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() < 2)
 365                 return true;
 366         else
 367                 params.push_back("");
 368         TreeServer* ServerSource = Utils->FindServer(prefix);
 369         if (ServerSource)
 370         {
 371                 if (params[0] == "*")
 372                 {
 373                         FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_OTHER,NULL,params[1],params[2]));
 374                 }
 375                 else if (*(params[0].c_str()) == '#')
 376                 {
 377                         chanrec* c = this->Instance->FindChan(params[0]);
 378                         if (c)
 379                         {
 380                                 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]));
 381                         }
 382                 }
 383                 else if (*(params[0].c_str()) != '#')
 384                 {
 385                         userrec* u = this->Instance->FindNick(params[0]);
 386                         if (u)
 387                         {
 388                                 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2]));
 389                         }
 390                 }
 391         }
 392
 393         params[2] = ":" + params[2];
 394         Utils->DoOneToAllButSender(prefix,"METADATA",params,prefix);
 395         return true;
 396 }
 397
 398 bool TreeSocket::ServerVersion(const std::string &prefix, std::deque<std::string> &params)
 399 {
 400         if (params.size() < 1)
 401                 return true;
 402
 403         TreeServer* ServerSource = Utils->FindServer(prefix);
 404
 405         if (ServerSource)
 406         {
 407                 ServerSource->SetVersion(params[0]);
 408         }
 409         params[0] = ":" + params[0];
 410         Utils->DoOneToAllButSender(prefix,"VERSION",params,prefix);
 411         return true;
 412 }
 413
 414 bool TreeSocket::ChangeHost(const std::string &prefix, std::deque<std::string> &params)
 415 {
 416         if (params.size() < 1)
 417                 return true;
 418         userrec* u = this->Instance->FindNick(prefix);
 419
 420         if (u)
 421         {
 422                 u->ChangeDisplayedHost(params[0].c_str());
 423                 Utils->DoOneToAllButSender(prefix,"FHOST",params,u->server);
 424         }
 425         return true;
 426 }
 427
 428 bool TreeSocket::AddLine(const std::string &prefix, std::deque<std::string> &params)
 429 {
 430         if (params.size() < 6)
 431                 return true;
 432         bool propogate = false;
 433         if (!this->bursting)
 434                 Utils->lines_to_apply = 0;
 435         switch (*(params[0].c_str()))
 436         {
 437                 case 'Z':
 438                         propogate = Instance->XLines->add_zline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
 439                         Instance->XLines->zline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
 440                         if (propogate)
 441                                 Utils->lines_to_apply |= APPLY_ZLINES;
 442                 break;
 443                 case 'Q':
 444                         propogate = Instance->XLines->add_qline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
 445                         Instance->XLines->qline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
 446                         if (propogate)
 447                                 Utils->lines_to_apply |= APPLY_QLINES;
 448                 break;
 449                 case 'E':
 450                         propogate = Instance->XLines->add_eline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
 451                         Instance->XLines->eline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
 452                 break;
 453                 case 'G':
 454                         propogate = Instance->XLines->add_gline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
 455                         Instance->XLines->gline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
 456                         if (propogate)
 457                                 Utils->lines_to_apply |= APPLY_GLINES;
 458                 break;
 459                 case 'K':
 460                         propogate = Instance->XLines->add_kline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
 461                         if (propogate)
 462                                 Utils->lines_to_apply |= APPLY_KLINES;
 463                 break;
 464                 default:
 465                         /* Just in case... */
 466                         this->Instance->SNO->WriteToSnoMask('x',"\2WARNING\2: Invalid xline type '"+params[0]+"' sent by server "+prefix+", ignored!");
 467                         propogate = false;
 468                 break;
 469         }
 470         /* Send it on its way */
 471         if (propogate)
 472         {
 473                 if (atoi(params[4].c_str()))
 474                 {
 475                         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());
 476                 }
 477                 else
 478                 {
 479                         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());
 480                 }
 481                 params[5] = ":" + params[5];
 482                 Utils->DoOneToAllButSender(prefix,"ADDLINE",params,prefix);
 483         }
 484         if (!this->bursting)
 485         {
 486                 Instance->XLines->apply_lines(Utils->lines_to_apply);
 487                 Utils->lines_to_apply = 0;
 488         }
 489         return true;
 490 }
 491
