice, its already set take the first string.
 323         if (this->WriteError == "")
 324                 this->WriteError = error;
 325 }
 326
 327 std::string userrec::GetWriteError()
 328 {
 329         return this->WriteError;
 330 }
 331
 332 void AddOper(userrec* user)
 333 {
 334         log(DEBUG,"Oper added to optimization list");
 335         all_opers.push_back(user);
 336 }
 337
 338 void DeleteOper(userrec* user)
 339 {
 340         for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 341         {
 342                 if (*a == user)
 343                 {
 344                         log(DEBUG,"Oper removed from optimization list");
 345                         all_opers.erase(a);
 346                         return;
 347                 }
 348         }
 349 }
 350
 351 void kill_link(userrec *user,const char* r)
 352 {
 353         user_hash::iterator iter = clientlist.find(user->nick);
 354
 355         char reason[MAXBUF];
 356
 357         strncpy(reason,r,MAXBUF);
 358
 359         if (strlen(reason)>MAXQUIT)
 360         {
 361                 reason[MAXQUIT-1] = '\0';
 362         }
 363
 364         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
 365         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
 366         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
 367
 368         if (user->registered == 7) {
 369                 FOREACH_MOD OnUserQuit(user,reason);
 370                 WriteCommonExcept(user,"QUIT :%s",reason);
 371         }
 372
 373         user->FlushWriteBuf();
 374
 375         FOREACH_MOD OnUserDisconnect(user);
 376
 377         if (user->fd > -1)
 378         {
 379                 if (IOHookModule)
 380                 {
 381                         IOHookModule->OnRawSocketClose(user->fd);
 382                 }
 383                 SE->DelFd(user->fd);
 384                 user->CloseSocket();
 385         }
 386
 387         // this must come before the WriteOpers so that it doesnt try to fill their buffer with anything
 388         // if they were an oper with +s.
 389         if (user->registered == 7) {
 390                 purge_empty_chans(user);
 391                 // fix by brain: only show local quits because we only show local connects (it just makes SENSE)
 392                 if (user->fd > -1)
 393                         WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
 394                 AddWhoWas(user);
 395         }
 396
 397         if (iter != clientlist.end())
 398         {
 399                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
 400                 if (user->fd > -1)
 401                 {
 402                         fd_ref_table[user->fd] = NULL;
 403                         if (find(local_users.begin(),local_users.end(),user) != local_users.end())
 404                         {
 405                                 local_users.erase(find(local_users.begin(),local_users.end(),user));
 406                                 log(DEBUG,"Delete local user");
 407                         }
 408                 }
 409                 clientlist.erase(iter);
 410         }
 411         delete user;
 412 }
 413
 414 void kill_link_silent(userrec *user,const char* r)
 415 {
 416         user_hash::iterator iter = clientlist.find(user->nick);
 417
 418         char reason[MAXBUF];
 419
 420         strncpy(reason,r,MAXBUF);
 421
 422         if (strlen(reason)>MAXQUIT)
 423         {
 424                 reason[MAXQUIT-1] = '\0';
 425         }
 426
 427         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
 428         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
 429         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
 430
 431         user->FlushWriteBuf();
 432
 433         if (user->registered == 7) {
 434                 FOREACH_MOD OnUserQuit(user,reason);
 435                 WriteCommonExcept(user,"QUIT :%s",reason);
 436         }
 437
 438         FOREACH_MOD OnUserDisconnect(user);
 439
 440         if (user->fd > -1)
 441         {
 442                 if (IOHookModule)
 443                 {
 444                         IOHookModule->OnRawSocketClose(user->fd);
 445                 }
 446                 SE->DelFd(user->fd);
 447                 user->CloseSocket();
 448         }
 449
 450         if (user->registered == 7) {
 451                 purge_empty_chans(user);
 452         }
 453
 454         if (iter != clientlist.end())
 455         {
