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 /** NOTE: We cannot pass a const reference to this method.
 481  * The string is changed by the workings of the method,
 482  * so that if we pass const ref, we end up copying it to
 483  * something we can change anyway. Makes sense to just let
 484  * the compiler do that copy for us.
 485  */
 486 bool userrec::AddBuffer(std::string a)
 487 {
 488         std::string::size_type i = a.rfind('\r');
 489
 490         while (i != std::string::npos)
 491         {
 492                 a.erase(i, 1);
 493                 i = a.rfind('\r');
 494         }
 495
 496         if (a.length())
 497                 recvq.append(a);
 498
 499         if (recvq.length() > (unsigned)this->recvqmax)
 500         {
 501                 this->SetWriteError("RecvQ exceeded");
 502                 ServerInstance->WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 503                 return false;
 504         }
 505
 506         return true;
 507 }
 508
 509 bool userrec::BufferIsReady()
 510 {
 511         return (recvq.find('\n') != std::string::npos);
 512 }
 513
 514 void userrec::ClearBuffer()
 515 {
 516         recvq = "";
 517 }
 518
 519 std::string userrec::GetBuffer()
 520 {
 521         if (!recvq.length())
 522                 return "";
 523
 524         /* Strip any leading \r or \n off the string.
 525          * Usually there are only one or two of these,
 526          * so its is computationally cheap to do.
 527          */
 528         while ((*recvq.begin() == '\r') || (*recvq.begin() == '\n'))
 529                 recvq.erase(recvq.begin());
 530
 531         for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 532         {
 533                 /* Find the first complete line, return it as the
 534                  * result, and leave the recvq as whats left
 535                  */
 536                 if (*x == '\n')
 537                 {
 538                         std::string ret = std::string(recvq.begin(), x);
 539                         recvq.erase(recvq.begin(), x + 1);
 540                         return ret;
 541                 }
 542         }
 543         return "";
 544 }
 545
 546 void userrec::AddWriteBuf(const std::string &data)
 547 {
 548         if (*this->GetWriteError())
 549                 return;
 550
 551         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 552         {
 553                 /*
 554                  * Fix by brain - Set the error text BEFORE calling writeopers, because
 555                  * if we dont it'll recursively  call here over and over again trying
 556                  * to repeatedly add the text to the sendq!
 557                  */
 558                 this->SetWriteError("SendQ exceeded");
 559                 ServerInstance->WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 560                 return;
 561         }
 562
 563         if (data.length() > 512)
 564         {
 565                 std::string newdata(data);
 566                 newdata.resize(510);
 567                 newdata.append("\r\n");
 568                 sendq.append(newdata);
 569         }
 570         else
 571         {
 572                 sendq.append(data);
 573         }
 574 }
 575
 576 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 577 void userrec::FlushWriteBuf()
 578 {
 579         if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 580         {
 581                 const char* tb = this->sendq.c_str();
 582                 int n_sent = write(this->fd,tb,this->sendq.length());
 583                 if (n_sent == -1)
 584                 {
 585                         if (errno != EAGAIN)
 586                                 this->SetWriteError(strerror(errno));
 587                 }
 588                 else
 589                 {
 590                         // advance the queue
 591                         tb += n_sent;
 592                         this->sendq = tb;
 593                         // update the user's stats counters
 594                         this->bytes_out += n_sent;
 595                         this->cmds_out++;
 596                 }
 597         }
 598 }
 599
 600 void userrec::SetWriteError(const std::string &error)
 601 {
 602         ServerInstance->Log(DEBUG,"SetWriteError: %s",error.c_str());
 603         // don't try to set the error twice, its already set take the first string.
 604         if (!this->WriteError.length())
 605         {
 606                 ServerInstance->Log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 607                 this->WriteError = error;
 608         }
 609 }
 610
 611 const char* userrec::GetWriteError()
 612 {
 613         return this->WriteError.c_str();
 614 }
 615
 616 void userrec::Oper(const std::string &opertype)
 617 {
 618         this->modes[UM_OPERATOR] = 1;
 619         this->WriteServ("MODE %s :+o", this->nick);
 620         FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 621         ServerInstance->Log(DEFAULT,"OPER: %s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 622         strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 623         ServerInstance->all_opers.push_back(this);
 624         FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype));
 625 }
 626
 627 void userrec::UnOper()
 628 {
 629         if (*this->oper)
 630         {
 631                 *this->oper = 0;
 632                 this->modes[UM_OPERATOR] = 0;
 633                 for (std::vector<userrec*>::iterator a = ServerInstance->all_opers.begin(); a < ServerInstance->all_opers.end(); a++)
 634                 {
 635                         if (*a == this)
 636                         {
 637                                 ServerInstance->Log(DEBUG,"Oper removed from optimization list");
 638                                 ServerInstance->all_opers.erase(a);
 639                                 return;
 640                         }
 641                 }
 642         }
 643 }
 644
 645 void userrec::QuitUser(InspIRCd* Instance, userrec *user,const std::string &quitreason)
 646 {
 647         user_hash::iterator iter = Instance->clientlist.find(user->nick);
 648
 649 /*
 650  * I'm pretty sure returning here is causing a desync when part of the net thinks a user is gone,
 651  * and another part doesn't. We want to broadcast the quit/kill before bailing so the net stays in sync.
