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 if (ServerName.c_str() == TreeRoot->GetName())
227 log(DEBUG,"Cant route to myself!!!");
230 // first, find the server by recursively walking the tree
231 TreeServer* Found = RouteEnumerate(TreeRoot,ServerName);
232 // did we find it? If not, they did something wrong, abort.
235 log(DEBUG,"Failed to find %s by walking tree!",ServerName.c_str());
240 // The server exists, follow its parent nodes until
241 // the parent of the current is 'TreeRoot', we know
242 // then that this is a directly-connected server.
243 while ((Found) && (Found->GetParent() != TreeRoot))
245 Found = Found->GetParent();
247 log(DEBUG,"Route to %s is via %s",ServerName.c_str(),Found->GetName().c_str());
252 bool LookForServer(TreeServer* Current, std::string ServerName)
254 if (ServerName == Current->GetName())
256 for (unsigned int q = 0; q < Current->ChildCount(); q++)
258 if (LookForServer(Current->GetChild(q),ServerName))
266 void RFindServer(TreeServer* Current, std::string ServerName)
268 if ((ServerName == Current->GetName()) && (!Found))
271 log(DEBUG,"Found server %s desc %s",Current->GetName().c_str(),Current->GetDesc().c_str());
276 for (unsigned int q = 0; q < Current->ChildCount(); q++)
279 RFindServer(Current->GetChild(q),ServerName);
285 TreeServer* FindServer(std::string ServerName)
288 RFindServer(TreeRoot,ServerName);
292 bool IsServer(std::string ServerName)
294 return LookForServer(TreeRoot,ServerName);
297 class TreeSocket : public InspSocket
300 std::string in_buffer;
301 ServerState LinkState;
302 std::string InboundServerName;
303 std::string InboundDescription;
305 int num_lost_servers;
309 TreeSocket(std::string host, int port, bool listening, unsigned long maxtime)
310 : InspSocket(host, port, listening, maxtime)
312 Srv->Log(DEBUG,"Create new listening");
314 this->LinkState = LISTENER;
317 TreeSocket(std::string host, int port, bool listening, unsigned long maxtime, std::string ServerName)
318 : InspSocket(host, port, listening, maxtime)
320 Srv->Log(DEBUG,"Create new outbound");
322 this->LinkState = CONNECTING;
325 TreeSocket(int newfd, char* ip)
326 : InspSocket(newfd, ip)
328 Srv->Log(DEBUG,"Associate new inbound");
329 this->LinkState = WAIT_AUTH_1;
332 virtual bool OnConnected()
334 if (this->LinkState == CONNECTING)
336 Srv->SendOpers("*** Connection to "+myhost+"["+this->GetIP()+"] established.");
337 // we should send our details here.
338 // if the other side is satisfied, they send theirs.
339 // we do not need to change state here.
340 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
342 if (x->Name == this->myhost)
344 // found who we're supposed to be connecting to, send the neccessary gubbins.
345 this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
350 log(DEBUG,"Outbound connection ERROR: Could not find the right link block!");
354 virtual void OnError(InspSocketError e)
358 virtual int OnDisconnect()
363 // recursively send the server tree with distances as hops
364 void SendServers(TreeServer* Current, TreeServer* s, int hops)
367 for (unsigned int q = 0; q < Current->ChildCount(); q++)
369 TreeServer* recursive_server = Current->GetChild(q);
370 if (recursive_server != s)
372 // :source.server SERVER server.name hops :Description
373 snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str());
374 this->WriteLine(command);
375 // down to next level
376 this->SendServers(recursive_server, s, hops+1);
381 void SquitServer(TreeServer* Current)
383 // recursively squit the servers attached to 'Current'
384 for (unsigned int q = 0; q < Current->ChildCount(); q++)
386 TreeServer* recursive_server = Current->GetChild(q);
387 this->SquitServer(recursive_server);
389 // Now we've whacked the kids, whack self
390 log(DEBUG,"Deleted %s",Current->GetName().c_str());
392 bool quittingpeople = true;
393 while (quittingpeople)
395 quittingpeople = false;
396 for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
398 if (!strcasecmp(u->second->server,Current->GetName().c_str()))
400 log(DEBUG,"Quitting user %s of server %s",u->second->nick,u->second->server);
401 Srv->QuitUser(u->second,Current->GetName()+" "+std::string(Srv->GetServerName()));
403 quittingpeople = true;
410 void Squit(TreeServer* Current,std::string reason)
414 std::deque<std::string> params;
415 params.push_back(Current->GetName());
416 params.push_back(":"+reason);
417 DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
418 if (Current->GetParent() == TreeRoot)
420 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split: "+reason);
424 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
426 num_lost_servers = 0;
428 SquitServer(Current);
