1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd is copyright (C) 2002-2006 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 * ---------------------------------------------------
17 /* $ModDesc: Povides a spanning tree server link protocol */
25 #include "inspircd_config.h"
27 #include <ext/hash_map>
36 #include "helperfuncs.h"
38 #include "inspstring.h"
43 #include "cull_list.h"
47 #define nspace __gnu_cxx
53 * The server list in InspIRCd is maintained as two structures
54 * which hold the data in different ways. Most of the time, we
55 * want to very quicky obtain three pieces of information:
57 * (1) The information on a server
58 * (2) The information on the server we must send data through
59 * to actually REACH the server we're after
60 * (3) Potentially, the child/parent objects of this server
62 * The InspIRCd spanning protocol provides easy access to these
63 * by storing the data firstly in a recursive structure, where
64 * each item references its parent item, and a dynamic list
65 * of child items, and another structure which stores the items
66 * hashed, linearly. This means that if we want to find a server
67 * by name quickly, we can look it up in the hash, avoiding
68 * any O(n) lookups. If however, during a split or sync, we want
69 * to apply an operation to a server, and any of its child objects
70 * we can resort to recursion to walk the tree structure.
73 class ModuleSpanningTree;
74 static ModuleSpanningTree* TreeProtocolModule;
76 extern ServerConfig* Config;
78 extern std::vector<Module*> modules;
79 extern std::vector<ircd_module*> factory;
82 /* Any socket can have one of five states at any one time.
83 * The LISTENER state indicates a socket which is listening
84 * for connections. It cannot receive data itself, only incoming
86 * The CONNECTING state indicates an outbound socket which is
87 * waiting to be writeable.
88 * The WAIT_AUTH_1 state indicates the socket is outbound and
89 * has successfully connected, but has not yet sent and received
91 * The WAIT_AUTH_2 state indicates that the socket is inbound
92 * (allocated by a LISTENER) but has not yet sent and received
94 * The CONNECTED state represents a fully authorized, fully
97 enum ServerState { LISTENER, CONNECTING, WAIT_AUTH_1, WAIT_AUTH_2, CONNECTED };
99 /* We need to import these from the core for use in netbursts */
100 extern user_hash clientlist;
101 extern chan_hash chanlist;
103 /* Foward declarations */
107 /* This variable represents the root of the server tree
108 * (for all intents and purposes, it's us)
110 TreeServer *TreeRoot;
114 /* This hash_map holds the hash equivalent of the server
115 * tree, used for rapid linear lookups.
117 typedef nspace::hash_map<std::string, TreeServer*> server_hash;
118 server_hash serverlist;
120 /* More forward declarations */
121 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string target);
122 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string omit);
123 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> ¶ms);
124 bool DoOneToAllButSenderRaw(std::string data, std::string omit, std::string prefix, std::string command, std::deque<std::string> ¶ms);
125 void ReadConfiguration(bool rebind);
127 /* Imported from xline.cpp for use during netburst */
128 extern std::vector<KLine> klines;
129 extern std::vector<GLine> glines;
130 extern std::vector<ZLine> zlines;
131 extern std::vector<QLine> qlines;
132 extern std::vector<ELine> elines;
133 extern std::vector<KLine> pklines;
134 extern std::vector<GLine> pglines;
135 extern std::vector<ZLine> pzlines;
136 extern std::vector<QLine> pqlines;
137 extern std::vector<ELine> pelines;
139 /* Each server in the tree is represented by one class of
140 * type TreeServer. A locally connected TreeServer can
141 * have a class of type TreeSocket associated with it, for
142 * remote servers, the TreeSocket entry will be NULL.
143 * Each server also maintains a pointer to its parent
144 * (NULL if this server is ours, at the top of the tree)
145 * and a pointer to its "Route" (see the comments in the
146 * constructors below), and also a dynamic list of pointers
147 * to its children which can be iterated recursively
148 * if required. Creating or deleting objects of type
149 * TreeServer automatically maintains the hash_map of
150 * TreeServer items, deleting and inserting them as they
151 * are created and destroyed.
156 TreeServer* Parent; /* Parent entry */
157 TreeServer* Route; /* Route entry */
158 std::vector<TreeServer*> Children; /* List of child objects */
159 std::string ServerName; /* Server's name */
160 std::string ServerDesc; /* Server's description */
161 std::string VersionString; /* Version string or empty string */
162 int UserCount; /* Not used in this version */
163 int OperCount; /* Not used in this version */
164 TreeSocket* Socket; /* For directly connected servers this points at the socket object */
165 time_t NextPing; /* After this time, the server should be PINGed*/
166 bool LastPingWasGood; /* True if the server responded to the last PING with a PONG */
170 /* We don't use this constructor. Its a dummy, and won't cause any insertion
171 * of the TreeServer into the hash_map. See below for the two we DO use.
179 UserCount = OperCount = 0;
180 VersionString = Srv->GetVersion();
183 /* We use this constructor only to create the 'root' item, TreeRoot, which
184 * represents our own server. Therefore, it has no route, no parent, and
185 * no socket associated with it. Its version string is our own local version.
187 TreeServer(std::string Name, std::string Desc) : ServerName(Name), ServerDesc(Desc)
191 UserCount = OperCount = 0;
192 VersionString = Srv->GetVersion();
194 Socket = NULL; /* Fix by brain */
198 /* When we create a new server, we call this constructor to initialize it.
199 * This constructor initializes the server's Route and Parent, and sets up
200 * its ping counters so that it will be pinged one minute from now.
202 TreeServer(std::string Name, std::string Desc, TreeServer* Above, TreeSocket* Sock) : Parent(Above), ServerName(Name), ServerDesc(Desc), Socket(Sock)
205 UserCount = OperCount = 0;
206 this->SetNextPingTime(time(NULL) + 120);
209 /* find the 'route' for this server (e.g. the one directly connected
210 * to the local server, which we can use to reach it)
212 * In the following example, consider we have just added a TreeServer
213 * class for server G on our network, of which we are server A.
214 * To route traffic to G (marked with a *) we must send the data to
215 * B (marked with a +) so this algorithm initializes the 'Route'
216 * value to point at whichever server traffic must be routed through
217 * to get here. If we were to try this algorithm with server B,
218 * the Route pointer would point at its own object ('this').
228 * We only run this algorithm when a server is created, as
229 * the routes remain constant while ever the server exists, and
230 * do not need to be re-calculated.
234 if (Route == TreeRoot)
240 while (this->Route->GetParent() != TreeRoot)
242 this->Route = Route->GetParent();
246 /* Because recursive code is slow and takes a lot of resources,
247 * we store two representations of the server tree. The first
248 * is a recursive structure where each server references its
249 * children and its parent, which is used for netbursts and
250 * netsplits to dump the whole dataset to the other server,
251 * and the second is used for very fast lookups when routing
252 * messages and is instead a hash_map, where each item can
253 * be referenced by its server name. The AddHashEntry()
254 * call below automatically inserts each TreeServer class
255 * into the hash_map as it is created. There is a similar
256 * maintainance call in the destructor to tidy up deleted
260 this->AddHashEntry();
263 /* This method is used to add the structure to the
264 * hash_map for linear searches. It is only called
265 * by the constructors.
269 server_hash::iterator iter;
270 iter = serverlist.find(this->ServerName);
271 if (iter == serverlist.end())
272 serverlist[this->ServerName] = this;
275 /* This method removes the reference to this object
276 * from the hash_map which is used for linear searches.
277 * It is only called by the default destructor.
281 server_hash::iterator iter;
282 iter = serverlist.find(this->ServerName);
283 if (iter != serverlist.end())
284 serverlist.erase(iter);
287 /* These accessors etc should be pretty self-
291 TreeServer* GetRoute()
296 std::string GetName()
301 std::string GetDesc()
306 std::string GetVersion()
308 return VersionString;
311 void SetNextPingTime(time_t t)
314 LastPingWasGood = false;
317 time_t NextPingTime()
322 bool AnsweredLastPing()
324 return LastPingWasGood;
329 LastPingWasGood = true;
352 TreeSocket* GetSocket()
357 TreeServer* GetParent()
362 void SetVersion(std::string Version)
364 VersionString = Version;
367 unsigned int ChildCount()
369 return Children.size();
372 TreeServer* GetChild(unsigned int n)
374 if (n < Children.size())
376 /* Make sure they cant request
377 * an out-of-range object. After
378 * all we know what these programmer
379 * types are like *grin*.
389 void AddChild(TreeServer* Child)
391 Children.push_back(Child);
394 bool DelChild(TreeServer* Child)
396 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
407 /* Removes child nodes of this node, and of that node, etc etc.
408 * This is used during netsplits to automatically tidy up the
409 * server tree. It is slow, we don't use it for much else.
413 bool stillchildren = true;
414 while (stillchildren)
416 stillchildren = false;
417 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
419 TreeServer* s = (TreeServer*)*a;
423 stillchildren = true;
432 /* We'd better tidy up after ourselves, eh? */
433 this->DelHashEntry();
437 /* The Link class might as well be a struct,
438 * but this is C++ and we don't believe in structs (!).
439 * It holds the entire information of one <link>
440 * tag from the main config file. We maintain a list
441 * of them, and populate the list on rehash/load.
450 std::string SendPass;
451 std::string RecvPass;
452 unsigned long AutoConnect;
453 time_t NextConnectTime;
454 std::string EncryptionKey;
455 bool HiddenFromStats;
458 /* The usual stuff for inspircd modules,
459 * plus the vector of Link classes which we
460 * use to store the <link> tags from the config
464 std::vector<Link> LinkBlocks;
466 /* Yay for fast searches!
467 * This is hundreds of times faster than recursion
468 * or even scanning a linked list, especially when
469 * there are more than a few servers to deal with.
472 TreeServer* FindServer(std::string ServerName)
474 server_hash::iterator iter;
475 iter = serverlist.find(ServerName);
476 if (iter != serverlist.end())
486 /* Returns the locally connected server we must route a
487 * message through to reach server 'ServerName'. This
488 * only applies to one-to-one and not one-to-many routing.
489 * See the comments for the constructor of TreeServer
492 TreeServer* BestRouteTo(std::string ServerName)
494 if (ServerName.c_str() == TreeRoot->GetName())
496 TreeServer* Found = FindServer(ServerName);
499 return Found->GetRoute();
507 /* Find the first server matching a given glob mask.
508 * Theres no find-using-glob method of hash_map [awwww :-(]
509 * so instead, we iterate over the list using an iterator
510 * and match each one until we get a hit. Yes its slow,
513 TreeServer* FindServerMask(std::string ServerName)
515 for (server_hash::iterator i = serverlist.begin(); i != serverlist.end(); i++)
517 if (Srv->MatchText(i->first,ServerName))
523 /* A convenient wrapper that returns true if a server exists */
524 bool IsServer(std::string ServerName)
526 return (FindServer(ServerName) != NULL);
529 /* Every SERVER connection inbound or outbound is represented by
530 * an object of type TreeSocket.
