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 */
19 #include "configreader.h"
23 #include "commands/cmd_whois.h"
24 #include "commands/cmd_stats.h"
31 /** If you make a change which breaks the protocol, increment this.
32 * If you completely change the protocol, completely change the number.
34 * IMPORTANT: If you make changes, document your changes here, without fail:
35 * http://www.inspircd.org/wiki/List_of_protocol_changes_between_versions
37 * Failure to document your protocol changes will result in a painfully
38 * painful death by pain. You have been warned.
40 const long ProtocolVersion = 1102;
43 * The server list in InspIRCd is maintained as two structures
44 * which hold the data in different ways. Most of the time, we
45 * want to very quicky obtain three pieces of information:
47 * (1) The information on a server
48 * (2) The information on the server we must send data through
49 * to actually REACH the server we're after
50 * (3) Potentially, the child/parent objects of this server
52 * The InspIRCd spanning protocol provides easy access to these
53 * by storing the data firstly in a recursive structure, where
54 * each item references its parent item, and a dynamic list
55 * of child items, and another structure which stores the items
56 * hashed, linearly. This means that if we want to find a server
57 * by name quickly, we can look it up in the hash, avoiding
58 * any O(n) lookups. If however, during a split or sync, we want
59 * to apply an operation to a server, and any of its child objects
60 * we can resort to recursion to walk the tree structure.
61 * Any socket can have one of five states at any one time.
62 * The LISTENER state indicates a socket which is listening
63 * for connections. It cannot receive data itself, only incoming
65 * The CONNECTING state indicates an outbound socket which is
66 * waiting to be writeable.
67 * The WAIT_AUTH_1 state indicates the socket is outbound and
68 * has successfully connected, but has not yet sent and received
70 * The WAIT_AUTH_2 state indicates that the socket is inbound
71 * (allocated by a LISTENER) but has not yet sent and received
73 * The CONNECTED state represents a fully authorized, fully
76 enum ServerState { LISTENER, CONNECTING, WAIT_AUTH_1, WAIT_AUTH_2, CONNECTED };
78 /* Foward declarations */
82 class ModuleSpanningTree;
84 /* This hash_map holds the hash equivalent of the server
85 * tree, used for rapid linear lookups.
87 typedef nspace::hash_map<std::string, TreeServer*, nspace::hash<string>, irc::StrHashComp> server_hash;
89 typedef std::map<TreeServer*,TreeServer*> TreeServerList;
91 /** The Link class might as well be a struct,
92 * but this is C++ and we don't believe in structs (!).
93 * It holds the entire information of one <link>
94 * tag from the main config file. We maintain a list
95 * of them, and populate the list on rehash/load.
97 class Link : public classbase
103 std::string SendPass;
104 std::string RecvPass;
105 unsigned long AutoConnect;
106 time_t NextConnectTime;
107 std::string EncryptionKey;
108 bool HiddenFromStats;
109 std::string FailOver;
113 /** Contains helper functions and variables for this module,
114 * and keeps them out of the global namespace
116 class SpanningTreeUtilities
121 InspIRCd* ServerInstance;
125 ModuleSpanningTree* Creator;
126 /** Flatten links and /MAP for non-opers
129 /** Hide U-Lined servers in /MAP and /LINKS
132 /** Announce TS changes to channels on merge
134 bool AnnounceTSChange;
135 /** Synchronize timestamps between servers
138 /** Socket bindings for listening sockets
140 std::vector<TreeSocket*> Bindings;
141 /** This variable represents the root of the server tree
143 TreeServer *TreeRoot;
144 /** IPs allowed to link to us
146 std::vector<std::string> ValidIPs;
147 /** Hash of currently connected servers by name
149 server_hash serverlist;
150 /** Holds the data from the <link> tags in the conf
152 std::vector<Link> LinkBlocks;
154 /** Initialise utility class
156 SpanningTreeUtilities(InspIRCd* Instance, ModuleSpanningTree* Creator);
157 /** Destroy class and free listeners etc
159 ~SpanningTreeUtilities();
160 /** Send a message from this server to one other local or remote
162 bool DoOneToOne(const std::string &prefix, const std::string &command, std::deque<std::string> ¶ms, std::string target);
163 /** Send a message from this server to all but one other, local or remote
165 bool DoOneToAllButSender(const std::string &prefix, const std::string &command, std::deque<std::string> ¶ms, std::string omit);
166 /** Send a message from this server to all but one other, local or remote
168 bool DoOneToAllButSender(const char* prefix, const char* command, std::deque<std::string> ¶ms, std::string omit);
169 /** Send a message from this server to all others
171 bool DoOneToMany(const std::string &prefix, const std::string &command, std::deque<std::string> ¶ms);
172 /** Send a message from this server to all others
174 bool DoOneToMany(const char* prefix, const char* command, std::deque<std::string> ¶ms);
175 /** Send a message from this server to all others, without doing any processing on the command (e.g. send it as-is with colons and all)
177 bool DoOneToAllButSenderRaw(const std::string &data, const std::string &omit, const std::string &prefix, const irc::string &command, std::deque<std::string> ¶ms);
178 /** Read the spanningtree module's tags from the config file
180 void ReadConfiguration(bool rebind);
181 /** Add a server to the server list for GetListOfServersForChannel
183 void AddThisServer(TreeServer* server, TreeServerList &list);
184 /** Compile a list of servers which contain members of channel c
186 void GetListOfServersForChannel(chanrec* c, TreeServerList &list, char status, const CUList &exempt_list);
187 /** Find a server by name
189 TreeServer* FindServer(const std::string &ServerName);
190 /** Find a route to a server by name
192 TreeServer* BestRouteTo(const std::string &ServerName);
193 /** Find a server by glob mask
195 TreeServer* FindServerMask(const std::string &ServerName);
196 /** Returns true if this is a server name we recognise
198 bool IsServer(const std::string &ServerName);
199 /** Attempt to connect to the failover link of link x
201 void DoFailOver(Link* x);
202 /** Find a link tag from a server name
204 Link* FindLink(const std::string& name);
208 /** Each server in the tree is represented by one class of
209 * type TreeServer. A locally connected TreeServer can
210 * have a class of type TreeSocket associated with it, for
211 * remote servers, the TreeSocket entry will be NULL.
212 * Each server also maintains a pointer to its parent
213 * (NULL if this server is ours, at the top of the tree)
214 * and a pointer to its "Route" (see the comments in the
215 * constructors below), and also a dynamic list of pointers
216 * to its children which can be iterated recursively
217 * if required. Creating or deleting objects of type
218 i* TreeServer automatically maintains the hash_map of
219 * TreeServer items, deleting and inserting them as they
220 * are created and destroyed.
222 class TreeServer : public classbase
224 InspIRCd* ServerInstance; /* Creator */
225 TreeServer* Parent; /* Parent entry */
226 TreeServer* Route; /* Route entry */
227 std::vector<TreeServer*> Children; /* List of child objects */
228 irc::string ServerName; /* Server's name */
229 std::string ServerDesc; /* Server's description */
230 std::string VersionString; /* Version string or empty string */
231 int UserCount; /* Not used in this version */
232 int OperCount; /* Not used in this version */
233 TreeSocket* Socket; /* For directly connected servers this points at the socket object */
234 time_t NextPing; /* After this time, the server should be PINGed*/
235 bool LastPingWasGood; /* True if the server responded to the last PING with a PONG */
236 SpanningTreeUtilities* Utils; /* Utility class */
240 /** We don't use this constructor. Its a dummy, and won't cause any insertion
241 * of the TreeServer into the hash_map. See below for the two we DO use.
243 TreeServer(SpanningTreeUtilities* Util, InspIRCd* Instance) : ServerInstance(Instance), Utils(Util)
249 UserCount = OperCount = 0;
250 VersionString = ServerInstance->GetVersionString();
253 /** We use this constructor only to create the 'root' item, Utils->TreeRoot, which
254 * represents our own server. Therefore, it has no route, no parent, and
255 * no socket associated with it. Its version string is our own local version.
257 TreeServer(SpanningTreeUtilities* Util, InspIRCd* Instance, std::string Name, std::string Desc) : ServerInstance(Instance), ServerName(Name.c_str()), ServerDesc(Desc), Utils(Util)
261 UserCount = ServerInstance->UserCount();
262 OperCount = ServerInstance->OperCount();
263 VersionString = ServerInstance->GetVersionString();
265 Socket = NULL; /* Fix by brain */
269 /** When we create a new server, we call this constructor to initialize it.
270 * This constructor initializes the server's Route and Parent, and sets up
271 * its ping counters so that it will be pinged one minute from now.
273 TreeServer(SpanningTreeUtilities* Util, InspIRCd* Instance, std::string Name, std::string Desc, TreeServer* Above, TreeSocket* Sock)
274 : ServerInstance(Instance), Parent(Above), ServerName(Name.c_str()), ServerDesc(Desc), Socket(Sock), Utils(Util)
277 UserCount = OperCount = 0;
278 this->SetNextPingTime(time(NULL) + 60);
281 /* find the 'route' for this server (e.g. the one directly connected
282 * to the local server, which we can use to reach it)
284 * In the following example, consider we have just added a TreeServer
285 * class for server G on our network, of which we are server A.
286 * To route traffic to G (marked with a *) we must send the data to
287 * B (marked with a +) so this algorithm initializes the 'Route'
288 * value to point at whichever server traffic must be routed through
289 * to get here. If we were to try this algorithm with server B,
290 * the Route pointer would point at its own object ('this').
300 * We only run this algorithm when a server is created, as
301 * the routes remain constant while ever the server exists, and
302 * do not need to be re-calculated.
306 if (Route == Utils->TreeRoot)
312 while (this->Route->GetParent() != Utils->TreeRoot)
314 this->Route = Route->GetParent();
318 /* Because recursive code is slow and takes a lot of resources,
319 * we store two representations of the server tree. The first
320 * is a recursive structure where each server references its
321 * children and its parent, which is used for netbursts and
322 * netsplits to dump the whole dataset to the other server,
323 * and the second is used for very fast lookups when routing
324 * messages and is instead a hash_map, where each item can
325 * be referenced by its server name. The AddHashEntry()
326 * call below automatically inserts each TreeServer class
327 * into the hash_map as it is created. There is a similar
328 * maintainance call in the destructor to tidy up deleted
332 this->AddHashEntry();
335 int QuitUsers(const std::string &reason)
337 ServerInstance->Log(DEBUG,"Removing all users from server %s",this->ServerName.c_str());
338 const char* reason_s = reason.c_str();
339 std::vector<userrec*> time_to_die;
340 for (user_hash::iterator n = ServerInstance->clientlist.begin(); n != ServerInstance->clientlist.end(); n++)
342 if (!strcmp(n->second->server, this->ServerName.c_str()))
344 time_to_die.push_back(n->second);
347 for (std::vector<userrec*>::iterator n = time_to_die.begin(); n != time_to_die.end(); n++)
349 userrec* a = (userrec*)*n;
350 ServerInstance->Log(DEBUG,"Kill %s fd=%d",a->nick,a->GetFd());
352 userrec::QuitUser(ServerInstance,a,reason_s);
354 return time_to_die.size();
357 /** This method is used to add the structure to the
358 * hash_map for linear searches. It is only called
359 * by the constructors.
