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 /* Flatten links and /MAP for non-opers */
129 /* Hide U-Lined servers in /MAP and /LINKS */
132 /* Imported from xline.cpp for use during netburst */
133 extern std::vector<KLine> klines;
134 extern std::vector<GLine> glines;
135 extern std::vector<ZLine> zlines;
136 extern std::vector<QLine> qlines;
137 extern std::vector<ELine> elines;
138 extern std::vector<KLine> pklines;
139 extern std::vector<GLine> pglines;
140 extern std::vector<ZLine> pzlines;
141 extern std::vector<QLine> pqlines;
142 extern std::vector<ELine> pelines;
144 /* Each server in the tree is represented by one class of
145 * type TreeServer. A locally connected TreeServer can
146 * have a class of type TreeSocket associated with it, for
147 * remote servers, the TreeSocket entry will be NULL.
148 * Each server also maintains a pointer to its parent
149 * (NULL if this server is ours, at the top of the tree)
150 * and a pointer to its "Route" (see the comments in the
151 * constructors below), and also a dynamic list of pointers
152 * to its children which can be iterated recursively
153 * if required. Creating or deleting objects of type
154 * TreeServer automatically maintains the hash_map of
155 * TreeServer items, deleting and inserting them as they
156 * are created and destroyed.
161 TreeServer* Parent; /* Parent entry */
162 TreeServer* Route; /* Route entry */
163 std::vector<TreeServer*> Children; /* List of child objects */
164 std::string ServerName; /* Server's name */
165 std::string ServerDesc; /* Server's description */
166 std::string VersionString; /* Version string or empty string */
167 int UserCount; /* Not used in this version */
168 int OperCount; /* Not used in this version */
169 TreeSocket* Socket; /* For directly connected servers this points at the socket object */
170 time_t NextPing; /* After this time, the server should be PINGed*/
171 bool LastPingWasGood; /* True if the server responded to the last PING with a PONG */
175 /* We don't use this constructor. Its a dummy, and won't cause any insertion
176 * of the TreeServer into the hash_map. See below for the two we DO use.
184 UserCount = OperCount = 0;
185 VersionString = Srv->GetVersion();
188 /* We use this constructor only to create the 'root' item, TreeRoot, which
189 * represents our own server. Therefore, it has no route, no parent, and
190 * no socket associated with it. Its version string is our own local version.
192 TreeServer(std::string Name, std::string Desc) : ServerName(Name), ServerDesc(Desc)
196 UserCount = OperCount = 0;
197 VersionString = Srv->GetVersion();
199 Socket = NULL; /* Fix by brain */
203 /* When we create a new server, we call this constructor to initialize it.
204 * This constructor initializes the server's Route and Parent, and sets up
205 * its ping counters so that it will be pinged one minute from now.
207 TreeServer(std::string Name, std::string Desc, TreeServer* Above, TreeSocket* Sock) : Parent(Above), ServerName(Name), ServerDesc(Desc), Socket(Sock)
210 UserCount = OperCount = 0;
211 this->SetNextPingTime(time(NULL) + 120);
214 /* find the 'route' for this server (e.g. the one directly connected
215 * to the local server, which we can use to reach it)
217 * In the following example, consider we have just added a TreeServer
218 * class for server G on our network, of which we are server A.
219 * To route traffic to G (marked with a *) we must send the data to
220 * B (marked with a +) so this algorithm initializes the 'Route'
221 * value to point at whichever server traffic must be routed through
222 * to get here. If we were to try this algorithm with server B,
223 * the Route pointer would point at its own object ('this').
233 * We only run this algorithm when a server is created, as
234 * the routes remain constant while ever the server exists, and
235 * do not need to be re-calculated.
239 if (Route == TreeRoot)
245 while (this->Route->GetParent() != TreeRoot)
247 this->Route = Route->GetParent();
251 /* Because recursive code is slow and takes a lot of resources,
252 * we store two representations of the server tree. The first
253 * is a recursive structure where each server references its
254 * children and its parent, which is used for netbursts and
255 * netsplits to dump the whole dataset to the other server,
256 * and the second is used for very fast lookups when routing
257 * messages and is instead a hash_map, where each item can
258 * be referenced by its server name. The AddHashEntry()
259 * call below automatically inserts each TreeServer class
260 * into the hash_map as it is created. There is a similar
261 * maintainance call in the destructor to tidy up deleted
265 this->AddHashEntry();
268 /* This method is used to add the structure to the
269 * hash_map for linear searches. It is only called
270 * by the constructors.
274 server_hash::iterator iter;
275 iter = serverlist.find(this->ServerName);
276 if (iter == serverlist.end())
277 serverlist[this->ServerName] = this;
280 /* This method removes the reference to this object
281 * from the hash_map which is used for linear searches.
282 * It is only called by the default destructor.
286 server_hash::iterator iter;
287 iter = serverlist.find(this->ServerName);
288 if (iter != serverlist.end())
289 serverlist.erase(iter);
292 /* These accessors etc should be pretty self-
296 TreeServer* GetRoute()
301 std::string GetName()
306 std::string GetDesc()
311 std::string GetVersion()
313 return VersionString;
316 void SetNextPingTime(time_t t)
319 LastPingWasGood = false;
322 time_t NextPingTime()
327 bool AnsweredLastPing()
329 return LastPingWasGood;
334 LastPingWasGood = true;
357 TreeSocket* GetSocket()
362 TreeServer* GetParent()
367 void SetVersion(std::string Version)
369 VersionString = Version;
372 unsigned int ChildCount()
374 return Children.size();
377 TreeServer* GetChild(unsigned int n)
379 if (n < Children.size())
381 /* Make sure they cant request
382 * an out-of-range object. After
383 * all we know what these programmer
384 * types are like *grin*.
394 void AddChild(TreeServer* Child)
396 Children.push_back(Child);
399 bool DelChild(TreeServer* Child)
401 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
412 /* Removes child nodes of this node, and of that node, etc etc.
413 * This is used during netsplits to automatically tidy up the
414 * server tree. It is slow, we don't use it for much else.
418 bool stillchildren = true;
419 while (stillchildren)
421 stillchildren = false;
422 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
424 TreeServer* s = (TreeServer*)*a;
428 stillchildren = true;
437 /* We'd better tidy up after ourselves, eh? */
438 this->DelHashEntry();
442 /* The Link class might as well be a struct,
443 * but this is C++ and we don't believe in structs (!).
444 * It holds the entire information of one <link>
445 * tag from the main config file. We maintain a list
446 * of them, and populate the list on rehash/load.
455 std::string SendPass;
456 std::string RecvPass;
457 unsigned long AutoConnect;
458 time_t NextConnectTime;
459 std::string EncryptionKey;
460 bool HiddenFromStats;
463 /* The usual stuff for inspircd modules,
464 * plus the vector of Link classes which we
465 * use to store the <link> tags from the config
469 std::vector<Link> LinkBlocks;
471 /* Yay for fast searches!
472 * This is hundreds of times faster than recursion
473 * or even scanning a linked list, especially when
474 * there are more than a few servers to deal with.
477 TreeServer* FindServer(std::string ServerName)
479 server_hash::iterator iter;
480 iter = serverlist.find(ServerName);
481 if (iter != serverlist.end())
491 /* Returns the locally connected server we must route a
492 * message through to reach server 'ServerName'. This
493 * only applies to one-to-one and not one-to-many routing.
494 * See the comments for the constructor of TreeServer
497 TreeServer* BestRouteTo(std::string ServerName)
499 if (ServerName.c_str() == TreeRoot->GetName())
501 TreeServer* Found = FindServer(ServerName);
504 return Found->GetRoute();
512 /* Find the first server matching a given glob mask.
513 * Theres no find-using-glob method of hash_map [awwww :-(]
514 * so instead, we iterate over the list using an iterator
515 * and match each one until we get a hit. Yes its slow,
518 TreeServer* FindServerMask(std::string ServerName)
520 for (server_hash::iterator i = serverlist.begin(); i != serverlist.end(); i++)
522 if (Srv->MatchText(i->first,ServerName))
528 /* A convenient wrapper that returns true if a server exists */
529 bool IsServer(std::string ServerName)
531 return (FindServer(ServerName) != NULL);
534 /* Every SERVER connection inbound or outbound is represented by
535 * an object of type TreeSocket.
536 * TreeSockets, being inherited from InspSocket, can be tied into
537 * the core socket engine, and we cn therefore receive activity events
538 * for them, just like activex objects on speed. (yes really, that
539 * is a technical term!) Each of these which relates to a locally
540 * connected server is assocated with it, by hooking it onto a
541 * TreeSocket class using its constructor. In this way, we can
542 * maintain a list of servers, some of which are directly connected,
543 * some of which are not.
546 class TreeSocket : public InspSocket
549 std::string in_buffer;
550 ServerState LinkState;
551 std::string InboundServerName;
552 std::string InboundDescription;
554 int num_lost_servers;
556 bool LastPingWasGood;
560 unsigned int keylength;
564 /* Because most of the I/O gubbins are encapsulated within
565 * InspSocket, we just call the superclass constructor for
566 * most of the action, and append a few of our own values
569 TreeSocket(std::string host, int port, bool listening, unsigned long maxtime)
570 : InspSocket(host, port, listening, maxtime)
573 this->LinkState = LISTENER;
575 this->ctx_out = NULL;
578 TreeSocket(std::string host, int port, bool listening, unsigned long maxtime, std::string ServerName)
579 : InspSocket(host, port, listening, maxtime)
582 this->LinkState = CONNECTING;
584 this->ctx_out = NULL;
587 /* When a listening socket gives us a new file descriptor,
588 * we must associate it with a socket without creating a new
589 * connection. This constructor is used for this purpose.
591 TreeSocket(int newfd, char* ip)
592 : InspSocket(newfd, ip)
594 this->LinkState = WAIT_AUTH_1;
596 this->ctx_out = NULL;
597 this->SendCapabilities();
608 void InitAES(std::string key,std::string SName)
615 log(DEBUG,"Initialized AES key %s",key.c_str());
616 // key must be 16, 24, 32 etc bytes (multiple of 8)
617 keylength = key.length();
618 if (!(keylength == 16 || keylength == 24 || keylength == 32))
620 WriteOpers("*** \2ERROR\2: Key length for encryptionkey is not 16, 24 or 32 bytes in length!");
621 log(DEBUG,"Key length not 16, 24 or 32 characters!");
625 WriteOpers("*** \2AES\2: Initialized %d bit encryption to server %s",keylength*8,SName.c_str());
626 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\
627 \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 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\
629 \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);
633 /* When an outbound connection finishes connecting, we receive
634 * this event, and must send our SERVER string to the other
635 * side. If the other side is happy, as outlined in the server
636 * to server docs on the inspircd.org site, the other side
637 * will then send back its own server string.