430 Current->GetParent()->DelChild(Current);
432 WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
436 log(DEBUG,"Squit from unknown server");
440 bool ForceMode(std::string source, std::deque<std::string> params)
442 userrec* who = new userrec;
443 who->fd = FD_MAGIC_NUMBER;
444 if (params.size() < 2)
447 for (unsigned int q = 0; q < params.size(); q++)
449 modelist[q] = (char*)params[q].c_str();
451 Srv->SendMode(modelist,params.size(),who);
452 DoOneToAllButSender(source,"FMODE",params,source);
457 bool ForceTopic(std::string source, std::deque<std::string> params)
459 // FTOPIC %s %lu %s :%s
460 if (params.size() != 4)
462 std::string channel = params[0];
463 time_t ts = atoi(params[1].c_str());
464 std::string setby = params[2];
465 std::string topic = params[3];
467 chanrec* c = Srv->FindChannel(channel);
470 if ((ts >= c->topicset) || (!*c->topic))
472 strlcpy(c->topic,topic.c_str(),MAXTOPIC);
473 strlcpy(c->setby,setby.c_str(),NICKMAX);
475 WriteChannelWithServ((char*)source.c_str(), c, "TOPIC %s :%s", c->name, c->topic);
480 // all done, send it on its way
481 params[3] = ":" + params[3];
482 DoOneToAllButSender(source,"FTOPIC",params,source);
487 bool ForceJoin(std::string source, std::deque<std::string> params)
489 if (params.size() < 1)
491 for (unsigned int channelnum = 0; channelnum < params.size(); channelnum++)
493 // process one channel at a time, applying modes.
494 char* channel = (char*)params[channelnum].c_str();
495 char permissions = *channel;
512 userrec* who = Srv->FindNick(source);
516 chanrec* chan = Srv->FindChannel(channel);
517 if ((chan) && (*chan->key))
521 Srv->JoinUserToChannel(who,channel,key);
525 modelist[0] = channel;
527 modelist[2] = who->nick;
528 Srv->SendMode(modelist,3,who);
530 DoOneToAllButSender(source,"FJOIN",params,who->server);
536 bool IntroduceClient(std::string source, std::deque<std::string> params)
538 if (params.size() < 8)
540 // NICK age nick host dhost ident +modes ip :gecos
542 std::string nick = params[1];
543 std::string host = params[2];
544 std::string dhost = params[3];
545 std::string ident = params[4];
546 time_t age = atoi(params[0].c_str());
547 std::string modes = params[5];
548 if (*(modes.c_str()) == '+')
550 char* m = (char*)modes.c_str();
554 std::string ip = params[6];
555 std::string gecos = params[7];
556 char* tempnick = (char*)nick.c_str();
557 log(DEBUG,"Introduce client %s!%s@%s",tempnick,ident.c_str(),host.c_str());
559 user_hash::iterator iter;
560 iter = clientlist.find(tempnick);
561 if (iter != clientlist.end())
564 log(DEBUG,"Nick collision on %s!%s@%s: %lu %lu",tempnick,ident.c_str(),host.c_str(),(unsigned long)age,(unsigned long)iter->second->age);
565 this->WriteLine(":"+Srv->GetServerName()+" KILL "+tempnick+" :Nickname collision");
569 clientlist[tempnick] = new userrec();
570 clientlist[tempnick]->fd = FD_MAGIC_NUMBER;
571 strlcpy(clientlist[tempnick]->nick, tempnick,NICKMAX);
572 strlcpy(clientlist[tempnick]->host, host.c_str(),160);
573 strlcpy(clientlist[tempnick]->dhost, dhost.c_str(),160);
574 clientlist[tempnick]->server = (char*)FindServerNamePtr(source.c_str());
575 strlcpy(clientlist[tempnick]->ident, ident.c_str(),IDENTMAX);
576 strlcpy(clientlist[tempnick]->fullname, gecos.c_str(),MAXGECOS);
577 clientlist[tempnick]->registered = 7;
578 clientlist[tempnick]->signon = age;
579 strlcpy(clientlist[tempnick]->ip,ip.c_str(),16);
580 for (int i = 0; i < MAXCHANS; i++)
582 clientlist[tempnick]->chans[i].channel = NULL;
583 clientlist[tempnick]->chans[i].uc_modes = 0;
585 params[7] = ":" + params[7];
586 DoOneToAllButSender(source,"NICK",params,source);
590 void SendChannelModes(TreeServer* Current)
593 for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
595 snprintf(data,MAXBUF,":%s FMODE %s +%s",Srv->GetServerName().c_str(),c->second->name,chanmodes(c->second));
596 this->WriteLine(data);
597 if (*c->second->topic)
599 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);
600 this->WriteLine(data);
602 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
604 snprintf(data,MAXBUF,":%s FMODE %s +b %s",Srv->GetServerName().c_str(),c->second->name,b->data);
605 this->WriteLine(data);
610 // send all users and their channels
611 void SendUsers(TreeServer* Current)
614 for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
616 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);
617 this->WriteLine(data);
618 if (strchr(u->second->modes,'o'))
620 this->WriteLine(":"+std::string(u->second->nick)+" OPERTYPE "+std::string(u->second->oper));
622 char* chl = chlist(u->second,u->second);
625 this->WriteLine(":"+std::string(u->second->nick)+" FJOIN "+std::string(chl));