363 server_hash::iterator iter = Utils->serverlist.find(this->ServerName.c_str());
364 if (iter == Utils->serverlist.end())
365 Utils->serverlist[this->ServerName.c_str()] = this;
368 /** This method removes the reference to this object
369 * from the hash_map which is used for linear searches.
370 * It is only called by the default destructor.
374 server_hash::iterator iter = Utils->serverlist.find(this->ServerName.c_str());
375 if (iter != Utils->serverlist.end())
376 Utils->serverlist.erase(iter);
379 /** These accessors etc should be pretty self-
382 TreeServer* GetRoute()
387 std::string GetName()
389 return ServerName.c_str();
392 std::string GetDesc()
397 std::string GetVersion()
399 return VersionString;
402 void SetNextPingTime(time_t t)
405 LastPingWasGood = false;
408 time_t NextPingTime()
413 bool AnsweredLastPing()
415 return LastPingWasGood;
420 LastPingWasGood = true;
443 TreeSocket* GetSocket()
448 TreeServer* GetParent()
453 void SetVersion(const std::string &Version)
455 VersionString = Version;
458 unsigned int ChildCount()
460 return Children.size();
463 TreeServer* GetChild(unsigned int n)
465 if (n < Children.size())
467 /* Make sure they cant request
468 * an out-of-range object. After
469 * all we know what these programmer
470 * types are like *grin*.
480 void AddChild(TreeServer* Child)
482 Children.push_back(Child);
485 bool DelChild(TreeServer* Child)
487 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
498 /** Removes child nodes of this node, and of that node, etc etc.
499 * This is used during netsplits to automatically tidy up the
500 * server tree. It is slow, we don't use it for much else.
504 bool stillchildren = true;
505 while (stillchildren)
507 stillchildren = false;
508 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
510 TreeServer* s = (TreeServer*)*a;
514 stillchildren = true;
523 /* We'd better tidy up after ourselves, eh? */
524 this->DelHashEntry();
528 /** Yay for fast searches!
529 * This is hundreds of times faster than recursion
530 * or even scanning a linked list, especially when
531 * there are more than a few servers to deal with.
534 TreeServer* SpanningTreeUtilities::FindServer(const std::string &ServerName)
536 server_hash::iterator iter;
537 iter = serverlist.find(ServerName.c_str());
538 if (iter != serverlist.end())
548 /** Returns the locally connected server we must route a
549 * message through to reach server 'ServerName'. This
550 * only applies to one-to-one and not one-to-many routing.
551 * See the comments for the constructor of TreeServer
554 TreeServer* SpanningTreeUtilities::BestRouteTo(const std::string &ServerName)
556 if (ServerName.c_str() == TreeRoot->GetName())
558 TreeServer* Found = FindServer(ServerName);
561 return Found->GetRoute();
569 /** Find the first server matching a given glob mask.
570 * Theres no find-using-glob method of hash_map [awwww :-(]
571 * so instead, we iterate over the list using an iterator
572 * and match each one until we get a hit. Yes its slow,
575 TreeServer* SpanningTreeUtilities::FindServerMask(const std::string &ServerName)
577 for (server_hash::iterator i = serverlist.begin(); i != serverlist.end(); i++)
579 if (match(i->first.c_str(),ServerName.c_str()))
585 /* A convenient wrapper that returns true if a server exists */
586 bool SpanningTreeUtilities::IsServer(const std::string &ServerName)
588 return (FindServer(ServerName) != NULL);
594 class cmd_rconnect : public command_t
597 SpanningTreeUtilities* Utils;
599 cmd_rconnect (InspIRCd* Instance, Module* Callback, SpanningTreeUtilities* Util) : command_t(Instance, "RCONNECT", 'o', 2), Creator(Callback), Utils(Util)
601 this->source = "m_spanningtree.so";
602 syntax = "<remote-server-mask> <servermask>";
605 CmdResult Handle (const char** parameters, int pcnt, userrec *user)
607 user->WriteServ("NOTICE %s :*** RCONNECT: Sending remote connect to \002%s\002 to connect server \002%s\002.",user->nick,parameters[0],parameters[1]);
608 /* Is this aimed at our server? */
609 if (ServerInstance->MatchText(ServerInstance->Config->ServerName,parameters[0]))
611 /* Yes, initiate the given connect */
612 ServerInstance->SNO->WriteToSnoMask('l',"Remote CONNECT from %s matching \002%s\002, connecting server \002%s\002",user->nick,parameters[0],parameters[1]);
614 para[0] = parameters[1];
615 std::string original_command = std::string("CONNECT ") + parameters[1];
616 Creator->OnPreCommand("CONNECT", para, 1, user, true, original_command);
627 /** Every SERVER connection inbound or outbound is represented by
628 * an object of type TreeSocket.
629 * TreeSockets, being inherited from InspSocket, can be tied into
630 * the core socket engine, and we cn therefore receive activity events
631 * for them, just like activex objects on speed. (yes really, that
632 * is a technical term!) Each of these which relates to a locally
633 * connected server is assocated with it, by hooking it onto a
634 * TreeSocket class using its constructor. In this way, we can
635 * maintain a list of servers, some of which are directly connected,
636 * some of which are not.
638 class TreeSocket : public InspSocket
640 SpanningTreeUtilities* Utils;
642 std::string in_buffer;
643 ServerState LinkState;
644 std::string InboundServerName;
645 std::string InboundDescription;
647 int num_lost_servers;
649 bool LastPingWasGood;
653 unsigned int keylength;
654 std::string ModuleList;
655 std::map<std::string,std::string> CapKeys;
659 /** Because most of the I/O gubbins are encapsulated within
660 * InspSocket, we just call the superclass constructor for
661 * most of the action, and append a few of our own values
664 TreeSocket(SpanningTreeUtilities* Util, InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime)
665 : InspSocket(SI, host, port, listening, maxtime), Utils(Util)
668 this->LinkState = LISTENER;
670 this->ctx_out = NULL;
673 TreeSocket(SpanningTreeUtilities* Util, InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime, std::string ServerName)
674 : InspSocket(SI, host, port, listening, maxtime), Utils(Util)
677 this->LinkState = CONNECTING;
679 this->ctx_out = NULL;
682 /** When a listening socket gives us a new file descriptor,
683 * we must associate it with a socket without creating a new
684 * connection. This constructor is used for this purpose.
686 TreeSocket(SpanningTreeUtilities* Util, InspIRCd* SI, int newfd, char* ip)
687 : InspSocket(SI, newfd, ip), Utils(Util)
689 this->LinkState = WAIT_AUTH_1;
691 this->ctx_out = NULL;
692 this->SendCapabilities();
703 void InitAES(std::string key,std::string SName)
710 Instance->Log(DEBUG,"Initialized AES key %s",key.c_str());
711 // key must be 16, 24, 32 etc bytes (multiple of 8)
712 keylength = key.length();
713 if (!(keylength == 16 || keylength == 24 || keylength == 32))
715 this->Instance->SNO->WriteToSnoMask('l',"\2ERROR\2: Key length for encryptionkey is not 16, 24 or 32 bytes in length!");
716 Instance->Log(DEBUG,"Key length not 16, 24 or 32 characters!");
720 if (this->GetState() != I_ERROR)
722 this->Instance->SNO->WriteToSnoMask('l',"\2AES\2: Initialized %d bit encryption to server %s",keylength*8,SName.c_str());
723 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\
724 \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);
725 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\
726 \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);
731 /** When an outbound connection finishes connecting, we receive
732 * this event, and must send our SERVER string to the other
733 * side. If the other side is happy, as outlined in the server
734 * to server docs on the inspircd.org site, the other side
735 * will then send back its own server string.
737 virtual bool OnConnected()
739 if (this->LinkState == CONNECTING)
741 /* we do not need to change state here. */
742 for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
744 if (x->Name == this->myhost)
746 this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] started.");
747 this->SendCapabilities();
748 if (x->EncryptionKey != "")
750 if (!(x->EncryptionKey.length() == 16 || x->EncryptionKey.length() == 24 || x->EncryptionKey.length() == 32))
752 this->Instance->SNO->WriteToSnoMask('l',"\2WARNING\2: Your encryption key is NOT 16, 24 or 32 characters in length, encryption will \2NOT\2 be enabled.");
756 this->WriteLine(std::string("AES ")+this->Instance->Config->ServerName);
757 this->InitAES(x->EncryptionKey,x->Name.c_str());
760 /* found who we're supposed to be connecting to, send the neccessary gubbins. */
761 this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc);
766 /* There is a (remote) chance that between the /CONNECT and the connection
767 * being accepted, some muppet has removed the <link> block and rehashed.
768 * If that happens the connection hangs here until it's closed. Unlikely
769 * and rather harmless.
771 this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2 lost link tag(!)");
775 virtual void OnError(InspSocketError e)
777 /* We don't handle this method, because all our
778 * dirty work is done in OnClose() (see below)
779 * which is still called on error conditions too.
781 if (e == I_ERR_CONNECT)
783 this->Instance->SNO->WriteToSnoMask('l',"Connection failed: Connection to \002"+myhost+"\002 refused");
784 Link* MyLink = Utils->FindLink(myhost);
786 Utils->DoFailOver(MyLink);
790 virtual int OnDisconnect()
792 /* For the same reason as above, we don't
793 * handle OnDisconnect()
798 /** Recursively send the server tree with distances as hops.
799 * This is used during network burst to inform the other server
800 * (and any of ITS servers too) of what servers we know about.
801 * If at any point any of these servers already exist on the other
802 * end, our connection may be terminated. The hopcounts given
803 * by this function are relative, this doesn't matter so long as
804 * they are all >1, as all the remote servers re-calculate them
805 * to be relative too, with themselves as hop 0.
