src/modules/m_spanningtree/treesocket2.cpp

   1 #include "configreader.h"
   2 #include "users.h"
   3 #include "channels.h"
   4 #include "modules.h"
   5 #include "commands/cmd_whois.h"
   6 #include "commands/cmd_stats.h"
   7 #include "socket.h"
   8 #include "inspircd.h"
   9 #include "wildcard.h"
  10 #include "xline.h"
  11 #include "transport.h"
  12 #include "socketengine.h"
  13
  14 #include "m_spanningtree/main.h"
  15 #include "m_spanningtree/utils.h"
  16 #include "m_spanningtree/treeserver.h"
  17 #include "m_spanningtree/link.h"
  18 #include "m_spanningtree/treesocket.h"
  19 #include "m_spanningtree/resolvers.h"
  20 #include "m_spanningtree/handshaketimer.h"
  21
  22 /* $ModDep: m_spanningtree/timesynctimer.h m_spanningtree/resolvers.h m_spanningtree/main.h m_spanningtree/utils.h m_spanningtree/treeserver.h m_spanningtree/link.h m_spanningtree/treesocket.h */
  23
  24 int TreeSocket::WriteLine(std::string line)
  25 {
  26         Instance->Log(DEBUG, "-> %s", line.c_str());
  27         line.append("\r\n");
  28         return this->Write(line);
  29 }
  30
  31 /* Handle ERROR command */
  32 bool TreeSocket::Error(std::deque<std::string> &params)
  33 {
  34         if (params.size() < 1)
  35                 return false;
  36         this->Instance->SNO->WriteToSnoMask('l',"ERROR from %s: %s",(InboundServerName != "" ? InboundServerName.c_str() : myhost.c_str()),params[0].c_str());
  37         /* we will return false to cause the socket to close. */
  38         return false;
  39 }
  40
  41 bool TreeSocket::Modules(const std::string &prefix, std::deque<std::string> &params)
  42 {
  43         if (params.empty())
  44                 return true;
  45
  46         if (!this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
  47         {
  48                 /* Pass it on, not for us */
  49                 Utils->DoOneToOne(prefix, "MODULES", params, params[0]);
  50                 return true;
  51         }
  52
  53         char strbuf[MAXBUF];
  54         std::deque<std::string> par;
  55         par.push_back(prefix);
  56         par.push_back("");
  57
  58         userrec* source = this->Instance->FindNick(prefix);
  59         if (!source)
  60                 return true;
  61
  62         for (unsigned int i = 0; i < Instance->Config->module_names.size(); i++)
  63         {
  64                 Version V = Instance->modules[i]->GetVersion();
  65                 char modulename[MAXBUF];
  66                 char flagstate[MAXBUF];
  67                 *flagstate = 0;
  68                 if (V.Flags & VF_STATIC)
  69                         strlcat(flagstate,", static",MAXBUF);
  70                 if (V.Flags & VF_VENDOR)
  71                         strlcat(flagstate,", vendor",MAXBUF);
  72                 if (V.Flags & VF_COMMON)
  73                         strlcat(flagstate,", common",MAXBUF);
  74                 if (V.Flags & VF_SERVICEPROVIDER)
  75                         strlcat(flagstate,", service provider",MAXBUF);
  76                 if (!flagstate[0])
  77                         strcpy(flagstate,"  <no flags>");
  78                 strlcpy(modulename,Instance->Config->module_names[i].c_str(),256);
  79                 if (*source->oper)
  80                 {
  81                         snprintf(strbuf, MAXBUF, "::%s 900 %s :0x%08lx %d.%d.%d.%d %s (%s)",Instance->Config->ServerName,source->nick,(long unsigned int)Instance->modules[i],V.Major,V.Minor,V.Revision,V.Build,ServerConfig::CleanFilename(modulename),flagstate+2);
  82                 }
  83                 else
  84                 {
  85                         snprintf(strbuf, MAXBUF, "::%s 900 %s :%s",Instance->Config->ServerName,source->nick,ServerConfig::CleanFilename(modulename));
  86                 }
  87                 par[1] = strbuf;
  88                 Utils->DoOneToOne(Instance->Config->ServerName, "PUSH", par, source->server);
  89         }
  90         snprintf(strbuf, MAXBUF, "::%s 901 %s :End of MODULES list", Instance->Config->ServerName, source->nick);
  91         par[1] = strbuf;
  92         Utils->DoOneToOne(Instance->Config->ServerName, "PUSH", par, source->server);
  93         return true;
  94 }
  95
  96 /** remote MOTD. leet, huh? */
  97 bool TreeSocket::Motd(const std::string &prefix, std::deque<std::string> &params)
  98 {
  99         if (params.size() > 0)
 100         {
 101                 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
 102                 {
 103                         /* It's for our server */
 104                         string_list results;
 105                         userrec* source = this->Instance->FindNick(prefix);
 106
 107                         if (source)
 108                         {
 109                                 std::deque<std::string> par;
 110                                 par.push_back(prefix);
 111                                 par.push_back("");
 112
 113                                 if (!Instance->Config->MOTD.size())
 114                                 {
 115                                         par[1] = std::string("::")+Instance->Config->ServerName+" 422 "+source->nick+" :Message of the day file is missing.";
 116                                         Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
 117                                         return true;
 118                                 }
 119
 120                                 par[1] = std::string("::")+Instance->Config->ServerName+" 375 "+source->nick+" :"+Instance->Config->ServerName+" message of the day";
 121                                 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
 122
 123                                 for (unsigned int i = 0; i < Instance->Config->MOTD.size(); i++)
 124                                 {
 125                                         par[1] = std::string("::")+Instance->Config->ServerName+" 372 "+source->nick+" :- "+Instance->Config->MOTD[i];
 126                                         Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
 127                                 }
 128
 129                                 par[1] = std::string("::")+Instance->Config->ServerName+" 376 "+source->nick+" End of message of the day.";
 130                                 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
 131                         }
 132                 }
 133                 else
 134                 {
 135                         /* Pass it on */
 136                         userrec* source = this->Instance->FindNick(prefix);
 137                         if (source)
 138                                 Utils->DoOneToOne(prefix, "MOTD", params, params[0]);
 139                 }
 140         }
 141         return true;
 142 }
 143
 144 /** remote ADMIN. leet, huh? */
 145 bool TreeSocket::Admin(const std::string &prefix, std::deque<std::string> &params)
 146 {
 147         if (params.size() > 0)
 148         {
 149                 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
 150                 {
 151                         /* It's for our server */
 152                         string_list results;
 153                         userrec* source = this->Instance->FindNick(prefix);
 154                         if (source)
 155                         {
 156                                 std::deque<std::string> par;
 157                                 par.push_back(prefix);
 158                                 par.push_back("");
 159                                 par[1] = std::string("::")+Instance->Config->ServerName+" 256 "+source->nick+" :Administrative info for "+Instance->Config->ServerName;