630 void DoBurst(TreeServer* s)
632 log(DEBUG,"Beginning network burst");
633 Srv->SendOpers("*** Bursting to "+s->GetName()+".");
634 this->WriteLine("BURST");
636 this->SendServers(TreeRoot,s,1);
637 // Send users and their channels
639 // TODO: Send everything else (channel modes etc)
640 this->SendChannelModes(s);
641 this->WriteLine("ENDBURST");
644 virtual bool OnDataReady()
646 char* data = this->Read();
649 this->in_buffer += data;
650 while (in_buffer.find("\n") != std::string::npos)
652 char* line = (char*)in_buffer.c_str();
653 std::string ret = "";
654 while ((*line != '\n') && (strlen(line)))
659 if ((*line == '\n') || (*line == '\r'))
662 if (!this->ProcessLine(ret))
668 return (data != NULL);
671 int WriteLine(std::string line)
673 return this->Write(line + "\r\n");
676 bool Error(std::deque<std::string> params)
678 if (params.size() < 1)
680 std::string Errmsg = params[0];
681 std::string SName = myhost;
682 if (InboundServerName != "")
684 SName = InboundServerName;
686 Srv->SendOpers("*** ERROR from "+SName+": "+Errmsg);
687 // we will return false to cause the socket to close.
691 bool OperType(std::string prefix, std::deque<std::string> params)
693 if (params.size() != 1)
695 std::string opertype = params[0];
696 userrec* u = Srv->FindNick(prefix);
699 strlcpy(u->oper,opertype.c_str(),NICKMAX);
700 if (!strchr(u->modes,'o'))
702 strcat(u->modes,"o");
704 DoOneToAllButSender(u->server,"OPERTYPE",params,u->server);
709 bool RemoteRehash(std::string prefix, std::deque<std::string> params)
711 if (params.size() < 1)
713 std::string servermask = params[0];
714 if (Srv->MatchText(Srv->GetServerName(),servermask))
718 DoOneToAllButSender(prefix,"REHASH",params,prefix);
722 bool RemoteKill(std::string prefix, std::deque<std::string> params)
724 if (params.size() != 2)
726 std::string nick = params[0];
727 std::string reason = params[1];
728 userrec* u = Srv->FindNick(prefix);
729 userrec* who = Srv->FindNick(nick);
732 std::string sourceserv = prefix;
735 sourceserv = u->server;
737 params[1] = ":" + params[1];
738 DoOneToAllButSender(prefix,"KILL",params,sourceserv);
739 Srv->QuitUser(who,reason);
744 bool RemoteServer(std::string prefix, std::deque<std::string> params)
746 if (params.size() < 4)
748 std::string servername = params[0];
749 std::string password = params[1];
750 int hops = atoi(params[2].c_str());
751 std::string description = params[3];
754 this->WriteLine("ERROR :Protocol error - Introduced remote server with incorrect hopcount!");
757 TreeServer* ParentOfThis = FindServer(prefix);
760 this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
763 TreeServer* Node = new TreeServer(servername,description,ParentOfThis,NULL);
764 ParentOfThis->AddChild(Node);
765 params[3] = ":" + params[3];
766 DoOneToAllButSender(prefix,"SERVER",params,prefix);
767 Srv->SendOpers("*** Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
771 bool Outbound_Reply_Server(std::deque<std::string> params)
773 if (params.size() < 4)
775 std::string servername = params[0];
776 std::string password = params[1];
777 int hops = atoi(params[2].c_str());
780 this->WriteLine("ERROR :Server too far away for authentication");
783 std::string description = params[3];
784 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
786 if ((x->Name == servername) && (x->RecvPass == password))
788 // Begin the sync here. this kickstarts the
789 // other side, waiting in WAIT_AUTH_2 state,
790 // into starting their burst, as it shows
792 this->LinkState = CONNECTED;
793 // we should add the details of this server now
794 // to the servers tree, as a child of the root
796 TreeServer* Node = new TreeServer(servername,description,TreeRoot,this);
797 TreeRoot->AddChild(Node);
798 params[3] = ":" + params[3];
799 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,servername);
804 this->WriteLine("ERROR :Invalid credentials");
808 bool Inbound_Server(std::deque<std::string> params)
810 if (params.size() < 4)
812 std::string servername = params[0];
813 std::string password = params[1];
814 int hops = atoi(params[2].c_str());
817 this->WriteLine("ERROR :Server too far away for authentication");
820 std::string description = params[3];
821 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
823 if ((x->Name == servername) && (x->RecvPass == password))
825 Srv->SendOpers("*** Verified incoming server connection from \002"+servername+"\002["+this->GetIP()+"] ("+description+")");
826 this->InboundServerName = servername;
827 this->InboundDescription = description;
828 // this is good. Send our details: Our server name and description and hopcount of 0,
829 // along with the sendpass from this block.