 492 bool TreeSocket::ChangeName(const std::string &prefix, std::deque<std::string> &params)
 493 {
 494         if (params.size() < 1)
 495                 return true;
 496         userrec* u = this->Instance->FindNick(prefix);
 497         if (u)
 498         {
 499                 u->ChangeName(params[0].c_str());
 500                 params[0] = ":" + params[0];
 501                 Utils->DoOneToAllButSender(prefix,"FNAME",params,u->server);
 502         }
 503         return true;
 504 }
 505
 506 bool TreeSocket::Whois(const std::string &prefix, std::deque<std::string> &params)
 507 {
 508         if (params.size() < 1)
 509                 return true;
 510         userrec* u = this->Instance->FindNick(prefix);
 511         if (u)
 512         {
 513                 // an incoming request
 514                 if (params.size() == 1)
 515                 {
 516                         userrec* x = this->Instance->FindNick(params[0]);
 517                         if ((x) && (IS_LOCAL(x)))
 518                         {
 519                                 userrec* x = this->Instance->FindNick(params[0]);
 520                                 char signon[MAXBUF];
 521                                 char idle[MAXBUF];
 522                                 snprintf(signon,MAXBUF,"%lu",(unsigned long)x->signon);
 523                                 snprintf(idle,MAXBUF,"%lu",(unsigned long)abs((x->idle_lastmsg)-Instance->Time(true)));
 524                                 std::deque<std::string> par;
 525                                 par.push_back(prefix);
 526                                 par.push_back(signon);
 527                                 par.push_back(idle);
 528                                 // ours, we're done, pass it BACK
 529                                 Utils->DoOneToOne(params[0],"IDLE",par,u->server);
 530                         }
 531                         else
 532                         {
 533                                 // not ours pass it on
 534                                 Utils->DoOneToOne(prefix,"IDLE",params,x->server);
 535                         }
 536                 }
 537                 else if (params.size() == 3)
 538                 {
 539                         std::string who_did_the_whois = params[0];
 540                         userrec* who_to_send_to = this->Instance->FindNick(who_did_the_whois);
 541                         if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
 542                         {
 543                                 // an incoming reply to a whois we sent out
 544                                 std::string nick_whoised = prefix;
 545                                 unsigned long signon = atoi(params[1].c_str());
 546                                 unsigned long idle = atoi(params[2].c_str());
 547                                 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
 548                                         do_whois(this->Instance,who_to_send_to,u,signon,idle,nick_whoised.c_str());
 549                         }
 550                         else
 551                         {
 552                                 // not ours, pass it on
 553                                 Utils->DoOneToOne(prefix,"IDLE",params,who_to_send_to->server);
 554                         }
 555                 }
 556         }
 557         return true;
 558 }
 559
 560 bool TreeSocket::Push(const std::string &prefix, std::deque<std::string> &params)
 561 {
 562         if (params.size() < 2)
 563                 return true;
 564         userrec* u = this->Instance->FindNick(params[0]);
 565         if (!u)
 566                 return true;
 567         if (IS_LOCAL(u))
 568         {
 569                 u->Write(params[1]);
 570         }
 571         else
 572         {
 573                 // continue the raw onwards
 574                 params[1] = ":" + params[1];
 575                 Utils->DoOneToOne(prefix,"PUSH",params,u->server);
 576         }
 577         return true;
 578 }
 579
 580 bool TreeSocket::HandleSetTime(const std::string &prefix, std::deque<std::string> &params)
 581 {
 582         if (!params.size() || !Utils->EnableTimeSync)
 583                 return true;
 584
 585         bool force = false;
 586
 587         if ((params.size() == 2) && (params[1] == "FORCE"))
 588                 force = true;
 589
 590         time_t rts = atoi(params[0].c_str());
 591         time_t us = Instance->Time(true);
 592
 593         if (rts == us)
 594         {
 595                 Utils->DoOneToAllButSender(prefix, "TIMESET", params, prefix);
 596         }
 597         else if (force || (rts < us))
 598         {
 599                 int old = Instance->SetTimeDelta(rts - us);
 600                 Instance->Log(DEBUG, "%s TS (diff %d) from %s applied (old delta was %d)", (force) ? "Forced" : "Lower", rts - us, prefix.c_str(), old);
 601
 602                 Utils->DoOneToAllButSender(prefix, "TIMESET", params, prefix);
 603         }
 604         else
 605         {
 606                 Instance->Log(DEBUG, "Higher TS (diff %d) from %s overridden", us - rts, prefix.c_str());
 607
 608                 std::deque<std::string> oparams;
 609                 oparams.push_back(ConvToStr(us));
 610
 611                 Utils->DoOneToMany(prefix, "TIMESET", oparams);
 612         }
 613
 614         return true;
 615 }
 616
 617 bool TreeSocket::Time(const std::string &prefix, std::deque<std::string> &params)
 618 {
 619         // :source.server TIME remote.server sendernick
 620         // :remote.server TIME source.server sendernick TS
 621         if (params.size() == 2)
 622         {
 623                 // someone querying our time?
