src/users.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 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 #include "cull_list.h"
  39
  40 extern InspIRCd* ServerInstance;
  41 extern int WHOWAS_STALE;
  42 extern int WHOWAS_MAX;
  43 extern std::vector<Module*> modules;
  44 extern std::vector<ircd_module*> factory;
  45 extern std::vector<InspSocket*> module_sockets;
  46 extern int MODCOUNT;
  47 extern InspSocket* socket_ref[MAX_DESCRIPTORS];
  48 extern time_t TIME;
  49 extern userrec* fd_ref_table[MAX_DESCRIPTORS];
  50 extern ServerConfig *Config;
  51 extern user_hash clientlist;
  52 extern whowas_hash whowas;
  53 extern std::vector<userrec*> local_users;
  54
  55 std::vector<userrec*> all_opers;
  56
  57 typedef std::map<irc::string,char*> opertype_t;
  58 typedef opertype_t operclass_t;
  59
  60 opertype_t opertypes;
  61 operclass_t operclass;
  62
  63 void ReadClassesAndTypes()
  64 {
  65         char TypeName[MAXBUF],Classes[MAXBUF],ClassName[MAXBUF],CommandList[MAXBUF];
  66         for (opertype_t::iterator n = opertypes.begin(); n != opertypes.end(); n++)
  67         {
  68                 if (n->second)
  69                         delete[] n->second;
  70         }
  71         for (operclass_t::iterator n = operclass.begin(); n != operclass.end(); n++)
  72         {
  73                 if (n->second)
  74                         delete[] n->second;
  75         }
  76         opertypes.clear();
  77         operclass.clear();
  78         for (int j =0; j < Config->ConfValueEnum("type",&Config->config_f); j++)
  79         {
  80                 Config->ConfValue("type","name",j,TypeName,&Config->config_f);
  81                 Config->ConfValue("type","classes",j,Classes,&Config->config_f);
  82                 opertypes[TypeName] = strdup(Classes);
  83                 log(DEBUG,"Read oper TYPE '%s' with classes '%s'",TypeName,Classes);
  84         }
  85         for (int k =0; k < Config->ConfValueEnum("class",&Config->config_f); k++)
  86         {
  87                 Config->ConfValue("class","name",k,ClassName,&Config->config_f);
  88                 Config->ConfValue("class","commands",k,CommandList,&Config->config_f);
  89                 operclass[ClassName] = strdup(CommandList);
  90                 log(DEBUG,"Read oper CLASS '%s' with commands '%s'",ClassName,CommandList);
  91         }
  92 }
  93
  94 template<typename T> inline string ConvToStr(const T &in)
  95 {
  96         stringstream tmp;
  97         if (!(tmp << in)) return string();
  98         return tmp.str();
  99 }
 100
 101 userrec::userrec()
 102 {
 103         // the PROPER way to do it, AVOID bzero at *ALL* costs
 104         *password = *nick = *ident = *host = *dhost = *fullname = *modes = *awaymsg = *oper = 0;
 105         server = (char*)FindServerNamePtr(Config->ServerName);
 106         reset_due = TIME;
 107         lines_in = fd = lastping = signon = idle_lastmsg = nping = registered = 0;
 108         timeout = flood = port = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 109         haspassed = dns_done = false;
 110         recvq = "";
 111         sendq = "";
 112         chans.clear();
 113         invites.clear();
 114 }
 115
 116 userrec::~userrec()
 117 {
 118 }
 119
 120 void userrec::MakeHost(char* nhost)
 121 {
 122         /* This is much faster than snprintf */
 123         char* t = nhost;
 124         for(char* n = ident; *n; n++)
 125                 *t++ = *n;
 126         *t++ = '@';
 127         for(char* n = host; *n; n++)
 128                 *t++ = *n;
 129         *t = 0;
 130 }
 131
 132 void userrec::CloseSocket()
 133 {
 134         shutdown(this->fd,2);
 135         close(this->fd);
 136 }
 137
 138 char* userrec::GetFullHost()
 139 {
 140         static char result[MAXBUF];
 141         char* t = result;
 142         for(char* n = nick; *n; n++)
 143                 *t++ = *n;
 144         *t++ = '!';
 145         for(char* n = ident; *n; n++)
 146                 *t++ = *n;
 147         *t++ = '@';
 148         for(char* n = dhost; *n; n++)
 149                 *t++ = *n;
 150         *t = 0;
 151         return result;
 152 }
 153
 154 char* userrec::MakeWildHost()
 155 {
 156         static char nresult[MAXBUF];
 157         char* t = nresult;
 158         *t++ = '*';     *t++ = '!';
 159         *t++ = '*';     *t++ = '@';
 160         for(char* n = dhost; *n; n++)
 161                 *t++ = *n;