830 this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
831 // move to the next state, we are now waiting for THEM.
832 this->LinkState = WAIT_AUTH_2;
836 this->WriteLine("ERROR :Invalid credentials");
840 std::deque<std::string> Split(std::string line, bool stripcolon)
842 std::deque<std::string> n;
843 std::stringstream s(line);
844 std::string param = "";
850 if ((param != "") && (param != "\n"))
852 if ((param.c_str()[0] == ':') && (item))
854 char* str = (char*)param.c_str();
864 param = param + " " + append;
875 bool ProcessLine(std::string line)
877 char* l = (char*)line.c_str();
878 while ((strlen(l)) && (l[strlen(l)-1] == '\r') || (l[strlen(l)-1] == '\n'))
879 l[strlen(l)-1] = '\0';
883 Srv->Log(DEBUG,"inbound-line: '"+line+"'");
884 std::deque<std::string> params = this->Split(line,true);
885 std::string command = "";
886 std::string prefix = "";
887 if (((params[0].c_str())[0] == ':') && (params.size() > 1))
891 char* pref = (char*)prefix.c_str();
903 switch (this->LinkState)
908 // Waiting for SERVER command from remote server. Server initiating
909 // the connection sends the first SERVER command, listening server
910 // replies with theirs if its happy, then if the initiator is happy,
911 // it starts to send its net sync, which starts the merge, otherwise
912 // it sends an ERROR.
913 if (command == "SERVER")
915 return this->Inbound_Server(params);
917 else if (command == "ERROR")
919 return this->Error(params);
923 // Waiting for start of other side's netmerge to say they liked our
925 if (command == "SERVER")
927 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
931 else if (command == "BURST")
933 this->LinkState = CONNECTED;
934 Node = new TreeServer(InboundServerName,InboundDescription,TreeRoot,this);
935 TreeRoot->AddChild(Node);
937 params.push_back(InboundServerName);
938 params.push_back("*");
939 params.push_back("1");
940 params.push_back(":"+InboundDescription);
941 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,InboundServerName);
944 else if (command == "ERROR")
946 return this->Error(params);
951 this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
955 if (command == "SERVER")
957 // another server we connected to, which was in WAIT_AUTH_1 state,
958 // has just sent us their credentials. If we get this far, theyre
959 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
960 // if we're happy with this, we should send our netburst which
961 // kickstarts the merge.
962 return this->Outbound_Reply_Server(params);
966 // This is the 'authenticated' state, when all passwords
967 // have been exchanged and anything past this point is taken
969 std::string target = "";
970 if ((command == "NICK") && (params.size() > 1))
972 return this->IntroduceClient(prefix,params);
974 else if (command == "FJOIN")
976 return this->ForceJoin(prefix,params);
978 else if (command == "SERVER")
980 return this->RemoteServer(prefix,params);
982 else if (command == "OPERTYPE")
984 return this->OperType(prefix,params);
986 else if (command == "FMODE")
988 return this->ForceMode(prefix,params);
990 else if (command == "KILL")
992 return this->RemoteKill(prefix,params);
994 else if (command == "FTOPIC")
996 return this->ForceTopic(prefix,params);
998 else if (command == "REHASH")
1000 return this->RemoteRehash(prefix,params);
1002 else if (command == "SQUIT")
1004 if (params.size() == 2)
1006 this->Squit(FindServer(params[0]),params[1]);
1012 // not a special inter-server command.