 624                 if (this->Instance->Config->ServerName == params[0])
 625                 {
 626                         userrec* u = this->Instance->FindNick(params[1]);
 627                         if (u)
 628                         {
 629                                 params.push_back(ConvToStr(Instance->Time(false)));
 630                                 params[0] = prefix;
 631                                 Utils->DoOneToOne(this->Instance->Config->ServerName,"TIME",params,params[0]);
 632                         }
 633                 }
 634                 else
 635                 {
 636                         // not us, pass it on
 637                         userrec* u = this->Instance->FindNick(params[1]);
 638                         if (u)
 639                                 Utils->DoOneToOne(prefix,"TIME",params,params[0]);
 640                 }
 641         }
 642         else if (params.size() == 3)
 643         {
 644                 // a response to a previous TIME
 645                 userrec* u = this->Instance->FindNick(params[1]);
 646                 if ((u) && (IS_LOCAL(u)))
 647                 {
 648                         time_t rawtime = atol(params[2].c_str());
 649                         struct tm * timeinfo;
 650                         timeinfo = localtime(&rawtime);
 651                         char tms[26];
 652                         snprintf(tms,26,"%s",asctime(timeinfo));
 653                         tms[24] = 0;
 654                         u->WriteServ("391 %s %s :%s",u->nick,prefix.c_str(),tms);
 655                 }
 656                 else
 657                 {
 658                         if (u)
 659                                 Utils->DoOneToOne(prefix,"TIME",params,u->server);
 660                 }
 661         }
 662         return true;
 663 }
 664
 665 bool TreeSocket::LocalPing(const std::string &prefix, std::deque<std::string> &params)
 666 {
 667         if (params.size() < 1)
 668                 return true;
 669         if (params.size() == 1)
 670         {
 671                 std::string stufftobounce = params[0];
 672                 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" PONG "+stufftobounce);
 673                 return true;
 674         }
 675         else
 676         {
 677                 std::string forwardto = params[1];
 678                 if (forwardto == this->Instance->Config->ServerName)
 679                 {
 680                         // this is a ping for us, send back PONG to the requesting server
 681                         params[1] = params[0];
 682                         params[0] = forwardto;
 683                         Utils->DoOneToOne(forwardto,"PONG",params,params[1]);
 684                 }
 685                 else
 686                 {
 687                         // not for us, pass it on :)
 688                         Utils->DoOneToOne(prefix,"PING",params,forwardto);
 689                 }
 690                 return true;
 691         }
 692 }
 693
 694 /** TODO: This creates a total mess of output and needs to really use irc::modestacker.
 695  */
 696 bool TreeSocket::RemoveStatus(const std::string &prefix, std::deque<std::string> &params)
 697 {
 698         if (params.size() < 1)
 699                 return true;
 700         chanrec* c = Instance->FindChan(params[0]);
 701         if (c)
 702         {
 703                 for (char modeletter = 'A'; modeletter <= 'z'; modeletter++)
 704                 {
 705                         ModeHandler* mh = Instance->Modes->FindMode(modeletter, MODETYPE_CHANNEL);
 706                         if (mh)
 707                                 mh->RemoveMode(c);
 708                 }
 709         }
 710         return true;
 711 }
 712
 713 bool TreeSocket::RemoteServer(const std::string &prefix, std::deque<std::string> &params)
 714 {
 715         if (params.size() < 4)
 716                 return false;
 717         std::string servername = params[0];
 718         std::string password = params[1];
 719         // hopcount is not used for a remote server, we calculate this ourselves
 720         std::string description = params[3];
 721         TreeServer* ParentOfThis = Utils->FindServer(prefix);
 722         if (!ParentOfThis)
 723         {
 724                 this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
 725                 return false;
 726         }
 727         TreeServer* CheckDupe = Utils->FindServer(servername);
 728         if (CheckDupe)
 729         {
 730                 this->WriteLine("ERROR :Server "+servername+" already exists!");
 731                 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+servername+"\2 denied, already exists");
 732                 return false;
 733         }
 734         TreeServer* Node = new TreeServer(this->Utils,this->Instance,servername,description,ParentOfThis,NULL);
 735         ParentOfThis->AddChild(Node);
 736         params[3] = ":" + params[3];
 737         Utils->DoOneToAllButSender(prefix,"SERVER",params,prefix);
 738         this->Instance->SNO->WriteToSnoMask('l',"Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
 739         return true;
 740 }
 741
 742 bool TreeSocket::Outbound_Reply_Server(std::deque<std::string> &params)
 743 {
 744         if (params.size() < 4)
 745                 return false;
 746
 747         irc::string servername = params[0].c_str();
 748         std::string sname = params[0];
 749         std::string password = params[1];
 750         int hops = atoi(params[2].c_str());
 751
 752         if (hops)
 753         {
 754                 this->WriteLine("ERROR :Server too far away for authentication");
 755                 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
 756                 return false;
 757         }
 758         std::string description = params[3];
 759         for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
 760         {
 761                 if ((x->Name == servername) && (x->RecvPass == password))
 762                 {
 763                         TreeServer* CheckDupe = Utils->FindServer(sname);
 764                         if (CheckDupe)
 765                         {
 766                                 this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
 767                                 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
 768                                 return false;
 769                         }
 770                         // Begin the sync here. this kickstarts the
 771                         // other side, waiting in WAIT_AUTH_2 state,
 772                         // into starting their burst, as it shows
 773                         // that we're happy.
