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 #include "inspircd_config.h"
  18 #include "configreader.h"
  19 #include "channels.h"
  20 #include "connection.h"
  21 #include "users.h"
  22 #include "inspircd.h"
  23 #include <stdio.h>
  24 #ifdef THREADED_DNS
  25 #include <pthread.h>
  26 #include <signal.h>
  27 #endif
  28 #include "inspstring.h"
  29 #include "commands.h"
  30 #include "helperfuncs.h"
  31 #include "typedefs.h"
  32 #include "socketengine.h"
  33 #include "hashcomp.h"
  34 #include "message.h"
  35 #include "wildcard.h"
  36 #include "xline.h"
  37 #include "cull_list.h"
  38
  39 extern InspIRCd* ServerInstance;
  40 extern int WHOWAS_STALE;
  41 extern int WHOWAS_MAX;
  42 extern std::vector<Module*> modules;
  43 extern std::vector<ircd_module*> factory;
  44 extern std::vector<InspSocket*> module_sockets;
  45 extern int MODCOUNT;
  46 extern InspSocket* socket_ref[MAX_DESCRIPTORS];
  47 extern time_t TIME;
  48 extern userrec* fd_ref_table[MAX_DESCRIPTORS];
  49 extern ServerConfig *Config;
  50 extern user_hash clientlist;
  51
  52 whowas_users whowas;
  53
  54 extern std::vector<userrec*> local_users;
  55
  56 std::vector<userrec*> all_opers;
  57
  58 typedef std::map<irc::string,char*> opertype_t;
  59 typedef opertype_t operclass_t;
  60
  61 opertype_t opertypes;
  62 operclass_t operclass;
  63
  64 bool InitTypes(const char* tag)
  65 {
  66         for (opertype_t::iterator n = opertypes.begin(); n != opertypes.end(); n++)
  67         {
  68                 if (n->second)
  69                         delete[] n->second;
  70         }
  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
  84         operclass.clear();
  85         return true;
  86 }
  87
  88 bool DoType(const char* tag, char** entries, void** values, int* types)
  89 {
  90         char* TypeName = (char*)values[0];
  91         char* Classes = (char*)values[1];
  92
  93         opertypes[TypeName] = strdup(Classes);
  94         log(DEBUG,"Read oper TYPE '%s' with classes '%s'",TypeName,Classes);
  95         return true;
  96 }
  97
  98 bool DoClass(const char* tag, char** entries, void** values, int* types)
  99 {
 100         char* ClassName = (char*)values[0];
 101         char* CommandList = (char*)values[1];
 102
 103         operclass[ClassName] = strdup(CommandList);
 104         log(DEBUG,"Read oper CLASS '%s' with commands '%s'",ClassName,CommandList);
 105         return true;
 106 }
 107
 108 bool DoneClassesAndTypes(const char* tag)
 109 {
 110         return true;
 111 }
 112
 113 userrec::userrec()
 114 {
 115         // the PROPER way to do it, AVOID bzero at *ALL* costs
 116         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = 0;
 117         server = (char*)FindServerNamePtr(Config->ServerName);
 118         reset_due = TIME;
 119         lines_in = fd = lastping = signon = idle_lastmsg = nping = registered = 0;
 120         timeout = flood = port = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 121         haspassed = dns_done = false;
 122         recvq = "";
 123         sendq = "";
 124         chans.clear();
 125         invites.clear();
 126         chans.resize(MAXCHANS);
 127         memset(modes,0,sizeof(modes));
 128
 129         for (unsigned int n = 0; n < MAXCHANS; n++)
 130         {
 131                 ucrec* x = new ucrec();
 132                 chans[n] = x;
 133                 x->channel = NULL;
 134                 x->uc_modes = 0;
 135         }
 136 }
 137
 138 userrec::~userrec()
 139 {
 140         for (std::vector<ucrec*>::iterator n = chans.begin(); n != chans.end(); n++)
 141         {
 142                 ucrec* x = (ucrec*)*n;
 143                 DELETE(x);
 144         }
 145 }
 146
 147 /* XXX - minor point, other *Host functions return a char *, this one creates it. Might be nice to be consistant? */
 148 void userrec::MakeHost(char* nhost)
