1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * Inspire is copyright (C) 2002-2005 ChatSpike-Dev.
7 * <brain@chatspike.net>
8 * <Craig@chatspike.net>
10 * Written by Craig Edwards, Craig McLure, and others.
11 * This program is free but copyrighted software; see
12 * the file COPYING for details.
14 * ---------------------------------------------------
23 #include "inspircd_config.h"
25 #include <ext/hash_map>
33 #include "helperfuncs.h"
35 #include "inspstring.h"
40 #define nspace __gnu_cxx
45 enum ServerState { LISTENER, CONNECTING, WAIT_AUTH_1, WAIT_AUTH_2, CONNECTED };
47 typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, irc::StrHashComp> user_hash;
48 typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, irc::StrHashComp> chan_hash;
50 extern user_hash clientlist;
51 extern chan_hash chanlist;
56 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> params, std::string target);
57 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> params, std::string omit);
58 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> params);
59 bool DoOneToAllButSenderRaw(std::string data,std::string omit);
64 std::vector<TreeServer*> Children;
65 std::string ServerName;
66 std::string ServerDesc;
67 std::string VersionString;
70 TreeSocket* Socket; // for directly connected servers this points at the socket object
80 UserCount = OperCount = 0;
83 TreeServer(std::string Name, std::string Desc) : ServerName(Name), ServerDesc(Desc)
87 UserCount = OperCount = 0;
90 TreeServer(std::string Name, std::string Desc, TreeServer* Above, TreeSocket* Sock) : Parent(Above), ServerName(Name), ServerDesc(Desc), Socket(Sock)
93 UserCount = OperCount = 0;
98 return this->ServerName;
101 std::string GetDesc()
103 return this->ServerDesc;
106 std::string GetVersion()
108 return this->VersionString;
113 return this->UserCount;
118 return this->OperCount;
121 TreeSocket* GetSocket()
126 TreeServer* GetParent()
131 unsigned int ChildCount()
133 return Children.size();
136 TreeServer* GetChild(unsigned int n)
138 if (n < Children.size())
148 void AddChild(TreeServer* Child)
150 Children.push_back(Child);
153 bool DelChild(TreeServer* Child)
155 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
166 // removes child nodes of this node, and of that node, etc etc
169 bool stillchildren = true;
170 while (stillchildren)
172 stillchildren = false;
173 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
175 TreeServer* s = (TreeServer*)*a;
179 stillchildren = true;
193 std::string SendPass;
194 std::string RecvPass;
197 /* $ModDesc: Povides a spanning tree server link protocol */
201 TreeServer *TreeRoot;
202 std::vector<Link> LinkBlocks;
204 TreeServer* RouteEnumerate(TreeServer* Current, std::string ServerName)
206 if (Current->GetName() == ServerName)
208 for (unsigned int q = 0; q < Current->ChildCount(); q++)
210 TreeServer* found = RouteEnumerate(Current->GetChild(q),ServerName);
219 // Returns the locally connected server we must route a
220 // message through to reach server 'ServerName'. This
221 // only applies to one-to-one and not one-to-many routing.
222 TreeServer* BestRouteTo(std::string ServerName)
224 log(DEBUG,"Finding best route to %s",ServerName.c_str());
225 // first, find the server by recursively walking the tree
226 TreeServer* Found = RouteEnumerate(TreeRoot,ServerName);
227 // did we find it? If not, they did something wrong, abort.
230 log(DEBUG,"Failed to find %s by walking tree!",ServerName.c_str());
235 // The server exists, follow its parent nodes until
236 // the parent of the current is 'TreeRoot', we know
237 // then that this is a directly-connected server.
238 while ((Found) && (Found->GetParent() != TreeRoot))
240 Found = Found->GetParent();
242 log(DEBUG,"Route to %s is via %s",ServerName.c_str(),Found->GetName().c_str());
247 bool LookForServer(TreeServer* Current, std::string ServerName)
249 if (ServerName == Current->GetName())
251 for (unsigned int q = 0; q < Current->ChildCount(); q++)
253 if (LookForServer(Current->GetChild(q),ServerName))
261 void RFindServer(TreeServer* Current, std::string ServerName)
263 if ((ServerName == Current->GetName()) && (!Found))
266 log(DEBUG,"Found server %s desc %s",Current->GetName().c_str(),Current->GetDesc().c_str());
271 for (unsigned int q = 0; q < Current->ChildCount(); q++)
274 RFindServer(Current->GetChild(q),ServerName);
280 TreeServer* FindServer(std::string ServerName)
283 RFindServer(TreeRoot,ServerName);
287 bool IsServer(std::string ServerName)
289 return LookForServer(TreeRoot,ServerName);
292 class TreeSocket : public InspSocket
295 std::string in_buffer;
296 ServerState LinkState;
297 std::string InboundServerName;
298 std::string InboundDescription;
300 int num_lost_servers;
304 TreeSocket(std::string host, int port, bool listening, unsigned long maxtime)
305 : InspSocket(host, port, listening, maxtime)
307 Srv->Log(DEBUG,"Create new listening");
309 this->LinkState = LISTENER;
312 TreeSocket(std::string host, int port, bool listening, unsigned long maxtime, std::string ServerName)
313 : InspSocket(host, port, listening, maxtime)
315 Srv->Log(DEBUG,"Create new outbound");
317 this->LinkState = CONNECTING;
320 TreeSocket(int newfd, char* ip)
321 : InspSocket(newfd, ip)
323 Srv->Log(DEBUG,"Associate new inbound");
324 this->LinkState = WAIT_AUTH_1;
327 virtual bool OnConnected()
329 if (this->LinkState == CONNECTING)
331 Srv->SendOpers("*** Connection to "+myhost+"["+this->GetIP()+"] established.");
332 // we should send our details here.
