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
  53 whowas_users whowas;
  54
  55 extern std::vector<userrec*> local_users;
  56
  57 std::vector<userrec*> all_opers;
  58
  59 typedef std::map<irc::string,char*> opertype_t;
  60 typedef opertype_t operclass_t;
  61
  62 opertype_t opertypes;
  63 operclass_t operclass;
  64
  65 bool InitTypes(const char* tag)
  66 {
  67         for (opertype_t::iterator n = opertypes.begin(); n != opertypes.end(); n++)
  68         {
  69                 if (n->second)
  70                         delete[] n->second;
  71         }
  72         opertypes.clear();
  73         return true;
  74 }
  75
  76 bool InitClasses(const char* tag)
  77 {
  78         for (operclass_t::iterator n = operclass.begin(); n != operclass.end(); n++)
  79         {
  80                 if (n->second)
  81                         delete[] n->second;
  82         }
  83         operclass.clear();
  84         return true;
  85 }
  86
  87 bool DoType(const char* tag, char** entries, void** values, int* types)
  88 {
  89         char* TypeName = (char*)values[0];
  90         char* Classes = (char*)values[1];
  91         opertypes[TypeName] = strdup(Classes);
  92         log(DEBUG,"Read oper TYPE '%s' with classes '%s'",TypeName,Classes);
  93         return true;
  94 }
  95
  96 bool DoClass(const char* tag, char** entries, void** values, int* types)
  97 {
  98         char* ClassName = (char*)values[0];
  99         char* CommandList = (char*)values[1];
 100         operclass[ClassName] = strdup(CommandList);
 101         log(DEBUG,"Read oper CLASS '%s' with commands '%s'",ClassName,CommandList);
 102         return true;
 103 }
 104
 105 bool DoneClassesAndTypes(const char* tag)
 106 {
 107         return true;
 108 }
 109
 110 userrec::userrec()
 111 {
 112         // the PROPER way to do it, AVOID bzero at *ALL* costs
 113         *password = *nick = *ident = *host = *dhost = *fullname = *modes = *awaymsg = *oper = 0;
 114         server = (char*)FindServerNamePtr(Config->ServerName);
 115         reset_due = TIME;
 116         lines_in = fd = lastping = signon = idle_lastmsg = nping = registered = 0;
 117         modebits = timeout = flood = port = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 118         haspassed = dns_done = false;
 119         recvq = "";
 120         sendq = "";
 121         chans.clear();
 122         invites.clear();
 123         chans.resize(MAXCHANS);
 124         for (unsigned int n = 0; n < MAXCHANS; n++)
 125         {
 126                 ucrec* x = new ucrec();
 127                 chans[n] = x;
 128                 x->channel = NULL;
 129                 x->uc_modes = 0;
 130         }
 131 }
 132
 133 userrec::~userrec()
 134 {
 135         for (std::vector<ucrec*>::iterator n = chans.begin(); n != chans.end(); n++)
 136         {
 137                 ucrec* x = (ucrec*)*n;
 138                 delete x;
 139         }
 140 }
 141
 142 void userrec::MakeHost(char* nhost)
 143 {
 144         /* This is much faster than snprintf */
 145         char* t = nhost;
 146         for(char* n = ident; *n; n++)
 147                 *t++ = *n;
 148         *t++ = '@';
 149         for(char* n = host; *n; n++)
 150                 *t++ = *n;
 151         *t = 0;
 152 }
 153
 154 void userrec::CloseSocket()
 155 {
 156         shutdown(this->fd,2);
 157         close(this->fd);
 158 }
 159
 160 char* userrec::GetFullHost()
 161 {
 162         static char result[MAXBUF];
 163         char* t = result;
 164         for(char* n = nick; *n; n++)
 165                 *t++ = *n;
 166         *t++ = '!';
 167         for(char* n = ident; *n; n++)
 168                 *t++ = *n;
 169         *t++ = '@';
 170         for(char* n = dhost; *n; n++)
 171                 *t++ = *n;
 172         *t = 0;
 173         return result;
 174 }
 175
 176 char* userrec::MakeWildHost()
 177 {
 178         static char nresult[MAXBUF];
 179         char* t = nresult;
 180         *t++ = '*';     *t++ = '!';
 181         *t++ = '*';     *t++ = '@';
 182         for(char* n = dhost; *n; n++)
 183                 *t++ = *n;
 184         *t = 0;
 185         return nresult;
 186 }
 187
 188 int userrec::ReadData(void* buffer, size_t size)
 189 {
 190         if (this->fd > -1)
 191         {
 192                 return read(this->fd, buffer, size);
 193         }
 194         else return 0;
 195 }
 196
 197
