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 extern Module* IOHookModule;
  53 std::vector<userrec*> local_users;
  54
  55 std::vector<userrec*> all_opers;
  56
  57 template<typename T> inline string ConvToStr(const T &in)
  58 {
  59         stringstream tmp;
  60         if (!(tmp << in)) return string();
  61         return tmp.str();
  62 }
  63
  64 userrec::userrec()
  65 {
  66         // the PROPER way to do it, AVOID bzero at *ALL* costs
  67         strcpy(nick,"");
  68         strcpy(ip,"127.0.0.1");
  69         timeout = 0;
  70         strcpy(ident,"");
  71         strcpy(host,"");
  72         strcpy(dhost,"");
  73         strcpy(fullname,"");
  74         strcpy(modes,"");
  75         server = (char*)FindServerNamePtr(Config->ServerName);
  76         strcpy(awaymsg,"");
  77         strcpy(oper,"");
  78         reset_due = TIME;
  79         lines_in = 0;
  80         fd = lastping = signon = idle_lastmsg = nping = registered = 0;
  81         flood = port = bytes_in = bytes_out = cmds_in = cmds_out = 0;
  82         haspassed = false;
  83         dns_done = false;
  84         recvq = "";
  85         sendq = "";
  86         chans.clear();
  87         invites.clear();
  88 }
  89
  90 userrec::~userrec()
  91 {
  92 }
  93
  94 void userrec::CloseSocket()
  95 {
  96         shutdown(this->fd,2);
  97         close(this->fd);
  98 }
  99
 100 char* userrec::GetFullHost()
 101 {
 102         static char result[MAXBUF];
 103         snprintf(result,MAXBUF,"%s!%s@%s",nick,ident,dhost);
 104         return result;
 105 }
 106
 107 int userrec::ReadData(void* buffer, size_t size)
 108 {
 109         if (this->fd > -1)
 110         {
 111                 return read(this->fd, buffer, size);
 112         }
 113         else return 0;
 114 }
 115
 116
 117 char* userrec::GetFullRealHost()
 118 {
 119         static char fresult[MAXBUF];
 120         snprintf(fresult,MAXBUF,"%s!%s@%s",nick,ident,host);
 121         return fresult;
 122 }
 123
 124 bool userrec::IsInvited(irc::string &channel)
 125 {
 126         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 127         {
 128                 irc::string compare = i->channel;
 129                 if (compare == channel)
 130                 {
 131                         return true;
 132                 }
 133         }
 134         return false;
 135 }
 136
 137 InvitedList* userrec::GetInviteList()
 138 {
 139         return &invites;
 140 }
 141
 142 void userrec::InviteTo(irc::string &channel)
 143 {
 144         Invited i;
 145         i.channel = channel;
 146         invites.push_back(i);
 147 }
 148
 149 void userrec::RemoveInvite(irc::string &channel)
 150 {
 151         log(DEBUG,"Removing invites");
 152         if (invites.size())
 153         {
 154                 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 155                 {
 156                         irc::string compare = i->channel;
 157                         if (compare == channel)
 158                         {
 159                                 invites.erase(i);
 160                                 return;
 161                         }
 162                 }
 163         }
 164 }
 165
 166 bool userrec::HasPermission(std::string &command)
 167 {
 168         char TypeName[MAXBUF],Classes[MAXBUF],ClassName[MAXBUF],CommandList[MAXBUF];
 169         char* mycmd;
 170         char* savept;
 171         char* savept2;
 172
 173         // users on u-lined servers can completely bypass
 174         // all permissions based checks.
 175         //
 176         // of course, if this is sent to a remote server and this
 177         // server is not ulined there, then that other server
 178         // silently drops the command.
 179         if (is_uline(this->server))
 180                 return true;
 181
 182         // are they even an oper at all?