531 * TreeSockets, being inherited from InspSocket, can be tied into
532 * the core socket engine, and we cn therefore receive activity events
533 * for them, just like activex objects on speed. (yes really, that
534 * is a technical term!) Each of these which relates to a locally
535 * connected server is assocated with it, by hooking it onto a
536 * TreeSocket class using its constructor. In this way, we can
537 * maintain a list of servers, some of which are directly connected,
538 * some of which are not.
541 class TreeSocket : public InspSocket
544 std::string in_buffer;
545 ServerState LinkState;
546 std::string InboundServerName;
547 std::string InboundDescription;
549 int num_lost_servers;
551 bool LastPingWasGood;
555 unsigned int keylength;
559 /* Because most of the I/O gubbins are encapsulated within
560 * InspSocket, we just call the superclass constructor for
561 * most of the action, and append a few of our own values
564 TreeSocket(std::string host, int port, bool listening, unsigned long maxtime)
565 : InspSocket(host, port, listening, maxtime)
568 this->LinkState = LISTENER;
570 this->ctx_out = NULL;
573 TreeSocket(std::string host, int port, bool listening, unsigned long maxtime, std::string ServerName)
574 : InspSocket(host, port, listening, maxtime)
577 this->LinkState = CONNECTING;
579 this->ctx_out = NULL;
582 /* When a listening socket gives us a new file descriptor,
583 * we must associate it with a socket without creating a new
584 * connection. This constructor is used for this purpose.
586 TreeSocket(int newfd, char* ip)
587 : InspSocket(newfd, ip)
589 this->LinkState = WAIT_AUTH_1;
591 this->ctx_out = NULL;
592 this->SendCapabilities();
603 void InitAES(std::string key,std::string SName)
610 log(DEBUG,"Initialized AES key %s",key.c_str());
611 // key must be 16, 24, 32 etc bytes (multiple of 8)
612 keylength = key.length();
613 if (!(keylength == 16 || keylength == 24 || keylength == 32))
615 WriteOpers("*** \2ERROR\2: Key length for encryptionkey is not 16, 24 or 32 bytes in length!");
616 log(DEBUG,"Key length not 16, 24 or 32 characters!");
620 WriteOpers("*** \2AES\2: Initialized %d bit encryption to server %s",keylength*8,SName.c_str());
621 ctx_in->MakeKey(key.c_str(), "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
622 \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", keylength, keylength);
623 ctx_out->MakeKey(key.c_str(), "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
624 \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", keylength, keylength);
628 /* When an outbound connection finishes connecting, we receive
629 * this event, and must send our SERVER string to the other
630 * side. If the other side is happy, as outlined in the server
631 * to server docs on the inspircd.org site, the other side
632 * will then send back its own server string.
634 virtual bool OnConnected()
636 if (this->LinkState == CONNECTING)
638 /* we do not need to change state here. */
639 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
641 if (x->Name == this->myhost)
643 Srv->SendOpers("*** Connection to \2"+myhost+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] established.");
644 this->SendCapabilities();
645 if (x->EncryptionKey != "")
647 if (!(x->EncryptionKey.length() == 16 || x->EncryptionKey.length() == 24 || x->EncryptionKey.length() == 32))
649 WriteOpers("\2WARNING\2: Your encryption key is NOT 16, 24 or 32 characters in length, encryption will \2NOT\2 be enabled.");
653 this->WriteLine("AES "+Srv->GetServerName());
654 this->InitAES(x->EncryptionKey,x->Name);
657 /* found who we're supposed to be connecting to, send the neccessary gubbins. */
658 this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
663 /* There is a (remote) chance that between the /CONNECT and the connection
664 * being accepted, some muppet has removed the <link> block and rehashed.
665 * If that happens the connection hangs here until it's closed. Unlikely
666 * and rather harmless.
668 Srv->SendOpers("*** Connection to \2"+myhost+"\2 lost link tag(!)");
672 virtual void OnError(InspSocketError e)
674 /* We don't handle this method, because all our
675 * dirty work is done in OnClose() (see below)
676 * which is still called on error conditions too.
680 virtual int OnDisconnect()
682 /* For the same reason as above, we don't
683 * handle OnDisconnect()
688 /* Recursively send the server tree with distances as hops.
689 * This is used during network burst to inform the other server
690 * (and any of ITS servers too) of what servers we know about.
691 * If at any point any of these servers already exist on the other
692 * end, our connection may be terminated. The hopcounts given
693 * by this function are relative, this doesn't matter so long as
694 * they are all >1, as all the remote servers re-calculate them
695 * to be relative too, with themselves as hop 0.
697 void SendServers(TreeServer* Current, TreeServer* s, int hops)
700 for (unsigned int q = 0; q < Current->ChildCount(); q++)
702 TreeServer* recursive_server = Current->GetChild(q);
703 if (recursive_server != s)
705 snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str());
706 this->WriteLine(command);
707 this->WriteLine(":"+recursive_server->GetName()+" VERSION :"+recursive_server->GetVersion());
708 /* down to next level */
709 this->SendServers(recursive_server, s, hops+1);
714 std::string MyCapabilities()
716 ServerConfig* Config = Srv->GetConfig();
717 std::vector<std::string> modlist;
718 std::string capabilities = "";
720 for (int i = 0; i <= MODCOUNT; i++)
722 if ((modules[i]->GetVersion().Flags & VF_STATIC) || (modules[i]->GetVersion().Flags & VF_COMMON))
723 modlist.push_back(Config->module_names[i]);
725 sort(modlist.begin(),modlist.end());
726 for (unsigned int i = 0; i < modlist.size(); i++)
729 capabilities = capabilities + ",";
730 capabilities = capabilities + modlist[i];
735 void SendCapabilities()
737 this->WriteLine("CAPAB "+MyCapabilities());
740 bool Capab(std::deque<std::string> params)
742 if (params.size() != 1)
744 this->WriteLine("ERROR :Invalid number of parameters for CAPAB");
747 if (params[0] != this->MyCapabilities())
749 std::string quitserver = this->myhost;
750 if (this->InboundServerName != "")
752 quitserver = this->InboundServerName;
754 WriteOpers("*** \2ERROR\2: Server '%s' does not have the same set of modules loaded, cannot link!",quitserver.c_str());
755 WriteOpers("*** Our networked module set is: '%s'",this->MyCapabilities().c_str());
756 WriteOpers("*** Other server's networked module set is: '%s'",params[0].c_str());
757 WriteOpers("*** These lists must match exactly on both servers. Please correct these errors, and try again.");
758 this->WriteLine("ERROR :CAPAB mismatch; My capabilities: '"+this->MyCapabilities()+"'");
764 /* This function forces this server to quit, removing this server
765 * and any users on it (and servers and users below that, etc etc).
766 * It's very slow and pretty clunky, but luckily unless your network
767 * is having a REAL bad hair day, this function shouldnt be called
768 * too many times a month ;-)
770 void SquitServer(TreeServer* Current, CullList* Goners)
772 /* recursively squit the servers attached to 'Current'.
773 * We're going backwards so we don't remove users
774 * while we still need them ;)
776 for (unsigned int q = 0; q < Current->ChildCount(); q++)
778 TreeServer* recursive_server = Current->GetChild(q);
779 this->SquitServer(recursive_server,Goners);
781 /* Now we've whacked the kids, whack self */
783 for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
785 if (!strcasecmp(u->second->server,Current->GetName().c_str()))
787 std::string qreason = Current->GetName()+" "+std::string(Srv->GetServerName());
788 Goners->AddItem(u->second,qreason);
794 /* This is a wrapper function for SquitServer above, which
795 * does some validation first and passes on the SQUIT to all
796 * other remaining servers.
798 void Squit(TreeServer* Current,std::string reason)
800 if ((Current) && (Current != TreeRoot))
802 std::deque<std::string> params;
803 params.push_back(Current->GetName());
804 params.push_back(":"+reason);
805 DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
806 if (Current->GetParent() == TreeRoot)
808 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split: "+reason);
812 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
814 num_lost_servers = 0;
816 CullList* Goners = new CullList();
817 SquitServer(Current, Goners);
820 Current->GetParent()->DelChild(Current);
823 WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
827 log(DEFAULT,"Squit from unknown server");
832 bool ForceMode(std::string source, std::deque<std::string> params)
834 userrec* who = new userrec;
835 who->fd = FD_MAGIC_NUMBER;
836 if (params.size() < 2)
839 for (unsigned int q = 0; q < params.size(); q++)
841 modelist[q] = (char*)params[q].c_str();
843 Srv->SendMode(modelist,params.size(),who);
844 DoOneToAllButSender(source,"FMODE",params,source);
850 bool ForceTopic(std::string source, std::deque<std::string> params)
852 if (params.size() != 4)
854 std::string channel = params[0];
855 time_t ts = atoi(params[1].c_str());
856 std::string setby = params[2];
857 std::string topic = params[3];
858 std::string nsource = source;
860 chanrec* c = Srv->FindChannel(channel);
863 if ((ts >= c->topicset) || (!*c->topic))
865 std::string oldtopic = c->topic;
866 strlcpy(c->topic,topic.c_str(),MAXTOPIC);
867 strlcpy(c->setby,setby.c_str(),NICKMAX);
869 /* if the topic text is the same as the current topic,
870 * dont bother to send the TOPIC command out, just silently
871 * update the set time and set nick.
873 if (oldtopic != topic)
875 userrec* user = Srv->FindNick(source);
878 WriteChannelWithServ((char*)source.c_str(), c, "TOPIC %s :%s", c->name, c->topic);
882 WriteChannel(c, user, "TOPIC %s :%s", c->name, c->topic);
883 nsource = user->server;
890 /* all done, send it on its way */
891 params[3] = ":" + params[3];
892 DoOneToAllButSender(source,"FTOPIC",params,nsource);
897 /* FJOIN, similar to unreal SJOIN */
898 bool ForceJoin(std::string source, std::deque<std::string> params)
900 if (params.size() < 3)
904 char modestring[MAXBUF];
905 char* mode_users[127];
906 mode_users[0] = first;
907 mode_users[1] = modestring;
908 strcpy(mode_users[1],"+");
909 unsigned int modectr = 2;
912 std::string channel = params[0];
913 time_t TS = atoi(params[1].c_str());
916 chanrec* chan = Srv->FindChannel(channel);
921 strlcpy(mode_users[0],channel.c_str(),MAXBUF);
923 /* default is a high value, which if we dont have this
924 * channel will let the other side apply their modes.
926 time_t ourTS = time(NULL)+600;
927 chanrec* us = Srv->FindChannel(channel);
933 log(DEBUG,"FJOIN detected, our TS=%lu, their TS=%lu",ourTS,TS);
935 /* do this first, so our mode reversals are correctly received by other servers
936 * if there is a TS collision.