333 // if the other side is satisfied, they send theirs.
334 // we do not need to change state here.
335 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
337 if (x->Name == this->myhost)
339 // found who we're supposed to be connecting to, send the neccessary gubbins.
340 this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
345 log(DEBUG,"Outbound connection ERROR: Could not find the right link block!");
349 virtual void OnError(InspSocketError e)
353 virtual int OnDisconnect()
358 // recursively send the server tree with distances as hops
359 void SendServers(TreeServer* Current, TreeServer* s, int hops)
362 for (unsigned int q = 0; q < Current->ChildCount(); q++)
364 TreeServer* recursive_server = Current->GetChild(q);
365 if (recursive_server != s)
367 // :source.server SERVER server.name hops :Description
368 snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str());
369 this->WriteLine(command);
370 // down to next level
371 this->SendServers(recursive_server, s, hops+1);
376 void SquitServer(TreeServer* Current)
378 // recursively squit the servers attached to 'Current'
379 for (unsigned int q = 0; q < Current->ChildCount(); q++)
381 TreeServer* recursive_server = Current->GetChild(q);
382 this->SquitServer(recursive_server);
384 // Now we've whacked the kids, whack self
385 log(DEBUG,"Deleted %s",Current->GetName().c_str());
387 bool quittingpeople = true;
388 while (quittingpeople)
390 quittingpeople = false;
391 for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
393 if (!strcasecmp(u->second->server,Current->GetName().c_str()))
395 log(DEBUG,"Quitting user %s of server %s",u->second->nick,u->second->server);
396 Srv->QuitUser(u->second,Current->GetName()+" "+std::string(Srv->GetServerName()));
398 quittingpeople = true;
405 void Squit(TreeServer* Current,std::string reason)
409 std::deque<std::string> params;
410 params.push_back(Current->GetName());
411 params.push_back(":"+reason);
412 DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
413 if (Current->GetParent() == TreeRoot)
415 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split: "+reason);
419 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
421 num_lost_servers = 0;
423 SquitServer(Current);
425 Current->GetParent()->DelChild(Current);
427 WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
431 log(DEBUG,"Squit from unknown server");
435 bool ForceMode(std::string source, std::deque<std::string> params)
437 userrec* who = new userrec;
438 who->fd = FD_MAGIC_NUMBER;
439 if (params.size() < 2)
442 for (unsigned int q = 0; q < params.size(); q++)
444 modelist[q] = (char*)params[q].c_str();
446 Srv->SendMode(modelist,params.size(),who);
447 DoOneToAllButSender(source,"FMODE",params,source);
452 bool ForceJoin(std::string source, std::deque<std::string> params)
454 if (params.size() < 1)
456 for (unsigned int channelnum = 0; channelnum < params.size(); channelnum++)
458 // process one channel at a time, applying modes.