 160                                 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
 161                                 par[1] = std::string("::")+Instance->Config->ServerName+" 257 "+source->nick+" :Name     - "+Instance->Config->AdminName;
 162                                 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
 163                                 par[1] = std::string("::")+Instance->Config->ServerName+" 258 "+source->nick+" :Nickname - "+Instance->Config->AdminNick;
 164                                 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
 165                                 par[1] = std::string("::")+Instance->Config->ServerName+" 258 "+source->nick+" :E-Mail   - "+Instance->Config->AdminEmail;
 166                                 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
 167                         }
 168                 }
 169                 else
 170                 {
 171                         /* Pass it on */
 172                         userrec* source = this->Instance->FindNick(prefix);
 173                         if (source)
 174                                 Utils->DoOneToOne(prefix, "ADMIN", params, params[0]);
 175                 }
 176         }
 177         return true;
 178 }
 179
 180 bool TreeSocket::Stats(const std::string &prefix, std::deque<std::string> &params)
 181 {
 182         /* Get the reply to a STATS query if it matches this servername,
 183          * and send it back as a load of PUSH queries
 184          */
 185         if (params.size() > 1)
 186         {
 187                 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[1]))
 188                 {
 189                         /* It's for our server */
 190                         string_list results;
 191                         userrec* source = this->Instance->FindNick(prefix);
 192                         if (source)
 193                         {
 194                                 std::deque<std::string> par;
 195                                 par.push_back(prefix);
 196                                 par.push_back("");
 197                                 DoStats(this->Instance, *(params[0].c_str()), source, results);
 198                                 for (size_t i = 0; i < results.size(); i++)
 199                                 {
 200                                         par[1] = "::" + results[i];
 201                                         Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
 202                                 }
 203                         }
 204                 }
 205                 else
 206                 {
 207                         /* Pass it on */
 208                         userrec* source = this->Instance->FindNick(prefix);
 209                         if (source)
 210                                 Utils->DoOneToOne(prefix, "STATS", params, params[1]);
 211                 }
 212         }
 213         return true;
 214 }
 215
 216
 217 /** Because the core won't let users or even SERVERS set +o,
 218  * we use the OPERTYPE command to do this.
 219  */
 220 bool TreeSocket::OperType(const std::string &prefix, std::deque<std::string> &params)
 221 {
 222         if (params.size() != 1)
 223                 return true;
 224         std::string opertype = params[0];
 225         userrec* u = this->Instance->FindNick(prefix);
 226         if (u)
 227         {
 228                 u->modes[UM_OPERATOR] = 1;
 229                 this->Instance->all_opers.push_back(u);
 230                 strlcpy(u->oper,opertype.c_str(),NICKMAX-1);
 231                 Utils->DoOneToAllButSender(u->nick,"OPERTYPE",params,u->server);
 232                 this->Instance->SNO->WriteToSnoMask('o',"From %s: User %s (%s@%s) is now an IRC operator of type %s",u->server, u->nick,u->ident,u->host,irc::Spacify(opertype.c_str()));
 233         }
 234         return true;
 235 }
 236
 237 /** Because Andy insists that services-compatible servers must
 238  * implement SVSNICK and SVSJOIN, that's exactly what we do :p
 239  */
 240 bool TreeSocket::ForceNick(const std::string &prefix, std::deque<std::string> &params)
 241 {
 242         if (params.size() < 3)
 243                 return true;
 244
 245         userrec* u = this->Instance->FindNick(params[0]);
 246
 247         if (u)
 248         {
 249                 Utils->DoOneToAllButSender(prefix,"SVSNICK",params,prefix);
 250                 if (IS_LOCAL(u))
 251                 {
 252                         std::deque<std::string> par;
 253                         par.push_back(params[1]);
 254                         if (!u->ForceNickChange(params[1].c_str()))
 255                         {
 256                                 userrec::QuitUser(this->Instance, u, "Nickname collision");
 257                                 return true;
 258                         }
 259                         u->age = atoi(params[2].c_str());
 260                 }
 261         }
 262         return true;
 263 }
 264
 265 bool TreeSocket::OperQuit(const std::string &prefix, std::deque<std::string> &params)
 266 {
 267         if (params.size() < 1)
 268                 return true;
 269
 270         userrec* u = this->Instance->FindNick(prefix);
 271
 272         if (u)
 273         {
 274                 Utils->DoOneToAllButSender(prefix,"OPERQUIT",params,prefix);
 275                 u->SetOperQuit(params[0]);
 276         }
 277         return true;
 278 }
 279
 280 /*
 281  * Remote SQUIT (RSQUIT). Routing works similar to SVSNICK: Route it to the server that the target is connected to locally,
 282  * then let that server do the dirty work (squit it!). Example:
 283  * A -> B -> C -> D: oper on A squits D, A routes to B, B routes to C, C notices D connected locally, kills it. -- w00t
 284  */
 285 bool TreeSocket::RemoteSquit(const std::string &prefix, std::deque<std::string> &params)
 286 {
 287         /* ok.. :w00t RSQUIT jupe.barafranca.com :reason here */
 288         if (params.size() < 2)
 289                 return true;
 290
 291         TreeServer* s = Utils->FindServerMask(params[0]);
 292
 293         if (s)
 294         {
 295                 if (s == Utils->TreeRoot)
 296                 {
 297                         this->Instance->SNO->WriteToSnoMask('l',"What the fuck, I recieved a remote SQUIT for myself? :< (from %s", prefix.c_str());
 298                         return true;
 299                 }
 300
 301                 TreeSocket* sock = s->GetSocket();
 302
 303                 if (sock)
 304                 {
 305                         /* it's locally connected, KILL IT! */
 306                         Instance->SNO->WriteToSnoMask('l',"RSQUIT: Server \002%s\002 removed from network by %s: %s", params[0].c_str(), prefix.c_str(), params[1].c_str());
 307                         sock->Squit(s,"Server quit by " + prefix + ": " + params[1]);
 308                         Instance->SE->DelFd(sock);
 309                         sock->Close();
 310                         delete sock;
 311                 }
 312                 else
 313                 {
 314                         /* route the rsquit */
 315                         params[1] = ":" + params[1];
 316                         Utils->DoOneToOne(prefix, "RSQUIT", params, params[0]);
 317                 }
 318         }
 319         else
 320         {
 321                 /* mother fucker! it doesn't exist */
 322         }
 323
 324         return true;
 325 }
 326
 327 bool TreeSocket::ServiceJoin(const std::string &prefix, std::deque<std::string> &params)
 328 {
 329         if (params.size() < 2)