938 DoOneToAllButSender(source,"FJOIN",params,source);
940 for (unsigned int usernum = 2; usernum < params.size(); usernum++)
942 /* process one channel at a time, applying modes. */
943 char* usr = (char*)params[usernum].c_str();
944 /* Safety check just to make sure someones not sent us an FJOIN full of spaces
945 * (is this even possible?) */
948 char permissions = *usr;
953 mode_users[modectr++] = usr;
954 strlcat(modestring,"o",MAXBUF);
958 mode_users[modectr++] = usr;
959 strlcat(modestring,"h",MAXBUF);
963 mode_users[modectr++] = usr;
964 strlcat(modestring,"v",MAXBUF);
967 who = Srv->FindNick(usr);
970 Srv->JoinUserToChannel(who,channel,key);
971 if (modectr >= (MAXMODES-1))
973 /* theres a mode for this user. push them onto the mode queue, and flush it
974 * if there are more than MAXMODES to go.
976 if ((ourTS >= TS) || (Srv->IsUlined(who->server)))
978 /* We also always let u-lined clients win, no matter what the TS value */
979 log(DEBUG,"Our our channel newer than theirs, accepting their modes");
980 Srv->SendMode(mode_users,modectr,who);
984 log(DEBUG,"Their channel newer than ours, bouncing their modes");
986 std::deque<std::string> params;
987 /* modes are now being UNSET... */
988 *mode_users[1] = '-';
989 for (unsigned int x = 0; x < modectr; x++)
991 params.push_back(mode_users[x]);
993 // tell everyone to bounce the modes. bad modes, bad!
994 DoOneToMany(Srv->GetServerName(),"FMODE",params);
996 strcpy(mode_users[1],"+");
1002 /* there werent enough modes built up to flush it during FJOIN,
1003 * or, there are a number left over. flush them out.
1005 if ((modectr > 2) && (who))
1009 log(DEBUG,"Our our channel newer than theirs, accepting their modes");
1010 Srv->SendMode(mode_users,modectr,who);
1014 log(DEBUG,"Their channel newer than ours, bouncing their modes");
1015 std::deque<std::string> params;
1016 *mode_users[1] = '-';
1017 for (unsigned int x = 0; x < modectr; x++)
1019 params.push_back(mode_users[x]);
1021 DoOneToMany(Srv->GetServerName(),"FMODE",params);
1028 bool IntroduceClient(std::string source, std::deque<std::string> params)
1030 if (params.size() < 8)
1032 // NICK age nick host dhost ident +modes ip :gecos
1034 std::string nick = params[1];
1035 std::string host = params[2];
1036 std::string dhost = params[3];
1037 std::string ident = params[4];
1038 time_t age = atoi(params[0].c_str());
1039 std::string modes = params[5];
1040 while (*(modes.c_str()) == '+')
1042 char* m = (char*)modes.c_str();
1046 std::string ip = params[6];
1047 std::string gecos = params[7];
1048 char* tempnick = (char*)nick.c_str();
1049 log(DEBUG,"Introduce client %s!%s@%s",tempnick,ident.c_str(),host.c_str());
1051 user_hash::iterator iter;
1052 iter = clientlist.find(tempnick);
1053 if (iter != clientlist.end())
1056 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);
1057 this->WriteLine(":"+Srv->GetServerName()+" KILL "+tempnick+" :Nickname collision");
1061 clientlist[tempnick] = new userrec();
1062 clientlist[tempnick]->fd = FD_MAGIC_NUMBER;
1063 strlcpy(clientlist[tempnick]->nick, tempnick,NICKMAX);
1064 strlcpy(clientlist[tempnick]->host, host.c_str(),160);
1065 strlcpy(clientlist[tempnick]->dhost, dhost.c_str(),160);
1066 clientlist[tempnick]->server = (char*)FindServerNamePtr(source.c_str());
1067 strlcpy(clientlist[tempnick]->ident, ident.c_str(),IDENTMAX);
1068 strlcpy(clientlist[tempnick]->fullname, gecos.c_str(),MAXGECOS);
1069 clientlist[tempnick]->registered = 7;
1070 clientlist[tempnick]->signon = age;
1071 strlcpy(clientlist[tempnick]->modes, modes.c_str(),53);
1072 strlcpy(clientlist[tempnick]->ip,ip.c_str(),16);
1077 for (int i = 0; i < MAXCHANS; i++)
1078 clientlist[tempnick]->chans.push_back(a);
1080 if (!this->bursting)
1082 WriteOpers("*** Client connecting at %s: %s!%s@%s [%s]",clientlist[tempnick]->server,clientlist[tempnick]->nick,clientlist[tempnick]->ident,clientlist[tempnick]->host,clientlist[tempnick]->ip);
1084 params[7] = ":" + params[7];
1085 DoOneToAllButSender(source,"NICK",params,source);
1087 // Increment the Source Servers User Count..
1088 TreeServer* SourceServer = FindServer(source);
1090 SourceServer->AddUserCount();
1096 /* Send one or more FJOINs for a channel of users.
1097 * If the length of a single line is more than 480-NICKMAX
1098 * in length, it is split over multiple lines.
1100 void SendFJoins(TreeServer* Current, chanrec* c)
1102 log(DEBUG,"Sending FJOINs to other server for %s",c->name);
1104 snprintf(list,MAXBUF,":%s FJOIN %s %lu",Srv->GetServerName().c_str(),c->name,(unsigned long)c->age);
1105 std::map<char*,char*> *ulist = c->GetUsers();
1106 for (std::map<char*,char*>::iterator i = ulist->begin(); i != ulist->end(); i++)
1108 char* o = i->second;
1109 userrec* otheruser = (userrec*)o;
1110 strlcat(list," ",MAXBUF);
1111 strlcat(list,cmode(otheruser,c),MAXBUF);
1112 strlcat(list,otheruser->nick,MAXBUF);
1113 if (strlen(list)>(480-NICKMAX))
1115 log(DEBUG,"FJOIN line wrapped");
1116 this->WriteLine(list);
1117 snprintf(list,MAXBUF,":%s FJOIN %s %lu",Srv->GetServerName().c_str(),c->name,(unsigned long)c->age);
1120 if (list[strlen(list)-1] != ':')
1122 log(DEBUG,"Final FJOIN line");
1123 this->WriteLine(list);
1127 /* Send G, Q, Z and E lines */
1128 void SendXLines(TreeServer* Current)
1131 /* Yes, these arent too nice looking, but they get the job done */
1132 for (std::vector<ZLine>::iterator i = zlines.begin(); i != zlines.end(); i++)
1134 snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s",Srv->GetServerName().c_str(),i->ipaddr,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1135 this->WriteLine(data);
1137 for (std::vector<QLine>::iterator i = qlines.begin(); i != qlines.end(); i++)
1139 snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s",Srv->GetServerName().c_str(),i->nick,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1140 this->WriteLine(data);
1142 for (std::vector<GLine>::iterator i = glines.begin(); i != glines.end(); i++)
1144 snprintf(data,MAXBUF,":%s ADDLINE G %s %s %lu %lu :%s",Srv->GetServerName().c_str(),i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1145 this->WriteLine(data);
1147 for (std::vector<ELine>::iterator i = elines.begin(); i != elines.end(); i++)
1149 snprintf(data,MAXBUF,":%s ADDLINE E %s %s %lu %lu :%s",Srv->GetServerName().c_str(),i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1150 this->WriteLine(data);
1152 for (std::vector<ZLine>::iterator i = pzlines.begin(); i != pzlines.end(); i++)
1154 snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s",Srv->GetServerName().c_str(),i->ipaddr,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1155 this->WriteLine(data);
1157 for (std::vector<QLine>::iterator i = pqlines.begin(); i != pqlines.end(); i++)
1159 snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s",Srv->GetServerName().c_str(),i->nick,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1160 this->WriteLine(data);
1162 for (std::vector<GLine>::iterator i = pglines.begin(); i != pglines.end(); i++)
1164 snprintf(data,MAXBUF,":%s ADDLINE G %s %s %lu %lu :%s",Srv->GetServerName().c_str(),i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1165 this->WriteLine(data);
1167 for (std::vector<ELine>::iterator i = pelines.begin(); i != pelines.end(); i++)
1169 snprintf(data,MAXBUF,":%s ADDLINE E %s %s %lu %lu :%s",Srv->GetServerName().c_str(),i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1170 this->WriteLine(data);
1174 /* Send channel modes and topics */
1175 void SendChannelModes(TreeServer* Current)
1178 std::deque<std::string> list;
1179 for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
1181 SendFJoins(Current, c->second);
1182 snprintf(data,MAXBUF,":%s FMODE %s +%s",Srv->GetServerName().c_str(),c->second->name,chanmodes(c->second));
1183 this->WriteLine(data);
1184 if (*c->second->topic)
1186 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);
1187 this->WriteLine(data);
1189 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
1191 snprintf(data,MAXBUF,":%s FMODE %s +b %s",Srv->GetServerName().c_str(),c->second->name,b->data);
1192 this->WriteLine(data);
1194 FOREACH_MOD(I_OnSyncChannel,OnSyncChannel(c->second,(Module*)TreeProtocolModule,(void*)this));
1196 c->second->GetExtList(list);
1197 for (unsigned int j = 0; j < list.size(); j++)
1199 FOREACH_MOD(I_OnSyncChannelMetaData,OnSyncChannelMetaData(c->second,(Module*)TreeProtocolModule,(void*)this,list[j]));
1204 /* send all users and their oper state/modes */
1205 void SendUsers(TreeServer* Current)
1208 std::deque<std::string> list;
1209 for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
1211 if (u->second->registered == 7)
1213 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);
1214 this->WriteLine(data);
1215 if (strchr(u->second->modes,'o'))
1217 this->WriteLine(":"+std::string(u->second->nick)+" OPERTYPE "+std::string(u->second->oper));
1219 FOREACH_MOD(I_OnSyncUser,OnSyncUser(u->second,(Module*)TreeProtocolModule,(void*)this));
1221 u->second->GetExtList(list);
1222 for (unsigned int j = 0; j < list.size(); j++)
1224 FOREACH_MOD(I_OnSyncUserMetaData,OnSyncUserMetaData(u->second,(Module*)TreeProtocolModule,(void*)this,list[j]));
1230 /* This function is called when we want to send a netburst to a local
1231 * server. There is a set order we must do this, because for example
1232 * users require their servers to exist, and channels require their
1233 * users to exist. You get the idea.
1235 void DoBurst(TreeServer* s)
1237 Srv->SendOpers("*** Bursting to \2"+s->GetName()+"\2.");
1238 this->WriteLine("BURST");
1239 /* send our version string */
1240 this->WriteLine(":"+Srv->GetServerName()+" VERSION :"+Srv->GetVersion());
1241 /* Send server tree */
1242 this->SendServers(TreeRoot,s,1);
1243 /* Send users and their oper status */
1245 /* Send everything else (channel modes, xlines etc) */
1246 this->SendChannelModes(s);
1247 this->SendXLines(s);
1248 this->WriteLine("ENDBURST");
1249 Srv->SendOpers("*** Finished bursting to \2"+s->GetName()+"\2.");
1252 /* This function is called when we receive data from a remote
1253 * server. We buffer the data in a std::string (it doesnt stay
1254 * there for long), reading using InspSocket::Read() which can
1255 * read up to 16 kilobytes in one operation.