1013 // Emulate the actual user doing the command,
1014 // this saves us having a huge ugly parser.
1015 userrec* who = Srv->FindNick(prefix);
1016 std::string sourceserv = this->myhost;
1017 if (this->InboundServerName != "")
1019 sourceserv = this->InboundServerName;
1024 target = who->server;
1025 char* strparams[127];
1026 for (unsigned int q = 0; q < params.size(); q++)
1028 strparams[q] = (char*)params[q].c_str();
1030 log(DEBUG,"*** CALL COMMAND HANDLER FOR %s, SOURCE: '%s'",command.c_str(),who->nick);
1031 Srv->CallCommandHandler(command, strparams, params.size(), who);
1035 // its not a user. Its either a server, or somethings screwed up.
1036 if (IsServer(prefix))
1038 target = Srv->GetServerName();
1042 log(DEBUG,"Command with unknown origin '%s'",prefix.c_str());
1046 return DoOneToAllButSenderRaw(line,sourceserv);
1055 virtual void OnTimeout()
1057 if (this->LinkState == CONNECTING)
1059 Srv->SendOpers("*** CONNECT: Connection to \002"+myhost+"\002 timed out.");
1063 virtual void OnClose()
1065 // Connection closed.
1066 // If the connection is fully up (state CONNECTED)
1067 // then propogate a netsplit to all peers.
1068 std::string quitserver = this->myhost;
1069 if (this->InboundServerName != "")
1071 quitserver = this->InboundServerName;
1073 TreeServer* s = FindServer(quitserver);
1076 Squit(s,"Remote host closed the connection");
1080 virtual int OnIncomingConnection(int newsock, char* ip)
1082 TreeSocket* s = new TreeSocket(newsock, ip);
1088 bool DoOneToAllButSenderRaw(std::string data,std::string omit)
1090 for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
1092 TreeServer* Route = TreeRoot->GetChild(x);
1093 if ((Route->GetSocket()) && (Route->GetName() != omit) && (BestRouteTo(omit) != Route))
1095 TreeSocket* Sock = Route->GetSocket();
1096 log(DEBUG,"Sending RAW to %s",Route->GetName().c_str());
1097 Sock->WriteLine(data);
1103 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> params, std::string omit)
1105 log(DEBUG,"ALLBUTONE: Comes from %s SHOULD NOT go back to %s",prefix.c_str(),omit.c_str());
1106 // TODO: Special stuff with privmsg and notice
1107 std::string FullLine = ":" + prefix + " " + command;
1108 for (unsigned int x = 0; x < params.size(); x++)
1110 FullLine = FullLine + " " + params[x];
1112 for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
1114 TreeServer* Route = TreeRoot->GetChild(x);
1115 // Send the line IF:
1116 // The route has a socket (its a direct connection)
1117 // The route isnt the one to be omitted
1118 // The route isnt the path to the one to be omitted
1119 if ((Route->GetSocket()) && (Route->GetName() != omit) && (BestRouteTo(omit) != Route))
1121 TreeSocket* Sock = Route->GetSocket();
1122 log(DEBUG,"Sending to %s",Route->GetName().c_str());
1123 Sock->WriteLine(FullLine);
1129 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> params)
1131 std::string FullLine = ":" + prefix + " " + command;
1132 for (unsigned int x = 0; x < params.size(); x++)
1134 FullLine = FullLine + " " + params[x];
1136 for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
1138 TreeServer* Route = TreeRoot->GetChild(x);
1139 if (Route->GetSocket())
1141 TreeSocket* Sock = Route->GetSocket();
1142 Sock->WriteLine(FullLine);
1148 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> params, std::string target)
1150 TreeServer* Route = BestRouteTo(target);
1153 std::string FullLine = ":" + prefix + " " + command;
1154 for (unsigned int x = 0; x < params.size(); x++)
1156 FullLine = FullLine + " " + params[x];
1158 if (Route->GetSocket())
1160 TreeSocket* Sock = Route->GetSocket();
1161 Sock->WriteLine(FullLine);
1167 log(DEBUG,"Could not route message with target %s: %s",target.c_str(),command.c_str());
1173 class ModuleSpanningTree : public Module
1175 std::vector<TreeSocket*> Bindings;
1180 void ReadConfiguration(bool rebind)
1184 for (int j =0; j < Conf->Enumerate("bind"); j++)
1186 std::string Type = Conf->ReadValue("bind","type",j);
1187 std::string IP = Conf->ReadValue("bind","address",j);
1188 long Port = Conf->ReadInteger("bind","port",j,true);
1189 if (Type == "servers")
