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 = strdup(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 = strdup(iter_operclass->second);
 261                                         mycmd = strtok_r(CommandList," ",&savept2);
 262                                         while (mycmd)
 263                                         {
 264                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 265                                                 {
 266                                                         free(Classes);
 267                                                         free(CommandList);
 268                                                         return true;
 269                                                 }
 270                                                 mycmd = strtok_r(NULL," ",&savept2);
 271                                         }
 272                                         free(CommandList);
 273                                 }
 274                                 myclass = strtok_r(NULL," ",&savept);
 275                         }
 276                         free(Classes);
 277                 }
 278         }
 279         return false;
 280 }
 281
 282
 283 bool userrec::AddBuffer(std::string a)
 284 {
 285         std::string b = "";
 286         char* n = (char*)a.c_str();
 287         for (char* i = n; *i; i++)
 288         {
 289                 if ((*i != '\r') && (*i != '\0') && (*i != 7))
 290                         b = b + *i;
 291         }
 292         std::stringstream stream(recvq);
 293         stream << b;
 294         recvq = stream.str();
 295         unsigned int i = 0;
 296         // count the size of the first line in the buffer.
 297         while (i < recvq.length())
 298         {
 299                 if (recvq[i++] == '\n')
 300                         break;
 301         }
 302         if (recvq.length() > (unsigned)this->recvqmax)
 303         {
 304                 this->SetWriteError("RecvQ exceeded");
 305                 WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 306         }
 307         // return false if we've had more than 600 characters WITHOUT
 308         // a carriage return (this is BAD, drop the socket)
 309         return (i < 600);
 310 }
 311
 312 bool userrec::BufferIsReady()
 313 {
 314         unsigned int t = recvq.length();
 315         for (unsigned int i = 0; i < t; i++)
 316                 if (recvq[i] == '\n')
 317                         return true;
 318         return false;
 319 }
 320
 321 void userrec::ClearBuffer()
 322 {
 323         recvq = "";
 324 }
 325
 326 std::string userrec::GetBuffer()
 327 {
 328         if (recvq == "")
 329                 return "";
 330         char* line = (char*)recvq.c_str();
 331         std::string ret = "";
 332         while ((*line != '\n') && (*line))
 333         {
 334                 ret = ret + *line;
 335                 line++;
 336         }
 337         if ((*line == '\n') || (*line == '\r'))
 338                 line++;
 339         recvq = line;
 340         return ret;
 341 }
 342
 343 void userrec::AddWriteBuf(std::string data)
 344 {
 345         if (this->GetWriteError() != "")
 346                 return;
 347         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 348         {
 349                 /* Fix by brain - Set the error text BEFORE calling writeopers, because
 350                  * if we dont it'll recursively  call here over and over again trying
 351                  * to repeatedly add the text to the sendq!
 352                  */
 353                 this->SetWriteError("SendQ exceeded");
 354                 WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 355                 return;
 356         }
 357         std::stringstream stream;
 358         stream << sendq << data;
 359         sendq = stream.str();
 360 }
 361
 362 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 363 void userrec::FlushWriteBuf()
 364 {
 365         if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 366         {
 367                 char* tb = (char*)this->sendq.c_str();
 368                 int n_sent = write(this->fd,tb,this->sendq.length());
 369                 if (n_sent == -1)
 370                 {
 371                         this->SetWriteError(strerror(errno));
 372                 }
 373                 else
 374                 {
 375                         // advance the queue
 376                         tb += n_sent;
 377                         this->sendq = tb;
 378                         // update the user's stats counters
 379                         this->bytes_out += n_sent;
 380                         this->cmds_out++;
 381                 }
 382         }
 383 }
 384
 385 void userrec::SetWriteError(std::string error)
 386 {
 387         log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 388         // don't try to set the error twice, its already set take the first string.