 652  *
 653  * I can't imagine this blowing up, so I'm commenting it out. We still check
 654  * before playing with a bad iterator below in our if(). DISCUSS THIS BEFORE YOU DO ANYTHING. --w00t
 655  *
 656  *      if (iter == clientlist.end())
 657  *              return;
 658  */
 659         std::string reason = quitreason;
 660
 661         if (reason.length() > MAXQUIT - 1)
 662                 reason.resize(MAXQUIT - 1);
 663
 664         if (IS_LOCAL(user))
 665                 user->Write("ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason.c_str());
 666
 667         if (user->registered == REG_ALL)
 668         {
 669                 user->PurgeEmptyChannels();
 670                 FOREACH_MOD_I(Instance,I_OnUserQuit,OnUserQuit(user,reason));
 671                 user->WriteCommonExcept("QUIT :%s",reason.c_str());
 672         }
 673
 674         if (IS_LOCAL(user))
 675                 user->FlushWriteBuf();
 676
 677         FOREACH_MOD_I(Instance,I_OnUserDisconnect,OnUserDisconnect(user));
 678
 679         if (IS_LOCAL(user))
 680         {
 681                 if (Instance->Config->GetIOHook(user->GetPort()))
 682                 {
 683                         try
 684                         {
 685                                 Instance->Config->GetIOHook(user->GetPort())->OnRawSocketClose(user->fd);
 686                         }
 687                         catch (ModuleException& modexcept)
 688                         {
 689                                 Instance->Log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
 690                         }
 691                 }
 692
 693                 Instance->SE->DelFd(user->fd);
 694                 user->CloseSocket();
 695         }
 696
 697         /*
 698          * this must come before the ServerInstance->WriteOpers so that it doesnt try to fill their buffer with anything
 699          * if they were an oper with +s.
 700          *
 701          * XXX -
 702          * In the current implementation, we only show local quits, as we only show local connects. With
 703          * the proposed implmentation of snomasks however, this will likely change in the (near?) future.
 704          */
 705         if (user->registered == REG_ALL)
 706         {
 707                 if (IS_LOCAL(user))
 708                         Instance->WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason.c_str());
 709                 user->AddToWhoWas();
 710         }
 711
 712         if (iter != Instance->clientlist.end())
 713         {
 714                 Instance->Log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
 715                 if (IS_LOCAL(user))
 716                 {
 717                         Instance->fd_ref_table[user->fd] = NULL;
 718                         if (find(Instance->local_users.begin(),Instance->local_users.end(),user) != Instance->local_users.end())
 719                                 Instance->local_users.erase(find(Instance->local_users.begin(),Instance->local_users.end(),user));
 720                 }
 721                 Instance->clientlist.erase(iter);
 722                 DELETE(user);
 723         }
 724 }
 725
 726 namespace irc
 727 {
 728         namespace whowas
 729         {
 730
 731                 WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
 732                 {
 733                         this->host = strdup(user->host);
 734                         this->dhost = strdup(user->dhost);
 735                         this->ident = strdup(user->ident);
 736                         this->server = user->server;
 737                         this->gecos = strdup(user->fullname);
 738                 }
 739
 740                 WhoWasGroup::~WhoWasGroup()
 741                 {
 742                         if (host)
 743                                 free(host);
 744                         if (dhost)
 745                                 free(dhost);
 746                         if (ident)
 747                                 free(ident);
 748                         if (gecos)
 749                                 free(gecos);
 750                 }
 751
 752                 /* every hour, run this function which removes all entries over 3 days */
 753                 void MaintainWhoWas(time_t t)
 754                 {
 755                         for (whowas_users::iterator iter = ::whowas.begin(); iter != ::whowas.end(); iter++)
 756                         {
 757                                 whowas_set* n = (whowas_set*)iter->second;
 758                                 if (n->size())
 759                                 {
 760                                         while ((n->begin() != n->end()) && ((*n->begin())->signon < t - 259200)) // 3 days
 761                                         {
 762                                                 WhoWasGroup *a = *(n->begin());
 763                                                 DELETE(a);
 764                                                 n->erase(n->begin());
 765                                         }
 766                                 }
 767                         }
 768                 }
 769         };
 770 };
 771
 772 /* adds or updates an entry in the whowas list */
 773 void userrec::AddToWhoWas()
 774 {
 775         irc::whowas::whowas_users::iterator iter = whowas.find(this->nick);
 776
 777         if (iter == whowas.end())
 778         {
 779                 irc::whowas::whowas_set* n = new irc::whowas::whowas_set;
 780                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 781                 n->push_back(a);
 782                 whowas[this->nick] = n;
 783         }
 784         else
 785         {
 786                 irc::whowas::whowas_set* group = (irc::whowas::whowas_set*)iter->second;
 787
 788                 if (group->size() > 10)
 789                 {
 790                         irc::whowas::WhoWasGroup *a = (irc::whowas::WhoWasGroup*)*(group->begin());
 791                         DELETE(a);
 792                         group->pop_front();
 793                 }
 794
 795                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 796                 group->push_back(a);
 797         }
 798 }
 799
 800 /* add a client connection to the sockets list */
 801 void userrec::AddClient(InspIRCd* Instance, int socket, int port, bool iscached, insp_inaddr ip)
 802 {
 803         std::string tempnick = ConvToStr(socket) + "-unknown";
 804         user_hash::iterator iter = Instance->clientlist.find(tempnick);
 805         const char *ipaddr = insp_ntoa(ip);
 806         userrec* _new;
 807         int j = 0;
 808
 809         /*
 810          * fix by brain.