1195 TreeSocket* listener = new TreeSocket(IP.c_str(),Port,true,10);
1196 if (listener->GetState() == I_LISTENING)
1198 Srv->AddSocket(listener);
1199 Bindings.push_back(listener);
1203 log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port %d",Port);
1211 for (int j =0; j < Conf->Enumerate("link"); j++)
1214 L.Name = Conf->ReadValue("link","name",j);
1215 L.IPAddr = Conf->ReadValue("link","ipaddr",j);
1216 L.Port = Conf->ReadInteger("link","port",j,true);
1217 L.SendPass = Conf->ReadValue("link","sendpass",j);
1218 L.RecvPass = Conf->ReadValue("link","recvpass",j);
1219 LinkBlocks.push_back(L);
1220 log(DEBUG,"m_spanningtree: Read server %s with host %s:%d",L.Name.c_str(),L.IPAddr.c_str(),L.Port);
1224 ModuleSpanningTree()
1227 Conf = new ConfigReader;
1230 // Create the root of the tree
1231 TreeRoot = new TreeServer(Srv->GetServerName(),Srv->GetServerDescription());
1233 ReadConfiguration(true);
1236 void ShowLinks(TreeServer* Current, userrec* user, int hops)
1238 std::string Parent = TreeRoot->GetName();
1239 if (Current->GetParent())
1241 Parent = Current->GetParent()->GetName();
1243 for (unsigned int q = 0; q < Current->ChildCount(); q++)
1245 ShowLinks(Current->GetChild(q),user,hops+1);
1247 WriteServ(user->fd,"364 %s %s %s :%d %s",user->nick,Current->GetName().c_str(),Parent.c_str(),hops,Current->GetDesc().c_str());
1250 void HandleLinks(char** parameters, int pcnt, userrec* user)
1252 ShowLinks(TreeRoot,user,0);
1253 WriteServ(user->fd,"365 %s * :End of /LINKS list.",user->nick);
1257 void HandleLusers(char** parameters, int pcnt, userrec* user)
1262 // WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS.
1264 void ShowMap(TreeServer* Current, userrec* user, int depth, char matrix[128][80])
1268 for (int t = 0; t < depth; t++)
1270 matrix[line][t] = ' ';
1272 strlcpy(&matrix[line][depth],Current->GetName().c_str(),80);
1274 for (unsigned int q = 0; q < Current->ChildCount(); q++)
1276 ShowMap(Current->GetChild(q),user,depth+2,matrix);
1281 // Ok, prepare to be confused.
1282 // After much mulling over how to approach this, it struck me that
1283 // the 'usual' way of doing a /MAP isnt the best way. Instead of
1284 // keeping track of a ton of ascii characters, and line by line
1285 // under recursion working out where to place them using multiplications
1286 // and divisons, we instead render the map onto a backplane of characters
1287 // (a character matrix), then draw the branches as a series of "L" shapes
1288 // from the nodes. This is not only friendlier on CPU it uses less stack.
1290 void HandleMap(char** parameters, int pcnt, userrec* user)
1292 // This array represents a virtual screen which we will
1293 // "scratch" draw to, as the console device of an irc
1294 // client does not provide for a proper terminal.
1295 char matrix[128][80];
1296 for (unsigned int t = 0; t < 128; t++)
1298 matrix[t][0] = '\0';
1301 // The only recursive bit is called here.
1302 ShowMap(TreeRoot,user,0,matrix);
1303 // Process each line one by one. The algorithm has a limit of
1304 // 128 servers (which is far more than a spanning tree should have
1305 // anyway, so we're ok). This limit can be raised simply by making
1306 // the character matrix deeper, 128 rows taking 10k of memory.
1307 for (int l = 1; l < line; l++)
1309 // scan across the line looking for the start of the
1310 // servername (the recursive part of the algorithm has placed
1311 // the servers at indented positions depending on what they
1313 int first_nonspace = 0;
1314 while (matrix[l][first_nonspace] == ' ')
1319 // Draw the `- (corner) section: this may be overwritten by
1320 // another L shape passing along the same vertical pane, becoming
1321 // a |- (branch) section instead.
1322 matrix[l][first_nonspace] = '-';
1323 matrix[l][first_nonspace-1] = '`';
1325 // Draw upwards until we hit the parent server, causing possibly
1326 // other corners (`-) to become branches (|-)
1327 while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`'))
1329 matrix[l2][first_nonspace-1] = '|';
1333 // dump the whole lot to the user. This is the easy bit, honest.