 183         if (strchr(this->modes,'o'))
 184         {
 185                 for (int j =0; j < Config->ConfValueEnum("type",&Config->config_f); j++)
 186                 {
 187                         Config->ConfValue("type","name",j,TypeName,&Config->config_f);
 188                         if (!strcmp(TypeName,this->oper))
 189                         {
 190                                 Config->ConfValue("type","classes",j,Classes,&Config->config_f);
 191                                 char* myclass = strtok_r(Classes," ",&savept);
 192                                 while (myclass)
 193                                 {
 194                                         for (int k =0; k < Config->ConfValueEnum("class",&Config->config_f); k++)
 195                                         {
 196                                                 Config->ConfValue("class","name",k,ClassName,&Config->config_f);
 197                                                 if (!strcmp(ClassName,myclass))
 198                                                 {
 199                                                         Config->ConfValue("class","commands",k,CommandList,&Config->config_f);
 200                                                         mycmd = strtok_r(CommandList," ",&savept2);
 201                                                         while (mycmd)
 202                                                         {
 203                                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 204                                                                 {
 205                                                                         return true;
 206                                                                 }
 207                                                                 mycmd = strtok_r(NULL," ",&savept2);
 208                                                         }
 209                                                 }
 210                                         }
 211                                         myclass = strtok_r(NULL," ",&savept);
 212                                 }
 213                         }
 214                 }
 215         }
 216         return false;
 217 }
 218
 219
 220 bool userrec::AddBuffer(std::string a)
 221 {
 222         std::string b = "";
 223         for (unsigned int i = 0; i < a.length(); i++)
 224                 if ((a[i] != '\r') && (a[i] != '\0') && (a[i] != 7))
 225                         b = b + a[i];
 226         std::stringstream stream(recvq);
 227         stream << b;
 228         recvq = stream.str();
 229         unsigned int i = 0;
 230         // count the size of the first line in the buffer.
 231         while (i < recvq.length())
 232         {
 233                 if (recvq[i++] == '\n')
 234                         break;
 235         }
 236         if (recvq.length() > (unsigned)this->recvqmax)
 237         {
 238                 this->SetWriteError("RecvQ exceeded");
 239                 WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 240         }
 241         // return false if we've had more than 600 characters WITHOUT
 242         // a carriage return (this is BAD, drop the socket)
 243         return (i < 600);
 244 }
 245
 246 bool userrec::BufferIsReady()
 247 {
 248         for (unsigned int i = 0; i < recvq.length(); i++)
 249                 if (recvq[i] == '\n')
 250                         return true;
 251         return false;
 252 }
 253
 254 void userrec::ClearBuffer()
 255 {
 256         recvq = "";
 257 }
 258
 259 std::string userrec::GetBuffer()
 260 {
 261         if (recvq == "")
 262                 return "";
 263         char* line = (char*)recvq.c_str();
 264         std::string ret = "";
 265         while ((*line != '\n') && (strlen(line)))
 266         {
 267                 ret = ret + *line;
 268                 line++;
 269         }
 270         if ((*line == '\n') || (*line == '\r'))
 271                 line++;
 272         recvq = line;
 273         return ret;
 274 }
 275
 276 void userrec::AddWriteBuf(std::string data)
 277 {
 278         if (this->GetWriteError() != "")
 279                 return;
 280         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 281         {
 282                 /* Fix by brain - Set the error text BEFORE calling writeopers, because
 283                  * if we dont it'll recursively  call here over and over again trying
 284                  * to repeatedly add the text to the sendq!
 285                  */
 286                 this->SetWriteError("SendQ exceeded");
 287                 WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 288                 return;
 289         }
 290         std::stringstream stream;
 291         stream << sendq << data;
 292         sendq = stream.str();
 293 }
 294
 295 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 296 void userrec::FlushWriteBuf()
 297 {
 298         if (sendq.length())
 299         {
 300                 char* tb = (char*)this->sendq.c_str();
 301                 int n_sent = write(this->fd,tb,this->sendq.length());
 302                 if (n_sent == -1)
 303                 {
 304                         this->SetWriteError(strerror(errno));
 305                 }
 306                 else
 307                 {
 308                         // advance the queue
 309                         tb += n_sent;
 310                         this->sendq = tb;
 311                         // update the user's stats counters
 312                         this->bytes_out += n_sent;
 313                         this->cmds_out++;
 314                 }
 315         }
 316 }
 317
 318 void userrec::SetWriteError(std::string error)
 319 {
 320         log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 321         // don't try to set the error twice, its already set take the first string.