 162         *t = 0;
 163         return nresult;
 164 }
 165
 166 int userrec::ReadData(void* buffer, size_t size)
 167 {
 168         if (this->fd > -1)
 169         {
 170                 return read(this->fd, buffer, size);
 171         }
 172         else return 0;
 173 }
 174
 175
 176 char* userrec::GetFullRealHost()
 177 {
 178         static char fresult[MAXBUF];
 179         char* t = fresult;
 180         for(char* n = nick; *n; n++)
 181                 *t++ = *n;
 182         *t++ = '!';
 183         for(char* n = ident; *n; n++)
 184                 *t++ = *n;
 185         *t++ = '@';
 186         for(char* n = host; *n; n++)
 187                 *t++ = *n;
 188         *t = 0;
 189         return fresult;
 190 }
 191
 192 bool userrec::IsInvited(irc::string &channel)
 193 {
 194         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 195         {
 196                 irc::string compare = i->channel;
 197                 if (compare == channel)
 198                 {
 199                         return true;
 200                 }
 201         }
 202         return false;
 203 }
 204
 205 InvitedList* userrec::GetInviteList()
 206 {
 207         return &invites;
 208 }
 209
 210 void userrec::InviteTo(irc::string &channel)
 211 {
 212         Invited i;
 213         i.channel = channel;
 214         invites.push_back(i);
 215 }
 216
 217 void userrec::RemoveInvite(irc::string &channel)
 218 {
 219         log(DEBUG,"Removing invites");
 220         if (invites.size())
 221         {
 222                 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 223                 {
 224                         irc::string compare = i->channel;
 225                         if (compare == channel)
 226                         {
 227                                 invites.erase(i);
 228                                 return;
 229                         }
 230                 }
 231         }
 232 }
 233
 234 bool userrec::HasPermission(std::string &command)
 235 {
 236         char* mycmd;
 237         char* savept;
 238         char* savept2;
 239
 240         // users on remote servers can completely bypass
 241         // all permissions based checks.
 242         // This prevents desyncs when one server has different
 243         // type/class tags to another.
 244         if (!IS_LOCAL(this))
 245                 return true;
 246
 247         // are they even an oper at all?
 248         if (*this->oper)
 249         {
 250                 opertype_t::iterator iter_opertype = opertypes.find(this->oper);
 251                 if (iter_opertype != opertypes.end())
 252                 {
 253                         char* Classes = iter_opertype->second;
 254                         char* myclass = strtok_r(Classes," ",&savept);
 255                         while (myclass)
 256                         {
 257                                 operclass_t::iterator iter_operclass = operclass.find(myclass);
 258                                 if (iter_operclass != operclass.end())
 259                                 {
 260                                         char* CommandList = iter_operclass->second;
 261                                         mycmd = strtok_r(CommandList," ",&savept2);
 262                                         while (mycmd)
 263                                         {
 264                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 265                                                 {
 266                                                         return true;
 267                                                 }
 268                                                 mycmd = strtok_r(NULL," ",&savept2);
 269                                         }
 270                                 }
 271                                 myclass = strtok_r(NULL," ",&savept);
 272                         }
 273                 }
 274         }
 275         return false;
 276 }
 277
 278
 279 bool userrec::AddBuffer(std::string a)
 280 {
 281         std::string b = "";
 282         for (unsigned int i = 0; i < a.length(); i++)
 283                 if ((a[i] != '\r') && (a[i] != '\0') && (a[i] != 7))
 284                         b = b + a[i];
 285         std::stringstream stream(recvq);
 286         stream << b;
 287         recvq = stream.str();
 288         unsigned int i = 0;
 289         // count the size of the first line in the buffer.
