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