1257 * IF THIS FUNCTION RETURNS FALSE, THE CORE CLOSES AND DELETES
1258 * THE SOCKET OBJECT FOR US.
1260 virtual bool OnDataReady()
1262 char* data = this->Read();
1263 /* Check that the data read is a valid pointer and it has some content */
1266 this->in_buffer += data;
1267 /* While there is at least one new line in the buffer,
1268 * do something useful (we hope!) with it.
1270 while (in_buffer.find("\n") != std::string::npos)
1272 char* line = (char*)in_buffer.c_str();
1273 std::string ret = "";
1274 while ((*line != '\n') && (strlen(line)))
1276 if ((*line != '\r') && (*line != '\n'))
1280 if ((*line == '\n') || (*line == '\r'))
1283 /* Process this one, abort if it
1284 * didnt return true.
1290 memset(result,0,1024);
1292 log(DEBUG,"Original string '%s'",ret.c_str());
1293 /* ERROR + CAPAB is still allowed unencryped */
1294 if ((ret.substr(0,7) != "ERROR :") && (ret.substr(0,6) != "CAPAB "))
1296 int nbytes = from64tobits(out, ret.c_str(), 1024);
1297 if ((nbytes > 0) && (nbytes < 1024))
1299 log(DEBUG,"m_spanningtree: decrypt %d bytes",nbytes);
1300 ctx_in->Decrypt(out, result, nbytes, 1);
1301 for (int t = 0; t < nbytes; t++)
1302 if (result[t] == '\7') result[t] = 0;
1307 if (!this->ProcessLine(ret))
1313 /* EAGAIN returns an empty but non-NULL string, so this
1314 * evaluates to TRUE for EAGAIN but to FALSE for EOF.
1316 return (data != NULL);
1319 int WriteLine(std::string line)
1321 log(DEBUG,"OUT: %s",line.c_str());
1324 log(DEBUG,"AES context");
1326 char result64[10240];
1327 if (this->keylength)
1329 while (line.length() % this->keylength != 0)
1331 // pad it to be a multiple of the key length
1335 unsigned int ll = line.length();
1336 log(DEBUG,"Plaintext line with padding = %d chars",ll);
1337 ctx_out->Encrypt(line.c_str(), result, ll, 1);
1338 log(DEBUG,"Encrypted.");
1339 to64frombits((unsigned char*)result64,(unsigned char*)result,ll);
1341 log(DEBUG,"Encrypted: %s",line.c_str());
1342 //int from64tobits(char *out, const char *in, int maxlen);
1344 return this->Write(line + "\r\n");
1347 /* Handle ERROR command */
1348 bool Error(std::deque<std::string> params)
1350 if (params.size() < 1)
1352 std::string Errmsg = params[0];
1353 std::string SName = myhost;
1354 if (InboundServerName != "")
1356 SName = InboundServerName;
1358 Srv->SendOpers("*** ERROR from "+SName+": "+Errmsg);
1359 /* we will return false to cause the socket to close.
1364 /* Because the core won't let users or even SERVERS set +o,
1365 * we use the OPERTYPE command to do this.
1367 bool OperType(std::string prefix, std::deque<std::string> ¶ms)
1369 if (params.size() != 1)
1371 std::string opertype = params[0];
1372 userrec* u = Srv->FindNick(prefix);
1375 strlcpy(u->oper,opertype.c_str(),NICKMAX);
1376 if (!strchr(u->modes,'o'))
1378 strcat(u->modes,"o");
1380 DoOneToAllButSender(u->nick,"OPERTYPE",params,u->server);
1385 /* Because Andy insists that services-compatible servers must
1386 * implement SVSNICK and SVSJOIN, that's exactly what we do :p
1388 bool ForceNick(std::string prefix, std::deque<std::string> ¶ms)
1390 if (params.size() < 3)
1392 userrec* u = Srv->FindNick(params[0]);
1395 Srv->ChangeUserNick(u,params[1]);
1396 u->age = atoi(params[2].c_str());
1397 DoOneToAllButSender(prefix,"SVSNICK",params,prefix);
1402 bool ServiceJoin(std::string prefix, std::deque<std::string> ¶ms)
1404 if (params.size() < 2)
1406 userrec* u = Srv->FindNick(params[0]);
1409 Srv->JoinUserToChannel(u,params[1],"");
1410 DoOneToAllButSender(prefix,"SVSJOIN",params,prefix);
1415 bool RemoteRehash(std::string prefix, std::deque<std::string> ¶ms)
1417 if (params.size() < 1)
1419 std::string servermask = params[0];
1420 if (Srv->MatchText(Srv->GetServerName(),servermask))
1422 Srv->SendOpers("*** Remote rehash initiated from server \002"+prefix+"\002.");
1423 Srv->RehashServer();
1424 ReadConfiguration(false);
1426 DoOneToAllButSender(prefix,"REHASH",params,prefix);
1430 bool RemoteKill(std::string prefix, std::deque<std::string> ¶ms)
1432 if (params.size() != 2)
1434 std::string nick = params[0];
1435 userrec* u = Srv->FindNick(prefix);
1436 userrec* who = Srv->FindNick(nick);
1439 /* Prepend kill source, if we don't have one */
1440 std::string sourceserv = prefix;
1443 sourceserv = u->server;
1445 if (*(params[1].c_str()) != '[')
1447 params[1] = "[" + sourceserv + "] Killed (" + params[1] +")";
1449 std::string reason = params[1];
1450 params[1] = ":" + params[1];
1451 DoOneToAllButSender(prefix,"KILL",params,sourceserv);
1452 Srv->QuitUser(who,reason);
1457 bool LocalPong(std::string prefix, std::deque<std::string> ¶ms)
1459 if (params.size() < 1)
1461 TreeServer* ServerSource = FindServer(prefix);
1464 ServerSource->SetPingFlag();
1469 bool MetaData(std::string prefix, std::deque<std::string> ¶ms)
1471 if (params.size() < 3)
1473 TreeServer* ServerSource = FindServer(prefix);
1476 if (*(params[0].c_str()) == '#')
1478 chanrec* c = Srv->FindChannel(params[0]);
1481 FOREACH_MOD(I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]));
1486 userrec* u = Srv->FindNick(params[0]);
1489 FOREACH_MOD(I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2]));
1493 params[2] = ":" + params[2];
1494 DoOneToAllButSender(prefix,"METADATA",params,prefix);
1498 bool ServerVersion(std::string prefix, std::deque<std::string> ¶ms)
1500 if (params.size() < 1)
1502 TreeServer* ServerSource = FindServer(prefix);
1505 ServerSource->SetVersion(params[0]);
1507 params[0] = ":" + params[0];
1508 DoOneToAllButSender(prefix,"VERSION",params,prefix);
1512 bool ChangeHost(std::string prefix, std::deque<std::string> ¶ms)
1514 if (params.size() < 1)
1516 userrec* u = Srv->FindNick(prefix);
1519 Srv->ChangeHost(u,params[0]);
1520 DoOneToAllButSender(prefix,"FHOST",params,u->server);
1525 bool AddLine(std::string prefix, std::deque<std::string> ¶ms)
1527 if (params.size() < 6)
1529 std::string linetype = params[0]; /* Z, Q, E, G, K */
1530 std::string mask = params[1]; /* Line type dependent */
1531 std::string source = params[2]; /* may not be online or may be a server */
1532 std::string settime = params[3]; /* EPOCH time set */
1533 std::string duration = params[4]; /* Duration secs */
1534 std::string reason = params[5];
1536 switch (*(linetype.c_str()))
1539 add_zline(atoi(duration.c_str()), source.c_str(), reason.c_str(), mask.c_str());
1540 zline_set_creation_time((char*)mask.c_str(), atoi(settime.c_str()));
1543 add_qline(atoi(duration.c_str()), source.c_str(), reason.c_str(), mask.c_str());
1544 qline_set_creation_time((char*)mask.c_str(), atoi(settime.c_str()));
1547 add_eline(atoi(duration.c_str()), source.c_str(), reason.c_str(), mask.c_str());
1548 eline_set_creation_time((char*)mask.c_str(), atoi(settime.c_str()));
1551 add_gline(atoi(duration.c_str()), source.c_str(), reason.c_str(), mask.c_str());
1552 gline_set_creation_time((char*)mask.c_str(), atoi(settime.c_str()));
1555 add_kline(atoi(duration.c_str()), source.c_str(), reason.c_str(), mask.c_str());
1558 /* Just in case... */
1559 Srv->SendOpers("*** \2WARNING\2: Invalid xline type '"+linetype+"' sent by server "+prefix+", ignored!");
1562 /* Send it on its way */
1563 params[5] = ":" + params[5];
1564 DoOneToAllButSender(prefix,"ADDLINE",params,prefix);
1568 bool ChangeName(std::string prefix, std::deque<std::string> ¶ms)
1570 if (params.size() < 1)
1572 userrec* u = Srv->FindNick(prefix);
1575 Srv->ChangeGECOS(u,params[0]);
1576 params[0] = ":" + params[0];
1577 DoOneToAllButSender(prefix,"FNAME",params,u->server);
1582 bool Whois(std::string prefix, std::deque<std::string> ¶ms)
1584 if (params.size() < 1)
1586 log(DEBUG,"In IDLE command");
1587 userrec* u = Srv->FindNick(prefix);
1590 log(DEBUG,"USER EXISTS: %s",u->nick);
1591 // an incoming request
1592 if (params.size() == 1)
1594 userrec* x = Srv->FindNick(params[0]);
1595 if ((x) && (x->fd > -1))
1597 userrec* x = Srv->FindNick(params[0]);
1598 log(DEBUG,"Got IDLE");
1599 char signon[MAXBUF];
1601 log(DEBUG,"Sending back IDLE 3");
1602 snprintf(signon,MAXBUF,"%lu",(unsigned long)x->signon);
1603 snprintf(idle,MAXBUF,"%lu",(unsigned long)abs((x->idle_lastmsg)-time(NULL)));
1604 std::deque<std::string> par;
1605 par.push_back(prefix);
1606 par.push_back(signon);
1607 par.push_back(idle);
1608 // ours, we're done, pass it BACK
1609 DoOneToOne(params[0],"IDLE",par,u->server);
1613 // not ours pass it on
1614 DoOneToOne(prefix,"IDLE",params,x->server);
1617 else if (params.size() == 3)
1619 std::string who_did_the_whois = params[0];
1620 userrec* who_to_send_to = Srv->FindNick(who_did_the_whois);
1621 if ((who_to_send_to) && (who_to_send_to->fd > -1))
1623 log(DEBUG,"Got final IDLE");
1624 // an incoming reply to a whois we sent out
1625 std::string nick_whoised = prefix;
1626 unsigned long signon = atoi(params[1].c_str());
1627 unsigned long idle = atoi(params[2].c_str());
1628 if ((who_to_send_to) && (who_to_send_to->fd > -1))
1629 do_whois(who_to_send_to,u,signon,idle,(char*)nick_whoised.c_str());
1633 // not ours, pass it on
1634 DoOneToOne(prefix,"IDLE",params,who_to_send_to->server);
1641 bool LocalPing(std::string prefix, std::deque<std::string> ¶ms)
1643 if (params.size() < 1)
1645 std::string stufftobounce = params[0];
1646 this->WriteLine(":"+Srv->GetServerName()+" PONG "+stufftobounce);
1650 bool RemoteServer(std::string prefix, std::deque<std::string> ¶ms)
1652 if (params.size() < 4)
1654 std::string servername = params[0];
1655 std::string password = params[1];
1656 // hopcount is not used for a remote server, we calculate this ourselves
1657 std::string description = params[3];
1658 TreeServer* ParentOfThis = FindServer(prefix);
1661 this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
1664 TreeServer* CheckDupe = FindServer(servername);
1667 this->WriteLine("ERROR :Server "+servername+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
1668 Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
1671 TreeServer* Node = new TreeServer(servername,description,ParentOfThis,NULL);
1672 ParentOfThis->AddChild(Node);
1673 params[3] = ":" + params[3];
1674 DoOneToAllButSender(prefix,"SERVER",params,prefix);
1675 Srv->SendOpers("*** Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
1679 bool Outbound_Reply_Server(std::deque<std::string> ¶ms)
1681 if (params.size() < 4)
1683 std::string servername = params[0];
1684 std::string password = params[1];
1685 int hops = atoi(params[2].c_str());
1688 this->WriteLine("ERROR :Server too far away for authentication");
1689 Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, server is too far away for authentication");
1692 std::string description = params[3];
1693 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
1695 if ((x->Name == servername) && (x->RecvPass == password))
1697 TreeServer* CheckDupe = FindServer(servername);
1700 this->WriteLine("ERROR :Server "+servername+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
1701 Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
1704 // Begin the sync here. this kickstarts the
1705 // other side, waiting in WAIT_AUTH_2 state,
1706 // into starting their burst, as it shows
1707 // that we're happy.