 290         while (i < recvq.length())
 291         {
 292                 if (recvq[i++] == '\n')
 293                         break;
 294         }
 295         if (recvq.length() > (unsigned)this->recvqmax)
 296         {
 297                 this->SetWriteError("RecvQ exceeded");
 298                 WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 299         }
 300         // return false if we've had more than 600 characters WITHOUT
 301         // a carriage return (this is BAD, drop the socket)
 302         return (i < 600);
 303 }
 304
 305 bool userrec::BufferIsReady()
 306 {
 307         unsigned int t = recvq.length();
 308         for (unsigned int i = 0; i < t; i++)
 309                 if (recvq[i] == '\n')
 310                         return true;
 311         return false;
 312 }
 313
 314 void userrec::ClearBuffer()
 315 {
 316         recvq = "";
 317 }
 318
 319 std::string userrec::GetBuffer()
 320 {
 321         if (recvq == "")
 322                 return "";
 323         char* line = (char*)recvq.c_str();
 324         std::string ret = "";
 325         while ((*line != '\n') && (*line))
 326         {
 327                 ret = ret + *line;
 328                 line++;
 329         }
 330         if ((*line == '\n') || (*line == '\r'))
 331                 line++;
 332         recvq = line;
 333         return ret;
 334 }
 335
 336 void userrec::AddWriteBuf(std::string data)
 337 {
 338         if (this->GetWriteError() != "")
 339                 return;
 340         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 341         {
 342                 /* Fix by brain - Set the error text BEFORE calling writeopers, because
 343                  * if we dont it'll recursively  call here over and over again trying
 344                  * to repeatedly add the text to the sendq!
 345                  */
 346                 this->SetWriteError("SendQ exceeded");
 347                 WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 348                 return;
 349         }
 350         std::stringstream stream;
 351         stream << sendq << data;
 352         sendq = stream.str();
 353 }
 354
 355 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 356 void userrec::FlushWriteBuf()
 357 {
 358         if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 359         {
 360                 char* tb = (char*)this->sendq.c_str();
 361                 int n_sent = write(this->fd,tb,this->sendq.length());
 362                 if (n_sent == -1)
 363                 {
 364                         this->SetWriteError(strerror(errno));
 365                 }
 366                 else
 367                 {
 368                         // advance the queue
 369                         tb += n_sent;
 370                         this->sendq = tb;
 371                         // update the user's stats counters
 372                         this->bytes_out += n_sent;
 373                         this->cmds_out++;
 374                 }
 375         }
 376 }
 377
 378 void userrec::SetWriteError(std::string error)
 379 {
 380         log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 381         // don't try to set the error twice, its already set take the first string.
 382         if (this->WriteError == "")
 383                 this->WriteError = error;
 384 }
 385
 386 std::string userrec::GetWriteError()
 387 {
 388         return this->WriteError;
 389 }
 390
 391 void AddOper(userrec* user)
 392 {
 393         log(DEBUG,"Oper added to optimization list");
 394         all_opers.push_back(user);
 395 }
 396
 397 void DeleteOper(userrec* user)
 398 {
 399         for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 400         {
 401                 if (*a == user)
 402                 {
 403                         log(DEBUG,"Oper removed from optimization list");
 404                         all_opers.erase(a);
 405                         return;
 406                 }
 407         }
 408 }
 409
 410 void kill_link(userrec *user,const char* r)
 411 {
 412         user_hash::iterator iter = clientlist.find(user->nick);
 413
 414         char reason[MAXBUF];
 415
 416         strlcpy(reason,r,MAXBUF-1);
 417
 418         if (strlen(reason)>MAXQUIT)
 419         {
 420                 reason[MAXQUIT-1] = '\0';
 421         }
 422
 423         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
 424         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
 425         log(DEBUG,"closing fd %d",user->fd);
 426
 427         if (user->registered == 7) {
 428                 purge_empty_chans(user);
 429                 FOREACH_MOD(I_OnUserQuit,OnUserQuit(user,reason));
 430                 WriteCommonExcept(user,"QUIT :%s",reason);
 431         }
 432
 433         user->FlushWriteBuf();
 434
 435         FOREACH_MOD(I_OnUserDisconnect,OnUserDisconnect(user));
 436
 437         if (user->fd > -1)
 438         {
 439                 if (Config->GetIOHook(user->port))
 440                 {
 441                         try
 442                         {
 443                                 Config->GetIOHook(user->port)->OnRawSocketClose(user->fd);
 444                         }
 445                         catch (ModuleException& modexcept)
 446                         {
 447                                 log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
 448                         }
 449                 }
 450                 ServerInstance->SE->DelFd(user->fd);
 451                 user->CloseSocket();
 452         }
 453
 454         // this must come before the WriteOpers so that it doesnt try to fill their buffer with anything
 455         // if they were an oper with +s.
