src/users.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
   6  *                     E-mail:
   7  *              <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *          the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 #include "inspircd_config.h"
  18 #include "configreader.h"
  19 #include "channels.h"
  20 #include "connection.h"
  21 #include "users.h"
  22 #include "inspircd.h"
  23 #include <stdarg.h>
  24 #include "inspstring.h"
  25 #include "commands.h"
  26
  27 #include "typedefs.h"
  28 #include "socketengine.h"
  29 #include "hashcomp.h"
  30 #include "wildcard.h"
  31 #include "xline.h"
  32 #include "cull_list.h"
  33
  34 irc::whowas::whowas_users whowas;
  35 static unsigned long already_sent[MAX_DESCRIPTORS] = {0};
  36
  37 typedef std::map<irc::string,char*> opertype_t;
  38 typedef opertype_t operclass_t;
  39
  40 opertype_t opertypes;
  41 operclass_t operclass;
  42
  43 /* XXX: Used for speeding up WriteCommon operations */
  44 unsigned long uniq_id = 0;
  45
  46 bool InitTypes(ServerConfig* conf, const char* tag)
  47 {
  48         for (opertype_t::iterator n = opertypes.begin(); n != opertypes.end(); n++)
  49         {
  50                 if (n->second)
  51                         delete[] n->second;
  52         }
  53
  54         opertypes.clear();
  55         return true;
  56 }
  57
  58 bool InitClasses(ServerConfig* conf, const char* tag)
  59 {
  60         for (operclass_t::iterator n = operclass.begin(); n != operclass.end(); n++)
  61         {
  62                 if (n->second)
  63                         delete[] n->second;
  64         }
  65
  66         operclass.clear();
  67         return true;
  68 }
  69
  70 bool DoType(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
  71 {
  72         char* TypeName = (char*)values[0];
  73         char* Classes = (char*)values[1];
  74
  75         opertypes[TypeName] = strdup(Classes);
  76         conf->GetInstance()->Log(DEBUG,"Read oper TYPE '%s' with classes '%s'",TypeName,Classes);
  77         return true;
  78 }
  79
  80 bool DoClass(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
  81 {
  82         char* ClassName = (char*)values[0];
  83         char* CommandList = (char*)values[1];
  84
  85         operclass[ClassName] = strdup(CommandList);
  86         conf->GetInstance()->Log(DEBUG,"Read oper CLASS '%s' with commands '%s'",ClassName,CommandList);
  87         return true;
  88 }
  89
  90 bool DoneClassesAndTypes(ServerConfig* conf, const char* tag)
  91 {
  92         return true;
  93 }
  94
  95 bool userrec::ProcessNoticeMasks(const char *sm)
  96 {
  97         bool adding = true;
  98         const char *c = sm;
  99
 100         while (c && *c)
 101         {
 102                 switch (*c)
 103                 {
 104                         case '+':
 105                                 adding = true;
 106                                 break;
 107                         case '-':
 108                                 adding = false;
 109                                 break;
 110                         default:
 111                                 if ((*c >= 'A') && (*c <= 'z'))
 112                                         this->SetNoticeMask(*c, adding);
 113                                 break;
 114                 }
 115
 116                 *c++;
 117         }
 118
 119         return true;
 120 }
 121
 122 void userrec::StartDNSLookup()
 123 {
 124         ServerInstance->Log(DEBUG,"Commencing reverse lookup");
 125         try
 126         {
 127                 ServerInstance->Log(DEBUG,"Passing instance: %08x",this->ServerInstance);
 128                 res_reverse = new UserResolver(this->ServerInstance, this, this->GetIPString(), false);
 129                 this->ServerInstance->AddResolver(res_reverse);
 130         }
 131         catch (ModuleException& e)
 132         {
 133                 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 134         }
 135 }
 136
 137 UserResolver::UserResolver(InspIRCd* Instance, userrec* user, std::string to_resolve, bool forward) :
 138         Resolver(Instance, to_resolve, forward ? DNS_QUERY_FORWARD : DNS_QUERY_REVERSE), bound_user(user)
 139 {
 140         this->fwd = forward;
 141         this->bound_fd = user->fd;
 142 }
 143
 144 void UserResolver::OnLookupComplete(const std::string &result)
 145 {
 146         if ((!this->fwd) && (ServerInstance->fd_ref_table[this->bound_fd] == this->bound_user))
 147         {
 148                 ServerInstance->Log(DEBUG,"Commencing forward lookup");
 149                 this->bound_user->stored_host = result;
 150                 try
 151                 {
 152                         /* Check we didnt time out */
 153                         if (this->bound_user->registered != REG_ALL)
 154                         {
 155                                 bound_user->res_forward = new UserResolver(this->ServerInstance, this->bound_user, result, true);
 156                                 this->ServerInstance->AddResolver(bound_user->res_forward);
 157                         }
 158                 }
 159                 catch (ModuleException& e)
 160                 {
 161                         ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 162                 }
 163         }
 164         else if ((this->fwd) && (ServerInstance->fd_ref_table[this->bound_fd] == this->bound_user))
 165         {
 166                 /* Both lookups completed */
 167                 if (this->bound_user->GetIPString() == result)
 168                 {
 169                         std::string hostname = this->bound_user->stored_host;
 170                         if (hostname.length() < 65)
 171                         {
 172                                 /* Check we didnt time out */
 173                                 if (this->bound_user->registered != REG_ALL)
 174                                 {
 175                                         /* Hostnames starting with : are not a good thing (tm) */
 176                                         if (*(hostname.c_str()) == ':')
 177                                                 hostname = "0" + hostname;
 178
 179                                         this->bound_user->WriteServ("NOTICE Auth :*** Found your hostname (%s)", hostname.c_str());
 180                                         this->bound_user->dns_done = true;
 181                                         strlcpy(this->bound_user->dhost, hostname.c_str(),64);
 182                                         strlcpy(this->bound_user->host, hostname.c_str(),64);
 183                                 }
 184                         }
 185                         else
 186                         {
 187                                 this->bound_user->WriteServ("NOTICE Auth :*** Your hostname is longer than the maximum of 64 characters, using your IP address (%s) instead.", this->bound_user->GetIPString());
 188                         }
 189                 }
 190                 else
 191                 {
 192                         this->bound_user->WriteServ("NOTICE Auth :*** Your hostname does not match up with your IP address. Sorry, using your IP address (%s) instead.", this->bound_user->GetIPString());
 193                 }
 194         }
 195 }
 196
 197 void UserResolver::OnError(ResolverError e, const std::string &errormessage)
 198 {