 811          * as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 812          * using one as a registered connection. As they are per fd, we can also safely assume
 813          * that we wont have collisions. Therefore, if the nick exists in the list, its only
 814          * used by a dead socket, erase the iterator so that the new client may reclaim it.
 815          * this was probably the cause of 'server ignores me when i hammer it with reconnects'
 816          * issue in earlier alphas/betas
 817          */
 818         if (iter != Instance->clientlist.end())
 819         {
 820                 userrec* goner = iter->second;
 821                 DELETE(goner);
 822                 Instance->clientlist.erase(iter);
 823         }
 824
 825         Instance->Log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
 826
 827         _new = new userrec(Instance);
 828         Instance->clientlist[tempnick] = _new;
 829         _new->fd = socket;
 830         strlcpy(_new->nick,tempnick.c_str(),NICKMAX-1);
 831
 832         _new->server = Instance->FindServerNamePtr(Instance->Config->ServerName);
 833         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
 834         strcpy(_new->ident, "unknown");
 835
 836         _new->registered = REG_NONE;
 837         _new->signon = Instance->Time() + Instance->Config->dns_timeout;
 838         _new->lastping = 1;
 839
 840         Instance->Log(DEBUG,"Setting socket addresses");
 841         _new->SetSockAddr(AF_FAMILY, ipaddr, port);
 842         Instance->Log(DEBUG,"Socket addresses set.");
 843
 844         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
 845         for (const char* temp = _new->GetIPString(); *temp && j < 64; temp++, j++)
 846                 _new->dhost[j] = _new->host[j] = *temp;
 847         _new->dhost[j] = _new->host[j] = 0;
 848
 849         // set the registration timeout for this user
 850         unsigned long class_regtimeout = 90;
 851         int class_flood = 0;
 852         long class_threshold = 5;
 853         long class_sqmax = 262144;      // 256kb
 854         long class_rqmax = 4096;        // 4k
 855
 856         for (ClassVector::iterator i = Instance->Config->Classes.begin(); i != Instance->Config->Classes.end(); i++)
 857         {
 858                 if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str(),true)))
 859                 {
 860                         class_regtimeout = (unsigned long)i->registration_timeout;
 861                         class_flood = i->flood;
 862                         _new->pingmax = i->pingtime;
 863                         class_threshold = i->threshold;
 864                         class_sqmax = i->sendqmax;
 865                         class_rqmax = i->recvqmax;
 866                         break;
 867                 }
 868         }
 869
 870         _new->nping = Instance->Time() + _new->pingmax + Instance->Config->dns_timeout;
 871         _new->timeout = Instance->Time() + class_regtimeout;
 872         _new->flood = class_flood;
 873         _new->threshold = class_threshold;
 874         _new->sendqmax = class_sqmax;
 875         _new->recvqmax = class_rqmax;
 876
 877         Instance->fd_ref_table[socket] = _new;
 878         Instance->local_users.push_back(_new);
 879
 880         if (Instance->local_users.size() > Instance->Config->SoftLimit)
 881         {
 882                 userrec::QuitUser(Instance, _new,"No more connections allowed");
 883                 return;
 884         }
 885
 886         if (Instance->local_users.size() >= MAXCLIENTS)
 887         {
 888                 userrec::QuitUser(Instance, _new,"No more connections allowed");
 889                 return;
 890         }
 891
 892         /*
 893          * XXX -
 894          * this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 895          * its a pretty big but for the moment valid assumption:
 896          * file descriptors are handed out starting at 0, and are recycled as theyre freed.
 897          * therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 898          * irc server at once (or the irc server otherwise initiating this many connections, files etc)
 899          * which for the time being is a physical impossibility (even the largest networks dont have more
 900          * than about 10,000 users on ONE server!)