 456         if (user->registered == 7) {
 457                 // fix by brain: only show local quits because we only show local connects (it just makes SENSE)
 458                 if (user->fd > -1)
 459                         WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
 460                 AddWhoWas(user);
 461         }
 462
 463         if (iter != clientlist.end())
 464         {
 465                 log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
 466                 if (user->fd > -1)
 467                 {
 468                         fd_ref_table[user->fd] = NULL;
 469                         if (find(local_users.begin(),local_users.end(),user) != local_users.end())
 470                         {
 471                                 local_users.erase(find(local_users.begin(),local_users.end(),user));
 472                                 log(DEBUG,"Delete local user");
 473                         }
 474                 }
 475                 clientlist.erase(iter);
 476         }
 477         delete user;
 478 }
 479
 480 /* adds or updates an entry in the whowas list */
 481 void AddWhoWas(userrec* u)
 482 {
 483         whowas_hash::iterator iter = whowas.find(u->nick);
 484         WhoWasUser *a = new WhoWasUser();
 485         strlcpy(a->nick,u->nick,NICKMAX-1);
 486         strlcpy(a->ident,u->ident,IDENTMAX);
 487         strlcpy(a->dhost,u->dhost,63);
 488         strlcpy(a->host,u->host,63);
 489         strlcpy(a->fullname,u->fullname,MAXGECOS);
 490         if (u->server)
 491                 strlcpy(a->server,u->server,256);
 492         a->signon = u->signon;
 493
 494         /* MAX_WHOWAS:   max number of /WHOWAS items
 495          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
 496          *               can be replaced by a newer one
 497          */
 498
 499         if (iter == whowas.end())
 500         {
 501                 if (whowas.size() >= (unsigned)WHOWAS_MAX)
 502                 {
 503                         for (whowas_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
 504                         {
 505                                 // 3600 seconds in an hour ;)
 506                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
 507                                 {
 508                                         // delete an old one
 509                                         if (i->second) delete i->second;
 510                                         whowas.erase(i);
 511                                         // replace with new one
 512                                         whowas[a->nick] = a;
 513                                         log(DEBUG,"added WHOWAS entry, purged an old record");
 514                                         return;
 515                                 }
 516                         }
 517                         // no space left and user doesnt exist. Don't leave ram in use!
 518                         delete a;
 519                 }
 520                 else
 521                 {
 522                         log(DEBUG,"added fresh WHOWAS entry");
 523                         whowas[a->nick] = a;
 524                 }
 525         }
 526         else
 527         {
 528                 log(DEBUG,"updated WHOWAS entry");
 529                 if (iter->second) delete iter->second;
 530                 iter->second = a;
 531         }
 532 }
 533
 534 /* add a client connection to the sockets list */
 535 void AddClient(int socket, int port, bool iscached, in_addr ip4)
 536 {
 537         std::string tempnick = ConvToStr(socket) + "-unknown";
 538         user_hash::iterator iter = clientlist.find(tempnick);
 539         const char *ipaddr = inet_ntoa(ip4);
 540         int j = 0;
 541
 542         // fix by brain.
 543         // as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 544         // using one as a registered connection. As theyre per fd, we can also safely assume
 545         // that we wont have collisions. Therefore, if the nick exists in the list, its only
 546         // used by a dead socket, erase the iterator so that the new client may reclaim it.
