src/users.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 using namespace std;
  18
  19 #include "inspircd_config.h"
  20 #include "channels.h"
  21 #include "connection.h"
  22 #include "users.h"
  23 #include "inspircd.h"
  24 #include <stdio.h>
  25 #ifdef THREADED_DNS
  26 #include <pthread.h>
  27 #include <signal.h>
  28 #endif
  29 #include "inspstring.h"
  30 #include "commands.h"
  31 #include "helperfuncs.h"
  32 #include "typedefs.h"
  33 #include "socketengine.h"
  34 #include "hashcomp.h"
  35 #include "message.h"
  36 #include "wildcard.h"
  37 #include "xline.h"
  38 #include "cull_list.h"
  39
  40 extern InspIRCd* ServerInstance;
  41 extern int WHOWAS_STALE;
  42 extern int WHOWAS_MAX;
  43 extern std::vector<Module*> modules;
  44 extern std::vector<ircd_module*> factory;
  45 extern std::vector<InspSocket*> module_sockets;
  46 extern int MODCOUNT;
  47 extern InspSocket* socket_ref[MAX_DESCRIPTORS];
  48 extern time_t TIME;
  49 extern userrec* fd_ref_table[MAX_DESCRIPTORS];
  50 extern ServerConfig *Config;
  51 extern user_hash clientlist;
  52
  53 whowas_users whowas;
  54
  55 extern std::vector<userrec*> local_users;
  56
  57 std::vector<userrec*> all_opers;
  58
  59 typedef std::map<irc::string,char*> opertype_t;
  60 typedef opertype_t operclass_t;
  61
  62 opertype_t opertypes;
  63 operclass_t operclass;
  64
  65 bool InitTypes(const char* tag)
  66 {
  67         for (opertype_t::iterator n = opertypes.begin(); n != opertypes.end(); n++)
  68         {
  69                 if (n->second)
  70                         delete[] n->second;
  71         }
  72         opertypes.clear();
  73         return true;
  74 }
  75
  76 bool InitClasses(const char* tag)
  77 {
  78         for (operclass_t::iterator n = operclass.begin(); n != operclass.end(); n++)
  79         {
  80                 if (n->second)
  81                         delete[] n->second;
  82         }
  83         operclass.clear();
  84         return true;
  85 }
  86
  87 bool DoType(const char* tag, char** entries, void** values, int* types)
  88 {
  89         char* TypeName = (char*)values[0];
  90         char* Classes = (char*)values[1];
  91         /*Config->ConfValue("type","name",j,TypeName,&Config->config_f);
  92         Config->ConfValue("type","classes",j,Classes,&Config->config_f);*/
  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         /*Config->ConfValue("class","name",k,ClassName,&Config->config_f);
 103         Config->ConfValue("class","commands",k,CommandList,&Config->config_f);*/
 104         operclass[ClassName] = strdup(CommandList);
 105         log(DEBUG,"Read oper CLASS '%s' with commands '%s'",ClassName,CommandList);
 106         return true;
 107 }
 108
 109 bool DoneClassesAndTypes()
 110 {
 111         return true;
 112 }
 113
 114 template<typename T> inline string ConvToStr(const T &in)
 115 {
 116         stringstream tmp;
 117         if (!(tmp << in)) return string();
 118         return tmp.str();
 119 }
 120
 121 userrec::userrec()
 122 {
 123         // the PROPER way to do it, AVOID bzero at *ALL* costs
 124         *password = *nick = *ident = *host = *dhost = *fullname = *modes = *awaymsg = *oper = 0;
 125         server = (char*)FindServerNamePtr(Config->ServerName);
 126         reset_due = TIME;
 127         lines_in = fd = lastping = signon = idle_lastmsg = nping = registered = 0;
 128         modebits = timeout = flood = port = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 129         haspassed = dns_done = false;
 130         recvq = "";
 131         sendq = "";
 132         chans.clear();
 133         invites.clear();
 134         chans.resize(MAXCHANS);
 135         for (unsigned int n = 0; n < MAXCHANS; n++)
 136         {
 137                 ucrec* x = new ucrec();
 138                 chans[n] = x;
 139                 x->channel = NULL;
 140                 x->uc_modes = 0;
