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 extern Module* IOHookModule;
  55 std::vector<userrec*> local_users;
  56
  57 std::vector<userrec*> all_opers;
  58
  59 template<typename T> inline string ConvToStr(const T &in)
  60 {
  61         stringstream tmp;
  62         if (!(tmp << in)) return string();
  63         return tmp.str();
  64 }
  65
  66 userrec::userrec()
  67 {
  68         // the PROPER way to do it, AVOID bzero at *ALL* costs
  69         strcpy(nick,"");
  70         strcpy(ip,"127.0.0.1");
  71         timeout = 0;
  72         strcpy(ident,"");
  73         strcpy(host,"");
  74         strcpy(dhost,"");
  75         strcpy(fullname,"");
  76         strcpy(modes,"");
  77         server = (char*)FindServerNamePtr(Config->ServerName);
  78         strcpy(awaymsg,"");
  79         strcpy(oper,"");
  80         reset_due = TIME;
  81         lines_in = 0;
  82         fd = lastping = signon = idle_lastmsg = nping = registered = 0;
  83         flood = port = bytes_in = bytes_out = cmds_in = cmds_out = 0;
  84         haspassed = false;
  85         dns_done = false;
  86         recvq = "";
  87         sendq = "";
  88         chans.clear();
  89         invites.clear();
  90 }
  91
  92 userrec::~userrec()
  93 {
  94 }
  95
  96 void userrec::CloseSocket()
  97 {
  98         shutdown(this->fd,2);
  99         close(this->fd);
 100 }
 101
 102 char* userrec::GetFullHost()
 103 {
 104         static char result[MAXBUF];
 105         snprintf(result,MAXBUF,"%s!%s@%s",nick,ident,dhost);
 106         return result;
 107 }
 108
 109 int userrec::ReadData(void* buffer, size_t size)
 110 {
 111         if (this->fd > -1)
 112         {
 113                 return read(this->fd, buffer, size);
 114         }
 115         else return 0;
 116 }
 117
 118
 119 char* userrec::GetFullRealHost()
 120 {
 121         static char fresult[MAXBUF];
 122         snprintf(fresult,MAXBUF,"%s!%s@%s",nick,ident,host);
 123         return fresult;
 124 }
 125
 126 bool userrec::IsInvited(irc::string &channel)
 127 {
 128         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 129         {
 130                 irc::string compare = i->channel;
 131                 if (compare == channel)
 132                 {
 133                         return true;
 134                 }
 135         }
 136         return false;
 137 }
 138
 139 InvitedList* userrec::GetInviteList()
 140 {
 141         return &invites;
 142 }
 143
 144 void userrec::InviteTo(irc::string &channel)
 145 {
 146         Invited i;
 147         i.channel = channel;
 148         invites.push_back(i);
 149 }
 150
 151 void userrec::RemoveInvite(irc::string &channel)
 152 {
 153         log(DEBUG,"Removing invites");
 154         if (invites.size())
 155         {
 156                 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 157                 {
 158                         irc::string compare = i->channel;
 159                         if (compare == channel)
 160                         {
 161                                 invites.erase(i);
 162                                 return;
 163                         }
 164                 }
 165         }
 166 }
 167
 168 bool userrec::HasPermission(std::string &command)
 169 {
 170         char TypeName[MAXBUF],Classes[MAXBUF],ClassName[MAXBUF],CommandList[MAXBUF];
 171         char* mycmd;
 172         char* savept;
 173         char* savept2;
 174
 175         // users on u-lined servers can completely bypass
 176         // all permissions based checks.
 177         //
 178         // of course, if this is sent to a remote server and this
 179         // server is not ulined there, then that other server
 180         // silently drops the command.
 181         if (is_uline(this->server))
 182                 return true;
 183
 184         // are they even an oper at all?