 149 {
 150         /* This is much faster than snprintf */
 151         char* t = nhost;
 152         for(char* n = ident; *n; n++)
 153                 *t++ = *n;
 154         *t++ = '@';
 155         for(char* n = host; *n; n++)
 156                 *t++ = *n;
 157         *t = 0;
 158 }
 159
 160 void userrec::CloseSocket()
 161 {
 162         shutdown(this->fd,2);
 163         close(this->fd);
 164 }
 165
 166 char* userrec::GetFullHost()
 167 {
 168         static char result[MAXBUF];
 169         char* t = result;
 170         for(char* n = nick; *n; n++)
 171                 *t++ = *n;
 172         *t++ = '!';
 173         for(char* n = ident; *n; n++)
 174                 *t++ = *n;
 175         *t++ = '@';
 176         for(char* n = dhost; *n; n++)
 177                 *t++ = *n;
 178         *t = 0;
 179         return result;
 180 }
 181
 182 char* userrec::MakeWildHost()
 183 {
 184         static char nresult[MAXBUF];
 185         char* t = nresult;
 186         *t++ = '*';     *t++ = '!';
 187         *t++ = '*';     *t++ = '@';
 188         for(char* n = dhost; *n; n++)
 189                 *t++ = *n;
 190         *t = 0;
 191         return nresult;
 192 }
 193
 194 int userrec::ReadData(void* buffer, size_t size)
 195 {
 196         if (this->fd > -1)
 197         {
 198                 return read(this->fd, buffer, size);
 199         }
 200         else
 201                 return 0;
 202 }
 203
 204
 205 char* userrec::GetFullRealHost()
 206 {
 207         static char fresult[MAXBUF];
 208         char* t = fresult;
 209         for(char* n = nick; *n; n++)
 210                 *t++ = *n;
 211         *t++ = '!';
 212         for(char* n = ident; *n; n++)
 213                 *t++ = *n;
 214         *t++ = '@';
 215         for(char* n = host; *n; n++)
 216                 *t++ = *n;
 217         *t = 0;
 218         return fresult;
 219 }
 220
 221 bool userrec::IsInvited(irc::string &channel)
 222 {
 223         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 224         {
 225                 irc::string compare = i->channel;
 226
 227                 if (compare == channel)
 228                 {
 229                         return true;
 230                 }
 231         }
 232
 233         return false;
 234 }
 235
 236 InvitedList* userrec::GetInviteList()
 237 {
 238         return &invites;
 239 }
 240
 241 void userrec::InviteTo(irc::string &channel)
 242 {
 243         Invited i;
 244
 245         i.channel = channel;
 246         invites.push_back(i);
 247 }
 248
 249 void userrec::RemoveInvite(irc::string &channel)
 250 {
 251         log(DEBUG,"Removing invites");
 252
 253         if (invites.size())
 254         {
 255                 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 256                 {
 257                         irc::string compare = i->channel;
 258
 259                         if (compare == channel)
 260                         {
 261                                 invites.erase(i);
 262                                 return;
 263                         }
 264                 }
 265         }
 266 }
 267
 268 bool userrec::HasPermission(const std::string &command)
 269 {
 270         char* mycmd;
 271         char* savept;
 272         char* savept2;
 273
 274         /*
 275          * users on remote servers can completely bypass all permissions based checks.
 276          * This prevents desyncs when one server has different type/class tags to another.
 277          * That having been said, this does open things up to the possibility of source changes
 278          * allowing remote kills, etc - but if they have access to the src, they most likely have
 279          * access to the conf - so it's an end to a means either way.
 280          */
 281         if (!IS_LOCAL(this))
 282                 return true;
 283
 284         // are they even an oper at all?