 199         if (ServerInstance->fd_ref_table[this->bound_fd] == this->bound_user)
 200         {
 201                 /* Error message here */
 202                 this->bound_user->WriteServ("NOTICE Auth :*** Could not resolve your hostname, using your IP address (%s) instead.", this->bound_user->GetIPString());
 203                 this->bound_user->dns_done = true;
 204         }
 205 }
 206
 207
 208 bool userrec::IsNoticeMaskSet(unsigned char sm)
 209 {
 210         return (snomasks[sm-65]);
 211 }
 212
 213 void userrec::SetNoticeMask(unsigned char sm, bool value)
 214 {
 215         snomasks[sm-65] = value;
 216 }
 217
 218 const char* userrec::FormatNoticeMasks()
 219 {
 220         static char data[MAXBUF];
 221         int offset = 0;
 222
 223         for (int n = 0; n < 64; n++)
 224         {
 225                 if (snomasks[n])
 226                         data[offset++] = n+65;
 227         }
 228
 229         data[offset] = 0;
 230         return data;
 231 }
 232
 233
 234
 235 bool userrec::IsModeSet(unsigned char m)
 236 {
 237         return (modes[m-65]);
 238 }
 239
 240 void userrec::SetMode(unsigned char m, bool value)
 241 {
 242         modes[m-65] = value;
 243 }
 244
 245 const char* userrec::FormatModes()
 246 {
 247         static char data[MAXBUF];
 248         int offset = 0;
 249         for (int n = 0; n < 64; n++)
 250         {
 251                 if (modes[n])
 252                         data[offset++] = n+65;
 253         }
 254         data[offset] = 0;
 255         return data;
 256 }
 257
 258 userrec::userrec(InspIRCd* Instance) : ServerInstance(Instance)
 259 {
 260         ServerInstance->Log(DEBUG,"userrec::userrec(): Instance: %08x",ServerInstance);
 261         // the PROPER way to do it, AVOID bzero at *ALL* costs
 262         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = 0;
 263         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 264         reset_due = ServerInstance->Time();
 265         lines_in = fd = lastping = signon = idle_lastmsg = nping = registered = 0;
 266         timeout = flood = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 267         haspassed = dns_done = false;
 268         recvq = "";
 269         sendq = "";
 270         WriteError = "";
 271         res_forward = res_reverse = NULL;
 272         ip = NULL;
 273         chans.clear();
 274         invites.clear();
 275         chans.resize(MAXCHANS);
 276         memset(modes,0,sizeof(modes));
 277
 278         for (unsigned int n = 0; n < MAXCHANS; n++)
 279         {
 280                 ucrec* x = new ucrec();
 281                 chans[n] = x;
 282                 x->channel = NULL;
 283                 x->uc_modes = 0;
 284         }
 285 }
 286
 287 userrec::~userrec()
 288 {
 289         for (std::vector<ucrec*>::iterator n = chans.begin(); n != chans.end(); n++)
 290         {
 291                 ucrec* x = (ucrec*)*n;
 292                 delete x;
 293         }
 294
 295         if (ip)
 296         {
 297                 if (this->GetProtocolFamily() == AF_INET)
 298                 {
 299                         delete (sockaddr_in*)ip;
 300                 }
 301 #ifdef SUPPORT_IP6LINKS
 302                 else
 303                 {
 304                         delete (sockaddr_in6*)ip;
 305                 }
 306 #endif
 307         }
 308 }
 309
 310 /* XXX - minor point, other *Host functions return a char *, this one creates it. Might be nice to be consistant? */
 311 void userrec::MakeHost(char* nhost)
 312 {
 313         /* This is much faster than snprintf */
 314         char* t = nhost;
 315         for(char* n = ident; *n; n++)
 316                 *t++ = *n;
 317         *t++ = '@';
 318         for(char* n = host; *n; n++)
 319                 *t++ = *n;
 320         *t = 0;
 321 }
 322
 323 void userrec::CloseSocket()
 324 {
 325         shutdown(this->fd,2);
 326         close(this->fd);
 327 }
 328
 329 char* userrec::GetFullHost()
 330 {
 331         static char result[MAXBUF];
 332         char* t = result;
 333         for(char* n = nick; *n; n++)
 334                 *t++ = *n;
 335         *t++ = '!';
 336         for(char* n = ident; *n; n++)
 337                 *t++ = *n;
 338         *t++ = '@';
 339         for(char* n = dhost; *n; n++)
 340                 *t++ = *n;
 341         *t = 0;
 342         return result;
 343 }
 344
 345 char* userrec::MakeWildHost()
 346 {
 347         static char nresult[MAXBUF];
 348         char* t = nresult;
 349         *t++ = '*';     *t++ = '!';
 350         *t++ = '*';     *t++ = '@';
 351         for(char* n = dhost; *n; n++)
 352                 *t++ = *n;
 353         *t = 0;
 354         return nresult;
 355 }
 356
 357 int userrec::ReadData(void* buffer, size_t size)
 358 {
 359         if (this->fd > -1)
 360         {
 361                 return read(this->fd, buffer, size);
 362         }
 363         else
 364                 return 0;
 365 }
 366
 367
 368 char* userrec::GetFullRealHost()
 369 {
 370         static char fresult[MAXBUF];
 371         char* t = fresult;
 372         for(char* n = nick; *n; n++)
 373                 *t++ = *n;
 374         *t++ = '!';
 375         for(char* n = ident; *n; n++)
 376                 *t++ = *n;
 377         *t++ = '@';
 378         for(char* n = host; *n; n++)
 379                 *t++ = *n;
 380         *t = 0;
 381         return fresult;
 382 }
 383
 384 bool userrec::IsInvited(irc::string &channel)
 385 {
 386         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 387         {
 388                 irc::string compare = i->channel;
 389
 390                 if (compare == channel)
 391                 {
 392                         return true;
 393                 }
 394         }
 395         return false;
 396 }
 397
 398 InvitedList* userrec::GetInviteList()
 399 {
 400         return &invites;
 401 }
 402
 403 void userrec::InviteTo(irc::string &channel)
 404 {
 405         Invited i;
 406         i.channel = channel;
 407         invites.push_back(i);
 408 }
 409
 410 void userrec::RemoveInvite(irc::string &channel)
 411 {
 412         ServerInstance->Log(DEBUG,"Removing invites");
 413
 414         if (invites.size())
 415         {
 416                 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 417                 {
 418                         irc::string compare = i->channel;
 419
 420                         if (compare == channel)
 421                         {
 422                                 invites.erase(i);
 423                                 return;
 424                         }
 425                 }
 426         }
 427 }
 428
 429 bool userrec::HasPermission(const std::string &command)
 430 {
 431         char* mycmd;
 432         char* savept;
 433         char* savept2;
 434
 435         /*
 436          * users on remote servers can completely bypass all permissions based checks.
 437          * This prevents desyncs when one server has different type/class tags to another.
 438          * That having been said, this does open things up to the possibility of source changes
 439          * allowing remote kills, etc - but if they have access to the src, they most likely have
 440          * access to the conf - so it's an end to a means either way.
 441          */
 442         if (!IS_LOCAL(this))
 443                 return true;
 444
 445         // are they even an oper at all?
