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 class ModuleSpanningTree;
46 static ModuleSpanningTree* TreeProtocolModule;
48 extern std::vector<Module*> modules;
49 extern std::vector<ircd_module*> factory;
52 enum ServerState { LISTENER, CONNECTING, WAIT_AUTH_1, WAIT_AUTH_2, CONNECTED };
54 typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, irc::StrHashComp> user_hash;
55 typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, irc::StrHashComp> chan_hash;
57 extern user_hash clientlist;
58 extern chan_hash chanlist;
63 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> params, std::string target);
64 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> params, std::string omit);
65 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> params);
66 bool DoOneToAllButSenderRaw(std::string data,std::string omit, std::string prefix,std::string command,std::deque<std::string> params);
67 void ReadConfiguration(bool rebind);
72 std::vector<TreeServer*> Children;
73 std::string ServerName;
74 std::string ServerDesc;
75 std::string VersionString;
78 TreeSocket* Socket; // for directly connected servers this points at the socket object
88 UserCount = OperCount = 0;
91 TreeServer(std::string Name, std::string Desc) : ServerName(Name), ServerDesc(Desc)
95 UserCount = OperCount = 0;
98 TreeServer(std::string Name, std::string Desc, TreeServer* Above, TreeSocket* Sock) : Parent(Above), ServerName(Name), ServerDesc(Desc), Socket(Sock)
101 UserCount = OperCount = 0;
104 std::string GetName()
106 return this->ServerName;
109 std::string GetDesc()
111 return this->ServerDesc;
114 std::string GetVersion()
116 return this->VersionString;
121 return this->UserCount;
126 return this->OperCount;
129 TreeSocket* GetSocket()
134 TreeServer* GetParent()
139 unsigned int ChildCount()
141 return Children.size();
144 TreeServer* GetChild(unsigned int n)
146 if (n < Children.size())
156 void AddChild(TreeServer* Child)
158 Children.push_back(Child);
161 bool DelChild(TreeServer* Child)
163 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
174 // removes child nodes of this node, and of that node, etc etc
177 bool stillchildren = true;
178 while (stillchildren)
180 stillchildren = false;
181 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
183 TreeServer* s = (TreeServer*)*a;
187 stillchildren = true;
201 std::string SendPass;
202 std::string RecvPass;
205 /* $ModDesc: Povides a spanning tree server link protocol */
209 TreeServer *TreeRoot;
210 std::vector<Link> LinkBlocks;
212 TreeServer* RouteEnumerate(TreeServer* Current, std::string ServerName)
214 if (Current->GetName() == ServerName)
216 for (unsigned int q = 0; q < Current->ChildCount(); q++)
218 TreeServer* found = RouteEnumerate(Current->GetChild(q),ServerName);
227 // Returns the locally connected server we must route a
228 // message through to reach server 'ServerName'. This
229 // only applies to one-to-one and not one-to-many routing.
230 TreeServer* BestRouteTo(std::string ServerName)
232 if (ServerName.c_str() == TreeRoot->GetName())
236 // first, find the server by recursively walking the tree
237 TreeServer* Found = RouteEnumerate(TreeRoot,ServerName);
238 // did we find it? If not, they did something wrong, abort.
245 // The server exists, follow its parent nodes until
246 // the parent of the current is 'TreeRoot', we know
247 // then that this is a directly-connected server.
248 while ((Found) && (Found->GetParent() != TreeRoot))
250 Found = Found->GetParent();
256 bool LookForServer(TreeServer* Current, std::string ServerName)
258 if (ServerName == Current->GetName())
260 for (unsigned int q = 0; q < Current->ChildCount(); q++)
262 if (LookForServer(Current->GetChild(q),ServerName))
270 void RFindServer(TreeServer* Current, std::string ServerName)
272 if ((ServerName == Current->GetName()) && (!Found))
279 for (unsigned int q = 0; q < Current->ChildCount(); q++)
282 RFindServer(Current->GetChild(q),ServerName);
288 TreeServer* FindServer(std::string ServerName)
291 RFindServer(TreeRoot,ServerName);
295 bool IsServer(std::string ServerName)
297 return LookForServer(TreeRoot,ServerName);
300 class TreeSocket : public InspSocket
303 std::string in_buffer;
304 ServerState LinkState;
305 std::string InboundServerName;
306 std::string InboundDescription;
308 int num_lost_servers;
312 TreeSocket(std::string host, int port, bool listening, unsigned long maxtime)
313 : InspSocket(host, port, listening, maxtime)
316 this->LinkState = LISTENER;
319 TreeSocket(std::string host, int port, bool listening, unsigned long maxtime, std::string ServerName)
320 : InspSocket(host, port, listening, maxtime)
323 this->LinkState = CONNECTING;
326 TreeSocket(int newfd, char* ip)
327 : InspSocket(newfd, ip)
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());
353 virtual void OnError(InspSocketError e)
357 virtual int OnDisconnect()
362 // recursively send the server tree with distances as hops
363 void SendServers(TreeServer* Current, TreeServer* s, int hops)
366 for (unsigned int q = 0; q < Current->ChildCount(); q++)
368 TreeServer* recursive_server = Current->GetChild(q);
369 if (recursive_server != s)
371 // :source.server SERVER server.name hops :Description
372 snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str());
373 this->WriteLine(command);
374 // down to next level
375 this->SendServers(recursive_server, s, hops+1);
380 void SquitServer(TreeServer* Current)
382 // recursively squit the servers attached to 'Current'
383 for (unsigned int q = 0; q < Current->ChildCount(); q++)