 285         if (*this->oper)
 286         {
 287                 opertype_t::iterator iter_opertype = opertypes.find(this->oper);
 288                 if (iter_opertype != opertypes.end())
 289                 {
 290                         char* Classes = strdup(iter_opertype->second);
 291                         char* myclass = strtok_r(Classes," ",&savept);
 292                         while (myclass)
 293                         {
 294                                 operclass_t::iterator iter_operclass = operclass.find(myclass);
 295                                 if (iter_operclass != operclass.end())
 296                                 {
 297                                         char* CommandList = strdup(iter_operclass->second);
 298                                         mycmd = strtok_r(CommandList," ",&savept2);
 299                                         while (mycmd)
 300                                         {
 301                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 302                                                 {
 303                                                         free(Classes);
 304                                                         free(CommandList);
 305                                                         return true;
 306                                                 }
 307                                                 mycmd = strtok_r(NULL," ",&savept2);
 308                                         }
 309                                         free(CommandList);
 310                                 }
 311                                 myclass = strtok_r(NULL," ",&savept);
 312                         }
 313                         free(Classes);
 314                 }
 315         }
 316         return false;
 317 }
 318
 319
 320 bool userrec::AddBuffer(const std::string &a)
 321 {
 322         std::string b = "";
 323         char* n = (char*)a.c_str();
 324
 325         for (char* i = n; *i; i++)
 326         {
 327                 if ((*i != '\r') && (*i != '\0') && (*i != 7))
 328                         b = b + *i;
 329         }
 330
 331         recvq.append(b);
 332         unsigned int i = 0;
 333
 334         // count the size of the first line in the buffer.
 335         while (i < recvq.length())
 336         {
 337                 if (recvq[i++] == '\n')
 338                         break;
 339         }
 340         if (recvq.length() > (unsigned)this->recvqmax)
 341         {
 342                 this->SetWriteError("RecvQ exceeded");
 343                 WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 344         }
 345
 346         /*
 347          * return false if we've had more than 600 characters WITHOUT
 348          * a carriage return (this is BAD, drop the socket)
 349          */
 350         return (i < 600);
 351 }
 352
 353 bool userrec::BufferIsReady()
 354 {
 355         unsigned int t = recvq.length();
 356
 357         for (unsigned int i = 0; i < t; i++)
 358                 if (recvq[i] == '\n')
 359                         return true;
 360         return false;
 361 }
 362
 363 void userrec::ClearBuffer()
 364 {
 365         recvq = "";
 366 }
 367
 368 std::string userrec::GetBuffer()
 369 {
 370         if (recvq == "")
 371                 return "";
 372
 373         char* line = (char*)recvq.c_str();
 374
 375         std::string ret = "";
 376
 377         while ((*line != '\n') && (*line))
 378         {
 379                 ret = ret + *line;
 380                 line++;
 381         }
 382
 383         while ((*line == '\n') || (*line == '\r'))
 384                 line++;
 385
 386         recvq = line;
 387
 388         return ret;
 389 }
 390
 391 void userrec::AddWriteBuf(const std::string &data)
 392 {
 393         if (*this->GetWriteError())
 394                 return;
 395
 396         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 397         {
 398                 /*
 399                  * Fix by brain - Set the error text BEFORE calling writeopers, because
 400                  * if we dont it'll recursively  call here over and over again trying
 401                  * to repeatedly add the text to the sendq!
 402                  */
 403                 this->SetWriteError("SendQ exceeded");
 404                 WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 405                 return;
 406         }
 407
 408         sendq.append(data);
 409 }
 410
 411 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 412 void userrec::FlushWriteBuf()
 413 {
 414         if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 415         {
 416                 char* tb = (char*)this->sendq.c_str();
 417                 int n_sent = write(this->fd,tb,this->sendq.length());
 418                 if (n_sent == -1)
 419                 {
 420                         if (errno != EAGAIN)
 421                                 this->SetWriteError(strerror(errno));
 422                 }
 423                 else
 424                 {
 425                         // advance the queue
 426                         tb += n_sent;
 427                         this->sendq = tb;
 428                         // update the user's stats counters
 429                         this->bytes_out += n_sent;
 430                         this->cmds_out++;
 431                 }
 432         }
 433 }
 434
 435 void userrec::SetWriteError(const std::string &error)
 436 {
 437         log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 438         // don't try to set the error twice, its already set take the first string.