459 char* channel = (char*)params[channelnum].c_str();
460 char permissions = *channel;
477 userrec* who = Srv->FindNick(source);
481 chanrec* chan = Srv->FindChannel(channel);
482 if ((chan) && (*chan->key))
486 Srv->JoinUserToChannel(who,channel,key);
490 modelist[0] = channel;
492 modelist[2] = who->nick;
493 Srv->SendMode(modelist,3,who);
495 DoOneToAllButSender(source,"FJOIN",params,who->server);
501 bool IntroduceClient(std::string source, std::deque<std::string> params)
503 if (params.size() < 8)
505 // NICK age nick host dhost ident +modes ip :gecos
507 std::string nick = params[1];
508 std::string host = params[2];
509 std::string dhost = params[3];
510 std::string ident = params[4];
511 time_t age = atoi(params[0].c_str());
512 std::string modes = params[5];
513 if (*(modes.c_str()) == '+')
515 char* m = (char*)modes.c_str();
519 std::string ip = params[6];
520 std::string gecos = params[7];
521 char* tempnick = (char*)nick.c_str();
522 log(DEBUG,"Introduce client %s!%s@%s",tempnick,ident.c_str(),host.c_str());
524 user_hash::iterator iter;
525 iter = clientlist.find(tempnick);
526 if (iter != clientlist.end())
529 log(DEBUG,"Nick collision on %s!%s@%s",tempnick,ident.c_str(),host.c_str());
533 clientlist[tempnick] = new userrec();
534 clientlist[tempnick]->fd = FD_MAGIC_NUMBER;
535 strlcpy(clientlist[tempnick]->nick, tempnick,NICKMAX);
536 strlcpy(clientlist[tempnick]->host, host.c_str(),160);
537 strlcpy(clientlist[tempnick]->dhost, dhost.c_str(),160);
538 clientlist[tempnick]->server = (char*)FindServerNamePtr(source.c_str());
539 strlcpy(clientlist[tempnick]->ident, ident.c_str(),IDENTMAX);
540 strlcpy(clientlist[tempnick]->fullname, gecos.c_str(),MAXGECOS);
541 clientlist[tempnick]->registered = 7;
542 clientlist[tempnick]->signon = age;
543 strlcpy(clientlist[tempnick]->ip,ip.c_str(),16);
544 for (int i = 0; i < MAXCHANS; i++)
546 clientlist[tempnick]->chans[i].channel = NULL;
547 clientlist[tempnick]->chans[i].uc_modes = 0;
549 params[7] = ":" + params[7];
550 DoOneToAllButSender(source,"NICK",params,source);
554 void SendChannelModes(TreeServer* Current)
557 for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
559 snprintf(data,MAXBUF,":%s FMODE %s +%s",Srv->GetServerName().c_str(),c->second->name,chanmodes(c->second));
560 this->WriteLine(data);
561 if (*c->second->topic)
563 snprintf(data,MAXBUF,":%s FTOPIC %s %lu %s :%s",Srv->GetServerName().c_str(),c->second->name,(unsigned long)c->second->topicset,c->second->setby,c->second->topic);
564 this->WriteLine(data);
566 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
568 snprintf(data,MAXBUF,":%s FMODE %s +b %s",Srv->GetServerName().c_str(),c->second->name,b->data);
569 this->WriteLine(data);
574 // send all users and their channels
575 void SendUsers(TreeServer* Current)
578 for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
580 snprintf(data,MAXBUF,":%s NICK %lu %s %s %s %s +%s %s :%s",u->second->server,(unsigned long)u->second->age,u->second->nick,u->second->host,u->second->dhost,u->second->ident,u->second->modes,u->second->ip,u->second->fullname);
581 this->WriteLine(data);
582 if (strchr(u->second->modes,'o'))
584 this->WriteLine(":"+std::string(u->second->nick)+" OPERTYPE "+std::string(u->second->oper));
586 char* chl = chlist(u->second,u->second);
589 this->WriteLine(":"+std::string(u->second->nick)+" FJOIN "+std::string(chl));
594 void DoBurst(TreeServer* s)
596 log(DEBUG,"Beginning network burst");
597 Srv->SendOpers("*** Bursting to "+s->GetName()+".");
598 this->WriteLine("BURST");
600 this->SendServers(TreeRoot,s,1);
601 // Send users and their channels
603 // TODO: Send everything else (channel modes etc)
604 this->SendChannelModes(s);
605 this->WriteLine("ENDBURST");
608 virtual bool OnDataReady()
610 char* data = this->Read();
613 this->in_buffer += data;
614 while (in_buffer.find("\n") != std::string::npos)
616 char* line = (char*)in_buffer.c_str();
617 std::string ret = "";
618 while ((*line != '\n') && (strlen(line)))
623 if ((*line == '\n') || (*line == '\r'))
626 if (!this->ProcessLine(ret))
632 return (data != NULL);
635 int WriteLine(std::string line)
637 return this->Write(line + "\r\n");
640 bool Error(std::deque<std::string> params)
642 if (params.size() < 1)
644 std::string Errmsg = params[0];
645 std::string SName = myhost;
646 if (InboundServerName != "")
648 SName = InboundServerName;
650 Srv->SendOpers("*** ERROR from "+SName+": "+Errmsg);
651 // we will return false to cause the socket to close.