 330                 return true;
 331
 332         userrec* u = this->Instance->FindNick(params[0]);
 333
 334         if (u)
 335         {
 336                 /* only join if it's local, otherwise just pass it on! */
 337                 if (IS_LOCAL(u))
 338                         chanrec::JoinUser(this->Instance, u, params[1].c_str(), false);
 339                 Utils->DoOneToAllButSender(prefix,"SVSJOIN",params,prefix);
 340         }
 341         return true;
 342 }
 343
 344 bool TreeSocket::RemoteRehash(const std::string &prefix, std::deque<std::string> &params)
 345 {
 346         if (params.size() < 1)
 347                 return false;
 348
 349         std::string servermask = params[0];
 350
 351         if (this->Instance->MatchText(this->Instance->Config->ServerName,servermask))
 352         {
 353                 this->Instance->SNO->WriteToSnoMask('l',"Remote rehash initiated by \002"+prefix+"\002.");
 354                 this->Instance->RehashServer();
 355                 Utils->ReadConfiguration(false);
 356                 InitializeDisabledCommands(Instance->Config->DisabledCommands, Instance);
 357         }
 358         Utils->DoOneToAllButSender(prefix,"REHASH",params,prefix);
 359         return true;
 360 }
 361
 362 bool TreeSocket::RemoteKill(const std::string &prefix, std::deque<std::string> &params)
 363 {
 364         if (params.size() != 2)
 365                 return true;
 366
 367         std::string nick = params[0];
 368         userrec* u = this->Instance->FindNick(prefix);
 369         userrec* who = this->Instance->FindNick(nick);
 370
 371         if (who)
 372         {
 373                 /* Prepend kill source, if we don't have one */
 374                 std::string sourceserv = prefix;
 375                 if (u)
 376                 {
 377                         sourceserv = u->server;
 378                 }
 379                 if (*(params[1].c_str()) != '[')
 380                 {
 381                         params[1] = "[" + sourceserv + "] Killed (" + params[1] +")";
 382                 }
 383                 std::string reason = params[1];
 384                 params[1] = ":" + params[1];
 385                 Utils->DoOneToAllButSender(prefix,"KILL",params,sourceserv);
 386                 who->Write(":%s KILL %s :%s (%s)", sourceserv.c_str(), who->nick, sourceserv.c_str(), reason.c_str());
 387                 userrec::QuitUser(this->Instance,who,reason);
 388         }
 389         return true;
 390 }
 391
 392 bool TreeSocket::LocalPong(const std::string &prefix, std::deque<std::string> &params)
 393 {
 394         if (params.size() < 1)
 395                 return true;
 396
 397         if (params.size() == 1)
 398         {
 399                 TreeServer* ServerSource = Utils->FindServer(prefix);
 400                 if (ServerSource)
 401                 {
 402                         ServerSource->SetPingFlag();
 403                 }
 404         }
 405         else
 406         {
 407                 std::string forwardto = params[1];
 408                 if (forwardto == this->Instance->Config->ServerName)
 409                 {
 410                         /*
 411                          * this is a PONG for us
 412                          * if the prefix is a user, check theyre local, and if they are,
 413                          * dump the PONG reply back to their fd. If its a server, do nowt.
 414                          * Services might want to send these s->s, but we dont need to yet.
 415                          */
 416                         userrec* u = this->Instance->FindNick(prefix);
 417                         if (u)
 418                         {
 419                                 u->WriteServ("PONG %s %s",params[0].c_str(),params[1].c_str());
 420                         }
 421                 }
 422                 else
 423                 {
 424                         // not for us, pass it on :)
 425                         Utils->DoOneToOne(prefix,"PONG",params,forwardto);
 426                 }
 427         }
 428
 429         return true;
 430 }
 431
 432 bool TreeSocket::MetaData(const std::string &prefix, std::deque<std::string> &params)
 433 {
 434         if (params.size() < 2)
 435                 return true;
 436         else
 437                 params.push_back("");
 438         TreeServer* ServerSource = Utils->FindServer(prefix);
 439         if (ServerSource)
 440         {
 441                 if (params[0] == "*")
 442                 {
 443                         FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_OTHER,NULL,params[1],params[2]));
 444                 }
 445                 else if (*(params[0].c_str()) == '#')
 446                 {
 447                         chanrec* c = this->Instance->FindChan(params[0]);
 448                         if (c)
 449                         {
 450                                 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]));
 451                         }
 452                 }
 453                 else if (*(params[0].c_str()) != '#')
 454                 {
 455                         userrec* u = this->Instance->FindNick(params[0]);
 456                         if (u)
 457                         {
 458                                 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2]));
 459                         }
 460                 }
 461         }
 462
 463         params[2] = ":" + params[2];
 464         Utils->DoOneToAllButSender(prefix,"METADATA",params,prefix);
 465         return true;
 466 }
 467
 468 bool TreeSocket::ServerVersion(const std::string &prefix, std::deque<std::string> &params)
 469 {
 470         if (params.size() < 1)
 471                 return true;
 472
 473         TreeServer* ServerSource = Utils->FindServer(prefix);
 474
 475         if (ServerSource)
 476         {
 477                 ServerSource->SetVersion(params[0]);
 478         }
 479         params[0] = ":" + params[0];
 480         Utils->DoOneToAllButSender(prefix,"VERSION",params,prefix);
 481         return true;
 482 }
 483
 484 bool TreeSocket::ChangeHost(const std::string &prefix, std::deque<std::string> &params)
 485 {
 486         if (params.size() < 1)
 487                 return true;
 488         userrec* u = this->Instance->FindNick(prefix);
 489
 490         if (u)
 491         {
 492                 u->ChangeDisplayedHost(params[0].c_str());
 493                 Utils->DoOneToAllButSender(prefix,"FHOST",params,u->server);
 494         }
 495         return true;
 496 }
 497
 498 bool TreeSocket::AddLine(const std::string &prefix, std::deque<std::string> &params)
 499 {
 500         if (params.size() < 6)
 501                 return true;
 502         bool propogate = false;
 503         if (!this->bursting)
 504                 Utils->lines_to_apply = 0;
 505         switch (*(params[0].c_str()))
 506         {
 507                 case 'Z':
 508                         propogate = Instance->XLines->add_zline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
 509                         Instance->XLines->zline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
 510                         if (propogate)
 511                                 Utils->lines_to_apply |= APPLY_ZLINES;
 512                 break;
 513                 case 'Q':
 514                         propogate = Instance->XLines->add_qline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
 515                         Instance->XLines->qline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
 516                         if (propogate)