 185         if (strchr(this->modes,'o'))
 186         {
 187                 for (int j =0; j < Config->ConfValueEnum("type",&Config->config_f); j++)
 188                 {
 189                         Config->ConfValue("type","name",j,TypeName,&Config->config_f);
 190                         if (!strcmp(TypeName,this->oper))
 191                         {
 192                                 Config->ConfValue("type","classes",j,Classes,&Config->config_f);
 193                                 char* myclass = strtok_r(Classes," ",&savept);
 194                                 while (myclass)
 195                                 {
 196                                         for (int k =0; k < Config->ConfValueEnum("class",&Config->config_f); k++)
 197                                         {
 198                                                 Config->ConfValue("class","name",k,ClassName,&Config->config_f);
 199                                                 if (!strcmp(ClassName,myclass))
 200                                                 {
 201                                                         Config->ConfValue("class","commands",k,CommandList,&Config->config_f);
 202                                                         mycmd = strtok_r(CommandList," ",&savept2);
 203                                                         while (mycmd)
 204                                                         {
 205                                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 206                                                                 {
 207                                                                         return true;
 208                                                                 }
 209                                                                 mycmd = strtok_r(NULL," ",&savept2);
 210                                                         }
 211                                                 }
 212                                         }
 213                                         myclass = strtok_r(NULL," ",&savept);
 214                                 }
 215                         }
 216                 }
 217         }
 218         return false;
 219 }
 220
 221
 222 bool userrec::AddBuffer(std::string a)
 223 {
 224         std::string b = "";
 225         for (unsigned int i = 0; i < a.length(); i++)
 226                 if ((a[i] != '\r') && (a[i] != '\0') && (a[i] != 7))
 227                         b = b + a[i];
 228         std::stringstream stream(recvq);
 229         stream << b;
 230         recvq = stream.str();
 231         unsigned int i = 0;
 232         // count the size of the first line in the buffer.
 233         while (i < recvq.length())
 234         {
 235                 if (recvq[i++] == '\n')
 236                         break;
 237         }
 238         if (recvq.length() > (unsigned)this->recvqmax)
 239         {
 240                 this->SetWriteError("RecvQ exceeded");
 241                 WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 242         }
 243         // return false if we've had more than 600 characters WITHOUT
 244         // a carriage return (this is BAD, drop the socket)
 245         return (i < 600);
 246 }
 247
 248 bool userrec::BufferIsReady()
 249 {
 250         for (unsigned int i = 0; i < recvq.length(); i++)
 251                 if (recvq[i] == '\n')
 252                         return true;
 253         return false;
 254 }
 255
 256 void userrec::ClearBuffer()
 257 {
 258         recvq = "";
 259 }
 260
 261 std::string userrec::GetBuffer()
 262 {
 263         if (recvq == "")
 264                 return "";
 265         char* line = (char*)recvq.c_str();
 266         std::string ret = "";
 267         while ((*line != '\n') && (strlen(line)))
 268         {
 269                 ret = ret + *line;
 270                 line++;
 271         }
 272         if ((*line == '\n') || (*line == '\r'))
 273                 line++;
 274         recvq = line;
 275         return ret;
 276 }
 277
 278 void userrec::AddWriteBuf(std::string data)
 279 {
 280         if (this->GetWriteError() != "")
 281                 return;
 282         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 283         {
 284                 /* Fix by brain - Set the error text BEFORE calling writeopers, because
 285                  * if we dont it'll recursively  call here over and over again trying
 286                  * to repeatedly add the text to the sendq!
 287                  */
 288                 this->SetWriteError("SendQ exceeded");
 289                 WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 290                 return;
 291         }
 292         std::stringstream stream;
 293         stream << sendq << data;
 294         sendq = stream.str();
 295 }
 296
 297 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 298 void userrec::FlushWriteBuf()
 299 {
 300         if (sendq.length())
 301         {
 302                 char* tb = (char*)this->sendq.c_str();
 303                 int n_sent = write(this->fd,tb,this->sendq.length());
 304                 if (n_sent == -1)
 305                 {
 306                         this->SetWriteError(strerror(errno));
 307                 }
 308                 else
 309                 {
 310                         // advance the queue
 311                         tb += n_sent;
 312                         this->sendq = tb;
 313                         // update the user's stats counters
 314                         this->bytes_out += n_sent;
 315                         this->cmds_out++;
 316                 }
 317         }
 318 }
 319
 320 void userrec::SetWriteError(std::string error)
 321 {
 322         log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 323         // don't try to set the error twice, its already set take the first string.