1708 this->LinkState = CONNECTED;
1709 // we should add the details of this server now
1710 // to the servers tree, as a child of the root
1712 TreeServer* Node = new TreeServer(servername,description,TreeRoot,this);
1713 TreeRoot->AddChild(Node);
1714 params[3] = ":" + params[3];
1715 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,servername);
1716 this->bursting = true;
1717 this->DoBurst(Node);
1721 this->WriteLine("ERROR :Invalid credentials");
1722 Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, invalid link credentials");
1726 bool Inbound_Server(std::deque<std::string> ¶ms)
1728 if (params.size() < 4)
1730 std::string servername = params[0];
1731 std::string password = params[1];
1732 int hops = atoi(params[2].c_str());
1735 this->WriteLine("ERROR :Server too far away for authentication");
1736 Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, server is too far away for authentication");
1739 std::string description = params[3];
1740 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
1742 if ((x->Name == servername) && (x->RecvPass == password))
1744 TreeServer* CheckDupe = FindServer(servername);
1747 this->WriteLine("ERROR :Server "+servername+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
1748 Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
1751 /* If the config says this link is encrypted, but the remote side
1752 * hasnt bothered to send the AES command before SERVER, then we
1753 * boot them off as we MUST have this connection encrypted.
1755 if ((x->EncryptionKey != "") && (!this->ctx_in))
1757 this->WriteLine("ERROR :This link requires AES encryption to be enabled. Plaintext connection refused.");
1758 Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, remote server did not enable AES.");
1761 Srv->SendOpers("*** Verified incoming server connection from \002"+servername+"\002["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] ("+description+")");
1762 this->InboundServerName = servername;
1763 this->InboundDescription = description;
1764 // this is good. Send our details: Our server name and description and hopcount of 0,
1765 // along with the sendpass from this block.
1766 this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
1767 // move to the next state, we are now waiting for THEM.
1768 this->LinkState = WAIT_AUTH_2;
1772 this->WriteLine("ERROR :Invalid credentials");
1773 Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, invalid link credentials");
1777 void Split(std::string line, bool stripcolon, std::deque<std::string> &n)
1779 if (!strchr(line.c_str(),' '))
1784 std::stringstream s(line);
1785 std::string param = "";
1804 if ((param == ":") && (item > 0))
1827 bool ProcessLine(std::string line)
1829 char* l = (char*)line.c_str();
1830 while ((strlen(l)) && (l[strlen(l)-1] == '\r') || (l[strlen(l)-1] == '\n'))
1831 l[strlen(l)-1] = '\0';
1835 Srv->Log(DEBUG,"IN: "+line);
1837 std::deque<std::string> params;
1838 this->Split(line,true,params);
1839 std::string command = "";
1840 std::string prefix = "";
1841 if (((params[0].c_str())[0] == ':') && (params.size() > 1))
1844 command = params[1];
1845 char* pref = (char*)prefix.c_str();
1853 command = params[0];
1857 if ((!this->ctx_in) && (command == "AES"))
1859 std::string sserv = params[0];
1860 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
1862 if ((x->EncryptionKey != "") && (x->Name == sserv))
1864 this->InitAES(x->EncryptionKey,sserv);
1869 else if ((this->ctx_in) && (command == "AES"))
1871 WriteOpers("*** \2AES\2: Encryption already enabled on this connection yet %s is trying to enable it twice!",params[0].c_str());
1874 switch (this->LinkState)
1879 // Waiting for SERVER command from remote server. Server initiating
1880 // the connection sends the first SERVER command, listening server
1881 // replies with theirs if its happy, then if the initiator is happy,
1882 // it starts to send its net sync, which starts the merge, otherwise
1883 // it sends an ERROR.
1884 if (command == "PASS")
1886 /* Silently ignored */
1888 else if (command == "SERVER")
1890 return this->Inbound_Server(params);
1892 else if (command == "ERROR")
1894 return this->Error(params);
1896 else if (command == "USER")
1898 this->WriteLine("ERROR :Client connections to this port are prohibited.");
1901 else if (command == "CAPAB")
1903 return this->Capab(params);
1905 else if ((command == "U") || (command == "S"))
1907 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
1912 this->WriteLine("ERROR :Invalid command in negotiation phase.");
1917 // Waiting for start of other side's netmerge to say they liked our
1919 if (command == "SERVER")
1921 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
1925 else if ((command == "U") || (command == "S"))
1927 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
1930 else if (command == "BURST")
1932 this->LinkState = CONNECTED;
1933 Node = new TreeServer(InboundServerName,InboundDescription,TreeRoot,this);
1934 TreeRoot->AddChild(Node);
1936 params.push_back(InboundServerName);
1937 params.push_back("*");
1938 params.push_back("1");
1939 params.push_back(":"+InboundDescription);
1940 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,InboundServerName);
1941 this->bursting = true;
1942 this->DoBurst(Node);
1944 else if (command == "ERROR")
1946 return this->Error(params);
1948 else if (command == "CAPAB")
1950 return this->Capab(params);
1955 this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
1959 if (command == "SERVER")
1961 // another server we connected to, which was in WAIT_AUTH_1 state,
1962 // has just sent us their credentials. If we get this far, theyre
1963 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
1964 // if we're happy with this, we should send our netburst which
1965 // kickstarts the merge.
1966 return this->Outbound_Reply_Server(params);
1968 else if (command == "ERROR")
1970 return this->Error(params);
1974 // This is the 'authenticated' state, when all passwords
1975 // have been exchanged and anything past this point is taken
1980 std::string direction = prefix;
1981 userrec* t = Srv->FindNick(prefix);
1984 direction = t->server;
1986 TreeServer* route_back_again = BestRouteTo(direction);
1987 if ((!route_back_again) || (route_back_again->GetSocket() != this))
1989 if (route_back_again)
1990 log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
1995 * When there is activity on the socket, reset the ping counter so
1996 * that we're not wasting bandwidth pinging an active server.
1998 route_back_again->SetNextPingTime(time(NULL) + 120);
1999 route_back_again->SetPingFlag();
2002 if (command == "SVSMODE")
2004 /* Services expects us to implement
2005 * SVSMODE. In inspircd its the same as
2010 std::string target = "";
2011 /* Yes, know, this is a mess. Its reasonably fast though as we're
2012 * working with std::string here.
2014 if ((command == "NICK") && (params.size() > 1))
2016 return this->IntroduceClient(prefix,params);
2018 else if (command == "FJOIN")
2020 return this->ForceJoin(prefix,params);
2022 else if (command == "SERVER")
2024 return this->RemoteServer(prefix,params);
2026 else if (command == "ERROR")
2028 return this->Error(params);
2030 else if (command == "OPERTYPE")
2032 return this->OperType(prefix,params);
2034 else if (command == "FMODE")
2036 return this->ForceMode(prefix,params);
2038 else if (command == "KILL")
2040 return this->RemoteKill(prefix,params);
2042 else if (command == "FTOPIC")
2044 return this->ForceTopic(prefix,params);
2046 else if (command == "REHASH")
2048 return this->RemoteRehash(prefix,params);
2050 else if (command == "METADATA")
2052 return this->MetaData(prefix,params);
2054 else if (command == "PING")
2056 return this->LocalPing(prefix,params);
2058 else if (command == "PONG")
2060 return this->LocalPong(prefix,params);
2062 else if (command == "VERSION")
2064 return this->ServerVersion(prefix,params);
2066 else if (command == "FHOST")
2068 return this->ChangeHost(prefix,params);
2070 else if (command == "FNAME")
2072 return this->ChangeName(prefix,params);
2074 else if (command == "ADDLINE")
2076 return this->AddLine(prefix,params);
2078 else if (command == "SVSNICK")
2082 prefix = this->GetName();
2084 return this->ForceNick(prefix,params);
2086 else if (command == "IDLE")
2088 return this->Whois(prefix,params);
2090 else if (command == "SVSJOIN")
2094 prefix = this->GetName();
2096 return this->ServiceJoin(prefix,params);
2098 else if (command == "SQUIT")
2100 if (params.size() == 2)
2102 this->Squit(FindServer(params[0]),params[1]);
2106 else if (command == "ENDBURST")
2108 this->bursting = false;
2113 // not a special inter-server command.
2114 // Emulate the actual user doing the command,
2115 // this saves us having a huge ugly parser.
2116 userrec* who = Srv->FindNick(prefix);
2117 std::string sourceserv = this->myhost;
2118 if (this->InboundServerName != "")
2120 sourceserv = this->InboundServerName;
2125 target = who->server;
2126 char* strparams[127];
2127 for (unsigned int q = 0; q < params.size(); q++)
2129 strparams[q] = (char*)params[q].c_str();
2131 Srv->CallCommandHandler(command, strparams, params.size(), who);
2135 // its not a user. Its either a server, or somethings screwed up.