 517                                 Utils->lines_to_apply |= APPLY_QLINES;
 518                 break;
 519                 case 'E':
 520                         propogate = Instance->XLines->add_eline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
 521                         Instance->XLines->eline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
 522                 break;
 523                 case 'G':
 524                         propogate = Instance->XLines->add_gline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
 525                         Instance->XLines->gline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
 526                         if (propogate)
 527                                 Utils->lines_to_apply |= APPLY_GLINES;
 528                 break;
 529                 case 'K':
 530                         propogate = Instance->XLines->add_kline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
 531                         if (propogate)
 532                                 Utils->lines_to_apply |= APPLY_KLINES;
 533                 break;
 534                 default:
 535                         /* Just in case... */
 536                         this->Instance->SNO->WriteToSnoMask('x',"\2WARNING\2: Invalid xline type '"+params[0]+"' sent by server "+prefix+", ignored!");
 537                         propogate = false;
 538                 break;
 539         }
 540         /* Send it on its way */
 541         if (propogate)
 542         {
 543                 if (atoi(params[4].c_str()))
 544                 {
 545                         this->Instance->SNO->WriteToSnoMask('x',"%s Added %cLINE on %s to expire in %lu seconds (%s).",prefix.c_str(),*(params[0].c_str()),params[1].c_str(),atoi(params[4].c_str()),params[5].c_str());
 546                 }
 547                 else
 548                 {
 549                         this->Instance->SNO->WriteToSnoMask('x',"%s Added permenant %cLINE on %s (%s).",prefix.c_str(),*(params[0].c_str()),params[1].c_str(),params[5].c_str());
 550                 }
 551                 params[5] = ":" + params[5];
 552                 Utils->DoOneToAllButSender(prefix,"ADDLINE",params,prefix);
 553         }
 554         if (!this->bursting)
 555         {
 556                 Instance->XLines->apply_lines(Utils->lines_to_apply);
 557                 Utils->lines_to_apply = 0;
 558         }
 559         return true;
 560 }
 561
 562 bool TreeSocket::ChangeName(const std::string &prefix, std::deque<std::string> &params)
 563 {
 564         if (params.size() < 1)
 565                 return true;
 566         userrec* u = this->Instance->FindNick(prefix);
 567         if (u)
 568         {
 569                 u->ChangeName(params[0].c_str());
 570                 params[0] = ":" + params[0];
 571                 Utils->DoOneToAllButSender(prefix,"FNAME",params,u->server);
 572         }
 573         return true;
 574 }
 575
 576 bool TreeSocket::Whois(const std::string &prefix, std::deque<std::string> &params)
 577 {
 578         if (params.size() < 1)
 579                 return true;
 580         userrec* u = this->Instance->FindNick(prefix);
 581         if (u)
 582         {
 583                 // an incoming request
 584                 if (params.size() == 1)
 585                 {
 586                         userrec* x = this->Instance->FindNick(params[0]);
 587                         if ((x) && (IS_LOCAL(x)))
 588                         {
 589                                 userrec* x = this->Instance->FindNick(params[0]);
 590                                 char signon[MAXBUF];
 591                                 char idle[MAXBUF];
 592                                 snprintf(signon,MAXBUF,"%lu",(unsigned long)x->signon);
 593                                 snprintf(idle,MAXBUF,"%lu",(unsigned long)abs((x->idle_lastmsg)-Instance->Time(true)));
 594                                 std::deque<std::string> par;
 595                                 par.push_back(prefix);
 596                                 par.push_back(signon);
 597                                 par.push_back(idle);
 598                                 // ours, we're done, pass it BACK
 599                                 Utils->DoOneToOne(params[0],"IDLE",par,u->server);
 600                         }
 601                         else
 602                         {
 603                                 // not ours pass it on
 604                                 Utils->DoOneToOne(prefix,"IDLE",params,x->server);
 605                         }
 606                 }
 607                 else if (params.size() == 3)
 608                 {
 609                         std::string who_did_the_whois = params[0];
 610                         userrec* who_to_send_to = this->Instance->FindNick(who_did_the_whois);
 611                         if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
 612                         {
 613                                 // an incoming reply to a whois we sent out
 614                                 std::string nick_whoised = prefix;
 615                                 unsigned long signon = atoi(params[1].c_str());
 616                                 unsigned long idle = atoi(params[2].c_str());
 617                                 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
 618                                         do_whois(this->Instance,who_to_send_to,u,signon,idle,nick_whoised.c_str());
 619                         }
 620                         else
 621                         {
 622                                 // not ours, pass it on
 623                                 Utils->DoOneToOne(prefix,"IDLE",params,who_to_send_to->server);
 624                         }
 625                 }
 626         }
 627         return true;
 628 }
 629
 630 bool TreeSocket::Push(const std::string &prefix, std::deque<std::string> &params)
 631 {
 632         if (params.size() < 2)
 633                 return true;
 634         userrec* u = this->Instance->FindNick(params[0]);
 635         if (!u)
 636                 return true;
 637         if (IS_LOCAL(u))
 638         {
 639                 u->Write(params[1]);
 640         }
 641         else
 642         {
 643                 // continue the raw onwards
 644                 params[1] = ":" + params[1];
 645                 Utils->DoOneToOne(prefix,"PUSH",params,u->server);
 646         }
 647         return true;
 648 }
 649
 650 bool TreeSocket::HandleSetTime(const std::string &prefix, std::deque<std::string> &params)
 651 {
 652         if (!params.size() || !Utils->EnableTimeSync)
 653                 return true;
 654
 655         bool force = false;
 656
 657         if ((params.size() == 2) && (params[1] == "FORCE"))
 658                 force = true;
 659
 660         time_t them = atoi(params[0].c_str());
 661         time_t us = Instance->Time(false);
 662
 663         time_t diff = them - us;
 664
 665         Utils->DoOneToAllButSender(prefix, "TIMESET", params, prefix);
 666
 667         if (force || (them != us))
 668         {
 669                 time_t old = Instance->SetTimeDelta(diff);
 670                 Instance->Log(DEBUG, "TS (diff %d) from %s applied (old delta was %d)", diff, prefix.c_str(), old);
 671         }
 672
 673         return true;
 674 }
 675
 676 bool TreeSocket::Time(const std::string &prefix, std::deque<std::string> &params)
 677 {
 678         // :source.server TIME remote.server sendernick
 679         // :remote.server TIME source.server sendernick TS
 680         if (params.size() == 2)
 681         {
 682                 // someone querying our time?