807 void SendServers(TreeServer* Current, TreeServer* s, int hops)
810 for (unsigned int q = 0; q < Current->ChildCount(); q++)
812 TreeServer* recursive_server = Current->GetChild(q);
813 if (recursive_server != s)
815 snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str());
816 this->WriteLine(command);
817 this->WriteLine(":"+recursive_server->GetName()+" VERSION :"+recursive_server->GetVersion());
818 /* down to next level */
819 this->SendServers(recursive_server, s, hops+1);
824 std::string MyCapabilities()
826 std::vector<std::string> modlist;
827 std::string capabilities = "";
829 for (int i = 0; i <= this->Instance->GetModuleCount(); i++)
831 if (this->Instance->modules[i]->GetVersion().Flags & VF_COMMON)
832 modlist.push_back(this->Instance->Config->module_names[i]);
834 sort(modlist.begin(),modlist.end());
835 for (unsigned int i = 0; i < modlist.size(); i++)
838 capabilities = capabilities + ",";
839 capabilities = capabilities + modlist[i];
844 void SendCapabilities()
846 irc::commasepstream modulelist(MyCapabilities());
848 this->WriteLine("CAPAB START");
850 /* Send module names, split at 509 length */
851 std::string item = "*";
852 std::string line = "CAPAB MODULES ";
853 while ((item = modulelist.GetToken()) != "")
855 if (line.length() + item.length() + 1 > 509)
857 this->WriteLine(line);
858 line = "CAPAB MODULES ";
861 if (line != "CAPAB MODULES ")
866 if (line != "CAPAB MODULES ")
867 this->WriteLine(line);
874 #ifdef SUPPORT_IP6LINKS
877 this->WriteLine("CAPAB CAPABILITIES :NICKMAX="+ConvToStr(NICKMAX)+" HALFOP="+ConvToStr(this->Instance->Config->AllowHalfop)+" CHANMAX="+ConvToStr(CHANMAX)+" MAXMODES="+ConvToStr(MAXMODES)+" IDENTMAX="+ConvToStr(IDENTMAX)+" MAXQUIT="+ConvToStr(MAXQUIT)+" MAXTOPIC="+ConvToStr(MAXTOPIC)+" MAXKICK="+ConvToStr(MAXKICK)+" MAXGECOS="+ConvToStr(MAXGECOS)+" MAXAWAY="+ConvToStr(MAXAWAY)+" IP6NATIVE="+ConvToStr(ip6)+" IP6SUPPORT="+ConvToStr(ip6support)+" PROTOCOL="+ConvToStr(ProtocolVersion));
879 this->WriteLine("CAPAB END");
882 /* Check a comma seperated list for an item */
883 bool HasItem(const std::string &list, const std::string &item)
885 irc::commasepstream seplist(list);
887 std::string item2 = "*";
888 while ((item2 = seplist.GetToken()) != "")
897 /* Isolate and return the elements that are different between two comma seperated lists */
898 std::string ListDifference(const std::string &one, const std::string &two)
900 irc::commasepstream list_one(one);
901 std::string item = "*";
902 std::string result = "";
903 while ((item = list_one.GetToken()) != "")
905 if (!HasItem(two, item))
914 bool Capab(const std::deque<std::string> ¶ms)
916 if (params.size() < 1)
918 this->WriteLine("ERROR :Invalid number of parameters for CAPAB - Mismatched version");
922 if (params[0] == "START")
924 this->ModuleList = "";
925 this->CapKeys.clear();
927 else if (params[0] == "END")
929 std::string reason = "";
931 #ifdef SUPPORT_IP6LINKS
934 /* Compare ModuleList and check CapKeys...
935 * Maybe this could be tidier? -- Brain
937 if ((this->ModuleList != this->MyCapabilities()) && (this->ModuleList.length()))
939 std::string diff = ListDifference(this->ModuleList, this->MyCapabilities());
942 diff = "your server:" + ListDifference(this->MyCapabilities(), this->ModuleList);
946 diff = "this server:" + diff;
948 if (diff.length() == 12)
949 reason = "Module list in CAPAB is not alphabetically ordered, cannot compare lists.";
951 reason = "Modules loaded on these servers are not correctly matched, these modules are not loaded on " + diff;
954 if (((this->CapKeys.find("IP6SUPPORT") == this->CapKeys.end()) && (ip6support)) || ((this->CapKeys.find("IP6SUPPORT") != this->CapKeys.end()) && (this->CapKeys.find("IP6SUPPORT")->second != ConvToStr(ip6support))))
955 reason = "We don't both support linking to IPV6 servers";
957 if (((this->CapKeys.find("IP6NATIVE") != this->CapKeys.end()) && (this->CapKeys.find("IP6NATIVE")->second == "1")) && (!ip6support))
958 reason = "The remote server is IPV6 native, and we don't support linking to IPV6 servers";
960 if (((this->CapKeys.find("NICKMAX") == this->CapKeys.end()) || ((this->CapKeys.find("NICKMAX") != this->CapKeys.end()) && (this->CapKeys.find("NICKMAX")->second != ConvToStr(NICKMAX)))))
961 reason = "Maximum nickname lengths differ or remote nickname length not specified";
963 if (((this->CapKeys.find("PROTOCOL") == this->CapKeys.end()) || ((this->CapKeys.find("PROTOCOL") != this->CapKeys.end()) && (this->CapKeys.find("PROTOCOL")->second != ConvToStr(ProtocolVersion)))))
965 if (this->CapKeys.find("PROTOCOL") != this->CapKeys.end())
967 reason = "Mismatched protocol versions "+this->CapKeys.find("PROTOCOL")->second+" and "+ConvToStr(ProtocolVersion);
971 reason = "Protocol version not specified";
975 if (((this->CapKeys.find("HALFOP") == this->CapKeys.end()) && (Instance->Config->AllowHalfop)) || ((this->CapKeys.find("HALFOP") != this->CapKeys.end()) && (this->CapKeys.find("HALFOP")->second != ConvToStr(Instance->Config->AllowHalfop))))
976 reason = "We don't both have halfop support enabled/disabled identically";
978 if (((this->CapKeys.find("IDENTMAX") == this->CapKeys.end()) || ((this->CapKeys.find("IDENTMAX") != this->CapKeys.end()) && (this->CapKeys.find("IDENTMAX")->second != ConvToStr(IDENTMAX)))))
979 reason = "Maximum ident lengths differ or remote ident length not specified";
981 if (((this->CapKeys.find("CHANMAX") == this->CapKeys.end()) || ((this->CapKeys.find("CHANMAX") != this->CapKeys.end()) && (this->CapKeys.find("CHANMAX")->second != ConvToStr(CHANMAX)))))
982 reason = "Maximum channel lengths differ or remote channel length not specified";
984 if (((this->CapKeys.find("MAXMODES") == this->CapKeys.end()) || ((this->CapKeys.find("MAXMODES") != this->CapKeys.end()) && (this->CapKeys.find("MAXMODES")->second != ConvToStr(MAXMODES)))))
985 reason = "Maximum modes per line differ or remote modes per line not specified";
987 if (((this->CapKeys.find("MAXQUIT") == this->CapKeys.end()) || ((this->CapKeys.find("MAXQUIT") != this->CapKeys.end()) && (this->CapKeys.find("MAXQUIT")->second != ConvToStr(MAXQUIT)))))
988 reason = "Maximum quit lengths differ or remote quit length not specified";
990 if (((this->CapKeys.find("MAXTOPIC") == this->CapKeys.end()) || ((this->CapKeys.find("MAXTOPIC") != this->CapKeys.end()) && (this->CapKeys.find("MAXTOPIC")->second != ConvToStr(MAXTOPIC)))))
991 reason = "Maximum topic lengths differ or remote topic length not specified";
993 if (((this->CapKeys.find("MAXKICK") == this->CapKeys.end()) || ((this->CapKeys.find("MAXKICK") != this->CapKeys.end()) && (this->CapKeys.find("MAXKICK")->second != ConvToStr(MAXKICK)))))
994 reason = "Maximum kick lengths differ or remote kick length not specified";
996 if (((this->CapKeys.find("MAXGECOS") == this->CapKeys.end()) || ((this->CapKeys.find("MAXGECOS") != this->CapKeys.end()) && (this->CapKeys.find("MAXGECOS")->second != ConvToStr(MAXGECOS)))))
997 reason = "Maximum GECOS (fullname) lengths differ or remote GECOS length not specified";
999 if (((this->CapKeys.find("MAXAWAY") == this->CapKeys.end()) || ((this->CapKeys.find("MAXAWAY") != this->CapKeys.end()) && (this->CapKeys.find("MAXAWAY")->second != ConvToStr(MAXAWAY)))))
1000 reason = "Maximum awaymessage lengths differ or remote awaymessage length not specified";
1002 if (reason.length())
1004 this->WriteLine("ERROR :CAPAB negotiation failed: "+reason);
1008 else if ((params[0] == "MODULES") && (params.size() == 2))
1010 if (!this->ModuleList.length())
1012 this->ModuleList.append(params[1]);
1016 this->ModuleList.append(",");
1017 this->ModuleList.append(params[1]);
1020 else if ((params[0] == "CAPABILITIES") && (params.size() == 2))
1022 irc::tokenstream capabs(params[1]);
1023 std::string item = "*";
1024 while ((item = capabs.GetToken()) != "")
1026 /* Process each key/value pair */
1027 std::string::size_type equals = item.rfind('=');
1028 if (equals != std::string::npos)
1030 std::string var = item.substr(0, equals);
1031 std::string value = item.substr(equals+1, item.length());
1032 this->Instance->Log(DEBUG,"Key='%s' Value='%s'",var.c_str(),value.c_str());
1033 CapKeys[var] = value;
1041 /** This function forces this server to quit, removing this server
1042 * and any users on it (and servers and users below that, etc etc).
1043 * It's very slow and pretty clunky, but luckily unless your network
1044 * is having a REAL bad hair day, this function shouldnt be called
1045 * too many times a month ;-)
1047 void SquitServer(std::string &from, TreeServer* Current)
1049 /* recursively squit the servers attached to 'Current'.
1050 * We're going backwards so we don't remove users
1051 * while we still need them ;)
1053 for (unsigned int q = 0; q < Current->ChildCount(); q++)
1055 TreeServer* recursive_server = Current->GetChild(q);
1056 this->SquitServer(from,recursive_server);
1058 /* Now we've whacked the kids, whack self */
1060 num_lost_users += Current->QuitUsers(from);
1063 /** This is a wrapper function for SquitServer above, which
1064 * does some validation first and passes on the SQUIT to all
1065 * other remaining servers.