 141         }
 142 }
 143
 144 userrec::~userrec()
 145 {
 146         for (std::vector<ucrec*>::iterator n = chans.begin(); n != chans.end(); n++)
 147         {
 148                 ucrec* x = (ucrec*)*n;
 149                 delete x;
 150         }
 151 }
 152
 153 void userrec::MakeHost(char* nhost)
 154 {
 155         /* This is much faster than snprintf */
 156         char* t = nhost;
 157         for(char* n = ident; *n; n++)
 158                 *t++ = *n;
 159         *t++ = '@';
 160         for(char* n = host; *n; n++)
 161                 *t++ = *n;
 162         *t = 0;
 163 }
 164
 165 void userrec::CloseSocket()
 166 {
 167         shutdown(this->fd,2);
 168         close(this->fd);
 169 }
 170
 171 char* userrec::GetFullHost()
 172 {
 173         static char result[MAXBUF];
 174         char* t = result;
 175         for(char* n = nick; *n; n++)
 176                 *t++ = *n;
 177         *t++ = '!';
 178         for(char* n = ident; *n; n++)
 179                 *t++ = *n;
 180         *t++ = '@';
 181         for(char* n = dhost; *n; n++)
 182                 *t++ = *n;
 183         *t = 0;
 184         return result;
 185 }
 186
 187 char* userrec::MakeWildHost()
 188 {
 189         static char nresult[MAXBUF];
 190         char* t = nresult;
 191         *t++ = '*';     *t++ = '!';
 192         *t++ = '*';     *t++ = '@';
 193         for(char* n = dhost; *n; n++)
 194                 *t++ = *n;
 195         *t = 0;
 196         return nresult;
 197 }
 198
 199 int userrec::ReadData(void* buffer, size_t size)
 200 {
 201         if (this->fd > -1)
 202         {
 203                 return read(this->fd, buffer, size);
 204         }
 205         else return 0;
 206 }
 207
 208
 209 char* userrec::GetFullRealHost()
 210 {
 211         static char fresult[MAXBUF];
 212         char* t = fresult;
 213         for(char* n = nick; *n; n++)
 214                 *t++ = *n;
 215         *t++ = '!';
 216         for(char* n = ident; *n; n++)
 217                 *t++ = *n;
 218         *t++ = '@';
 219         for(char* n = host; *n; n++)
 220                 *t++ = *n;
 221         *t = 0;
 222         return fresult;
 223 }
 224
 225 bool userrec::IsInvited(irc::string &channel)
 226 {
 227         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 228         {
 229                 irc::string compare = i->channel;
 230                 if (compare == channel)
 231                 {
 232                         return true;
 233                 }
 234         }
 235         return false;
 236 }
 237
 238 InvitedList* userrec::GetInviteList()
 239 {
 240         return &invites;
 241 }
 242
 243 void userrec::InviteTo(irc::string &channel)
 244 {
 245         Invited i;
 246         i.channel = channel;
 247         invites.push_back(i);
 248 }
 249
 250 void userrec::RemoveInvite(irc::string &channel)
 251 {
 252         log(DEBUG,"Removing invites");
 253         if (invites.size())
 254         {
 255                 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 256                 {
 257                         irc::string compare = i->channel;
 258                         if (compare == channel)
 259                         {
 260                                 invites.erase(i);
 261                                 return;
 262                         }
 263                 }
 264         }
 265 }
 266
 267 bool userrec::HasPermission(const std::string &command)
 268 {
 269         char* mycmd;
 270         char* savept;
 271         char* savept2;
 272
 273         // users on remote servers can completely bypass
 274         // all permissions based checks.
 275         // This prevents desyncs when one server has different
 276         // type/class tags to another.
 277         if (!IS_LOCAL(this))
 278                 return true;
 279
 280         // are they even an oper at all?
