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 really should remove *everything* not just status modes (thanks jilles)
 695  * - This means listmodes, simplemodes, etc too.
 696  */
 697 bool TreeSocket::RemoveStatus(const std::string &prefix, std::deque<std::string> &params)
 698 {
 699         if (params.size() < 1)
 700                 return true;
 701         chanrec* c = Instance->FindChan(params[0]);
 702         if (c)
 703         {
 704                 irc::modestacker modestack(false);
 705                 CUList *ulist = c->GetUsers();
 706                 const char* y[127];
 707                 std::deque<std::string> stackresult;
 708                 std::string x;
 709                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 710                 {
 711                         std::string modesequence = Instance->Modes->ModeString(i->second, c);
 712                         if (modesequence.length())
 713                         {
 714                                 irc::spacesepstream sep(modesequence);
 715                                 std::string modeletters = sep.GetToken();
 716                                 while (!modeletters.empty())
 717                                 {
 718                                         char mletter = *(modeletters.begin());
 719                                         modestack.Push(mletter,sep.GetToken());
 720                                         modeletters.erase(modeletters.begin());
 721                                 }
 722                         }
 723                 }
 724
 725                 while (modestack.GetStackedLine(stackresult))
 726                 {
 727                         stackresult.push_front(ConvToStr(c->age));
 728                         stackresult.push_front(c->name);
 729                         Utils->DoOneToMany(Instance->Config->ServerName, "FMODE", stackresult);
 730                         stackresult.erase(stackresult.begin() + 1);
 731                         for (size_t z = 0; z < stackresult.size(); z++)
 732                         {
 733                                 y[z] = stackresult[z].c_str();
 734                         }
 735                         userrec* n = new userrec(Instance);
 736                         n->SetFd(FD_MAGIC_NUMBER);
 737                         Instance->SendMode(y, stackresult.size(), n);
 738                         delete n;
 739                 }
 740         }
 741         return true;
 742 }
 743
 744 bool TreeSocket::RemoteServer(const std::string &prefix, std::deque<std::string> &params)
 745 {
 746         if (params.size() < 4)
 747                 return false;
 748         std::string servername = params[0];
 749         std::string password = params[1];
 750         // hopcount is not used for a remote server, we calculate this ourselves
 751         std::string description = params[3];
 752         TreeServer* ParentOfThis = Utils->FindServer(prefix);
 753         if (!ParentOfThis)
 754         {
 755                 this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
 756                 return false;
 757         }
 758         TreeServer* CheckDupe = Utils->FindServer(servername);
 759         if (CheckDupe)
 760         {
 761                 this->WriteLine("ERROR :Server "+servername+" already exists!");
 762                 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+servername+"\2 denied, already exists");
 763                 return false;
 764         }
 765         TreeServer* Node = new TreeServer(this->Utils,this->Instance,servername,description,ParentOfThis,NULL);
 766         ParentOfThis->AddChild(Node);
 767         params[3] = ":" + params[3];
 768         Utils->DoOneToAllButSender(prefix,"SERVER",params,prefix);
 769         this->Instance->SNO->WriteToSnoMask('l',"Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
 770         return true;
 771 }
 772
 773 bool TreeSocket::Outbound_Reply_Server(std::deque<std::string> &params)
 774 {
 775         if (params.size() < 4)
 776                 return false;
 777
 778         irc::string servername = params[0].c_str();
 779         std::string sname = params[0];
 780         std::string password = params[1];
 781         int hops = atoi(params[2].c_str());
 782
 783         if (hops)
 784         {
 785                 this->WriteLine("ERROR :Server too far away for authentication");
 786                 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
 787                 return false;
 788         }
 789         std::string description = params[3];
 790         for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
 791         {
 792                 if ((x->Name == servername) && (x->RecvPass == password))
 793                 {
 794                         TreeServer* CheckDupe = Utils->FindServer(sname);
 795                         if (CheckDupe)
 796                         {
 797                                 this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
 798                                 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
 799                                 return false;
 800                         }
 801                         // Begin the sync here. this kickstarts the
 802                         // other side, waiting in WAIT_AUTH_2 state,
 803                         // into starting their burst, as it shows
 804                         // that we're happy.