 456                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
 457                 if (user->fd > -1)
 458                 {
 459                         fd_ref_table[user->fd] = NULL;
 460                         if (find(local_users.begin(),local_users.end(),user) != local_users.end())
 461                         {
 462                                 log(DEBUG,"Delete local user");
 463                                 local_users.erase(find(local_users.begin(),local_users.end(),user));
 464                         }
 465                 }
 466                 clientlist.erase(iter);
 467         }
 468         delete user;
 469 }
 470
 471
 472 /* adds or updates an entry in the whowas list */
 473 void AddWhoWas(userrec* u)
 474 {
 475         whowas_hash::iterator iter = whowas.find(u->nick);
 476         WhoWasUser *a = new WhoWasUser();
 477         strlcpy(a->nick,u->nick,NICKMAX);
 478         strlcpy(a->ident,u->ident,IDENTMAX);
 479         strlcpy(a->dhost,u->dhost,160);
 480         strlcpy(a->host,u->host,160);
 481         strlcpy(a->fullname,u->fullname,MAXGECOS);
 482         strlcpy(a->server,u->server,256);
 483         a->signon = u->signon;
 484
 485         /* MAX_WHOWAS:   max number of /WHOWAS items
 486          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
 487          *               can be replaced by a newer one
 488          */
 489
 490         if (iter == whowas.end())
 491         {
 492                 if (whowas.size() >= (unsigned)WHOWAS_MAX)
 493                 {
 494                         for (whowas_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
 495                         {
 496                                 // 3600 seconds in an hour ;)
 497                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
 498                                 {
 499                                         // delete the old one
 500                                         if (i->second) delete i->second;
 501                                         // replace with new one
 502                                         i->second = a;
 503                                         log(DEBUG,"added WHOWAS entry, purged an old record");
 504                                         return;
 505                                 }
 506                         }
 507                         // no space left and user doesnt exist. Don't leave ram in use!
 508                         log(DEBUG,"Not able to update whowas (list at WHOWAS_MAX entries and trying to add new?), freeing excess ram");
 509                         delete a;
 510                 }
 511                 else
 512                 {
 513                         log(DEBUG,"added fresh WHOWAS entry");
 514                         whowas[a->nick] = a;
 515                 }
 516         }
 517         else
 518         {
 519                 log(DEBUG,"updated WHOWAS entry");
 520                 if (iter->second) delete iter->second;
 521                 iter->second = a;
 522         }
 523 }
 524
 525 /* add a client connection to the sockets list */
 526 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
 527 {
 528         string tempnick;
 529         char tn2[MAXBUF];
 530         user_hash::iterator iter;
 531
 532         tempnick = ConvToStr(socket) + "-unknown";
 533         sprintf(tn2,"%lu-unknown",(unsigned long)socket);
 534
 535         iter = clientlist.find(tempnick);
 536
 537         // fix by brain.
 538         // as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 539         // using one as a registered connection. As theyre per fd, we can also safely assume
 540         // that we wont have collisions. Therefore, if the nick exists in the list, its only
 541         // used by a dead socket, erase the iterator so that the new client may reclaim it.
 542         // this was probably the cause of 'server ignores me when i hammer it with reconnects'
 543         // issue in earlier alphas/betas
 544         if (iter != clientlist.end())
 545         {
 546                 userrec* goner = iter->second;
 547                 delete goner;
 548                 clientlist.erase(iter);
 549         }
 550
 551         /*
 552          * It is OK to access the value here this way since we know
 553          * it exists, we just created it above.
 554          *
 555          * At NO other time should you access a value in a map or a
 556          * hash_map this way.