655 bool OperType(std::string prefix, std::deque<std::string> params)
657 if (params.size() != 1)
659 std::string opertype = params[0];
660 userrec* u = Srv->FindNick(prefix);
663 strlcpy(u->oper,opertype.c_str(),NICKMAX);
664 if (!strchr(u->modes,'o'))
666 strcat(u->modes,"o");
668 DoOneToAllButSender(u->server,"OPERTYPE",params,u->server);
673 bool RemoteKill(std::string prefix, std::deque<std::string> params)
675 if (params.size() != 2)
677 std::string nick = params[0];
678 std::string reason = params[1];
679 userrec* u = Srv->FindNick(prefix);
680 userrec* who = Srv->FindNick(nick);
683 std::string sourceserv = prefix;
686 sourceserv = u->server;
688 params[1] = ":" + params[1];
689 DoOneToAllButSender(prefix,"KILL",params,sourceserv);
690 Srv->QuitUser(who,reason);
695 bool RemoteServer(std::string prefix, std::deque<std::string> params)
697 if (params.size() < 4)
699 std::string servername = params[0];
700 std::string password = params[1];
701 int hops = atoi(params[2].c_str());
702 std::string description = params[3];
705 this->WriteLine("ERROR :Protocol error - Introduced remote server with incorrect hopcount!");
708 TreeServer* ParentOfThis = FindServer(prefix);
711 this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
714 TreeServer* Node = new TreeServer(servername,description,ParentOfThis,NULL);
715 ParentOfThis->AddChild(Node);
716 params[3] = ":" + params[3];
717 DoOneToAllButSender(prefix,"SERVER",params,prefix);
718 Srv->SendOpers("*** Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
722 bool Outbound_Reply_Server(std::deque<std::string> params)
724 if (params.size() < 4)
726 std::string servername = params[0];
727 std::string password = params[1];
728 int hops = atoi(params[2].c_str());
731 this->WriteLine("ERROR :Server too far away for authentication");
734 std::string description = params[3];
735 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
737 if ((x->Name == servername) && (x->RecvPass == password))
739 // Begin the sync here. this kickstarts the
740 // other side, waiting in WAIT_AUTH_2 state,
741 // into starting their burst, as it shows
743 this->LinkState = CONNECTED;
744 // we should add the details of this server now
745 // to the servers tree, as a child of the root
747 TreeServer* Node = new TreeServer(servername,description,TreeRoot,this);
748 TreeRoot->AddChild(Node);
749 params[3] = ":" + params[3];
750 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,servername);
755 this->WriteLine("ERROR :Invalid credentials");
759 bool Inbound_Server(std::deque<std::string> params)
761 if (params.size() < 4)
763 std::string servername = params[0];
764 std::string password = params[1];
765 int hops = atoi(params[2].c_str());
768 this->WriteLine("ERROR :Server too far away for authentication");
771 std::string description = params[3];
772 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
774 if ((x->Name == servername) && (x->RecvPass == password))
776 Srv->SendOpers("*** Verified incoming server connection from \002"+servername+"\002["+this->GetIP()+"] ("+description+")");
777 this->InboundServerName = servername;
778 this->InboundDescription = description;
779 // this is good. Send our details: Our server name and description and hopcount of 0,
780 // along with the sendpass from this block.
781 this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
782 // move to the next state, we are now waiting for THEM.
783 this->LinkState = WAIT_AUTH_2;
787 this->WriteLine("ERROR :Invalid credentials");
791 std::deque<std::string> Split(std::string line, bool stripcolon)
793 std::deque<std::string> n;
794 std::stringstream s(line);
795 std::string param = "";
801 if ((param != "") && (param != "\n"))
803 if ((param.c_str()[0] == ':') && (item))
805 char* str = (char*)param.c_str();
815 param = param + " " + append;
826 bool ProcessLine(std::string line)
828 char* l = (char*)line.c_str();
829 while ((strlen(l)) && (l[strlen(l)-1] == '\r') || (l[strlen(l)-1] == '\n'))
830 l[strlen(l)-1] = '\0';
834 Srv->Log(DEBUG,"inbound-line: '"+line+"'");
835 std::deque<std::string> params = this->Split(line,true);
836 std::string command = "";
837 std::string prefix = "";
838 if (((params[0].c_str())[0] == ':') && (params.size() > 1))
842 char* pref = (char*)prefix.c_str();
854 switch (this->LinkState)
859 // Waiting for SERVER command from remote server. Server initiating
860 // the connection sends the first SERVER command, listening server
861 // replies with theirs if its happy, then if the initiator is happy,
862 // it starts to send its net sync, which starts the merge, otherwise
863 // it sends an ERROR.