 446         if (*this->oper)
 447         {
 448                 opertype_t::iterator iter_opertype = opertypes.find(this->oper);
 449                 if (iter_opertype != opertypes.end())
 450                 {
 451                         char* Classes = strdup(iter_opertype->second);
 452                         char* myclass = strtok_r(Classes," ",&savept);
 453                         while (myclass)
 454                         {
 455                                 operclass_t::iterator iter_operclass = operclass.find(myclass);
 456                                 if (iter_operclass != operclass.end())
 457                                 {
 458                                         char* CommandList = strdup(iter_operclass->second);
 459                                         mycmd = strtok_r(CommandList," ",&savept2);
 460                                         while (mycmd)
 461                                         {
 462                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 463                                                 {
 464                                                         free(Classes);
 465                                                         free(CommandList);
 466                                                         return true;
 467                                                 }
 468                                                 mycmd = strtok_r(NULL," ",&savept2);
 469                                         }
 470                                         free(CommandList);
 471                                 }
 472                                 myclass = strtok_r(NULL," ",&savept);
 473                         }
 474                         free(Classes);
 475                 }
 476         }
 477         return false;
 478 }
 479
 480
 481 bool userrec::AddBuffer(std::string a)
 482 {
 483         std::string::size_type i = a.rfind('\r');
 484
 485         while (i != std::string::npos)
 486         {
 487                 b.erase(i, 1);
 488                 i = a.rfind('\r');
 489         }
 490
 491         if (a.length())
 492                 recvq.append(a);
 493
 494         if (recvq.length() > (unsigned)this->recvqmax)
 495         {
 496                 this->SetWriteError("RecvQ exceeded");
 497                 ServerInstance->WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 498                 return false;
 499         }
 500
 501         return true;
 502 }
 503
 504 bool userrec::BufferIsReady()
 505 {
 506         return (recvq.find('\n') != std::string::npos);
 507 }
 508
 509 void userrec::ClearBuffer()
 510 {
 511         recvq = "";
 512 }
 513
 514 std::string userrec::GetBuffer()
 515 {
 516         if (!recvq.length())
 517                 return "";
 518
 519         /* Strip any leading \r or \n off the string.
 520          * Usually there are only one or two of these,
 521          * so its is computationally cheap to do.
 522          */
 523         while ((*recvq.begin() == '\r') || (*recvq.begin() == '\n'))
 524                 recvq.erase(recvq.begin());
 525
 526         for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 527         {
 528                 /* Find the first complete line, return it as the
 529                  * result, and leave the recvq as whats left
 530                  */
 531                 if (*x == '\n')
 532                 {
 533                         std::string ret = std::string(recvq.begin(), x);
 534                         recvq.erase(recvq.begin(), x + 1);
 535                         return ret;
 536                 }
 537         }
 538         return "";
 539 }
 540
 541 void userrec::AddWriteBuf(const std::string &data)
 542 {
 543         if (*this->GetWriteError())
 544                 return;
 545
 546         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 547         {
 548                 /*
 549                  * Fix by brain - Set the error text BEFORE calling writeopers, because
 550                  * if we dont it'll recursively  call here over and over again trying
 551                  * to repeatedly add the text to the sendq!
 552                  */
 553                 this->SetWriteError("SendQ exceeded");
 554                 ServerInstance->WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 555                 return;
 556         }
 557
 558         if (data.length() > 512)
 559         {
 560                 std::string newdata(data);
 561                 newdata.resize(510);
 562                 newdata.append("\r\n");
 563                 sendq.append(newdata);
 564         }
 565         else
 566         {
 567                 sendq.append(data);
 568         }
 569 }
 570
 571 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 572 void userrec::FlushWriteBuf()
 573 {
 574         if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 575         {
 576                 const char* tb = this->sendq.c_str();
 577                 int n_sent = write(this->fd,tb,this->sendq.length());
 578                 if (n_sent == -1)
 579                 {
 580                         if (errno != EAGAIN)
 581                                 this->SetWriteError(strerror(errno));
 582                 }
 583                 else
 584                 {
 585                         // advance the queue
 586                         tb += n_sent;
 587                         this->sendq = tb;
 588                         // update the user's stats counters
 589                         this->bytes_out += n_sent;
 590                         this->cmds_out++;
 591                 }
 592         }
 593 }
 594
 595 void userrec::SetWriteError(const std::string &error)
 596 {
 597         ServerInstance->Log(DEBUG,"SetWriteError: %s",error.c_str());
 598         // don't try to set the error twice, its already set take the first string.
 599         if (!this->WriteError.length())
 600         {
 601                 ServerInstance->Log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 602                 this->WriteError = error;
 603         }
 604 }
 605
 606 const char* userrec::GetWriteError()
 607 {
 608         return this->WriteError.c_str();
 609 }
 610
 611 void userrec::Oper(const std::string &opertype)
 612 {
 613         this->modes[UM_OPERATOR] = 1;
 614         this->WriteServ("MODE %s :+o", this->nick);
 615         FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 616         ServerInstance->Log(DEFAULT,"OPER: %s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 617         strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 618         ServerInstance->all_opers.push_back(this);
 619         FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype));
 620 }
 621
 622 void userrec::UnOper()
 623 {
 624         if (*this->oper)
 625         {
 626                 *this->oper = 0;
 627                 this->modes[UM_OPERATOR] = 0;
 628                 for (std::vector<userrec*>::iterator a = ServerInstance->all_opers.begin(); a < ServerInstance->all_opers.end(); a++)
 629                 {
 630                         if (*a == this)
 631                         {
 632                                 ServerInstance->Log(DEBUG,"Oper removed from optimization list");
 633                                 ServerInstance->all_opers.erase(a);
 634                                 return;
 635                         }
 636                 }
 637         }
 638 }
 639
 640 void userrec::QuitUser(InspIRCd* Instance, userrec *user,const std::string &quitreason)
 641 {
 642         user_hash::iterator iter = Instance->clientlist.find(user->nick);
 643
 644 /*
 645  * I'm pretty sure returning here is causing a desync when part of the net thinks a user is gone,
 646  * and another part doesn't. We want to broadcast the quit/kill before bailing so the net stays in sync.
 647  *
 648  * I can't imagine this blowing up, so I'm commenting it out. We still check
 649  * before playing with a bad iterator below in our if(). DISCUSS THIS BEFORE YOU DO ANYTHING. --w00t
 650  *
 651  *      if (iter == clientlist.end())
 652  *              return;
 653  */
 654         std::string reason = quitreason;
 655
 656         if (reason.length() > MAXQUIT - 1)
 657                 reason.resize(MAXQUIT - 1);
 658
 659         if (IS_LOCAL(user))
 660                 user->Write("ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason.c_str());
 661
 662         if (user->registered == REG_ALL)
 663         {
 664                 user->PurgeEmptyChannels();
 665                 FOREACH_MOD_I(Instance,I_OnUserQuit,OnUserQuit(user,reason));
 666                 user->WriteCommonExcept("QUIT :%s",reason.c_str());
 667         }
 668
 669         if (IS_LOCAL(user))
 670                 user->FlushWriteBuf();
 671
 672         FOREACH_MOD_I(Instance,I_OnUserDisconnect,OnUserDisconnect(user));
 673
 674         if (IS_LOCAL(user))
 675         {
 676                 if (Instance->Config->GetIOHook(user->GetPort()))
 677                 {
 678                         try
 679                         {
 680                                 Instance->Config->GetIOHook(user->GetPort())->OnRawSocketClose(user->fd);
 681                         }
 682                         catch (ModuleException& modexcept)
 683                         {
 684                                 Instance->Log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
 685                         }
 686                 }
 687
 688                 Instance->SE->DelFd(user->fd);
 689                 user->CloseSocket();
 690         }
 691
 692         /*
 693          * this must come before the ServerInstance->WriteOpers so that it doesnt try to fill their buffer with anything
 694          * if they were an oper with +s.