 324         if (this->WriteError == "")
 325                 this->WriteError = error;
 326 }
 327
 328 std::string userrec::GetWriteError()
 329 {
 330         return this->WriteError;
 331 }
 332
 333 void AddOper(userrec* user)
 334 {
 335         log(DEBUG,"Oper added to optimization list");
 336         all_opers.push_back(user);
 337 }
 338
 339 void DeleteOper(userrec* user)
 340 {
 341         for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 342         {
 343                 if (*a == user)
 344                 {
 345                         log(DEBUG,"Oper removed from optimization list");
 346                         all_opers.erase(a);
 347                         return;
 348                 }
 349         }
 350 }
 351
 352 void kill_link(userrec *user,const char* r)
 353 {
 354         user_hash::iterator iter = clientlist.find(user->nick);
 355
 356         char reason[MAXBUF];
 357
 358         strncpy(reason,r,MAXBUF);
 359
 360         if (strlen(reason)>MAXQUIT)
 361         {
 362                 reason[MAXQUIT-1] = '\0';
 363         }
 364
 365         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
 366         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
 367         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
 368
 369         if (user->registered == 7) {
 370                 FOREACH_MOD OnUserQuit(user,reason);
 371                 WriteCommonExcept(user,"QUIT :%s",reason);
 372         }
 373
 374         user->FlushWriteBuf();
 375
 376         FOREACH_MOD OnUserDisconnect(user);
 377
 378         if (user->fd > -1)
 379         {
 380                 if (IOHookModule)
 381                 {
 382                         IOHookModule->OnRawSocketClose(user->fd);
 383                 }
 384                 SE->DelFd(user->fd);
 385                 user->CloseSocket();
 386         }
 387
 388         // this must come before the WriteOpers so that it doesnt try to fill their buffer with anything
 389         // if they were an oper with +s.
 390         if (user->registered == 7) {
 391                 purge_empty_chans(user);
 392                 // fix by brain: only show local quits because we only show local connects (it just makes SENSE)
 393                 if (user->fd > -1)
 394                         WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
 395                 AddWhoWas(user);
 396         }
 397
 398         if (iter != clientlist.end())
 399         {
 400                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
 401                 if (user->fd > -1)
 402                 {
 403                         fd_ref_table[user->fd] = NULL;
 404                         if (find(local_users.begin(),local_users.end(),user) != local_users.end())
 405                         {
 406                                 local_users.erase(find(local_users.begin(),local_users.end(),user));
 407                                 log(DEBUG,"Delete local user");
 408                         }
 409                 }
 410                 clientlist.erase(iter);
 411         }
 412         delete user;
 413 }
 414
 415 void kill_link_silent(userrec *user,const char* r)
 416 {
 417         user_hash::iterator iter = clientlist.find(user->nick);
 418
 419         char reason[MAXBUF];
 420
 421         strncpy(reason,r,MAXBUF);
 422
 423         if (strlen(reason)>MAXQUIT)
 424         {
 425                 reason[MAXQUIT-1] = '\0';
 426         }
 427
 428         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
 429         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
 430         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
 431
 432         user->FlushWriteBuf();
 433
 434         if (user->registered == 7) {
 435                 FOREACH_MOD OnUserQuit(user,reason);
 436                 WriteCommonExcept(user,"QUIT :%s",reason);
 437         }
 438
 439         FOREACH_MOD OnUserDisconnect(user);
 440
 441         if (user->fd > -1)
 442         {
 443                 if (IOHookModule)
 444                 {
 445                         IOHookModule->OnRawSocketClose(user->fd);
 446                 }
 447                 SE->DelFd(user->fd);
 448                 user->CloseSocket();
 449         }
 450
 451         if (user->registered == 7) {
 452                 purge_empty_chans(user);
 453         }
 454
 455         if (iter != clientlist.end())
 456         {