 198 char* userrec::GetFullRealHost()
 199 {
 200         static char fresult[MAXBUF];
 201         char* t = fresult;
 202         for(char* n = nick; *n; n++)
 203                 *t++ = *n;
 204         *t++ = '!';
 205         for(char* n = ident; *n; n++)
 206                 *t++ = *n;
 207         *t++ = '@';
 208         for(char* n = host; *n; n++)
 209                 *t++ = *n;
 210         *t = 0;
 211         return fresult;
 212 }
 213
 214 bool userrec::IsInvited(irc::string &channel)
 215 {
 216         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 217         {
 218                 irc::string compare = i->channel;
 219                 if (compare == channel)
 220                 {
 221                         return true;
 222                 }
 223         }
 224         return false;
 225 }
 226
 227 InvitedList* userrec::GetInviteList()
 228 {
 229         return &invites;
 230 }
 231
 232 void userrec::InviteTo(irc::string &channel)
 233 {
 234         Invited i;
 235         i.channel = channel;
 236         invites.push_back(i);
 237 }
 238
 239 void userrec::RemoveInvite(irc::string &channel)
 240 {
 241         log(DEBUG,"Removing invites");
 242         if (invites.size())
 243         {
 244                 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 245                 {
 246                         irc::string compare = i->channel;
 247                         if (compare == channel)
 248                         {
 249                                 invites.erase(i);
 250                                 return;
 251                         }
 252                 }
 253         }
 254 }
 255
 256 bool userrec::HasPermission(const std::string &command)
 257 {
 258         char* mycmd;
 259         char* savept;
 260         char* savept2;
 261
 262         // users on remote servers can completely bypass
 263         // all permissions based checks.
 264         // This prevents desyncs when one server has different
 265         // type/class tags to another.
 266         if (!IS_LOCAL(this))
 267                 return true;
 268
 269         // are they even an oper at all?
 270         if (*this->oper)
 271         {
 272                 opertype_t::iterator iter_opertype = opertypes.find(this->oper);
 273                 if (iter_opertype != opertypes.end())
 274                 {
 275                         char* Classes = strdup(iter_opertype->second);
 276                         char* myclass = strtok_r(Classes," ",&savept);
 277                         while (myclass)
 278                         {
 279                                 operclass_t::iterator iter_operclass = operclass.find(myclass);
 280                                 if (iter_operclass != operclass.end())
 281                                 {
 282                                         char* CommandList = strdup(iter_operclass->second);
 283                                         mycmd = strtok_r(CommandList," ",&savept2);
 284                                         while (mycmd)
 285                                         {
 286                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 287                                                 {
 288                                                         free(Classes);
 289                                                         free(CommandList);
 290                                                         return true;
 291                                                 }
 292                                                 mycmd = strtok_r(NULL," ",&savept2);
 293                                         }
 294                                         free(CommandList);
 295                                 }
 296                                 myclass = strtok_r(NULL," ",&savept);
 297                         }
 298                         free(Classes);
 299                 }
 300         }
 301         return false;
 302 }
 303
 304
 305 bool userrec::AddBuffer(const std::string &a)
 306 {
 307         std::string b = "";
 308         char* n = (char*)a.c_str();
 309         for (char* i = n; *i; i++)
 310         {
 311                 if ((*i != '\r') && (*i != '\0') && (*i != 7))
 312                         b = b + *i;
 313         }
 314         recvq.append(b);
 315         unsigned int i = 0;
 316         // count the size of the first line in the buffer.