 389         if (this->WriteError == "")
 390                 this->WriteError = error;
 391 }
 392
 393 std::string userrec::GetWriteError()
 394 {
 395         return this->WriteError;
 396 }
 397
 398 void AddOper(userrec* user)
 399 {
 400         log(DEBUG,"Oper added to optimization list");
 401         all_opers.push_back(user);
 402 }
 403
 404 void DeleteOper(userrec* user)
 405 {
 406         for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 407         {
 408                 if (*a == user)
 409                 {
 410                         log(DEBUG,"Oper removed from optimization list");
 411                         all_opers.erase(a);
 412                         return;
 413                 }
 414         }
 415 }
 416
 417 void kill_link(userrec *user,const char* r)
 418 {
 419         user_hash::iterator iter = clientlist.find(user->nick);
 420
 421         char reason[MAXBUF];
 422
 423         strlcpy(reason,r,MAXBUF-1);
 424
 425         if (strlen(reason)>MAXQUIT)
 426         {
 427                 reason[MAXQUIT-1] = '\0';
 428         }
 429
 430         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
 431         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
 432         log(DEBUG,"closing fd %d",user->fd);
 433
 434         if (user->registered == 7) {
 435                 purge_empty_chans(user);
 436                 FOREACH_MOD(I_OnUserQuit,OnUserQuit(user,reason));
 437                 WriteCommonExcept(user,"QUIT :%s",reason);
 438         }
 439
 440         user->FlushWriteBuf();
 441
 442         FOREACH_MOD(I_OnUserDisconnect,OnUserDisconnect(user));
 443
 444         if (user->fd > -1)
 445         {
 446                 if (Config->GetIOHook(user->port))
 447                 {
 448                         try
 449                         {
 450                                 Config->GetIOHook(user->port)->OnRawSocketClose(user->fd);
 451                         }
 452                         catch (ModuleException& modexcept)
 453                         {
 454                                 log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
 455                         }
 456                 }
 457                 ServerInstance->SE->DelFd(user->fd);
 458                 user->CloseSocket();
 459         }
 460
 461         // this must come before the WriteOpers so that it doesnt try to fill their buffer with anything
 462         // if they were an oper with +s.
 463         if (user->registered == 7) {
 464                 // fix by brain: only show local quits because we only show local connects (it just makes SENSE)
 465                 if (user->fd > -1)
 466                         WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
 467                 AddWhoWas(user);
 468         }
 469
 470         if (iter != clientlist.end())
 471         {
 472                 log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
 473                 if (user->fd > -1)
 474                 {
 475                         fd_ref_table[user->fd] = NULL;
 476                         if (find(local_users.begin(),local_users.end(),user) != local_users.end())
 477                         {
 478                                 local_users.erase(find(local_users.begin(),local_users.end(),user));
 479                                 log(DEBUG,"Delete local user");
 480                         }
 481                 }
 482                 clientlist.erase(iter);
 483         }
 484         delete user;
 485 }
 486
 487 /* adds or updates an entry in the whowas list */
 488 void AddWhoWas(userrec* u)
 489 {
 490         whowas_hash::iterator iter = whowas.find(u->nick);
 491         WhoWasUser *a = new WhoWasUser();
 492         strlcpy(a->nick,u->nick,NICKMAX-1);
 493         strlcpy(a->ident,u->ident,IDENTMAX);
 494         strlcpy(a->dhost,u->dhost,63);
 495         strlcpy(a->host,u->host,63);
 496         strlcpy(a->fullname,u->fullname,MAXGECOS);
 497         if (u->server)
 498                 strlcpy(a->server,u->server,256);
 499         a->signon = u->signon;
 500
 501         /* MAX_WHOWAS:   max number of /WHOWAS items
 502          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
 503          *               can be replaced by a newer one
 504          */
 505
 506         if (iter == whowas.end())
 507         {
 508                 if (whowas.size() >= (unsigned)WHOWAS_MAX)
 509                 {
 510                         for (whowas_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
 511                         {
 512                                 // 3600 seconds in an hour ;)
 513                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
 514                                 {
 515                                         // delete an old one
 516                                         if (i->second) delete i->second;
 517                                         whowas.erase(i);
 518                                         // replace with new one
 519                                         whowas[a->nick] = a;
 520                                         log(DEBUG,"added WHOWAS entry, purged an old record");
 521                                         return;
 522                                 }
 523                         }
 524                         // no space left and user doesnt exist. Don't leave ram in use!