 774                         this->LinkState = CONNECTED;
 775                         // we should add the details of this server now
 776                         // to the servers tree, as a child of the root
 777                         // node.
 778                         TreeServer* Node = new TreeServer(this->Utils,this->Instance,sname,description,Utils->TreeRoot,this);
 779                         Utils->TreeRoot->AddChild(Node);
 780                         params[3] = ":" + params[3];
 781                         Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,sname);
 782                         this->bursting = true;
 783                         this->DoBurst(Node);
 784                         return true;
 785                 }
 786         }
 787         this->WriteLine("ERROR :Invalid credentials");
 788         this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
 789         return false;
 790 }
 791
 792 bool TreeSocket::Inbound_Server(std::deque<std::string> &params)
 793 {
 794         if (params.size() < 4)
 795                 return false;
 796         irc::string servername = params[0].c_str();
 797         std::string sname = params[0];
 798         std::string password = params[1];
 799         int hops = atoi(params[2].c_str());
 800
 801         if (hops)
 802         {
 803                 this->WriteLine("ERROR :Server too far away for authentication");
 804                 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
 805                 return false;
 806         }
 807         std::string description = params[3];
 808         for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
 809         {
 810                 if ((x->Name == servername) && (x->RecvPass == password))
 811                 {
 812                         TreeServer* CheckDupe = Utils->FindServer(sname);
 813                         if (CheckDupe)
 814                         {
 815                                 this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
 816                                 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
 817                                 return false;
 818                         }
 819                         this->Instance->SNO->WriteToSnoMask('l',"Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] ("+description+")");
 820                         if (this->Hook)
 821                         {
 822                                 std::string name = InspSocketNameRequest((Module*)Utils->Creator, this->Hook).Send();
 823                                 this->Instance->SNO->WriteToSnoMask('l',"Connection from \2"+sname+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] using transport \2"+name+"\2");
 824                         }
 825
 826                         this->InboundServerName = sname;
 827                         this->InboundDescription = description;
 828                         // this is good. Send our details: Our server name and description and hopcount of 0,
 829                         // along with the sendpass from this block.
 830                         this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc);
 831                         // move to the next state, we are now waiting for THEM.
 832                         this->LinkState = WAIT_AUTH_2;
 833                         return true;
 834                 }
 835         }
 836         this->WriteLine("ERROR :Invalid credentials");
 837         this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
 838         return false;
 839 }
 840
 841 void TreeSocket::Split(const std::string &line, std::deque<std::string> &n)
 842 {
 843         n.clear();
 844         irc::tokenstream tokens(line);
 845         std::string param;
 846         while ((param = tokens.GetToken()) != "")
 847                 n.push_back(param);
 848         return;
 849 }
 850
 851 bool TreeSocket::ProcessLine(std::string &line)
 852 {
 853         std::deque<std::string> params;
 854         irc::string command;
 855         std::string prefix;
 856
 857         line = line.substr(0, line.find_first_of("\r\n"));
 858
 859         if (line.empty())
 860                 return true;
 861
 862         Instance->Log(DEBUG, "<- %s", line.c_str());
 863
 864         this->Split(line.c_str(),params);
 865
 866         if ((params[0][0] == ':') && (params.size() > 1))
 867         {
 868                 prefix = params[0].substr(1);
 869                 params.pop_front();
 870         }
 871         command = params[0].c_str();
 872         params.pop_front();
 873         switch (this->LinkState)
 874         {
 875                 TreeServer* Node;
 876
 877                 case WAIT_AUTH_1:
 878                         // Waiting for SERVER command from remote server. Server initiating
 879                         // the connection sends the first SERVER command, listening server
 880                         // replies with theirs if its happy, then if the initiator is happy,
 881                         // it starts to send its net sync, which starts the merge, otherwise
 882                         // it sends an ERROR.