 557          */
 558         clientlist[tempnick] = new userrec();
 559
 560         NonBlocking(socket);
 561         log(DEBUG,"AddClient: %lu %s %d %s",(unsigned long)socket,host,port,ip);
 562
 563         clientlist[tempnick]->fd = socket;
 564         strlcpy(clientlist[tempnick]->nick, tn2,NICKMAX);
 565         strlcpy(clientlist[tempnick]->host, host,160);
 566         strlcpy(clientlist[tempnick]->dhost, host,160);
 567         clientlist[tempnick]->server = (char*)FindServerNamePtr(Config->ServerName);
 568         strlcpy(clientlist[tempnick]->ident, "unknown",IDENTMAX);
 569         clientlist[tempnick]->registered = 0;
 570         clientlist[tempnick]->signon = TIME + Config->dns_timeout;
 571         clientlist[tempnick]->lastping = 1;
 572         clientlist[tempnick]->port = port;
 573         strlcpy(clientlist[tempnick]->ip,ip,16);
 574
 575         // set the registration timeout for this user
 576         unsigned long class_regtimeout = 90;
 577         int class_flood = 0;
 578         long class_threshold = 5;
 579         long class_sqmax = 262144;      // 256kb
 580         long class_rqmax = 4096;        // 4k
 581
 582         for (ClassVector::iterator i = Config->Classes.begin(); i != Config->Classes.end(); i++)
 583         {
 584                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
 585                 {
 586                         class_regtimeout = (unsigned long)i->registration_timeout;
 587                         class_flood = i->flood;
 588                         clientlist[tempnick]->pingmax = i->pingtime;
 589                         class_threshold = i->threshold;
 590                         class_sqmax = i->sendqmax;
 591                         class_rqmax = i->recvqmax;
 592                         break;
 593                 }
 594         }
 595
 596         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax + Config->dns_timeout;
 597         clientlist[tempnick]->timeout = TIME+class_regtimeout;
 598         clientlist[tempnick]->flood = class_flood;
 599         clientlist[tempnick]->threshold = class_threshold;
 600         clientlist[tempnick]->sendqmax = class_sqmax;
 601         clientlist[tempnick]->recvqmax = class_rqmax;
 602
 603         ucrec a;
 604         a.channel = NULL;
 605         a.uc_modes = 0;
 606         for (int i = 0; i < MAXCHANS; i++)
 607                 clientlist[tempnick]->chans.push_back(a);
 608
 609         if (clientlist.size() > Config->SoftLimit)
 610         {
 611                 kill_link(clientlist[tempnick],"No more connections allowed");
 612                 return;
 613         }
 614
 615         if (clientlist.size() >= MAXCLIENTS)
 616         {
 617                 kill_link(clientlist[tempnick],"No more connections allowed");
 618                 return;
 619         }
 620
 621         // this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 622         // its a pretty big but for the moment valid assumption:
 623         // file descriptors are handed out starting at 0, and are recycled as theyre freed.
 624         // therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 625         // irc server at once (or the irc server otherwise initiating this many connections, files etc)
 626         // which for the time being is a physical impossibility (even the largest networks dont have more
 627         // than about 10,000 users on ONE server!)
 628         if ((unsigned)socket > 65534)
 629         {
 630                 kill_link(clientlist[tempnick],"Server is full");
 631                 return;
 632         }
 633         char* e = matches_exception(ip);
 634         if (!e)
 635         {
 636                 char* r = matches_zline(ip);
 637                 if (r)
 638                 {
 639                         char reason[MAXBUF];
 640                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
 641                         kill_link(clientlist[tempnick],reason);
 642                         return;
 643                 }
 644         }
 645         fd_ref_table[socket] = clientlist[tempnick];
 646         local_users.push_back(clientlist[tempnick]);
 647         SE->AddFd(socket,true,X_ESTAB_CLIENT);
 648 }
 649
 650 void FullConnectUser(userrec* user)
 651 {
 652         stats->statsConnects++;
 653         user->idle_lastmsg = TIME;
 654         log(DEBUG,"ConnectUser: %s",user->nick);
 655
 656         if ((strcmp(Passwd(user),"")) && (!user->haspassed))
 657         {
 658                 kill_link(user,"Invalid password");
 659                 return;
 660         }
 661         if (IsDenied(user))
 662         {
 663                 kill_link(user,"Unauthorised connection");
 664                 return;
 665         }
 666
 667         char match_against[MAXBUF];
 668         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
 669         char* e = matches_exception(match_against);
 670         if (!e)
 671         {
 672                 char* r = matches_gline(match_against);
 673                 if (r)
 674                 {
 675                         char reason[MAXBUF];