639 virtual bool OnConnected()
641 if (this->LinkState == CONNECTING)
643 /* we do not need to change state here. */
644 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
646 if (x->Name == this->myhost)
648 Srv->SendOpers("*** Connection to \2"+myhost+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] established.");
649 this->SendCapabilities();
650 if (x->EncryptionKey != "")
652 if (!(x->EncryptionKey.length() == 16 || x->EncryptionKey.length() == 24 || x->EncryptionKey.length() == 32))
654 WriteOpers("\2WARNING\2: Your encryption key is NOT 16, 24 or 32 characters in length, encryption will \2NOT\2 be enabled.");
658 this->WriteLine("AES "+Srv->GetServerName());
659 this->InitAES(x->EncryptionKey,x->Name);
662 /* found who we're supposed to be connecting to, send the neccessary gubbins. */
663 this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
668 /* There is a (remote) chance that between the /CONNECT and the connection
669 * being accepted, some muppet has removed the <link> block and rehashed.
670 * If that happens the connection hangs here until it's closed. Unlikely
671 * and rather harmless.
673 Srv->SendOpers("*** Connection to \2"+myhost+"\2 lost link tag(!)");
677 virtual void OnError(InspSocketError e)
679 /* We don't handle this method, because all our
680 * dirty work is done in OnClose() (see below)
681 * which is still called on error conditions too.
685 virtual int OnDisconnect()
687 /* For the same reason as above, we don't
688 * handle OnDisconnect()
693 /* Recursively send the server tree with distances as hops.
694 * This is used during network burst to inform the other server
695 * (and any of ITS servers too) of what servers we know about.
696 * If at any point any of these servers already exist on the other
697 * end, our connection may be terminated. The hopcounts given
698 * by this function are relative, this doesn't matter so long as
699 * they are all >1, as all the remote servers re-calculate them
700 * to be relative too, with themselves as hop 0.
702 void SendServers(TreeServer* Current, TreeServer* s, int hops)
705 for (unsigned int q = 0; q < Current->ChildCount(); q++)
707 TreeServer* recursive_server = Current->GetChild(q);
708 if (recursive_server != s)
710 snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str());
711 this->WriteLine(command);
712 this->WriteLine(":"+recursive_server->GetName()+" VERSION :"+recursive_server->GetVersion());
713 /* down to next level */
714 this->SendServers(recursive_server, s, hops+1);
719 std::string MyCapabilities()
721 ServerConfig* Config = Srv->GetConfig();
722 std::vector<std::string> modlist;
723 std::string capabilities = "";
725 for (int i = 0; i <= MODCOUNT; i++)
727 if ((modules[i]->GetVersion().Flags & VF_STATIC) || (modules[i]->GetVersion().Flags & VF_COMMON))
728 modlist.push_back(Config->module_names[i]);
730 sort(modlist.begin(),modlist.end());
731 for (unsigned int i = 0; i < modlist.size(); i++)
734 capabilities = capabilities + ",";
735 capabilities = capabilities + modlist[i];
740 void SendCapabilities()
742 this->WriteLine("CAPAB "+MyCapabilities());
745 bool Capab(std::deque<std::string> params)
747 if (params.size() != 1)
749 this->WriteLine("ERROR :Invalid number of parameters for CAPAB");
752 if (params[0] != this->MyCapabilities())
754 std::string quitserver = this->myhost;
755 if (this->InboundServerName != "")
757 quitserver = this->InboundServerName;
759 WriteOpers("*** \2ERROR\2: Server '%s' does not have the same set of modules loaded, cannot link!",quitserver.c_str());
760 WriteOpers("*** Our networked module set is: '%s'",this->MyCapabilities().c_str());
761 WriteOpers("*** Other server's networked module set is: '%s'",params[0].c_str());
762 WriteOpers("*** These lists must match exactly on both servers. Please correct these errors, and try again.");
763 this->WriteLine("ERROR :CAPAB mismatch; My capabilities: '"+this->MyCapabilities()+"'");
769 /* This function forces this server to quit, removing this server
770 * and any users on it (and servers and users below that, etc etc).
771 * It's very slow and pretty clunky, but luckily unless your network
772 * is having a REAL bad hair day, this function shouldnt be called
773 * too many times a month ;-)
775 void SquitServer(TreeServer* Current, CullList* Goners)
777 /* recursively squit the servers attached to 'Current'.
778 * We're going backwards so we don't remove users
779 * while we still need them ;)
781 for (unsigned int q = 0; q < Current->ChildCount(); q++)
783 TreeServer* recursive_server = Current->GetChild(q);
784 this->SquitServer(recursive_server,Goners);
786 /* Now we've whacked the kids, whack self */
788 for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
790 if (!strcasecmp(u->second->server,Current->GetName().c_str()))
792 std::string qreason = Current->GetName()+" "+std::string(Srv->GetServerName());
793 Goners->AddItem(u->second,qreason);
799 /* This is a wrapper function for SquitServer above, which
800 * does some validation first and passes on the SQUIT to all
801 * other remaining servers.
803 void Squit(TreeServer* Current,std::string reason)
805 if ((Current) && (Current != TreeRoot))
807 std::deque<std::string> params;
808 params.push_back(Current->GetName());
809 params.push_back(":"+reason);
810 DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
811 if (Current->GetParent() == TreeRoot)
813 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split: "+reason);
817 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
819 num_lost_servers = 0;
821 CullList* Goners = new CullList();
822 SquitServer(Current, Goners);
825 Current->GetParent()->DelChild(Current);
828 WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
832 log(DEFAULT,"Squit from unknown server");
837 bool ForceMode(std::string source, std::deque<std::string> params)
839 userrec* who = new userrec;
840 who->fd = FD_MAGIC_NUMBER;
841 if (params.size() < 2)
844 for (unsigned int q = 0; q < params.size(); q++)
846 modelist[q] = (char*)params[q].c_str();
848 Srv->SendMode(modelist,params.size(),who);
849 DoOneToAllButSender(source,"FMODE",params,source);
855 bool ForceTopic(std::string source, std::deque<std::string> params)
857 if (params.size() != 4)
859 std::string channel = params[0];
860 time_t ts = atoi(params[1].c_str());
861 std::string setby = params[2];
862 std::string topic = params[3];
863 std::string nsource = source;
865 chanrec* c = Srv->FindChannel(channel);
868 if ((ts >= c->topicset) || (!*c->topic))
870 std::string oldtopic = c->topic;
871 strlcpy(c->topic,topic.c_str(),MAXTOPIC);
872 strlcpy(c->setby,setby.c_str(),NICKMAX);
874 /* if the topic text is the same as the current topic,
875 * dont bother to send the TOPIC command out, just silently
876 * update the set time and set nick.
878 if (oldtopic != topic)
880 userrec* user = Srv->FindNick(source);
883 WriteChannelWithServ((char*)source.c_str(), c, "TOPIC %s :%s", c->name, c->topic);
887 WriteChannel(c, user, "TOPIC %s :%s", c->name, c->topic);
888 nsource = user->server;
895 /* all done, send it on its way */
896 params[3] = ":" + params[3];
897 DoOneToAllButSender(source,"FTOPIC",params,nsource);
902 /* FJOIN, similar to unreal SJOIN */
903 bool ForceJoin(std::string source, std::deque<std::string> params)
905 if (params.size() < 3)
909 char modestring[MAXBUF];
910 char* mode_users[127];
911 mode_users[0] = first;
912 mode_users[1] = modestring;
913 strcpy(mode_users[1],"+");
914 unsigned int modectr = 2;
917 std::string channel = params[0];
918 time_t TS = atoi(params[1].c_str());
921 chanrec* chan = Srv->FindChannel(channel);
926 strlcpy(mode_users[0],channel.c_str(),MAXBUF);
928 /* default is a high value, which if we dont have this
929 * channel will let the other side apply their modes.
931 time_t ourTS = time(NULL)+600;
932 chanrec* us = Srv->FindChannel(channel);
938 log(DEBUG,"FJOIN detected, our TS=%lu, their TS=%lu",ourTS,TS);
940 /* do this first, so our mode reversals are correctly received by other servers
941 * if there is a TS collision.
943 DoOneToAllButSender(source,"FJOIN",params,source);
945 for (unsigned int usernum = 2; usernum < params.size(); usernum++)
947 /* process one channel at a time, applying modes. */
948 char* usr = (char*)params[usernum].c_str();
949 /* Safety check just to make sure someones not sent us an FJOIN full of spaces
950 * (is this even possible?) */
953 char permissions = *usr;
958 mode_users[modectr++] = usr;
959 strlcat(modestring,"o",MAXBUF);
963 mode_users[modectr++] = usr;
964 strlcat(modestring,"h",MAXBUF);
968 mode_users[modectr++] = usr;
969 strlcat(modestring,"v",MAXBUF);
972 who = Srv->FindNick(usr);
975 Srv->JoinUserToChannel(who,channel,key);
976 if (modectr >= (MAXMODES-1))
978 /* theres a mode for this user. push them onto the mode queue, and flush it
979 * if there are more than MAXMODES to go.
981 if ((ourTS >= TS) || (Srv->IsUlined(who->server)))
983 /* We also always let u-lined clients win, no matter what the TS value */
984 log(DEBUG,"Our our channel newer than theirs, accepting their modes");
985 Srv->SendMode(mode_users,modectr,who);
989 log(DEBUG,"Their channel newer than ours, bouncing their modes");
991 std::deque<std::string> params;
992 /* modes are now being UNSET... */
993 *mode_users[1] = '-';
994 for (unsigned int x = 0; x < modectr; x++)
996 params.push_back(mode_users[x]);
998 // tell everyone to bounce the modes. bad modes, bad!
999 DoOneToMany(Srv->GetServerName(),"FMODE",params);
1001 strcpy(mode_users[1],"+");
1007 /* there werent enough modes built up to flush it during FJOIN,
1008 * or, there are a number left over. flush them out.