 457                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
 458                 if (user->fd > -1)
 459                 {
 460                         fd_ref_table[user->fd] = NULL;
 461                         if (find(local_users.begin(),local_users.end(),user) != local_users.end())
 462                         {
 463                                 log(DEBUG,"Delete local user");
 464                                 local_users.erase(find(local_users.begin(),local_users.end(),user));
 465                         }
 466                 }
 467                 clientlist.erase(iter);
 468         }
 469         delete user;
 470 }
 471
 472
 473 /* adds or updates an entry in the whowas list */
 474 void AddWhoWas(userrec* u)
 475 {
 476         whowas_hash::iterator iter = whowas.find(u->nick);
 477         WhoWasUser *a = new WhoWasUser();
 478         strlcpy(a->nick,u->nick,NICKMAX);
 479         strlcpy(a->ident,u->ident,IDENTMAX);
 480         strlcpy(a->dhost,u->dhost,160);
 481         strlcpy(a->host,u->host,160);
 482         strlcpy(a->fullname,u->fullname,MAXGECOS);
 483         strlcpy(a->server,u->server,256);
 484         a->signon = u->signon;
 485
 486         /* MAX_WHOWAS:   max number of /WHOWAS items
 487          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
 488          *               can be replaced by a newer one
 489          */
 490
 491         if (iter == whowas.end())
 492         {
 493                 if (whowas.size() >= (unsigned)WHOWAS_MAX)
 494                 {
 495                         for (whowas_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
 496                         {
 497                                 // 3600 seconds in an hour ;)
 498                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
 499                                 {
 500                                         // delete the old one
 501                                         if (i->second) delete i->second;
 502                                         // replace with new one
 503                                         i->second = a;
 504                                         log(DEBUG,"added WHOWAS entry, purged an old record");
 505                                         return;
 506                                 }
 507                         }
 508                         // no space left and user doesnt exist. Don't leave ram in use!
 509                         log(DEBUG,"Not able to update whowas (list at WHOWAS_MAX entries and trying to add new?), freeing excess ram");
 510                         delete a;
 511                 }
 512                 else
 513                 {
 514                         log(DEBUG,"added fresh WHOWAS entry");
 515                         whowas[a->nick] = a;
 516                 }
 517         }
 518         else
 519         {
 520                 log(DEBUG,"updated WHOWAS entry");
 521                 if (iter->second) delete iter->second;
 522                 iter->second = a;
 523         }
 524 }
 525
 526 /* add a client connection to the sockets list */
 527 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
 528 {
 529         string tempnick;
 530         char tn2[MAXBUF];
 531         user_hash::iterator iter;
 532
 533         tempnick = ConvToStr(socket) + "-unknown";
 534         sprintf(tn2,"%lu-unknown",(unsigned long)socket);
 535
 536         iter = clientlist.find(tempnick);
 537
 538         // fix by brain.
 539         // as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 540         // using one as a registered connection. As theyre per fd, we can also safely assume
 541         // that we wont have collisions. Therefore, if the nick exists in the list, its only
 542         // used by a dead socket, erase the iterator so that the new client may reclaim it.
 543         // this was probably the cause of 'server ignores me when i hammer it with reconnects'
 544         // issue in earlier alphas/betas
 545         if (iter != clientlist.end())
 546         {
 547                 userrec* goner = iter->second;
 548                 delete goner;
 549                 clientlist.erase(iter);
 550         }
 551
 552         /*
 553          * It is OK to access the value here this way since we know
 554          * it exists, we just created it above.
 555          *
 556          * At NO other time should you access a value in a map or a
 557          * hash_map this way.