 547         // this was probably the cause of 'server ignores me when i hammer it with reconnects'
 548         // issue in earlier alphas/betas
 549         if (iter != clientlist.end())
 550         {
 551                 userrec* goner = iter->second;
 552                 delete goner;
 553                 clientlist.erase(iter);
 554         }
 555
 556         log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
 557
 558         clientlist[tempnick] = new userrec();
 559         clientlist[tempnick]->fd = socket;
 560         strlcpy(clientlist[tempnick]->nick,tempnick.c_str(),NICKMAX-1);
 561
 562         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
 563         for (char* temp = (char*)ipaddr; *temp && j < 64; temp++, j++)
 564                 clientlist[tempnick]->dhost[j] = clientlist[tempnick]->host[j] = *temp;
 565         clientlist[tempnick]->dhost[j] = clientlist[tempnick]->host[j] = 0;
 566
 567         clientlist[tempnick]->server = (char*)FindServerNamePtr(Config->ServerName);
 568         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
 569         strcpy(clientlist[tempnick]->ident, "unknown");
 570
 571         clientlist[tempnick]->registered = 0;
 572         clientlist[tempnick]->signon = TIME + Config->dns_timeout;
 573         clientlist[tempnick]->lastping = 1;
 574         clientlist[tempnick]->ip4 = ip4;
 575         clientlist[tempnick]->port = port;
 576
 577         // set the registration timeout for this user
 578         unsigned long class_regtimeout = 90;
 579         int class_flood = 0;
 580         long class_threshold = 5;
 581         long class_sqmax = 262144;      // 256kb
 582         long class_rqmax = 4096;        // 4k
 583
 584         for (ClassVector::iterator i = Config->Classes.begin(); i != Config->Classes.end(); i++)
 585         {
 586                 if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str())))
 587                 {
 588                         class_regtimeout = (unsigned long)i->registration_timeout;
 589                         class_flood = i->flood;
 590                         clientlist[tempnick]->pingmax = i->pingtime;
 591                         class_threshold = i->threshold;
 592                         class_sqmax = i->sendqmax;
 593                         class_rqmax = i->recvqmax;
 594                         break;
 595                 }
 596         }
 597
 598         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax + Config->dns_timeout;
 599         clientlist[tempnick]->timeout = TIME+class_regtimeout;
 600         clientlist[tempnick]->flood = class_flood;
 601         clientlist[tempnick]->threshold = class_threshold;
 602         clientlist[tempnick]->sendqmax = class_sqmax;
 603         clientlist[tempnick]->recvqmax = class_rqmax;
 604
 605         ucrec a;
 606         a.channel = NULL;
 607         a.uc_modes = 0;
 608         for (int i = 0; i < MAXCHANS; i++)
 609                 clientlist[tempnick]->chans.push_back(a);
 610
 611         fd_ref_table[socket] = clientlist[tempnick];
 612         local_users.push_back(clientlist[tempnick]);
 613
 614         if (local_users.size() > Config->SoftLimit)
 615         {
 616                 kill_link(clientlist[tempnick],"No more connections allowed");
 617                 return;
 618         }
 619
 620         if (local_users.size() >= MAXCLIENTS)
 621         {
 622                 kill_link(clientlist[tempnick],"No more connections allowed");
 623                 return;
 624         }
 625
 626         // this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 627         // its a pretty big but for the moment valid assumption:
 628         // file descriptors are handed out starting at 0, and are recycled as theyre freed.
 629         // therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 630         // irc server at once (or the irc server otherwise initiating this many connections, files etc)
 631         // which for the time being is a physical impossibility (even the largest networks dont have more
 632         // than about 10,000 users on ONE server!)
 633         if ((unsigned)socket >= MAX_DESCRIPTORS)
 634         {
 635                 kill_link(clientlist[tempnick],"Server is full");
 636                 return;
 637         }
 638         char* e = matches_exception(ipaddr);
 639         if (!e)
 640         {
 641                 char* r = matches_zline(ipaddr);
 642                 if (r)
 643                 {
 644                         char reason[MAXBUF];
 645                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
 646                         kill_link(clientlist[tempnick],reason);
 647                         return;
 648                 }
 649         }
 650
 651         ServerInstance->SE->AddFd(socket,true,X_ESTAB_CLIENT);
 652
 653         WriteServ(clientlist[tempnick]->fd,"NOTICE Auth :*** Looking up your hostname...");
 654 }
 655
 656 long FindMatchingGlobal(userrec* user)
 657 {
 658         long x = 0;
 659         for (user_hash::const_iterator a = clientlist.begin(); a != clientlist.end(); a++)
 660         {
 661                 if (a->second->ip4.s_addr == user->ip4.s_addr)
 662                         x++;
 663         }
 664         return x;
 665 }
 666
 667 long FindMatchingLocal(userrec* user)
 668 {
 669         long x = 0;
 670         for (std::vector<userrec*>::const_iterator a = local_users.begin(); a != local_users.end(); a++)
 671         {
 672                 userrec* comp = (userrec*)(*a);
 673                 if (comp->ip4.s_addr == user->ip4.s_addr)
 674                         x++;
 675         }
 676         return x;
 677 }
 678
 679 void FullConnectUser(userrec* user, CullList* Goners)
 680 {
 681         ServerInstance->stats->statsConnects++;
 682         user->idle_lastmsg = TIME;
 683         log(DEBUG,"ConnectUser: %s",user->nick);
 684
