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