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