 901          */
 902         if ((unsigned)socket >= MAX_DESCRIPTORS)
 903         {
 904                 userrec::QuitUser(Instance, _new,"Server is full");
 905                 return;
 906         }
 907         char* e = Instance->XLines->matches_exception(ipaddr);
 908         if (!e)
 909         {
 910                 char* r = Instance->XLines->matches_zline(ipaddr);
 911                 if (r)
 912                 {
 913                         char reason[MAXBUF];
 914                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
 915                         userrec::QuitUser(Instance, _new,reason);
 916                         return;
 917                 }
 918         }
 919
 920         if (socket > -1)
 921         {
 922                 if (!Instance->SE->AddFd(socket,true,X_ESTAB_CLIENT))
 923                 {
 924                         userrec::QuitUser(Instance, _new, "Internal error handling connection");
 925                         return;
 926                 }
 927         }
 928
 929         _new->WriteServ("NOTICE Auth :*** Looking up your hostname...");
 930 }
 931
 932 long userrec::GlobalCloneCount()
 933 {
 934         char u1[1024];
 935         char u2[1024];
 936         long x = 0;
 937         for (user_hash::const_iterator a = ServerInstance->clientlist.begin(); a != ServerInstance->clientlist.end(); a++)
 938         {
 939                 /* We have to match ip's as strings - we don't know what protocol
 940                  * a remote user may be using
 941                  */
 942                 if (!strcasecmp(a->second->GetIPString(u1), this->GetIPString(u2)))
 943                                 x++;
 944         }
 945         return x;
 946 }
 947
 948 long userrec::LocalCloneCount()
 949 {
 950         long x = 0;
 951         for (std::vector<userrec*>::const_iterator a = ServerInstance->local_users.begin(); a != ServerInstance->local_users.end(); a++)
 952         {
 953                 userrec* comp = *a;
 954 #ifdef IPV6
 955                 /* I dont think theres any faster way of matching two ipv6 addresses than memcmp */
 956                 in6_addr* s1 = &(((sockaddr_in6*)comp->ip)->sin6_addr);
 957                 in6_addr* s2 = &(((sockaddr_in6*)this->ip)->sin6_addr);
 958                 if (!memcmp(s1->s6_addr, s2->s6_addr, sizeof(in6_addr)))
 959                         x++;
 960 #else
 961                 in_addr* s1 = &((sockaddr_in*)comp->ip)->sin_addr;
 962                 in_addr* s2 = &((sockaddr_in*)this->ip)->sin_addr;
 963                 if (s1->s_addr == s2->s_addr)
 964                         x++;
 965 #endif
 966         }
 967         return x;
 968 }
 969
 970 void userrec::FullConnect(CullList* Goners)
 971 {
 972         ServerInstance->stats->statsConnects++;
 973         this->idle_lastmsg = ServerInstance->Time();
 974
 975         ConnectClass a = this->GetClass();
 976
 977         if (a.type == CC_DENY)
 978         {
 979                 Goners->AddItem(this,"Unauthorised connection");
 980                 return;
 981         }
 982
 983         if ((*(a.pass.c_str())) && (!this->haspassed))
 984         {
 985                 Goners->AddItem(this,"Invalid password");
 986                 return;
 987         }
 988
 989         if (this->LocalCloneCount() > a.maxlocal)
 990         {
 991                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (local)");
 992                 ServerInstance->WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a.maxlocal, this->GetIPString());
 993                 return;
 994         }
 995         else if (this->GlobalCloneCount() > a.maxglobal)
 996         {
 997                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (global)");
 998                 ServerInstance->WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a.maxglobal, this->GetIPString());
 999                 return;
1000         }
1001
1002         char match_against[MAXBUF];
1003         snprintf(match_against,MAXBUF,"%s@%s", this->ident, this->host);
1004         char* e = ServerInstance->XLines->matches_exception(match_against);
1005
1006         if (!e)
1007         {
1008                 char* r = ServerInstance->XLines->matches_gline(match_against);
1009
1010                 if (r)
1011                 {
1012                         char reason[MAXBUF];
1013                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
1014                         Goners->AddItem(this, reason);
1015                         return;
1016                 }
1017
1018                 r = ServerInstance->XLines->matches_kline(match_against);
1019
1020                 if (r)
1021                 {
1022                         char reason[MAXBUF];
1023                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
1024                         Goners->AddItem(this, reason);
1025                         return;
1026                 }
1027         }
1028
1029
1030         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
1031         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
1032         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
1033         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
1034         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());
1035
1036         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
1037         // so i'd better split it :)
1038         std::stringstream out(ServerInstance->Config->data005);
1039         std::string token = "";
1040         std::string line5 = "";
1041         int token_counter = 0;
1042
1043         while (!out.eof())
1044         {
1045                 out >> token;
1046                 line5 = line5 + token + " ";
1047                 token_counter++;
1048
1049                 if ((token_counter >= 13) || (out.eof() == true))
1050                 {
1051                         this->WriteServ("005 %s %s:are supported by this server", this->nick, line5.c_str());
1052                         line5 = "";
1053                         token_counter = 0;
1054                 }
1055         }
1056
1057         this->ShowMOTD();
1058
1059         /*
1060          * fix 3 by brain, move registered = 7 below these so that spurious modes and host
1061          * changes dont go out onto the network and produce 'fake direction'.