385 TreeServer* recursive_server = Current->GetChild(q);
386 this->SquitServer(recursive_server);
388 // Now we've whacked the kids, whack self
390 bool quittingpeople = true;
391 while (quittingpeople)
393 quittingpeople = false;
394 for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
396 if (!strcasecmp(u->second->server,Current->GetName().c_str()))
398 Srv->QuitUser(u->second,Current->GetName()+" "+std::string(Srv->GetServerName()));
400 quittingpeople = true;
407 void Squit(TreeServer* Current,std::string reason)
411 std::deque<std::string> params;
412 params.push_back(Current->GetName());
413 params.push_back(":"+reason);
414 DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
415 if (Current->GetParent() == TreeRoot)
417 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split: "+reason);
421 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
423 num_lost_servers = 0;
425 SquitServer(Current);
427 Current->GetParent()->DelChild(Current);
429 WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
433 log(DEFAULT,"Squit from unknown server");
437 bool ForceMode(std::string source, std::deque<std::string> params)
439 userrec* who = new userrec;
440 who->fd = FD_MAGIC_NUMBER;
441 if (params.size() < 2)
444 for (unsigned int q = 0; q < params.size(); q++)
446 modelist[q] = (char*)params[q].c_str();
448 Srv->SendMode(modelist,params.size(),who);
449 DoOneToAllButSender(source,"FMODE",params,source);
454 bool ForceTopic(std::string source, std::deque<std::string> params)
456 // FTOPIC %s %lu %s :%s
457 if (params.size() != 4)
459 std::string channel = params[0];
460 time_t ts = atoi(params[1].c_str());
461 std::string setby = params[2];
462 std::string topic = params[3];
464 chanrec* c = Srv->FindChannel(channel);
467 if ((ts >= c->topicset) || (!*c->topic))
469 strlcpy(c->topic,topic.c_str(),MAXTOPIC);
470 strlcpy(c->setby,setby.c_str(),NICKMAX);
472 WriteChannelWithServ((char*)source.c_str(), c, "TOPIC %s :%s", c->name, c->topic);
477 // all done, send it on its way
478 params[3] = ":" + params[3];
479 DoOneToAllButSender(source,"FTOPIC",params,source);
484 bool ForceJoin(std::string source, std::deque<std::string> params)
486 if (params.size() < 3)
490 char modestring[MAXBUF];
491 char* mode_users[127];
492 mode_users[0] = first;
493 mode_users[1] = modestring;
494 strcpy(mode_users[1],"+");
495 unsigned int modectr = 2;
498 std::string channel = params[0];
499 time_t TS = atoi(params[1].c_str());
502 chanrec* chan = Srv->FindChannel(channel);
507 strlcpy(mode_users[0],channel.c_str(),MAXBUF);
509 // default is a high value, which if we dont have this
510 // channel will let the other side apply their modes.
511 time_t ourTS = time(NULL)+20;
512 chanrec* us = Srv->FindChannel(channel);
518 log(DEBUG,"FJOIN detected, our TS=%lu, their TS=%lu",ourTS,TS);
520 // do this first, so our mode reversals are correctly received by other servers
521 // if there is a TS collision.
522 DoOneToAllButSender(source,"FJOIN",params,source);
524 for (unsigned int usernum = 2; usernum < params.size(); usernum++)
526 // process one channel at a time, applying modes.
527 char* usr = (char*)params[usernum].c_str();
528 char permissions = *usr;
533 mode_users[modectr++] = usr;
534 strlcat(modestring,"o",MAXBUF);
538 mode_users[modectr++] = usr;
539 strlcat(modestring,"h",MAXBUF);
543 mode_users[modectr++] = usr;
544 strlcat(modestring,"v",MAXBUF);
547 who = Srv->FindNick(usr);
550 Srv->JoinUserToChannel(who,channel,key);
551 if (modectr >= (MAXMODES-1))
553 // theres a mode for this user. push them onto the mode queue, and flush it
554 // if there are more than MAXMODES to go.
557 log(DEBUG,"Our our channel newer than theirs, accepting their modes");
558 Srv->SendMode(mode_users,modectr,who);
562 log(DEBUG,"Their channel newer than ours, bouncing their modes");
564 std::deque<std::string> params;
565 // modes are now being UNSET...
566 *mode_users[1] = '-';
567 for (unsigned int x = 0; x < modectr; x++)
569 params.push_back(mode_users[x]);
571 // tell everyone to bounce the modes. bad modes, bad!
572 DoOneToMany(Srv->GetServerName(),"FMODE",params);
574 strcpy(mode_users[1],"+");
579 // there werent enough modes built up to flush it during FJOIN,
580 // or, there are a number left over. flush them out.
581 if ((modectr > 2) && (who))
585 log(DEBUG,"Our our channel newer than theirs, accepting their modes");
586 Srv->SendMode(mode_users,modectr,who);
590 log(DEBUG,"Their channel newer than ours, bouncing their modes");
591 std::deque<std::string> params;
592 *mode_users[1] = '-';
593 for (unsigned int x = 0; x < modectr; x++)
595 params.push_back(mode_users[x]);
597 DoOneToMany(Srv->GetServerName(),"FMODE",params);
603 bool IntroduceClient(std::string source, std::deque<std::string> params)
605 if (params.size() < 8)
607 // NICK age nick host dhost ident +modes ip :gecos
609 std::string nick = params[1];
610 std::string host = params[2];
611 std::string dhost = params[3];
612 std::string ident = params[4];
613 time_t age = atoi(params[0].c_str());
614 std::string modes = params[5];
615 if (*(modes.c_str()) == '+')
617 char* m = (char*)modes.c_str();
621 std::string ip = params[6];
622 std::string gecos = params[7];
623 char* tempnick = (char*)nick.c_str();
624 log(DEBUG,"Introduce client %s!%s@%s",tempnick,ident.c_str(),host.c_str());
626 user_hash::iterator iter;
627 iter = clientlist.find(tempnick);
628 if (iter != clientlist.end())
631 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);
632 if (iter->second->age > age)
634 // ours is older than theirs, ours stays. Ignore their NICK, send KILL.