 685         ConnectClass a = GetClass(user);
 686
 687         if (a.type == CC_DENY)
 688         {
 689                 Goners->AddItem(user,"Unauthorised connection");
 690                 return;
 691         }
 692         if ((*(a.pass.c_str())) && (!user->haspassed))
 693         {
 694                 Goners->AddItem(user,"Invalid password");
 695                 return;
 696         }
 697         if (FindMatchingLocal(user) > a.maxlocal)
 698         {
 699                 Goners->AddItem(user,"No more connections allowed from your host via this connect class (local)");
 700                 WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s",a.maxlocal,(char*)inet_ntoa(user->ip4));
 701                 return;
 702         }
 703         else if (FindMatchingGlobal(user) > a.maxglobal)
 704         {
 705                 Goners->AddItem(user,"No more connections allowed from your host via this connect class (global)");
 706                 WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a.maxglobal,(char*)inet_ntoa(user->ip4));
 707                 return;
 708         }
 709
 710         char match_against[MAXBUF];
 711         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
 712         char* e = matches_exception(match_against);
 713         if (!e)
 714         {
 715                 char* r = matches_gline(match_against);
 716                 if (r)
 717                 {
 718                         char reason[MAXBUF];
 719                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
 720                         Goners->AddItem(user,reason);
 721                         return;
 722                 }
 723                 r = matches_kline(user->host);
 724                 if (r)
 725                 {
 726                         char reason[MAXBUF];
 727                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
 728                         Goners->AddItem(user,reason);
 729                         return;
 730                 }
 731         }
 732
 733
 734         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Config->Network);
 735         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Config->Network,user->nick,user->ident,user->host);
 736         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,Config->ServerName,VERSION);
 737         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
 738         WriteServ(user->fd,"004 %s %s %s iowghrasxRVSCWBG lvhopsmntikrcaqbegIOLQRSKVHGCNT vhobeIaqglk",user->nick,Config->ServerName,VERSION);
 739         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
 740         // so i'd better split it :)
 741         std::stringstream out(Config->data005);
 742         std::string token = "";
 743         std::string line5 = "";
 744         int token_counter = 0;
 745         while (!out.eof())
 746         {
 747                 out >> token;
 748                 line5 = line5 + token + " ";
 749                 token_counter++;
 750                 if ((token_counter >= 13) || (out.eof() == true))
 751                 {
 752                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
 753                         line5 = "";
 754                         token_counter = 0;
 755                 }
 756         }
 757         ShowMOTD(user);
 758
 759         // fix 3 by brain, move registered = 7 below these so that spurious modes and host changes dont go out
 760         // onto the network and produce 'fake direction'
 761         FOREACH_MOD(I_OnUserConnect,OnUserConnect(user));
 762         FOREACH_MOD(I_OnGlobalConnect,OnGlobalConnect(user));
 763         user->registered = 7;
 764         WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,(char*)inet_ntoa(user->ip4));
 765 }
 766
 767 /* re-allocates a nick in the user_hash after they change nicknames,
 768  * returns a pointer to the new user as it may have moved */
 769
 770 userrec* ReHashNick(char* Old, char* New)
 771 {
 772         //user_hash::iterator newnick;
 773         user_hash::iterator oldnick = clientlist.find(Old);
 774
 775         log(DEBUG,"ReHashNick: %s %s",Old,New);
 776
 777         if (!strcasecmp(Old,New))
 778         {
 779                 log(DEBUG,"old nick is new nick, skipping");
 780                 return oldnick->second;
 781         }
 782
 783         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
 784
 785         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
 786
 787         userrec* olduser = oldnick->second;
 788         clientlist[New] = olduser;
 789         clientlist.erase(oldnick);
 790
 791         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
 792
 793         return clientlist[New];
 794 }
 795
 796 void force_nickchange(userrec* user,const char* newnick)
 797 {
 798         char nick[MAXBUF];
 799         int MOD_RESULT = 0;
 800
 801         *nick = 0;
 802
 803         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(user,newnick));
 804         if (MOD_RESULT) {
 805                 ServerInstance->stats->statsCollisions++;
 806                 kill_link(user,"Nickname collision");
 807                 return;
 808         }
 809         if (matches_qline(newnick))
 810         {
 811                 ServerInstance->stats->statsCollisions++;
 812                 kill_link(user,"Nickname collision");
 813                 return;
 814         }
 815
 816         if (user)
 817         {
 818                 if (newnick)
 819                 {
 820                         strlcpy(nick,newnick,MAXBUF-1);
 821                 }
 822                 if (user->registered == 7)
 823                 {
 824                         char* pars[1];
 825                         pars[0] = nick;
 826                         std::string cmd = "NICK";
 827                         ServerInstance->Parser->CallHandler(cmd,pars,1,user);
 828                 }
 829         }
 830 }
 831