1010 if ((modectr > 2) && (who))
1014 log(DEBUG,"Our our channel newer than theirs, accepting their modes");
1015 Srv->SendMode(mode_users,modectr,who);
1019 log(DEBUG,"Their channel newer than ours, bouncing their modes");
1020 std::deque<std::string> params;
1021 *mode_users[1] = '-';
1022 for (unsigned int x = 0; x < modectr; x++)
1024 params.push_back(mode_users[x]);
1026 DoOneToMany(Srv->GetServerName(),"FMODE",params);
1033 bool IntroduceClient(std::string source, std::deque<std::string> params)
1035 if (params.size() < 8)
1037 // NICK age nick host dhost ident +modes ip :gecos
1039 std::string nick = params[1];
1040 std::string host = params[2];
1041 std::string dhost = params[3];
1042 std::string ident = params[4];
1043 time_t age = atoi(params[0].c_str());
1044 std::string modes = params[5];
1045 while (*(modes.c_str()) == '+')
1047 char* m = (char*)modes.c_str();
1051 std::string ip = params[6];
1052 std::string gecos = params[7];
1053 char* tempnick = (char*)nick.c_str();
1054 log(DEBUG,"Introduce client %s!%s@%s",tempnick,ident.c_str(),host.c_str());
1056 user_hash::iterator iter;
1057 iter = clientlist.find(tempnick);
1058 if (iter != clientlist.end())
1061 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);
1062 this->WriteLine(":"+Srv->GetServerName()+" KILL "+tempnick+" :Nickname collision");
1066 clientlist[tempnick] = new userrec();
1067 clientlist[tempnick]->fd = FD_MAGIC_NUMBER;
1068 strlcpy(clientlist[tempnick]->nick, tempnick,NICKMAX);
1069 strlcpy(clientlist[tempnick]->host, host.c_str(),160);
1070 strlcpy(clientlist[tempnick]->dhost, dhost.c_str(),160);
1071 clientlist[tempnick]->server = (char*)FindServerNamePtr(source.c_str());
1072 strlcpy(clientlist[tempnick]->ident, ident.c_str(),IDENTMAX);
1073 strlcpy(clientlist[tempnick]->fullname, gecos.c_str(),MAXGECOS);
1074 clientlist[tempnick]->registered = 7;
1075 clientlist[tempnick]->signon = age;
1076 strlcpy(clientlist[tempnick]->modes, modes.c_str(),53);
1077 inet_aton(ip.c_str(),&clientlist[tempnick]->ip4);
1082 for (int i = 0; i < MAXCHANS; i++)
1083 clientlist[tempnick]->chans.push_back(a);
1085 if (!this->bursting)
1087 WriteOpers("*** Client connecting at %s: %s!%s@%s [%s]",clientlist[tempnick]->server,clientlist[tempnick]->nick,clientlist[tempnick]->ident,clientlist[tempnick]->host,(char*)inet_ntoa(clientlist[tempnick]->ip4));
1089 params[7] = ":" + params[7];
1090 DoOneToAllButSender(source,"NICK",params,source);
1092 // Increment the Source Servers User Count..
1093 TreeServer* SourceServer = FindServer(source);
1095 SourceServer->AddUserCount();
1101 /* Send one or more FJOINs for a channel of users.
1102 * If the length of a single line is more than 480-NICKMAX
1103 * in length, it is split over multiple lines.
1105 void SendFJoins(TreeServer* Current, chanrec* c)
1107 log(DEBUG,"Sending FJOINs to other server for %s",c->name);
1109 snprintf(list,MAXBUF,":%s FJOIN %s %lu",Srv->GetServerName().c_str(),c->name,(unsigned long)c->age);
1110 std::map<char*,char*> *ulist = c->GetUsers();
1111 for (std::map<char*,char*>::iterator i = ulist->begin(); i != ulist->end(); i++)
1113 char* o = i->second;
1114 userrec* otheruser = (userrec*)o;
1115 strlcat(list," ",MAXBUF);
1116 strlcat(list,cmode(otheruser,c),MAXBUF);
1117 strlcat(list,otheruser->nick,MAXBUF);
1118 if (strlen(list)>(480-NICKMAX))
1120 log(DEBUG,"FJOIN line wrapped");
1121 this->WriteLine(list);
1122 snprintf(list,MAXBUF,":%s FJOIN %s %lu",Srv->GetServerName().c_str(),c->name,(unsigned long)c->age);
1125 if (list[strlen(list)-1] != ':')
1127 log(DEBUG,"Final FJOIN line");
1128 this->WriteLine(list);
1132 /* Send G, Q, Z and E lines */
1133 void SendXLines(TreeServer* Current)
1136 /* Yes, these arent too nice looking, but they get the job done */
1137 for (std::vector<ZLine>::iterator i = zlines.begin(); i != zlines.end(); i++)
1139 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);
1140 this->WriteLine(data);
1142 for (std::vector<QLine>::iterator i = qlines.begin(); i != qlines.end(); i++)
1144 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);
1145 this->WriteLine(data);
1147 for (std::vector<GLine>::iterator i = glines.begin(); i != glines.end(); i++)
1149 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);
1150 this->WriteLine(data);
1152 for (std::vector<ELine>::iterator i = elines.begin(); i != elines.end(); i++)
1154 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);
1155 this->WriteLine(data);
1157 for (std::vector<ZLine>::iterator i = pzlines.begin(); i != pzlines.end(); i++)
1159 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);
1160 this->WriteLine(data);
1162 for (std::vector<QLine>::iterator i = pqlines.begin(); i != pqlines.end(); i++)
1164 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);
1165 this->WriteLine(data);
1167 for (std::vector<GLine>::iterator i = pglines.begin(); i != pglines.end(); i++)
1169 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);
1170 this->WriteLine(data);
1172 for (std::vector<ELine>::iterator i = pelines.begin(); i != pelines.end(); i++)
1174 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);
1175 this->WriteLine(data);
1179 /* Send channel modes and topics */
1180 void SendChannelModes(TreeServer* Current)
1183 std::deque<std::string> list;
1184 for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
1186 SendFJoins(Current, c->second);
1187 snprintf(data,MAXBUF,":%s FMODE %s +%s",Srv->GetServerName().c_str(),c->second->name,chanmodes(c->second,true));
1188 this->WriteLine(data);
1189 if (*c->second->topic)
1191 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);
1192 this->WriteLine(data);
1194 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
1196 snprintf(data,MAXBUF,":%s FMODE %s +b %s",Srv->GetServerName().c_str(),c->second->name,b->data);
1197 this->WriteLine(data);
1199 FOREACH_MOD(I_OnSyncChannel,OnSyncChannel(c->second,(Module*)TreeProtocolModule,(void*)this));
1201 c->second->GetExtList(list);
1202 for (unsigned int j = 0; j < list.size(); j++)
1204 FOREACH_MOD(I_OnSyncChannelMetaData,OnSyncChannelMetaData(c->second,(Module*)TreeProtocolModule,(void*)this,list[j]));
1209 /* send all users and their oper state/modes */
1210 void SendUsers(TreeServer* Current)
1213 std::deque<std::string> list;
1214 for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
1216 if (u->second->registered == 7)
1218 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,(char*)inet_ntoa(u->second->ip4),u->second->fullname);
1219 this->WriteLine(data);
1220 if (strchr(u->second->modes,'o'))
1222 this->WriteLine(":"+std::string(u->second->nick)+" OPERTYPE "+std::string(u->second->oper));
1224 FOREACH_MOD(I_OnSyncUser,OnSyncUser(u->second,(Module*)TreeProtocolModule,(void*)this));
1226 u->second->GetExtList(list);
1227 for (unsigned int j = 0; j < list.size(); j++)
1229 FOREACH_MOD(I_OnSyncUserMetaData,OnSyncUserMetaData(u->second,(Module*)TreeProtocolModule,(void*)this,list[j]));
1235 /* This function is called when we want to send a netburst to a local
1236 * server. There is a set order we must do this, because for example
1237 * users require their servers to exist, and channels require their
1238 * users to exist. You get the idea.
1240 void DoBurst(TreeServer* s)
1242 Srv->SendOpers("*** Bursting to \2"+s->GetName()+"\2.");
1243 this->WriteLine("BURST");
1244 /* send our version string */
1245 this->WriteLine(":"+Srv->GetServerName()+" VERSION :"+Srv->GetVersion());
1246 /* Send server tree */
1247 this->SendServers(TreeRoot,s,1);
1248 /* Send users and their oper status */
1250 /* Send everything else (channel modes, xlines etc) */
1251 this->SendChannelModes(s);
1252 this->SendXLines(s);
1253 FOREACH_MOD(I_OnSyncOtherMetaData,OnSyncOtherMetaData((Module*)TreeProtocolModule,(void*)this));
1254 this->WriteLine("ENDBURST");
1255 Srv->SendOpers("*** Finished bursting to \2"+s->GetName()+"\2.");
1258 /* This function is called when we receive data from a remote
1259 * server. We buffer the data in a std::string (it doesnt stay
1260 * there for long), reading using InspSocket::Read() which can
1261 * read up to 16 kilobytes in one operation.
1263 * IF THIS FUNCTION RETURNS FALSE, THE CORE CLOSES AND DELETES
1264 * THE SOCKET OBJECT FOR US.
1266 virtual bool OnDataReady()
1268 char* data = this->Read();
1269 /* Check that the data read is a valid pointer and it has some content */
1272 this->in_buffer += data;
1273 /* While there is at least one new line in the buffer,
1274 * do something useful (we hope!) with it.
1276 while (in_buffer.find("\n") != std::string::npos)
1278 char* line = (char*)in_buffer.c_str();
1279 std::string ret = "";
1280 while ((*line != '\n') && (strlen(line)))
1282 if ((*line != '\r') && (*line != '\n'))
1286 if ((*line == '\n') || (*line == '\r'))
1289 /* Process this one, abort if it
1290 * didnt return true.
1296 memset(result,0,1024);
1298 log(DEBUG,"Original string '%s'",ret.c_str());
1299 /* ERROR + CAPAB is still allowed unencryped */
1300 if ((ret.substr(0,7) != "ERROR :") && (ret.substr(0,6) != "CAPAB "))
1302 int nbytes = from64tobits(out, ret.c_str(), 1024);
1303 if ((nbytes > 0) && (nbytes < 1024))
1305 log(DEBUG,"m_spanningtree: decrypt %d bytes",nbytes);
1306 ctx_in->Decrypt(out, result, nbytes, 1);
1307 for (int t = 0; t < nbytes; t++)
1308 if (result[t] == '\7') result[t] = 0;
1313 if (!this->ProcessLine(ret))
1319 /* EAGAIN returns an empty but non-NULL string, so this
1320 * evaluates to TRUE for EAGAIN but to FALSE for EOF.
1322 return (data != NULL);
1325 int WriteLine(std::string line)
1327 log(DEBUG,"OUT: %s",line.c_str());
1330 log(DEBUG,"AES context");
1332 char result64[10240];
1333 if (this->keylength)
1335 while (line.length() % this->keylength != 0)
1337 // pad it to be a multiple of the key length
1341 unsigned int ll = line.length();
1342 log(DEBUG,"Plaintext line with padding = %d chars",ll);
1343 ctx_out->Encrypt(line.c_str(), result, ll, 1);
1344 log(DEBUG,"Encrypted.");
1345 to64frombits((unsigned char*)result64,(unsigned char*)result,ll);
1347 log(DEBUG,"Encrypted: %s",line.c_str());
1348 //int from64tobits(char *out, const char *in, int maxlen);
1350 return this->Write(line + "\r\n");
1353 /* Handle ERROR command */
1354 bool Error(std::deque<std::string> params)
1356 if (params.size() < 1)
1358 std::string Errmsg = params[0];
1359 std::string SName = myhost;
1360 if (InboundServerName != "")
1362 SName = InboundServerName;
1364 Srv->SendOpers("*** ERROR from "+SName+": "+Errmsg);
1365 /* we will return false to cause the socket to close.