635 this->WriteLine(":"+Srv->GetServerName()+" KILL "+tempnick+" :Nickname collision");
640 clientlist[tempnick] = new userrec();
641 clientlist[tempnick]->fd = FD_MAGIC_NUMBER;
642 strlcpy(clientlist[tempnick]->nick, tempnick,NICKMAX);
643 strlcpy(clientlist[tempnick]->host, host.c_str(),160);
644 strlcpy(clientlist[tempnick]->dhost, dhost.c_str(),160);
645 clientlist[tempnick]->server = (char*)FindServerNamePtr(source.c_str());
646 strlcpy(clientlist[tempnick]->ident, ident.c_str(),IDENTMAX);
647 strlcpy(clientlist[tempnick]->fullname, gecos.c_str(),MAXGECOS);
648 clientlist[tempnick]->registered = 7;
649 clientlist[tempnick]->signon = age;
650 strlcpy(clientlist[tempnick]->ip,ip.c_str(),16);
651 for (int i = 0; i < MAXCHANS; i++)
653 clientlist[tempnick]->chans[i].channel = NULL;
654 clientlist[tempnick]->chans[i].uc_modes = 0;
656 params[7] = ":" + params[7];
657 DoOneToAllButSender(source,"NICK",params,source);
661 void SendFJoins(TreeServer* Current, chanrec* c)
664 snprintf(list,MAXBUF,":%s FJOIN %s %lu",Srv->GetServerName().c_str(),c->name,(unsigned long)c->age);
665 std::vector<char*> *ulist = c->GetUsers();
666 for (unsigned int i = 0; i < ulist->size(); i++)
668 char* o = (*ulist)[i];
669 userrec* otheruser = (userrec*)o;
670 strlcat(list," ",MAXBUF);
671 strlcat(list,cmode(otheruser,c),MAXBUF);
672 strlcat(list,otheruser->nick,MAXBUF);
673 if (strlen(list)>(480-NICKMAX))
675 this->WriteLine(list);
676 snprintf(list,MAXBUF,":%s FJOIN %s %lu",Srv->GetServerName().c_str(),c->name,(unsigned long)c->age);
679 if (list[strlen(list)-1] != ':')
681 this->WriteLine(list);
685 void SendChannelModes(TreeServer* Current)
688 for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
690 SendFJoins(Current, c->second);
691 snprintf(data,MAXBUF,":%s FMODE %s +%s",Srv->GetServerName().c_str(),c->second->name,chanmodes(c->second));
692 this->WriteLine(data);
693 if (*c->second->topic)
695 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);
696 this->WriteLine(data);
698 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
700 snprintf(data,MAXBUF,":%s FMODE %s +b %s",Srv->GetServerName().c_str(),c->second->name,b->data);
701 this->WriteLine(data);
703 FOREACH_MOD OnSyncChannel(c->second,(Module*)TreeProtocolModule,(void*)this);
707 // send all users and their channels
708 void SendUsers(TreeServer* Current)
711 for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
713 if (u->second->registered == 7)
715 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);
716 this->WriteLine(data);
717 if (strchr(u->second->modes,'o'))
719 this->WriteLine(":"+std::string(u->second->nick)+" OPERTYPE "+std::string(u->second->oper));
721 //char* chl = chlist(u->second,u->second);
724 // this->WriteLine(":"+std::string(u->second->nick)+" FJOIN "+std::string(chl));
726 FOREACH_MOD OnSyncUser(u->second,(Module*)TreeProtocolModule,(void*)this);
731 void DoBurst(TreeServer* s)
733 Srv->SendOpers("*** Bursting to "+s->GetName()+".");
734 this->WriteLine("BURST");
736 this->SendServers(TreeRoot,s,1);
737 // Send users and their channels
739 // TODO: Send everything else (channel modes etc)
740 this->SendChannelModes(s);
741 this->WriteLine("ENDBURST");
744 virtual bool OnDataReady()
746 char* data = this->Read();
749 this->in_buffer += data;
750 while (in_buffer.find("\n") != std::string::npos)
752 char* line = (char*)in_buffer.c_str();
753 std::string ret = "";
754 while ((*line != '\n') && (strlen(line)))
759 if ((*line == '\n') || (*line == '\r'))
762 if (!this->ProcessLine(ret))
768 return (data != NULL);
771 int WriteLine(std::string line)
773 return this->Write(line + "\r\n");
776 bool Error(std::deque<std::string> params)
778 if (params.size() < 1)
780 std::string Errmsg = params[0];
781 std::string SName = myhost;
782 if (InboundServerName != "")
784 SName = InboundServerName;
786 Srv->SendOpers("*** ERROR from "+SName+": "+Errmsg);
787 // we will return false to cause the socket to close.