 683                 if (this->Instance->Config->ServerName == params[0])
 684                 {
 685                         userrec* u = this->Instance->FindNick(params[1]);
 686                         if (u)
 687                         {
 688                                 params.push_back(ConvToStr(Instance->Time(false)));
 689                                 params[0] = prefix;
 690                                 Utils->DoOneToOne(this->Instance->Config->ServerName,"TIME",params,params[0]);
 691                         }
 692                 }
 693                 else
 694                 {
 695                         // not us, pass it on
 696                         userrec* u = this->Instance->FindNick(params[1]);
 697                         if (u)
 698                                 Utils->DoOneToOne(prefix,"TIME",params,params[0]);
 699                 }
 700         }
 701         else if (params.size() == 3)
 702         {
 703                 // a response to a previous TIME
 704                 userrec* u = this->Instance->FindNick(params[1]);
 705                 if ((u) && (IS_LOCAL(u)))
 706                 {
 707                         time_t rawtime = atol(params[2].c_str());
 708                         struct tm * timeinfo;
 709                         timeinfo = localtime(&rawtime);
 710                         char tms[26];
 711                         snprintf(tms,26,"%s",asctime(timeinfo));
 712                         tms[24] = 0;
 713                         u->WriteServ("391 %s %s :%s",u->nick,prefix.c_str(),tms);
 714                 }
 715                 else
 716                 {
 717                         if (u)
 718                                 Utils->DoOneToOne(prefix,"TIME",params,u->server);
 719                 }
 720         }
 721         return true;
 722 }
 723
 724 bool TreeSocket::LocalPing(const std::string &prefix, std::deque<std::string> &params)
 725 {
 726         if (params.size() < 1)
 727                 return true;
 728         if (params.size() == 1)
 729         {
 730                 std::string stufftobounce = params[0];
 731                 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" PONG "+stufftobounce);
 732                 return true;
 733         }
 734         else
 735         {
 736                 std::string forwardto = params[1];
 737                 if (forwardto == this->Instance->Config->ServerName)
 738                 {
 739                         // this is a ping for us, send back PONG to the requesting server
 740                         params[1] = params[0];
 741                         params[0] = forwardto;
 742                         Utils->DoOneToOne(forwardto,"PONG",params,params[1]);
 743                 }
 744                 else
 745                 {
 746                         // not for us, pass it on :)
 747                         Utils->DoOneToOne(prefix,"PING",params,forwardto);
 748                 }
 749                 return true;
 750         }
 751 }
 752
 753 /** TODO: This creates a total mess of output and needs to really use irc::modestacker.
 754  */
 755 bool TreeSocket::RemoveStatus(const std::string &prefix, std::deque<std::string> &params)
 756 {
 757         if (params.size() < 1)
 758                 return true;
 759         chanrec* c = Instance->FindChan(params[0]);
 760         if (c)
 761         {
 762                 for (char modeletter = 'A'; modeletter <= 'z'; modeletter++)
 763                 {
 764                         ModeHandler* mh = Instance->Modes->FindMode(modeletter, MODETYPE_CHANNEL);
 765                         if (mh)
 766                                 mh->RemoveMode(c);
 767                 }
 768         }
 769         return true;
 770 }
 771
 772 bool TreeSocket::RemoteServer(const std::string &prefix, std::deque<std::string> &params)
 773 {
 774         if (params.size() < 4)
 775                 return false;
 776         std::string servername = params[0];
 777         std::string password = params[1];
 778         // hopcount is not used for a remote server, we calculate this ourselves
 779         std::string description = params[3];
 780         TreeServer* ParentOfThis = Utils->FindServer(prefix);
 781         if (!ParentOfThis)
 782         {
 783                 this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
 784                 return false;
 785         }
 786         TreeServer* CheckDupe = Utils->FindServer(servername);
 787         if (CheckDupe)
 788         {
 789                 this->WriteLine("ERROR :Server "+servername+" already exists!");
 790                 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+servername+"\2 denied, already exists");
 791                 return false;
 792         }
 793         TreeServer* Node = new TreeServer(this->Utils,this->Instance,servername,description,ParentOfThis,NULL);
 794         ParentOfThis->AddChild(Node);
 795         params[3] = ":" + params[3];
 796         Utils->DoOneToAllButSender(prefix,"SERVER",params,prefix);
 797         this->Instance->SNO->WriteToSnoMask('l',"Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
 798         return true;
 799 }
 800
 801 bool TreeSocket::Outbound_Reply_Server(std::deque<std::string> &params)
 802 {
 803         if (params.size() < 4)
 804                 return false;
 805
 806         irc::string servername = params[0].c_str();
 807         std::string sname = params[0];
 808         std::string password = params[1];
 809         int hops = atoi(params[2].c_str());
 810
 811         if (hops)
 812         {
 813                 this->WriteLine("ERROR :Server too far away for authentication");
 814                 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
 815                 return false;
 816         }
 817         std::string description = params[3];
 818         for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
 819         {
 820                 if ((x->Name == servername) && (x->RecvPass == password))
 821                 {
 822                         TreeServer* CheckDupe = Utils->FindServer(sname);
 823                         if (CheckDupe)
 824                         {
 825                                 this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
 826                                 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
 827                                 return false;
 828                         }
 829                         // Begin the sync here. this kickstarts the
 830                         // other side, waiting in WAIT_AUTH_2 state,
 831                         // into starting their burst, as it shows
 832                         // that we're happy.
 833                         this->LinkState = CONNECTED;
 834                         // we should add the details of this server now
 835                         // to the servers tree, as a child of the root
 836                         // node.
 837                         TreeServer* Node = new TreeServer(this->Utils,this->Instance,sname,description,Utils->TreeRoot,this);
 838                         Utils->TreeRoot->AddChild(Node);
 839                         params[3] = ":" + params[3];
 840                         Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,sname);
 841                         this->bursting = true;
 842                         this->DoBurst(Node);
 843                         return true;
 844                 }
 845         }
 846         this->WriteLine("ERROR :Invalid credentials");
 847         this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
 848         return false;
 849 }
 850
 851 bool TreeSocket::Inbound_Server(std::deque<std::string> &params)
 852 {
 853         if (params.size() < 4)
 854                 return false;
 855         irc::string servername = params[0].c_str();
 856         std::string sname = params[0];
 857         std::string password = params[1];
 858         int hops = atoi(params[2].c_str());
 859
 860         if (hops)
 861         {
 862                 this->WriteLine("ERROR :Server too far away for authentication");
 863                 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
 864                 return false;
 865         }
 866         std::string description = params[3];
 867         for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
 868         {
 869                 if ((x->Name == servername) && (x->RecvPass == password))
 870                 {
 871                         TreeServer* CheckDupe = Utils->FindServer(sname);
 872                         if (CheckDupe)
 873                         {
 874                                 this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
 875                                 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
 876                                 return false;
 877                         }
 878                         this->Instance->SNO->WriteToSnoMask('l',"Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] ("+description+")");
 879                         if (this->Hook)
 880                         {
 881                                 std::string name = InspSocketNameRequest((Module*)Utils->Creator, this->Hook).Send();
 882                                 this->Instance->SNO->WriteToSnoMask('l',"Connection from \2"+sname+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] using transport \2"+name+"\2");
 883                         }
 884
 885                         this->InboundServerName = sname;
 886                         this->InboundDescription = description;
 887                         // this is good. Send our details: Our server name and description and hopcount of 0,
 888                         // along with the sendpass from this block.
 889                         this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc);
 890                         // move to the next state, we are now waiting for THEM.