1067 void Squit(TreeServer* Current, const std::string &reason)
1069 if ((Current) && (Current != Utils->TreeRoot))
1071 Event rmode((char*)Current->GetName().c_str(), (Module*)Utils->Creator, "lost_server");
1072 rmode.Send(Instance);
1074 std::deque<std::string> params;
1075 params.push_back(Current->GetName());
1076 params.push_back(":"+reason);
1077 Utils->DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
1078 if (Current->GetParent() == Utils->TreeRoot)
1080 this->Instance->WriteOpers("Server \002"+Current->GetName()+"\002 split: "+reason);
1084 this->Instance->WriteOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
1086 num_lost_servers = 0;
1088 std::string from = Current->GetParent()->GetName()+" "+Current->GetName();
1089 SquitServer(from, Current);
1091 Current->GetParent()->DelChild(Current);
1093 this->Instance->WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
1097 Instance->Log(DEFAULT,"Squit from unknown server");
1101 /** FMODE command - server mode with timestamp checks */
1102 bool ForceMode(const std::string &source, std::deque<std::string> ¶ms)
1104 /* Chances are this is a 1.0 FMODE without TS */
1105 if (params.size() < 3)
1107 this->WriteLine("ERROR :Version 1.0 FMODE sent to version 1.1 server");
1112 std::string sourceserv;
1114 /* Are we dealing with an FMODE from a user, or from a server? */
1115 userrec* who = this->Instance->FindNick(source);
1118 /* FMODE from a user, set sourceserv to the users server name */
1119 sourceserv = who->server;
1123 /* FMODE from a server, create a fake user to receive mode feedback */
1124 who = new userrec(this->Instance);
1125 who->SetFd(FD_MAGIC_NUMBER);
1126 smode = true; /* Setting this flag tells us we should free the userrec later */
1127 sourceserv = source; /* Set sourceserv to the actual source string */
1129 const char* modelist[64];
1132 memset(&modelist,0,sizeof(modelist));
1133 for (unsigned int q = 0; (q < params.size()) && (q < 64); q++)
1137 /* The timestamp is in this position.
1138 * We don't want to pass that up to the
1139 * server->client protocol!
1141 TS = atoi(params[q].c_str());
1145 /* Everything else is fine to append to the modelist */
1146 modelist[n++] = params[q].c_str();
1150 /* Extract the TS value of the object, either userrec or chanrec */
1151 userrec* dst = this->Instance->FindNick(params[0]);
1152 chanrec* chan = NULL;
1160 chan = this->Instance->FindChan(params[0]);
1166 /* Oops, channel doesnt exist! */
1170 /* TS is equal: Merge the mode changes, use voooodoooooo on modes
1175 Instance->Log(DEBUG,"Entering TS equality check");
1176 ModeHandler* mh = NULL;
1177 unsigned long paramptr = 3;
1178 std::string to_bounce = "";
1179 std::string to_keep = "";
1180 std::vector<std::string> params_to_keep;
1181 std::string params_to_bounce = "";
1183 char cur_change = 1;
1184 char old_change = 0;
1185 char old_bounce_change = 0;
1186 /* Merge modes, basically do special stuff to mode with params */
1187 for (std::string::iterator x = params[2].begin(); x != params[2].end(); x++)
1200 /* We only care about whats being set,
1201 * not whats being unset
1203 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1205 if ((mh) && (mh->GetNumParams(adding) > 0) && (!mh->IsListMode()))
1207 /* We only want to do special things to
1208 * modes with parameters, we are going to rewrite
1212 adding ? cur_change = '+' : cur_change = '-';
1214 ret = mh->ModeSet(smode ? NULL : who, dst, chan, params[paramptr]);
1216 /* The mode is set here, check which we should keep */
1219 bool which_to_keep = mh->CheckTimeStamp(TS, ourTS, params[paramptr], ret.second, chan);
1221 if (which_to_keep == true)
1223 /* Keep ours, bounce theirs:
1224 * Send back ours to them and
1225 * drop their mode changs
1227 adding ? cur_change = '+' : cur_change = '-';
1228 if (cur_change != old_bounce_change)
1229 to_bounce += cur_change;
1231 old_bounce_change = cur_change;
1233 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1234 params_to_bounce.append(" ").append(ret.second);
1238 /* Keep theirs: Accept their mode change,
1241 adding ? cur_change = '+' : cur_change = '-';
1242 if (cur_change != old_change)
1243 to_keep += cur_change;
1245 old_change = cur_change;
1247 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1248 params_to_keep.push_back(params[paramptr]);
1253 /* Mode isnt set here, we want it */
1254 adding ? cur_change = '+' : cur_change = '-';
1255 if (cur_change != old_change)
1256 to_keep += cur_change;
1258 old_change = cur_change;
1260 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1261 params_to_keep.push_back(params[paramptr]);
1268 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1272 adding ? cur_change = '+' : cur_change = '-';
1274 /* Just keep this, safe to merge with no checks
1275 * it has no parameters
1278 if (cur_change != old_change)
1279 to_keep += cur_change;
1281 old_change = cur_change;
1283 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1285 Instance->Log(DEBUG,"Mode removal %d %d",adding, mh->GetNumParams(adding));
1286 params_to_keep.push_back(params[paramptr++]);
1293 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1297 /* Taking a mode away */
1298 adding ? cur_change = '+' : cur_change = '-';
1300 if (cur_change != old_change)
1301 to_keep += cur_change;
1303 old_change = cur_change;
1305 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1306 params_to_keep.push_back(params[paramptr++]);
1313 if (to_bounce.length())
1315 std::deque<std::string> newparams;
1316 newparams.push_back(params[0]);
1317 newparams.push_back(ConvToStr(ourTS));
1318 newparams.push_back(to_bounce+params_to_bounce);
1319 Instance->Log(DEBUG,"BOUNCE BACK: %s",(to_bounce+params_to_bounce).c_str());
1320 Utils->DoOneToOne(this->Instance->Config->ServerName,"FMODE",newparams,sourceserv);
1323 if (to_keep.length())
1327 modelist[0] = params[0].c_str();
1328 modelist[1] = to_keep.c_str();
1330 if (params_to_keep.size() > 0)
1332 for (q = 0; (q < params_to_keep.size()) && (q < 64); q++)
1334 Instance->Log(DEBUG,"KEEP Item %d of %d: %s", q, params_to_keep.size(), params_to_keep[q].c_str());
1335 modelist[n++] = params_to_keep[q].c_str();
1341 Instance->Log(DEBUG,"Send mode");
1342 this->Instance->SendMode(modelist, n, who);
1346 Instance->Log(DEBUG,"Send mode client");
1347 this->Instance->CallCommandHandler("MODE", modelist, n, who);
1350 /* HOT POTATO! PASS IT ON! */
1351 Utils->DoOneToAllButSender(source,"FMODE",params,sourceserv);
1355 /* U-lined servers always win regardless of their TS */
1356 if ((TS > ourTS) && (!this->Instance->ULine(source.c_str())))
1358 /* Bounce the mode back to its sender.* We use our lower TS, so the other end
1359 * SHOULD accept it, if its clock is right.
1361 * NOTE: We should check that we arent bouncing anything thats already set at this end.
1362 * If we are, bounce +ourmode to 'reinforce' it. This prevents desyncs.
1363 * e.g. They send +l 50, we have +l 10 set. rather than bounce -l 50, we bounce +l 10.
1365 * Thanks to jilles for pointing out this one-hell-of-an-issue before i even finished
1366 * writing the code. It took me a while to come up with this solution.
1368 * XXX: BE SURE YOU UNDERSTAND THIS CODE FULLY BEFORE YOU MESS WITH IT.
1371 std::deque<std::string> newparams; /* New parameter list we send back */
1372 newparams.push_back(params[0]); /* Target, user or channel */
1373 newparams.push_back(ConvToStr(ourTS)); /* Timestamp value of the target */
1374 newparams.push_back(""); /* This contains the mode string. For now
1375 * it's empty, we fill it below.
1378 /* Intelligent mode bouncing. Don't just invert, reinforce any modes which are already
1379 * set to avoid a desync here.
1381 std::string modebounce = "";
1384 ModeHandler* mh = NULL;
1385 char cur_change = 1;
1386 char old_change = 0;
1387 for (std::string::iterator x = params[2].begin(); x != params[2].end(); x++)
1389 /* Iterate over all mode chars in the sent set */
1392 /* Adding or subtracting modes? */
1400 /* Find the mode handler for this mode */
1401 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1403 /* Got a mode handler?
1404 * This also prevents us bouncing modes we have no handler for.
1411 /* Does the mode require a parameter right now?
1412 * If it does, fetch it if we can
1414 if ((mh->GetNumParams(adding) > 0) && (t < params.size()))
1417 /* Call the ModeSet method to determine if its set with the
1418 * given parameter here or not.
1420 ret = mh->ModeSet(smode ? NULL : who, dst, chan, p);
1422 /* XXX: Really. Dont ask.
1423 * Determine from if its set combined with what the current
1424 * 'state' is (adding or not) as to wether we should 'invert'
1425 * or 'reinforce' the mode change
1427 (!ret.first ? (adding ? cur_change = '-' : cur_change = '+') : (!adding ? cur_change = '-' : cur_change = '+'));
1429 /* Quickly determine if we have 'flipped' from + to -,
1430 * or - to +, to prevent unneccessary +/- chars in the
1431 * output string that waste bandwidth
1433 if (cur_change != old_change)
1434 modebounce += cur_change;
1435 old_change = cur_change;
1437 /* Add the mode character to the output string */
1438 modebounce += mh->GetModeChar();
1440 /* We got a parameter back from ModeHandler::ModeSet,
1441 * are we supposed to be sending one out right now?
1443 if (ret.second.length())
1445 if (mh->GetNumParams(cur_change == '+') > 0)
1446 /* Yes we're supposed to be sending out
1447 * the parameter. Make sure it goes
1449 newparams.push_back(ret.second);
1457 /* Update the parameters for FMODE with the new 'bounced' string */
1458 newparams[2] = modebounce;
1459 /* Only send it back the way it came, no need to send it anywhere else */
1460 Utils->DoOneToOne(this->Instance->Config->ServerName,"FMODE",newparams,sourceserv);
1461 Instance->Log(DEBUG,"FMODE bounced intelligently, our TS less than theirs and the other server is NOT a uline.");
1465 Instance->Log(DEBUG,"Allow modes, TS lower for sender");
1466 /* The server was ulined, but something iffy is up with the TS.
1467 * Sound the alarm bells!
1469 if ((this->Instance->ULine(sourceserv.c_str())) && (TS > ourTS))
1471 this->Instance->WriteOpers("\2WARNING!\2 U-Lined server '%s' has bad TS for '%s' (accepted change): \2SYNC YOUR CLOCKS\2 to avoid this notice",sourceserv.c_str(),params[0].c_str());
1473 /* Allow the mode, route it to either server or user command handling */
1475 this->Instance->SendMode(modelist,n,who);
1477 this->Instance->CallCommandHandler("MODE", modelist, n, who);
1479 /* HOT POTATO! PASS IT ON! */
1480 Utils->DoOneToAllButSender(source,"FMODE",params,sourceserv);
1482 /* Are we supposed to free the userrec? */
1489 /** FTOPIC command */
1490 bool ForceTopic(const std::string &source, std::deque<std::string> ¶ms)
1492 if (params.size() != 4)
1494 time_t ts = atoi(params[1].c_str());
1495 std::string nsource = source;
1497 chanrec* c = this->Instance->FindChan(params[0]);
1500 if ((ts >= c->topicset) || (!*c->topic))
1502 std::string oldtopic = c->topic;
1503 strlcpy(c->topic,params[3].c_str(),MAXTOPIC);
1504 strlcpy(c->setby,params[2].c_str(),NICKMAX-1);
1506 /* if the topic text is the same as the current topic,
1507 * dont bother to send the TOPIC command out, just silently
1508 * update the set time and set nick.