 281         if (*this->oper)
 282         {
 283                 opertype_t::iterator iter_opertype = opertypes.find(this->oper);
 284                 if (iter_opertype != opertypes.end())
 285                 {
 286                         char* Classes = strdup(iter_opertype->second);
 287                         char* myclass = strtok_r(Classes," ",&savept);
 288                         while (myclass)
 289                         {
 290                                 operclass_t::iterator iter_operclass = operclass.find(myclass);
 291                                 if (iter_operclass != operclass.end())
 292                                 {
 293                                         char* CommandList = strdup(iter_operclass->second);
 294                                         mycmd = strtok_r(CommandList," ",&savept2);
 295                                         while (mycmd)
 296                                         {
 297                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 298                                                 {
 299                                                         free(Classes);
 300                                                         free(CommandList);
 301                                                         return true;
 302                                                 }
 303                                                 mycmd = strtok_r(NULL," ",&savept2);
 304                                         }
 305                                         free(CommandList);
 306                                 }
 307                                 myclass = strtok_r(NULL," ",&savept);
 308                         }
 309                         free(Classes);
 310                 }
 311         }
 312         return false;
 313 }
 314
 315
 316 bool userrec::AddBuffer(const std::string &a)
 317 {
 318         std::string b = "";
 319         char* n = (char*)a.c_str();
 320         for (char* i = n; *i; i++)
 321         {
 322                 if ((*i != '\r') && (*i != '\0') && (*i != 7))
 323                         b = b + *i;
 324         }
 325         std::stringstream stream(recvq);
 326         stream << b;
 327         recvq = stream.str();
 328         unsigned int i = 0;
 329         // count the size of the first line in the buffer.
 330         while (i < recvq.length())
 331         {
 332                 if (recvq[i++] == '\n')
 333                         break;
 334         }
 335         if (recvq.length() > (unsigned)this->recvqmax)
 336         {
 337                 this->SetWriteError("RecvQ exceeded");
 338                 WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 339         }
 340         // return false if we've had more than 600 characters WITHOUT
 341         // a carriage return (this is BAD, drop the socket)
 342         return (i < 600);
 343 }
 344
 345 bool userrec::BufferIsReady()
 346 {
 347         unsigned int t = recvq.length();
 348         for (unsigned int i = 0; i < t; i++)
 349                 if (recvq[i] == '\n')
 350                         return true;
 351         return false;
 352 }
 353
 354 void userrec::ClearBuffer()
 355 {
 356         recvq = "";
 357 }
 358
 359 std::string userrec::GetBuffer()
 360 {
 361         if (recvq == "")
 362                 return "";
 363         char* line = (char*)recvq.c_str();
 364         std::string ret = "";
 365         while ((*line != '\n') && (*line))
 366         {
 367                 ret = ret + *line;
 368                 line++;
 369         }
 370         if ((*line == '\n') || (*line == '\r'))
 371                 line++;
 372         recvq = line;
 373         return ret;
 374 }
 375
 376 void userrec::AddWriteBuf(const std::string &data)
 377 {
 378         if (*this->GetWriteError())
 379                 return;
 380         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 381         {
 382                 /* Fix by brain - Set the error text BEFORE calling writeopers, because
 383                  * if we dont it'll recursively  call here over and over again trying
 384                  * to repeatedly add the text to the sendq!
 385                  */
 386                 this->SetWriteError("SendQ exceeded");
 387                 WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 388                 return;
 389         }
 390         std::stringstream stream;
 391         stream << sendq << data;
 392         sendq = stream.str();
 393 }
 394
 395 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 396 void userrec::FlushWriteBuf()
 397 {
 398         if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 399         {
 400                 char* tb = (char*)this->sendq.c_str();
 401                 int n_sent = write(this->fd,tb,this->sendq.length());
 402                 if (n_sent == -1)
 403                 {
 404                         this->SetWriteError(strerror(errno));
 405                 }
 406                 else
 407                 {
 408                         // advance the queue
 409                         tb += n_sent;
 410                         this->sendq = tb;
 411                         // update the user's stats counters
 412                         this->bytes_out += n_sent;
 413                         this->cmds_out++;
 414                 }
 415         }
 416 }
 417
 418 void userrec::SetWriteError(const std::string &error)
 419 {
 420         log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 421         // don't try to set the error twice, its already set take the first string.