2136 if (IsServer(prefix))
2138 target = Srv->GetServerName();
2142 log(DEBUG,"Command with unknown origin '%s'",prefix.c_str());
2146 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
2155 virtual std::string GetName()
2157 std::string sourceserv = this->myhost;
2158 if (this->InboundServerName != "")
2160 sourceserv = this->InboundServerName;
2165 virtual void OnTimeout()
2167 if (this->LinkState == CONNECTING)
2169 Srv->SendOpers("*** CONNECT: Connection to \002"+myhost+"\002 timed out.");
2173 virtual void OnClose()
2175 // Connection closed.
2176 // If the connection is fully up (state CONNECTED)
2177 // then propogate a netsplit to all peers.
2178 std::string quitserver = this->myhost;
2179 if (this->InboundServerName != "")
2181 quitserver = this->InboundServerName;
2183 TreeServer* s = FindServer(quitserver);
2186 Squit(s,"Remote host closed the connection");
2188 WriteOpers("Server '\2%s\2' closed the connection.",quitserver.c_str());
2191 virtual int OnIncomingConnection(int newsock, char* ip)
2193 TreeSocket* s = new TreeSocket(newsock, ip);
2199 void AddThisServer(TreeServer* server, std::deque<TreeServer*> &list)
2201 for (unsigned int c = 0; c < list.size(); c++)
2203 if (list[c] == server)
2208 list.push_back(server);
2211 // returns a list of DIRECT servernames for a specific channel
2212 void GetListOfServersForChannel(chanrec* c, std::deque<TreeServer*> &list)
2214 std::map<char*,char*> *ulist = c->GetUsers();
2215 for (std::map<char*,char*>::iterator i = ulist->begin(); i != ulist->end(); i++)
2217 char* o = i->second;
2218 userrec* otheruser = (userrec*)o;
2219 if (otheruser->fd < 0)
2221 TreeServer* best = BestRouteTo(otheruser->server);
2223 AddThisServer(best,list);
2229 bool DoOneToAllButSenderRaw(std::string data, std::string omit, std::string prefix, std::string command, std::deque<std::string> ¶ms)
2231 TreeServer* omitroute = BestRouteTo(omit);
2232 if ((command == "NOTICE") || (command == "PRIVMSG"))
2234 if ((params.size() >= 2) && (*(params[0].c_str()) != '$'))
2236 if (*(params[0].c_str()) != '#')
2238 // special routing for private messages/notices
2239 userrec* d = Srv->FindNick(params[0]);
2242 std::deque<std::string> par;
2243 par.push_back(params[0]);
2244 par.push_back(":"+params[1]);
2245 DoOneToOne(prefix,command,par,d->server);
2251 log(DEBUG,"Channel privmsg going to chan %s",params[0].c_str());
2252 chanrec* c = Srv->FindChannel(params[0]);
2255 std::deque<TreeServer*> list;
2256 GetListOfServersForChannel(c,list);
2257 log(DEBUG,"Got a list of %d servers",list.size());
2258 unsigned int lsize = list.size();
2259 for (unsigned int i = 0; i < lsize; i++)
2261 TreeSocket* Sock = list[i]->GetSocket();
2262 if ((Sock) && (list[i]->GetName() != omit) && (omitroute != list[i]))
2264 log(DEBUG,"Writing privmsg to server %s",list[i]->GetName().c_str());
2265 Sock->WriteLine(data);
2273 unsigned int items = TreeRoot->ChildCount();
2274 for (unsigned int x = 0; x < items; x++)
2276 TreeServer* Route = TreeRoot->GetChild(x);
2277 if ((Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
2279 TreeSocket* Sock = Route->GetSocket();
2280 Sock->WriteLine(data);
2286 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string omit)
2288 TreeServer* omitroute = BestRouteTo(omit);
2289 std::string FullLine = ":" + prefix + " " + command;
2290 unsigned int words = params.size();
2291 for (unsigned int x = 0; x < words; x++)
2293 FullLine = FullLine + " " + params[x];
2295 unsigned int items = TreeRoot->ChildCount();
2296 for (unsigned int x = 0; x < items; x++)
2298 TreeServer* Route = TreeRoot->GetChild(x);
2299 // Send the line IF:
2300 // The route has a socket (its a direct connection)
2301 // The route isnt the one to be omitted
2302 // The route isnt the path to the one to be omitted
2303 if ((Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
2305 TreeSocket* Sock = Route->GetSocket();
2306 Sock->WriteLine(FullLine);
2312 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> ¶ms)
2314 std::string FullLine = ":" + prefix + " " + command;
2315 unsigned int words = params.size();
2316 for (unsigned int x = 0; x < words; x++)
2318 FullLine = FullLine + " " + params[x];
2320 unsigned int items = TreeRoot->ChildCount();
2321 for (unsigned int x = 0; x < items; x++)
2323 TreeServer* Route = TreeRoot->GetChild(x);
2324 if (Route->GetSocket())
2326 TreeSocket* Sock = Route->GetSocket();
2327 Sock->WriteLine(FullLine);
2333 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string target)
2335 TreeServer* Route = BestRouteTo(target);
2338 std::string FullLine = ":" + prefix + " " + command;
2339 unsigned int words = params.size();
2340 for (unsigned int x = 0; x < words; x++)
2342 FullLine = FullLine + " " + params[x];
2344 if (Route->GetSocket())
2346 TreeSocket* Sock = Route->GetSocket();
2347 Sock->WriteLine(FullLine);
2357 std::vector<TreeSocket*> Bindings;
2359 void ReadConfiguration(bool rebind)
2361 Conf = new ConfigReader;
2364 for (int j =0; j < Conf->Enumerate("bind"); j++)
2366 std::string Type = Conf->ReadValue("bind","type",j);
2367 std::string IP = Conf->ReadValue("bind","address",j);
2368 long Port = Conf->ReadInteger("bind","port",j,true);
2369 if (Type == "servers")
2375 TreeSocket* listener = new TreeSocket(IP.c_str(),Port,true,10);
2376 if (listener->GetState() == I_LISTENING)
2378 Srv->AddSocket(listener);
2379 Bindings.push_back(listener);
2383 log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port %d",Port);
2391 for (int j =0; j < Conf->Enumerate("link"); j++)
2394 L.Name = Conf->ReadValue("link","name",j);
2395 L.IPAddr = Conf->ReadValue("link","ipaddr",j);
2396 L.Port = Conf->ReadInteger("link","port",j,true);
2397 L.SendPass = Conf->ReadValue("link","sendpass",j);
2398 L.RecvPass = Conf->ReadValue("link","recvpass",j);
2399 L.AutoConnect = Conf->ReadInteger("link","autoconnect",j,true);
2400 L.EncryptionKey = Conf->ReadValue("link","encryptionkey",j);
2401 L.HiddenFromStats = Conf->ReadFlag("link","hidden",j);
2402 L.NextConnectTime = time(NULL) + L.AutoConnect;
2403 /* Bugfix by brain, do not allow people to enter bad configurations */
2404 if ((L.RecvPass != "") && (L.SendPass != "") && (L.Name != "") && (L.Port))
2406 LinkBlocks.push_back(L);
2407 log(DEBUG,"m_spanningtree: Read server %s with host %s:%d",L.Name.c_str(),L.IPAddr.c_str(),L.Port);
2411 if (L.RecvPass == "")
2413 log(DEFAULT,"Invalid configuration for server '%s', recvpass not defined!",L.Name.c_str());
2415 else if (L.SendPass == "")
2417 log(DEFAULT,"Invalid configuration for server '%s', sendpass not defined!",L.Name.c_str());
2419 else if (L.Name == "")
2421 log(DEFAULT,"Invalid configuration, link tag without a name!");
2425 log(DEFAULT,"Invalid configuration for server '%s', no port specified!",L.Name.c_str());
2433 class ModuleSpanningTree : public Module
2435 std::vector<TreeSocket*> Bindings;
2441 ModuleSpanningTree(Server* Me)
2442 : Module::Module(Me)
2447 // Create the root of the tree
2448 TreeRoot = new TreeServer(Srv->GetServerName(),Srv->GetServerDescription());
2450 ReadConfiguration(true);
2453 void ShowLinks(TreeServer* Current, userrec* user, int hops)
2455 std::string Parent = TreeRoot->GetName();
2456 if (Current->GetParent())
2458 Parent = Current->GetParent()->GetName();
2460 for (unsigned int q = 0; q < Current->ChildCount(); q++)
2462 ShowLinks(Current->GetChild(q),user,hops+1);
2464 WriteServ(user->fd,"364 %s %s %s :%d %s",user->nick,Current->GetName().c_str(),Parent.c_str(),hops,Current->GetDesc().c_str());
2467 int CountLocalServs()
2469 return TreeRoot->ChildCount();
2474 return serverlist.size();
2477 void HandleLinks(char** parameters, int pcnt, userrec* user)
2479 ShowLinks(TreeRoot,user,0);
2480 WriteServ(user->fd,"365 %s * :End of /LINKS list.",user->nick);
2484 void HandleLusers(char** parameters, int pcnt, userrec* user)
2486 WriteServ(user->fd,"251 %s :There are %d users and %d invisible on %d servers",user->nick,usercnt()-usercount_invisible(),usercount_invisible(),this->CountServs());
2487 WriteServ(user->fd,"252 %s %d :operator(s) online",user->nick,usercount_opers());
2488 WriteServ(user->fd,"253 %s %d :unknown connections",user->nick,usercount_unknown());
2489 WriteServ(user->fd,"254 %s %d :channels formed",user->nick,chancount());
2490 WriteServ(user->fd,"254 %s :I have %d clients and %d servers",user->nick,local_count(),this->CountLocalServs());
2494 // WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS.
2496 void ShowMap(TreeServer* Current, userrec* user, int depth, char matrix[128][80])
2500 for (int t = 0; t < depth; t++)
2502 matrix[line][t] = ' ';
2505 // For Aligning, we need to work out exactly how deep this thing is, and produce
2506 // a 'Spacer' String to compensate.
2509 memset(spacer,' ',40);
2510 if ((40 - Current->GetName().length() - depth) > 1) {
2511 spacer[40 - Current->GetName().length() - depth] = '\0';
2520 if (clientlist.size() == 0) {
2521 // If there are no users, WHO THE HELL DID THE /MAP?!?!?!
2526 percent = ((float)Current->GetUserCount() / (float)clientlist.size()) * 100;
2528 snprintf(text, 80, "%s %s%5d [%5.2f%%]", Current->GetName().c_str(), spacer, Current->GetUserCount(), percent);
2529 strlcpy(&matrix[line][depth],text,80);
2531 for (unsigned int q = 0; q < Current->ChildCount(); q++)
2533 ShowMap(Current->GetChild(q),user,depth+2,matrix);
2538 // Ok, prepare to be confused.
2539 // After much mulling over how to approach this, it struck me that
2540 // the 'usual' way of doing a /MAP isnt the best way. Instead of
2541 // keeping track of a ton of ascii characters, and line by line
2542 // under recursion working out where to place them using multiplications
2543 // and divisons, we instead render the map onto a backplane of characters
2544 // (a character matrix), then draw the branches as a series of "L" shapes
2545 // from the nodes. This is not only friendlier on CPU it uses less stack.