 317         while (i < recvq.length())
 318         {
 319                 if (recvq[i++] == '\n')
 320                         break;
 321         }
 322         if (recvq.length() > (unsigned)this->recvqmax)
 323         {
 324                 this->SetWriteError("RecvQ exceeded");
 325                 WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 326         }
 327         // return false if we've had more than 600 characters WITHOUT
 328         // a carriage return (this is BAD, drop the socket)
 329         return (i < 600);
 330 }
 331
 332 bool userrec::BufferIsReady()
 333 {
 334         unsigned int t = recvq.length();
 335         for (unsigned int i = 0; i < t; i++)
 336                 if (recvq[i] == '\n')
 337                         return true;
 338         return false;
 339 }
 340
 341 void userrec::ClearBuffer()
 342 {
 343         recvq = "";
 344 }
 345
 346 std::string userrec::GetBuffer()
 347 {
 348         if (recvq == "")
 349                 return "";
 350         char* line = (char*)recvq.c_str();
 351         std::string ret = "";
 352         while ((*line != '\n') && (*line))
 353         {
 354                 ret = ret + *line;
 355                 line++;
 356         }
 357         while ((*line == '\n') || (*line == '\r'))
 358                 line++;
 359         recvq = line;
 360         return ret;
 361 }
 362
 363 void userrec::AddWriteBuf(const std::string &data)
 364 {
 365         if (*this->GetWriteError())
 366                 return;
 367         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 368         {
 369                 /* Fix by brain - Set the error text BEFORE calling writeopers, because
 370                  * if we dont it'll recursively  call here over and over again trying
 371                  * to repeatedly add the text to the sendq!
 372                  */
 373                 this->SetWriteError("SendQ exceeded");
 374                 WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 375                 return;
 376         }
 377         std::stringstream stream;
 378         stream << sendq << data;
 379         sendq = stream.str();
 380 }
 381
 382 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 383 void userrec::FlushWriteBuf()
 384 {
 385         if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 386         {
 387                 char* tb = (char*)this->sendq.c_str();
 388                 int n_sent = write(this->fd,tb,this->sendq.length());
 389                 if (n_sent == -1)
 390                 {
 391                         this->SetWriteError(strerror(errno));
 392                 }
 393                 else
 394                 {
 395                         // advance the queue
 396                         tb += n_sent;
 397                         this->sendq = tb;
 398                         // update the user's stats counters
 399                         this->bytes_out += n_sent;
 400                         this->cmds_out++;
 401                 }
 402         }
 403 }
 404
 405 void userrec::SetWriteError(const std::string &error)
 406 {
 407         log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 408         // don't try to set the error twice, its already set take the first string.
 409         if (this->WriteError == "")
 410                 this->WriteError = error;
 411 }
 412
 413 const char* userrec::GetWriteError()
 414 {
 415         return this->WriteError.c_str();
 416 }
 417
 418 void AddOper(userrec* user)
 419 {
 420         log(DEBUG,"Oper added to optimization list");
 421         all_opers.push_back(user);
 422 }
 423
 424 void DeleteOper(userrec* user)
 425 {
 426         for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 427         {
 428                 if (*a == user)
 429                 {
 430                         log(DEBUG,"Oper removed from optimization list");
 431                         all_opers.erase(a);
 432                         return;
 433                 }
 434         }
 435 }
 436
 437 void kill_link(userrec *user,const char* r)
 438 {
 439         user_hash::iterator iter = clientlist.find(user->nick);
 440         if (iter == clientlist.end())
 441                 return;
 442
 443         char reason[MAXBUF];
 444
 445         strlcpy(reason,r,MAXQUIT-1);
 446
 447         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
 448         if (IS_LOCAL(user))
 449                 Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
 450
 451         if (user->registered == 7) {
 452                 purge_empty_chans(user);
 453                 FOREACH_MOD(I_OnUserQuit,OnUserQuit(user,reason));
 454                 WriteCommonExcept(user,"QUIT :%s",reason);
 455         }
 456
 457         user->FlushWriteBuf();
 458
 459         FOREACH_MOD(I_OnUserDisconnect,OnUserDisconnect(user));
 460
 461         if (IS_LOCAL(user))
 462         {
 463                 if (Config->GetIOHook(user->port))
 464                 {
 465                         try
 466                         {
 467                                 Config->GetIOHook(user->port)->OnRawSocketClose(user->fd);
 468                         }
 469                         catch (ModuleException& modexcept)
 470                         {
 471                                 log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
 472                         }
 473                 }
 474                 ServerInstance->SE->DelFd(user->fd);
 475                 user->CloseSocket();
 476         }
 477
 478         // this must come before the WriteOpers so that it doesnt try to fill their buffer with anything
 479         // if they were an oper with +s.