 525                         delete a;
 526                 }
 527                 else
 528                 {
 529                         log(DEBUG,"added fresh WHOWAS entry");
 530                         whowas[a->nick] = a;
 531                 }
 532         }
 533         else
 534         {
 535                 log(DEBUG,"updated WHOWAS entry");
 536                 if (iter->second) delete iter->second;
 537                 iter->second = a;
 538         }
 539 }
 540
 541 /* add a client connection to the sockets list */
 542 void AddClient(int socket, int port, bool iscached, in_addr ip4)
 543 {
 544         std::string tempnick = ConvToStr(socket) + "-unknown";
 545         user_hash::iterator iter = clientlist.find(tempnick);
 546         const char *ipaddr = inet_ntoa(ip4);
 547         int j = 0;
 548
 549         // fix by brain.
 550         // as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 551         // using one as a registered connection. As theyre per fd, we can also safely assume
 552         // that we wont have collisions. Therefore, if the nick exists in the list, its only
 553         // used by a dead socket, erase the iterator so that the new client may reclaim it.
 554         // this was probably the cause of 'server ignores me when i hammer it with reconnects'
 555         // issue in earlier alphas/betas
 556         if (iter != clientlist.end())
 557         {
 558                 userrec* goner = iter->second;
 559                 delete goner;
 560                 clientlist.erase(iter);
 561         }
 562
 563         log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
 564
 565         clientlist[tempnick] = new userrec();
 566         clientlist[tempnick]->fd = socket;
 567         strlcpy(clientlist[tempnick]->nick,tempnick.c_str(),NICKMAX-1);
 568
 569         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
 570         for (char* temp = (char*)ipaddr; *temp && j < 64; temp++, j++)
 571                 clientlist[tempnick]->dhost[j] = clientlist[tempnick]->host[j] = *temp;
 572         clientlist[tempnick]->dhost[j] = clientlist[tempnick]->host[j] = 0;
 573
 574         clientlist[tempnick]->server = (char*)FindServerNamePtr(Config->ServerName);
 575         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
 576         strcpy(clientlist[tempnick]->ident, "unknown");
 577
 578         clientlist[tempnick]->registered = 0;
 579         clientlist[tempnick]->signon = TIME + Config->dns_timeout;
 580         clientlist[tempnick]->lastping = 1;
 581         clientlist[tempnick]->ip4 = ip4;
 582         clientlist[tempnick]->port = port;
 583
 584         // set the registration timeout for this user
 585         unsigned long class_regtimeout = 90;
 586         int class_flood = 0;
 587         long class_threshold = 5;
 588         long class_sqmax = 262144;      // 256kb
 589         long class_rqmax = 4096;        // 4k
 590
 591         for (ClassVector::iterator i = Config->Classes.begin(); i != Config->Classes.end(); i++)
 592         {
 593                 if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str())))
 594                 {
 595                         class_regtimeout = (unsigned long)i->registration_timeout;
 596                         class_flood = i->flood;
 597                         clientlist[tempnick]->pingmax = i->pingtime;
 598                         class_threshold = i->threshold;
 599                         class_sqmax = i->sendqmax;
 600                         class_rqmax = i->recvqmax;
 601                         break;
 602                 }
 603         }
 604
 605         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax + Config->dns_timeout;
 606         clientlist[tempnick]->timeout = TIME+class_regtimeout;
 607         clientlist[tempnick]->flood = class_flood;
 608         clientlist[tempnick]->threshold = class_threshold;
 609         clientlist[tempnick]->sendqmax = class_sqmax;
 610         clientlist[tempnick]->recvqmax = class_rqmax;
 611
 612         ucrec a;
 613         a.channel = NULL;
 614         a.uc_modes = 0;
 615         clientlist[tempnick]->chans.resize(MAXCHANS);
 616
 617         fd_ref_table[socket] = clientlist[tempnick];
 618         local_users.push_back(clientlist[tempnick]);
 619
 620         if (local_users.size() > Config->SoftLimit)
 621         {
 622                 kill_link(clientlist[tempnick],"No more connections allowed");
 623                 return;
 624         }
 625
 626         if (local_users.size() >= MAXCLIENTS)
 627         {
 628                 kill_link(clientlist[tempnick],"No more connections allowed");
 629                 return;
 630         }
 631
 632         // this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 633         // its a pretty big but for the moment valid assumption:
 634         // file descriptors are handed out starting at 0, and are recycled as theyre freed.