 439         if (this->WriteError == "")
 440                 this->WriteError = error;
 441 }
 442
 443 const char* userrec::GetWriteError()
 444 {
 445         return this->WriteError.c_str();
 446 }
 447
 448 void AddOper(userrec* user)
 449 {
 450         log(DEBUG,"Oper added to optimization list");
 451         all_opers.push_back(user);
 452 }
 453
 454 void DeleteOper(userrec* user)
 455 {
 456         for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 457         {
 458                 if (*a == user)
 459                 {
 460                         log(DEBUG,"Oper removed from optimization list");
 461                         all_opers.erase(a);
 462                         return;
 463                 }
 464         }
 465 }
 466
 467 void kill_link(userrec *user,const char* r)
 468 {
 469         user_hash::iterator iter = clientlist.find(user->nick);
 470
 471 /*
 472  * I'm pretty sure returning here is causing a desync when part of the net thinks a user is gone,
 473  * and another part doesn't. We want to broadcast the quit/kill before bailing so the net stays in sync.
 474  *
 475  * I can't imagine this blowing up, so I'm commenting it out. We still check
 476  * before playing with a bad iterator below in our if(). DISCUSS THIS BEFORE YOU DO ANYTHING. --w00t
 477  *
 478  *      if (iter == clientlist.end())
 479  *              return;
 480  */
 481
 482         char reason[MAXBUF];
 483
 484         strlcpy(reason,r,MAXQUIT-1);
 485         log(DEBUG,"kill_link: %s %d '%s'",user->nick,user->fd,reason);
 486
 487         if (IS_LOCAL(user))
 488                 Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
 489
 490         if (user->registered == 7)
 491         {
 492                 purge_empty_chans(user);
 493                 FOREACH_MOD(I_OnUserQuit,OnUserQuit(user,reason));
 494                 WriteCommonExcept(user,"QUIT :%s",reason);
 495         }
 496
 497         if (IS_LOCAL(user))
 498                 user->FlushWriteBuf();
 499
 500         FOREACH_MOD(I_OnUserDisconnect,OnUserDisconnect(user));
 501
 502         if (IS_LOCAL(user))
 503         {
 504                 if (Config->GetIOHook(user->port))
 505                 {
 506                         try
 507                         {
 508                                 Config->GetIOHook(user->port)->OnRawSocketClose(user->fd);
 509                         }
 510                         catch (ModuleException& modexcept)
 511                         {
 512                                 log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
 513                         }
 514                 }
 515
 516                 ServerInstance->SE->DelFd(user->fd);
 517                 user->CloseSocket();
 518         }
 519
 520         /*
 521          * this must come before the WriteOpers so that it doesnt try to fill their buffer with anything
 522          * if they were an oper with +s.
 523          *
 524          * XXX -
 525          * In the current implementation, we only show local quits, as we only show local connects. With
 526          * the proposed implmentation of snomasks however, this will likely change in the (near?) future.
 527          */
 528         if (user->registered == 7)
 529         {
 530                 if (IS_LOCAL(user))
 531                         WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
 532                 AddWhoWas(user);
 533         }
 534
 535         if (iter != clientlist.end())
 536         {
 537                 log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
 538                 if (IS_LOCAL(user))
 539                 {
 540                         fd_ref_table[user->fd] = NULL;
 541                         if (find(local_users.begin(),local_users.end(),user) != local_users.end())
 542                         {
 543                                 local_users.erase(find(local_users.begin(),local_users.end(),user));
 544                                 log(DEBUG,"Delete local user");
 545                         }
 546                 }
 547                 clientlist.erase(iter);
 548                 DELETE(user);
 549         }
 550 }
 551
 552 WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
 553 {
 554         this->host = strdup(user->host);
 555         this->dhost = strdup(user->dhost);
 556         this->ident = strdup(user->ident);
 557         this->server = user->server;
 558         this->gecos = strdup(user->fullname);
 559 }
 560
 561 WhoWasGroup::~WhoWasGroup()
 562 {
 563         if (host)
 564                 free(host);
 565         if (dhost)
 566                 free(dhost);
 567         if (ident)
 568                 free(ident);
 569         if (gecos)
 570                 free(gecos);
 571 }
 572
 573 /* adds or updates an entry in the whowas list */
 574 void AddWhoWas(userrec* u)
 575 {
 576         whowas_users::iterator iter = whowas.find(u->nick);
 577
 578         if (iter == whowas.end())
 579         {
 580                 whowas_set* n = new whowas_set;
 581                 WhoWasGroup *a = new WhoWasGroup(u);
 582                 n->push_back(a);
 583                 whowas[u->nick] = n;
 584         }
 585         else
 586         {
 587                 whowas_set* group = (whowas_set*)iter->second;
 588
 589                 if (group->size() > 10)
 590                 {
 591                         WhoWasGroup *a = (WhoWasGroup*)*(group->begin());