791 bool OperType(std::string prefix, std::deque<std::string> params)
793 if (params.size() != 1)
795 std::string opertype = params[0];
796 userrec* u = Srv->FindNick(prefix);
799 strlcpy(u->oper,opertype.c_str(),NICKMAX);
800 if (!strchr(u->modes,'o'))
802 strcat(u->modes,"o");
804 DoOneToAllButSender(u->server,"OPERTYPE",params,u->server);
809 bool RemoteRehash(std::string prefix, std::deque<std::string> params)
811 if (params.size() < 1)
813 std::string servermask = params[0];
814 if (Srv->MatchText(Srv->GetServerName(),servermask))
816 Srv->SendOpers("*** Remote rehash initiated from server \002"+prefix+"\002.");
818 ReadConfiguration(false);
820 DoOneToAllButSender(prefix,"REHASH",params,prefix);
824 bool RemoteKill(std::string prefix, std::deque<std::string> params)
826 if (params.size() != 2)
828 std::string nick = params[0];
829 std::string reason = params[1];
830 userrec* u = Srv->FindNick(prefix);
831 userrec* who = Srv->FindNick(nick);
834 std::string sourceserv = prefix;
837 sourceserv = u->server;
839 params[1] = ":" + params[1];
840 DoOneToAllButSender(prefix,"KILL",params,sourceserv);
841 Srv->QuitUser(who,reason);
846 bool RemoteServer(std::string prefix, std::deque<std::string> params)
848 if (params.size() < 4)
850 std::string servername = params[0];
851 std::string password = params[1];
852 // hopcount is not used for a remote server, we calculate this ourselves
853 std::string description = params[3];
854 TreeServer* ParentOfThis = FindServer(prefix);
857 this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
860 TreeServer* Node = new TreeServer(servername,description,ParentOfThis,NULL);
861 ParentOfThis->AddChild(Node);
862 params[3] = ":" + params[3];
863 DoOneToAllButSender(prefix,"SERVER",params,prefix);
864 Srv->SendOpers("*** Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
868 bool Outbound_Reply_Server(std::deque<std::string> params)
870 if (params.size() < 4)
872 std::string servername = params[0];
873 std::string password = params[1];
874 int hops = atoi(params[2].c_str());
877 this->WriteLine("ERROR :Server too far away for authentication");
880 std::string description = params[3];
881 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
883 if ((x->Name == servername) && (x->RecvPass == password))
885 // Begin the sync here. this kickstarts the
886 // other side, waiting in WAIT_AUTH_2 state,
887 // into starting their burst, as it shows
889 this->LinkState = CONNECTED;
890 // we should add the details of this server now
891 // to the servers tree, as a child of the root
893 TreeServer* Node = new TreeServer(servername,description,TreeRoot,this);
894 TreeRoot->AddChild(Node);
895 params[3] = ":" + params[3];
896 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,servername);
901 this->WriteLine("ERROR :Invalid credentials");
905 bool Inbound_Server(std::deque<std::string> params)
907 if (params.size() < 4)
909 std::string servername = params[0];
910 std::string password = params[1];
911 int hops = atoi(params[2].c_str());
914 this->WriteLine("ERROR :Server too far away for authentication");
917 std::string description = params[3];
918 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
920 if ((x->Name == servername) && (x->RecvPass == password))
922 Srv->SendOpers("*** Verified incoming server connection from \002"+servername+"\002["+this->GetIP()+"] ("+description+")");
923 this->InboundServerName = servername;
924 this->InboundDescription = description;
925 // this is good. Send our details: Our server name and description and hopcount of 0,
926 // along with the sendpass from this block.
927 this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
928 // move to the next state, we are now waiting for THEM.
929 this->LinkState = WAIT_AUTH_2;
933 this->WriteLine("ERROR :Invalid credentials");
937 std::deque<std::string> Split(std::string line, bool stripcolon)
939 std::deque<std::string> n;
940 if (!strchr(line.c_str(),' '))
945 std::stringstream s(line);
946 std::string param = "";
965 if ((param == ":") && (item > 0))
988 bool ProcessLine(std::string line)
990 char* l = (char*)line.c_str();
991 while ((strlen(l)) && (l[strlen(l)-1] == '\r') || (l[strlen(l)-1] == '\n'))
992 l[strlen(l)-1] = '\0';
996 Srv->Log(DEBUG,"IN: '"+line+"'");
997 std::deque<std::string> params = this->Split(line,true);
998 std::string command = "";
999 std::string prefix = "";
1000 if (((params[0].c_str())[0] == ':') && (params.size() > 1))
1003 command = params[1];
1004 char* pref = (char*)prefix.c_str();
1012 command = params[0];
1016 switch (this->LinkState)
1021 // Waiting for SERVER command from remote server. Server initiating
1022 // the connection sends the first SERVER command, listening server
1023 // replies with theirs if its happy, then if the initiator is happy,
1024 // it starts to send its net sync, which starts the merge, otherwise
1025 // it sends an ERROR.
1026 if (command == "SERVER")
1028 return this->Inbound_Server(params);
1030 else if (command == "ERROR")
1032 return this->Error(params);
1036 // Waiting for start of other side's netmerge to say they liked our
1038 if (command == "SERVER")
1040 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
1044 else if (command == "BURST")
1046 this->LinkState = CONNECTED;
1047 Node = new TreeServer(InboundServerName,InboundDescription,TreeRoot,this);
1048 TreeRoot->AddChild(Node);
1050 params.push_back(InboundServerName);
1051 params.push_back("*");
1052 params.push_back("1");
1053 params.push_back(":"+InboundDescription);
1054 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,InboundServerName);
1055 this->DoBurst(Node);
1057 else if (command == "ERROR")
1059 return this->Error(params);
1064 this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
1068 if (command == "SERVER")
1070 // another server we connected to, which was in WAIT_AUTH_1 state,
1071 // has just sent us their credentials. If we get this far, theyre
1072 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
1073 // if we're happy with this, we should send our netburst which
1074 // kickstarts the merge.