1370 /* Because the core won't let users or even SERVERS set +o,
1371 * we use the OPERTYPE command to do this.
1373 bool OperType(std::string prefix, std::deque<std::string> ¶ms)
1375 if (params.size() != 1)
1377 std::string opertype = params[0];
1378 userrec* u = Srv->FindNick(prefix);
1381 strlcpy(u->oper,opertype.c_str(),NICKMAX);
1382 if (!strchr(u->modes,'o'))
1384 strcat(u->modes,"o");
1386 DoOneToAllButSender(u->nick,"OPERTYPE",params,u->server);
1391 /* Because Andy insists that services-compatible servers must
1392 * implement SVSNICK and SVSJOIN, that's exactly what we do :p
1394 bool ForceNick(std::string prefix, std::deque<std::string> ¶ms)
1396 if (params.size() < 3)
1398 userrec* u = Srv->FindNick(params[0]);
1401 Srv->ChangeUserNick(u,params[1]);
1402 u->age = atoi(params[2].c_str());
1403 DoOneToAllButSender(prefix,"SVSNICK",params,prefix);
1408 bool ServiceJoin(std::string prefix, std::deque<std::string> ¶ms)
1410 if (params.size() < 2)
1412 userrec* u = Srv->FindNick(params[0]);
1415 Srv->JoinUserToChannel(u,params[1],"");
1416 DoOneToAllButSender(prefix,"SVSJOIN",params,prefix);
1421 bool RemoteRehash(std::string prefix, std::deque<std::string> ¶ms)
1423 if (params.size() < 1)
1425 std::string servermask = params[0];
1426 if (Srv->MatchText(Srv->GetServerName(),servermask))
1428 Srv->SendOpers("*** Remote rehash initiated from server \002"+prefix+"\002.");
1429 Srv->RehashServer();
1430 ReadConfiguration(false);
1432 DoOneToAllButSender(prefix,"REHASH",params,prefix);
1436 bool RemoteKill(std::string prefix, std::deque<std::string> ¶ms)
1438 if (params.size() != 2)
1440 std::string nick = params[0];
1441 userrec* u = Srv->FindNick(prefix);
1442 userrec* who = Srv->FindNick(nick);
1445 /* Prepend kill source, if we don't have one */
1446 std::string sourceserv = prefix;
1449 sourceserv = u->server;
1451 if (*(params[1].c_str()) != '[')
1453 params[1] = "[" + sourceserv + "] Killed (" + params[1] +")";
1455 std::string reason = params[1];
1456 params[1] = ":" + params[1];
1457 DoOneToAllButSender(prefix,"KILL",params,sourceserv);
1458 Srv->QuitUser(who,reason);
1463 bool LocalPong(std::string prefix, std::deque<std::string> ¶ms)
1465 if (params.size() < 1)
1467 TreeServer* ServerSource = FindServer(prefix);
1470 ServerSource->SetPingFlag();
1475 bool MetaData(std::string prefix, std::deque<std::string> ¶ms)
1477 if (params.size() < 3)
1479 TreeServer* ServerSource = FindServer(prefix);
1482 if (params[0] == "*")
1484 FOREACH_MOD(I_OnDecodeMetaData,OnDecodeMetaData(TYPE_OTHER,NULL,params[1],params[2]));
1486 else if (*(params[0].c_str()) == '#')
1488 chanrec* c = Srv->FindChannel(params[0]);
1491 FOREACH_MOD(I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]));
1494 else if (*(params[0].c_str()) != '#')
1496 userrec* u = Srv->FindNick(params[0]);
1499 FOREACH_MOD(I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2]));
1503 params[2] = ":" + params[2];
1504 DoOneToAllButSender(prefix,"METADATA",params,prefix);
1508 bool ServerVersion(std::string prefix, std::deque<std::string> ¶ms)
1510 if (params.size() < 1)
1512 TreeServer* ServerSource = FindServer(prefix);
1515 ServerSource->SetVersion(params[0]);
1517 params[0] = ":" + params[0];
1518 DoOneToAllButSender(prefix,"VERSION",params,prefix);
1522 bool ChangeHost(std::string prefix, std::deque<std::string> ¶ms)
1524 if (params.size() < 1)
1526 userrec* u = Srv->FindNick(prefix);
1529 Srv->ChangeHost(u,params[0]);
1530 DoOneToAllButSender(prefix,"FHOST",params,u->server);
1535 bool AddLine(std::string prefix, std::deque<std::string> ¶ms)
1537 if (params.size() < 6)
1539 std::string linetype = params[0]; /* Z, Q, E, G, K */
1540 std::string mask = params[1]; /* Line type dependent */
1541 std::string source = params[2]; /* may not be online or may be a server */
1542 std::string settime = params[3]; /* EPOCH time set */
1543 std::string duration = params[4]; /* Duration secs */
1544 std::string reason = params[5];
1546 switch (*(linetype.c_str()))
1549 add_zline(atoi(duration.c_str()), source.c_str(), reason.c_str(), mask.c_str());
1550 zline_set_creation_time((char*)mask.c_str(), atoi(settime.c_str()));
1553 add_qline(atoi(duration.c_str()), source.c_str(), reason.c_str(), mask.c_str());
1554 qline_set_creation_time((char*)mask.c_str(), atoi(settime.c_str()));
1557 add_eline(atoi(duration.c_str()), source.c_str(), reason.c_str(), mask.c_str());
1558 eline_set_creation_time((char*)mask.c_str(), atoi(settime.c_str()));
1561 add_gline(atoi(duration.c_str()), source.c_str(), reason.c_str(), mask.c_str());
1562 gline_set_creation_time((char*)mask.c_str(), atoi(settime.c_str()));
1565 add_kline(atoi(duration.c_str()), source.c_str(), reason.c_str(), mask.c_str());
1568 /* Just in case... */
1569 Srv->SendOpers("*** \2WARNING\2: Invalid xline type '"+linetype+"' sent by server "+prefix+", ignored!");
1572 /* Send it on its way */
1573 params[5] = ":" + params[5];
1574 DoOneToAllButSender(prefix,"ADDLINE",params,prefix);
1578 bool ChangeName(std::string prefix, std::deque<std::string> ¶ms)
1580 if (params.size() < 1)
1582 userrec* u = Srv->FindNick(prefix);
1585 Srv->ChangeGECOS(u,params[0]);
1586 params[0] = ":" + params[0];
1587 DoOneToAllButSender(prefix,"FNAME",params,u->server);
1592 bool Whois(std::string prefix, std::deque<std::string> ¶ms)
1594 if (params.size() < 1)
1596 log(DEBUG,"In IDLE command");
1597 userrec* u = Srv->FindNick(prefix);
1600 log(DEBUG,"USER EXISTS: %s",u->nick);
1601 // an incoming request
1602 if (params.size() == 1)
1604 userrec* x = Srv->FindNick(params[0]);
1605 if ((x) && (x->fd > -1))
1607 userrec* x = Srv->FindNick(params[0]);
1608 log(DEBUG,"Got IDLE");
1609 char signon[MAXBUF];
1611 log(DEBUG,"Sending back IDLE 3");
1612 snprintf(signon,MAXBUF,"%lu",(unsigned long)x->signon);
1613 snprintf(idle,MAXBUF,"%lu",(unsigned long)abs((x->idle_lastmsg)-time(NULL)));
1614 std::deque<std::string> par;
1615 par.push_back(prefix);
1616 par.push_back(signon);
1617 par.push_back(idle);
1618 // ours, we're done, pass it BACK
1619 DoOneToOne(params[0],"IDLE",par,u->server);
1623 // not ours pass it on
1624 DoOneToOne(prefix,"IDLE",params,x->server);
1627 else if (params.size() == 3)
1629 std::string who_did_the_whois = params[0];
1630 userrec* who_to_send_to = Srv->FindNick(who_did_the_whois);
1631 if ((who_to_send_to) && (who_to_send_to->fd > -1))
1633 log(DEBUG,"Got final IDLE");
1634 // an incoming reply to a whois we sent out
1635 std::string nick_whoised = prefix;
1636 unsigned long signon = atoi(params[1].c_str());
1637 unsigned long idle = atoi(params[2].c_str());
1638 if ((who_to_send_to) && (who_to_send_to->fd > -1))
1639 do_whois(who_to_send_to,u,signon,idle,(char*)nick_whoised.c_str());
1643 // not ours, pass it on
1644 DoOneToOne(prefix,"IDLE",params,who_to_send_to->server);
1651 bool LocalPing(std::string prefix, std::deque<std::string> ¶ms)
1653 if (params.size() < 1)
1655 std::string stufftobounce = params[0];
1656 this->WriteLine(":"+Srv->GetServerName()+" PONG "+stufftobounce);
1660 bool RemoteServer(std::string prefix, std::deque<std::string> ¶ms)
1662 if (params.size() < 4)
1664 std::string servername = params[0];
1665 std::string password = params[1];
1666 // hopcount is not used for a remote server, we calculate this ourselves
1667 std::string description = params[3];
1668 TreeServer* ParentOfThis = FindServer(prefix);
1671 this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
1674 TreeServer* CheckDupe = FindServer(servername);
1677 this->WriteLine("ERROR :Server "+servername+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
1678 Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
1681 TreeServer* Node = new TreeServer(servername,description,ParentOfThis,NULL);
1682 ParentOfThis->AddChild(Node);
1683 params[3] = ":" + params[3];
1684 DoOneToAllButSender(prefix,"SERVER",params,prefix);
1685 Srv->SendOpers("*** Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
1689 bool Outbound_Reply_Server(std::deque<std::string> ¶ms)
1691 if (params.size() < 4)
1693 std::string servername = params[0];
1694 std::string password = params[1];
1695 int hops = atoi(params[2].c_str());
1698 this->WriteLine("ERROR :Server too far away for authentication");
1699 Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, server is too far away for authentication");
1702 std::string description = params[3];
1703 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
1705 if ((x->Name == servername) && (x->RecvPass == password))
1707 TreeServer* CheckDupe = FindServer(servername);
1710 this->WriteLine("ERROR :Server "+servername+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
1711 Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
1714 // Begin the sync here. this kickstarts the
1715 // other side, waiting in WAIT_AUTH_2 state,
1716 // into starting their burst, as it shows
1717 // that we're happy.