 805                         this->LinkState = CONNECTED;
 806                         // we should add the details of this server now
 807                         // to the servers tree, as a child of the root
 808                         // node.
 809                         TreeServer* Node = new TreeServer(this->Utils,this->Instance,sname,description,Utils->TreeRoot,this);
 810                         Utils->TreeRoot->AddChild(Node);
 811                         params[3] = ":" + params[3];
 812                         Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,sname);
 813                         this->bursting = true;
 814                         this->DoBurst(Node);
 815                         return true;
 816                 }
 817         }
 818         this->WriteLine("ERROR :Invalid credentials");
 819         this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
 820         return false;
 821 }
 822
 823 bool TreeSocket::Inbound_Server(std::deque<std::string> &params)
 824 {
 825         if (params.size() < 4)
 826                 return false;
 827         irc::string servername = params[0].c_str();
 828         std::string sname = params[0];
 829         std::string password = params[1];
 830         int hops = atoi(params[2].c_str());
 831
 832         if (hops)
 833         {
 834                 this->WriteLine("ERROR :Server too far away for authentication");
 835                 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
 836                 return false;
 837         }
 838         std::string description = params[3];
 839         for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
 840         {
 841                 if ((x->Name == servername) && (x->RecvPass == password))
 842                 {
 843                         TreeServer* CheckDupe = Utils->FindServer(sname);
 844                         if (CheckDupe)
 845                         {
 846                                 this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
 847                                 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
 848                                 return false;
 849                         }
 850                         this->Instance->SNO->WriteToSnoMask('l',"Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] ("+description+")");
 851                         if (this->Hook)
 852                         {
 853                                 std::string name = InspSocketNameRequest((Module*)Utils->Creator, this->Hook).Send();
 854                                 this->Instance->SNO->WriteToSnoMask('l',"Connection from \2"+sname+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] using transport \2"+name+"\2");
 855                         }
 856
 857                         this->InboundServerName = sname;
 858                         this->InboundDescription = description;
 859                         // this is good. Send our details: Our server name and description and hopcount of 0,
 860                         // along with the sendpass from this block.
 861                         this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc);
 862                         // move to the next state, we are now waiting for THEM.
 863                         this->LinkState = WAIT_AUTH_2;
 864                         return true;
 865                 }
 866         }
 867         this->WriteLine("ERROR :Invalid credentials");
 868         this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
 869         return false;
 870 }
 871
 872 void TreeSocket::Split(const std::string &line, std::deque<std::string> &n)
 873 {
 874         n.clear();
 875         irc::tokenstream tokens(line);
 876         std::string param;
 877         while ((param = tokens.GetToken()) != "")
 878                 n.push_back(param);
 879         return;
 880 }
 881
 882 bool TreeSocket::ProcessLine(std::string &line)
 883 {
 884         std::deque<std::string> params;
 885         irc::string command;
 886         std::string prefix;
 887
 888         line = line.substr(0, line.find_first_of("\r\n"));
 889
 890         if (line.empty())
 891                 return true;
 892
 893         Instance->Log(DEBUG, "<- %s", line.c_str());
 894
 895         this->Split(line.c_str(),params);
 896
 897         if ((params[0][0] == ':') && (params.size() > 1))
 898         {
 899                 prefix = params[0].substr(1);
 900                 params.pop_front();
 901         }
 902         command = params[0].c_str();
 903         params.pop_front();
 904         switch (this->LinkState)
 905         {
 906                 TreeServer* Node;
 907
 908                 case WAIT_AUTH_1:
 909                         // Waiting for SERVER command from remote server. Server initiating
 910                         // the connection sends the first SERVER command, listening server
 911                         // replies with theirs if its happy, then if the initiator is happy,
 912                         // it starts to send its net sync, which starts the merge, otherwise
 913                         // it sends an ERROR.