2547 void HandleMap(char** parameters, int pcnt, userrec* user)
2549 // This array represents a virtual screen which we will
2550 // "scratch" draw to, as the console device of an irc
2551 // client does not provide for a proper terminal.
2552 char matrix[128][80];
2553 for (unsigned int t = 0; t < 128; t++)
2555 matrix[t][0] = '\0';
2558 // The only recursive bit is called here.
2559 ShowMap(TreeRoot,user,0,matrix);
2560 // Process each line one by one. The algorithm has a limit of
2561 // 128 servers (which is far more than a spanning tree should have
2562 // anyway, so we're ok). This limit can be raised simply by making
2563 // the character matrix deeper, 128 rows taking 10k of memory.
2564 for (int l = 1; l < line; l++)
2566 // scan across the line looking for the start of the
2567 // servername (the recursive part of the algorithm has placed
2568 // the servers at indented positions depending on what they
2570 int first_nonspace = 0;
2571 while (matrix[l][first_nonspace] == ' ')
2576 // Draw the `- (corner) section: this may be overwritten by
2577 // another L shape passing along the same vertical pane, becoming
2578 // a |- (branch) section instead.
2579 matrix[l][first_nonspace] = '-';
2580 matrix[l][first_nonspace-1] = '`';
2582 // Draw upwards until we hit the parent server, causing possibly
2583 // other corners (`-) to become branches (|-)
2584 while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`'))
2586 matrix[l2][first_nonspace-1] = '|';
2590 // dump the whole lot to the user. This is the easy bit, honest.
2591 for (int t = 0; t < line; t++)
2593 WriteServ(user->fd,"006 %s :%s",user->nick,&matrix[t][0]);
2595 WriteServ(user->fd,"007 %s :End of /MAP",user->nick);
2599 int HandleSquit(char** parameters, int pcnt, userrec* user)
2601 TreeServer* s = FindServerMask(parameters[0]);
2606 WriteServ(user->fd,"NOTICE %s :*** SQUIT: Foolish mortal, you cannot make a server SQUIT itself! (%s matches local server name)",user->nick,parameters[0]);
2609 TreeSocket* sock = s->GetSocket();
2612 log(DEBUG,"Splitting server %s",s->GetName().c_str());
2613 WriteOpers("*** SQUIT: Server \002%s\002 removed from network by %s",parameters[0],user->nick);
2614 sock->Squit(s,"Server quit by "+std::string(user->nick)+"!"+std::string(user->ident)+"@"+std::string(user->host));
2615 Srv->RemoveSocket(sock);
2619 WriteServ(user->fd,"NOTICE %s :*** SQUIT: The server \002%s\002 is not directly connected.",user->nick,parameters[0]);
2624 WriteServ(user->fd,"NOTICE %s :*** SQUIT: The server \002%s\002 does not exist on the network.",user->nick,parameters[0]);
2629 int HandleRemoteWhois(char** parameters, int pcnt, userrec* user)
2631 if ((user->fd > -1) && (pcnt > 1))
2633 userrec* remote = Srv->FindNick(parameters[1]);
2634 if ((remote) && (remote->fd < 0))
2636 std::deque<std::string> params;
2637 params.push_back(parameters[1]);
2638 DoOneToOne(user->nick,"IDLE",params,remote->server);
2643 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[1]);
2644 WriteServ(user->fd,"318 %s %s :End of /WHOIS list.",user->nick, parameters[1]);
2651 void DoPingChecks(time_t curtime)
2653 for (unsigned int j = 0; j < TreeRoot->ChildCount(); j++)
2655 TreeServer* serv = TreeRoot->GetChild(j);
2656 TreeSocket* sock = serv->GetSocket();
2659 if (curtime >= serv->NextPingTime())
2661 if (serv->AnsweredLastPing())
2663 sock->WriteLine(":"+Srv->GetServerName()+" PING "+serv->GetName());
2664 serv->SetNextPingTime(curtime + 120);
2668 // they didnt answer, boot them
2669 WriteOpers("*** Server \002%s\002 pinged out",serv->GetName().c_str());
2670 sock->Squit(serv,"Ping timeout");
2671 Srv->RemoveSocket(sock);
2680 void AutoConnectServers(time_t curtime)
2682 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2684 if ((x->AutoConnect) && (curtime >= x->NextConnectTime))
2686 log(DEBUG,"Auto-Connecting %s",x->Name.c_str());
2687 x->NextConnectTime = curtime + x->AutoConnect;
2688 TreeServer* CheckDupe = FindServer(x->Name);
2691 // an autoconnected server is not connected. Check if its time to connect it
2692 WriteOpers("*** AUTOCONNECT: Auto-connecting server \002%s\002 (%lu seconds until next attempt)",x->Name.c_str(),x->AutoConnect);
2693 TreeSocket* newsocket = new TreeSocket(x->IPAddr,x->Port,false,10,x->Name);
2694 Srv->AddSocket(newsocket);
2700 int HandleVersion(char** parameters, int pcnt, userrec* user)
2702 // we've already checked if pcnt > 0, so this is safe
2703 TreeServer* found = FindServerMask(parameters[0]);
2706 std::string Version = found->GetVersion();
2707 WriteServ(user->fd,"351 %s :%s",user->nick,Version.c_str());
2708 if (found == TreeRoot)
2710 std::stringstream out(Config->data005);
2711 std::string token = "";
2712 std::string line5 = "";
2713 int token_counter = 0;
2717 line5 = line5 + token + " ";
2719 if ((token_counter >= 13) || (out.eof() == true))
2721 WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
2730 WriteServ(user->fd,"402 %s %s :No such server",user->nick,parameters[0]);
2735 int HandleConnect(char** parameters, int pcnt, userrec* user)
2737 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2739 if (Srv->MatchText(x->Name.c_str(),parameters[0]))
2741 TreeServer* CheckDupe = FindServer(x->Name);
2744 WriteServ(user->fd,"NOTICE %s :*** CONNECT: Connecting to server: \002%s\002 (%s:%d)",user->nick,x->Name.c_str(),(x->HiddenFromStats ? "<hidden>" : x->IPAddr.c_str()),x->Port);
2745 TreeSocket* newsocket = new TreeSocket(x->IPAddr,x->Port,false,10,x->Name);
2746 Srv->AddSocket(newsocket);
2751 WriteServ(user->fd,"NOTICE %s :*** CONNECT: Server \002%s\002 already exists on the network and is connected via \002%s\002",user->nick,x->Name.c_str(),CheckDupe->GetParent()->GetName().c_str());
2756 WriteServ(user->fd,"NOTICE %s :*** CONNECT: No server matching \002%s\002 could be found in the config file.",user->nick,parameters[0]);
2760 virtual int OnStats(char statschar, userrec* user)
2762 if (statschar == 'c')
2764 for (unsigned int i = 0; i < LinkBlocks.size(); i++)
2766 WriteServ(user->fd,"213 %s C *@%s * %s %d 0 %c%c%c",user->nick,(LinkBlocks[i].HiddenFromStats ? "<hidden>" : LinkBlocks[i].IPAddr).c_str(),LinkBlocks[i].Name.c_str(),LinkBlocks[i].Port,(LinkBlocks[i].EncryptionKey != "" ? 'e' : '-'),(LinkBlocks[i].AutoConnect ? 'a' : '-'),'s');
2767 WriteServ(user->fd,"244 %s H * * %s",user->nick,LinkBlocks[i].Name.c_str());
2769 WriteServ(user->fd,"219 %s %c :End of /STATS report",user->nick,statschar);
2770 WriteOpers("*** Notice: Stats '%c' requested by %s (%s@%s)",statschar,user->nick,user->ident,user->host);
2776 virtual int OnPreCommand(std::string command, char **parameters, int pcnt, userrec *user, bool validated)
2778 /* If the command doesnt appear to be valid, we dont want to mess with it. */
2782 if (command == "CONNECT")
2784 return this->HandleConnect(parameters,pcnt,user);
2786 else if (command == "SQUIT")
2788 return this->HandleSquit(parameters,pcnt,user);
2790 else if (command == "MAP")
2792 this->HandleMap(parameters,pcnt,user);
2795 else if (command == "LUSERS")
2797 this->HandleLusers(parameters,pcnt,user);
2800 else if (command == "LINKS")
2802 this->HandleLinks(parameters,pcnt,user);
2805 else if (command == "WHOIS")
2810 return this->HandleRemoteWhois(parameters,pcnt,user);
2813 else if ((command == "VERSION") && (pcnt > 0))
2815 this->HandleVersion(parameters,pcnt,user);
2818 else if (Srv->IsValidModuleCommand(command, pcnt, user))
2820 // this bit of code cleverly routes all module commands
2821 // to all remote severs *automatically* so that modules
2822 // can just handle commands locally, without having
2823 // to have any special provision in place for remote
2824 // commands and linking protocols.
2825 std::deque<std::string> params;
2827 for (int j = 0; j < pcnt; j++)
2829 if (strchr(parameters[j],' '))
2831 params.push_back(":" + std::string(parameters[j]));
2835 params.push_back(std::string(parameters[j]));
2838 DoOneToMany(user->nick,command,params);
2843 virtual void OnGetServerDescription(std::string servername,std::string &description)
2845 TreeServer* s = FindServer(servername);
2848 description = s->GetDesc();
2852 virtual void OnUserInvite(userrec* source,userrec* dest,chanrec* channel)
2854 if (source->fd > -1)
2856 std::deque<std::string> params;
2857 params.push_back(dest->nick);
2858 params.push_back(channel->name);
2859 DoOneToMany(source->nick,"INVITE",params);
2863 virtual void OnPostLocalTopicChange(userrec* user, chanrec* chan, std::string topic)
2865 std::deque<std::string> params;
2866 params.push_back(chan->name);
2867 params.push_back(":"+topic);
2868 DoOneToMany(user->nick,"TOPIC",params);
2871 virtual void OnWallops(userrec* user, std::string text)
2875 std::deque<std::string> params;
2876 params.push_back(":"+text);
2877 DoOneToMany(user->nick,"WALLOPS",params);
2881 virtual void OnUserNotice(userrec* user, void* dest, int target_type, std::string text)
2883 if (target_type == TYPE_USER)
2885 userrec* d = (userrec*)dest;
2886 if ((d->fd < 0) && (user->fd > -1))
2888 std::deque<std::string> params;
2890 params.push_back(d->nick);
2891 params.push_back(":"+text);
2892 DoOneToOne(user->nick,"NOTICE",params,d->server);
2899 chanrec *c = (chanrec*)dest;
2900 std::deque<TreeServer*> list;
2901 GetListOfServersForChannel(c,list);
2902 unsigned int ucount = list.size();
2903 for (unsigned int i = 0; i < ucount; i++)
2905 TreeSocket* Sock = list[i]->GetSocket();
2907 Sock->WriteLine(":"+std::string(user->nick)+" NOTICE "+std::string(c->name)+" :"+text);
2913 virtual void OnUserMessage(userrec* user, void* dest, int target_type, std::string text)
2915 if (target_type == TYPE_USER)
2917 // route private messages which are targetted at clients only to the server
2918 // which needs to receive them
2919 userrec* d = (userrec*)dest;
2920 if ((d->fd < 0) && (user->fd > -1))
2922 std::deque<std::string> params;
2924 params.push_back(d->nick);
2925 params.push_back(":"+text);
2926 DoOneToOne(user->nick,"PRIVMSG",params,d->server);
2933 chanrec *c = (chanrec*)dest;
2934 std::deque<TreeServer*> list;
2935 GetListOfServersForChannel(c,list);
2936 unsigned int ucount = list.size();
2937 for (unsigned int i = 0; i < ucount; i++)
2939 TreeSocket* Sock = list[i]->GetSocket();
2941 Sock->WriteLine(":"+std::string(user->nick)+" PRIVMSG "+std::string(c->name)+" :"+text);
2947 virtual void OnBackgroundTimer(time_t curtime)
2949 AutoConnectServers(curtime);
2950 DoPingChecks(curtime);
2953 virtual void OnUserJoin(userrec* user, chanrec* channel)
2955 // Only do this for local users
2958 std::deque<std::string> params;
2960 params.push_back(channel->name);
2963 // if the channel has a key, force the join by emulating the key.