1510 if (oldtopic != params[3])
1512 userrec* user = this->Instance->FindNick(source);
1515 c->WriteChannelWithServ(source.c_str(), "TOPIC %s :%s", c->name, c->topic);
1519 c->WriteChannel(user, "TOPIC %s :%s", c->name, c->topic);
1520 nsource = user->server;
1522 /* all done, send it on its way */
1523 params[3] = ":" + params[3];
1524 Utils->DoOneToAllButSender(source,"FTOPIC",params,nsource);
1533 /** FJOIN, similar to TS6 SJOIN, but not quite. */
1534 bool ForceJoin(const std::string &source, std::deque<std::string> ¶ms)
1536 /* 1.1 FJOIN works as follows:
1538 * Each FJOIN is sent along with a timestamp, and the side with the lowest
1539 * timestamp 'wins'. From this point on we will refer to this side as the
1540 * winner. The side with the higher timestamp loses, from this point on we
1541 * will call this side the loser or losing side. This should be familiar to
1542 * anyone who's dealt with dreamforge or TS6 before.
1544 * When two sides of a split heal and this occurs, the following things
1547 * If the timestamps are exactly equal, both sides merge their privilages
1548 * and users, as in InspIRCd 1.0 and ircd2.8. The channels have not been
1549 * re-created during a split, this is safe to do.
1552 * If the timestamps are NOT equal, the losing side removes all privilage
1553 * modes from all of its users that currently exist in the channel, before
1554 * introducing new users into the channel which are listed in the FJOIN
1555 * command's parameters. This means, all modes +ohv, and privilages added
1556 * by modules, such as +qa. The losing side then LOWERS its timestamp value
1557 * of the channel to match that of the winning side, and the modes of the
1558 * users of the winning side are merged in with the losing side. The loser
1559 * then sends out a set of FMODE commands which 'confirm' that it just
1560 * removed all privilage modes from its existing users, which allows for
1561 * services packages to still work correctly without needing to know the
1562 * timestamping rules which InspIRCd follows. In TS6 servers this is always
1563 * a problem, and services packages must contain code which explicitly
1564 * behaves as TS6 does, removing ops from the losing side of a split where
1565 * neccessary within its internal records, as this state information is
1566 * not explicitly echoed out in that protocol.
1568 * The winning side on the other hand will ignore all user modes from the
1569 * losing side, so only its own modes get applied. Life is simple for those
1570 * who succeed at internets. :-)
1572 * NOTE: Unlike TS6 and dreamforge and other protocols which have SJOIN,
1573 * FJOIN does not contain the simple-modes such as +iklmnsp. Why not,
1574 * you ask? Well, quite simply because we don't need to. They'll be sent
1575 * after the FJOIN by FMODE, and FMODE is timestamped, so in the event
1576 * the losing side sends any modes for the channel which shouldnt win,
1577 * they wont as their timestamp will be too high :-)
1580 if (params.size() < 3)
1583 char first[MAXBUF]; /* The first parameter of the mode command */
1584 char modestring[MAXBUF]; /* The mode sequence (2nd parameter) of the mode command */
1585 char* mode_users[127]; /* The values used by the mode command */
1586 memset(&mode_users,0,sizeof(mode_users)); /* Initialize mode parameters */
1587 mode_users[0] = first; /* Set this up to be our on-stack value */
1588 mode_users[1] = modestring; /* Same here as above */
1589 strcpy(modestring,"+"); /* Initialize the mode sequence to just '+' */
1590 unsigned int modectr = 2; /* Pointer to the third mode parameter (e.g. the one after the +-sequence) */
1592 userrec* who = NULL; /* User we are currently checking */
1593 std::string channel = params[0]; /* Channel name, as a string */
1594 time_t TS = atoi(params[1].c_str()); /* Timestamp given to us for remote side */
1595 bool created = false;
1597 /* Try and find the channel */
1598 chanrec* chan = this->Instance->FindChan(channel);
1600 /* Initialize channel name in the mode parameters */
1601 strlcpy(mode_users[0],channel.c_str(),MAXBUF);
1603 /* default TS is a high value, which if we dont have this
1604 * channel will let the other side apply their modes.
1606 time_t ourTS = Instance->Time(true)+600;
1608 /* Does this channel exist? if it does, get its REAL timestamp */
1612 created = true; /* don't perform deops, and set TS to correct time after processing. */
1614 /* In 1.1, if they have the newer channel, we immediately clear
1615 * all status modes from our users. We then accept their modes.
1616 * If WE have the newer channel its the other side's job to do this.
1617 * Note that this causes the losing server to send out confirming
1622 std::deque<std::string> param_list;
1624 /* Lower the TS here */
1625 if (Utils->AnnounceTSChange && chan)
1626 chan->WriteChannelWithServ(Instance->Config->ServerName,
1627 "NOTICE %s :TS for %s changed from %lu to %lu", chan->name, chan->name, ourTS, TS);
1629 param_list.push_back(channel);
1631 /* Zap all the privilage modes on our side, if the channel exists here */
1634 this->RemoveStatus(Instance->Config->ServerName, param_list);
1639 /* Put the final parameter of the FJOIN into a tokenstream ready to split it */
1640 irc::tokenstream users(params[2]);
1641 std::string item = "*";
1643 /* do this first, so our mode reversals are correctly received by other servers
1644 * if there is a TS collision.
1646 params[2] = ":" + params[2];
1647 Utils->DoOneToAllButSender(source,"FJOIN",params,source);
1649 /* Now, process every 'prefixes,nick' pair */
1652 /* Find next user */
1653 item = users.GetToken();
1655 const char* usr = item.c_str();
1657 /* Safety check just to make sure someones not sent us an FJOIN full of spaces
1658 * (is this even possible?) */
1661 const char* permissions = usr;
1663 char* nm = new char[MAXBUF];
1666 /* Iterate through all the prefix values, convert them from prefixes
1667 * to mode letters, and append them to the mode sequence
1669 while ((*permissions) && (*permissions != ',') && (ntimes < MAXBUF))
1671 ModeHandler* mh = Instance->Modes->FindPrefix(*permissions);
1674 /* This is a valid prefix */
1676 *tnm++ = mh->GetModeChar();
1680 /* Not a valid prefix...
1681 * danger bill bobbertson! (that's will robinsons older brother ;-) ...)
1683 this->Instance->WriteOpers("ERROR: We received a user with an unknown prefix '%c'. Closed connection to avoid a desync.",*permissions);
1684 this->WriteLine(std::string("ERROR :Invalid prefix '")+(*permissions)+"' in FJOIN");
1691 /* Null terminate modes */
1693 /* Advance past the comma, to the nick */
1696 /* Check the user actually exists */
1697 who = this->Instance->FindNick(usr);
1700 /* Did they get any modes? How many times? */
1701 strlcat(modestring, nm, MAXBUF);
1702 for (int k = 0; k < ntimes; k++)
1703 mode_users[modectr++] = strdup(usr);
1705 /* Free temporary buffer used for mode sequence */
1708 /* Check that the user's 'direction' is correct
1709 * based on the server sending the FJOIN. We must
1710 * check each nickname in turn, because the origin of
1711 * the FJOIN may be different to the origin of the nicks
1712 * in the command itself.
1714 TreeServer* route_back_again = Utils->BestRouteTo(who->server);
1715 if ((!route_back_again) || (route_back_again->GetSocket() != this))
1717 /* Oh dear oh dear. */
1718 Instance->Log(DEBUG,"Fake direction in FJOIN, user '%s'",who->nick);
1721 /* Finally, we can actually place the user into the channel.
1722 * We're sure its right. Final answer, phone a friend.
1724 chanrec::JoinUser(this->Instance, who, channel.c_str(), true, "");
1726 /* Have we already queued up MAXMODES modes with parameters
1727 * (+qaohv) ready to be sent to the server?
1729 if (modectr >= (MAXMODES-1))
1731 /* Only actually give the users any status if we lost
1732 * the FJOIN or drew (equal timestamps).
1733 * It isn't actually possible for ourTS to be > TS here,
1734 * only possible to actually have ourTS == TS, or
1735 * ourTS < TS, because if we lost, we already lowered
1736 * our TS above before we entered this loop. We only
1737 * check >= as a safety measure, in case someone stuffed
1738 * up. If someone DID stuff up, it was most likely me.
1739 * Note: I do not like baseball bats in the face...
1743 Instance->Log(DEBUG,"Our our channel newer than theirs, accepting their modes");
1744 this->Instance->SendMode((const char**)mode_users,modectr,who);
1746 /* Something stuffed up, and for some reason, the timestamp is
1747 * NOT lowered right now and should be. Lower it. Usually this
1748 * code won't be executed, doubtless someone will remove it some
1753 Instance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",chan->name,ourTS,TS);
1759 /* Reset all this back to defaults, and
1760 * free any ram we have left allocated.
1762 strcpy(mode_users[1],"+");
1763 for (unsigned int f = 2; f < modectr; f++)
1764 free(mode_users[f]);
1770 /* Remember to free this */
1772 /* If we got here, there's a nick in FJOIN which doesnt exist on this server.
1773 * We don't try to process the nickname here (that WOULD cause a segfault because
1774 * we'd be playing with null pointers) however, we DO pass the nickname on, just
1775 * in case somehow we're desynched, so that other users which might be able to see
1776 * the nickname get their fair chance to process it.
1778 Instance->Log(SPARSE,"Warning! Invalid user in FJOIN to channel %s IGNORED", channel.c_str());
1784 /* there werent enough modes built up to flush it during FJOIN,
1785 * or, there are a number left over. flush them out.
1787 if ((modectr > 2) && (who) && (chan))
1791 /* Our channel is newer than theirs. Evil deeds must be afoot. */
1792 this->Instance->SendMode((const char**)mode_users,modectr,who);
1793 /* Yet again, we can't actually get a true value here, if everything else
1794 * is working as it should.
1798 Instance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",chan->name,ourTS,TS);
1804 /* Free anything we have left to free */
1805 for (unsigned int f = 2; f < modectr; f++)
1806 free(mode_users[f]);
1809 /* if we newly created the channel, set it's TS properly. */
1812 /* find created channel .. */
1813 chan = this->Instance->FindChan(channel);
1815 /* w00t said this shouldnt be needed but it is.
1816 * This isnt strictly true, as chan can be NULL
1817 * if a nick collision has occured and therefore
1818 * the channel was never created.