 592                         DELETE(a);
 593                         group->pop_front();
 594                 }
 595
 596                 WhoWasGroup *a = new WhoWasGroup(u);
 597                 group->push_back(a);
 598         }
 599 }
 600
 601 /* every hour, run this function which removes all entries over 3 days */
 602 void MaintainWhoWas(time_t TIME)
 603 {
 604         for (whowas_users::iterator iter = whowas.begin(); iter != whowas.end(); iter++)
 605         {
 606                 whowas_set* n = (whowas_set*)iter->second;
 607                 if (n->size())
 608                 {
 609                         while ((n->begin() != n->end()) && ((*n->begin())->signon < TIME - 259200)) // 3 days
 610                         {
 611                                 WhoWasGroup *a = *(n->begin());
 612                                 DELETE(a);
 613                                 n->erase(n->begin());
 614                         }
 615                 }
 616         }
 617 }
 618
 619 /* add a client connection to the sockets list */
 620 void AddClient(int socket, int port, bool iscached, in_addr ip4)
 621 {
 622         std::string tempnick = ConvToStr(socket) + "-unknown";
 623         user_hash::iterator iter = clientlist.find(tempnick);
 624         const char *ipaddr = inet_ntoa(ip4);
 625         int j = 0;
 626
 627         /*
 628          * fix by brain.
 629          * as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 630          * using one as a registered connection. As they are per fd, we can also safely assume
 631          * that we wont have collisions. Therefore, if the nick exists in the list, its only
 632          * used by a dead socket, erase the iterator so that the new client may reclaim it.
 633          * this was probably the cause of 'server ignores me when i hammer it with reconnects'
 634          * issue in earlier alphas/betas
 635          */
 636         if (iter != clientlist.end())
 637         {
 638                 userrec* goner = iter->second;
 639                 DELETE(goner);
 640                 clientlist.erase(iter);
 641         }
 642
 643         log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
 644
 645         clientlist[tempnick] = new userrec();
 646         clientlist[tempnick]->fd = socket;
 647         strlcpy(clientlist[tempnick]->nick,tempnick.c_str(),NICKMAX-1);
 648
 649         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
 650         for (char* temp = (char*)ipaddr; *temp && j < 64; temp++, j++)
 651                 clientlist[tempnick]->dhost[j] = clientlist[tempnick]->host[j] = *temp;
 652         clientlist[tempnick]->dhost[j] = clientlist[tempnick]->host[j] = 0;
 653
 654         clientlist[tempnick]->server = (char*)FindServerNamePtr(Config->ServerName);
 655         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
 656         strcpy(clientlist[tempnick]->ident, "unknown");
 657
 658         clientlist[tempnick]->registered = 0;
 659         clientlist[tempnick]->signon = TIME + Config->dns_timeout;
 660         clientlist[tempnick]->lastping = 1;
 661         clientlist[tempnick]->ip4 = ip4;
 662         clientlist[tempnick]->port = port;
 663
 664         // set the registration timeout for this user
 665         unsigned long class_regtimeout = 90;
 666         int class_flood = 0;
 667         long class_threshold = 5;
 668         long class_sqmax = 262144;      // 256kb
 669         long class_rqmax = 4096;        // 4k
 670
 671         for (ClassVector::iterator i = Config->Classes.begin(); i != Config->Classes.end(); i++)
 672         {
 673                 if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str())))
 674                 {
 675                         class_regtimeout = (unsigned long)i->registration_timeout;
 676                         class_flood = i->flood;
 677                         clientlist[tempnick]->pingmax = i->pingtime;
 678                         class_threshold = i->threshold;
 679                         class_sqmax = i->sendqmax;
 680                         class_rqmax = i->recvqmax;
 681                         break;
 682                 }
 683         }
 684
 685         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax + Config->dns_timeout;
 686         clientlist[tempnick]->timeout = TIME+class_regtimeout;
 687         clientlist[tempnick]->flood = class_flood;
 688         clientlist[tempnick]->threshold = class_threshold;
 689         clientlist[tempnick]->sendqmax = class_sqmax;
 690         clientlist[tempnick]->recvqmax = class_rqmax;
 691
 692         fd_ref_table[socket] = clientlist[tempnick];
 693         local_users.push_back(clientlist[tempnick]);
 694
 695         if (local_users.size() > Config->SoftLimit)
 696         {
 697                 kill_link(clientlist[tempnick],"No more connections allowed");
 698                 return;
 699         }
 700
 701         if (local_users.size() >= MAXCLIENTS)
 702         {
 703                 kill_link(clientlist[tempnick],"No more connections allowed");
 704                 return;
 705         }
 706
 707         /*
 708          * XXX -
 709          * this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 710          * its a pretty big but for the moment valid assumption:
 711          * file descriptors are handed out starting at 0, and are recycled as theyre freed.