 914                         if (command == "PASS")
 915                         {
 916                                 /* Silently ignored */
 917                         }
 918                         else if (command == "SERVER")
 919                         {
 920                                 return this->Inbound_Server(params);
 921                         }
 922                         else if (command == "ERROR")
 923                         {
 924                                 return this->Error(params);
 925                         }
 926                         else if (command == "USER")
 927                         {
 928                                 this->WriteLine("ERROR :Client connections to this port are prohibited.");
 929                                 return false;
 930                         }
 931                         else if (command == "CAPAB")
 932                         {
 933                                 return this->Capab(params);
 934                         }
 935                         else if ((command == "U") || (command == "S"))
 936                         {
 937                                 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
 938                                 return false;
 939                         }
 940                         else
 941                         {
 942                                 std::string error("ERROR :Invalid command in negotiation phase: ");
 943                                 error.append(command.c_str());
 944                                 this->WriteLine(error);
 945                                 return false;
 946                         }
 947                 break;
 948                 case WAIT_AUTH_2:
 949                         // Waiting for start of other side's netmerge to say they liked our
 950                         // password.
 951                         if (command == "SERVER")
 952                         {
 953                                 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
 954                                 // silently ignore.
 955                                 return true;
 956                         }
 957                         else if ((command == "U") || (command == "S"))
 958                         {
 959                                 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
 960                                 return false;
 961                         }
 962                         else if (command == "BURST")
 963                         {
 964                                 if (params.size() && Utils->EnableTimeSync)
 965                                 {
 966                                         /* If a time stamp is provided, apply synchronization */
 967                                         bool force = false;
 968                                         time_t them = atoi(params[0].c_str());
 969                                         time_t us = Instance->Time(false);
 970                                         int delta = them - us;
 971                                         if ((params.size() == 2) && (params[1] == "FORCE"))
 972                                                 force = true;
 973                                         if ((delta < -600) || (delta > 600))
 974                                         {
 975                                                 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));
 976                                                 this->WriteLine("ERROR :Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than ten minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!");
 977                                                 return false;
 978                                         }
 979
 980                                         if (force || (us > them))
 981                                         {
 982                                                 this->Instance->SetTimeDelta(them - us);
 983                                                 // Send this new timestamp to any other servers
 984                                                 Utils->DoOneToMany(Utils->TreeRoot->GetName(), "TIMESET", params);
 985                                         }
 986                                         else
 987                                         {
 988                                                 // Override the timestamp
 989                                                 this->WriteLine(":" + Utils->TreeRoot->GetName() + " TIMESET " + ConvToStr(us));
 990                                         }
 991                                 }
 992                                 this->LinkState = CONNECTED;
 993                                 Node = new TreeServer(this->Utils,this->Instance,InboundServerName,InboundDescription,Utils->TreeRoot,this);
 994                                 Utils->TreeRoot->AddChild(Node);
 995                                 params.clear();
 996                                 params.push_back(InboundServerName);
 997                                 params.push_back("*");
 998                                 params.push_back("1");
 999                                 params.push_back(":"+InboundDescription);
1000                                 Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,InboundServerName);
1001                                 this->bursting = true;
1002                                 this->DoBurst(Node);
1003                         }
1004                         else if (command == "ERROR")
1005                         {
1006                                 return this->Error(params);
1007                         }
1008                         else if (command == "CAPAB")
1009                         {
1010                                 return this->Capab(params);
1011                         }
1012
1013                 break;
1014                 case LISTENER:
1015                         this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
1016                         return false;
1017                 break;
1018                 case CONNECTING:
1019                         if (command == "SERVER")
1020                         {
1021                                 // another server we connected to, which was in WAIT_AUTH_1 state,
1022                                 // has just sent us their credentials. If we get this far, theyre
1023                                 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
1024                                 // if we're happy with this, we should send our netburst which
1025                                 // kickstarts the merge.