1075 return this->Outbound_Reply_Server(params);
1077 else if (command == "ERROR")
1079 return this->Error(params);
1083 // This is the 'authenticated' state, when all passwords
1084 // have been exchanged and anything past this point is taken
1086 std::string target = "";
1087 if ((command == "NICK") && (params.size() > 1))
1089 return this->IntroduceClient(prefix,params);
1091 else if (command == "FJOIN")
1093 return this->ForceJoin(prefix,params);
1095 else if (command == "SERVER")
1097 return this->RemoteServer(prefix,params);
1099 else if (command == "ERROR")
1101 return this->Error(params);
1103 else if (command == "OPERTYPE")
1105 return this->OperType(prefix,params);
1107 else if (command == "FMODE")
1109 return this->ForceMode(prefix,params);
1111 else if (command == "KILL")
1113 return this->RemoteKill(prefix,params);
1115 else if (command == "FTOPIC")
1117 return this->ForceTopic(prefix,params);
1119 else if (command == "REHASH")
1121 return this->RemoteRehash(prefix,params);
1123 else if (command == "SQUIT")
1125 if (params.size() == 2)
1127 this->Squit(FindServer(params[0]),params[1]);
1133 // not a special inter-server command.
1134 // Emulate the actual user doing the command,
1135 // this saves us having a huge ugly parser.
1136 userrec* who = Srv->FindNick(prefix);
1137 std::string sourceserv = this->myhost;
1138 if (this->InboundServerName != "")
1140 sourceserv = this->InboundServerName;
1145 target = who->server;
1146 char* strparams[127];
1147 for (unsigned int q = 0; q < params.size(); q++)
1149 strparams[q] = (char*)params[q].c_str();
1151 Srv->CallCommandHandler(command, strparams, params.size(), who);
1155 // its not a user. Its either a server, or somethings screwed up.
1156 if (IsServer(prefix))
1158 target = Srv->GetServerName();
1162 log(DEBUG,"Command with unknown origin '%s'",prefix.c_str());
1166 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1175 virtual std::string GetName()
1177 std::string sourceserv = this->myhost;
1178 if (this->InboundServerName != "")
1180 sourceserv = this->InboundServerName;
1185 virtual void OnTimeout()
1187 if (this->LinkState == CONNECTING)
1189 Srv->SendOpers("*** CONNECT: Connection to \002"+myhost+"\002 timed out.");
1193 virtual void OnClose()
1195 // Connection closed.
1196 // If the connection is fully up (state CONNECTED)
1197 // then propogate a netsplit to all peers.
1198 std::string quitserver = this->myhost;
1199 if (this->InboundServerName != "")
1201 quitserver = this->InboundServerName;
1203 TreeServer* s = FindServer(quitserver);
1206 Squit(s,"Remote host closed the connection");
1210 virtual int OnIncomingConnection(int newsock, char* ip)
1212 TreeSocket* s = new TreeSocket(newsock, ip);
1218 void AddThisServer(TreeServer* server, std::deque<TreeServer*> &list)
1220 for (unsigned int c = 0; c < list.size(); c++)
1222 if (list[c] == server)
1227 list.push_back(server);
1230 // returns a list of DIRECT servernames for a specific channel
1231 std::deque<TreeServer*> GetListOfServersForChannel(chanrec* c)
1233 std::deque<TreeServer*> list;
1234 std::vector<char*> *ulist = c->GetUsers();
1235 for (unsigned int i = 0; i < ulist->size(); i++)
1237 char* o = (*ulist)[i];
1238 userrec* otheruser = (userrec*)o;
1239 if (std::string(otheruser->server) != Srv->GetServerName())
1241 TreeServer* best = BestRouteTo(otheruser->server);
1243 AddThisServer(best,list);
1249 bool DoOneToAllButSenderRaw(std::string data,std::string omit,std::string prefix,std::string command,std::deque<std::string> params)
1251 TreeServer* omitroute = BestRouteTo(omit);
1252 if ((command == "NOTICE") || (command == "PRIVMSG"))
1254 if (params.size() >= 2)
1256 if (*(params[0].c_str()) != '#')
1258 // special routing for private messages/notices
1259 userrec* d = Srv->FindNick(params[0]);
1262 std::deque<std::string> par;
1264 par.push_back(params[0]);
1265 par.push_back(":"+params[1]);
1266 DoOneToOne(prefix,command,par,d->server);
1272 log(DEBUG,"Channel privmsg going to chan %s",params[0].c_str());
1273 chanrec* c = Srv->FindChannel(params[0]);
1276 std::deque<TreeServer*> list = GetListOfServersForChannel(c);
1277 log(DEBUG,"Got a list of %d servers",list.size());
1278 for (unsigned int i = 0; i < list.size(); i++)
1280 TreeSocket* Sock = list[i]->GetSocket();
1281 if ((Sock) && (list[i]->GetName() != omit) && (omitroute != list[i]))
1283 log(DEBUG,"Writing privmsg to server %s",list[i]->GetName().c_str());
1284 Sock->WriteLine(data);
1292 for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
1294 TreeServer* Route = TreeRoot->GetChild(x);
1295 if ((Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
1297 TreeSocket* Sock = Route->GetSocket();
1298 Sock->WriteLine(data);
1304 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> params, std::string omit)