1718 this->LinkState = CONNECTED;
1719 // we should add the details of this server now
1720 // to the servers tree, as a child of the root
1722 TreeServer* Node = new TreeServer(servername,description,TreeRoot,this);
1723 TreeRoot->AddChild(Node);
1724 params[3] = ":" + params[3];
1725 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,servername);
1726 this->bursting = true;
1727 this->DoBurst(Node);
1731 this->WriteLine("ERROR :Invalid credentials");
1732 Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, invalid link credentials");
1736 bool Inbound_Server(std::deque<std::string> ¶ms)
1738 if (params.size() < 4)
1740 std::string servername = params[0];
1741 std::string password = params[1];
1742 int hops = atoi(params[2].c_str());
1745 this->WriteLine("ERROR :Server too far away for authentication");
1746 Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, server is too far away for authentication");
1749 std::string description = params[3];
1750 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
1752 if ((x->Name == servername) && (x->RecvPass == password))
1754 TreeServer* CheckDupe = FindServer(servername);
1757 this->WriteLine("ERROR :Server "+servername+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
1758 Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
1761 /* If the config says this link is encrypted, but the remote side
1762 * hasnt bothered to send the AES command before SERVER, then we
1763 * boot them off as we MUST have this connection encrypted.
1765 if ((x->EncryptionKey != "") && (!this->ctx_in))
1767 this->WriteLine("ERROR :This link requires AES encryption to be enabled. Plaintext connection refused.");
1768 Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, remote server did not enable AES.");
1771 Srv->SendOpers("*** Verified incoming server connection from \002"+servername+"\002["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] ("+description+")");
1772 this->InboundServerName = servername;
1773 this->InboundDescription = description;
1774 // this is good. Send our details: Our server name and description and hopcount of 0,
1775 // along with the sendpass from this block.
1776 this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
1777 // move to the next state, we are now waiting for THEM.
1778 this->LinkState = WAIT_AUTH_2;
1782 this->WriteLine("ERROR :Invalid credentials");
1783 Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, invalid link credentials");
1787 void Split(std::string line, bool stripcolon, std::deque<std::string> &n)
1789 if (!strchr(line.c_str(),' '))
1794 std::stringstream s(line);
1795 std::string param = "";
1814 if ((param == ":") && (item > 0))
1837 bool ProcessLine(std::string line)
1839 char* l = (char*)line.c_str();
1840 while ((strlen(l)) && (l[strlen(l)-1] == '\r') || (l[strlen(l)-1] == '\n'))
1841 l[strlen(l)-1] = '\0';
1845 Srv->Log(DEBUG,"IN: "+line);
1847 std::deque<std::string> params;
1848 this->Split(line,true,params);
1849 std::string command = "";
1850 std::string prefix = "";
1851 if (((params[0].c_str())[0] == ':') && (params.size() > 1))
1854 command = params[1];
1855 char* pref = (char*)prefix.c_str();
1863 command = params[0];
1867 if ((!this->ctx_in) && (command == "AES"))
1869 std::string sserv = params[0];
1870 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
1872 if ((x->EncryptionKey != "") && (x->Name == sserv))
1874 this->InitAES(x->EncryptionKey,sserv);
1879 else if ((this->ctx_in) && (command == "AES"))
1881 WriteOpers("*** \2AES\2: Encryption already enabled on this connection yet %s is trying to enable it twice!",params[0].c_str());
1884 switch (this->LinkState)
1889 // Waiting for SERVER command from remote server. Server initiating
1890 // the connection sends the first SERVER command, listening server
1891 // replies with theirs if its happy, then if the initiator is happy,
1892 // it starts to send its net sync, which starts the merge, otherwise
1893 // it sends an ERROR.
1894 if (command == "PASS")
1896 /* Silently ignored */
1898 else if (command == "SERVER")
1900 return this->Inbound_Server(params);
1902 else if (command == "ERROR")
1904 return this->Error(params);
1906 else if (command == "USER")
1908 this->WriteLine("ERROR :Client connections to this port are prohibited.");
1911 else if (command == "CAPAB")
1913 return this->Capab(params);
1915 else if ((command == "U") || (command == "S"))
1917 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
1922 this->WriteLine("ERROR :Invalid command in negotiation phase.");
1927 // Waiting for start of other side's netmerge to say they liked our
1929 if (command == "SERVER")
1931 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
1935 else if ((command == "U") || (command == "S"))
1937 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
1940 else if (command == "BURST")
1942 this->LinkState = CONNECTED;
1943 Node = new TreeServer(InboundServerName,InboundDescription,TreeRoot,this);
1944 TreeRoot->AddChild(Node);
1946 params.push_back(InboundServerName);
1947 params.push_back("*");
1948 params.push_back("1");
1949 params.push_back(":"+InboundDescription);
1950 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,InboundServerName);
1951 this->bursting = true;
1952 this->DoBurst(Node);
1954 else if (command == "ERROR")
1956 return this->Error(params);
1958 else if (command == "CAPAB")
1960 return this->Capab(params);
1965 this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
1969 if (command == "SERVER")
1971 // another server we connected to, which was in WAIT_AUTH_1 state,
1972 // has just sent us their credentials. If we get this far, theyre
1973 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
1974 // if we're happy with this, we should send our netburst which
1975 // kickstarts the merge.
1976 return this->Outbound_Reply_Server(params);
1978 else if (command == "ERROR")
1980 return this->Error(params);
1984 // This is the 'authenticated' state, when all passwords
1985 // have been exchanged and anything past this point is taken
1990 std::string direction = prefix;
1991 userrec* t = Srv->FindNick(prefix);
1994 direction = t->server;
1996 TreeServer* route_back_again = BestRouteTo(direction);
1997 if ((!route_back_again) || (route_back_again->GetSocket() != this))
1999 if (route_back_again)
2000 log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
2005 * When there is activity on the socket, reset the ping counter so
2006 * that we're not wasting bandwidth pinging an active server.
2008 route_back_again->SetNextPingTime(time(NULL) + 120);
2009 route_back_again->SetPingFlag();
2012 if (command == "SVSMODE")
2014 /* Services expects us to implement
2015 * SVSMODE. In inspircd its the same as
2020 std::string target = "";
2021 /* Yes, know, this is a mess. Its reasonably fast though as we're
2022 * working with std::string here.
2024 if ((command == "NICK") && (params.size() > 1))
2026 return this->IntroduceClient(prefix,params);
2028 else if (command == "FJOIN")
2030 return this->ForceJoin(prefix,params);
2032 else if (command == "SERVER")
2034 return this->RemoteServer(prefix,params);
2036 else if (command == "ERROR")
2038 return this->Error(params);
2040 else if (command == "OPERTYPE")
2042 return this->OperType(prefix,params);
2044 else if (command == "FMODE")
2046 return this->ForceMode(prefix,params);
2048 else if (command == "KILL")
2050 return this->RemoteKill(prefix,params);
2052 else if (command == "FTOPIC")
2054 return this->ForceTopic(prefix,params);
2056 else if (command == "REHASH")
2058 return this->RemoteRehash(prefix,params);
2060 else if (command == "METADATA")
2062 return this->MetaData(prefix,params);
2064 else if (command == "PING")
2066 return this->LocalPing(prefix,params);
2068 else if (command == "PONG")
2070 return this->LocalPong(prefix,params);
2072 else if (command == "VERSION")
2074 return this->ServerVersion(prefix,params);
2076 else if (command == "FHOST")
2078 return this->ChangeHost(prefix,params);
2080 else if (command == "FNAME")
2082 return this->ChangeName(prefix,params);
2084 else if (command == "ADDLINE")
2086 return this->AddLine(prefix,params);
2088 else if (command == "SVSNICK")
2092 prefix = this->GetName();
2094 return this->ForceNick(prefix,params);
2096 else if (command == "IDLE")
2098 return this->Whois(prefix,params);
2100 else if (command == "SVSJOIN")
2104 prefix = this->GetName();
2106 return this->ServiceJoin(prefix,params);
2108 else if (command == "SQUIT")
2110 if (params.size() == 2)
2112 this->Squit(FindServer(params[0]),params[1]);
2116 else if (command == "ENDBURST")
2118 this->bursting = false;
2123 // not a special inter-server command.
2124 // Emulate the actual user doing the command,
2125 // this saves us having a huge ugly parser.
2126 userrec* who = Srv->FindNick(prefix);
2127 std::string sourceserv = this->myhost;
2128 if (this->InboundServerName != "")
2130 sourceserv = this->InboundServerName;
2134 if ((command == "NICK") && (params.size() > 0))
2136 /* On nick messages, check that the nick doesnt
2137 * already exist here. If it does, kill their copy,
2140 userrec* x = Srv->FindNick(params[0]);
2143 std::deque<std::string> p;
2144 p.push_back(params[0]);
2145 p.push_back("Nickname collision ("+prefix+" -> "+params[0]+")");
2146 DoOneToMany(Srv->GetServerName(),"KILL",p);
2148 p.push_back(prefix);
2149 p.push_back("Nickname collision");
2150 DoOneToMany(Srv->GetServerName(),"KILL",p);
2151 Srv->QuitUser(x,"Nickname collision ("+prefix+" -> "+params[0]+")");
2152 userrec* y = Srv->FindNick(prefix);
2155 Srv->QuitUser(y,"Nickname collision");
2157 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
2161 target = who->server;
2162 char* strparams[127];
2163 for (unsigned int q = 0; q < params.size(); q++)
2165 strparams[q] = (char*)params[q].c_str();
2167 Srv->CallCommandHandler(command, strparams, params.size(), who);
2171 // its not a user. Its either a server, or somethings screwed up.
2172 if (IsServer(prefix))
2174 target = Srv->GetServerName();
2178 log(DEBUG,"Command with unknown origin '%s'",prefix.c_str());
2182 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
2191 virtual std::string GetName()
2193 std::string sourceserv = this->myhost;
2194 if (this->InboundServerName != "")
2196 sourceserv = this->InboundServerName;
2201 virtual void OnTimeout()
2203 if (this->LinkState == CONNECTING)
2205 Srv->SendOpers("*** CONNECT: Connection to \002"+myhost+"\002 timed out.");
2209 virtual void OnClose()
2211 // Connection closed.
2212 // If the connection is fully up (state CONNECTED)
2213 // then propogate a netsplit to all peers.