1062          */
1063         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
1064         FOREACH_MOD(I_OnGlobalConnect,OnGlobalConnect(this));
1065         this->registered = REG_ALL;
1066         ServerInstance->WriteOpers("*** Client connecting on port %d: %s!%s@%s [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString());
1067 }
1068
1069 /** userrec::UpdateNick()
1070  * re-allocates a nick in the user_hash after they change nicknames,
1071  * returns a pointer to the new user as it may have moved
1072  */
1073 userrec* userrec::UpdateNickHash(const char* New)
1074 {
1075         //user_hash::iterator newnick;
1076         user_hash::iterator oldnick = ServerInstance->clientlist.find(this->nick);
1077
1078         if (!strcasecmp(this->nick,New))
1079                 return oldnick->second;
1080
1081         if (oldnick == ServerInstance->clientlist.end())
1082                 return NULL; /* doesnt exist */
1083
1084         userrec* olduser = oldnick->second;
1085         ServerInstance->clientlist[New] = olduser;
1086         ServerInstance->clientlist.erase(oldnick);
1087         return ServerInstance->clientlist[New];
1088 }
1089
1090 bool userrec::ForceNickChange(const char* newnick)
1091 {
1092         char nick[MAXBUF];
1093         int MOD_RESULT = 0;
1094
1095         *nick = 0;
1096
1097         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1098
1099         if (MOD_RESULT)
1100         {
1101                 ServerInstance->stats->statsCollisions++;
1102                 return false;
1103         }
1104
1105         if (ServerInstance->XLines->matches_qline(newnick))
1106         {
1107                 ServerInstance->stats->statsCollisions++;
1108                 return false;
1109         }
1110
1111         if (newnick)
1112         {
1113                 strlcpy(this->nick, newnick, NICKMAX - 1);
1114         }
1115         if (this->registered == REG_ALL)
1116         {
1117                 const char* pars[1];
1118                 pars[0] = nick;
1119                 std::string cmd = "NICK";
1120                 ServerInstance->Parser->CallHandler(cmd, pars, 1, this);
1121         }
1122         return true;
1123 }
1124
1125 void userrec::SetSockAddr(int protocol_family, const char* ip, int port)
1126 {
1127         switch (protocol_family)
1128         {
1129 #ifdef SUPPORT_IP6LINKS
1130                 case AF_INET6:
1131                 {
1132                         ServerInstance->Log(DEBUG,"Set inet6 protocol address");
1133                         sockaddr_in6* sin = new sockaddr_in6;
1134                         sin->sin6_family = AF_INET6;
1135                         sin->sin6_port = port;
1136                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
1137                         this->ip = (sockaddr*)sin;
1138                 }
1139                 break;
1140 #endif
1141                 case AF_INET:
1142                 {
1143                         ServerInstance->Log(DEBUG,"Set inet4 protocol address");
1144                         sockaddr_in* sin = new sockaddr_in;
1145                         sin->sin_family = AF_INET;
1146                         sin->sin_port = port;
1147                         inet_pton(AF_INET, ip, &sin->sin_addr);
1148                         this->ip = (sockaddr*)sin;
1149                 }
1150                 break;
1151                 default:
1152                         ServerInstance->Log(DEBUG,"Ut oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1153                 break;
1154         }
1155 }
1156
1157 int userrec::GetPort()
1158 {
1159         if (this->ip == NULL)
1160                 return 0;
1161
1162         switch (this->GetProtocolFamily())
1163         {
1164 #ifdef SUPPORT_IP6LINKS
1165                 case AF_INET6:
1166                 {
1167                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1168                         return sin->sin6_port;
1169                 }
1170                 break;
1171 #endif
1172                 case AF_INET:
1173                 {
1174                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1175                         return sin->sin_port;
1176                 }
1177                 break;
1178                 default:
1179                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1180                 break;
1181         }
1182         return 0;
1183 }
1184
1185 int userrec::GetProtocolFamily()
1186 {
1187         if (this->ip == NULL)
1188                 return 0;
1189
1190         sockaddr_in* sin = (sockaddr_in*)this->ip;
1191         return sin->sin_family;
1192 }
1193
1194 const char* userrec::GetIPString()
1195 {
1196         static char buf[1024];
1197         static char temp[1024];
1198
1199         if (this->ip == NULL)
1200                 return "";
1201
1202         switch (this->GetProtocolFamily())
1203         {
1204 #ifdef SUPPORT_IP6LINKS
1205                 case AF_INET6:
1206                 {
1207                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1208                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1209                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1210                         if (*buf == ':')
1211                         {
1212                                 strlcpy(&temp[1], buf, sizeof(temp));
1213                                 *temp = '0';
1214                                 return temp;
1215                         }
1216                         return buf;
1217                 }
1218                 break;
1219 #endif
1220                 case AF_INET:
1221                 {
1222                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1223                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1224                         return buf;
1225                 }
1226                 break;
1227                 default:
1228                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1229                 break;
1230         }
1231         return "";
1232 }
1233
1234 const char* userrec::GetIPString(char* buf)
1235 {
1236         static char temp[1024];
1237
1238         if (this->ip == NULL)
1239         {
1240                 *buf = 0;
1241                 return buf;
1242         }
1243
1244         switch (this->GetProtocolFamily())
1245         {
1246 #ifdef SUPPORT_IP6LINKS
1247                 case AF_INET6:
1248                 {
1249                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1250                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1251                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1252                         if (*buf == ':')
1253                         {
1254                                 strlcpy(&temp[1], buf, sizeof(temp));
1255                                 *temp = '0';
1256                                 strlcpy(buf, temp, sizeof(temp));
1257                         }
1258                         return buf;
1259                 }
1260                 break;
1261 #endif
1262                 case AF_INET:
1263                 {
1264                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1265                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1266                         return buf;
1267                 }
1268                 break;
1269
1270                 default:
1271                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1272                 break;
1273         }
1274         return "";
1275 }
1276
1277 /** NOTE: We cannot pass a const reference to this method.
1278  * The string is changed by the workings of the method,
1279  * so that if we pass const ref, we end up copying it to
1280  * something we can change anyway. Makes sense to just let
1281  * the compiler do that copy for us.