 422         if (this->WriteError == "")
 423                 this->WriteError = error;
 424 }
 425
 426 const char* userrec::GetWriteError()
 427 {
 428         return this->WriteError.c_str();
 429 }
 430
 431 void AddOper(userrec* user)
 432 {
 433         log(DEBUG,"Oper added to optimization list");
 434         all_opers.push_back(user);
 435 }
 436
 437 void DeleteOper(userrec* user)
 438 {
 439         for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 440         {
 441                 if (*a == user)
 442                 {
 443                         log(DEBUG,"Oper removed from optimization list");
 444                         all_opers.erase(a);
 445                         return;
 446                 }
 447         }
 448 }
 449
 450 void kill_link(userrec *user,const char* r)
 451 {
 452         user_hash::iterator iter = clientlist.find(user->nick);
 453
 454         char reason[MAXBUF];
 455
 456         strlcpy(reason,r,MAXQUIT-1);
 457
 458         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
 459         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
 460         log(DEBUG,"closing fd %d",user->fd);
 461
 462         if (user->registered == 7) {
 463                 purge_empty_chans(user);
 464                 FOREACH_MOD(I_OnUserQuit,OnUserQuit(user,reason));
 465                 WriteCommonExcept(user,"QUIT :%s",reason);
 466         }
 467
 468         user->FlushWriteBuf();
 469
 470         FOREACH_MOD(I_OnUserDisconnect,OnUserDisconnect(user));
 471
 472         if (user->fd > -1)
 473         {
 474                 if (Config->GetIOHook(user->port))
 475                 {
 476                         try
 477                         {
 478                                 Config->GetIOHook(user->port)->OnRawSocketClose(user->fd);
 479                         }
 480                         catch (ModuleException& modexcept)
 481                         {
 482                                 log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
 483                         }
 484                 }
 485                 ServerInstance->SE->DelFd(user->fd);
 486                 user->CloseSocket();
 487         }
 488
 489         // this must come before the WriteOpers so that it doesnt try to fill their buffer with anything
 490         // if they were an oper with +s.
 491         if (user->registered == 7) {
 492                 // fix by brain: only show local quits because we only show local connects (it just makes SENSE)
 493                 if (user->fd > -1)
 494                         WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
 495                 AddWhoWas(user);
 496         }
 497
 498         if (iter != clientlist.end())
 499         {
 500                 log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
 501                 if (user->fd > -1)
 502                 {
 503                         fd_ref_table[user->fd] = NULL;
 504                         if (find(local_users.begin(),local_users.end(),user) != local_users.end())
 505                         {
 506                                 local_users.erase(find(local_users.begin(),local_users.end(),user));
 507                                 log(DEBUG,"Delete local user");
 508                         }
 509                 }
 510                 clientlist.erase(iter);
 511         }
 512         delete user;
 513 }
 514
 515 WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
 516 {
 517         this->host = strdup(user->host);
 518         this->dhost = strdup(user->dhost);
 519         this->ident = strdup(user->ident);
 520         this->server = user->server;
 521         this->gecos = strdup(user->fullname);
 522 }
 523
 524 WhoWasGroup::~WhoWasGroup()
 525 {
 526         if (host)
 527                 free(host);
 528         if (dhost)
 529                 free(dhost);
 530         if (ident)
 531                 free(ident);
 532         if (gecos)
 533                 free(gecos);
 534 }
 535
 536 /* adds or updates an entry in the whowas list */
 537 void AddWhoWas(userrec* u)
 538 {
 539         whowas_users::iterator iter = whowas.find(u->nick);
 540         if (iter == whowas.end())
 541         {
 542                 whowas_set* n = new whowas_set;
 543                 WhoWasGroup *a = new WhoWasGroup(u);
 544                 n->push_back(a);
 545                 whowas[u->nick] = n;
 546         }
 547         else
 548         {
 549                 whowas_set* group = (whowas_set*)iter->second;
 550                 if (group->size() > 10)
 551                 {
 552                         WhoWasGroup *a = (WhoWasGroup*)*(group->begin());
 553                         delete a;
 554                         group->pop_front();
 555                 }
 556                 WhoWasGroup *a = new WhoWasGroup(u);
 557                 group->push_back(a);
 558         }
 559 }
 560
 561 /* every hour, run this function which removes all entries over 3 days */