2214 std::string quitserver = this->myhost;
2215 if (this->InboundServerName != "")
2217 quitserver = this->InboundServerName;
2219 TreeServer* s = FindServer(quitserver);
2222 Squit(s,"Remote host closed the connection");
2224 WriteOpers("Server '\2%s\2' closed the connection.",quitserver.c_str());
2227 virtual int OnIncomingConnection(int newsock, char* ip)
2229 TreeSocket* s = new TreeSocket(newsock, ip);
2235 void AddThisServer(TreeServer* server, std::deque<TreeServer*> &list)
2237 for (unsigned int c = 0; c < list.size(); c++)
2239 if (list[c] == server)
2244 list.push_back(server);
2247 // returns a list of DIRECT servernames for a specific channel
2248 void GetListOfServersForChannel(chanrec* c, std::deque<TreeServer*> &list)
2250 std::map<char*,char*> *ulist = c->GetUsers();
2251 for (std::map<char*,char*>::iterator i = ulist->begin(); i != ulist->end(); i++)
2253 char* o = i->second;
2254 userrec* otheruser = (userrec*)o;
2255 if (otheruser->fd < 0)
2257 TreeServer* best = BestRouteTo(otheruser->server);
2259 AddThisServer(best,list);
2265 bool DoOneToAllButSenderRaw(std::string data, std::string omit, std::string prefix, std::string command, std::deque<std::string> ¶ms)
2267 TreeServer* omitroute = BestRouteTo(omit);
2268 if ((command == "NOTICE") || (command == "PRIVMSG"))
2270 if ((params.size() >= 2) && (*(params[0].c_str()) != '$'))
2272 if (*(params[0].c_str()) != '#')
2274 // special routing for private messages/notices
2275 userrec* d = Srv->FindNick(params[0]);
2278 std::deque<std::string> par;
2279 par.push_back(params[0]);
2280 par.push_back(":"+params[1]);
2281 DoOneToOne(prefix,command,par,d->server);
2287 log(DEBUG,"Channel privmsg going to chan %s",params[0].c_str());
2288 chanrec* c = Srv->FindChannel(params[0]);
2291 std::deque<TreeServer*> list;
2292 GetListOfServersForChannel(c,list);
2293 log(DEBUG,"Got a list of %d servers",list.size());
2294 unsigned int lsize = list.size();
2295 for (unsigned int i = 0; i < lsize; i++)
2297 TreeSocket* Sock = list[i]->GetSocket();
2298 if ((Sock) && (list[i]->GetName() != omit) && (omitroute != list[i]))
2300 log(DEBUG,"Writing privmsg to server %s",list[i]->GetName().c_str());
2301 Sock->WriteLine(data);
2309 unsigned int items = TreeRoot->ChildCount();
2310 for (unsigned int x = 0; x < items; x++)
2312 TreeServer* Route = TreeRoot->GetChild(x);
2313 if ((Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
2315 TreeSocket* Sock = Route->GetSocket();
2316 Sock->WriteLine(data);
2322 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string omit)
2324 TreeServer* omitroute = BestRouteTo(omit);
2325 std::string FullLine = ":" + prefix + " " + command;
2326 unsigned int words = params.size();
2327 for (unsigned int x = 0; x < words; x++)
2329 FullLine = FullLine + " " + params[x];
2331 unsigned int items = TreeRoot->ChildCount();
2332 for (unsigned int x = 0; x < items; x++)
2334 TreeServer* Route = TreeRoot->GetChild(x);
2335 // Send the line IF:
2336 // The route has a socket (its a direct connection)
2337 // The route isnt the one to be omitted
2338 // The route isnt the path to the one to be omitted
2339 if ((Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
2341 TreeSocket* Sock = Route->GetSocket();
2342 Sock->WriteLine(FullLine);
2348 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> ¶ms)
2350 std::string FullLine = ":" + prefix + " " + command;
2351 unsigned int words = params.size();
2352 for (unsigned int x = 0; x < words; x++)
2354 FullLine = FullLine + " " + params[x];
2356 unsigned int items = TreeRoot->ChildCount();
2357 for (unsigned int x = 0; x < items; x++)
2359 TreeServer* Route = TreeRoot->GetChild(x);
2360 if (Route->GetSocket())
2362 TreeSocket* Sock = Route->GetSocket();
2363 Sock->WriteLine(FullLine);
2369 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string target)
2371 TreeServer* Route = BestRouteTo(target);
2374 std::string FullLine = ":" + prefix + " " + command;
2375 unsigned int words = params.size();
2376 for (unsigned int x = 0; x < words; x++)
2378 FullLine = FullLine + " " + params[x];
2380 if (Route->GetSocket())
2382 TreeSocket* Sock = Route->GetSocket();
2383 Sock->WriteLine(FullLine);
2393 std::vector<TreeSocket*> Bindings;
2395 void ReadConfiguration(bool rebind)
2397 Conf = new ConfigReader;
2400 for (int j =0; j < Conf->Enumerate("bind"); j++)
2402 std::string Type = Conf->ReadValue("bind","type",j);
2403 std::string IP = Conf->ReadValue("bind","address",j);
2404 long Port = Conf->ReadInteger("bind","port",j,true);
2405 if (Type == "servers")
2411 TreeSocket* listener = new TreeSocket(IP.c_str(),Port,true,10);
2412 if (listener->GetState() == I_LISTENING)
2414 Srv->AddSocket(listener);
2415 Bindings.push_back(listener);
2419 log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port %d",Port);
2426 FlatLinks = Conf->ReadFlag("options","flatlinks",0);
2427 HideULines = Conf->ReadFlag("options","hideulines",0);
2429 for (int j =0; j < Conf->Enumerate("link"); j++)
2432 L.Name = Conf->ReadValue("link","name",j);
2433 L.IPAddr = Conf->ReadValue("link","ipaddr",j);
2434 L.Port = Conf->ReadInteger("link","port",j,true);
2435 L.SendPass = Conf->ReadValue("link","sendpass",j);
2436 L.RecvPass = Conf->ReadValue("link","recvpass",j);
2437 L.AutoConnect = Conf->ReadInteger("link","autoconnect",j,true);
2438 L.EncryptionKey = Conf->ReadValue("link","encryptionkey",j);
2439 L.HiddenFromStats = Conf->ReadFlag("link","hidden",j);
2440 L.NextConnectTime = time(NULL) + L.AutoConnect;
2441 /* Bugfix by brain, do not allow people to enter bad configurations */
2442 if ((L.RecvPass != "") && (L.SendPass != "") && (L.Name != "") && (L.Port))
2444 LinkBlocks.push_back(L);
2445 log(DEBUG,"m_spanningtree: Read server %s with host %s:%d",L.Name.c_str(),L.IPAddr.c_str(),L.Port);
2449 if (L.RecvPass == "")
2451 log(DEFAULT,"Invalid configuration for server '%s', recvpass not defined!",L.Name.c_str());
2453 else if (L.SendPass == "")
2455 log(DEFAULT,"Invalid configuration for server '%s', sendpass not defined!",L.Name.c_str());
2457 else if (L.Name == "")
2459 log(DEFAULT,"Invalid configuration, link tag without a name!");
2463 log(DEFAULT,"Invalid configuration for server '%s', no port specified!",L.Name.c_str());
2471 class ModuleSpanningTree : public Module
2473 std::vector<TreeSocket*> Bindings;
2479 ModuleSpanningTree(Server* Me)
2480 : Module::Module(Me)
2485 // Create the root of the tree
2486 TreeRoot = new TreeServer(Srv->GetServerName(),Srv->GetServerDescription());
2488 ReadConfiguration(true);
2491 void ShowLinks(TreeServer* Current, userrec* user, int hops)
2493 std::string Parent = TreeRoot->GetName();
2494 if (Current->GetParent())
2496 Parent = Current->GetParent()->GetName();
2498 for (unsigned int q = 0; q < Current->ChildCount(); q++)
2500 if ((HideULines) && (Srv->IsUlined(Current->GetName())))
2504 ShowLinks(Current->GetChild(q),user,hops+1);
2509 ShowLinks(Current->GetChild(q),user,hops+1);
2512 WriteServ(user->fd,"364 %s %s %s :%d %s",user->nick,Current->GetName().c_str(),Parent.c_str(),(FlatLinks && (!*user->oper)) ? 0 : hops,Current->GetDesc().c_str());
2515 int CountLocalServs()
2517 return TreeRoot->ChildCount();
2522 return serverlist.size();
2525 void HandleLinks(char** parameters, int pcnt, userrec* user)
2527 ShowLinks(TreeRoot,user,0);
2528 WriteServ(user->fd,"365 %s * :End of /LINKS list.",user->nick);
2532 void HandleLusers(char** parameters, int pcnt, userrec* user)
2534 WriteServ(user->fd,"251 %s :There are %d users and %d invisible on %d servers",user->nick,usercnt()-usercount_invisible(),usercount_invisible(),this->CountServs());
2535 WriteServ(user->fd,"252 %s %d :operator(s) online",user->nick,usercount_opers());
2536 WriteServ(user->fd,"253 %s %d :unknown connections",user->nick,usercount_unknown());
2537 WriteServ(user->fd,"254 %s %d :channels formed",user->nick,chancount());
2538 WriteServ(user->fd,"254 %s :I have %d clients and %d servers",user->nick,local_count(),this->CountLocalServs());
2542 // WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS.
2544 void ShowMap(TreeServer* Current, userrec* user, int depth, char matrix[128][80])
2548 for (int t = 0; t < depth; t++)
2550 matrix[line][t] = ' ';
2553 // For Aligning, we need to work out exactly how deep this thing is, and produce
2554 // a 'Spacer' String to compensate.
2557 memset(spacer,' ',40);
2558 if ((40 - Current->GetName().length() - depth) > 1) {
2559 spacer[40 - Current->GetName().length() - depth] = '\0';
2568 if (clientlist.size() == 0) {
2569 // If there are no users, WHO THE HELL DID THE /MAP?!?!?!
2574 percent = ((float)Current->GetUserCount() / (float)clientlist.size()) * 100;
2576 snprintf(text, 80, "%s %s%5d [%5.2f%%]", Current->GetName().c_str(), spacer, Current->GetUserCount(), percent);
2577 strlcpy(&matrix[line][depth],text,80);
2579 for (unsigned int q = 0; q < Current->ChildCount(); q++)
2581 if ((HideULines) && (Srv->IsUlined(Current->GetChild(q)->GetName())))
2585 ShowMap(Current->GetChild(q),user,(FlatLinks && (!*user->oper)) ? depth : depth+2,matrix);
2590 ShowMap(Current->GetChild(q),user,(FlatLinks && (!*user->oper)) ? depth : depth+2,matrix);
2596 // Ok, prepare to be confused.
2597 // After much mulling over how to approach this, it struck me that
2598 // the 'usual' way of doing a /MAP isnt the best way. Instead of
2599 // keeping track of a ton of ascii characters, and line by line
2600 // under recursion working out where to place them using multiplications
2601 // and divisons, we instead render the map onto a backplane of characters
2602 // (a character matrix), then draw the branches as a series of "L" shapes
2603 // from the nodes. This is not only friendlier on CPU it uses less stack.
2605 void HandleMap(char** parameters, int pcnt, userrec* user)
2607 // This array represents a virtual screen which we will
2608 // "scratch" draw to, as the console device of an irc
2609 // client does not provide for a proper terminal.
2610 char matrix[128][80];
2611 for (unsigned int t = 0; t < 128; t++)
2613 matrix[t][0] = '\0';
2616 // The only recursive bit is called here.