1306 TreeServer* omitroute = BestRouteTo(omit);
1307 std::string FullLine = ":" + prefix + " " + command;
1308 for (unsigned int x = 0; x < params.size(); x++)
1310 FullLine = FullLine + " " + params[x];
1312 for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
1314 TreeServer* Route = TreeRoot->GetChild(x);
1315 // Send the line IF:
1316 // The route has a socket (its a direct connection)
1317 // The route isnt the one to be omitted
1318 // The route isnt the path to the one to be omitted
1319 if ((Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
1321 TreeSocket* Sock = Route->GetSocket();
1322 Sock->WriteLine(FullLine);
1328 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> params)
1330 std::string FullLine = ":" + prefix + " " + command;
1331 for (unsigned int x = 0; x < params.size(); x++)
1333 FullLine = FullLine + " " + params[x];
1335 for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
1337 TreeServer* Route = TreeRoot->GetChild(x);
1338 if (Route->GetSocket())
1340 TreeSocket* Sock = Route->GetSocket();
1341 Sock->WriteLine(FullLine);
1347 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> params, std::string target)
1349 TreeServer* Route = BestRouteTo(target);
1352 std::string FullLine = ":" + prefix + " " + command;
1353 for (unsigned int x = 0; x < params.size(); x++)
1355 FullLine = FullLine + " " + params[x];
1357 if (Route->GetSocket())
1359 TreeSocket* Sock = Route->GetSocket();
1360 Sock->WriteLine(FullLine);
1370 std::vector<TreeSocket*> Bindings;
1372 void ReadConfiguration(bool rebind)
1376 for (int j =0; j < Conf->Enumerate("bind"); j++)
1378 std::string Type = Conf->ReadValue("bind","type",j);
1379 std::string IP = Conf->ReadValue("bind","address",j);
1380 long Port = Conf->ReadInteger("bind","port",j,true);
1381 if (Type == "servers")
1387 TreeSocket* listener = new TreeSocket(IP.c_str(),Port,true,10);
1388 if (listener->GetState() == I_LISTENING)
1390 Srv->AddSocket(listener);
1391 Bindings.push_back(listener);
1395 log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port %d",Port);
1403 for (int j =0; j < Conf->Enumerate("link"); j++)
1406 L.Name = Conf->ReadValue("link","name",j);
1407 L.IPAddr = Conf->ReadValue("link","ipaddr",j);
1408 L.Port = Conf->ReadInteger("link","port",j,true);
1409 L.SendPass = Conf->ReadValue("link","sendpass",j);
1410 L.RecvPass = Conf->ReadValue("link","recvpass",j);
1411 LinkBlocks.push_back(L);
1412 log(DEBUG,"m_spanningtree: Read server %s with host %s:%d",L.Name.c_str(),L.IPAddr.c_str(),L.Port);
1417 class ModuleSpanningTree : public Module
1419 std::vector<TreeSocket*> Bindings;
1424 ModuleSpanningTree()
1427 Conf = new ConfigReader;
1430 // Create the root of the tree
1431 TreeRoot = new TreeServer(Srv->GetServerName(),Srv->GetServerDescription());
1433 ReadConfiguration(true);
1436 void ShowLinks(TreeServer* Current, userrec* user, int hops)
1438 std::string Parent = TreeRoot->GetName();
1439 if (Current->GetParent())
1441 Parent = Current->GetParent()->GetName();
1443 for (unsigned int q = 0; q < Current->ChildCount(); q++)
1445 ShowLinks(Current->GetChild(q),user,hops+1);
1447 WriteServ(user->fd,"364 %s %s %s :%d %s",user->nick,Current->GetName().c_str(),Parent.c_str(),hops,Current->GetDesc().c_str());
1450 void HandleLinks(char** parameters, int pcnt, userrec* user)
1452 ShowLinks(TreeRoot,user,0);
1453 WriteServ(user->fd,"365 %s * :End of /LINKS list.",user->nick);
1457 void HandleLusers(char** parameters, int pcnt, userrec* user)
1462 // WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS.
1464 void ShowMap(TreeServer* Current, userrec* user, int depth, char matrix[128][80])
1468 for (int t = 0; t < depth; t++)
1470 matrix[line][t] = ' ';
1472 strlcpy(&matrix[line][depth],Current->GetName().c_str(),80);
1474 for (unsigned int q = 0; q < Current->ChildCount(); q++)
1476 ShowMap(Current->GetChild(q),user,depth+2,matrix);
1481 // Ok, prepare to be confused.
1482 // After much mulling over how to approach this, it struck me that
1483 // the 'usual' way of doing a /MAP isnt the best way. Instead of
1484 // keeping track of a ton of ascii characters, and line by line
1485 // under recursion working out where to place them using multiplications
1486 // and divisons, we instead render the map onto a backplane of characters
1487 // (a character matrix), then draw the branches as a series of "L" shapes
1488 // from the nodes. This is not only friendlier on CPU it uses less stack.
1490 void HandleMap(char** parameters, int pcnt, userrec* user)
1492 // This array represents a virtual screen which we will
1493 // "scratch" draw to, as the console device of an irc
1494 // client does not provide for a proper terminal.
1495 char matrix[128][80];
1496 for (unsigned int t = 0; t < 128; t++)
1498 matrix[t][0] = '\0';
1501 // The only recursive bit is called here.