 712          * therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 713          * irc server at once (or the irc server otherwise initiating this many connections, files etc)
 714          * which for the time being is a physical impossibility (even the largest networks dont have more
 715          * than about 10,000 users on ONE server!)
 716          */
 717         if ((unsigned)socket >= MAX_DESCRIPTORS)
 718         {
 719                 kill_link(clientlist[tempnick],"Server is full");
 720                 return;
 721         }
 722         char* e = matches_exception(ipaddr);
 723         if (!e)
 724         {
 725                 char* r = matches_zline(ipaddr);
 726                 if (r)
 727                 {
 728                         char reason[MAXBUF];
 729                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
 730                         kill_link(clientlist[tempnick],reason);
 731                         return;
 732                 }
 733         }
 734
 735         if (socket > -1)
 736         {
 737                 ServerInstance->SE->AddFd(socket,true,X_ESTAB_CLIENT);
 738         }
 739
 740         WriteServ(clientlist[tempnick]->fd,"NOTICE Auth :*** Looking up your hostname...");
 741 }
 742
 743 long FindMatchingGlobal(userrec* user)
 744 {
 745         long x = 0;
 746         for (user_hash::const_iterator a = clientlist.begin(); a != clientlist.end(); a++)
 747         {
 748                 if (a->second->ip4.s_addr == user->ip4.s_addr)
 749                         x++;
 750         }
 751         return x;
 752 }
 753
 754 long FindMatchingLocal(userrec* user)
 755 {
 756         long x = 0;
 757         for (std::vector<userrec*>::const_iterator a = local_users.begin(); a != local_users.end(); a++)
 758         {
 759                 userrec* comp = (userrec*)(*a);
 760                 if (comp->ip4.s_addr == user->ip4.s_addr)
 761                         x++;
 762         }
 763         return x;
 764 }
 765
 766 void FullConnectUser(userrec* user, CullList* Goners)
 767 {
 768         ServerInstance->stats->statsConnects++;
 769         user->idle_lastmsg = TIME;
 770         log(DEBUG,"ConnectUser: %s",user->nick);
 771
 772         ConnectClass a = GetClass(user);
 773
 774         if (a.type == CC_DENY)
 775         {
 776                 Goners->AddItem(user,"Unauthorised connection");
 777                 return;
 778         }
 779
 780         if ((*(a.pass.c_str())) && (!user->haspassed))
 781         {
 782                 Goners->AddItem(user,"Invalid password");
 783                 return;
 784         }
 785
 786         if (FindMatchingLocal(user) > a.maxlocal)
 787         {
 788                 Goners->AddItem(user,"No more connections allowed from your host via this connect class (local)");
 789                 WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s",a.maxlocal,(char*)inet_ntoa(user->ip4));
 790                 return;
 791         }
 792         else if (FindMatchingGlobal(user) > a.maxglobal)
 793         {
 794                 Goners->AddItem(user,"No more connections allowed from your host via this connect class (global)");
 795                 WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a.maxglobal,(char*)inet_ntoa(user->ip4));
 796                 return;
 797         }
 798
 799         char match_against[MAXBUF];
 800         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
 801         char* e = matches_exception(match_against);
 802
 803         if (!e)
 804         {
 805                 char* r = matches_gline(match_against);
 806
 807                 if (r)
 808                 {
 809                         char reason[MAXBUF];
 810                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
 811                         Goners->AddItem(user,reason);
 812                         return;
 813                 }
 814
 815                 r = matches_kline(match_against);
 816
 817                 if (r)
 818                 {
 819                         char reason[MAXBUF];
 820                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