 480         if (user->registered == 7) {
 481                 // fix by brain: only show local quits because we only show local connects (it just makes SENSE)
 482                 if (IS_LOCAL(user))
 483                         WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
 484                 AddWhoWas(user);
 485         }
 486
 487         if (iter != clientlist.end())
 488         {
 489                 log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
 490                 if (IS_LOCAL(user))
 491                 {
 492                         fd_ref_table[user->fd] = NULL;
 493                         if (find(local_users.begin(),local_users.end(),user) != local_users.end())
 494                         {
 495                                 local_users.erase(find(local_users.begin(),local_users.end(),user));
 496                                 log(DEBUG,"Delete local user");
 497                         }
 498                 }
 499                 clientlist.erase(iter);
 500                 delete user;
 501         }
 502 }
 503
 504 WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
 505 {
 506         this->host = strdup(user->host);
 507         this->dhost = strdup(user->dhost);
 508         this->ident = strdup(user->ident);
 509         this->server = user->server;
 510         this->gecos = strdup(user->fullname);
 511 }
 512
 513 WhoWasGroup::~WhoWasGroup()
 514 {
 515         if (host)
 516                 free(host);
 517         if (dhost)
 518                 free(dhost);
 519         if (ident)
 520                 free(ident);
 521         if (gecos)
 522                 free(gecos);
 523 }
 524
 525 /* adds or updates an entry in the whowas list */
 526 void AddWhoWas(userrec* u)
 527 {
 528         whowas_users::iterator iter = whowas.find(u->nick);
 529         if (iter == whowas.end())
 530         {
 531                 whowas_set* n = new whowas_set;
 532                 WhoWasGroup *a = new WhoWasGroup(u);
 533                 n->push_back(a);
 534                 whowas[u->nick] = n;
 535         }
 536         else
 537         {
 538                 whowas_set* group = (whowas_set*)iter->second;
 539                 if (group->size() > 10)
 540                 {
 541                         WhoWasGroup *a = (WhoWasGroup*)*(group->begin());
 542                         delete a;
 543                         group->pop_front();
 544                 }
 545                 WhoWasGroup *a = new WhoWasGroup(u);
 546                 group->push_back(a);
 547         }
 548 }
 549
 550 /* every hour, run this function which removes all entries over 3 days */
 551 void MaintainWhoWas(time_t TIME)
 552 {
 553         for (whowas_users::iterator iter = whowas.begin(); iter != whowas.end(); iter++)
 554         {
 555                 whowas_set* n = (whowas_set*)iter->second;
 556                 if (n->size())
 557                 {
 558                         while ((n->begin() != n->end()) && ((*n->begin())->signon < TIME - 259200)) // 3 days
 559                         {
 560                                 WhoWasGroup *a = *(n->begin());
 561                                 delete a;
 562                                 n->erase(n->begin());
 563                         }
 564                 }
 565         }
 566 }
 567
 568 /* add a client connection to the sockets list */
 569 void AddClient(int socket, int port, bool iscached, in_addr ip4)
 570 {
 571         std::string tempnick = ConvToStr(socket) + "-unknown";
 572         user_hash::iterator iter = clientlist.find(tempnick);
 573         const char *ipaddr = inet_ntoa(ip4);
 574         int j = 0;
 575
 576         // fix by brain.
 577         // as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 578         // using one as a registered connection. As theyre per fd, we can also safely assume
 579         // that we wont have collisions. Therefore, if the nick exists in the list, its only
 580         // used by a dead socket, erase the iterator so that the new client may reclaim it.