 695          *
 696          * XXX -
 697          * In the current implementation, we only show local quits, as we only show local connects. With
 698          * the proposed implmentation of snomasks however, this will likely change in the (near?) future.
 699          */
 700         if (user->registered == REG_ALL)
 701         {
 702                 if (IS_LOCAL(user))
 703                         Instance->WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason.c_str());
 704                 user->AddToWhoWas();
 705         }
 706
 707         if (iter != Instance->clientlist.end())
 708         {
 709                 Instance->Log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
 710                 if (IS_LOCAL(user))
 711                 {
 712                         Instance->fd_ref_table[user->fd] = NULL;
 713                         if (find(Instance->local_users.begin(),Instance->local_users.end(),user) != Instance->local_users.end())
 714                                 Instance->local_users.erase(find(Instance->local_users.begin(),Instance->local_users.end(),user));
 715                 }
 716                 Instance->clientlist.erase(iter);
 717                 DELETE(user);
 718         }
 719 }
 720
 721 namespace irc
 722 {
 723         namespace whowas
 724         {
 725
 726                 WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
 727                 {
 728                         this->host = strdup(user->host);
 729                         this->dhost = strdup(user->dhost);
 730                         this->ident = strdup(user->ident);
 731                         this->server = user->server;
 732                         this->gecos = strdup(user->fullname);
 733                 }
 734
 735                 WhoWasGroup::~WhoWasGroup()
 736                 {
 737                         if (host)
 738                                 free(host);
 739                         if (dhost)
 740                                 free(dhost);
 741                         if (ident)
 742                                 free(ident);
 743                         if (gecos)
 744                                 free(gecos);
 745                 }
 746
 747                 /* every hour, run this function which removes all entries over 3 days */
 748                 void MaintainWhoWas(time_t t)
 749                 {
 750                         for (whowas_users::iterator iter = ::whowas.begin(); iter != ::whowas.end(); iter++)
 751                         {
 752                                 whowas_set* n = (whowas_set*)iter->second;
 753                                 if (n->size())
 754                                 {
 755                                         while ((n->begin() != n->end()) && ((*n->begin())->signon < t - 259200)) // 3 days
 756                                         {
 757                                                 WhoWasGroup *a = *(n->begin());
 758                                                 DELETE(a);
 759                                                 n->erase(n->begin());
 760                                         }
 761                                 }
 762                         }
 763                 }
 764         };
 765 };
 766
 767 /* adds or updates an entry in the whowas list */
 768 void userrec::AddToWhoWas()
 769 {
 770         irc::whowas::whowas_users::iterator iter = whowas.find(this->nick);
 771
 772         if (iter == whowas.end())
 773         {
 774                 irc::whowas::whowas_set* n = new irc::whowas::whowas_set;
 775                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 776                 n->push_back(a);
 777                 whowas[this->nick] = n;
 778         }
 779         else
 780         {
 781                 irc::whowas::whowas_set* group = (irc::whowas::whowas_set*)iter->second;
 782
 783                 if (group->size() > 10)
 784                 {
 785                         irc::whowas::WhoWasGroup *a = (irc::whowas::WhoWasGroup*)*(group->begin());
 786                         DELETE(a);
 787                         group->pop_front();
 788                 }
 789
 790                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 791                 group->push_back(a);
 792         }
 793 }
 794
 795 /* add a client connection to the sockets list */
 796 void userrec::AddClient(InspIRCd* Instance, int socket, int port, bool iscached, insp_inaddr ip)
 797 {
 798         std::string tempnick = ConvToStr(socket) + "-unknown";
 799         user_hash::iterator iter = Instance->clientlist.find(tempnick);
 800         const char *ipaddr = insp_ntoa(ip);
 801         userrec* _new;
 802         int j = 0;
 803
 804         /*
 805          * fix by brain.
 806          * as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 807          * using one as a registered connection. As they are per fd, we can also safely assume
 808          * that we wont have collisions. Therefore, if the nick exists in the list, its only
 809          * used by a dead socket, erase the iterator so that the new client may reclaim it.
 810          * this was probably the cause of 'server ignores me when i hammer it with reconnects'
 811          * issue in earlier alphas/betas
 812          */
 813         if (iter != Instance->clientlist.end())
 814         {
 815                 userrec* goner = iter->second;
 816                 DELETE(goner);
 817                 Instance->clientlist.erase(iter);
 818         }
 819
 820         Instance->Log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
 821
 822         _new = new userrec(Instance);
 823         Instance->clientlist[tempnick] = _new;
 824         _new->fd = socket;
 825         strlcpy(_new->nick,tempnick.c_str(),NICKMAX-1);
 826
 827         _new->server = Instance->FindServerNamePtr(Instance->Config->ServerName);
 828         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
 829         strcpy(_new->ident, "unknown");
 830
 831         _new->registered = REG_NONE;
 832         _new->signon = Instance->Time() + Instance->Config->dns_timeout;
 833         _new->lastping = 1;
 834
 835         Instance->Log(DEBUG,"Setting socket addresses");
 836         _new->SetSockAddr(AF_FAMILY, ipaddr, port);
 837         Instance->Log(DEBUG,"Socket addresses set.");
 838
 839         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
 840         for (const char* temp = _new->GetIPString(); *temp && j < 64; temp++, j++)
 841                 _new->dhost[j] = _new->host[j] = *temp;
 842         _new->dhost[j] = _new->host[j] = 0;
 843
 844         // set the registration timeout for this user
 845         unsigned long class_regtimeout = 90;
 846         int class_flood = 0;
 847         long class_threshold = 5;
 848         long class_sqmax = 262144;      // 256kb
 849         long class_rqmax = 4096;        // 4k
 850
 851         for (ClassVector::iterator i = Instance->Config->Classes.begin(); i != Instance->Config->Classes.end(); i++)
 852         {
 853                 if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str(),true)))
 854                 {
 855                         class_regtimeout = (unsigned long)i->registration_timeout;
 856                         class_flood = i->flood;
 857                         _new->pingmax = i->pingtime;
 858                         class_threshold = i->threshold;
 859                         class_sqmax = i->sendqmax;
 860                         class_rqmax = i->recvqmax;
 861                         break;
 862                 }
 863         }
 864
 865         _new->nping = Instance->Time() + _new->pingmax + Instance->Config->dns_timeout;
 866         _new->timeout = Instance->Time() + class_regtimeout;
 867         _new->flood = class_flood;
 868         _new->threshold = class_threshold;
 869         _new->sendqmax = class_sqmax;
 870         _new->recvqmax = class_rqmax;
 871
 872         Instance->fd_ref_table[socket] = _new;
 873         Instance->local_users.push_back(_new);
 874
 875         if (Instance->local_users.size() > Instance->Config->SoftLimit)
 876         {
 877                 userrec::QuitUser(Instance, _new,"No more connections allowed");
 878                 return;
 879         }
 880
 881         if (Instance->local_users.size() >= MAXCLIENTS)
 882         {
 883                 userrec::QuitUser(Instance, _new,"No more connections allowed");
 884                 return;
 885         }
 886
 887         /*
 888          * XXX -
 889          * this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 890          * its a pretty big but for the moment valid assumption:
 891          * file descriptors are handed out starting at 0, and are recycled as theyre freed.