864 if (command == "SERVER")
866 return this->Inbound_Server(params);
868 else if (command == "ERROR")
870 return this->Error(params);
874 // Waiting for start of other side's netmerge to say they liked our
876 if (command == "SERVER")
878 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
882 else if (command == "BURST")
884 this->LinkState = CONNECTED;
885 Node = new TreeServer(InboundServerName,InboundDescription,TreeRoot,this);
886 TreeRoot->AddChild(Node);
888 params.push_back(InboundServerName);
889 params.push_back("*");
890 params.push_back("1");
891 params.push_back(":"+InboundDescription);
892 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,InboundServerName);
895 else if (command == "ERROR")
897 return this->Error(params);
902 this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
906 if (command == "SERVER")
908 // another server we connected to, which was in WAIT_AUTH_1 state,
909 // has just sent us their credentials. If we get this far, theyre
910 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
911 // if we're happy with this, we should send our netburst which
912 // kickstarts the merge.
913 return this->Outbound_Reply_Server(params);
917 // This is the 'authenticated' state, when all passwords
918 // have been exchanged and anything past this point is taken
920 std::string target = "";
921 if ((command == "NICK") && (params.size() > 1))
923 return this->IntroduceClient(prefix,params);
925 else if (command == "FJOIN")
927 return this->ForceJoin(prefix,params);
929 else if (command == "SERVER")
931 return this->RemoteServer(prefix,params);
933 else if (command == "OPERTYPE")
935 return this->OperType(prefix,params);
937 else if (command == "FMODE")
939 return this->ForceMode(prefix,params);
941 else if (command == "KILL")
943 return this->RemoteKill(prefix,params);
945 else if (command == "SQUIT")
947 if (params.size() == 2)
949 this->Squit(FindServer(params[0]),params[1]);
955 // not a special inter-server command.
956 // Emulate the actual user doing the command,
957 // this saves us having a huge ugly parser.
958 userrec* who = Srv->FindNick(prefix);
959 std::string sourceserv = this->myhost;
960 if (this->InboundServerName != "")
962 sourceserv = this->InboundServerName;
967 target = who->server;
968 char* strparams[127];
969 for (unsigned int q = 0; q < params.size(); q++)
971 strparams[q] = (char*)params[q].c_str();
973 log(DEBUG,"*** CALL COMMAND HANDLER FOR %s, SOURCE: '%s'",command.c_str(),who->nick);
974 Srv->CallCommandHandler(command, strparams, params.size(), who);
978 // its not a user. Its either a server, or somethings screwed up.
979 if (IsServer(prefix))
981 target = Srv->GetServerName();
985 log(DEBUG,"Command with unknown origin '%s'",prefix.c_str());
989 return DoOneToAllButSenderRaw(line,sourceserv);
998 virtual void OnTimeout()
1000 if (this->LinkState == CONNECTING)
1002 Srv->SendOpers("*** CONNECT: Connection to \002"+myhost+"\002 timed out.");
1006 virtual void OnClose()
1008 // Connection closed.
1009 // If the connection is fully up (state CONNECTED)
1010 // then propogate a netsplit to all peers.
1011 std::string quitserver = this->myhost;
1012 if (this->InboundServerName != "")
1014 quitserver = this->InboundServerName;
1016 TreeServer* s = FindServer(quitserver);
1019 Squit(s,"Remote host closed the connection");
1023 virtual int OnIncomingConnection(int newsock, char* ip)
1025 TreeSocket* s = new TreeSocket(newsock, ip);
1031 bool DoOneToAllButSenderRaw(std::string data,std::string omit)
1033 for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
1035 TreeServer* Route = TreeRoot->GetChild(x);
1036 if ((Route->GetSocket()) && (Route->GetName() != omit) && (BestRouteTo(omit) != Route))
1038 TreeSocket* Sock = Route->GetSocket();
1039 log(DEBUG,"Sending RAW to %s",Route->GetName().c_str());
1040 Sock->WriteLine(data);
1046 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> params, std::string omit)
1048 log(DEBUG,"ALLBUTONE: Comes from %s SHOULD NOT go back to %s",prefix.c_str(),omit.c_str());
1049 // TODO: Special stuff with privmsg and notice
1050 std::string FullLine = ":" + prefix + " " + command;
1051 for (unsigned int x = 0; x < params.size(); x++)
1053 FullLine = FullLine + " " + params[x];
1055 for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
1057 TreeServer* Route = TreeRoot->GetChild(x);
1058 // Send the line IF:
1059 // The route has a socket (its a direct connection)
1060 // The route isnt the one to be omitted