 883                         if (command == "PASS")
 884                         {
 885                                 /* Silently ignored */
 886                         }
 887                         else if (command == "SERVER")
 888                         {
 889                                 return this->Inbound_Server(params);
 890                         }
 891                         else if (command == "ERROR")
 892                         {
 893                                 return this->Error(params);
 894                         }
 895                         else if (command == "USER")
 896                         {
 897                                 this->WriteLine("ERROR :Client connections to this port are prohibited.");
 898                                 return false;
 899                         }
 900                         else if (command == "CAPAB")
 901                         {
 902                                 return this->Capab(params);
 903                         }
 904                         else if ((command == "U") || (command == "S"))
 905                         {
 906                                 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
 907                                 return false;
 908                         }
 909                         else
 910                         {
 911                                 std::string error("ERROR :Invalid command in negotiation phase: ");
 912                                 error.append(command.c_str());
 913                                 this->WriteLine(error);
 914                                 return false;
 915                         }
 916                 break;
 917                 case WAIT_AUTH_2:
 918                         // Waiting for start of other side's netmerge to say they liked our
 919                         // password.
 920                         if (command == "SERVER")
 921                         {
 922                                 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
 923                                 // silently ignore.
 924                                 return true;
 925                         }
 926                         else if ((command == "U") || (command == "S"))
 927                         {
 928                                 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
 929                                 return false;
 930                         }
 931                         else if (command == "BURST")
 932                         {
 933                                 if (params.size() && Utils->EnableTimeSync)
 934                                 {
 935                                         /* If a time stamp is provided, apply synchronization */
 936                                         bool force = false;
 937                                         time_t them = atoi(params[0].c_str());
 938                                         time_t us = Instance->Time(false);
 939                                         int delta = them - us;
 940                                         if ((params.size() == 2) && (params[1] == "FORCE"))
 941                                                 force = true;
 942                                         if ((delta < -600) || (delta > 600))
 943                                         {
 944                                                 this->Instance->SNO->WriteToSnoMask('l',"\2ERROR\2: Your clocks are out by %d seconds (this is more than ten minutes). Link aborted, \2PLEASE SYNC YOUR CLOCKS!\2",abs(delta));
 945                                                 this->WriteLine("ERROR :Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than ten minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!");
 946                                                 return false;
 947                                         }
 948
 949                                         if (force || (us > them))
 950                                         {
 951                                                 this->Instance->SetTimeDelta(them - us);
 952                                                 // Send this new timestamp to any other servers
 953                                                 Utils->DoOneToMany(Utils->TreeRoot->GetName(), "TIMESET", params);
 954                                         }
 955                                         else
 956                                         {
 957                                                 // Override the timestamp
 958                                                 this->WriteLine(":" + Utils->TreeRoot->GetName() + " TIMESET " + ConvToStr(us));
 959                                         }
 960                                 }
 961                                 this->LinkState = CONNECTED;
 962                                 Node = new TreeServer(this->Utils,this->Instance,InboundServerName,InboundDescription,Utils->TreeRoot,this);
 963                                 Utils->TreeRoot->AddChild(Node);
 964                                 params.clear();
 965                                 params.push_back(InboundServerName);
 966                                 params.push_back("*");
 967                                 params.push_back("1");
 968                                 params.push_back(":"+InboundDescription);
 969                                 Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,InboundServerName);
 970                                 this->bursting = true;
 971                                 this->DoBurst(Node);
 972                         }
 973                         else if (command == "ERROR")
 974                         {
 975                                 return this->Error(params);
 976                         }
 977                         else if (command == "CAPAB")
 978                         {
 979                                 return this->Capab(params);
 980                         }
 981
 982                 break;
 983                 case LISTENER:
 984                         this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
 985                         return false;
 986                 break;
 987                 case CONNECTING:
 988                         if (command == "SERVER")
 989                         {
 990                                 // another server we connected to, which was in WAIT_AUTH_1 state,
 991                                 // has just sent us their credentials. If we get this far, theyre
 992                                 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
 993                                 // if we're happy with this, we should send our netburst which
 994                                 // kickstarts the merge.
 995                                 return this->Outbound_Reply_Server(params);
 996                         }
 997                         else if (command == "ERROR")
 998                         {
 999                                 return this->Error(params);
1000                         }
1001                 break;
1002                 case CONNECTED:
1003                         // This is the 'authenticated' state, when all passwords
1004                         // have been exchanged and anything past this point is taken
1005                         // as gospel.
1006
1007                         if (prefix != "")
1008                         {
1009                                 std::string direction = prefix;
1010                                 userrec* t = this->Instance->FindNick(prefix);
1011                                 if (t)
1012                                 {
1013                                         direction = t->server;
1014                                 }
1015                                 TreeServer* route_back_again = Utils->BestRouteTo(direction);
1016                                 if ((!route_back_again) || (route_back_again->GetSocket() != this))
1017                                 {
1018                                         if (route_back_again)
1019                                                 Instance->Log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
1020                                         return true;
1021                                 }
1022                                 /* Fix by brain:
1023                                  * When there is activity on the socket, reset the ping counter so
1024                                  * that we're not wasting bandwidth pinging an active server.