 892          * therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 893          * irc server at once (or the irc server otherwise initiating this many connections, files etc)
 894          * which for the time being is a physical impossibility (even the largest networks dont have more
 895          * than about 10,000 users on ONE server!)
 896          */
 897         if ((unsigned)socket >= MAX_DESCRIPTORS)
 898         {
 899                 userrec::QuitUser(Instance, _new,"Server is full");
 900                 return;
 901         }
 902         char* e = Instance->XLines->matches_exception(ipaddr);
 903         if (!e)
 904         {
 905                 char* r = Instance->XLines->matches_zline(ipaddr);
 906                 if (r)
 907                 {
 908                         char reason[MAXBUF];
 909                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
 910                         userrec::QuitUser(Instance, _new,reason);
 911                         return;
 912                 }
 913         }
 914
 915         if (socket > -1)
 916         {
 917                 if (!Instance->SE->AddFd(socket,true,X_ESTAB_CLIENT))
 918                 {
 919                         userrec::QuitUser(Instance, _new, "Internal error handling connection");
 920                         return;
 921                 }
 922         }
 923
 924         _new->WriteServ("NOTICE Auth :*** Looking up your hostname...");
 925 }
 926
 927 long userrec::GlobalCloneCount()
 928 {
 929         char u1[1024];
 930         char u2[1024];
 931         long x = 0;
 932         for (user_hash::const_iterator a = ServerInstance->clientlist.begin(); a != ServerInstance->clientlist.end(); a++)
 933         {
 934                 /* We have to match ip's as strings - we don't know what protocol
 935                  * a remote user may be using
 936                  */
 937                 if (!strcasecmp(a->second->GetIPString(u1), this->GetIPString(u2)))
 938                                 x++;
 939         }
 940         return x;
 941 }
 942
 943 long userrec::LocalCloneCount()
 944 {
 945         long x = 0;
 946         for (std::vector<userrec*>::const_iterator a = ServerInstance->local_users.begin(); a != ServerInstance->local_users.end(); a++)
 947         {
 948                 userrec* comp = *a;
 949 #ifdef IPV6
 950                 /* I dont think theres any faster way of matching two ipv6 addresses than memcmp */
 951                 in6_addr* s1 = &(((sockaddr_in6*)comp->ip)->sin6_addr);
 952                 in6_addr* s2 = &(((sockaddr_in6*)this->ip)->sin6_addr);
 953                 if (!memcmp(s1->s6_addr, s2->s6_addr, sizeof(in6_addr)))
 954                         x++;
 955 #else
 956                 in_addr* s1 = &((sockaddr_in*)comp->ip)->sin_addr;
 957                 in_addr* s2 = &((sockaddr_in*)this->ip)->sin_addr;
 958                 if (s1->s_addr == s2->s_addr)
 959                         x++;
 960 #endif
 961         }
 962         return x;
 963 }
 964
 965 void userrec::FullConnect(CullList* Goners)
 966 {
 967         ServerInstance->stats->statsConnects++;
 968         this->idle_lastmsg = ServerInstance->Time();
 969
 970         ConnectClass a = this->GetClass();
 971
 972         if (a.type == CC_DENY)
 973         {
 974                 Goners->AddItem(this,"Unauthorised connection");
 975                 return;
 976         }
 977
 978         if ((*(a.pass.c_str())) && (!this->haspassed))
 979         {
 980                 Goners->AddItem(this,"Invalid password");
 981                 return;
 982         }
 983
 984         if (this->LocalCloneCount() > a.maxlocal)
 985         {
 986                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (local)");
 987                 ServerInstance->WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a.maxlocal, this->GetIPString());
 988                 return;
 989         }
 990         else if (this->GlobalCloneCount() > a.maxglobal)
 991         {
 992                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (global)");
 993                 ServerInstance->WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a.maxglobal, this->GetIPString());
 994                 return;
 995         }
 996
 997         char match_against[MAXBUF];
 998         snprintf(match_against,MAXBUF,"%s@%s", this->ident, this->host);
 999         char* e = ServerInstance->XLines->matches_exception(match_against);
1000
1001         if (!e)
1002         {
1003                 char* r = ServerInstance->XLines->matches_gline(match_against);
1004
1005                 if (r)
1006                 {
1007                         char reason[MAXBUF];
1008                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
1009                         Goners->AddItem(this, reason);
1010                         return;
1011                 }
1012
1013                 r = ServerInstance->XLines->matches_kline(match_against);
1014
1015                 if (r)
1016                 {
1017                         char reason[MAXBUF];
1018                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
1019                         Goners->AddItem(this, reason);
1020                         return;
1021                 }
1022         }
1023
1024
1025         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
1026         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
1027         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
1028         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
1029         this->WriteServ("004 %s %s %s %s %s %s", this->nick, ServerInstance->Config->ServerName, VERSION, ServerInstance->Modes->UserModeList().c_str(), ServerInstance->Modes->ChannelModeList().c_str(), ServerInstance->Modes->ParaModeList().c_str());
1030
1031         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
1032         // so i'd better split it :)
1033         std::stringstream out(ServerInstance->Config->data005);
1034         std::string token = "";
1035         std::string line5 = "";
1036         int token_counter = 0;
1037
1038         while (!out.eof())
1039         {
1040                 out >> token;
1041                 line5 = line5 + token + " ";
1042                 token_counter++;
1043
1044                 if ((token_counter >= 13) || (out.eof() == true))
1045                 {
1046                         this->WriteServ("005 %s %s:are supported by this server", this->nick, line5.c_str());
1047                         line5 = "";
1048                         token_counter = 0;
1049                 }
1050         }
1051
1052         this->ShowMOTD();
1053
1054         /*
1055          * fix 3 by brain, move registered = 7 below these so that spurious modes and host
1056          * changes dont go out onto the network and produce 'fake direction'.