 322         if (this->WriteError == "")
 323                 this->WriteError = error;
 324 }
 325
 326 std::string userrec::GetWriteError()
 327 {
 328         return this->WriteError;
 329 }
 330
 331 void AddOper(userrec* user)
 332 {
 333         log(DEBUG,"Oper added to optimization list");
 334         all_opers.push_back(user);
 335 }
 336
 337 void DeleteOper(userrec* user)
 338 {
 339         for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 340         {
 341                 if (*a == user)
 342                 {
 343                         log(DEBUG,"Oper removed from optimization list");
 344                         all_opers.erase(a);
 345                         return;
 346                 }
 347         }
 348 }
 349
 350 void kill_link(userrec *user,const char* r)
 351 {
 352         user_hash::iterator iter = clientlist.find(user->nick);
 353
 354         char reason[MAXBUF];
 355
 356         strncpy(reason,r,MAXBUF);
 357
 358         if (strlen(reason)>MAXQUIT)
 359         {
 360                 reason[MAXQUIT-1] = '\0';
 361         }
 362
 363         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
 364         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
 365         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
 366
 367         if (user->registered == 7) {
 368                 FOREACH_MOD OnUserQuit(user,reason);
 369                 WriteCommonExcept(user,"QUIT :%s",reason);
 370         }
 371
 372         user->FlushWriteBuf();
 373
 374         FOREACH_MOD OnUserDisconnect(user);
 375
 376         if (user->fd > -1)
 377         {
 378                 if (IOHookModule)
 379                 {
 380                         IOHookModule->OnRawSocketClose(user->fd);
 381                 }
 382                 ServerInstance->SE->DelFd(user->fd);
 383                 user->CloseSocket();
 384         }
 385
 386         // this must come before the WriteOpers so that it doesnt try to fill their buffer with anything
 387         // if they were an oper with +s.
 388         if (user->registered == 7) {
 389                 purge_empty_chans(user);
 390                 // fix by brain: only show local quits because we only show local connects (it just makes SENSE)
 391                 if (user->fd > -1)
 392                         WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
 393                 AddWhoWas(user);
 394         }
 395
 396         if (iter != clientlist.end())
 397         {
 398                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
 399                 if (user->fd > -1)
 400                 {
 401                         fd_ref_table[user->fd] = NULL;
 402                         if (find(local_users.begin(),local_users.end(),user) != local_users.end())
 403                         {
 404                                 local_users.erase(find(local_users.begin(),local_users.end(),user));
 405                                 log(DEBUG,"Delete local user");
 406                         }
 407                 }
 408                 clientlist.erase(iter);
 409         }
 410         delete user;
 411 }
 412
 413 void kill_link_silent(userrec *user,const char* r)
 414 {
 415         user_hash::iterator iter = clientlist.find(user->nick);
 416
 417         char reason[MAXBUF];
 418
 419         strncpy(reason,r,MAXBUF);
 420
 421         if (strlen(reason)>MAXQUIT)
 422         {
 423                 reason[MAXQUIT-1] = '\0';
 424         }
 425
 426         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
 427         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
 428         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
 429
 430         user->FlushWriteBuf();
 431
 432         if (user->registered == 7) {
 433                 FOREACH_MOD OnUserQuit(user,reason);
 434                 WriteCommonExcept(user,"QUIT :%s",reason);
 435         }
 436
 437         FOREACH_MOD OnUserDisconnect(user);
 438
 439         if (user->fd > -1)
 440         {
 441                 if (IOHookModule)
 442                 {
 443                         IOHookModule->OnRawSocketClose(user->fd);
 444                 }
 445                 ServerInstance->SE->DelFd(user->fd);
 446                 user->CloseSocket();
 447         }
 448
 449         if (user->registered == 7) {
 450                 purge_empty_chans(user);
 451         }
 452
 453         if (iter != clientlist.end())
 454         {