1026                                 return this->Outbound_Reply_Server(params);
1027                         }
1028                         else if (command == "ERROR")
1029                         {
1030                                 return this->Error(params);
1031                         }
1032                 break;
1033                 case CONNECTED:
1034                         // This is the 'authenticated' state, when all passwords
1035                         // have been exchanged and anything past this point is taken
1036                         // as gospel.
1037
1038                         if (prefix != "")
1039                         {
1040                                 std::string direction = prefix;
1041                                 userrec* t = this->Instance->FindNick(prefix);
1042                                 if (t)
1043                                 {
1044                                         direction = t->server;
1045                                 }
1046                                 TreeServer* route_back_again = Utils->BestRouteTo(direction);
1047                                 if ((!route_back_again) || (route_back_again->GetSocket() != this))
1048                                 {
1049                                         if (route_back_again)
1050                                                 Instance->Log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
1051                                         return true;
1052                                 }
1053                                 /* Fix by brain:
1054                                  * When there is activity on the socket, reset the ping counter so
1055                                  * that we're not wasting bandwidth pinging an active server.
1056                                  */
1057                                 route_back_again->SetNextPingTime(time(NULL) + 60);
1058                                 route_back_again->SetPingFlag();
1059                         }
1060
1061                         if (command == "SVSMODE")
1062                         {
1063                                 /* Services expects us to implement
1064                                  * SVSMODE. In inspircd its the same as
1065                                  * MODE anyway.
1066                                  */
1067                                 command = "MODE";
1068                         }
1069                         std::string target = "";
1070                         /* Yes, know, this is a mess. Its reasonably fast though as we're
1071                          * working with std::string here.
1072                          */
1073                         if ((command == "NICK") && (params.size() > 1))
1074                         {
1075                                 return this->IntroduceClient(prefix,params);
1076                         }
1077                         else if (command == "FJOIN")
1078                         {
1079                                 return this->ForceJoin(prefix,params);
1080                         }
1081                         else if (command == "STATS")
1082                         {
1083                                 return this->Stats(prefix, params);
1084                         }
1085                         else if (command == "MOTD")
1086                         {
1087                                 return this->Motd(prefix, params);
1088                         }
1089                         else if (command == "ADMIN")
1090                         {
1091                                 return this->Admin(prefix, params);
1092                         }
1093                         else if (command == "SERVER")
1094                         {
1095                                 return this->RemoteServer(prefix,params);
1096                         }
1097                         else if (command == "ERROR")
1098                         {
1099                                 return this->Error(params);
1100                         }
1101                         else if (command == "OPERTYPE")
1102                         {
1103                                 return this->OperType(prefix,params);
1104                         }
1105                         else if (command == "FMODE")
1106                         {
1107                                 return this->ForceMode(prefix,params);
1108                         }
1109                         else if (command == "KILL")
1110                         {
1111                                 return this->RemoteKill(prefix,params);
1112                         }
1113                         else if (command == "FTOPIC")
1114                         {
1115                                 return this->ForceTopic(prefix,params);
1116                         }
1117                         else if (command == "REHASH")
1118                         {
1119                                 return this->RemoteRehash(prefix,params);
1120                         }
1121                         else if (command == "METADATA")
1122                         {
1123                                 return this->MetaData(prefix,params);
1124                         }
1125                         else if (command == "REMSTATUS")
1126                         {
1127                                 return this->RemoveStatus(prefix,params);
1128                         }
1129                         else if (command == "PING")
1130                         {
1131                                 /*
1132                                  * We just got a ping from a server that's bursting.
1133                                  * This can't be right, so set them to not bursting, and
1134                                  * apply their lines.