1061 // The route isnt the path to the one to be omitted
1062 if ((Route->GetSocket()) && (Route->GetName() != omit) && (BestRouteTo(omit) != Route))
1064 TreeSocket* Sock = Route->GetSocket();
1065 log(DEBUG,"Sending to %s",Route->GetName().c_str());
1066 Sock->WriteLine(FullLine);
1072 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> params)
1074 std::string FullLine = ":" + prefix + " " + command;
1075 for (unsigned int x = 0; x < params.size(); x++)
1077 FullLine = FullLine + " " + params[x];
1079 for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
1081 TreeServer* Route = TreeRoot->GetChild(x);
1082 if (Route->GetSocket())
1084 TreeSocket* Sock = Route->GetSocket();
1085 Sock->WriteLine(FullLine);
1091 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> params, std::string target)
1093 TreeServer* Route = BestRouteTo(target);
1096 std::string FullLine = ":" + prefix + " " + command;
1097 for (unsigned int x = 0; x < params.size(); x++)
1099 FullLine = FullLine + " " + params[x];
1101 if (Route->GetSocket())
1103 TreeSocket* Sock = Route->GetSocket();
1104 Sock->WriteLine(FullLine);
1110 log(DEBUG,"Could not route message with target %s: %s",target.c_str(),command.c_str());
1116 class ModuleSpanningTree : public Module
1118 std::vector<TreeSocket*> Bindings;
1123 void ReadConfiguration(bool rebind)
1127 for (int j =0; j < Conf->Enumerate("bind"); j++)
1129 std::string Type = Conf->ReadValue("bind","type",j);
1130 std::string IP = Conf->ReadValue("bind","address",j);
1131 long Port = Conf->ReadInteger("bind","port",j,true);
1132 if (Type == "servers")
1138 TreeSocket* listener = new TreeSocket(IP.c_str(),Port,true,10);
1139 if (listener->GetState() == I_LISTENING)
1141 Srv->AddSocket(listener);
1142 Bindings.push_back(listener);
1146 log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port %d",Port);
1154 for (int j =0; j < Conf->Enumerate("link"); j++)
1157 L.Name = Conf->ReadValue("link","name",j);
1158 L.IPAddr = Conf->ReadValue("link","ipaddr",j);
1159 L.Port = Conf->ReadInteger("link","port",j,true);
1160 L.SendPass = Conf->ReadValue("link","sendpass",j);
1161 L.RecvPass = Conf->ReadValue("link","recvpass",j);
1162 LinkBlocks.push_back(L);
1163 log(DEBUG,"m_spanningtree: Read server %s with host %s:%d",L.Name.c_str(),L.IPAddr.c_str(),L.Port);
1167 ModuleSpanningTree()
1170 Conf = new ConfigReader;
1173 // Create the root of the tree
1174 TreeRoot = new TreeServer(Srv->GetServerName(),Srv->GetServerDescription());
1176 ReadConfiguration(true);
1179 void ShowLinks(TreeServer* Current, userrec* user, int hops)
1181 std::string Parent = TreeRoot->GetName();
1182 if (Current->GetParent())
1184 Parent = Current->GetParent()->GetName();
1186 for (unsigned int q = 0; q < Current->ChildCount(); q++)
1188 ShowLinks(Current->GetChild(q),user,hops+1);
1190 WriteServ(user->fd,"364 %s %s %s :%d %s",user->nick,Current->GetName().c_str(),Parent.c_str(),hops,Current->GetDesc().c_str());
1193 void HandleLinks(char** parameters, int pcnt, userrec* user)
1195 ShowLinks(TreeRoot,user,0);
1196 WriteServ(user->fd,"365 %s * :End of /LINKS list.",user->nick);
1200 void HandleLusers(char** parameters, int pcnt, userrec* user)
1205 // WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS.
1207 void ShowMap(TreeServer* Current, userrec* user, int depth, char matrix[128][80])
1211 for (int t = 0; t < depth; t++)
1213 matrix[line][t] = ' ';
1215 strlcpy(&matrix[line][depth],Current->GetName().c_str(),80);
1217 for (unsigned int q = 0; q < Current->ChildCount(); q++)
1219 ShowMap(Current->GetChild(q),user,depth+2,matrix);
1224 // Ok, prepare to be confused.
1225 // After much mulling over how to approach this, it struck me that
1226 // the 'usual' way of doing a /MAP isnt the best way. Instead of
1227 // keeping track of a ton of ascii characters, and line by line
1228 // under recursion working out where to place them using multiplications
1229 // and divisons, we instead render the map onto a backplane of characters
1230 // (a character matrix), then draw the branches as a series of "L" shapes
1231 // from the nodes. This is not only friendlier on CPU it uses less stack.
1233 void HandleMap(char** parameters, int pcnt, userrec* user)
1235 // This array represents a virtual screen which we will
1236 // "scratch" draw to, as the console device of an irc
1237 // client does not provide for a proper terminal.
1238 char matrix[128][80];
1239 for (unsigned int t = 0; t < 128; t++)
1241 matrix[t][0] = '\0';
1244 // The only recursive bit is called here.