2617 ShowMap(TreeRoot,user,0,matrix);
2618 // Process each line one by one. The algorithm has a limit of
2619 // 128 servers (which is far more than a spanning tree should have
2620 // anyway, so we're ok). This limit can be raised simply by making
2621 // the character matrix deeper, 128 rows taking 10k of memory.
2622 for (int l = 1; l < line; l++)
2624 // scan across the line looking for the start of the
2625 // servername (the recursive part of the algorithm has placed
2626 // the servers at indented positions depending on what they
2628 int first_nonspace = 0;
2629 while (matrix[l][first_nonspace] == ' ')
2634 // Draw the `- (corner) section: this may be overwritten by
2635 // another L shape passing along the same vertical pane, becoming
2636 // a |- (branch) section instead.
2637 matrix[l][first_nonspace] = '-';
2638 matrix[l][first_nonspace-1] = '`';
2640 // Draw upwards until we hit the parent server, causing possibly
2641 // other corners (`-) to become branches (|-)
2642 while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`'))
2644 matrix[l2][first_nonspace-1] = '|';
2648 // dump the whole lot to the user. This is the easy bit, honest.
2649 for (int t = 0; t < line; t++)
2651 WriteServ(user->fd,"006 %s :%s",user->nick,&matrix[t][0]);
2653 WriteServ(user->fd,"007 %s :End of /MAP",user->nick);
2657 int HandleSquit(char** parameters, int pcnt, userrec* user)
2659 TreeServer* s = FindServerMask(parameters[0]);
2664 WriteServ(user->fd,"NOTICE %s :*** SQUIT: Foolish mortal, you cannot make a server SQUIT itself! (%s matches local server name)",user->nick,parameters[0]);
2667 TreeSocket* sock = s->GetSocket();
2670 log(DEBUG,"Splitting server %s",s->GetName().c_str());
2671 WriteOpers("*** SQUIT: Server \002%s\002 removed from network by %s",parameters[0],user->nick);
2672 sock->Squit(s,"Server quit by "+std::string(user->nick)+"!"+std::string(user->ident)+"@"+std::string(user->host));
2673 Srv->RemoveSocket(sock);
2677 WriteServ(user->fd,"NOTICE %s :*** SQUIT: The server \002%s\002 is not directly connected.",user->nick,parameters[0]);
2682 WriteServ(user->fd,"NOTICE %s :*** SQUIT: The server \002%s\002 does not exist on the network.",user->nick,parameters[0]);
2687 int HandleRemoteWhois(char** parameters, int pcnt, userrec* user)
2689 if ((user->fd > -1) && (pcnt > 1))
2691 userrec* remote = Srv->FindNick(parameters[1]);
2692 if ((remote) && (remote->fd < 0))
2694 std::deque<std::string> params;
2695 params.push_back(parameters[1]);
2696 DoOneToOne(user->nick,"IDLE",params,remote->server);
2701 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[1]);
2702 WriteServ(user->fd,"318 %s %s :End of /WHOIS list.",user->nick, parameters[1]);
2709 void DoPingChecks(time_t curtime)
2711 for (unsigned int j = 0; j < TreeRoot->ChildCount(); j++)
2713 TreeServer* serv = TreeRoot->GetChild(j);
2714 TreeSocket* sock = serv->GetSocket();
2717 if (curtime >= serv->NextPingTime())
2719 if (serv->AnsweredLastPing())
2721 sock->WriteLine(":"+Srv->GetServerName()+" PING "+serv->GetName());
2722 serv->SetNextPingTime(curtime + 120);
2726 // they didnt answer, boot them
2727 WriteOpers("*** Server \002%s\002 pinged out",serv->GetName().c_str());
2728 sock->Squit(serv,"Ping timeout");
2729 Srv->RemoveSocket(sock);
2738 void AutoConnectServers(time_t curtime)
2740 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2742 if ((x->AutoConnect) && (curtime >= x->NextConnectTime))
2744 log(DEBUG,"Auto-Connecting %s",x->Name.c_str());
2745 x->NextConnectTime = curtime + x->AutoConnect;
2746 TreeServer* CheckDupe = FindServer(x->Name);
2749 // an autoconnected server is not connected. Check if its time to connect it
2750 WriteOpers("*** AUTOCONNECT: Auto-connecting server \002%s\002 (%lu seconds until next attempt)",x->Name.c_str(),x->AutoConnect);
2751 TreeSocket* newsocket = new TreeSocket(x->IPAddr,x->Port,false,10,x->Name);
2752 if (newsocket->GetState() != I_ERROR)
2754 Srv->AddSocket(newsocket);
2758 WriteOpers("*** AUTOCONNECT: Error autoconnecting \002%s\002.",x->Name.c_str());
2766 int HandleVersion(char** parameters, int pcnt, userrec* user)
2768 // we've already checked if pcnt > 0, so this is safe
2769 TreeServer* found = FindServerMask(parameters[0]);
2772 std::string Version = found->GetVersion();
2773 WriteServ(user->fd,"351 %s :%s",user->nick,Version.c_str());
2774 if (found == TreeRoot)
2776 std::stringstream out(Config->data005);
2777 std::string token = "";
2778 std::string line5 = "";
2779 int token_counter = 0;
2783 line5 = line5 + token + " ";
2785 if ((token_counter >= 13) || (out.eof() == true))
2787 WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
2796 WriteServ(user->fd,"402 %s %s :No such server",user->nick,parameters[0]);
2801 int HandleConnect(char** parameters, int pcnt, userrec* user)
2803 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2805 if (Srv->MatchText(x->Name.c_str(),parameters[0]))
2807 TreeServer* CheckDupe = FindServer(x->Name);
2810 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);
2811 TreeSocket* newsocket = new TreeSocket(x->IPAddr,x->Port,false,10,x->Name);
2812 if (newsocket->GetState() != I_ERROR)
2814 Srv->AddSocket(newsocket);
2818 WriteServ(user->fd,"NOTICE %s :*** CONNECT: Error connecting \002%s\002.",user->nick,x->Name.c_str());
2825 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());
2830 WriteServ(user->fd,"NOTICE %s :*** CONNECT: No server matching \002%s\002 could be found in the config file.",user->nick,parameters[0]);
2834 virtual int OnStats(char statschar, userrec* user)
2836 if (statschar == 'c')
2838 for (unsigned int i = 0; i < LinkBlocks.size(); i++)
2840 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');
2841 WriteServ(user->fd,"244 %s H * * %s",user->nick,LinkBlocks[i].Name.c_str());
2843 WriteServ(user->fd,"219 %s %c :End of /STATS report",user->nick,statschar);
2844 WriteOpers("*** Notice: Stats '%c' requested by %s (%s@%s)",statschar,user->nick,user->ident,user->host);
2850 virtual int OnPreCommand(std::string command, char **parameters, int pcnt, userrec *user, bool validated)
2852 /* If the command doesnt appear to be valid, we dont want to mess with it. */
2856 if (command == "CONNECT")
2858 return this->HandleConnect(parameters,pcnt,user);
2860 else if (command == "SQUIT")
2862 return this->HandleSquit(parameters,pcnt,user);
2864 else if (command == "MAP")
2866 this->HandleMap(parameters,pcnt,user);
2869 else if (command == "LUSERS")
2871 this->HandleLusers(parameters,pcnt,user);
2874 else if (command == "LINKS")
2876 this->HandleLinks(parameters,pcnt,user);
2879 else if (command == "WHOIS")
2884 return this->HandleRemoteWhois(parameters,pcnt,user);
2887 else if ((command == "VERSION") && (pcnt > 0))
2889 this->HandleVersion(parameters,pcnt,user);
2892 else if (Srv->IsValidModuleCommand(command, pcnt, user))
2894 // this bit of code cleverly routes all module commands
2895 // to all remote severs *automatically* so that modules
2896 // can just handle commands locally, without having
2897 // to have any special provision in place for remote
2898 // commands and linking protocols.
2899 std::deque<std::string> params;
2901 for (int j = 0; j < pcnt; j++)
2903 if (strchr(parameters[j],' '))
2905 params.push_back(":" + std::string(parameters[j]));
2909 params.push_back(std::string(parameters[j]));
2912 log(DEBUG,"Globally route '%s'",command.c_str());
2913 DoOneToMany(user->nick,command,params);
2918 virtual void OnGetServerDescription(std::string servername,std::string &description)
2920 TreeServer* s = FindServer(servername);
2923 description = s->GetDesc();
2927 virtual void OnUserInvite(userrec* source,userrec* dest,chanrec* channel)
2929 if (source->fd > -1)
2931 std::deque<std::string> params;
2932 params.push_back(dest->nick);
2933 params.push_back(channel->name);
2934 DoOneToMany(source->nick,"INVITE",params);
2938 virtual void OnPostLocalTopicChange(userrec* user, chanrec* chan, std::string topic)
2940 std::deque<std::string> params;
2941 params.push_back(chan->name);
2942 params.push_back(":"+topic);
2943 DoOneToMany(user->nick,"TOPIC",params);
2946 virtual void OnWallops(userrec* user, std::string text)
2950 std::deque<std::string> params;
2951 params.push_back(":"+text);
2952 DoOneToMany(user->nick,"WALLOPS",params);
2956 virtual void OnUserNotice(userrec* user, void* dest, int target_type, std::string text)
2958 if (target_type == TYPE_USER)
2960 userrec* d = (userrec*)dest;
2961 if ((d->fd < 0) && (user->fd > -1))
2963 std::deque<std::string> params;
2965 params.push_back(d->nick);
2966 params.push_back(":"+text);
2967 DoOneToOne(user->nick,"NOTICE",params,d->server);
2974 chanrec *c = (chanrec*)dest;
2975 std::deque<TreeServer*> list;
2976 GetListOfServersForChannel(c,list);
2977 unsigned int ucount = list.size();
2978 for (unsigned int i = 0; i < ucount; i++)
2980 TreeSocket* Sock = list[i]->GetSocket();
2982 Sock->WriteLine(":"+std::string(user->nick)+" NOTICE "+std::string(c->name)+" :"+text);
2988 virtual void OnUserMessage(userrec* user, void* dest, int target_type, std::string text)
2990 if (target_type == TYPE_USER)
2992 // route private messages which are targetted at clients only to the server
2993 // which needs to receive them
2994 userrec* d = (userrec*)dest;
2995 if ((d->fd < 0) && (user->fd > -1))
2997 std::deque<std::string> params;
2999 params.push_back(d->nick);
3000 params.push_back(":"+text);
3001 DoOneToOne(user->nick,"PRIVMSG",params,d->server);
3008 chanrec *c = (chanrec*)dest;
3009 std::deque<TreeServer*> list;
3010 GetListOfServersForChannel(c,list);
3011 unsigned int ucount = list.size();
3012 for (unsigned int i = 0; i < ucount; i++)
3014 TreeSocket* Sock = list[i]->GetSocket();
3016 Sock->WriteLine(":"+std::string(user->nick)+" PRIVMSG "+std::string(c->name)+" :"+text);
3022 virtual void OnBackgroundTimer(time_t curtime)
3024 AutoConnectServers(curtime);
3025 DoPingChecks(curtime);
3028 virtual void OnUserJoin(userrec* user, chanrec* channel)
3030 // Only do this for local users
3033 std::deque<std::string> params;
3035 params.push_back(channel->name);
3038 // if the channel has a key, force the join by emulating the key.