 891                         this->LinkState = WAIT_AUTH_2;
 892                         return true;
 893                 }
 894         }
 895         this->WriteLine("ERROR :Invalid credentials");
 896         this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
 897         return false;
 898 }
 899
 900 void TreeSocket::Split(const std::string &line, std::deque<std::string> &n)
 901 {
 902         n.clear();
 903         irc::tokenstream tokens(line);
 904         std::string param;
 905         while ((param = tokens.GetToken()) != "")
 906                 n.push_back(param);
 907         return;
 908 }
 909
 910 bool TreeSocket::ProcessLine(std::string &line)
 911 {
 912         std::deque<std::string> params;
 913         irc::string command;
 914         std::string prefix;
 915
 916         line = line.substr(0, line.find_first_of("\r\n"));
 917
 918         if (line.empty())
 919                 return true;
 920
 921         Instance->Log(DEBUG, "<- %s", line.c_str());
 922
 923         this->Split(line.c_str(),params);
 924
 925         if ((params[0][0] == ':') && (params.size() > 1))
 926         {
 927                 prefix = params[0].substr(1);
 928                 params.pop_front();
 929         }
 930         command = params[0].c_str();
 931         params.pop_front();
 932         switch (this->LinkState)
 933         {
 934                 TreeServer* Node;
 935
 936                 case WAIT_AUTH_1:
 937                         // Waiting for SERVER command from remote server. Server initiating
 938                         // the connection sends the first SERVER command, listening server
 939                         // replies with theirs if its happy, then if the initiator is happy,
 940                         // it starts to send its net sync, which starts the merge, otherwise
 941                         // it sends an ERROR.
 942                         if (command == "PASS")
 943                         {
 944                                 /* Silently ignored */
 945                         }
 946                         else if (command == "SERVER")
 947                         {
 948                                 return this->Inbound_Server(params);
 949                         }
 950                         else if (command == "ERROR")
 951                         {
 952                                 return this->Error(params);
 953                         }
 954                         else if (command == "USER")
 955                         {
 956                                 this->WriteLine("ERROR :Client connections to this port are prohibited.");
 957                                 return false;
 958                         }
 959                         else if (command == "CAPAB")
 960                         {
 961                                 return this->Capab(params);
 962                         }
 963                         else if ((command == "U") || (command == "S"))
 964                         {
 965                                 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
 966                                 return false;
 967                         }
 968                         else
 969                         {
 970                                 std::string error("ERROR :Invalid command in negotiation phase: ");
 971                                 error.append(command.c_str());
 972                                 this->WriteLine(error);
 973                                 return false;
 974                         }
 975                 break;
 976                 case WAIT_AUTH_2:
 977                         // Waiting for start of other side's netmerge to say they liked our
 978                         // password.
 979                         if (command == "SERVER")
 980                         {
 981                                 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
 982                                 // silently ignore.
 983                                 return true;
 984                         }
 985                         else if ((command == "U") || (command == "S"))
 986                         {
 987                                 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
 988                                 return false;
 989                         }
 990                         else if (command == "BURST")
 991                         {
 992                                 if (params.size() && Utils->EnableTimeSync)
 993                                 {
 994                                         bool we_have_delta = (Instance->Time(false) != Instance->Time(true));
 995                                         time_t them = atoi(params[0].c_str());
 996                                         time_t delta = them - Instance->Time(false);
 997                                         if ((delta < -600) || (delta > 600))
 998                                         {
 999                                                 this->Instance->SNO->WriteToSnoMask('l',"\2ERROR\2: Your clocks are out by %d seconds (this is more than ten minutes). Link aborted, \2PLEASE SYNC YOUR CLOCKS!\2",abs(delta));
1000                                                 this->WriteLine("ERROR :Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than ten minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!");
1001                                                 return false;
1002                                         }
1003
1004                                         if (!Utils->MasterTime && !we_have_delta)
1005                                         {
1006                                                 this->Instance->SetTimeDelta(delta);
1007                                                 // Send this new timestamp to any other servers
1008                                                 Utils->DoOneToMany(Utils->TreeRoot->GetName(), "TIMESET", params);
1009                                         }
1010                                 }
1011                                 this->LinkState = CONNECTED;
1012                                 Node = new TreeServer(this->Utils,this->Instance,InboundServerName,InboundDescription,Utils->TreeRoot,this);
1013                                 Utils->TreeRoot->AddChild(Node);
1014                                 params.clear();
1015                                 params.push_back(InboundServerName);
1016                                 params.push_back("*");
1017                                 params.push_back("1");
1018                                 params.push_back(":"+InboundDescription);
1019                                 Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,InboundServerName);
1020                                 this->bursting = true;
1021                                 this->DoBurst(Node);
1022                         }
1023                         else if (command == "ERROR")
1024                         {
1025                                 return this->Error(params);
1026                         }
1027                         else if (command == "CAPAB")
1028                         {
1029                                 return this->Capab(params);
1030                         }
1031
1032                 break;
1033                 case LISTENER:
1034                         this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
1035                         return false;
1036                 break;
1037                 case CONNECTING:
1038                         if (command == "SERVER")
1039                         {
1040                                 // another server we connected to, which was in WAIT_AUTH_1 state,
1041                                 // has just sent us their credentials. If we get this far, theyre
1042                                 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
1043                                 // if we're happy with this, we should send our netburst which
1044                                 // kickstarts the merge.
1045                                 return this->Outbound_Reply_Server(params);
1046                         }
1047                         else if (command == "ERROR")
1048                         {
1049                                 return this->Error(params);
1050                         }
1051                 break;
1052                 case CONNECTED:
1053                         // This is the 'authenticated' state, when all passwords
1054                         // have been exchanged and anything past this point is taken
1055                         // as gospel.
1056
1057                         if (prefix != "")
1058                         {
1059                                 std::string direction = prefix;
1060                                 userrec* t = this->Instance->FindNick(prefix);
1061                                 if (t)
1062                                 {
1063                                         direction = t->server;
1064                                 }
1065                                 TreeServer* route_back_again = Utils->BestRouteTo(direction);
1066                                 if ((!route_back_again) || (route_back_again->GetSocket() != this))
1067                                 {
1068                                         if (route_back_again)
1069                                                 Instance->Log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
1070                                         return true;
1071                                 }
1072                                 /* Fix by brain:
1073                                  * When there is activity on the socket, reset the ping counter so
1074                                  * that we're not wasting bandwidth pinging an active server.
1075                                  */
1076                                 route_back_again->SetNextPingTime(time(NULL) + 60);
1077                                 route_back_again->SetPingFlag();
1078                         }
1079
1080                         if (command == "SVSMODE")
1081                         {
1082                                 /* Services expects us to implement
1083                                  * SVSMODE. In inspircd its the same as
1084                                  * MODE anyway.
1085                                  */
1086                                 command = "MODE";
1087                         }
1088                         std::string target = "";
1089                         /* Yes, know, this is a mess. Its reasonably fast though as we're
1090                          * working with std::string here.