1245 ShowMap(TreeRoot,user,0,matrix);
1246 // Process each line one by one. The algorithm has a limit of
1247 // 128 servers (which is far more than a spanning tree should have
1248 // anyway, so we're ok). This limit can be raised simply by making
1249 // the character matrix deeper, 128 rows taking 10k of memory.
1250 for (int l = 1; l < line; l++)
1252 // scan across the line looking for the start of the
1253 // servername (the recursive part of the algorithm has placed
1254 // the servers at indented positions depending on what they
1256 int first_nonspace = 0;
1257 while (matrix[l][first_nonspace] == ' ')
1262 // Draw the `- (corner) section: this may be overwritten by
1263 // another L shape passing along the same vertical pane, becoming
1264 // a |- (branch) section instead.
1265 matrix[l][first_nonspace] = '-';
1266 matrix[l][first_nonspace-1] = '`';
1268 // Draw upwards until we hit the parent server, causing possibly
1269 // other corners (`-) to become branches (|-)
1270 while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`'))
1272 matrix[l2][first_nonspace-1] = '|';
1276 // dump the whole lot to the user. This is the easy bit, honest.
1277 for (int t = 0; t < line; t++)
1279 WriteServ(user->fd,"006 %s :%s",user->nick,&matrix[t][0]);
1281 WriteServ(user->fd,"007 %s :End of /MAP",user->nick);
1285 int HandleSquit(char** parameters, int pcnt, userrec* user)
1290 int HandleConnect(char** parameters, int pcnt, userrec* user)
1292 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
1294 if (Srv->MatchText(x->Name.c_str(),parameters[0]))
1296 WriteServ(user->fd,"NOTICE %s :*** CONNECT: Connecting to server: %s (%s:%d)",user->nick,x->Name.c_str(),x->IPAddr.c_str(),x->Port);
1297 TreeSocket* newsocket = new TreeSocket(x->IPAddr,x->Port,false,10,x->Name);
1298 Srv->AddSocket(newsocket);
1302 WriteServ(user->fd,"NOTICE %s :*** CONNECT: No matching server could be found in the config file.",user->nick);
1306 virtual int OnPreCommand(std::string command, char **parameters, int pcnt, userrec *user)
1308 if (command == "CONNECT")
1310 return this->HandleConnect(parameters,pcnt,user);
1312 else if (command == "SQUIT")
1314 return this->HandleSquit(parameters,pcnt,user);
1316 else if (command == "MAP")
1318 this->HandleMap(parameters,pcnt,user);
1321 else if (command == "LUSERS")
1323 this->HandleLusers(parameters,pcnt,user);
1326 else if (command == "LINKS")
1328 this->HandleLinks(parameters,pcnt,user);
1334 virtual void OnUserInvite(userrec* source,userrec* dest,chanrec* channel)
1336 if (std::string(source->server) == Srv->GetServerName())
1338 std::deque<std::string> params;
1339 params.push_back(dest->nick);
1340 params.push_back(channel->name);
1341 DoOneToMany(source->nick,"INVITE",params);
1345 virtual void OnPostLocalTopicChange(userrec* user, chanrec* chan, std::string topic)
1349 virtual void OnUserNotice(userrec* user, void* dest, int target_type, std::string text)
1351 if (target_type == TYPE_USER)
1353 userrec* d = (userrec*)dest;
1354 if ((std::string(d->server) != Srv->GetServerName()) && (std::string(user->server) == Srv->GetServerName()))
1356 std::deque<std::string> params;
1358 params.push_back(d->nick);
1359 params.push_back(":"+text);
1360 DoOneToOne(user->nick,"NOTICE",params,d->server);
1365 if (std::string(user->server) == Srv->GetServerName())
1367 chanrec *c = (chanrec*)dest;
1368 std::deque<std::string> params;
1369 params.push_back(c->name);
1370 params.push_back(":"+text);
1371 DoOneToMany(user->nick,"NOTICE",params);
1376 virtual void OnUserMessage(userrec* user, void* dest, int target_type, std::string text)
1378 if (target_type == TYPE_USER)
1380 // route private messages which are targetted at clients only to the server
1381 // which needs to receive them
1382 userrec* d = (userrec*)dest;
1383 if ((std::string(d->server) != Srv->GetServerName()) && (std::string(user->server) == Srv->GetServerName()))
1385 std::deque<std::string> params;
1387 params.push_back(d->nick);
1388 params.push_back(":"+text);
1389 DoOneToOne(user->nick,"PRIVMSG",params,d->server);
1394 if (std::string(user->server) == Srv->GetServerName())
1396 chanrec *c = (chanrec*)dest;
1397 std::deque<std::string> params;
1398 params.push_back(c->name);
1399 params.push_back(":"+text);
1400 DoOneToMany(user->nick,"PRIVMSG",params);
1405 virtual void OnUserJoin(userrec* user, chanrec* channel)
1407 // Only do this for local users
1408 if (std::string(user->server) == Srv->GetServerName())
1410 log(DEBUG,"**** User on %s JOINS %s",user->server,channel->name);
1411 std::deque<std::string> params;
1413 params.push_back(channel->name);
1416 log(DEBUG,"**** With key %s",channel->key);
1417 // if the channel has a key, force the join by emulating the key.