 635         // therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 636         // irc server at once (or the irc server otherwise initiating this many connections, files etc)
 637         // which for the time being is a physical impossibility (even the largest networks dont have more
 638         // than about 10,000 users on ONE server!)
 639         if ((unsigned)socket >= MAX_DESCRIPTORS)
 640         {
 641                 kill_link(clientlist[tempnick],"Server is full");
 642                 return;
 643         }
 644         char* e = matches_exception(ipaddr);
 645         if (!e)
 646         {
 647                 char* r = matches_zline(ipaddr);
 648                 if (r)
 649                 {
 650                         char reason[MAXBUF];
 651                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
 652                         kill_link(clientlist[tempnick],reason);
 653                         return;
 654                 }
 655         }
 656
 657         ServerInstance->SE->AddFd(socket,true,X_ESTAB_CLIENT);
 658
 659         WriteServ(clientlist[tempnick]->fd,"NOTICE Auth :*** Looking up your hostname...");
 660 }
 661
 662 long FindMatchingGlobal(userrec* user)
 663 {
 664         long x = 0;
 665         for (user_hash::const_iterator a = clientlist.begin(); a != clientlist.end(); a++)
 666         {
 667                 if (a->second->ip4.s_addr == user->ip4.s_addr)
 668                         x++;
 669         }
 670         return x;
 671 }
 672
 673 long FindMatchingLocal(userrec* user)
 674 {
 675         long x = 0;
 676         for (std::vector<userrec*>::const_iterator a = local_users.begin(); a != local_users.end(); a++)
 677         {
 678                 userrec* comp = (userrec*)(*a);
 679                 if (comp->ip4.s_addr == user->ip4.s_addr)
 680                         x++;
 681         }
 682         return x;
 683 }
 684
 685 void FullConnectUser(userrec* user, CullList* Goners)
 686 {
 687         ServerInstance->stats->statsConnects++;
 688         user->idle_lastmsg = TIME;
 689         log(DEBUG,"ConnectUser: %s",user->nick);
 690
 691         ConnectClass a = GetClass(user);
 692
 693         if (a.type == CC_DENY)
 694         {
 695                 Goners->AddItem(user,"Unauthorised connection");
 696                 return;
 697         }
 698         if ((*(a.pass.c_str())) && (!user->haspassed))
 699         {
 700                 Goners->AddItem(user,"Invalid password");
 701                 return;
 702         }
 703         if (FindMatchingLocal(user) > a.maxlocal)
 704         {
 705                 Goners->AddItem(user,"No more connections allowed from your host via this connect class (local)");
 706                 WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s",a.maxlocal,(char*)inet_ntoa(user->ip4));
 707                 return;
 708         }
 709         else if (FindMatchingGlobal(user) > a.maxglobal)
 710         {
 711                 Goners->AddItem(user,"No more connections allowed from your host via this connect class (global)");
 712                 WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a.maxglobal,(char*)inet_ntoa(user->ip4));
 713                 return;
 714         }
 715
 716         char match_against[MAXBUF];
 717         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
 718         char* e = matches_exception(match_against);
 719         if (!e)
 720         {
 721                 char* r = matches_gline(match_against);
 722                 if (r)
 723                 {
 724                         char reason[MAXBUF];
 725                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
 726                         Goners->AddItem(user,reason);
 727                         return;
 728                 }
 729                 r = matches_kline(user->host);
 730                 if (r)
 731                 {
 732                         char reason[MAXBUF];
 733                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