 676                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
 677                         kill_link_silent(user,reason);
 678                         return;
 679                 }
 680                 r = matches_kline(user->host);
 681                 if (r)
 682                 {
 683                         char reason[MAXBUF];
 684                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
 685                         kill_link_silent(user,reason);
 686                         return;
 687                 }
 688         }
 689
 690
 691         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Config->Network);
 692         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Config->Network,user->nick,user->ident,user->host);
 693         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,Config->ServerName,VERSION);
 694         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
 695         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,Config->ServerName,VERSION);
 696         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
 697         std::stringstream v;
 698         v << "WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
 699         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
 700         v << " TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=20 AWAYLEN=" << MAXAWAY << " CHANMODES=ohvb,k,l,psmnti NETWORK=";
 701         v << Config->Network;
 702         std::string data005 = v.str();
 703         FOREACH_MOD On005Numeric(data005);
 704         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
 705         // so i'd better split it :)
 706         std::stringstream out(data005);
 707         std::string token = "";
 708         std::string line5 = "";
 709         int token_counter = 0;
 710         while (!out.eof())
 711         {
 712                 out >> token;
 713                 line5 = line5 + token + " ";
 714                 token_counter++;
 715                 if ((token_counter >= 13) || (out.eof() == true))
 716                 {
 717                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
 718                         line5 = "";
 719                         token_counter = 0;
 720                 }
 721         }
 722         ShowMOTD(user);
 723
 724         // fix 3 by brain, move registered = 7 below these so that spurious modes and host changes dont go out
 725         // onto the network and produce 'fake direction'
 726         FOREACH_MOD OnUserConnect(user);
 727         FOREACH_MOD OnGlobalConnect(user);
 728         user->registered = 7;
 729         WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,user->ip);
 730 }
 731
 732
 733 /* shows the message of the day, and any other on-logon stuff */
 734 void ConnectUser(userrec *user)
 735 {
 736         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
 737         if ((user->dns_done) && (user->registered >= 3) && (AllModulesReportReady(user)))
 738         {
 739                 FullConnectUser(user);
 740         }
 741 }
 742
 743 /* re-allocates a nick in the user_hash after they change nicknames,
 744  * returns a pointer to the new user as it may have moved */
 745
 746 userrec* ReHashNick(char* Old, char* New)
 747 {
 748         //user_hash::iterator newnick;
 749         user_hash::iterator oldnick = clientlist.find(Old);
 750
 751         log(DEBUG,"ReHashNick: %s %s",Old,New);
 752
 753         if (!strcasecmp(Old,New))
 754         {
 755                 log(DEBUG,"old nick is new nick, skipping");
 756                 return oldnick->second;
 757         }
 758
 759         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
 760
 761         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
 762
 763         userrec* olduser = oldnick->second;
 764         clientlist[New] = olduser;
 765         clientlist.erase(oldnick);
 766
 767         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
 768
 769         return clientlist[New];
 770 }
 771
 772 void force_nickchange(userrec* user,const char* newnick)
 773 {
 774         char nick[MAXBUF];
 775         int MOD_RESULT = 0;
 776
 777         strcpy(nick,"");
 778
 779         FOREACH_RESULT(OnUserPreNick(user,newnick));
 780         if (MOD_RESULT) {
 781                 stats->statsCollisions++;
 782                 kill_link(user,"Nickname collision");
 783                 return;
 784         }
 785         if (matches_qline(newnick))
 786         {
 787                 stats->statsCollisions++;
 788                 kill_link(user,"Nickname collision");
 789                 return;
 790         }
 791
 792         if (user)
 793         {
 794                 if (newnick)
 795                 {
 796                         strncpy(nick,newnick,MAXBUF);
 797                 }
 798                 if (user->registered == 7)
 799                 {
 800                         char* pars[1];
 801                         pars[0] = nick;
 802                         handle_nick(pars,1,user);
 803                 }
 804         }
 805 }
 806