1025                                  */
1026                                 route_back_again->SetNextPingTime(time(NULL) + 60);
1027                                 route_back_again->SetPingFlag();
1028                         }
1029
1030                         if (command == "SVSMODE")
1031                         {
1032                                 /* Services expects us to implement
1033                                  * SVSMODE. In inspircd its the same as
1034                                  * MODE anyway.
1035                                  */
1036                                 command = "MODE";
1037                         }
1038                         std::string target = "";
1039                         /* Yes, know, this is a mess. Its reasonably fast though as we're
1040                          * working with std::string here.
1041                          */
1042                         if ((command == "NICK") && (params.size() >= 8))
1043                         {
1044                                 return this->IntroduceClient(prefix,params);
1045                         }
1046                         else if (command == "FJOIN")
1047                         {
1048                                 return this->ForceJoin(prefix,params);
1049                         }
1050                         else if (command == "STATS")
1051                         {
1052                                 return this->Stats(prefix, params);
1053                         }
1054                         else if (command == "MOTD")
1055                         {
1056                                 return this->Motd(prefix, params);
1057                         }
1058                         else if (command == "ADMIN")
1059                         {
1060                                 return this->Admin(prefix, params);
1061                         }
1062                         else if (command == "SERVER")
1063                         {
1064                                 return this->RemoteServer(prefix,params);
1065                         }
1066                         else if (command == "ERROR")
1067                         {
1068                                 return this->Error(params);
1069                         }
1070                         else if (command == "OPERTYPE")
1071                         {
1072                                 return this->OperType(prefix,params);
1073                         }
1074                         else if (command == "FMODE")
1075                         {
1076                                 return this->ForceMode(prefix,params);
1077                         }
1078                         else if (command == "KILL")
1079                         {
1080                                 return this->RemoteKill(prefix,params);
1081                         }
1082                         else if (command == "FTOPIC")
1083                         {
1084                                 return this->ForceTopic(prefix,params);
1085                         }
1086                         else if (command == "REHASH")
1087                         {
1088                                 return this->RemoteRehash(prefix,params);
1089                         }
1090                         else if (command == "METADATA")
1091                         {
1092                                 return this->MetaData(prefix,params);
1093                         }
1094                         else if (command == "REMSTATUS")
1095                         {
1096                                 return this->RemoveStatus(prefix,params);
1097                         }
1098                         else if (command == "PING")
1099                         {
1100                                 /*
1101                                  * We just got a ping from a server that's bursting.
1102                                  * This can't be right, so set them to not bursting, and
1103                                  * apply their lines.
1104                                  */
1105                                 if (this->bursting)
1106                                 {
1107                                         this->bursting = false;
1108                                         Instance->XLines->apply_lines(Utils->lines_to_apply);
1109                                         Utils->lines_to_apply = 0;
1110                                 }
1111                                 if (prefix == "")
1112                                 {
1113                                         prefix = this->GetName();
1114                                 }
1115                                 return this->LocalPing(prefix,params);
1116                         }
1117                         else if (command == "PONG")
1118                         {
1119                                 /*
1120                                  * We just got a pong from a server that's bursting.
1121                                  * This can't be right, so set them to not bursting, and
1122                                  * apply their lines.
1123                                  */
1124                                 if (this->bursting)
1125                                 {
1126                                         this->bursting = false;
1127                                         Instance->XLines->apply_lines(Utils->lines_to_apply);
1128                                         Utils->lines_to_apply = 0;
1129                                 }
1130                                 if (prefix == "")
1131                                 {
1132                                         prefix = this->GetName();
1133                                 }
1134                                 return this->LocalPong(prefix,params);
1135                         }
1136                         else if (command == "VERSION")
1137                         {
1138                                 return this->ServerVersion(prefix,params);
1139                         }
1140                         else if (command == "FHOST")
1141                         {
1142                                 return this->ChangeHost(prefix,params);
1143                         }
1144                         else if (command == "FNAME")
1145                         {
1146                                 return this->ChangeName(prefix,params);
1147                         }
1148                         else if (command == "ADDLINE")
1149                         {
1150                                 return this->AddLine(prefix,params);
1151                         }
1152                         else if (command == "SVSNICK")
1153                         {
1154                                 if (prefix == "")
1155                                 {
1156                                         prefix = this->GetName();
1157                                 }
1158                                 return this->ForceNick(prefix,params);
1159                         }
1160                         else if (command == "RSQUIT")
1161                         {
1162                                 return this->RemoteSquit(prefix, params);
1163                         }
1164                         else if (command == "IDLE")
1165                         {
1166                                 return this->Whois(prefix,params);
1167                         }
1168                         else if (command == "PUSH")
1169                         {
1170                                 return this->Push(prefix,params);
1171                         }
1172                         else if (command == "TIMESET")
1173                         {
1174                                 return this->HandleSetTime(prefix, params);