1091                          */
1092                         if ((command == "NICK") && (params.size() >= 8))
1093                         {
1094                                 return this->IntroduceClient(prefix,params);
1095                         }
1096                         else if (command == "FJOIN")
1097                         {
1098                                 return this->ForceJoin(prefix,params);
1099                         }
1100                         else if (command == "STATS")
1101                         {
1102                                 return this->Stats(prefix, params);
1103                         }
1104                         else if (command == "MOTD")
1105                         {
1106                                 return this->Motd(prefix, params);
1107                         }
1108                         else if (command == "MODULES")
1109                         {
1110                                 return this->Modules(prefix, params);
1111                         }
1112                         else if (command == "ADMIN")
1113                         {
1114                                 return this->Admin(prefix, params);
1115                         }
1116                         else if (command == "SERVER")
1117                         {
1118                                 return this->RemoteServer(prefix,params);
1119                         }
1120                         else if (command == "ERROR")
1121                         {
1122                                 return this->Error(params);
1123                         }
1124                         else if (command == "OPERTYPE")
1125                         {
1126                                 return this->OperType(prefix,params);
1127                         }
1128                         else if (command == "FMODE")
1129                         {
1130                                 return this->ForceMode(prefix,params);
1131                         }
1132                         else if (command == "KILL")
1133                         {
1134                                 return this->RemoteKill(prefix,params);
1135                         }
1136                         else if (command == "FTOPIC")
1137                         {
1138                                 return this->ForceTopic(prefix,params);
1139                         }
1140                         else if (command == "REHASH")
1141                         {
1142                                 return this->RemoteRehash(prefix,params);
1143                         }
1144                         else if (command == "METADATA")
1145                         {
1146                                 return this->MetaData(prefix,params);
1147                         }
1148                         else if (command == "REMSTATUS")
1149                         {
1150                                 return this->RemoveStatus(prefix,params);
1151                         }
1152                         else if (command == "PING")
1153                         {
1154                                 /*
1155                                  * We just got a ping from a server that's bursting.
1156                                  * This can't be right, so set them to not bursting, and
1157                                  * apply their lines.
1158                                  */
1159                                 if (this->bursting)
1160                                 {
1161                                         this->bursting = false;
1162                                         Instance->XLines->apply_lines(Utils->lines_to_apply);
1163                                         Utils->lines_to_apply = 0;
1164                                 }
1165                                 if (prefix == "")
1166                                 {
1167                                         prefix = this->GetName();
1168                                 }
1169                                 return this->LocalPing(prefix,params);
1170                         }
1171                         else if (command == "PONG")
1172                         {
1173                                 /*
1174                                  * We just got a pong from a server that's bursting.
1175                                  * This can't be right, so set them to not bursting, and
1176                                  * apply their lines.
1177                                  */
1178                                 if (this->bursting)
1179                                 {
1180                                         this->bursting = false;
1181                                         Instance->XLines->apply_lines(Utils->lines_to_apply);
1182                                         Utils->lines_to_apply = 0;
1183                                 }
1184                                 if (prefix == "")
1185                                 {
1186                                         prefix = this->GetName();
1187                                 }
1188                                 return this->LocalPong(prefix,params);
1189                         }
1190                         else if (command == "VERSION")
1191                         {
1192                                 return this->ServerVersion(prefix,params);
1193                         }
1194                         else if (command == "FHOST")
1195                         {
1196                                 return this->ChangeHost(prefix,params);
1197                         }
1198                         else if (command == "FNAME")
1199                         {
1200                                 return this->ChangeName(prefix,params);
1201                         }
1202                         else if (command == "ADDLINE")
1203                         {
1204                                 return this->AddLine(prefix,params);
1205                         }
1206                         else if (command == "SVSNICK")
1207                         {
1208                                 if (prefix == "")
1209                                 {
1210                                         prefix = this->GetName();
1211                                 }
1212                                 return this->ForceNick(prefix,params);
1213                         }
1214                         else if (command == "OPERQUIT")
1215                         {
1216                                 return this->OperQuit(prefix,params);
1217                         }
1218                         else if (command == "RSQUIT")
1219                         {
1220                                 return this->RemoteSquit(prefix, params);
1221                         }
1222                         else if (command == "IDLE")
1223                         {
1224                                 return this->Whois(prefix,params);
1225                         }
1226                         else if (command == "PUSH")
1227                         {
1228                                 return this->Push(prefix,params);
1229                         }
1230                         else if (command == "TIMESET")
1231                         {
1232                                 return this->HandleSetTime(prefix, params);
1233                         }
1234                         else if (command == "TIME")
1235                         {
1236                                 return this->Time(prefix,params);
1237                         }
1238                         else if ((command == "KICK") && (Utils->IsServer(prefix)))
1239                         {
1240                                 std::string sourceserv = this->myhost;
1241                                 if (params.size() == 3)
1242                                 {
1243                                         userrec* user = this->Instance->FindNick(params[1]);
1244                                         chanrec* chan = this->Instance->FindChan(params[0]);
1245                                         if (user && chan)
1246                                         {
1247                                                 if (!chan->ServerKickUser(user, params[2].c_str(), false))
1248                                                         /* Yikes, the channels gone! */
1249                                                         delete chan;
1250                                         }
1251                                 }
1252                                 if (this->InboundServerName != "")
1253                                 {
1254                                         sourceserv = this->InboundServerName;
1255                                 }
1256                                 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1257                         }
1258                         else if (command == "SVSJOIN")
1259                         {
1260                                 if (prefix == "")
1261                                 {
1262                                         prefix = this->GetName();
1263                                 }
1264                                 return this->ServiceJoin(prefix,params);
1265                         }
1266                         else if (command == "SQUIT")
1267                         {
1268                                 if (params.size() == 2)
1269                                 {
1270                                         this->Squit(Utils->FindServer(params[0]),params[1]);
1271                                 }
1272                                 return true;
1273                         }
1274                         else if (command == "OPERNOTICE")
1275                         {
1276                                 std::string sourceserv = this->myhost;
1277                                 if (this->InboundServerName != "")
1278                                         sourceserv = this->InboundServerName;
1279                                 if (params.size() >= 1)
1280                                         Instance->WriteOpers("*** From " + sourceserv + ": " + params[0]);
1281                                 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1282                         }
1283                         else if (command == "MODENOTICE")
1284                         {
1285                                 std::string sourceserv = this->myhost;
1286                                 if (this->InboundServerName != "")
1287                                         sourceserv = this->InboundServerName;
1288                                 if (params.size() >= 2)
1289                                 {
1290                                         Instance->WriteMode(params[0].c_str(), WM_AND, "*** From %s: %s", sourceserv.c_str(), params[1].c_str());
1291                                 }
1292                                 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1293                         }
1294                         else if (command == "SNONOTICE")
1295                         {
1296                                 std::string sourceserv = this->myhost;
1297                                 if (this->InboundServerName != "")
1298                                         sourceserv = this->InboundServerName;
1299                                 if (params.size() >= 2)
1300                                 {
1301                                         Instance->SNO->WriteToSnoMask(*(params[0].c_str()), "From " + sourceserv + ": "+ params[1]);
1302                                 }
1303                                 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1304                         }
1305                         else if (command == "ENDBURST")
1306                         {
1307                                 this->bursting = false;
1308                                 Instance->XLines->apply_lines(Utils->lines_to_apply);
1309                                 Utils->lines_to_apply = 0;
1310                                 std::string sourceserv = this->myhost;
1311                                 if (this->InboundServerName != "")
1312                                 {
1313                                         sourceserv = this->InboundServerName;
1314                                 }
1315                                 this->Instance->SNO->WriteToSnoMask('l',"Received end of netburst from \2%s\2",sourceserv.c_str());
1316
1317                                 Event rmode((char*)sourceserv.c_str(), (Module*)Utils->Creator, "new_server");
1318                                 rmode.Send(Instance);
1319
1320                                 return true;
1321                         }
1322                         else
1323                         {
1324                                 // not a special inter-server command.