1282  */
1283 void userrec::Write(std::string text)
1284 {
1285         if ((this->fd < 0) || (this->fd > MAX_DESCRIPTORS))
1286                 return;
1287
1288         text.append("\r\n");
1289
1290         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1291         {
1292                 try
1293                 {
1294                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length());
1295                 }
1296                 catch (ModuleException& modexcept)
1297                 {
1298                         ServerInstance->Log(DEBUG,"Module exception caught: %s",modexcept.GetReason());
1299                 }
1300         }
1301         else
1302         {
1303                 this->AddWriteBuf(text);
1304         }
1305         ServerInstance->stats->statsSent += text.length();
1306 }
1307
1308 /** Write()
1309  */
1310 void userrec::Write(const char *text, ...)
1311 {
1312         va_list argsPtr;
1313         char textbuffer[MAXBUF];
1314
1315         va_start(argsPtr, text);
1316         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1317         va_end(argsPtr);
1318
1319         this->Write(std::string(textbuffer));
1320 }
1321
1322 void userrec::WriteServ(const std::string& text)
1323 {
1324         char textbuffer[MAXBUF];
1325
1326         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1327         this->Write(std::string(textbuffer));
1328 }
1329
1330 /** WriteServ()
1331  *  Same as Write(), except `text' is prefixed with `:server.name '.
1332  */
1333 void userrec::WriteServ(const char* text, ...)
1334 {
1335         va_list argsPtr;
1336         char textbuffer[MAXBUF];
1337
1338         va_start(argsPtr, text);
1339         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1340         va_end(argsPtr);
1341
1342         this->WriteServ(std::string(textbuffer));
1343 }
1344
1345
1346 void userrec::WriteFrom(userrec *user, const std::string &text)
1347 {
1348         char tb[MAXBUF];
1349
1350         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1351
1352         this->Write(std::string(tb));
1353 }
1354
1355
1356 /* write text from an originating user to originating user */
1357
1358 void userrec::WriteFrom(userrec *user, const char* text, ...)
1359 {
1360         va_list argsPtr;
1361         char textbuffer[MAXBUF];
1362
1363         va_start(argsPtr, text);
1364         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1365         va_end(argsPtr);
1366
1367         this->WriteFrom(user, std::string(textbuffer));
1368 }
1369
1370
1371 /* write text to an destination user from a source user (e.g. user privmsg) */
1372
1373 void userrec::WriteTo(userrec *dest, const char *data, ...)
1374 {
1375         char textbuffer[MAXBUF];
1376         va_list argsPtr;
1377
1378         va_start(argsPtr, data);
1379         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1380         va_end(argsPtr);
1381
1382         this->WriteTo(dest, std::string(textbuffer));
1383 }
1384
1385 void userrec::WriteTo(userrec *dest, const std::string &data)
1386 {
1387         dest->WriteFrom(this, data);
1388 }
1389
1390
1391 void userrec::WriteCommon(const char* text, ...)
1392 {
1393         char textbuffer[MAXBUF];
1394         va_list argsPtr;
1395
1396         if (this->registered != REG_ALL)
1397                 return;
1398
1399         va_start(argsPtr, text);
1400         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1401         va_end(argsPtr);
1402
1403         this->WriteCommon(std::string(textbuffer));
1404 }
1405
1406 void userrec::WriteCommon(const std::string &text)
1407 {
1408         bool sent_to_at_least_one = false;
1409
1410         if (this->registered != REG_ALL)
1411                 return;
1412
1413         uniq_id++;
1414
1415         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1416         {
1417                 ucrec *n = *v;
1418                 if (n->channel)
1419                 {
1420                         CUList *ulist= n->channel->GetUsers();
1421
1422                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1423                         {
1424                                 if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1425                                 {
1426                                         already_sent[i->second->fd] = uniq_id;
1427                                         i->second->WriteFrom(this, std::string(text));
1428                                         sent_to_at_least_one = true;
1429                                 }
1430                         }
1431                 }
1432         }
1433
1434         /*
1435          * if the user was not in any channels, no users will receive the text. Make sure the user
1436          * receives their OWN message for WriteCommon
1437          */
1438         if (!sent_to_at_least_one)
1439         {
1440                 this->WriteFrom(this,std::string(text));
1441         }
1442 }
1443
1444
1445 /* write a formatted string to all users who share at least one common
1446  * channel, NOT including the source user e.g. for use in QUIT
1447  */
1448
1449 void userrec::WriteCommonExcept(const char* text, ...)
1450 {
1451         char textbuffer[MAXBUF];
1452         va_list argsPtr;
1453
1454         va_start(argsPtr, text);
1455         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1456         va_end(argsPtr);
1457
1458         this->WriteCommonExcept(std::string(textbuffer));
1459 }
1460
1461 void userrec::WriteCommonExcept(const std::string &text)
1462 {
1463         bool quit_munge = true;
1464         char oper_quit[MAXBUF];
1465         char textbuffer[MAXBUF];
1466
1467         strlcpy(textbuffer, text.c_str(), MAXBUF);
1468
1469         if (this->registered != REG_ALL)
1470                 return;
1471
1472         uniq_id++;
1473
1474         /* TODO: We need some form of WriteCommonExcept that will send two lines, one line to
1475          * opers and the other line to non-opers, then all this hidebans and hidesplits gunk
1476          * can go byebye.