3039 params.push_back(channel->key);
3041 if (channel->GetUserCounter() > 1)
3043 // not the first in the channel
3044 DoOneToMany(user->nick,"JOIN",params);
3048 // first in the channel, set up their permissions
3049 // and the channel TS with FJOIN.
3051 snprintf(ts,24,"%lu",(unsigned long)channel->age);
3053 params.push_back(channel->name);
3054 params.push_back(ts);
3055 params.push_back("@"+std::string(user->nick));
3056 DoOneToMany(Srv->GetServerName(),"FJOIN",params);
3061 virtual void OnChangeHost(userrec* user, std::string newhost)
3063 // only occurs for local clients
3064 if (user->registered != 7)
3066 std::deque<std::string> params;
3067 params.push_back(newhost);
3068 DoOneToMany(user->nick,"FHOST",params);
3071 virtual void OnChangeName(userrec* user, std::string gecos)
3073 // only occurs for local clients
3074 if (user->registered != 7)
3076 std::deque<std::string> params;
3077 params.push_back(gecos);
3078 DoOneToMany(user->nick,"FNAME",params);
3081 virtual void OnUserPart(userrec* user, chanrec* channel, std::string partmessage)
3085 std::deque<std::string> params;
3086 params.push_back(channel->name);
3087 if (partmessage != "")
3088 params.push_back(":"+partmessage);
3089 DoOneToMany(user->nick,"PART",params);
3093 virtual void OnUserConnect(userrec* user)
3095 char agestr[MAXBUF];
3098 std::deque<std::string> params;
3099 snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age);
3100 params.push_back(agestr);
3101 params.push_back(user->nick);
3102 params.push_back(user->host);
3103 params.push_back(user->dhost);
3104 params.push_back(user->ident);
3105 params.push_back("+"+std::string(user->modes));
3106 params.push_back((char*)inet_ntoa(user->ip4));
3107 params.push_back(":"+std::string(user->fullname));
3108 DoOneToMany(Srv->GetServerName(),"NICK",params);
3110 // User is Local, change needs to be reflected!
3111 TreeServer* SourceServer = FindServer(user->server);
3113 SourceServer->AddUserCount();
3119 virtual void OnUserQuit(userrec* user, std::string reason)
3121 if ((user->fd > -1) && (user->registered == 7))
3123 std::deque<std::string> params;
3124 params.push_back(":"+reason);
3125 DoOneToMany(user->nick,"QUIT",params);
3127 // Regardless, We need to modify the user Counts..
3128 TreeServer* SourceServer = FindServer(user->server);
3130 SourceServer->DelUserCount();
3135 virtual void OnUserPostNick(userrec* user, std::string oldnick)
3139 std::deque<std::string> params;
3140 params.push_back(user->nick);
3141 DoOneToMany(oldnick,"NICK",params);
3145 virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, std::string reason)
3147 if ((source) && (source->fd > -1))
3149 std::deque<std::string> params;
3150 params.push_back(chan->name);
3151 params.push_back(user->nick);
3152 params.push_back(":"+reason);
3153 DoOneToMany(source->nick,"KICK",params);
3157 virtual void OnRemoteKill(userrec* source, userrec* dest, std::string reason)
3159 std::deque<std::string> params;
3160 params.push_back(dest->nick);
3161 params.push_back(":"+reason);
3162 DoOneToMany(source->nick,"KILL",params);
3165 virtual void OnRehash(std::string parameter)
3167 if (parameter != "")
3169 std::deque<std::string> params;
3170 params.push_back(parameter);
3171 DoOneToMany(Srv->GetServerName(),"REHASH",params);
3173 if (Srv->MatchText(Srv->GetServerName(),parameter))
3175 Srv->SendOpers("*** Remote rehash initiated from server \002"+Srv->GetServerName()+"\002.");
3176 Srv->RehashServer();
3179 ReadConfiguration(false);
3182 // note: the protocol does not allow direct umode +o except
3183 // via NICK with 8 params. sending OPERTYPE infers +o modechange
3185 virtual void OnOper(userrec* user, std::string opertype)
3189 std::deque<std::string> params;
3190 params.push_back(opertype);
3191 DoOneToMany(user->nick,"OPERTYPE",params);
3195 void OnLine(userrec* source, std::string host, bool adding, char linetype, long duration, std::string reason)
3197 if (source->fd > -1)
3200 snprintf(type,8,"%cLINE",linetype);
3201 std::string stype = type;
3204 char sduration[MAXBUF];
3205 snprintf(sduration,MAXBUF,"%ld",duration);
3206 std::deque<std::string> params;
3207 params.push_back(host);
3208 params.push_back(sduration);
3209 params.push_back(":"+reason);
3210 DoOneToMany(source->nick,stype,params);
3214 std::deque<std::string> params;
3215 params.push_back(host);
3216 DoOneToMany(source->nick,stype,params);
3221 virtual void OnAddGLine(long duration, userrec* source, std::string reason, std::string hostmask)
3223 OnLine(source,hostmask,true,'G',duration,reason);
3226 virtual void OnAddZLine(long duration, userrec* source, std::string reason, std::string ipmask)
3228 OnLine(source,ipmask,true,'Z',duration,reason);
3231 virtual void OnAddQLine(long duration, userrec* source, std::string reason, std::string nickmask)
3233 OnLine(source,nickmask,true,'Q',duration,reason);
3236 virtual void OnAddELine(long duration, userrec* source, std::string reason, std::string hostmask)
3238 OnLine(source,hostmask,true,'E',duration,reason);
3241 virtual void OnDelGLine(userrec* source, std::string hostmask)
3243 OnLine(source,hostmask,false,'G',0,"");
3246 virtual void OnDelZLine(userrec* source, std::string ipmask)
3248 OnLine(source,ipmask,false,'Z',0,"");
3251 virtual void OnDelQLine(userrec* source, std::string nickmask)
3253 OnLine(source,nickmask,false,'Q',0,"");
3256 virtual void OnDelELine(userrec* source, std::string hostmask)
3258 OnLine(source,hostmask,false,'E',0,"");
3261 virtual void OnMode(userrec* user, void* dest, int target_type, std::string text)
3263 if ((user->fd > -1) && (user->registered == 7))
3265 if (target_type == TYPE_USER)
3267 userrec* u = (userrec*)dest;
3268 std::deque<std::string> params;
3269 params.push_back(u->nick);
3270 params.push_back(text);
3271 DoOneToMany(user->nick,"MODE",params);
3275 chanrec* c = (chanrec*)dest;
3276 std::deque<std::string> params;
3277 params.push_back(c->name);
3278 params.push_back(text);
3279 DoOneToMany(user->nick,"MODE",params);
3284 virtual void ProtoSendMode(void* opaque, int target_type, void* target, std::string modeline)
3286 TreeSocket* s = (TreeSocket*)opaque;
3289 if (target_type == TYPE_USER)
3291 userrec* u = (userrec*)target;
3292 s->WriteLine(":"+Srv->GetServerName()+" FMODE "+u->nick+" "+modeline);
3296 chanrec* c = (chanrec*)target;
3297 s->WriteLine(":"+Srv->GetServerName()+" FMODE "+c->name+" "+modeline);
3302 virtual void ProtoSendMetaData(void* opaque, int target_type, void* target, std::string extname, std::string extdata)
3304 TreeSocket* s = (TreeSocket*)opaque;
3307 if (target_type == TYPE_USER)
3309 userrec* u = (userrec*)target;
3310 s->WriteLine(":"+Srv->GetServerName()+" METADATA "+u->nick+" "+extname+" :"+extdata);
3312 else if (target_type == TYPE_OTHER)
3314 s->WriteLine(":"+Srv->GetServerName()+" METADATA * "+extname+" :"+extdata);
3316 else if (target_type == TYPE_CHANNEL)
3318 chanrec* c = (chanrec*)target;
3319 s->WriteLine(":"+Srv->GetServerName()+" METADATA "+c->name+" "+extname+" :"+extdata);
3324 virtual void OnEvent(Event* event)
3326 if (event->GetEventID() == "send_metadata")
3328 std::deque<std::string>* params = (std::deque<std::string>*)event->GetData();
3329 if (params->size() < 3)
3331 (*params)[2] = ":" + (*params)[2];
3332 DoOneToMany(Srv->GetServerName(),"METADATA",*params);
3336 virtual ~ModuleSpanningTree()
3340 virtual Version GetVersion()
3342 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
3345 void Implements(char* List)
3347 List[I_OnPreCommand] = List[I_OnGetServerDescription] = List[I_OnUserInvite] = List[I_OnPostLocalTopicChange] = 1;
3348 List[I_OnWallops] = List[I_OnUserNotice] = List[I_OnUserMessage] = List[I_OnBackgroundTimer] = 1;
3349 List[I_OnUserJoin] = List[I_OnChangeHost] = List[I_OnChangeName] = List[I_OnUserPart] = List[I_OnUserConnect] = 1;
3350 List[I_OnUserQuit] = List[I_OnUserPostNick] = List[I_OnUserKick] = List[I_OnRemoteKill] = List[I_OnRehash] = 1;
3351 List[I_OnOper] = List[I_OnAddGLine] = List[I_OnAddZLine] = List[I_OnAddQLine] = List[I_OnAddELine] = 1;
3352 List[I_OnDelGLine] = List[I_OnDelZLine] = List[I_OnDelQLine] = List[I_OnDelELine] = List[I_ProtoSendMode] = List[I_OnMode] = 1;
3353 List[I_OnStats] = List[I_ProtoSendMetaData] = List[I_OnEvent] = 1;
3356 /* It is IMPORTANT that m_spanningtree is the last module in the chain
3357 * so that any activity it sees is FINAL, e.g. we arent going to send out
3358 * a NICK message before m_cloaking has finished putting the +x on the user,
3360 * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
3361 * the module call queue.
3363 Priority Prioritize()
3365 return PRIORITY_LAST;
3370 class ModuleSpanningTreeFactory : public ModuleFactory
3373 ModuleSpanningTreeFactory()
3377 ~ModuleSpanningTreeFactory()
3381 virtual Module * CreateModule(Server* Me)
3383 TreeProtocolModule = new ModuleSpanningTree(Me);
3384 return TreeProtocolModule;
3390 extern "C" void * init_module( void )
3392 return new ModuleSpanningTreeFactory;