 734                         Goners->AddItem(user,reason);
 735                         return;
 736                 }
 737         }
 738
 739
 740         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Config->Network);
 741         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Config->Network,user->nick,user->ident,user->host);
 742         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,Config->ServerName,VERSION);
 743         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
 744         WriteServ(user->fd,"004 %s %s %s iowghrasxRVSCWBG lvhopsmntikrcaqbegIOLQRSKVHGCNT vhobeIaqglk",user->nick,Config->ServerName,VERSION);
 745         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
 746         // so i'd better split it :)
 747         std::stringstream out(Config->data005);
 748         std::string token = "";
 749         std::string line5 = "";
 750         int token_counter = 0;
 751         while (!out.eof())
 752         {
 753                 out >> token;
 754                 line5 = line5 + token + " ";
 755                 token_counter++;
 756                 if ((token_counter >= 13) || (out.eof() == true))
 757                 {
 758                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
 759                         line5 = "";
 760                         token_counter = 0;
 761                 }
 762         }
 763         ShowMOTD(user);
 764
 765         // fix 3 by brain, move registered = 7 below these so that spurious modes and host changes dont go out
 766         // onto the network and produce 'fake direction'
 767         FOREACH_MOD(I_OnUserConnect,OnUserConnect(user));
 768         FOREACH_MOD(I_OnGlobalConnect,OnGlobalConnect(user));
 769         user->registered = 7;
 770         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));
 771 }
 772
 773 /* re-allocates a nick in the user_hash after they change nicknames,
 774  * returns a pointer to the new user as it may have moved */
 775
 776 userrec* ReHashNick(char* Old, char* New)
 777 {
 778         //user_hash::iterator newnick;
 779         user_hash::iterator oldnick = clientlist.find(Old);
 780
 781         log(DEBUG,"ReHashNick: %s %s",Old,New);
 782
 783         if (!strcasecmp(Old,New))
 784         {
 785                 log(DEBUG,"old nick is new nick, skipping");
 786                 return oldnick->second;
 787         }
 788
 789         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
 790
 791         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
 792
 793         userrec* olduser = oldnick->second;
 794         clientlist[New] = olduser;
 795         clientlist.erase(oldnick);
 796
 797         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
 798
 799         return clientlist[New];
 800 }
 801
 802 void force_nickchange(userrec* user,const char* newnick)
 803 {
 804         char nick[MAXBUF];
 805         int MOD_RESULT = 0;
 806
 807         *nick = 0;
 808
 809         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(user,newnick));
 810         if (MOD_RESULT) {
 811                 ServerInstance->stats->statsCollisions++;
 812                 kill_link(user,"Nickname collision");
 813                 return;
 814         }
 815         if (matches_qline(newnick))
 816         {
 817                 ServerInstance->stats->statsCollisions++;
 818                 kill_link(user,"Nickname collision");
 819                 return;
 820         }
 821
 822         if (user)
 823         {
 824                 if (newnick)
 825                 {
 826                         strlcpy(nick,newnick,MAXBUF-1);
 827                 }
 828                 if (user->registered == 7)
 829                 {
 830                         char* pars[1];
 831                         pars[0] = nick;
 832                         std::string cmd = "NICK";
 833                         ServerInstance->Parser->CallHandler(cmd,pars,1,user);
 834                 }
 835         }
 836 }
 837