1823 /* All done. That wasnt so bad was it, you can wipe
1824 * the sweat from your forehead now. :-)
1830 bool IntroduceClient(const std::string &source, std::deque<std::string> ¶ms)
1832 if (params.size() < 8)
1834 if (params.size() > 8)
1836 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+params[1]+" :Invalid client introduction ("+params[1]+"?)");
1839 // NICK age nick host dhost ident +modes ip :gecos
1841 time_t age = atoi(params[0].c_str());
1843 /* This used to have a pretty craq'y loop doing the same thing,
1844 * now we just let the STL do the hard work (more efficiently)
1846 std::string::size_type pos_after_plus = params[5].find_first_not_of('+');
1847 if (pos_after_plus != std::string::npos)
1848 params[5] = params[5].substr(pos_after_plus);
1850 const char* tempnick = params[1].c_str();
1851 Instance->Log(DEBUG,"Introduce client %s!%s@%s",tempnick,params[4].c_str(),params[2].c_str());
1853 user_hash::iterator iter = this->Instance->clientlist.find(tempnick);
1855 if (iter != this->Instance->clientlist.end())
1858 Instance->Log(DEBUG,"Nick collision on %s!%s@%s: %lu %lu",tempnick,params[4].c_str(),params[2].c_str(),(unsigned long)age,(unsigned long)iter->second->age);
1859 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+tempnick+" :Nickname collision");
1860 userrec::QuitUser(this->Instance, iter->second, "Nickname collision");
1864 userrec* _new = new userrec(this->Instance);
1865 this->Instance->clientlist[tempnick] = _new;
1866 _new->SetFd(FD_MAGIC_NUMBER);
1867 strlcpy(_new->nick, tempnick,NICKMAX-1);
1868 strlcpy(_new->host, params[2].c_str(),63);
1869 strlcpy(_new->dhost, params[3].c_str(),63);
1870 _new->server = this->Instance->FindServerNamePtr(source.c_str());
1871 strlcpy(_new->ident, params[4].c_str(),IDENTMAX);
1872 strlcpy(_new->fullname, params[7].c_str(),MAXGECOS);
1873 _new->registered = REG_ALL;
1876 for (std::string::iterator v = params[5].begin(); v != params[5].end(); v++)
1877 _new->modes[(*v)-65] = 1;
1879 #ifdef SUPPORT_IP6LINKS
1880 if (params[6].find_first_of(":") != std::string::npos)
1881 _new->SetSockAddr(AF_INET6, params[6].c_str(), 0);
1884 _new->SetSockAddr(AF_INET, params[6].c_str(), 0);
1886 this->Instance->SNO->WriteToSnoMask('C',"Client connecting at %s: %s!%s@%s [%s]",_new->server,_new->nick,_new->ident,_new->host, _new->GetIPString());
1888 params[7] = ":" + params[7];
1889 Utils->DoOneToAllButSender(source,"NICK",params,source);
1891 // Increment the Source Servers User Count..
1892 TreeServer* SourceServer = Utils->FindServer(source);
1895 Instance->Log(DEBUG,"Found source server of %s",_new->nick);
1896 SourceServer->AddUserCount();
1899 FOREACH_MOD_I(Instance,I_OnPostConnect,OnPostConnect(_new));
1904 /** Send one or more FJOINs for a channel of users.
1905 * If the length of a single line is more than 480-NICKMAX
1906 * in length, it is split over multiple lines.
1908 void SendFJoins(TreeServer* Current, chanrec* c)
1912 Instance->Log(DEBUG,"Sending FJOINs to other server for %s",c->name);
1914 std::string individual_halfops = std::string(":")+this->Instance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age);
1916 size_t dlen, curlen;
1917 dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,c->name,(unsigned long)c->age);
1919 char* ptr = list + dlen;
1921 CUList *ulist = c->GetUsers();
1922 std::string modes = "";
1923 std::string params = "";
1925 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1927 // The first parameter gets a : before it
1928 size_t ptrlen = snprintf(ptr, MAXBUF, " %s%s,%s", !numusers ? ":" : "", c->GetAllPrefixChars(i->second), i->second->nick);
1935 if (curlen > (480-NICKMAX))
1937 buffer.append(list).append("\r\n");
1939 dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,c->name,(unsigned long)c->age);
1947 buffer.append(list).append("\r\n");
1949 /* Sorry for the hax. Because newly created channels assume +nt,
1950 * if this channel doesnt have +nt, explicitly send -n and -t for the missing modes.
1952 bool inverted = false;
1953 if (!c->IsModeSet('n'))
1958 if (!c->IsModeSet('t'))
1968 for (BanList::iterator b = c->bans.begin(); b != c->bans.end(); b++)
1971 params.append(" ").append(b->data);
1973 if (params.length() >= MAXMODES)
1975 /* Wrap at MAXMODES */
1976 buffer.append(":").append(this->Instance->Config->ServerName).append(" FMODE ").append(c->name).append(" ").append(ConvToStr(c->age)).append(" +").append(modes).append(params).append("\r\n");
1982 buffer.append(":").append(this->Instance->Config->ServerName).append(" FMODE ").append(c->name).append(" ").append(ConvToStr(c->age)).append(" +").append(c->ChanModes(true));
1984 /* Only send these if there are any */
1986 buffer.append("\r\n").append(":").append(this->Instance->Config->ServerName).append(" FMODE ").append(c->name).append(" ").append(ConvToStr(c->age)).append(" +").append(modes).append(params);
1988 this->WriteLine(buffer);
1991 /** Send G, Q, Z and E lines */
1992 void SendXLines(TreeServer* Current)
1996 std::string n = this->Instance->Config->ServerName;
1997 const char* sn = n.c_str();
1999 /* Yes, these arent too nice looking, but they get the job done */
2000 for (std::vector<ZLine*>::iterator i = Instance->XLines->zlines.begin(); i != Instance->XLines->zlines.end(); i++, iterations++)
2002 snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s\r\n",sn,(*i)->ipaddr,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
2003 buffer.append(data);
2005 for (std::vector<QLine*>::iterator i = Instance->XLines->qlines.begin(); i != Instance->XLines->qlines.end(); i++, iterations++)
2007 snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s\r\n",sn,(*i)->nick,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
2008 buffer.append(data);
2010 for (std::vector<GLine*>::iterator i = Instance->XLines->glines.begin(); i != Instance->XLines->glines.end(); i++, iterations++)
2012 snprintf(data,MAXBUF,":%s ADDLINE G %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
2013 buffer.append(data);
2015 for (std::vector<ELine*>::iterator i = Instance->XLines->elines.begin(); i != Instance->XLines->elines.end(); i++, iterations++)
2017 snprintf(data,MAXBUF,":%s ADDLINE E %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
2018 buffer.append(data);
2020 for (std::vector<ZLine*>::iterator i = Instance->XLines->pzlines.begin(); i != Instance->XLines->pzlines.end(); i++, iterations++)
2022 snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s\r\n",sn,(*i)->ipaddr,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
2023 buffer.append(data);
2025 for (std::vector<QLine*>::iterator i = Instance->XLines->pqlines.begin(); i != Instance->XLines->pqlines.end(); i++, iterations++)
2027 snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s\r\n",sn,(*i)->nick,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
2028 buffer.append(data);
2030 for (std::vector<GLine*>::iterator i = Instance->XLines->pglines.begin(); i != Instance->XLines->pglines.end(); i++, iterations++)
2032 snprintf(data,MAXBUF,":%s ADDLINE G %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
2033 buffer.append(data);
2035 for (std::vector<ELine*>::iterator i = Instance->XLines->pelines.begin(); i != Instance->XLines->pelines.end(); i++, iterations++)
2037 snprintf(data,MAXBUF,":%s ADDLINE E %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
2038 buffer.append(data);
2041 if (!buffer.empty())
2042 this->WriteLine(buffer);
2045 /** Send channel modes and topics */
2046 void SendChannelModes(TreeServer* Current)
2049 std::deque<std::string> list;
2051 std::string n = this->Instance->Config->ServerName;
2052 const char* sn = n.c_str();
2053 for (chan_hash::iterator c = this->Instance->chanlist.begin(); c != this->Instance->chanlist.end(); c++, iterations++)
2055 SendFJoins(Current, c->second);
2056 if (*c->second->topic)
2058 snprintf(data,MAXBUF,":%s FTOPIC %s %lu %s :%s",sn,c->second->name,(unsigned long)c->second->topicset,c->second->setby,c->second->topic);
2059 this->WriteLine(data);
2061 FOREACH_MOD_I(this->Instance,I_OnSyncChannel,OnSyncChannel(c->second,(Module*)Utils->Creator,(void*)this));
2063 c->second->GetExtList(list);
2064 for (unsigned int j = 0; j < list.size(); j++)
2066 FOREACH_MOD_I(this->Instance,I_OnSyncChannelMetaData,OnSyncChannelMetaData(c->second,(Module*)Utils->Creator,(void*)this,list[j]));
2071 /** send all users and their oper state/modes */
2072 void SendUsers(TreeServer* Current)
2075 std::deque<std::string> list;
2076 std::string dataline;
2078 for (user_hash::iterator u = this->Instance->clientlist.begin(); u != this->Instance->clientlist.end(); u++, iterations++)
2080 if (u->second->registered == REG_ALL)
2082 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->FormatModes(),u->second->GetIPString(),u->second->fullname);
2083 this->WriteLine(data);
2084 if (*u->second->oper)
2086 snprintf(data,MAXBUF,":%s OPERTYPE %s", u->second->nick, u->second->oper);
2087 this->WriteLine(data);
2089 if (*u->second->awaymsg)
2091 snprintf(data,MAXBUF,":%s AWAY :%s", u->second->nick, u->second->awaymsg);
2092 this->WriteLine(data);
2094 FOREACH_MOD_I(this->Instance,I_OnSyncUser,OnSyncUser(u->second,(Module*)Utils->Creator,(void*)this));
2096 u->second->GetExtList(list);
2097 for (unsigned int j = 0; j < list.size(); j++)
2099 FOREACH_MOD_I(this->Instance,I_OnSyncUserMetaData,OnSyncUserMetaData(u->second,(Module*)Utils->Creator,(void*)this,list[j]));
2105 /** This function is called when we want to send a netburst to a local
2106 * server. There is a set order we must do this, because for example
2107 * users require their servers to exist, and channels require their
2108 * users to exist. You get the idea.
2110 void DoBurst(TreeServer* s)
2112 std::string burst = "BURST "+ConvToStr(Instance->Time(true));
2113 std::string endburst = "ENDBURST";
2114 // Because by the end of the netburst, it could be gone!
2115 std::string name = s->GetName();
2116 this->Instance->SNO->WriteToSnoMask('l',"Bursting to \2"+name+"\2.");
2117 this->WriteLine(burst);
2118 /* send our version string */
2119 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" VERSION :"+this->Instance->GetVersionString());
2120 /* Send server tree */
2121 this->SendServers(Utils->TreeRoot,s,1);
2122 /* Send users and their oper status */
2124 /* Send everything else (channel modes, xlines etc) */
2125 this->SendChannelModes(s);
2126 this->SendXLines(s);
2127 FOREACH_MOD_I(this->Instance,I_OnSyncOtherMetaData,OnSyncOtherMetaData((Module*)Utils->Creator,(void*)this));
2128 this->WriteLine(endburst);
2129 this->Instance->SNO->WriteToSnoMask('l',"Finished bursting to \2"+name+"\2.");
2132 /** This function is called when we receive data from a remote
2133 * server. We buffer the data in a std::string (it doesnt stay
2134 * there for long), reading using InspSocket::Read() which can
2135 * read up to 16 kilobytes in one operation.