1325                                 // Emulate the actual user doing the command,
1326                                 // this saves us having a huge ugly parser.
1327                                 userrec* who = this->Instance->FindNick(prefix);
1328                                 std::string sourceserv = this->myhost;
1329                                 if (this->InboundServerName != "")
1330                                 {
1331                                         sourceserv = this->InboundServerName;
1332                                 }
1333                                 if ((!who) && (command == "MODE"))
1334                                 {
1335                                         if (Utils->IsServer(prefix))
1336                                         {
1337                                                 const char* modelist[127];
1338                                                 for (size_t i = 0; i < params.size(); i++)
1339                                                         modelist[i] = params[i].c_str();
1340                                                 userrec* fake = new userrec(Instance);
1341                                                 fake->SetFd(FD_MAGIC_NUMBER);
1342                                                 this->Instance->SendMode(modelist, params.size(), fake);
1343
1344                                                 delete fake;
1345                                                 /* Hot potato! pass it on! */
1346                                                 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1347                                         }
1348                                 }
1349                                 if (who)
1350                                 {
1351                                         if ((command == "NICK") && (params.size() > 0))
1352                                         {
1353                                                 /* On nick messages, check that the nick doesnt
1354                                                  * already exist here. If it does, kill their copy,
1355                                                  * and our copy.
1356                                                  */
1357                                                 userrec* x = this->Instance->FindNick(params[0]);
1358                                                 if ((x) && (x != who))
1359                                                 {
1360                                                         std::deque<std::string> p;
1361                                                         p.push_back(params[0]);
1362                                                         p.push_back("Nickname collision ("+prefix+" -> "+params[0]+")");
1363                                                         Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
1364                                                         p.clear();
1365                                                         p.push_back(prefix);
1366                                                         p.push_back("Nickname collision");
1367                                                         Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
1368                                                         userrec::QuitUser(this->Instance,x,"Nickname collision ("+prefix+" -> "+params[0]+")");
1369                                                         userrec* y = this->Instance->FindNick(prefix);
1370                                                         if (y)
1371                                                         {
1372                                                                 userrec::QuitUser(this->Instance,y,"Nickname collision");
1373                                                         }
1374                                                         return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1375                                                 }
1376                                         }
1377                                         // its a user
1378                                         target = who->server;
1379                                         const char* strparams[127];
1380                                         for (unsigned int q = 0; q < params.size(); q++)
1381                                         {
1382                                                 strparams[q] = params[q].c_str();
1383                                         }
1384                                         switch (this->Instance->CallCommandHandler(command.c_str(), strparams, params.size(), who))
1385                                         {
1386                                                 case CMD_INVALID:
1387                                                         this->WriteLine("ERROR :Unrecognised command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules");
1388                                                         return false;
1389                                                 break;
1390                                                 case CMD_FAILURE:
1391                                                         return true;
1392                                                 break;
1393                                                 default:
1394                                                         /* CMD_SUCCESS and CMD_USER_DELETED fall through here */
1395                                                 break;
1396                                         }
1397                                 }
1398                                 else
1399                                 {
1400                                         // its not a user. Its either a server, or somethings screwed up.
1401                                         if (Utils->IsServer(prefix))
1402                                                 target = this->Instance->Config->ServerName;
1403                                         else
1404                                                 return true;
1405                                 }
1406                                 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1407
1408                         }
1409                         return true;
1410                 break;
1411         }
1412         return true;
1413 }
1414
1415 std::string TreeSocket::GetName()
1416 {
1417         std::string sourceserv = this->myhost;
1418         if (this->InboundServerName != "")
1419         {
1420                 sourceserv = this->InboundServerName;
1421         }
1422         return sourceserv;
1423 }
1424
1425 void TreeSocket::OnTimeout()
1426 {
1427         if (this->LinkState == CONNECTING)
1428         {
1429                 this->Instance->SNO->WriteToSnoMask('l',"CONNECT: Connection to \002"+myhost+"\002 timed out.");
1430                 Link* MyLink = Utils->FindLink(myhost);
1431                 if (MyLink)
1432                         Utils->DoFailOver(MyLink);
1433         }
1434 }
1435
1436 void TreeSocket::OnClose()
1437 {
1438         // Connection closed.
1439         // If the connection is fully up (state CONNECTED)
1440         // then propogate a netsplit to all peers.
1441         std::string quitserver = this->myhost;
1442         if (this->InboundServerName != "")
1443         {
1444                 quitserver = this->InboundServerName;
1445         }
1446         TreeServer* s = Utils->FindServer(quitserver);
1447         if (s)
1448         {
1449                 Squit(s,"Remote host closed the connection");
1450         }
1451
1452         if (quitserver != "")
1453                 this->Instance->SNO->WriteToSnoMask('l',"Connection to '\2%s\2' failed.",quitserver.c_str());
1454 }
1455
1456 int TreeSocket::OnIncomingConnection(int newsock, char* ip)
1457 {
1458         /* To prevent anyone from attempting to flood opers/DDoS by connecting to the server port,
1459          * or discovering if this port is the server port, we don't allow connections from any
1460          * IPs for which we don't have a link block.
1461          */
1462         bool found = false;
1463
1464         found = (std::find(Utils->ValidIPs.begin(), Utils->ValidIPs.end(), ip) != Utils->ValidIPs.end());
1465         if (!found)
1466         {
1467                 for (vector<std::string>::iterator i = Utils->ValidIPs.begin(); i != Utils->ValidIPs.end(); i++)
1468                         if (irc::sockets::MatchCIDR(ip, (*i).c_str()))
1469                                 found = true;
1470
1471                 if (!found)
1472                 {
1473                         this->Instance->SNO->WriteToSnoMask('l',"Server connection from %s denied (no link blocks with that IP address)", ip);
1474                         close(newsock);
1475                         return false;
1476                 }
1477         }
1478
1479         TreeSocket* s = new TreeSocket(this->Utils, this->Instance, newsock, ip, this->Hook);
1480         s = s; /* Whinge whinge whinge, thats all GCC ever does. */
1481         return true;
1482 }