1477          */
1478         if (ServerInstance->Config->HideSplits)
1479         {
1480                 char* check = textbuffer + 6;
1481
1482                 if (!strncasecmp(textbuffer, "QUIT :",6))
1483                 {
1484                         std::stringstream split(check);
1485                         std::string server_one;
1486                         std::string server_two;
1487
1488                         split >> server_one;
1489                         split >> server_two;
1490
1491                         if ((ServerInstance->FindServerName(server_one)) && (ServerInstance->FindServerName(server_two)))
1492                         {
1493                                 strlcpy(oper_quit,textbuffer,MAXQUIT);
1494                                 strlcpy(check,"*.net *.split",MAXQUIT);
1495                                 quit_munge = true;
1496                         }
1497                 }
1498         }
1499
1500         if ((ServerInstance->Config->HideBans) && (!quit_munge))
1501         {
1502                 if ((!strncasecmp(textbuffer, "QUIT :G-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :K-Lined:",14))
1503                 || (!strncasecmp(textbuffer, "QUIT :Q-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :Z-Lined:",14)))
1504                 {
1505                         char* check = textbuffer + 13;
1506                         strlcpy(oper_quit,textbuffer,MAXQUIT);
1507                         *check = 0;  // We don't need to strlcpy, we just chop it from the :
1508                         quit_munge = true;
1509                 }
1510         }
1511
1512         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1513         {
1514                 ucrec* n = *v;
1515                 if (n->channel)
1516                 {
1517                         CUList *ulist= n->channel->GetUsers();
1518
1519                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1520                         {
1521                                 if (this != i->second)
1522                                 {
1523                                         if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1524                                         {
1525                                                 already_sent[i->second->fd] = uniq_id;
1526                                                 if (quit_munge)
1527                                                         i->second->WriteFrom(this, *i->second->oper ? std::string(oper_quit) : std::string(textbuffer));
1528                                                 else
1529                                                         i->second->WriteFrom(this, std::string(textbuffer));
1530                                         }
1531                                 }
1532                         }
1533                 }
1534         }
1535
1536 }
1537
1538 void userrec::WriteWallOps(const std::string &text)
1539 {
1540         /* Does nothing if theyre not opered */
1541         if ((!*this->oper) && (IS_LOCAL(this)))
1542                 return;
1543
1544         std::string wallop = "WALLOPS :";
1545         wallop.append(text);
1546
1547         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1548         {
1549                 userrec* t = *i;
1550                 if ((IS_LOCAL(t)) && (t->modes[UM_WALLOPS]))
1551                         this->WriteTo(t,wallop);
1552         }
1553 }
1554
1555 void userrec::WriteWallOps(const char* text, ...)
1556 {
1557         char textbuffer[MAXBUF];
1558         va_list argsPtr;
1559
1560         va_start(argsPtr, text);
1561         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1562         va_end(argsPtr);
1563
1564         this->WriteWallOps(std::string(textbuffer));
1565 }
1566
1567 /* return 0 or 1 depending if users u and u2 share one or more common channels
1568  * (used by QUIT, NICK etc which arent channel specific notices)
1569  *
1570  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1571  * the first users channels then the second users channels within the outer loop,
1572  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1573  * all possible iterations). However this new function instead checks against the
1574  * channel's userlist in the inner loop which is a std::map<userrec*,userrec*>
1575  * and saves us time as we already know what pointer value we are after.
1576  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1577  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1578  */
1579 bool userrec::SharesChannelWith(userrec *other)
1580 {
1581         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1582                 return false;
1583
1584         /* Outer loop */
1585         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1586         {
1587                 /* Fetch the channel from the user */
1588                 ucrec* user_channel = *i;
1589
1590                 if (user_channel->channel)
1591                 {
1592                         /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1593                          * by replacing it with a map::find which *should* be more efficient
1594                          */
1595                         if (user_channel->channel->HasUser(other))
1596                                 return true;
1597                 }
1598         }
1599         return false;
1600 }
1601
1602 int userrec::CountChannels()
1603 {
1604         int z = 0;
1605         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1606                 if ((*i)->channel)
1607                         z++;
1608         return z;
1609 }
1610
1611 bool userrec::ChangeName(const char* gecos)
1612 {
1613         if (IS_LOCAL(this))
1614         {
1615                 int MOD_RESULT = 0;
1616                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1617                 if (MOD_RESULT)
1618                         return false;
1619                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1620         }
1621         strlcpy(this->fullname,gecos,MAXGECOS+1);
1622         return true;
1623 }
1624
1625 bool userrec::ChangeDisplayedHost(const char* host)
1626 {
1627         if (IS_LOCAL(this))
1628         {
1629                 int MOD_RESULT = 0;
1630                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1631                 if (MOD_RESULT)
1632                         return false;
1633                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1634         }
1635         strlcpy(this->dhost,host,63);
1636
1637         if (IS_LOCAL(this))
1638                 this->WriteServ("396 %s %s :is now your hidden host",this->nick,this->dhost);
1639
1640         return true;
1641 }
1642
1643 void userrec::NoticeAll(char* text, ...)