2137 * IF THIS FUNCTION RETURNS FALSE, THE CORE CLOSES AND DELETES
2138 * THE SOCKET OBJECT FOR US.
2140 virtual bool OnDataReady()
2142 char* data = this->Read();
2143 /* Check that the data read is a valid pointer and it has some content */
2146 this->in_buffer.append(data);
2147 /* While there is at least one new line in the buffer,
2148 * do something useful (we hope!) with it.
2150 while (in_buffer.find("\n") != std::string::npos)
2152 std::string ret = in_buffer.substr(0,in_buffer.find("\n")-1);
2153 in_buffer = in_buffer.substr(in_buffer.find("\n")+1,in_buffer.length()-in_buffer.find("\n"));
2154 /* Use rfind here not find, as theres more
2155 * chance of the \r being near the end of the
2156 * string, not the start.
2158 if (ret.find("\r") != std::string::npos)
2159 ret = in_buffer.substr(0,in_buffer.find("\r")-1);
2160 /* Process this one, abort if it
2161 * didnt return true.
2167 memset(result,0,1024);
2169 /* ERROR + CAPAB is still allowed unencryped */
2170 if ((ret.substr(0,7) != "ERROR :") && (ret.substr(0,6) != "CAPAB "))
2172 int nbytes = from64tobits(out, ret.c_str(), 1024);
2173 if ((nbytes > 0) && (nbytes < 1024))
2175 ctx_in->Decrypt(out, result, nbytes, 0);
2176 for (int t = 0; t < nbytes; t++)
2178 if (result[t] == '\7')
2180 /* We only need to stick a \0 on the
2181 * first \7, the rest will be lost
2191 if (!this->ProcessLine(ret))
2198 /* EAGAIN returns an empty but non-NULL string, so this
2199 * evaluates to TRUE for EAGAIN but to FALSE for EOF.
2201 return (data && !*data);
2204 int WriteLine(std::string line)
2206 Instance->Log(DEBUG,"OUT: %s",line.c_str());
2210 char result64[10240];
2211 if (this->keylength)
2213 // pad it to the key length
2214 int n = this->keylength - (line.length() % this->keylength);
2216 line.append(n,'\7');
2218 unsigned int ll = line.length();
2219 ctx_out->Encrypt(line.c_str(), result, ll, 0);
2220 to64frombits((unsigned char*)result64,(unsigned char*)result,ll);
2223 line.append("\r\n");
2224 return this->Write(line);
2227 /* Handle ERROR command */
2228 bool Error(std::deque<std::string> ¶ms)
2230 if (params.size() < 1)
2232 this->Instance->SNO->WriteToSnoMask('l',"ERROR from %s: %s",(InboundServerName != "" ? InboundServerName.c_str() : myhost.c_str()),params[0].c_str());
2233 /* we will return false to cause the socket to close. */
2237 /** remote MOTD. leet, huh? */
2238 bool Motd(const std::string &prefix, std::deque<std::string> ¶ms)
2240 if (params.size() > 0)
2242 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
2244 /* It's for our server */
2245 string_list results;
2246 userrec* source = this->Instance->FindNick(prefix);
2250 std::deque<std::string> par;
2251 par.push_back(prefix);
2254 if (!Instance->Config->MOTD.size())
2256 par[1] = std::string("::")+Instance->Config->ServerName+" 422 "+source->nick+" :Message of the day file is missing.";
2257 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2261 par[1] = std::string("::")+Instance->Config->ServerName+" 375 "+source->nick+" :"+Instance->Config->ServerName+" message of the day";
2262 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2264 for (unsigned int i = 0; i < Instance->Config->MOTD.size(); i++)
2266 par[1] = std::string("::")+Instance->Config->ServerName+" 372 "+source->nick+" :- "+Instance->Config->MOTD[i];
2267 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2270 par[1] = std::string("::")+Instance->Config->ServerName+" 376 "+source->nick+" End of message of the day.";
2271 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2277 userrec* source = this->Instance->FindNick(prefix);
2279 Utils->DoOneToOne(prefix, "MOTD", params, params[0]);
2285 /** remote ADMIN. leet, huh? */
2286 bool Admin(const std::string &prefix, std::deque<std::string> ¶ms)
2288 if (params.size() > 0)
2290 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
2292 /* It's for our server */
2293 string_list results;
2294 userrec* source = this->Instance->FindNick(prefix);
2298 std::deque<std::string> par;
2299 par.push_back(prefix);
2302 par[1] = std::string("::")+Instance->Config->ServerName+" 256 "+source->nick+" :Administrative info for "+Instance->Config->ServerName;
2303 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2305 par[1] = std::string("::")+Instance->Config->ServerName+" 257 "+source->nick+" :Name - "+Instance->Config->AdminName;
2306 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2308 par[1] = std::string("::")+Instance->Config->ServerName+" 258 "+source->nick+" :Nickname - "+Instance->Config->AdminNick;
2309 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2311 par[1] = std::string("::")+Instance->Config->ServerName+" 258 "+source->nick+" :E-Mail - "+Instance->Config->AdminEmail;
2312 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2318 userrec* source = this->Instance->FindNick(prefix);
2320 Utils->DoOneToOne(prefix, "ADMIN", params, params[0]);
2326 bool Stats(const std::string &prefix, std::deque<std::string> ¶ms)
2328 /* Get the reply to a STATS query if it matches this servername,
2329 * and send it back as a load of PUSH queries
2331 if (params.size() > 1)
2333 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[1]))
2335 /* It's for our server */
2336 string_list results;
2337 userrec* source = this->Instance->FindNick(prefix);
2340 std::deque<std::string> par;
2341 par.push_back(prefix);
2343 DoStats(this->Instance, *(params[0].c_str()), source, results);
2344 for (size_t i = 0; i < results.size(); i++)
2346 par[1] = "::" + results[i];
2347 Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2354 userrec* source = this->Instance->FindNick(prefix);
2356 Utils->DoOneToOne(prefix, "STATS", params, params[1]);
2363 /** Because the core won't let users or even SERVERS set +o,
2364 * we use the OPERTYPE command to do this.
2366 bool OperType(const std::string &prefix, std::deque<std::string> ¶ms)
2368 if (params.size() != 1)
2370 Instance->Log(DEBUG,"Received invalid oper type from %s",prefix.c_str());
2373 std::string opertype = params[0];
2374 userrec* u = this->Instance->FindNick(prefix);
2377 u->modes[UM_OPERATOR] = 1;
2378 strlcpy(u->oper,opertype.c_str(),NICKMAX-1);
2379 Utils->DoOneToAllButSender(u->nick,"OPERTYPE",params,u->server);
2384 /** Because Andy insists that services-compatible servers must
2385 * implement SVSNICK and SVSJOIN, that's exactly what we do :p
2387 bool ForceNick(const std::string &prefix, std::deque<std::string> ¶ms)
2389 if (params.size() < 3)
2392 userrec* u = this->Instance->FindNick(params[0]);
2396 Utils->DoOneToAllButSender(prefix,"SVSNICK",params,prefix);
2399 std::deque<std::string> par;
2400 par.push_back(params[1]);
2401 /* This is not required as one is sent in OnUserPostNick below
2403 //Utils->DoOneToMany(u->nick,"NICK",par);
2404 if (!u->ForceNickChange(params[1].c_str()))
2406 userrec::QuitUser(this->Instance, u, "Nickname collision");
2409 u->age = atoi(params[2].c_str());
2415 bool ServiceJoin(const std::string &prefix, std::deque<std::string> ¶ms)
2417 if (params.size() < 2)
2420 userrec* u = this->Instance->FindNick(params[0]);
2424 chanrec::JoinUser(this->Instance, u, params[1].c_str(), false);
2425 Utils->DoOneToAllButSender(prefix,"SVSJOIN",params,prefix);
2430 bool RemoteRehash(const std::string &prefix, std::deque<std::string> ¶ms)
2432 if (params.size() < 1)
2435 std::string servermask = params[0];
2437 if (this->Instance->MatchText(this->Instance->Config->ServerName,servermask))
2439 this->Instance->SNO->WriteToSnoMask('l',"Remote rehash initiated from server \002"+prefix+"\002.");
2440 this->Instance->RehashServer();
2441 Utils->ReadConfiguration(false);
2442 InitializeDisabledCommands(Instance->Config->DisabledCommands, Instance);
2444 Utils->DoOneToAllButSender(prefix,"REHASH",params,prefix);
2448 bool RemoteKill(const std::string &prefix, std::deque<std::string> ¶ms)
2450 if (params.size() != 2)
2453 std::string nick = params[0];
2454 userrec* u = this->Instance->FindNick(prefix);
2455 userrec* who = this->Instance->FindNick(nick);
2459 /* Prepend kill source, if we don't have one */
2460 std::string sourceserv = prefix;
2463 sourceserv = u->server;
2465 if (*(params[1].c_str()) != '[')
2467 params[1] = "[" + sourceserv + "] Killed (" + params[1] +")";
2469 std::string reason = params[1];
2470 params[1] = ":" + params[1];
2471 Utils->DoOneToAllButSender(prefix,"KILL",params,sourceserv);
2472 who->Write(":%s KILL %s :%s (%s)", sourceserv.c_str(), who->nick, sourceserv.c_str(), reason.c_str());
2473 userrec::QuitUser(this->Instance,who,reason);
2478 bool LocalPong(const std::string &prefix, std::deque<std::string> ¶ms)
2480 if (params.size() < 1)
2483 if (params.size() == 1)
2485 TreeServer* ServerSource = Utils->FindServer(prefix);
2488 ServerSource->SetPingFlag();
2493 std::string forwardto = params[1];
2494 if (forwardto == this->Instance->Config->ServerName)
2497 * this is a PONG for us
2498 * if the prefix is a user, check theyre local, and if they are,
2499 * dump the PONG reply back to their fd. If its a server, do nowt.
2500 * Services might want to send these s->s, but we dont need to yet.
