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