 581         // this was probably the cause of 'server ignores me when i hammer it with reconnects'
 582         // issue in earlier alphas/betas
 583         if (iter != clientlist.end())
 584         {
 585                 userrec* goner = iter->second;
 586                 delete goner;
 587                 clientlist.erase(iter);
 588         }
 589
 590         log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
 591
 592         clientlist[tempnick] = new userrec();
 593         clientlist[tempnick]->fd = socket;
 594         strlcpy(clientlist[tempnick]->nick,tempnick.c_str(),NICKMAX-1);
 595
 596         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
 597         for (char* temp = (char*)ipaddr; *temp && j < 64; temp++, j++)
 598                 clientlist[tempnick]->dhost[j] = clientlist[tempnick]->host[j] = *temp;
 599         clientlist[tempnick]->dhost[j] = clientlist[tempnick]->host[j] = 0;
 600
 601         clientlist[tempnick]->server = (char*)FindServerNamePtr(Config->ServerName);
 602         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
 603         strcpy(clientlist[tempnick]->ident, "unknown");
 604
 605         clientlist[tempnick]->registered = 0;
 606         clientlist[tempnick]->signon = TIME + Config->dns_timeout;
 607         clientlist[tempnick]->lastping = 1;
 608         clientlist[tempnick]->ip4 = ip4;
 609         clientlist[tempnick]->port = port;
 610
 611         // set the registration timeout for this user
 612         unsigned long class_regtimeout = 90;
 613         int class_flood = 0;
 614         long class_threshold = 5;
 615         long class_sqmax = 262144;      // 256kb
 616         long class_rqmax = 4096;        // 4k
 617
 618         for (ClassVector::iterator i = Config->Classes.begin(); i != Config->Classes.end(); i++)
 619         {
 620                 if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str())))
 621                 {
 622                         class_regtimeout = (unsigned long)i->registration_timeout;
 623                         class_flood = i->flood;
 624                         clientlist[tempnick]->pingmax = i->pingtime;
 625                         class_threshold = i->threshold;
 626                         class_sqmax = i->sendqmax;
 627                         class_rqmax = i->recvqmax;
 628                         break;
 629                 }
 630         }
 631
 632         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax + Config->dns_timeout;
 633         clientlist[tempnick]->timeout = TIME+class_regtimeout;
 634         clientlist[tempnick]->flood = class_flood;
 635         clientlist[tempnick]->threshold = class_threshold;
 636         clientlist[tempnick]->sendqmax = class_sqmax;
 637         clientlist[tempnick]->recvqmax = class_rqmax;
 638
 639         fd_ref_table[socket] = clientlist[tempnick];
 640         local_users.push_back(clientlist[tempnick]);
 641
 642         if (local_users.size() > Config->SoftLimit)
 643         {
 644                 kill_link(clientlist[tempnick],"No more connections allowed");
 645                 return;
 646         }
 647
 648         if (local_users.size() >= MAXCLIENTS)
 649         {
 650                 kill_link(clientlist[tempnick],"No more connections allowed");
 651                 return;
 652         }
 653
 654         // this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 655         // its a pretty big but for the moment valid assumption:
 656         // file descriptors are handed out starting at 0, and are recycled as theyre freed.
 657         // therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 658         // irc server at once (or the irc server otherwise initiating this many connections, files etc)
 659         // which for the time being is a physical impossibility (even the largest networks dont have more
 660         // than about 10,000 users on ONE server!)
 661         if ((unsigned)socket >= MAX_DESCRIPTORS)
 662         {
 663                 kill_link(clientlist[tempnick],"Server is full");
 664                 return;
 665         }
 666         char* e = matches_exception(ipaddr);
 667         if (!e)
 668         {
 669                 char* r = matches_zline(ipaddr);
 670                 if (r)
 671                 {
 672                         char reason[MAXBUF];
 673                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
 674                         kill_link(clientlist[tempnick],reason);
 675                         return;
 676                 }
 677         }
 678
 679         ServerInstance->SE->AddFd(socket,true,X_ESTAB_CLIENT);
 680
 681         WriteServ(clientlist[tempnick]->fd,"NOTICE Auth :*** Looking up your hostname...");
 682 }
 683
 684 long FindMatchingGlobal(userrec* user)
 685 {
 686         long x = 0;
 687         for (user_hash::const_iterator a = clientlist.begin(); a != clientlist.end(); a++)
 688         {
 689                 if (a->second->ip4.s_addr == user->ip4.s_addr)
 690                         x++;
 691         }
 692         return x;
 693 }
 694
 695 long FindMatchingLocal(userrec* user)
 696 {
 697         long x = 0;
 698         for (std::vector<userrec*>::const_iterator a = local_users.begin(); a != local_users.end(); a++)
 699         {
 700                 userrec* comp = (userrec*)(*a);
 701                 if (comp->ip4.s_addr == user->ip4.s_addr)
 702                         x++;
 703         }
 704         return x;
 705 }
 706
 707 void FullConnectUser(userrec* user, CullList* Goners)
 708 {
 709         ServerInstance->stats->statsConnects++;
 710         user->idle_lastmsg = TIME;
 711         log(DEBUG,"ConnectUser: %s",user->nick);
 712
 713         ConnectClass a = GetClass(user);
 714
 715         if (a.type == CC_DENY)