1057          */
1058         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
1059         FOREACH_MOD(I_OnGlobalConnect,OnGlobalConnect(this));
1060         this->registered = REG_ALL;
1061         ServerInstance->WriteOpers("*** Client connecting on port %d: %s!%s@%s [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString());
1062 }
1063
1064 /** userrec::UpdateNick()
1065  * re-allocates a nick in the user_hash after they change nicknames,
1066  * returns a pointer to the new user as it may have moved
1067  */
1068 userrec* userrec::UpdateNickHash(const char* New)
1069 {
1070         //user_hash::iterator newnick;
1071         user_hash::iterator oldnick = ServerInstance->clientlist.find(this->nick);
1072
1073         if (!strcasecmp(this->nick,New))
1074                 return oldnick->second;
1075
1076         if (oldnick == ServerInstance->clientlist.end())
1077                 return NULL; /* doesnt exist */
1078
1079         userrec* olduser = oldnick->second;
1080         ServerInstance->clientlist[New] = olduser;
1081         ServerInstance->clientlist.erase(oldnick);
1082         return ServerInstance->clientlist[New];
1083 }
1084
1085 bool userrec::ForceNickChange(const char* newnick)
1086 {
1087         char nick[MAXBUF];
1088         int MOD_RESULT = 0;
1089
1090         *nick = 0;
1091
1092         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1093
1094         if (MOD_RESULT)
1095         {
1096                 ServerInstance->stats->statsCollisions++;
1097                 return false;
1098         }
1099
1100         if (ServerInstance->XLines->matches_qline(newnick))
1101         {
1102                 ServerInstance->stats->statsCollisions++;
1103                 return false;
1104         }
1105
1106         if (newnick)
1107         {
1108                 strlcpy(this->nick, newnick, NICKMAX - 1);
1109         }
1110         if (this->registered == REG_ALL)
1111         {
1112                 const char* pars[1];
1113                 pars[0] = nick;
1114                 std::string cmd = "NICK";
1115                 ServerInstance->Parser->CallHandler(cmd, pars, 1, this);
1116         }
1117         return true;
1118 }
1119
1120 void userrec::SetSockAddr(int protocol_family, const char* ip, int port)
1121 {
1122         switch (protocol_family)
1123         {
1124 #ifdef SUPPORT_IP6LINKS
1125                 case AF_INET6:
1126                 {
1127                         ServerInstance->Log(DEBUG,"Set inet6 protocol address");
1128                         sockaddr_in6* sin = new sockaddr_in6;
1129                         sin->sin6_family = AF_INET6;
1130                         sin->sin6_port = port;
1131                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
1132                         this->ip = (sockaddr*)sin;
1133                 }
1134                 break;
1135 #endif
1136                 case AF_INET:
1137                 {
1138                         ServerInstance->Log(DEBUG,"Set inet4 protocol address");
1139                         sockaddr_in* sin = new sockaddr_in;
1140                         sin->sin_family = AF_INET;
1141                         sin->sin_port = port;
1142                         inet_pton(AF_INET, ip, &sin->sin_addr);
1143                         this->ip = (sockaddr*)sin;
1144                 }
1145                 break;
1146                 default:
1147                         ServerInstance->Log(DEBUG,"Ut oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1148                 break;
1149         }
1150 }
1151
1152 int userrec::GetPort()
1153 {
1154         if (this->ip == NULL)
1155                 return 0;
1156
1157         switch (this->GetProtocolFamily())
1158         {
1159 #ifdef SUPPORT_IP6LINKS
1160                 case AF_INET6:
1161                 {
1162                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1163                         return sin->sin6_port;
1164                 }
1165                 break;
1166 #endif
1167                 case AF_INET:
1168                 {
1169                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1170                         return sin->sin_port;
1171                 }
1172                 break;
1173                 default:
1174                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1175                 break;
1176         }
1177         return 0;
1178 }
1179
1180 int userrec::GetProtocolFamily()
1181 {
1182         if (this->ip == NULL)
1183                 return 0;
1184
1185         sockaddr_in* sin = (sockaddr_in*)this->ip;
1186         return sin->sin_family;
1187 }
1188
1189 const char* userrec::GetIPString()
1190 {
1191         static char buf[1024];
1192         static char temp[1024];
1193
1194         if (this->ip == NULL)
1195                 return "";
1196
1197         switch (this->GetProtocolFamily())
1198         {
1199 #ifdef SUPPORT_IP6LINKS
1200                 case AF_INET6:
1201                 {
1202                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1203                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1204                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1205                         if (*buf == ':')
1206                         {
1207                                 strlcpy(&temp[1], buf, sizeof(temp));
1208                                 *temp = '0';
1209                                 return temp;
1210                         }
1211                         return buf;
1212                 }
1213                 break;
1214 #endif
1215                 case AF_INET:
1216                 {
1217                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1218                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1219                         return buf;
1220                 }
1221                 break;
1222                 default:
1223                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1224                 break;
1225         }
1226         return "";
1227 }
1228
1229 const char* userrec::GetIPString(char* buf)
1230 {
1231         static char temp[1024];
1232
1233         if (this->ip == NULL)
1234         {
1235                 *buf = 0;
1236                 return buf;
1237         }
1238
1239         switch (this->GetProtocolFamily())
1240         {
1241 #ifdef SUPPORT_IP6LINKS
1242                 case AF_INET6:
1243                 {
1244                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1245                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1246                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1247                         if (*buf == ':')
1248                         {
1249                                 strlcpy(&temp[1], buf, sizeof(temp));
1250                                 *temp = '0';
1251                                 strlcpy(buf, temp, sizeof(temp));
1252                         }
1253                         return buf;
1254                 }
1255                 break;
1256 #endif
1257                 case AF_INET:
1258                 {
1259                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1260                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1261                         return buf;
1262                 }
1263                 break;
1264
1265                 default:
1266                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1267                 break;
1268         }
1269         return "";
1270 }
1271
1272
1273 void userrec::Write(std::string text)
1274 {
1275         if ((this->fd < 0) || (this->fd > MAX_DESCRIPTORS))
1276                 return;
1277
1278         text.append("\r\n");
1279
1280         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1281         {
1282                 try
1283                 {
1284                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length());
1285                 }
1286                 catch (ModuleException& modexcept)
1287                 {
1288                         ServerInstance->Log(DEBUG,"Module exception caught: %s",modexcept.GetReason());
1289                 }
1290         }
1291         else
1292         {
1293                 this->AddWriteBuf(text);
1294         }
1295         ServerInstance->stats->statsSent += text.length();
1296 }
1297
1298 /** Write()
1299  */
1300 void userrec::Write(const char *text, ...)
1301 {
1302         va_list argsPtr;
1303         char textbuffer[MAXBUF];
1304
1305         va_start(argsPtr, text);
1306         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1307         va_end(argsPtr);
1308
1309         this->Write(std::string(textbuffer));
1310 }
1311
1312 void userrec::WriteServ(const std::string& text)
1313 {
1314         char textbuffer[MAXBUF];
1315
1316         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1317         this->Write(std::string(textbuffer));
1318 }
1319
1320 /** WriteServ()
1321  *  Same as Write(), except `text' is prefixed with `:server.name '.
1322  */
1323 void userrec::WriteServ(const char* text, ...)