1418 params.push_back(channel->key);
1420 DoOneToMany(user->nick,"JOIN",params);
1424 virtual void OnUserPart(userrec* user, chanrec* channel)
1426 if (std::string(user->server) == Srv->GetServerName())
1428 log(DEBUG,"**** User on %s PARTS %s",user->server,channel->name);
1429 std::deque<std::string> params;
1431 params.push_back(channel->name);
1432 DoOneToMany(user->nick,"PART",params);
1436 virtual void OnUserConnect(userrec* user)
1438 char agestr[MAXBUF];
1439 if (std::string(user->server) == Srv->GetServerName())
1441 log(DEBUG,"**** User on %s CONNECTS: %s",user->server,user->nick);
1442 std::deque<std::string> params;
1443 snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age);
1445 params.push_back(agestr);
1446 params.push_back(user->nick);
1447 params.push_back(user->host);
1448 params.push_back(user->dhost);
1449 params.push_back(user->ident);
1450 params.push_back("+"+std::string(user->modes));
1451 params.push_back(user->ip);
1452 params.push_back(":"+std::string(user->fullname));
1453 DoOneToMany(Srv->GetServerName(),"NICK",params);
1457 virtual void OnUserQuit(userrec* user, std::string reason)
1459 if (std::string(user->server) == Srv->GetServerName())
1461 log(DEBUG,"**** User on %s QUITS: %s",user->server,user->nick);
1462 std::deque<std::string> params;
1463 params.push_back(":"+reason);
1464 DoOneToMany(user->nick,"QUIT",params);
1468 virtual void OnUserPostNick(userrec* user, std::string oldnick)
1470 if (std::string(user->server) == Srv->GetServerName())
1472 log(DEBUG,"**** User on %s changes NICK: %s",user->server,user->nick);
1473 std::deque<std::string> params;
1474 params.push_back(user->nick);
1475 DoOneToMany(oldnick,"NICK",params);
1479 virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, std::string reason)
1481 if (std::string(source->server) == Srv->GetServerName())
1483 log(DEBUG,"**** User on %s KICKs: %s %s",source->server,source->nick,user->nick);
1484 std::deque<std::string> params;
1485 params.push_back(chan->name);
1486 params.push_back(user->nick);
1487 params.push_back(":"+reason);
1488 DoOneToMany(source->nick,"KICK",params);
1492 virtual void OnRemoteKill(userrec* source, userrec* dest, std::string reason)
1494 std::deque<std::string> params;
1495 params.push_back(dest->nick);
1496 params.push_back(":"+reason);
1497 DoOneToMany(source->nick,"KILL",params);
1500 // note: the protocol does not allow direct umode +o except
1501 // via NICK with 8 params. sending OPERTYPE infers +o modechange
1503 virtual void OnOper(userrec* user, std::string opertype)
1505 if (std::string(user->server) == Srv->GetServerName())
1507 std::deque<std::string> params;
1508 params.push_back(opertype);
1509 DoOneToMany(user->nick,"OPERTYPE",params);
1513 virtual void OnMode(userrec* user, void* dest, int target_type, std::string text)
1515 log(DEBUG,"*** ONMODE TRIGGER");
1516 if (std::string(user->server) == Srv->GetServerName())
1518 log(DEBUG,"*** LOCAL");
1519 if (target_type == TYPE_USER)
1521 userrec* u = (userrec*)dest;
1522 std::deque<std::string> params;
1523 params.push_back(u->nick);
1524 params.push_back(text);
1525 DoOneToMany(user->nick,"MODE",params);
1529 chanrec* c = (chanrec*)dest;
1530 std::deque<std::string> params;
1531 params.push_back(c->name);
1532 params.push_back(text);
1533 DoOneToMany(user->nick,"MODE",params);
1538 virtual ~ModuleSpanningTree()
1543 virtual Version GetVersion()
1545 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
1550 class ModuleSpanningTreeFactory : public ModuleFactory
1553 ModuleSpanningTreeFactory()
1557 ~ModuleSpanningTreeFactory()
1561 virtual Module * CreateModule()
1563 return new ModuleSpanningTree;
1569 extern "C" void * init_module( void )
1571 return new ModuleSpanningTreeFactory;