 716         {
 717                 Goners->AddItem(user,"Unauthorised connection");
 718                 return;
 719         }
 720         if ((*(a.pass.c_str())) && (!user->haspassed))
 721         {
 722                 Goners->AddItem(user,"Invalid password");
 723                 return;
 724         }
 725         if (FindMatchingLocal(user) > a.maxlocal)
 726         {
 727                 Goners->AddItem(user,"No more connections allowed from your host via this connect class (local)");
 728                 WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s",a.maxlocal,(char*)inet_ntoa(user->ip4));
 729                 return;
 730         }
 731         else if (FindMatchingGlobal(user) > a.maxglobal)
 732         {
 733                 Goners->AddItem(user,"No more connections allowed from your host via this connect class (global)");
 734                 WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a.maxglobal,(char*)inet_ntoa(user->ip4));
 735                 return;
 736         }
 737
 738         char match_against[MAXBUF];
 739         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
 740         char* e = matches_exception(match_against);
 741         if (!e)
 742         {
 743                 char* r = matches_gline(match_against);
 744                 if (r)
 745                 {
 746                         char reason[MAXBUF];
 747                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
 748                         Goners->AddItem(user,reason);
 749                         return;
 750                 }
 751                 r = matches_kline(user->host);
 752                 if (r)
 753                 {
 754                         char reason[MAXBUF];
 755                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
 756                         Goners->AddItem(user,reason);
 757                         return;
 758                 }
 759         }
 760
 761
 762         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Config->Network);
 763         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Config->Network,user->nick,user->ident,user->host);
 764         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,Config->ServerName,VERSION);
 765         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
 766         WriteServ(user->fd,"004 %s %s %s iowghrasxRVSCWBG lvhopsmntikrcaqbegIOLQRSKVHGCNT vhobeIaqglk",user->nick,Config->ServerName,VERSION);
 767         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
 768         // so i'd better split it :)
 769         std::stringstream out(Config->data005);
 770         std::string token = "";
 771         std::string line5 = "";
 772         int token_counter = 0;
 773         while (!out.eof())
 774         {
 775                 out >> token;
 776                 line5 = line5 + token + " ";
 777                 token_counter++;
 778                 if ((token_counter >= 13) || (out.eof() == true))
 779                 {
 780                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
 781                         line5 = "";
 782                         token_counter = 0;
 783                 }
 784         }
 785         ShowMOTD(user);
 786
 787         // fix 3 by brain, move registered = 7 below these so that spurious modes and host changes dont go out
 788         // onto the network and produce 'fake direction'
 789         FOREACH_MOD(I_OnUserConnect,OnUserConnect(user));
 790         FOREACH_MOD(I_OnGlobalConnect,OnGlobalConnect(user));
 791         user->registered = 7;
 792         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));
 793 }
 794
 795 /* re-allocates a nick in the user_hash after they change nicknames,
 796  * returns a pointer to the new user as it may have moved */
 797
 798 userrec* ReHashNick(char* Old, char* New)
 799 {
 800         //user_hash::iterator newnick;
 801         user_hash::iterator oldnick = clientlist.find(Old);
 802
 803         log(DEBUG,"ReHashNick: %s %s",Old,New);
 804
 805         if (!strcasecmp(Old,New))
 806         {
 807                 log(DEBUG,"old nick is new nick, skipping");
 808                 return oldnick->second;
 809         }
 810
 811         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
 812
 813         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
 814
 815         userrec* olduser = oldnick->second;
 816         clientlist[New] = olduser;
 817         clientlist.erase(oldnick);
 818
 819         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
 820
 821         return clientlist[New];
 822 }
 823
 824 void force_nickchange(userrec* user,const char* newnick)
 825 {
 826         char nick[MAXBUF];
 827         int MOD_RESULT = 0;
 828
 829         *nick = 0;
 830
 831         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(user,newnick));
 832         if (MOD_RESULT) {
 833                 ServerInstance->stats->statsCollisions++;
 834                 kill_link(user,"Nickname collision");
 835                 return;
 836         }
 837         if (matches_qline(newnick))
 838         {
 839                 ServerInstance->stats->statsCollisions++;
 840                 kill_link(user,"Nickname collision");
 841                 return;
 842         }
 843
 844         if (user)
 845         {
 846                 if (newnick)
 847                 {
 848                         strlcpy(nick,newnick,MAXBUF-1);
 849                 }
 850                 if (user->registered == 7)
 851                 {
 852                         char* pars[1];
 853                         pars[0] = nick;
 854                         std::string cmd = "NICK";
 855                         ServerInstance->Parser->CallHandler(cmd,pars,1,user);
 856                 }
 857         }
 858 }