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