 558          */
 559         clientlist[tempnick] = new userrec();
 560
 561         NonBlocking(socket);
 562         log(DEBUG,"AddClient: %lu %s %d %s",(unsigned long)socket,host,port,ip);
 563
 564         clientlist[tempnick]->fd = socket;
 565         strlcpy(clientlist[tempnick]->nick, tn2,NICKMAX);
 566         strlcpy(clientlist[tempnick]->host, host,160);
 567         strlcpy(clientlist[tempnick]->dhost, host,160);
 568         clientlist[tempnick]->server = (char*)FindServerNamePtr(Config->ServerName);
 569         strlcpy(clientlist[tempnick]->ident, "unknown",IDENTMAX);
 570         clientlist[tempnick]->registered = 0;
 571         clientlist[tempnick]->signon = TIME + Config->dns_timeout;
 572         clientlist[tempnick]->lastping = 1;
 573         clientlist[tempnick]->port = port;
 574         strlcpy(clientlist[tempnick]->ip,ip,16);
 575
 576         // set the registration timeout for this user
 577         unsigned long class_regtimeout = 90;
 578         int class_flood = 0;
 579         long class_threshold = 5;
 580         long class_sqmax = 262144;      // 256kb
 581         long class_rqmax = 4096;        // 4k
 582
 583         for (ClassVector::iterator i = Config->Classes.begin(); i != Config->Classes.end(); i++)
 584         {
 585                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
 586                 {
 587                         class_regtimeout = (unsigned long)i->registration_timeout;
 588                         class_flood = i->flood;
 589                         clientlist[tempnick]->pingmax = i->pingtime;
 590                         class_threshold = i->threshold;
 591                         class_sqmax = i->sendqmax;
 592                         class_rqmax = i->recvqmax;
 593                         break;
 594                 }
 595         }
 596
 597         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax + Config->dns_timeout;
 598         clientlist[tempnick]->timeout = TIME+class_regtimeout;
 599         clientlist[tempnick]->flood = class_flood;
 600         clientlist[tempnick]->threshold = class_threshold;
 601         clientlist[tempnick]->sendqmax = class_sqmax;
 602         clientlist[tempnick]->recvqmax = class_rqmax;
 603
 604         ucrec a;
 605         a.channel = NULL;
 606         a.uc_modes = 0;
 607         for (int i = 0; i < MAXCHANS; i++)
 608                 clientlist[tempnick]->chans.push_back(a);
 609
 610         if (clientlist.size() > Config->SoftLimit)
 611         {
 612                 kill_link(clientlist[tempnick],"No more connections allowed");
 613                 return;
 614         }
 615
 616         if (clientlist.size() >= MAXCLIENTS)
 617         {
 618                 kill_link(clientlist[tempnick],"No more connections allowed");
 619                 return;
 620         }
 621
 622         // this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 623         // its a pretty big but for the moment valid assumption:
 624         // file descriptors are handed out starting at 0, and are recycled as theyre freed.
 625         // therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 626         // irc server at once (or the irc server otherwise initiating this many connections, files etc)
 627         // which for the time being is a physical impossibility (even the largest networks dont have more
 628         // than about 10,000 users on ONE server!)
 629         if ((unsigned)socket > 65534)
 630         {
 631                 kill_link(clientlist[tempnick],"Server is full");
 632                 return;
 633         }
 634         char* e = matches_exception(ip);
 635         if (!e)
 636         {
 637                 char* r = matches_zline(ip);
 638                 if (r)
 639                 {
 640                         char reason[MAXBUF];
 641                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
 642                         kill_link(clientlist[tempnick],reason);
 643                         return;
 644                 }
 645         }
 646         fd_ref_table[socket] = clientlist[tempnick];
 647         local_users.push_back(clientlist[tempnick]);
 648         SE->AddFd(socket,true,X_ESTAB_CLIENT);
 649 }
 650
 651 void FullConnectUser(userrec* user)
 652 {
 653         stats->statsConnects++;
 654         user->idle_lastmsg = TIME;
 655         log(DEBUG,"ConnectUser: %s",user->nick);
 656
 657         if ((strcmp(Passwd(user),"")) && (!user->haspassed))
 658         {
 659                 kill_link(user,"Invalid password");
 660                 return;
 661         }
 662         if (IsDenied(user))
 663         {
 664                 kill_link(user,"Unauthorised connection");
 665                 return;
 666         }
 667
 668         char match_against[MAXBUF];
 669         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
 670         char* e = matches_exception(match_against);
 671         if (!e)
 672         {
 673                 char* r = matches_gline(match_against);
 674                 if (r)
 675                 {
 676                         char reason[MAXBUF];