 562 void MaintainWhoWas(time_t TIME)
 563 {
 564         for (whowas_users::iterator iter = whowas.begin(); iter != whowas.end(); iter++)
 565         {
 566                 whowas_set* n = (whowas_set*)iter->second;
 567                 if (n->size())
 568                 {
 569                         while ((n->begin() != n->end()) && ((*n->begin())->signon < TIME - 259200)) // 3 days
 570                         {
 571                                 WhoWasGroup *a = *(n->begin());
 572                                 delete a;
 573                                 n->erase(n->begin());
 574                         }
 575                 }
 576         }
 577 }
 578
 579 /* add a client connection to the sockets list */
 580 void AddClient(int socket, int port, bool iscached, in_addr ip4)
 581 {
 582         std::string tempnick = ConvToStr(socket) + "-unknown";
 583         user_hash::iterator iter = clientlist.find(tempnick);
 584         const char *ipaddr = inet_ntoa(ip4);
 585         int j = 0;
 586
 587         // fix by brain.
 588         // as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 589         // using one as a registered connection. As theyre per fd, we can also safely assume
 590         // that we wont have collisions. Therefore, if the nick exists in the list, its only
 591         // used by a dead socket, erase the iterator so that the new client may reclaim it.
 592         // this was probably the cause of 'server ignores me when i hammer it with reconnects'
 593         // issue in earlier alphas/betas
 594         if (iter != clientlist.end())
 595         {
 596                 userrec* goner = iter->second;
 597                 delete goner;
 598                 clientlist.erase(iter);
 599         }
 600
 601         log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
 602
 603         clientlist[tempnick] = new userrec();
 604         clientlist[tempnick]->fd = socket;
 605         strlcpy(clientlist[tempnick]->nick,tempnick.c_str(),NICKMAX-1);
 606
 607         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
 608         for (char* temp = (char*)ipaddr; *temp && j < 64; temp++, j++)
 609                 clientlist[tempnick]->dhost[j] = clientlist[tempnick]->host[j] = *temp;
 610         clientlist[tempnick]->dhost[j] = clientlist[tempnick]->host[j] = 0;
 611
 612         clientlist[tempnick]->server = (char*)FindServerNamePtr(Config->ServerName);
 613         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
 614         strcpy(clientlist[tempnick]->ident, "unknown");
 615
 616         clientlist[tempnick]->registered = 0;
 617         clientlist[tempnick]->signon = TIME + Config->dns_timeout;
 618         clientlist[tempnick]->lastping = 1;
 619         clientlist[tempnick]->ip4 = ip4;
 620         clientlist[tempnick]->port = port;
 621
 622         // set the registration timeout for this user
 623         unsigned long class_regtimeout = 90;
 624         int class_flood = 0;
 625         long class_threshold = 5;
 626         long class_sqmax = 262144;      // 256kb
 627         long class_rqmax = 4096;        // 4k
 628
 629         for (ClassVector::iterator i = Config->Classes.begin(); i != Config->Classes.end(); i++)
 630         {
 631                 if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str())))
 632                 {
 633                         class_regtimeout = (unsigned long)i->registration_timeout;
 634                         class_flood = i->flood;
 635                         clientlist[tempnick]->pingmax = i->pingtime;
 636                         class_threshold = i->threshold;
 637                         class_sqmax = i->sendqmax;
 638                         class_rqmax = i->recvqmax;
 639                         break;
 640                 }
 641         }
 642
 643         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax + Config->dns_timeout;
 644         clientlist[tempnick]->timeout = TIME+class_regtimeout;
 645         clientlist[tempnick]->flood = class_flood;
 646         clientlist[tempnick]->threshold = class_threshold;
 647         clientlist[tempnick]->sendqmax = class_sqmax;
 648         clientlist[tempnick]->recvqmax = class_rqmax;
 649
 650         fd_ref_table[socket] = clientlist[tempnick];
 651         local_users.push_back(clientlist[tempnick]);
 652
 653         if (local_users.size() > Config->SoftLimit)
 654         {
 655                 kill_link(clientlist[tempnick],"No more connections allowed");
 656                 return;
 657         }
 658
 659         if (local_users.size() >= MAXCLIENTS)
 660         {
 661                 kill_link(clientlist[tempnick],"No more connections allowed");
 662                 return;
 663         }
 664
 665         // this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 666         // its a pretty big but for the moment valid assumption:
 667         // file descriptors are handed out starting at 0, and are recycled as theyre freed.