1324 {
1325         va_list argsPtr;
1326         char textbuffer[MAXBUF];
1327
1328         va_start(argsPtr, text);
1329         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1330         va_end(argsPtr);
1331
1332         this->WriteServ(std::string(textbuffer));
1333 }
1334
1335
1336 void userrec::WriteFrom(userrec *user, const std::string &text)
1337 {
1338         char tb[MAXBUF];
1339
1340         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1341
1342         this->Write(std::string(tb));
1343 }
1344
1345
1346 /* write text from an originating user to originating user */
1347
1348 void userrec::WriteFrom(userrec *user, const char* text, ...)
1349 {
1350         va_list argsPtr;
1351         char textbuffer[MAXBUF];
1352
1353         va_start(argsPtr, text);
1354         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1355         va_end(argsPtr);
1356
1357         this->WriteFrom(user, std::string(textbuffer));
1358 }
1359
1360
1361 /* write text to an destination user from a source user (e.g. user privmsg) */
1362
1363 void userrec::WriteTo(userrec *dest, const char *data, ...)
1364 {
1365         char textbuffer[MAXBUF];
1366         va_list argsPtr;
1367
1368         va_start(argsPtr, data);
1369         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1370         va_end(argsPtr);
1371
1372         this->WriteTo(dest, std::string(textbuffer));
1373 }
1374
1375 void userrec::WriteTo(userrec *dest, const std::string &data)
1376 {
1377         dest->WriteFrom(this, data);
1378 }
1379
1380
1381 void userrec::WriteCommon(const char* text, ...)
1382 {
1383         char textbuffer[MAXBUF];
1384         va_list argsPtr;
1385
1386         if (this->registered != REG_ALL)
1387                 return;
1388
1389         va_start(argsPtr, text);
1390         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1391         va_end(argsPtr);
1392
1393         this->WriteCommon(std::string(textbuffer));
1394 }
1395
1396 void userrec::WriteCommon(const std::string &text)
1397 {
1398         bool sent_to_at_least_one = false;
1399
1400         if (this->registered != REG_ALL)
1401                 return;
1402
1403         uniq_id++;
1404
1405         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1406         {
1407                 ucrec *n = *v;
1408                 if (n->channel)
1409                 {
1410                         CUList *ulist= n->channel->GetUsers();
1411
1412                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1413                         {
1414                                 if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1415                                 {
1416                                         already_sent[i->second->fd] = uniq_id;
1417                                         i->second->WriteFrom(this, std::string(text));
1418                                         sent_to_at_least_one = true;
1419                                 }
1420                         }
1421                 }
1422         }
1423
1424         /*
1425          * if the user was not in any channels, no users will receive the text. Make sure the user
1426          * receives their OWN message for WriteCommon
1427          */
1428         if (!sent_to_at_least_one)
1429         {
1430                 this->WriteFrom(this,std::string(text));
1431         }
1432 }
1433
1434
1435 /* write a formatted string to all users who share at least one common
1436  * channel, NOT including the source user e.g. for use in QUIT
1437  */
1438
1439 void userrec::WriteCommonExcept(const char* text, ...)
1440 {
1441         char textbuffer[MAXBUF];
1442         va_list argsPtr;
1443
1444         va_start(argsPtr, text);
1445         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1446         va_end(argsPtr);
1447
1448         this->WriteCommonExcept(std::string(textbuffer));
1449 }
1450
1451 void userrec::WriteCommonExcept(const std::string &text)
1452 {
1453         bool quit_munge = true;
1454         char oper_quit[MAXBUF];
1455         char textbuffer[MAXBUF];
1456
1457         strlcpy(textbuffer, text.c_str(), MAXBUF);
1458
1459         if (this->registered != REG_ALL)
1460                 return;
1461
1462         uniq_id++;
1463
1464         /* TODO: We need some form of WriteCommonExcept that will send two lines, one line to
1465          * opers and the other line to non-opers, then all this hidebans and hidesplits gunk
1466          * can go byebye.
1467          */
1468         if (ServerInstance->Config->HideSplits)
1469         {
1470                 char* check = textbuffer + 6;
1471
1472                 if (!strncasecmp(textbuffer, "QUIT :",6))
1473                 {
1474                         std::stringstream split(check);
1475                         std::string server_one;
1476                         std::string server_two;
1477
1478                         split >> server_one;
1479                         split >> server_two;
1480
1481                         if ((ServerInstance->FindServerName(server_one)) && (ServerInstance->FindServerName(server_two)))
1482                         {
1483                                 strlcpy(oper_quit,textbuffer,MAXQUIT);
1484                                 strlcpy(check,"*.net *.split",MAXQUIT);
1485                                 quit_munge = true;
1486                         }
1487                 }
1488         }
1489
1490         if ((ServerInstance->Config->HideBans) && (!quit_munge))
1491         {
1492                 if ((!strncasecmp(textbuffer, "QUIT :G-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :K-Lined:",14))
1493                 || (!strncasecmp(textbuffer, "QUIT :Q-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :Z-Lined:",14)))
1494                 {
1495                         char* check = textbuffer + 13;
1496                         strlcpy(oper_quit,textbuffer,MAXQUIT);
1497                         *check = 0;  // We don't need to strlcpy, we just chop it from the :
1498                         quit_munge = true;
1499                 }
1500         }
1501
1502         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1503         {
1504                 ucrec* n = *v;
1505                 if (n->channel)
1506                 {
1507                         CUList *ulist= n->channel->GetUsers();
1508
1509                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1510                         {
1511                                 if (this != i->second)
1512                                 {
1513                                         if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1514                                         {
1515                                                 already_sent[i->second->fd] = uniq_id;
1516                                                 if (quit_munge)
1517                                                         i->second->WriteFrom(this, *i->second->oper ? std::string(oper_quit) : std::string(textbuffer));
1518                                                 else
1519                                                         i->second->WriteFrom(this, std::string(textbuffer));
1520                                         }
1521                                 }
1522                         }
1523                 }
1524         }
1525
1526 }
1527
1528 void userrec::WriteWallOps(const std::string &text)
1529 {
1530         /* Does nothing if theyre not opered */
1531         if ((!*this->oper) && (IS_LOCAL(this)))
1532                 return;
1533
1534         std::string wallop = "WALLOPS :";
1535         wallop.append(text);
1536
1537         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1538         {
1539                 userrec* t = *i;
1540                 if ((IS_LOCAL(t)) && (t->modes[UM_WALLOPS]))
1541                         this->WriteTo(t,wallop);
1542         }
1543 }
1544
1545 void userrec::WriteWallOps(const char* text, ...)
1546 {
1547         char textbuffer[MAXBUF];
1548         va_list argsPtr;
1549
1550         va_start(argsPtr, text);
1551         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1552         va_end(argsPtr);
1553
1554         this->WriteWallOps(std::string(textbuffer));
1555 }
1556
1557 /* return 0 or 1 depending if users u and u2 share one or more common channels
1558  * (used by QUIT, NICK etc which arent channel specific notices)
1559  *
1560  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1561  * the first users channels then the second users channels within the outer loop,
1562  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1563  * all possible iterations). However this new function instead checks against the
1564  * channel's userlist in the inner loop which is a std::map<userrec*,userrec*>
1565  * and saves us time as we already know what pointer value we are after.