1334 for (int t = 0; t < line; t++)
1336 WriteServ(user->fd,"006 %s :%s",user->nick,&matrix[t][0]);
1338 WriteServ(user->fd,"007 %s :End of /MAP",user->nick);
1342 int HandleSquit(char** parameters, int pcnt, userrec* user)
1347 int HandleConnect(char** parameters, int pcnt, userrec* user)
1349 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
1351 if (Srv->MatchText(x->Name.c_str(),parameters[0]))
1353 WriteServ(user->fd,"NOTICE %s :*** CONNECT: Connecting to server: %s (%s:%d)",user->nick,x->Name.c_str(),x->IPAddr.c_str(),x->Port);
1354 TreeSocket* newsocket = new TreeSocket(x->IPAddr,x->Port,false,10,x->Name);
1355 Srv->AddSocket(newsocket);
1359 WriteServ(user->fd,"NOTICE %s :*** CONNECT: No matching server could be found in the config file.",user->nick);
1363 virtual int OnPreCommand(std::string command, char **parameters, int pcnt, userrec *user)
1365 if (command == "CONNECT")
1367 return this->HandleConnect(parameters,pcnt,user);
1369 else if (command == "SQUIT")
1371 return this->HandleSquit(parameters,pcnt,user);
1373 else if (command == "MAP")
1375 this->HandleMap(parameters,pcnt,user);
1378 else if (command == "LUSERS")
1380 this->HandleLusers(parameters,pcnt,user);
1383 else if (command == "LINKS")
1385 this->HandleLinks(parameters,pcnt,user);
1391 virtual void OnGetServerDescription(std::string servername,std::string &description)
1393 TreeServer* s = FindServer(servername);
1396 description = s->GetDesc();
1400 virtual void OnUserInvite(userrec* source,userrec* dest,chanrec* channel)
1402 if (std::string(source->server) == Srv->GetServerName())
1404 std::deque<std::string> params;
1405 params.push_back(dest->nick);
1406 params.push_back(channel->name);
1407 DoOneToMany(source->nick,"INVITE",params);
1411 virtual void OnPostLocalTopicChange(userrec* user, chanrec* chan, std::string topic)
1413 std::deque<std::string> params;
1414 params.push_back(chan->name);
1415 params.push_back(":"+topic);
1416 DoOneToMany(user->nick,"TOPIC",params);
1419 virtual void OnUserNotice(userrec* user, void* dest, int target_type, std::string text)
1421 if (target_type == TYPE_USER)
1423 userrec* d = (userrec*)dest;
1424 if ((std::string(d->server) != Srv->GetServerName()) && (std::string(user->server) == Srv->GetServerName()))
1426 std::deque<std::string> params;
1428 params.push_back(d->nick);
1429 params.push_back(":"+text);
1430 DoOneToOne(user->nick,"NOTICE",params,d->server);
1435 if (std::string(user->server) == Srv->GetServerName())
1437 chanrec *c = (chanrec*)dest;
1438 std::deque<std::string> params;
1439 params.push_back(c->name);
1440 params.push_back(":"+text);
1441 DoOneToMany(user->nick,"NOTICE",params);
1446 virtual void OnUserMessage(userrec* user, void* dest, int target_type, std::string text)
1448 if (target_type == TYPE_USER)
1450 // route private messages which are targetted at clients only to the server
1451 // which needs to receive them
1452 userrec* d = (userrec*)dest;
1453 if ((std::string(d->server) != Srv->GetServerName()) && (std::string(user->server) == Srv->GetServerName()))
1455 std::deque<std::string> params;
1457 params.push_back(d->nick);
1458 params.push_back(":"+text);
1459 DoOneToOne(user->nick,"PRIVMSG",params,d->server);
1464 if (std::string(user->server) == Srv->GetServerName())
1466 chanrec *c = (chanrec*)dest;
1467 std::deque<std::string> params;
1468 params.push_back(c->name);
1469 params.push_back(":"+text);
1470 DoOneToMany(user->nick,"PRIVMSG",params);
1475 virtual void OnUserJoin(userrec* user, chanrec* channel)
1477 // Only do this for local users
1478 if (std::string(user->server) == Srv->GetServerName())
1480 log(DEBUG,"**** User on %s JOINS %s",user->server,channel->name);
1481 std::deque<std::string> params;
1483 params.push_back(channel->name);
1486 log(DEBUG,"**** With key %s",channel->key);
1487 // if the channel has a key, force the join by emulating the key.