1175                         }
1176                         else if (command == "TIME")
1177                         {
1178                                 return this->Time(prefix,params);
1179                         }
1180                         else if ((command == "KICK") && (Utils->IsServer(prefix)))
1181                         {
1182                                 std::string sourceserv = this->myhost;
1183                                 if (params.size() == 3)
1184                                 {
1185                                         userrec* user = this->Instance->FindNick(params[1]);
1186                                         chanrec* chan = this->Instance->FindChan(params[0]);
1187                                         if (user && chan)
1188                                         {
1189                                                 if (!chan->ServerKickUser(user, params[2].c_str(), false))
1190                                                         /* Yikes, the channels gone! */
1191                                                         delete chan;
1192                                         }
1193                                 }
1194                                 if (this->InboundServerName != "")
1195                                 {
1196                                         sourceserv = this->InboundServerName;
1197                                 }
1198                                 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1199                         }
1200                         else if (command == "SVSJOIN")
1201                         {
1202                                 if (prefix == "")
1203                                 {
1204                                         prefix = this->GetName();
1205                                 }
1206                                 return this->ServiceJoin(prefix,params);
1207                         }
1208                         else if (command == "SQUIT")
1209                         {
1210                                 if (params.size() == 2)
1211                                 {
1212                                         this->Squit(Utils->FindServer(params[0]),params[1]);
1213                                 }
1214                                 return true;
1215                         }
1216                         else if (command == "OPERNOTICE")
1217                         {
1218                                 std::string sourceserv = this->myhost;
1219                                 if (this->InboundServerName != "")
1220                                         sourceserv = this->InboundServerName;
1221                                 if (params.size() >= 1)
1222                                         Instance->WriteOpers("*** From " + sourceserv + ": " + params[0]);
1223                                 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1224                         }
1225                         else if (command == "MODENOTICE")
1226                         {
1227                                 std::string sourceserv = this->myhost;
1228                                 if (this->InboundServerName != "")
1229                                         sourceserv = this->InboundServerName;
1230                                 if (params.size() >= 2)
1231                                 {
1232                                         Instance->WriteMode(params[0].c_str(), WM_AND, "*** From %s: %s", sourceserv.c_str(), params[1].c_str());
1233                                 }
1234                                 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1235                         }
1236                         else if (command == "SNONOTICE")
1237                         {
1238                                 std::string sourceserv = this->myhost;
1239                                 if (this->InboundServerName != "")
1240                                         sourceserv = this->InboundServerName;
1241                                 if (params.size() >= 2)
1242                                 {
1243                                         Instance->SNO->WriteToSnoMask(*(params[0].c_str()), "From " + sourceserv + ": "+ params[1]);
1244                                 }
1245                                 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1246                         }
1247                         else if (command == "ENDBURST")
1248                         {
1249                                 this->bursting = false;
1250                                 Instance->XLines->apply_lines(Utils->lines_to_apply);
1251                                 Utils->lines_to_apply = 0;
1252                                 std::string sourceserv = this->myhost;
1253                                 if (this->InboundServerName != "")
1254                                 {
1255                                         sourceserv = this->InboundServerName;
1256                                 }
1257                                 this->Instance->SNO->WriteToSnoMask('l',"Received end of netburst from \2%s\2",sourceserv.c_str());
1258
1259                                 Event rmode((char*)sourceserv.c_str(), (Module*)Utils->Creator, "new_server");
1260                                 rmode.Send(Instance);
1261
1262                                 return true;
1263                         }
1264                         else
1265                         {
1266                                 // not a special inter-server command.
1267                                 // Emulate the actual user doing the command,
1268                                 // this saves us having a huge ugly parser.
1269                                 userrec* who = this->Instance->FindNick(prefix);
1270                                 std::string sourceserv = this->myhost;
1271                                 if (this->InboundServerName != "")
1272                                 {
1273                                         sourceserv = this->InboundServerName;
1274                                 }
1275                                 if ((!who) && (command == "MODE"))
1276                                 {
1277                                         if (Utils->IsServer(prefix))
1278                                         {
1279                                                 const char* modelist[127];
1280                                                 for (size_t i = 0; i < params.size(); i++)
1281                                                         modelist[i] = params[i].c_str();
1282                                                 userrec* fake = new userrec(Instance);
1283                                                 fake->SetFd(FD_MAGIC_NUMBER);
1284                                                 this->Instance->SendMode(modelist, params.size(), fake);
1285
1286                                                 delete fake;
1287                                                 /* Hot potato! pass it on! */
1288                                                 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1289                                         }
1290                                 }
1291                                 if (who)
1292                                 {
1293                                         if ((command == "NICK") && (params.size() > 0))
1294                                         {
1295                                                 /* On nick messages, check that the nick doesnt
1296                                                  * already exist here. If it does, kill their copy,
1297                                                  * and our copy.