2964 params.push_back(channel->key);
2966 if (channel->GetUserCounter() > 1)
2968 // not the first in the channel
2969 DoOneToMany(user->nick,"JOIN",params);
2973 // first in the channel, set up their permissions
2974 // and the channel TS with FJOIN.
2976 snprintf(ts,24,"%lu",(unsigned long)channel->age);
2978 params.push_back(channel->name);
2979 params.push_back(ts);
2980 params.push_back("@"+std::string(user->nick));
2981 DoOneToMany(Srv->GetServerName(),"FJOIN",params);
2986 virtual void OnChangeHost(userrec* user, std::string newhost)
2988 // only occurs for local clients
2989 if (user->registered != 7)
2991 std::deque<std::string> params;
2992 params.push_back(newhost);
2993 DoOneToMany(user->nick,"FHOST",params);
2996 virtual void OnChangeName(userrec* user, std::string gecos)
2998 // only occurs for local clients
2999 if (user->registered != 7)
3001 std::deque<std::string> params;
3002 params.push_back(gecos);
3003 DoOneToMany(user->nick,"FNAME",params);
3006 virtual void OnUserPart(userrec* user, chanrec* channel, std::string partmessage)
3010 std::deque<std::string> params;
3011 params.push_back(channel->name);
3012 if (partmessage != "")
3013 params.push_back(":"+partmessage);
3014 DoOneToMany(user->nick,"PART",params);
3018 virtual void OnUserConnect(userrec* user)
3020 char agestr[MAXBUF];
3023 std::deque<std::string> params;
3024 snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age);
3025 params.push_back(agestr);
3026 params.push_back(user->nick);
3027 params.push_back(user->host);
3028 params.push_back(user->dhost);
3029 params.push_back(user->ident);
3030 params.push_back("+"+std::string(user->modes));
3031 params.push_back(user->ip);
3032 params.push_back(":"+std::string(user->fullname));
3033 DoOneToMany(Srv->GetServerName(),"NICK",params);
3035 // User is Local, change needs to be reflected!
3036 TreeServer* SourceServer = FindServer(user->server);
3038 SourceServer->AddUserCount();
3044 virtual void OnUserQuit(userrec* user, std::string reason)
3046 if ((user->fd > -1) && (user->registered == 7))
3048 std::deque<std::string> params;
3049 params.push_back(":"+reason);
3050 DoOneToMany(user->nick,"QUIT",params);
3052 // Regardless, We need to modify the user Counts..
3053 TreeServer* SourceServer = FindServer(user->server);
3055 SourceServer->DelUserCount();
3060 virtual void OnUserPostNick(userrec* user, std::string oldnick)
3064 std::deque<std::string> params;
3065 params.push_back(user->nick);
3066 DoOneToMany(oldnick,"NICK",params);
3070 virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, std::string reason)
3072 if ((source) && (source->fd > -1))
3074 std::deque<std::string> params;
3075 params.push_back(chan->name);
3076 params.push_back(user->nick);
3077 params.push_back(":"+reason);
3078 DoOneToMany(source->nick,"KICK",params);
3082 virtual void OnRemoteKill(userrec* source, userrec* dest, std::string reason)
3084 std::deque<std::string> params;
3085 params.push_back(dest->nick);
3086 params.push_back(":"+reason);
3087 DoOneToMany(source->nick,"KILL",params);
3090 virtual void OnRehash(std::string parameter)
3092 if (parameter != "")
3094 std::deque<std::string> params;
3095 params.push_back(parameter);
3096 DoOneToMany(Srv->GetServerName(),"REHASH",params);
3098 if (Srv->MatchText(Srv->GetServerName(),parameter))
3100 Srv->SendOpers("*** Remote rehash initiated from server \002"+Srv->GetServerName()+"\002.");
3101 Srv->RehashServer();
3104 ReadConfiguration(false);
3107 // note: the protocol does not allow direct umode +o except
3108 // via NICK with 8 params. sending OPERTYPE infers +o modechange
3110 virtual void OnOper(userrec* user, std::string opertype)
3114 std::deque<std::string> params;
3115 params.push_back(opertype);
3116 DoOneToMany(user->nick,"OPERTYPE",params);
3120 void OnLine(userrec* source, std::string host, bool adding, char linetype, long duration, std::string reason)
3122 if (source->fd > -1)
3125 snprintf(type,8,"%cLINE",linetype);
3126 std::string stype = type;
3129 char sduration[MAXBUF];
3130 snprintf(sduration,MAXBUF,"%ld",duration);
3131 std::deque<std::string> params;
3132 params.push_back(host);
3133 params.push_back(sduration);
3134 params.push_back(":"+reason);
3135 DoOneToMany(source->nick,stype,params);
3139 std::deque<std::string> params;
3140 params.push_back(host);
3141 DoOneToMany(source->nick,stype,params);
3146 virtual void OnAddGLine(long duration, userrec* source, std::string reason, std::string hostmask)
3148 OnLine(source,hostmask,true,'G',duration,reason);
3151 virtual void OnAddZLine(long duration, userrec* source, std::string reason, std::string ipmask)
3153 OnLine(source,ipmask,true,'Z',duration,reason);
3156 virtual void OnAddQLine(long duration, userrec* source, std::string reason, std::string nickmask)
3158 OnLine(source,nickmask,true,'Q',duration,reason);
3161 virtual void OnAddELine(long duration, userrec* source, std::string reason, std::string hostmask)
3163 OnLine(source,hostmask,true,'E',duration,reason);
3166 virtual void OnDelGLine(userrec* source, std::string hostmask)
3168 OnLine(source,hostmask,false,'G',0,"");
3171 virtual void OnDelZLine(userrec* source, std::string ipmask)
3173 OnLine(source,ipmask,false,'Z',0,"");
3176 virtual void OnDelQLine(userrec* source, std::string nickmask)
3178 OnLine(source,nickmask,false,'Q',0,"");
3181 virtual void OnDelELine(userrec* source, std::string hostmask)
3183 OnLine(source,hostmask,false,'E',0,"");
3186 virtual void OnMode(userrec* user, void* dest, int target_type, std::string text)
3188 if ((user->fd > -1) && (user->registered == 7))
3190 if (target_type == TYPE_USER)
3192 userrec* u = (userrec*)dest;
3193 std::deque<std::string> params;
3194 params.push_back(u->nick);
3195 params.push_back(text);
3196 DoOneToMany(user->nick,"MODE",params);
3200 chanrec* c = (chanrec*)dest;
3201 std::deque<std::string> params;
3202 params.push_back(c->name);
3203 params.push_back(text);
3204 DoOneToMany(user->nick,"MODE",params);
3209 virtual void ProtoSendMode(void* opaque, int target_type, void* target, std::string modeline)
3211 TreeSocket* s = (TreeSocket*)opaque;
3214 if (target_type == TYPE_USER)
3216 userrec* u = (userrec*)target;
3217 s->WriteLine(":"+Srv->GetServerName()+" FMODE "+u->nick+" "+modeline);
3221 chanrec* c = (chanrec*)target;
3222 s->WriteLine(":"+Srv->GetServerName()+" FMODE "+c->name+" "+modeline);
3227 virtual void ProtoSendMetaData(void* opaque, int target_type, void* target, std::string extname, std::string extdata)
3229 TreeSocket* s = (TreeSocket*)opaque;
3232 if (target_type == TYPE_USER)
3234 userrec* u = (userrec*)target;
3235 s->WriteLine(":"+Srv->GetServerName()+" METADATA "+u->nick+" "+extname+" :"+extdata);
3239 chanrec* c = (chanrec*)target;
3240 s->WriteLine(":"+Srv->GetServerName()+" METADATA "+c->name+" "+extname+" :"+extdata);
3245 virtual ~ModuleSpanningTree()
3249 virtual Version GetVersion()
3251 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
3254 void Implements(char* List)
3256 List[I_OnPreCommand] = List[I_OnGetServerDescription] = List[I_OnUserInvite] = List[I_OnPostLocalTopicChange] = 1;
3257 List[I_OnWallops] = List[I_OnUserNotice] = List[I_OnUserMessage] = List[I_OnBackgroundTimer] = 1;
3258 List[I_OnUserJoin] = List[I_OnChangeHost] = List[I_OnChangeName] = List[I_OnUserPart] = List[I_OnUserConnect] = 1;
3259 List[I_OnUserQuit] = List[I_OnUserPostNick] = List[I_OnUserKick] = List[I_OnRemoteKill] = List[I_OnRehash] = 1;
3260 List[I_OnOper] = List[I_OnAddGLine] = List[I_OnAddZLine] = List[I_OnAddQLine] = List[I_OnAddELine] = 1;
3261 List[I_OnDelGLine] = List[I_OnDelZLine] = List[I_OnDelQLine] = List[I_OnDelELine] = List[I_ProtoSendMode] = List[I_OnMode] = 1;
3262 List[I_OnStats] = List[I_ProtoSendMetaData] = 1;
3265 /* It is IMPORTANT that m_spanningtree is the last module in the chain
3266 * so that any activity it sees is FINAL, e.g. we arent going to send out
3267 * a NICK message before m_cloaking has finished putting the +x on the user,
3269 * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
3270 * the module call queue.
3272 Priority Prioritize()
3274 return PRIORITY_LAST;
3279 class ModuleSpanningTreeFactory : public ModuleFactory
3282 ModuleSpanningTreeFactory()
3286 ~ModuleSpanningTreeFactory()
3290 virtual Module * CreateModule(Server* Me)
3292 TreeProtocolModule = new ModuleSpanningTree(Me);
3293 return TreeProtocolModule;
3299 extern "C" void * init_module( void )
3301 return new ModuleSpanningTreeFactory;