1502 ShowMap(TreeRoot,user,0,matrix);
1503 // Process each line one by one. The algorithm has a limit of
1504 // 128 servers (which is far more than a spanning tree should have
1505 // anyway, so we're ok). This limit can be raised simply by making
1506 // the character matrix deeper, 128 rows taking 10k of memory.
1507 for (int l = 1; l < line; l++)
1509 // scan across the line looking for the start of the
1510 // servername (the recursive part of the algorithm has placed
1511 // the servers at indented positions depending on what they
1513 int first_nonspace = 0;
1514 while (matrix[l][first_nonspace] == ' ')
1519 // Draw the `- (corner) section: this may be overwritten by
1520 // another L shape passing along the same vertical pane, becoming
1521 // a |- (branch) section instead.
1522 matrix[l][first_nonspace] = '-';
1523 matrix[l][first_nonspace-1] = '`';
1525 // Draw upwards until we hit the parent server, causing possibly
1526 // other corners (`-) to become branches (|-)
1527 while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`'))
1529 matrix[l2][first_nonspace-1] = '|';
1533 // dump the whole lot to the user. This is the easy bit, honest.
1534 for (int t = 0; t < line; t++)
1536 WriteServ(user->fd,"006 %s :%s",user->nick,&matrix[t][0]);
1538 WriteServ(user->fd,"007 %s :End of /MAP",user->nick);
1542 int HandleSquit(char** parameters, int pcnt, userrec* user)
1547 int HandleConnect(char** parameters, int pcnt, userrec* user)
1549 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
1551 if (Srv->MatchText(x->Name.c_str(),parameters[0]))
1553 WriteServ(user->fd,"NOTICE %s :*** CONNECT: Connecting to server: %s (%s:%d)",user->nick,x->Name.c_str(),x->IPAddr.c_str(),x->Port);
1554 TreeSocket* newsocket = new TreeSocket(x->IPAddr,x->Port,false,10,x->Name);
1555 Srv->AddSocket(newsocket);
1559 WriteServ(user->fd,"NOTICE %s :*** CONNECT: No matching server could be found in the config file.",user->nick);
1563 virtual int OnPreCommand(std::string command, char **parameters, int pcnt, userrec *user)
1565 if (command == "CONNECT")
1567 return this->HandleConnect(parameters,pcnt,user);
1569 else if (command == "SQUIT")
1571 return this->HandleSquit(parameters,pcnt,user);
1573 else if (command == "MAP")
1575 this->HandleMap(parameters,pcnt,user);
1578 else if (command == "LUSERS")
1580 this->HandleLusers(parameters,pcnt,user);
1583 else if (command == "LINKS")
1585 this->HandleLinks(parameters,pcnt,user);
1588 else if (Srv->IsValidModuleCommand(command, pcnt, user))
1590 // this bit of code cleverly routes all module commands
1591 // to all remote severs *automatically* so that modules
1592 // can just handle commands locally, without having
1593 // to have any special provision in place for remote
1594 // commands and linking protocols.
1595 std::deque<std::string> params;
1597 for (int j = 0; j < pcnt; j++)
1599 if (strchr(parameters[j],' '))
1601 params.push_back(":" + std::string(parameters[j]));
1605 params.push_back(std::string(parameters[j]));
1608 DoOneToMany(user->nick,command,params);
1613 virtual void OnGetServerDescription(std::string servername,std::string &description)
1615 TreeServer* s = FindServer(servername);
1618 description = s->GetDesc();
1622 virtual void OnUserInvite(userrec* source,userrec* dest,chanrec* channel)
1624 if (std::string(source->server) == Srv->GetServerName())
1626 std::deque<std::string> params;
1627 params.push_back(dest->nick);
1628 params.push_back(channel->name);
1629 DoOneToMany(source->nick,"INVITE",params);
1633 virtual void OnPostLocalTopicChange(userrec* user, chanrec* chan, std::string topic)
1635 std::deque<std::string> params;
1636 params.push_back(chan->name);
1637 params.push_back(":"+topic);
1638 DoOneToMany(user->nick,"TOPIC",params);
1641 virtual void OnUserNotice(userrec* user, void* dest, int target_type, std::string text)
1643 if (target_type == TYPE_USER)
1645 userrec* d = (userrec*)dest;
1646 if ((std::string(d->server) != Srv->GetServerName()) && (std::string(user->server) == Srv->GetServerName()))
1648 std::deque<std::string> params;
1650 params.push_back(d->nick);
1651 params.push_back(":"+text);
1652 DoOneToOne(user->nick,"NOTICE",params,d->server);
1657 if (std::string(user->server) == Srv->GetServerName())
1659 chanrec *c = (chanrec*)dest;
1660 std::deque<TreeServer*> list = GetListOfServersForChannel(c);
1661 for (unsigned int i = 0; i < list.size(); i++)
1663 TreeSocket* Sock = list[i]->GetSocket();
1665 Sock->WriteLine(":"+std::string(user->nick)+" NOTICE "+std::string(c->name)+" :"+text);
1671 virtual void OnUserMessage(userrec* user, void* dest, int target_type, std::string text)
1673 if (target_type == TYPE_USER)
1675 // route private messages which are targetted at clients only to the server
1676 // which needs to receive them
1677 userrec* d = (userrec*)dest;
1678 if ((std::string(d->server) != Srv->GetServerName()) && (std::string(user->server) == Srv->GetServerName()))
1680 std::deque<std::string> params;
1682 params.push_back(d->nick);
1683 params.push_back(":"+text);
1684 DoOneToOne(user->nick,"PRIVMSG",params,d->server);
1689 if (std::string(user->server) == Srv->GetServerName())
1691 chanrec *c = (chanrec*)dest;
1692 std::deque<TreeServer*> list = GetListOfServersForChannel(c);
1693 for (unsigned int i = 0; i < list.size(); i++)
1695 TreeSocket* Sock = list[i]->GetSocket();
1697 Sock->WriteLine(":"+std::string(user->nick)+" PRIVMSG "+std::string(c->name)+" :"+text);
1703 virtual void OnUserJoin(userrec* user, chanrec* channel)
1705 // Only do this for local users
1706 if (std::string(user->server) == Srv->GetServerName())
1708 std::deque<std::string> params;
1710 params.push_back(channel->name);
1713 // if the channel has a key, force the join by emulating the key.