 455                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
 456                 if (user->fd > -1)
 457                 {
 458                         fd_ref_table[user->fd] = NULL;
 459                         if (find(local_users.begin(),local_users.end(),user) != local_users.end())
 460                         {
 461                                 log(DEBUG,"Delete local user");
 462                                 local_users.erase(find(local_users.begin(),local_users.end(),user));
 463                         }
 464                 }
 465                 clientlist.erase(iter);
 466         }
 467         delete user;
 468 }
 469
 470
 471 /* adds or updates an entry in the whowas list */
 472 void AddWhoWas(userrec* u)
 473 {
 474         whowas_hash::iterator iter = whowas.find(u->nick);
 475         WhoWasUser *a = new WhoWasUser();
 476         strlcpy(a->nick,u->nick,NICKMAX);
 477         strlcpy(a->ident,u->ident,IDENTMAX);
 478         strlcpy(a->dhost,u->dhost,160);
 479         strlcpy(a->host,u->host,160);
 480         strlcpy(a->fullname,u->fullname,MAXGECOS);
 481         strlcpy(a->server,u->server,256);
 482         a->signon = u->signon;
 483
 484         /* MAX_WHOWAS:   max number of /WHOWAS items
 485          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
 486          *               can be replaced by a newer one
 487          */
 488
 489         if (iter == whowas.end())
 490         {
 491                 if (whowas.size() >= (unsigned)WHOWAS_MAX)
 492                 {
 493                         for (whowas_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
 494                         {
 495                                 // 3600 seconds in an hour ;)
 496                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
 497                                 {
 498                                         // delete the old one
 499                                         if (i->second) delete i->second;
 500                                         // replace with new one
 501                                         i->second = a;
 502                                         log(DEBUG,"added WHOWAS entry, purged an old record");
 503                                         return;
 504                                 }
 505                         }
 506                         // no space left and user doesnt exist. Don't leave ram in use!
 507                         log(DEBUG,"Not able to update whowas (list at WHOWAS_MAX entries and trying to add new?), freeing excess ram");
 508                         delete a;
 509                 }
 510                 else
 511                 {
 512                         log(DEBUG,"added fresh WHOWAS entry");
 513                         whowas[a->nick] = a;
 514                 }
 515         }
 516         else
 517         {
 518                 log(DEBUG,"updated WHOWAS entry");
 519                 if (iter->second) delete iter->second;
 520                 iter->second = a;
 521         }
 522 }
 523
 524 /* add a client connection to the sockets list */
 525 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
 526 {
 527         string tempnick;
 528         char tn2[MAXBUF];
 529         user_hash::iterator iter;
 530
 531         tempnick = ConvToStr(socket) + "-unknown";
 532         sprintf(tn2,"%lu-unknown",(unsigned long)socket);
 533
 534         iter = clientlist.find(tempnick);
 535
 536         // fix by brain.
 537         // as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 538         // using one as a registered connection. As theyre per fd, we can also safely assume
 539         // that we wont have collisions. Therefore, if the nick exists in the list, its only
 540         // used by a dead socket, erase the iterator so that the new client may reclaim it.
 541         // this was probably the cause of 'server ignores me when i hammer it with reconnects'
 542         // issue in earlier alphas/betas
 543         if (iter != clientlist.end())
 544         {
 545                 userrec* goner = iter->second;
 546                 delete goner;
 547                 clientlist.erase(iter);
 548         }
 549
 550         /*
 551          * It is OK to access the value here this way since we know
 552          * it exists, we just created it above.
 553          *
 554          * At NO other time should you access a value in a map or a
 555          * hash_map this way.