1135                                  */
1136                                 if (this->bursting)
1137                                 {
1138                                         this->bursting = false;
1139                                         Instance->XLines->apply_lines(Utils->lines_to_apply);
1140                                         Utils->lines_to_apply = 0;
1141                                 }
1142                                 if (prefix == "")
1143                                 {
1144                                         prefix = this->GetName();
1145                                 }
1146                                 return this->LocalPing(prefix,params);
1147                         }
1148                         else if (command == "PONG")
1149                         {
1150                                 /*
1151                                  * We just got a pong from a server that's bursting.
1152                                  * This can't be right, so set them to not bursting, and
1153                                  * apply their lines.
1154                                  */
1155                                 if (this->bursting)
1156                                 {
1157                                         this->bursting = false;
1158                                         Instance->XLines->apply_lines(Utils->lines_to_apply);
1159                                         Utils->lines_to_apply = 0;
1160                                 }
1161                                 if (prefix == "")
1162                                 {
1163                                         prefix = this->GetName();
1164                                 }
1165                                 return this->LocalPong(prefix,params);
1166                         }
1167                         else if (command == "VERSION")
1168                         {
1169                                 return this->ServerVersion(prefix,params);
1170                         }
1171                         else if (command == "FHOST")
1172                         {
1173                                 return this->ChangeHost(prefix,params);
1174                         }
1175                         else if (command == "FNAME")
1176                         {
1177                                 return this->ChangeName(prefix,params);
1178                         }
1179                         else if (command == "ADDLINE")
1180                         {
1181                                 return this->AddLine(prefix,params);
1182                         }
1183                         else if (command == "SVSNICK")
1184                         {
1185                                 if (prefix == "")
1186                                 {
1187                                         prefix = this->GetName();
1188                                 }
1189                                 return this->ForceNick(prefix,params);
1190                         }
1191                         else if (command == "RSQUIT")
1192                         {
1193                                 return this->RemoteSquit(prefix, params);
1194                         }
1195                         else if (command == "IDLE")
1196                         {
1197                                 return this->Whois(prefix,params);
1198                         }
1199                         else if (command == "PUSH")
1200                         {
1201                                 return this->Push(prefix,params);
1202                         }
1203                         else if (command == "TIMESET")
1204                         {
1205                                 return this->HandleSetTime(prefix, params);
1206                         }
1207                         else if (command == "TIME")
1208                         {
1209                                 return this->Time(prefix,params);
1210                         }
1211                         else if ((command == "KICK") && (Utils->IsServer(prefix)))
1212                         {
1213                                 std::string sourceserv = this->myhost;
1214                                 if (params.size() == 3)
1215                                 {
1216                                         userrec* user = this->Instance->FindNick(params[1]);
1217                                         chanrec* chan = this->Instance->FindChan(params[0]);
1218                                         if (user && chan)
1219                                         {
1220                                                 if (!chan->ServerKickUser(user, params[2].c_str(), false))
1221                                                         /* Yikes, the channels gone! */
1222                                                         delete chan;
1223                                         }
1224                                 }
1225                                 if (this->InboundServerName != "")
1226                                 {
1227                                         sourceserv = this->InboundServerName;
1228                                 }
1229                                 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1230                         }
1231                         else if (command == "SVSJOIN")
1232                         {
1233                                 if (prefix == "")
1234                                 {
1235                                         prefix = this->GetName();
1236                                 }
1237                                 return this->ServiceJoin(prefix,params);
1238                         }
1239                         else if (command == "SQUIT")