1714 params.push_back(channel->key);
1716 DoOneToMany(user->nick,"JOIN",params);
1720 virtual void OnUserPart(userrec* user, chanrec* channel)
1722 if (std::string(user->server) == Srv->GetServerName())
1724 std::deque<std::string> params;
1726 params.push_back(channel->name);
1727 DoOneToMany(user->nick,"PART",params);
1731 virtual void OnUserConnect(userrec* user)
1733 char agestr[MAXBUF];
1734 if (std::string(user->server) == Srv->GetServerName())
1736 std::deque<std::string> params;
1737 snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age);
1739 params.push_back(agestr);
1740 params.push_back(user->nick);
1741 params.push_back(user->host);
1742 params.push_back(user->dhost);
1743 params.push_back(user->ident);
1744 params.push_back("+"+std::string(user->modes));
1745 params.push_back(user->ip);
1746 params.push_back(":"+std::string(user->fullname));
1747 DoOneToMany(Srv->GetServerName(),"NICK",params);
1751 virtual void OnUserQuit(userrec* user, std::string reason)
1753 if (std::string(user->server) == Srv->GetServerName())
1755 std::deque<std::string> params;
1756 params.push_back(":"+reason);
1757 DoOneToMany(user->nick,"QUIT",params);
1761 virtual void OnUserPostNick(userrec* user, std::string oldnick)
1763 if (std::string(user->server) == Srv->GetServerName())
1765 std::deque<std::string> params;
1766 params.push_back(user->nick);
1767 DoOneToMany(oldnick,"NICK",params);
1771 virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, std::string reason)
1773 if (std::string(source->server) == Srv->GetServerName())
1775 std::deque<std::string> params;
1776 params.push_back(chan->name);
1777 params.push_back(user->nick);
1778 params.push_back(":"+reason);
1779 DoOneToMany(source->nick,"KICK",params);
1783 virtual void OnRemoteKill(userrec* source, userrec* dest, std::string reason)
1785 std::deque<std::string> params;
1786 params.push_back(dest->nick);
1787 params.push_back(":"+reason);
1788 DoOneToMany(source->nick,"KILL",params);
1791 virtual void OnRehash(std::string parameter)
1793 if (parameter != "")
1795 std::deque<std::string> params;
1796 params.push_back(parameter);
1797 DoOneToMany(Srv->GetServerName(),"REHASH",params);
1799 if (Srv->MatchText(Srv->GetServerName(),parameter))
1801 Srv->SendOpers("*** Remote rehash initiated from server \002"+Srv->GetServerName()+"\002.");
1802 Srv->RehashServer();
1805 ReadConfiguration(false);
1808 // note: the protocol does not allow direct umode +o except
1809 // via NICK with 8 params. sending OPERTYPE infers +o modechange
1811 virtual void OnOper(userrec* user, std::string opertype)
1813 if (std::string(user->server) == Srv->GetServerName())
1815 std::deque<std::string> params;
1816 params.push_back(opertype);
1817 DoOneToMany(user->nick,"OPERTYPE",params);
1821 virtual void OnMode(userrec* user, void* dest, int target_type, std::string text)
1823 if (std::string(user->server) == Srv->GetServerName())
1825 if (target_type == TYPE_USER)
1827 userrec* u = (userrec*)dest;
1828 std::deque<std::string> params;
1829 params.push_back(u->nick);
1830 params.push_back(text);
1831 DoOneToMany(user->nick,"MODE",params);
1835 chanrec* c = (chanrec*)dest;
1836 std::deque<std::string> params;
1837 params.push_back(c->name);
1838 params.push_back(text);
1839 DoOneToMany(user->nick,"MODE",params);
1844 virtual void ProtoSendMode(void* opaque, int target_type, void* target, std::string modeline)
1846 TreeSocket* s = (TreeSocket*)opaque;
1849 if (target_type == TYPE_USER)
1851 userrec* u = (userrec*)target;
1852 s->WriteLine(":"+Srv->GetServerName()+" FMODE "+u->nick+" "+modeline);
1856 chanrec* c = (chanrec*)target;
1857 s->WriteLine(":"+Srv->GetServerName()+" FMODE "+c->name+" "+modeline);
1862 virtual ~ModuleSpanningTree()
1867 virtual Version GetVersion()
1869 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
1874 class ModuleSpanningTreeFactory : public ModuleFactory
1877 ModuleSpanningTreeFactory()
1881 ~ModuleSpanningTreeFactory()
1885 virtual Module * CreateModule()
1887 TreeProtocolModule = new ModuleSpanningTree;
1888 return TreeProtocolModule;
1894 extern "C" void * init_module( void )
1896 return new ModuleSpanningTreeFactory;