 677                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
 678                         kill_link_silent(user,reason);
 679                         return;
 680                 }
 681                 r = matches_kline(user->host);
 682                 if (r)
 683                 {
 684                         char reason[MAXBUF];
 685                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
 686                         kill_link_silent(user,reason);
 687                         return;
 688                 }
 689         }
 690
 691
 692         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Config->Network);
 693         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Config->Network,user->nick,user->ident,user->host);
 694         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,Config->ServerName,VERSION);
 695         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
 696         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,Config->ServerName,VERSION);
 697         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
 698         std::stringstream v;
 699         v << "WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
 700         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
 701         v << " TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=20 AWAYLEN=" << MAXAWAY << " CHANMODES=ohvb,k,l,psmnti NETWORK=";
 702         v << Config->Network;
 703         std::string data005 = v.str();
 704         FOREACH_MOD On005Numeric(data005);
 705         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
 706         // so i'd better split it :)
 707         std::stringstream out(data005);
 708         std::string token = "";
 709         std::string line5 = "";
 710         int token_counter = 0;
 711         while (!out.eof())
 712         {
 713                 out >> token;
 714                 line5 = line5 + token + " ";
 715                 token_counter++;
 716                 if ((token_counter >= 13) || (out.eof() == true))
 717                 {
 718                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
 719                         line5 = "";
 720                         token_counter = 0;
 721                 }
 722         }
 723         ShowMOTD(user);
 724
 725         // fix 3 by brain, move registered = 7 below these so that spurious modes and host changes dont go out
 726         // onto the network and produce 'fake direction'
 727         FOREACH_MOD OnUserConnect(user);
 728         FOREACH_MOD OnGlobalConnect(user);
 729         user->registered = 7;
 730         WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,user->ip);
 731 }
 732
 733
 734 /* shows the message of the day, and any other on-logon stuff */
 735 void ConnectUser(userrec *user)
 736 {
 737         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
 738         if ((user->dns_done) && (user->registered >= 3) && (AllModulesReportReady(user)))
 739         {
 740                 FullConnectUser(user);
 741         }
 742 }
 743
 744 /* re-allocates a nick in the user_hash after they change nicknames,
 745  * returns a pointer to the new user as it may have moved */
 746
 747 userrec* ReHashNick(char* Old, char* New)
 748 {
 749         //user_hash::iterator newnick;
 750         user_hash::iterator oldnick = clientlist.find(Old);
 751
 752         log(DEBUG,"ReHashNick: %s %s",Old,New);
 753
 754         if (!strcasecmp(Old,New))
 755         {
 756                 log(DEBUG,"old nick is new nick, skipping");
 757                 return oldnick->second;
 758         }
 759
 760         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
 761
 762         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
 763
 764         userrec* olduser = oldnick->second;
 765         clientlist[New] = olduser;
 766         clientlist.erase(oldnick);
 767
 768         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
 769
 770         return clientlist[New];
 771 }
 772
 773 void force_nickchange(userrec* user,const char* newnick)
 774 {
 775         char nick[MAXBUF];
 776         int MOD_RESULT = 0;
 777
 778         strcpy(nick,"");
 779
 780         FOREACH_RESULT(OnUserPreNick(user,newnick));
 781         if (MOD_RESULT) {
 782                 stats->statsCollisions++;
 783                 kill_link(user,"Nickname collision");
 784                 return;
 785         }
 786         if (matches_qline(newnick))
 787         {
 788                 stats->statsCollisions++;
 789                 kill_link(user,"Nickname collision");
 790                 return;
 791         }
 792
 793         if (user)
 794         {
 795                 if (newnick)
 796                 {
 797                         strncpy(nick,newnick,MAXBUF);
 798                 }
 799                 if (user->registered == 7)
 800                 {
 801                         char* pars[1];
 802                         pars[0] = nick;
 803                         handle_nick(pars,1,user);
 804                 }
 805         }
 806 }
 807