 556          */
 557         clientlist[tempnick] = new userrec();
 558
 559         NonBlocking(socket);
 560         log(DEBUG,"AddClient: %lu %s %d %s",(unsigned long)socket,host,port,ip);
 561
 562         clientlist[tempnick]->fd = socket;
 563         strlcpy(clientlist[tempnick]->nick, tn2,NICKMAX);
 564         strlcpy(clientlist[tempnick]->host, host,160);
 565         strlcpy(clientlist[tempnick]->dhost, host,160);
 566         clientlist[tempnick]->server = (char*)FindServerNamePtr(Config->ServerName);
 567         strlcpy(clientlist[tempnick]->ident, "unknown",IDENTMAX);
 568         clientlist[tempnick]->registered = 0;
 569         clientlist[tempnick]->signon = TIME + Config->dns_timeout;
 570         clientlist[tempnick]->lastping = 1;
 571         clientlist[tempnick]->port = port;
 572         strlcpy(clientlist[tempnick]->ip,ip,16);
 573
 574         // set the registration timeout for this user
 575         unsigned long class_regtimeout = 90;
 576         int class_flood = 0;
 577         long class_threshold = 5;
 578         long class_sqmax = 262144;      // 256kb
 579         long class_rqmax = 4096;        // 4k
 580
 581         for (ClassVector::iterator i = Config->Classes.begin(); i != Config->Classes.end(); i++)
 582         {
 583                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
 584                 {
 585                         class_regtimeout = (unsigned long)i->registration_timeout;
 586                         class_flood = i->flood;
 587                         clientlist[tempnick]->pingmax = i->pingtime;
 588                         class_threshold = i->threshold;
 589                         class_sqmax = i->sendqmax;
 590                         class_rqmax = i->recvqmax;
 591                         break;
 592                 }
 593         }
 594
 595         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax + Config->dns_timeout;
 596         clientlist[tempnick]->timeout = TIME+class_regtimeout;
 597         clientlist[tempnick]->flood = class_flood;
 598         clientlist[tempnick]->threshold = class_threshold;
 599         clientlist[tempnick]->sendqmax = class_sqmax;
 600         clientlist[tempnick]->recvqmax = class_rqmax;
 601
 602         ucrec a;
 603         a.channel = NULL;
 604         a.uc_modes = 0;
 605         for (int i = 0; i < MAXCHANS; i++)
 606                 clientlist[tempnick]->chans.push_back(a);
 607
 608         if (clientlist.size() > Config->SoftLimit)
 609         {
 610                 kill_link(clientlist[tempnick],"No more connections allowed");
 611                 return;
 612         }
 613
 614         if (clientlist.size() >= MAXCLIENTS)
 615         {
 616                 kill_link(clientlist[tempnick],"No more connections allowed");
 617                 return;
 618         }
 619
 620         // this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 621         // its a pretty big but for the moment valid assumption:
 622         // file descriptors are handed out starting at 0, and are recycled as theyre freed.
 623         // therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 624         // irc server at once (or the irc server otherwise initiating this many connections, files etc)
 625         // which for the time being is a physical impossibility (even the largest networks dont have more
 626         // than about 10,000 users on ONE server!)
 627         if ((unsigned)socket > 65534)
 628         {
 629                 kill_link(clientlist[tempnick],"Server is full");
 630                 return;
 631         }
 632         char* e = matches_exception(ip);
 633         if (!e)
 634         {
 635                 char* r = matches_zline(ip);
 636                 if (r)
 637                 {
 638                         char reason[MAXBUF];
 639                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
 640                         kill_link(clientlist[tempnick],reason);
 641                         return;
 642                 }
 643         }
 644         fd_ref_table[socket] = clientlist[tempnick];
 645         local_users.push_back(clientlist[tempnick]);
 646         ServerInstance->SE->AddFd(socket,true,X_ESTAB_CLIENT);
 647 }
 648
 649 void FullConnectUser(userrec* user)
 650 {
 651         ServerInstance->stats->statsConnects++;
 652         user->idle_lastmsg = TIME;
 653         log(DEBUG,"ConnectUser: %s",user->nick);
 654
 655         if ((strcmp(Passwd(user),"")) && (!user->haspassed))
 656         {
 657                 kill_link(user,"Invalid password");
 658                 return;
 659         }
 660         if (IsDenied(user))
 661         {
 662                 kill_link(user,"Unauthorised connection");
 663                 return;
 664         }
 665
 666         char match_against[MAXBUF];
 667         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
 668         char* e = matches_exception(match_against);
 669         if (!e)
 670         {
 671                 char* r = matches_gline(match_against);
 672                 if (r)
 673                 {
 674                         char reason[MAXBUF];
