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