1240                         {
1241                                 if (params.size() == 2)
1242                                 {
1243                                         this->Squit(Utils->FindServer(params[0]),params[1]);
1244                                 }
1245                                 return true;
1246                         }
1247                         else if (command == "OPERNOTICE")
1248                         {
1249                                 std::string sourceserv = this->myhost;
1250                                 if (this->InboundServerName != "")
1251                                         sourceserv = this->InboundServerName;
1252                                 if (params.size() >= 1)
1253                                         Instance->WriteOpers("*** From " + sourceserv + ": " + params[0]);
1254                                 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1255                         }
1256                         else if (command == "MODENOTICE")
1257                         {
1258                                 std::string sourceserv = this->myhost;
1259                                 if (this->InboundServerName != "")
1260                                         sourceserv = this->InboundServerName;
1261                                 if (params.size() >= 2)
1262                                 {
1263                                         Instance->WriteMode(params[0].c_str(), WM_AND, "*** From %s: %s", sourceserv.c_str(), params[1].c_str());
1264                                 }
1265                                 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1266                         }
1267                         else if (command == "SNONOTICE")
1268                         {
1269                                 std::string sourceserv = this->myhost;
1270                                 if (this->InboundServerName != "")
1271                                         sourceserv = this->InboundServerName;
1272                                 if (params.size() >= 2)
1273                                 {
1274                                         Instance->SNO->WriteToSnoMask(*(params[0].c_str()), "From " + sourceserv + ": "+ params[1]);
1275                                 }
1276                                 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
1277                         }
1278                         else if (command == "ENDBURST")
1279                         {
1280                                 this->bursting = false;
1281                                 Instance->XLines->apply_lines(Utils->lines_to_apply);
1282                                 Utils->lines_to_apply = 0;
1283                                 std::string sourceserv = this->myhost;
1284                                 if (this->InboundServerName != "")
1285                                 {
1286                                         sourceserv = this->InboundServerName;
1287                                 }
1288                                 this->Instance->SNO->WriteToSnoMask('l',"Received end of netburst from \2%s\2",sourceserv.c_str());
1289
1290                                 Event rmode((char*)sourceserv.c_str(), (Module*)Utils->Creator, "new_server");
1291                                 rmode.Send(Instance);
1292
1293                                 return true;
1294                         }
1295                         else
1296                         {
1297                                 // not a special inter-server command.
1298                                 // Emulate the actual user doing the command,
1299                                 // this saves us having a huge ugly parser.
1300                                 userrec* who = this->Instance->FindNick(prefix);
1301                                 std::string sourceserv = this->myhost;
1302                                 if (this->InboundServerName != "")
1303                                 {
1304                                         sourceserv = this->InboundServerName;
1305                                 }
1306                                 if ((!who) && (command == "MODE"))
1307                                 {
1308                                         if (Utils->IsServer(prefix))
1309                                         {
1310                                                 const char* modelist[127];
1311                                                 for (size_t i = 0; i < params.size(); i++)
1312                                                         modelist[i] = params[i].c_str();
1313                                                 userrec* fake = new userrec(Instance);
1314                                                 fake->SetFd(FD_MAGIC_NUMBER);
1315                                                 this->Instance->SendMode(modelist, params.size(), fake);
1316
1317                                                 delete fake;
1318                                                 /* Hot potato! pass it on! */
1319                                                 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1320                                         }
1321                                 }
1322                                 if (who)
1323                                 {
1324                                         if ((command == "NICK") && (params.size() > 0))
1325                                         {
1326                                                 /* On nick messages, check that the nick doesnt
1327                                                  * already exist here. If it does, kill their copy,
1328                                                  * and our copy.