1298                                                  */
1299                                                 userrec* x = this->Instance->FindNick(params[0]);
1300                                                 if ((x) && (x != who))
1301                                                 {
1302                                                         std::deque<std::string> p;
1303                                                         p.push_back(params[0]);
1304                                                         p.push_back("Nickname collision ("+prefix+" -> "+params[0]+")");
1305                                                         Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
1306                                                         p.clear();
1307                                                         p.push_back(prefix);
1308                                                         p.push_back("Nickname collision");
1309                                                         Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
1310                                                         userrec::QuitUser(this->Instance,x,"Nickname collision ("+prefix+" -> "+params[0]+")");
1311                                                         userrec* y = this->Instance->FindNick(prefix);
1312                                                         if (y)
1313                                                         {
1314                                                                 userrec::QuitUser(this->Instance,y,"Nickname collision");
1315                                                         }
1316                                                         return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1317                                                 }
1318                                         }
1319                                         // its a user
1320                                         target = who->server;
1321                                         const char* strparams[127];
1322                                         for (unsigned int q = 0; q < params.size(); q++)
1323                                         {
1324                                                 strparams[q] = params[q].c_str();
1325                                         }
1326                                         switch (this->Instance->CallCommandHandler(command.c_str(), strparams, params.size(), who))
1327                                         {
1328                                                 case CMD_INVALID:
1329                                                         this->WriteLine("ERROR :Unrecognised command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules");
1330                                                         return false;
1331                                                 break;
1332                                                 case CMD_FAILURE:
1333                                                         return true;
1334                                                 break;
1335                                                 default:
1336                                                         /* CMD_SUCCESS and CMD_USER_DELETED fall through here */
1337                                                 break;
1338                                         }
1339                                 }
1340                                 else
1341                                 {
1342                                         // its not a user. Its either a server, or somethings screwed up.
1343                                         if (Utils->IsServer(prefix))
1344                                                 target = this->Instance->Config->ServerName;
1345                                         else
1346                                                 return true;
1347                                 }
1348                                 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1349
1350                         }
1351                         return true;
1352                 break;
1353         }
1354         return true;
1355 }
1356
1357 std::string TreeSocket::GetName()
1358 {
1359         std::string sourceserv = this->myhost;
1360         if (this->InboundServerName != "")
1361         {
1362                 sourceserv = this->InboundServerName;
1363         }
1364         return sourceserv;
1365 }
1366
1367 void TreeSocket::OnTimeout()
1368 {
1369         if (this->LinkState == CONNECTING)
1370         {
1371                 this->Instance->SNO->WriteToSnoMask('l',"CONNECT: Connection to \002"+myhost+"\002 timed out.");
1372                 Link* MyLink = Utils->FindLink(myhost);
1373                 if (MyLink)
1374                         Utils->DoFailOver(MyLink);
1375         }
1376 }
1377
1378 void TreeSocket::OnClose()
1379 {
1380         // Connection closed.
1381         // If the connection is fully up (state CONNECTED)
1382         // then propogate a netsplit to all peers.
1383         std::string quitserver = this->myhost;
1384         if (this->InboundServerName != "")
1385         {
1386                 quitserver = this->InboundServerName;
1387         }
1388         TreeServer* s = Utils->FindServer(quitserver);
1389         if (s)
1390         {
1391                 Squit(s,"Remote host closed the connection");
1392         }
1393
1394         if (quitserver != "")
1395                 this->Instance->SNO->WriteToSnoMask('l',"Connection to '\2%s\2' failed.",quitserver.c_str());
1396 }
1397
1398 int TreeSocket::OnIncomingConnection(int newsock, char* ip)
1399 {
1400         /* To prevent anyone from attempting to flood opers/DDoS by connecting to the server port,
1401          * or discovering if this port is the server port, we don't allow connections from any
1402          * IPs for which we don't have a link block.
1403          */
1404         bool found = false;
1405
1406         found = (std::find(Utils->ValidIPs.begin(), Utils->ValidIPs.end(), ip) != Utils->ValidIPs.end());
1407         if (!found)
1408         {
1409                 for (vector<std::string>::iterator i = Utils->ValidIPs.begin(); i != Utils->ValidIPs.end(); i++)
1410                         if (irc::sockets::MatchCIDR(ip, (*i).c_str()))
1411                                 found = true;
1412
1413                 if (!found)
1414                 {
1415                         this->Instance->SNO->WriteToSnoMask('l',"Server connection from %s denied (no link blocks with that IP address)", ip);
1416                         close(newsock);
1417                         return false;
1418                 }
1419         }
1420
1421         TreeSocket* s = new TreeSocket(this->Utils, this->Instance, newsock, ip, this->Hook);
1422         s = s; /* Whinge whinge whinge, thats all GCC ever does. */
1423         return true;
1424 }