 668         // therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 669         // irc server at once (or the irc server otherwise initiating this many connections, files etc)
 670         // which for the time being is a physical impossibility (even the largest networks dont have more
 671         // than about 10,000 users on ONE server!)
 672         if ((unsigned)socket >= MAX_DESCRIPTORS)
 673         {
 674                 kill_link(clientlist[tempnick],"Server is full");
 675                 return;
 676         }
 677         char* e = matches_exception(ipaddr);
 678         if (!e)
 679         {
 680                 char* r = matches_zline(ipaddr);
 681                 if (r)
 682                 {
 683                         char reason[MAXBUF];
 684                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
 685                         kill_link(clientlist[tempnick],reason);
 686                         return;
 687                 }
 688         }
 689
 690         ServerInstance->SE->AddFd(socket,true,X_ESTAB_CLIENT);
 691
 692         WriteServ(clientlist[tempnick]->fd,"NOTICE Auth :*** Looking up your hostname...");
 693 }
 694
 695 long FindMatchingGlobal(userrec* user)
 696 {
 697         long x = 0;
 698         for (user_hash::const_iterator a = clientlist.begin(); a != clientlist.end(); a++)
 699         {
 700                 if (a->second->ip4.s_addr == user->ip4.s_addr)
 701                         x++;
 702         }
 703         return x;
 704 }
 705
 706 long FindMatchingLocal(userrec* user)
 707 {
 708         long x = 0;
 709         for (std::vector<userrec*>::const_iterator a = local_users.begin(); a != local_users.end(); a++)
 710         {
 711                 userrec* comp = (userrec*)(*a);
 712                 if (comp->ip4.s_addr == user->ip4.s_addr)
 713                         x++;
 714         }
 715         return x;
 716 }
 717
 718 void FullConnectUser(userrec* user, CullList* Goners)
 719 {
 720         ServerInstance->stats->statsConnects++;
 721         user->idle_lastmsg = TIME;
 722         log(DEBUG,"ConnectUser: %s",user->nick);
 723
 724         ConnectClass a = GetClass(user);
 725
 726         if (a.type == CC_DENY)
 727         {
 728                 Goners->AddItem(user,"Unauthorised connection");
 729                 return;
 730         }
 731         if ((*(a.pass.c_str())) && (!user->haspassed))
 732         {
 733                 Goners->AddItem(user,"Invalid password");
 734                 return;
 735         }
 736         if (FindMatchingLocal(user) > a.maxlocal)
 737         {
 738                 Goners->AddItem(user,"No more connections allowed from your host via this connect class (local)");
 739                 WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s",a.maxlocal,(char*)inet_ntoa(user->ip4));
 740                 return;
 741         }
 742         else if (FindMatchingGlobal(user) > a.maxglobal)
 743         {
 744                 Goners->AddItem(user,"No more connections allowed from your host via this connect class (global)");
 745                 WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a.maxglobal,(char*)inet_ntoa(user->ip4));
 746                 return;
 747         }
 748
 749         char match_against[MAXBUF];
 750         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
 751         char* e = matches_exception(match_against);
 752         if (!e)
 753         {
 754                 char* r = matches_gline(match_against);
 755                 if (r)
 756                 {
 757                         char reason[MAXBUF];
 758                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
 759                         Goners->AddItem(user,reason);
 760                         return;
 761                 }
 762                 r = matches_kline(user->host);
 763                 if (r)
 764                 {
 765                         char reason[MAXBUF];
 766                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