 821                         Goners->AddItem(user,reason);
 822                         return;
 823                 }
 824         }
 825
 826
 827         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Config->Network);
 828         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Config->Network,user->nick,user->ident,user->host);
 829         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,Config->ServerName,VERSION);
 830         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
 831         WriteServ(user->fd,"004 %s %s %s iowghrasxRVSCWBG lvhopsmntikrcaqbegIOLQRSKVHGCNT vhobeIaqglk",user->nick,Config->ServerName,VERSION);
 832
 833         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
 834         // so i'd better split it :)
 835         std::stringstream out(Config->data005);
 836         std::string token = "";
 837         std::string line5 = "";
 838         int token_counter = 0;
 839
 840         while (!out.eof())
 841         {
 842                 out >> token;
 843                 line5 = line5 + token + " ";
 844                 token_counter++;
 845
 846                 if ((token_counter >= 13) || (out.eof() == true))
 847                 {
 848                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
 849                         line5 = "";
 850                         token_counter = 0;
 851                 }
 852         }
 853
 854         ShowMOTD(user);
 855
 856         /*
 857          * fix 3 by brain, move registered = 7 below these so that spurious modes and host
 858          * changes dont go out onto the network and produce 'fake direction'.
 859          */
 860         FOREACH_MOD(I_OnUserConnect,OnUserConnect(user));
 861         FOREACH_MOD(I_OnGlobalConnect,OnGlobalConnect(user));
 862         user->registered = 7;
 863         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));
 864 }
 865
 866 /** ReHashNick()
 867  * re-allocates a nick in the user_hash after they change nicknames,
 868  * returns a pointer to the new user as it may have moved
 869  */
 870 userrec* ReHashNick(char* Old, char* New)
 871 {
 872         //user_hash::iterator newnick;
 873         user_hash::iterator oldnick = clientlist.find(Old);
 874
 875         log(DEBUG,"ReHashNick: %s %s",Old,New);
 876
 877         if (!strcasecmp(Old,New))
 878         {
 879                 log(DEBUG,"old nick is new nick, skipping");
 880                 return oldnick->second;
 881         }
 882
 883         if (oldnick == clientlist.end())
 884                 return NULL; /* doesnt exist */
 885
 886         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
 887
 888         userrec* olduser = oldnick->second;
 889         clientlist[New] = olduser;
 890         clientlist.erase(oldnick);
 891
 892         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
 893
 894         return clientlist[New];
 895 }
 896
 897 void force_nickchange(userrec* user,const char* newnick)
 898 {
 899         char nick[MAXBUF];
 900         int MOD_RESULT = 0;
 901
 902         *nick = 0;
 903
 904         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(user,newnick));
 905
 906         if (MOD_RESULT)
 907         {
 908                 ServerInstance->stats->statsCollisions++;
 909                 kill_link(user,"Nickname collision");
 910                 return;
 911         }
 912
 913         if (matches_qline(newnick))
 914         {
 915                 ServerInstance->stats->statsCollisions++;
 916                 kill_link(user,"Nickname collision");
 917                 return;
 918         }
 919
 920         if (user)
 921         {
 922                 if (newnick)
 923                 {
 924                         strlcpy(nick,newnick,MAXBUF-1);
 925                 }
 926
 927                 if (user->registered == 7)
 928                 {
 929                         char* pars[1];
 930
 931                         pars[0] = nick;
 932                         std::string cmd = "NICK";
 933                         ServerInstance->Parser->CallHandler(cmd,pars,1,user);
 934                 }
 935         }
 936 }