1329                                                  */
1330                                                 userrec* x = this->Instance->FindNick(params[0]);
1331                                                 if ((x) && (x != who))
1332                                                 {
1333                                                         std::deque<std::string> p;
1334                                                         p.push_back(params[0]);
1335                                                         p.push_back("Nickname collision ("+prefix+" -> "+params[0]+")");
1336                                                         Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
1337                                                         p.clear();
1338                                                         p.push_back(prefix);
1339                                                         p.push_back("Nickname collision");
1340                                                         Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
1341                                                         userrec::QuitUser(this->Instance,x,"Nickname collision ("+prefix+" -> "+params[0]+")");
1342                                                         userrec* y = this->Instance->FindNick(prefix);
1343                                                         if (y)
1344                                                         {
1345                                                                 userrec::QuitUser(this->Instance,y,"Nickname collision");
1346                                                         }
1347                                                         return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1348                                                 }
1349                                         }
1350                                         // its a user
1351                                         target = who->server;
1352                                         const char* strparams[127];
1353                                         for (unsigned int q = 0; q < params.size(); q++)
1354                                         {
1355                                                 strparams[q] = params[q].c_str();
1356                                         }
1357                                         switch (this->Instance->CallCommandHandler(command.c_str(), strparams, params.size(), who))
1358                                         {
1359                                                 case CMD_INVALID:
1360                                                         this->WriteLine("ERROR :Unrecognised command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules");
1361                                                         return false;
1362                                                 break;
1363                                                 case CMD_FAILURE:
1364                                                         return true;
1365                                                 break;
1366                                                 default:
1367                                                         /* CMD_SUCCESS and CMD_USER_DELETED fall through here */
1368                                                 break;
1369                                         }
1370                                 }
1371                                 else
1372                                 {
1373                                         // its not a user. Its either a server, or somethings screwed up.
1374                                         if (Utils->IsServer(prefix))
1375                                                 target = this->Instance->Config->ServerName;
1376                                         else
1377                                                 return true;
1378                                 }
1379                                 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1380
1381                         }
1382                         return true;
1383                 break;
1384         }
1385         return true;
1386 }
1387
1388 std::string TreeSocket::GetName()
1389 {
1390         std::string sourceserv = this->myhost;
1391         if (this->InboundServerName != "")
1392         {
1393                 sourceserv = this->InboundServerName;
1394         }
1395         return sourceserv;
1396 }
1397
1398 void TreeSocket::OnTimeout()
1399 {
1400         if (this->LinkState == CONNECTING)
1401         {
1402                 this->Instance->SNO->WriteToSnoMask('l',"CONNECT: Connection to \002"+myhost+"\002 timed out.");
1403                 Link* MyLink = Utils->FindLink(myhost);
1404                 if (MyLink)
1405                         Utils->DoFailOver(MyLink);
1406         }
1407 }
1408
1409 void TreeSocket::OnClose()
1410 {
1411         // Connection closed.
1412         // If the connection is fully up (state CONNECTED)
1413         // then propogate a netsplit to all peers.
1414         std::string quitserver = this->myhost;
1415         if (this->InboundServerName != "")
1416         {
1417                 quitserver = this->InboundServerName;
1418         }
1419         TreeServer* s = Utils->FindServer(quitserver);
1420         if (s)
1421         {
1422                 Squit(s,"Remote host closed the connection");
1423         }
1424
1425         if (quitserver != "")
1426                 this->Instance->SNO->WriteToSnoMask('l',"Connection to '\2%s\2' failed.",quitserver.c_str());
1427 }
1428
1429 int TreeSocket::OnIncomingConnection(int newsock, char* ip)
1430 {
1431         /* To prevent anyone from attempting to flood opers/DDoS by connecting to the server port,
1432          * or discovering if this port is the server port, we don't allow connections from any
1433          * IPs for which we don't have a link block.
1434          */
1435         bool found = false;
1436
1437         found = (std::find(Utils->ValidIPs.begin(), Utils->ValidIPs.end(), ip) != Utils->ValidIPs.end());
1438         if (!found)
1439         {
1440                 for (vector<std::string>::iterator i = Utils->ValidIPs.begin(); i != Utils->ValidIPs.end(); i++)
1441                         if (irc::sockets::MatchCIDR(ip, (*i).c_str()))
1442                                 found = true;
1443
1444                 if (!found)
1445                 {
1446                         this->Instance->SNO->WriteToSnoMask('l',"Server connection from %s denied (no link blocks with that IP address)", ip);
1447                         close(newsock);
1448                         return false;
1449                 }
1450         }
1451
1452         TreeSocket* s = new TreeSocket(this->Utils, this->Instance, newsock, ip, this->Hook);
1453         s = s; /* Whinge whinge whinge, thats all GCC ever does. */
1454         return true;
1455 }