1566  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1567  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1568  */
1569 bool userrec::SharesChannelWith(userrec *other)
1570 {
1571         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1572                 return false;
1573
1574         /* Outer loop */
1575         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1576         {
1577                 /* Fetch the channel from the user */
1578                 ucrec* user_channel = *i;
1579
1580                 if (user_channel->channel)
1581                 {
1582                         /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1583                          * by replacing it with a map::find which *should* be more efficient
1584                          */
1585                         if (user_channel->channel->HasUser(other))
1586                                 return true;
1587                 }
1588         }
1589         return false;
1590 }
1591
1592 int userrec::CountChannels()
1593 {
1594         int z = 0;
1595         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1596                 if ((*i)->channel)
1597                         z++;
1598         return z;
1599 }
1600
1601 bool userrec::ChangeName(const char* gecos)
1602 {
1603         if (IS_LOCAL(this))
1604         {
1605                 int MOD_RESULT = 0;
1606                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1607                 if (MOD_RESULT)
1608                         return false;
1609                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1610         }
1611         strlcpy(this->fullname,gecos,MAXGECOS+1);
1612         return true;
1613 }
1614
1615 bool userrec::ChangeDisplayedHost(const char* host)
1616 {
1617         if (IS_LOCAL(this))
1618         {
1619                 int MOD_RESULT = 0;
1620                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1621                 if (MOD_RESULT)
1622                         return false;
1623                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1624         }
1625         strlcpy(this->dhost,host,63);
1626
1627         if (IS_LOCAL(this))
1628                 this->WriteServ("396 %s %s :is now your hidden host",this->nick,this->dhost);
1629
1630         return true;
1631 }
1632
1633 void userrec::NoticeAll(char* text, ...)
1634 {
1635         char textbuffer[MAXBUF];
1636         char formatbuffer[MAXBUF];
1637         va_list argsPtr;
1638
1639         va_start(argsPtr, text);
1640         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1641         va_end(argsPtr);
1642
1643         snprintf(formatbuffer,MAXBUF,"NOTICE $* :%s",textbuffer);
1644
1645         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1646         {
1647                 userrec* t = *i;
1648                 t->WriteFrom(this, std::string(formatbuffer));
1649         }
1650 }
1651
1652
1653 std::string userrec::ChannelList(userrec* source)
1654 {
1655         std::string list;
1656         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1657         {
1658                 ucrec* rec = *i;
1659
1660                 if(rec->channel && rec->channel->name)
1661                 {
1662                         /* If the target is the same as the sender, let them see all their channels.
1663                          * If the channel is NOT private/secret OR the user shares a common channel
1664                          * If the user is an oper, and the <options:operspywhois> option is set.
1665                          */
1666                         if ((source == this) || (*source->oper && ServerInstance->Config->OperSpyWhois) || (((!rec->channel->modes[CM_PRIVATE]) && (!rec->channel->modes[CM_SECRET])) || (rec->channel->HasUser(source))))
1667                         {
1668                                 list.append(rec->channel->GetStatusChar(this)).append(rec->channel->name).append(" ");
1669                         }
1670                 }
1671         }
1672         return list;
1673 }
1674
1675 void userrec::SplitChanList(userrec* dest, const std::string &cl)
1676 {
1677         std::string line;
1678         std::ostringstream prefix;
1679         std::string::size_type start, pos, length;
1680
1681         prefix << ":" << ServerInstance->Config->ServerName << " 319 " << this->nick << " " << dest->nick << " :";
1682         line = prefix.str();
1683
1684         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1685         {
1686                 length = (pos == std::string::npos) ? cl.length() : pos;
1687
1688                 if (line.length() + length - start > 510)
1689                 {
1690                         this->Write(line);
1691                         line = prefix.str();
1692                 }
1693
1694                 if(pos == std::string::npos)
1695                 {
1696                         line.append(cl.substr(start, length - start));
1697                         break;
1698                 }
1699                 else
1700                 {
1701                         line.append(cl.substr(start, length - start + 1));
1702                 }
1703         }
1704
1705         if (line.length())
1706         {
1707                 this->Write(line);
1708         }
1709 }
1710
1711
1712 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1713  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1714  * then their ip will be taken as 'priority' anyway, so for example,
1715  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1716  */
1717 ConnectClass& userrec::GetClass()
1718 {
1719         for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1720         {
1721                 if ((match(this->GetIPString(),i->host.c_str(),true)) || (match(this->host,i->host.c_str())))
1722                         return *i;
1723         }
1724
1725         return *(ServerInstance->Config->Classes.begin());
1726 }
1727
1728 void userrec::PurgeEmptyChannels()
1729 {
1730         std::vector<chanrec*> to_delete;
1731
1732         // firstly decrement the count on each channel
1733         for (std::vector<ucrec*>::iterator f = this->chans.begin(); f != this->chans.end(); f++)
1734         {
1735                 ucrec* uc = *f;
1736                 if (uc->channel)
1737                 {
1738                         if (uc->channel->DelUser(this) == 0)
1739                         {
1740                                 /* No users left in here, mark it for deletion */
1741                                 to_delete.push_back(uc->channel);
1742                                 uc->channel = NULL;
1743                         }
1744                 }
1745         }
1746
1747         for (std::vector<chanrec*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1748         {
1749                 chanrec* thischan = *n;
1750                 chan_hash::iterator i2 = ServerInstance->chanlist.find(thischan->name);
1751                 if (i2 != ServerInstance->chanlist.end())
1752                 {
1753                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1754                         DELETE(i2->second);
1755                         ServerInstance->chanlist.erase(i2);
1756                 }
1757         }
1758
1759         this->UnOper();
1760 }
1761
1762 void userrec::ShowMOTD()
1763 {
1764         if (!ServerInstance->Config->MOTD.size())
1765         {
1766                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
1767                 return;
1768         }
1769         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1770
1771         for (unsigned int i = 0; i < ServerInstance->Config->MOTD.size(); i++)
1772                 this->WriteServ("372 %s :- %s",this->nick,ServerInstance->Config->MOTD[i].c_str());
1773
1774         this->WriteServ("376 %s :End of message of the day.", this->nick);
1775 }
1776
1777 void userrec::ShowRULES()
1778 {
1779         if (!ServerInstance->Config->RULES.size())
1780         {
1781                 this->WriteServ("NOTICE %s :Rules file is missing.",this->nick);
1782                 return;
1783         }
1784         this->WriteServ("NOTICE %s :%s rules",this->nick,ServerInstance->Config->ServerName);
1785
1786         for (unsigned int i = 0; i < ServerInstance->Config->RULES.size(); i++)
1787                 this->WriteServ("NOTICE %s :%s",this->nick,ServerInstance->Config->RULES[i].c_str());
1788
1789         this->WriteServ("NOTICE %s :End of %s rules.",this->nick,ServerInstance->Config->ServerName);
1790 }
1791