 767                         Goners->AddItem(user,reason);
 768                         return;
 769                 }
 770         }
 771
 772
 773         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Config->Network);
 774         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Config->Network,user->nick,user->ident,user->host);
 775         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,Config->ServerName,VERSION);
 776         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
 777         WriteServ(user->fd,"004 %s %s %s iowghrasxRVSCWBG lvhopsmntikrcaqbegIOLQRSKVHGCNT vhobeIaqglk",user->nick,Config->ServerName,VERSION);
 778         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
 779         // so i'd better split it :)
 780         std::stringstream out(Config->data005);
 781         std::string token = "";
 782         std::string line5 = "";
 783         int token_counter = 0;
 784         while (!out.eof())
 785         {
 786                 out >> token;
 787                 line5 = line5 + token + " ";
 788                 token_counter++;
 789                 if ((token_counter >= 13) || (out.eof() == true))
 790                 {
 791                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
 792                         line5 = "";
 793                         token_counter = 0;
 794                 }
 795         }
 796         ShowMOTD(user);
 797
 798         // fix 3 by brain, move registered = 7 below these so that spurious modes and host changes dont go out
 799         // onto the network and produce 'fake direction'
 800         FOREACH_MOD(I_OnUserConnect,OnUserConnect(user));
 801         FOREACH_MOD(I_OnGlobalConnect,OnGlobalConnect(user));
 802         user->registered = 7;
 803         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));
 804 }
 805
 806 /* re-allocates a nick in the user_hash after they change nicknames,
 807  * returns a pointer to the new user as it may have moved */
 808
 809 userrec* ReHashNick(char* Old, char* New)
 810 {
 811         //user_hash::iterator newnick;
 812         user_hash::iterator oldnick = clientlist.find(Old);
 813
 814         log(DEBUG,"ReHashNick: %s %s",Old,New);
 815
 816         if (!strcasecmp(Old,New))
 817         {
 818                 log(DEBUG,"old nick is new nick, skipping");
 819                 return oldnick->second;
 820         }
 821
 822         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
 823
 824         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
 825
 826         userrec* olduser = oldnick->second;
 827         clientlist[New] = olduser;
 828         clientlist.erase(oldnick);
 829
 830         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
 831
 832         return clientlist[New];
 833 }
 834
 835 void force_nickchange(userrec* user,const char* newnick)
 836 {
 837         char nick[MAXBUF];
 838         int MOD_RESULT = 0;
 839
 840         *nick = 0;
 841
 842         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(user,newnick));
 843         if (MOD_RESULT) {
 844                 ServerInstance->stats->statsCollisions++;
 845                 kill_link(user,"Nickname collision");
 846                 return;
 847         }
 848         if (matches_qline(newnick))
 849         {
 850                 ServerInstance->stats->statsCollisions++;
 851                 kill_link(user,"Nickname collision");
 852                 return;
 853         }
 854
 855         if (user)
 856         {
 857                 if (newnick)
 858                 {
 859                         strlcpy(nick,newnick,MAXBUF-1);
 860                 }
 861                 if (user->registered == 7)
 862                 {
 863                         char* pars[1];
 864                         pars[0] = nick;
 865                         std::string cmd = "NICK";
 866                         ServerInstance->Parser->CallHandler(cmd,pars,1,user);
 867                 }
 868         }
 869 }