1488 params.push_back(channel->key);
1490 DoOneToMany(user->nick,"JOIN",params);
1494 virtual void OnUserPart(userrec* user, chanrec* channel)
1496 if (std::string(user->server) == Srv->GetServerName())
1498 log(DEBUG,"**** User on %s PARTS %s",user->server,channel->name);
1499 std::deque<std::string> params;
1501 params.push_back(channel->name);
1502 DoOneToMany(user->nick,"PART",params);
1506 virtual void OnUserConnect(userrec* user)
1508 char agestr[MAXBUF];
1509 if (std::string(user->server) == Srv->GetServerName())
1511 log(DEBUG,"**** User on %s CONNECTS: %s",user->server,user->nick);
1512 std::deque<std::string> params;
1513 snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age);
1515 params.push_back(agestr);
1516 params.push_back(user->nick);
1517 params.push_back(user->host);
1518 params.push_back(user->dhost);
1519 params.push_back(user->ident);
1520 params.push_back("+"+std::string(user->modes));
1521 params.push_back(user->ip);
1522 params.push_back(":"+std::string(user->fullname));
1523 DoOneToMany(Srv->GetServerName(),"NICK",params);
1527 virtual void OnUserQuit(userrec* user, std::string reason)
1529 if (std::string(user->server) == Srv->GetServerName())
1531 log(DEBUG,"**** User on %s QUITS: %s",user->server,user->nick);
1532 std::deque<std::string> params;
1533 params.push_back(":"+reason);
1534 DoOneToMany(user->nick,"QUIT",params);
1538 virtual void OnUserPostNick(userrec* user, std::string oldnick)
1540 if (std::string(user->server) == Srv->GetServerName())
1542 log(DEBUG,"**** User on %s changes NICK: %s",user->server,user->nick);
1543 std::deque<std::string> params;
1544 params.push_back(user->nick);
1545 DoOneToMany(oldnick,"NICK",params);
1549 virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, std::string reason)
1551 if (std::string(source->server) == Srv->GetServerName())
1553 log(DEBUG,"**** User on %s KICKs: %s %s",source->server,source->nick,user->nick);
1554 std::deque<std::string> params;
1555 params.push_back(chan->name);
1556 params.push_back(user->nick);
1557 params.push_back(":"+reason);
1558 DoOneToMany(source->nick,"KICK",params);
1562 virtual void OnRemoteKill(userrec* source, userrec* dest, std::string reason)
1564 std::deque<std::string> params;
1565 params.push_back(dest->nick);
1566 params.push_back(":"+reason);
1567 DoOneToMany(source->nick,"KILL",params);
1570 virtual void OnRehash(std::string parameter)
1572 if (parameter != "")
1574 std::deque<std::string> params;
1575 params.push_back(parameter);
1576 DoOneToMany(Srv->GetServerName(),"REHASH",params);
1578 if (Srv->MatchText(Srv->GetServerName(),parameter))
1580 Srv->RehashServer();
1585 // note: the protocol does not allow direct umode +o except
1586 // via NICK with 8 params. sending OPERTYPE infers +o modechange
1588 virtual void OnOper(userrec* user, std::string opertype)
1590 if (std::string(user->server) == Srv->GetServerName())
1592 std::deque<std::string> params;
1593 params.push_back(opertype);
1594 DoOneToMany(user->nick,"OPERTYPE",params);
1598 virtual void OnMode(userrec* user, void* dest, int target_type, std::string text)
1600 log(DEBUG,"*** ONMODE TRIGGER");
1601 if (std::string(user->server) == Srv->GetServerName())
1603 log(DEBUG,"*** LOCAL");
1604 if (target_type == TYPE_USER)
1606 userrec* u = (userrec*)dest;
1607 std::deque<std::string> params;
1608 params.push_back(u->nick);
1609 params.push_back(text);
1610 DoOneToMany(user->nick,"MODE",params);
1614 chanrec* c = (chanrec*)dest;
1615 std::deque<std::string> params;
1616 params.push_back(c->name);
1617 params.push_back(text);
1618 DoOneToMany(user->nick,"MODE",params);
1623 virtual ~ModuleSpanningTree()
1628 virtual Version GetVersion()
1630 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
1635 class ModuleSpanningTreeFactory : public ModuleFactory
1638 ModuleSpanningTreeFactory()
1642 ~ModuleSpanningTreeFactory()
1646 virtual Module * CreateModule()
1648 return new ModuleSpanningTree;
1654 extern "C" void * init_module( void )
1656 return new ModuleSpanningTreeFactory;