 675                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
 676                         kill_link_silent(user,reason);
 677                         return;
 678                 }
 679                 r = matches_kline(user->host);
 680                 if (r)
 681                 {
 682                         char reason[MAXBUF];
 683                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
 684                         kill_link_silent(user,reason);
 685                         return;
 686                 }
 687         }
 688
 689
 690         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Config->Network);
 691         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Config->Network,user->nick,user->ident,user->host);
 692         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,Config->ServerName,VERSION);
 693         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
 694         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,Config->ServerName,VERSION);
 695         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
 696         std::stringstream v;
 697         v << "WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
 698         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
 699         v << " TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=20 AWAYLEN=" << MAXAWAY << " CHANMODES=ohvb,k,l,psmnti NETWORK=";
 700         v << Config->Network;
 701         std::string data005 = v.str();
 702         FOREACH_MOD On005Numeric(data005);
 703         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
 704         // so i'd better split it :)
 705         std::stringstream out(data005);
 706         std::string token = "";
 707         std::string line5 = "";
 708         int token_counter = 0;
 709         while (!out.eof())
 710         {
 711                 out >> token;
 712                 line5 = line5 + token + " ";
 713                 token_counter++;
 714                 if ((token_counter >= 13) || (out.eof() == true))
 715                 {
 716                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
 717                         line5 = "";
 718                         token_counter = 0;
 719                 }
 720         }
 721         ShowMOTD(user);
 722
 723         // fix 3 by brain, move registered = 7 below these so that spurious modes and host changes dont go out
 724         // onto the network and produce 'fake direction'
 725         FOREACH_MOD OnUserConnect(user);
 726         FOREACH_MOD OnGlobalConnect(user);
 727         user->registered = 7;
 728         WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,user->ip);
 729 }
 730
 731
 732 /* shows the message of the day, and any other on-logon stuff */
 733 void ConnectUser(userrec *user)
 734 {
 735         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
 736         if ((user->dns_done) && (user->registered >= 3) && (AllModulesReportReady(user)))
 737         {
 738                 FullConnectUser(user);
 739         }
 740 }
 741
 742 /* re-allocates a nick in the user_hash after they change nicknames,
 743  * returns a pointer to the new user as it may have moved */
 744
 745 userrec* ReHashNick(char* Old, char* New)
 746 {
 747         //user_hash::iterator newnick;
 748         user_hash::iterator oldnick = clientlist.find(Old);
 749
 750         log(DEBUG,"ReHashNick: %s %s",Old,New);
 751
 752         if (!strcasecmp(Old,New))
 753         {
 754                 log(DEBUG,"old nick is new nick, skipping");
 755                 return oldnick->second;
 756         }
 757
 758         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
 759
 760         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
 761
 762         userrec* olduser = oldnick->second;
 763         clientlist[New] = olduser;
 764         clientlist.erase(oldnick);
 765
 766         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
 767
 768         return clientlist[New];
 769 }
 770
 771 void force_nickchange(userrec* user,const char* newnick)
 772 {
 773         char nick[MAXBUF];
 774         int MOD_RESULT = 0;
 775
 776         strcpy(nick,"");
 777
 778         FOREACH_RESULT(OnUserPreNick(user,newnick));
 779         if (MOD_RESULT) {
 780                 ServerInstance->stats->statsCollisions++;
 781                 kill_link(user,"Nickname collision");
 782                 return;
 783         }
 784         if (matches_qline(newnick))
 785         {
 786                 ServerInstance->stats->statsCollisions++;
 787                 kill_link(user,"Nickname collision");
 788                 return;
 789         }
 790
 791         if (user)
 792         {
 793                 if (newnick)
 794                 {
 795                         strncpy(nick,newnick,MAXBUF);
 796                 }
 797                 if (user->registered == 7)
 798                 {
 799                         char* pars[1];
 800                         pars[0] = nick;
 801                         std::string cmd = "NICK";
 802                         ServerInstance->Parser->CallHandler(cmd,pars,1,user);
 803                 }
 804         }
 805 }
 806