1644 {
1645         char textbuffer[MAXBUF];
1646         char formatbuffer[MAXBUF];
1647         va_list argsPtr;
1648
1649         va_start(argsPtr, text);
1650         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1651         va_end(argsPtr);
1652
1653         snprintf(formatbuffer,MAXBUF,"NOTICE $* :%s",textbuffer);
1654
1655         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1656         {
1657                 userrec* t = *i;
1658                 t->WriteFrom(this, std::string(formatbuffer));
1659         }
1660 }
1661
1662
1663 std::string userrec::ChannelList(userrec* source)
1664 {
1665         std::string list;
1666         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1667         {
1668                 ucrec* rec = *i;
1669
1670                 if(rec->channel && rec->channel->name)
1671                 {
1672                         /* If the target is the same as the sender, let them see all their channels.
1673                          * If the channel is NOT private/secret OR the user shares a common channel
1674                          * If the user is an oper, and the <options:operspywhois> option is set.
1675                          */
1676                         if ((source == this) || (*source->oper && ServerInstance->Config->OperSpyWhois) || (((!rec->channel->modes[CM_PRIVATE]) && (!rec->channel->modes[CM_SECRET])) || (rec->channel->HasUser(source))))
1677                         {
1678                                 list.append(rec->channel->GetStatusChar(this)).append(rec->channel->name).append(" ");
1679                         }
1680                 }
1681         }
1682         return list;
1683 }
1684
1685 void userrec::SplitChanList(userrec* dest, const std::string &cl)
1686 {
1687         std::string line;
1688         std::ostringstream prefix;
1689         std::string::size_type start, pos, length;
1690
1691         prefix << ":" << ServerInstance->Config->ServerName << " 319 " << this->nick << " " << dest->nick << " :";
1692         line = prefix.str();
1693
1694         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1695         {
1696                 length = (pos == std::string::npos) ? cl.length() : pos;
1697
1698                 if (line.length() + length - start > 510)
1699                 {
1700                         this->Write(line);
1701                         line = prefix.str();
1702                 }
1703
1704                 if(pos == std::string::npos)
1705                 {
1706                         line.append(cl.substr(start, length - start));
1707                         break;
1708                 }
1709                 else
1710                 {
1711                         line.append(cl.substr(start, length - start + 1));
1712                 }
1713         }
1714
1715         if (line.length())
1716         {
1717                 this->Write(line);
1718         }
1719 }
1720
1721
1722 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1723  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1724  * then their ip will be taken as 'priority' anyway, so for example,
1725  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1726  */
1727 ConnectClass& userrec::GetClass()
1728 {
1729         for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1730         {
1731                 if ((match(this->GetIPString(),i->host.c_str(),true)) || (match(this->host,i->host.c_str())))
1732                         return *i;
1733         }
1734
1735         return *(ServerInstance->Config->Classes.begin());
1736 }
1737
1738 void userrec::PurgeEmptyChannels()
1739 {
1740         std::vector<chanrec*> to_delete;
1741
1742         // firstly decrement the count on each channel
1743         for (std::vector<ucrec*>::iterator f = this->chans.begin(); f != this->chans.end(); f++)
1744         {
1745                 ucrec* uc = *f;
1746                 if (uc->channel)
1747                 {
1748                         if (uc->channel->DelUser(this) == 0)
1749                         {
1750                                 /* No users left in here, mark it for deletion */
1751                                 to_delete.push_back(uc->channel);
1752                                 uc->channel = NULL;
1753                         }
1754                 }
1755         }
1756
1757         for (std::vector<chanrec*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1758         {
1759                 chanrec* thischan = *n;
1760                 chan_hash::iterator i2 = ServerInstance->chanlist.find(thischan->name);
1761                 if (i2 != ServerInstance->chanlist.end())
1762                 {
1763                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1764                         DELETE(i2->second);
1765                         ServerInstance->chanlist.erase(i2);
1766                 }
1767         }
1768
1769         this->UnOper();
1770 }
1771
1772 void userrec::ShowMOTD()
1773 {
1774         if (!ServerInstance->Config->MOTD.size())
1775         {
1776                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
1777                 return;
1778         }
1779         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1780
1781         for (unsigned int i = 0; i < ServerInstance->Config->MOTD.size(); i++)
1782                 this->WriteServ("372 %s :- %s",this->nick,ServerInstance->Config->MOTD[i].c_str());
1783
1784         this->WriteServ("376 %s :End of message of the day.", this->nick);
1785 }
1786
1787 void userrec::ShowRULES()
1788 {
1789         if (!ServerInstance->Config->RULES.size())
1790         {
1791                 this->WriteServ("NOTICE %s :Rules file is missing.",this->nick);
1792                 return;
1793         }
1794         this->WriteServ("NOTICE %s :%s rules",this->nick,ServerInstance->Config->ServerName);
1795
1796         for (unsigned int i = 0; i < ServerInstance->Config->RULES.size(); i++)
1797                 this->WriteServ("NOTICE %s :%s",this->nick,ServerInstance->Config->RULES[i].c_str());
1798
1799         this->WriteServ("NOTICE %s :End of %s rules.",this->nick,ServerInstance->Config->ServerName);
1800 }
1801