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