2502 userrec* u = this->Instance->FindNick(prefix);
2506 u->WriteServ("PONG %s %s",params[0].c_str(),params[1].c_str());
2511 // not for us, pass it on :)
2512 Utils->DoOneToOne(prefix,"PONG",params,forwardto);
2519 bool MetaData(const std::string &prefix, std::deque<std::string> ¶ms)
2521 if (params.size() < 3)
2524 TreeServer* ServerSource = Utils->FindServer(prefix);
2528 if (params[0] == "*")
2530 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_OTHER,NULL,params[1],params[2]));
2532 else if (*(params[0].c_str()) == '#')
2534 chanrec* c = this->Instance->FindChan(params[0]);
2537 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]));
2540 else if (*(params[0].c_str()) != '#')
2542 userrec* u = this->Instance->FindNick(params[0]);
2545 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2]));
2550 params[2] = ":" + params[2];
2551 Utils->DoOneToAllButSender(prefix,"METADATA",params,prefix);
2555 bool ServerVersion(const std::string &prefix, std::deque<std::string> ¶ms)
2557 if (params.size() < 1)
2560 TreeServer* ServerSource = Utils->FindServer(prefix);
2564 ServerSource->SetVersion(params[0]);
2566 params[0] = ":" + params[0];
2567 Utils->DoOneToAllButSender(prefix,"VERSION",params,prefix);
2571 bool ChangeHost(const std::string &prefix, std::deque<std::string> ¶ms)
2573 if (params.size() < 1)
2576 userrec* u = this->Instance->FindNick(prefix);
2580 u->ChangeDisplayedHost(params[0].c_str());
2581 Utils->DoOneToAllButSender(prefix,"FHOST",params,u->server);
2586 bool AddLine(const std::string &prefix, std::deque<std::string> ¶ms)
2588 if (params.size() < 6)
2591 bool propogate = false;
2593 switch (*(params[0].c_str()))
2596 propogate = Instance->XLines->add_zline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2597 Instance->XLines->zline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2600 propogate = Instance->XLines->add_qline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2601 Instance->XLines->qline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2604 propogate = Instance->XLines->add_eline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2605 Instance->XLines->eline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2608 propogate = Instance->XLines->add_gline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2609 Instance->XLines->gline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2612 propogate = Instance->XLines->add_kline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2615 /* Just in case... */
2616 this->Instance->SNO->WriteToSnoMask('x',"\2WARNING\2: Invalid xline type '"+params[0]+"' sent by server "+prefix+", ignored!");
2621 /* Send it on its way */
2624 if (atoi(params[4].c_str()))
2626 this->Instance->SNO->WriteToSnoMask('x',"%s Added %cLINE on %s to expire in %lu seconds (%s).",prefix.c_str(),*(params[0].c_str()),params[1].c_str(),atoi(params[4].c_str()),params[5].c_str());
2630 this->Instance->SNO->WriteToSnoMask('x',"%s Added permenant %cLINE on %s (%s).",prefix.c_str(),*(params[0].c_str()),params[1].c_str(),params[5].c_str());
2632 params[5] = ":" + params[5];
2633 Utils->DoOneToAllButSender(prefix,"ADDLINE",params,prefix);
2635 if (!this->bursting)
2637 Instance->Log(DEBUG,"Applying lines...");
2638 Instance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
2643 bool ChangeName(const std::string &prefix, std::deque<std::string> ¶ms)
2645 if (params.size() < 1)
2648 userrec* u = this->Instance->FindNick(prefix);
2652 u->ChangeName(params[0].c_str());
2653 params[0] = ":" + params[0];
2654 Utils->DoOneToAllButSender(prefix,"FNAME",params,u->server);
2659 bool Whois(const std::string &prefix, std::deque<std::string> ¶ms)
2661 if (params.size() < 1)
2664 Instance->Log(DEBUG,"In IDLE command");
2665 userrec* u = this->Instance->FindNick(prefix);
2669 Instance->Log(DEBUG,"USER EXISTS: %s",u->nick);
2670 // an incoming request
2671 if (params.size() == 1)
2673 userrec* x = this->Instance->FindNick(params[0]);
2674 if ((x) && (IS_LOCAL(x)))
2676 userrec* x = this->Instance->FindNick(params[0]);
2677 char signon[MAXBUF];
2680 snprintf(signon,MAXBUF,"%lu",(unsigned long)x->signon);
2681 snprintf(idle,MAXBUF,"%lu",(unsigned long)abs((x->idle_lastmsg)-Instance->Time(true)));
2682 std::deque<std::string> par;
2683 par.push_back(prefix);
2684 par.push_back(signon);
2685 par.push_back(idle);
2686 // ours, we're done, pass it BACK
2687 Utils->DoOneToOne(params[0],"IDLE",par,u->server);
2691 // not ours pass it on
2692 Utils->DoOneToOne(prefix,"IDLE",params,x->server);
2695 else if (params.size() == 3)
2697 std::string who_did_the_whois = params[0];
2698 userrec* who_to_send_to = this->Instance->FindNick(who_did_the_whois);
2699 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
2701 // an incoming reply to a whois we sent out
2702 std::string nick_whoised = prefix;
2703 unsigned long signon = atoi(params[1].c_str());
2704 unsigned long idle = atoi(params[2].c_str());
2705 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
2706 do_whois(this->Instance,who_to_send_to,u,signon,idle,nick_whoised.c_str());
2710 // not ours, pass it on
2711 Utils->DoOneToOne(prefix,"IDLE",params,who_to_send_to->server);
2718 bool Push(const std::string &prefix, std::deque<std::string> ¶ms)
2720 if (params.size() < 2)
2723 userrec* u = this->Instance->FindNick(params[0]);
2730 u->Write(params[1]);
2734 // continue the raw onwards
2735 params[1] = ":" + params[1];
2736 Utils->DoOneToOne(prefix,"PUSH",params,u->server);
2741 bool HandleSetTime(const std::string &prefix, std::deque<std::string> ¶ms)
2743 if (!params.size() || !Utils->EnableTimeSync)
2748 if ((params.size() == 2) && (params[1] == "FORCE"))
2751 time_t rts = atoi(params[0].c_str());
2752 time_t us = Instance->Time(true);
2756 Instance->Log(DEBUG, "Timestamp from %s is equal", prefix.c_str());
2758 Utils->DoOneToAllButSender(prefix, "TIMESET", params, prefix);
2760 else if (force || (rts < us))
2762 int old = Instance->SetTimeDelta(rts - us);
2763 Instance->Log(DEBUG, "%s TS (diff %d) from %s applied (old delta was %d)", (force) ? "Forced" : "Lower", rts - us, prefix.c_str(), old);
2765 Utils->DoOneToAllButSender(prefix, "TIMESET", params, prefix);
2769 Instance->Log(DEBUG, "Higher TS (diff %d) from %s overridden", us - rts, prefix.c_str());
2771 std::deque<std::string> oparams;
2772 oparams.push_back(ConvToStr(us));
2774 Utils->DoOneToMany(prefix, "TIMESET", oparams);
2780 bool Time(const std::string &prefix, std::deque<std::string> ¶ms)
2782 // :source.server TIME remote.server sendernick
2783 // :remote.server TIME source.server sendernick TS
2784 if (params.size() == 2)
2786 // someone querying our time?
2787 if (this->Instance->Config->ServerName == params[0])
2789 userrec* u = this->Instance->FindNick(params[1]);
2792 params.push_back(ConvToStr(Instance->Time(false)));
2794 Utils->DoOneToOne(this->Instance->Config->ServerName,"TIME",params,params[0]);
2799 // not us, pass it on
2800 userrec* u = this->Instance->FindNick(params[1]);
2802 Utils->DoOneToOne(prefix,"TIME",params,params[0]);
2805 else if (params.size() == 3)
2807 // a response to a previous TIME
2808 userrec* u = this->Instance->FindNick(params[1]);
2809 if ((u) && (IS_LOCAL(u)))
2811 time_t rawtime = atol(params[2].c_str());
2812 struct tm * timeinfo;
2813 timeinfo = localtime(&rawtime);
2815 snprintf(tms,26,"%s",asctime(timeinfo));
2817 u->WriteServ("391 %s %s :%s",u->nick,prefix.c_str(),tms);
2822 Utils->DoOneToOne(prefix,"TIME",params,u->server);
2828 bool LocalPing(const std::string &prefix, std::deque<std::string> ¶ms)
2830 if (params.size() < 1)
2833 if (params.size() == 1)
2835 std::string stufftobounce = params[0];
2836 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" PONG "+stufftobounce);
2841 std::string forwardto = params[1];
2842 if (forwardto == this->Instance->Config->ServerName)
2844 // this is a ping for us, send back PONG to the requesting server
2845 params[1] = params[0];
2846 params[0] = forwardto;
2847 Utils->DoOneToOne(forwardto,"PONG",params,params[1]);
2851 // not for us, pass it on :)
2852 Utils->DoOneToOne(prefix,"PING",params,forwardto);
2858 bool RemoveStatus(const std::string &prefix, std::deque<std::string> ¶ms)
2860 if (params.size() < 1)
2863 chanrec* c = Instance->FindChan(params[0]);
2867 irc::modestacker modestack(false);
2868 CUList *ulist = c->GetUsers();
2870 std::deque<std::string> stackresult;
2873 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
2875 std::string modesequence = Instance->Modes->ModeString(i->second, c);
2876 if (modesequence.length())
2878 Instance->Log(DEBUG,"Mode sequence = '%s'",modesequence.c_str());
2879 irc::spacesepstream sep(modesequence);
2880 std::string modeletters = sep.GetToken();
2881 Instance->Log(DEBUG,"Mode letters = '%s'",modeletters.c_str());
2883 while (!modeletters.empty())
2885 char mletter = *(modeletters.begin());
2886 modestack.Push(mletter,sep.GetToken());
2887 Instance->Log(DEBUG,"Push letter = '%c'",mletter);
2888 modeletters.erase(modeletters.begin());
2889 Instance->Log(DEBUG,"Mode letters = '%s'",modeletters.c_str());
2894 while (modestack.GetStackedLine(stackresult))
2896 Instance->Log(DEBUG,"Stacked line size %d",stackresult.size());
2897 stackresult.push_front(ConvToStr(c->age));
2898 stackresult.push_front(c->name);
2899 Utils->DoOneToMany(Instance->Config->ServerName, "FMODE", stackresult);
2900 stackresult.erase(stackresult.begin() + 1);
2901 Instance->Log(DEBUG,"Stacked items:");
2902 for (size_t z = 0; z < stackresult.size(); z++)
2904 y[z] = stackresult[z].c_str();
2905 Instance->Log(DEBUG,"\tstackresult[%d]='%s'",z,stackresult[z].c_str());
2907 userrec* n = new userrec(Instance);
2908 n->SetFd(FD_MAGIC_NUMBER);
2909 Instance->SendMode(y, stackresult.size(), n);
2916 bool RemoteServer(const std::string &prefix, std::deque<std::string> ¶ms)
2918 if (params.size() < 4)
2921 std::string servername = params[0];
2922 std::string password = params[1];
2923 // hopcount is not used for a remote server, we calculate this ourselves
2924 std::string description = params[3];
2925 TreeServer* ParentOfThis = Utils->FindServer(prefix);
2929 this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
2932 TreeServer* CheckDupe = Utils->FindServer(servername);
2935 this->WriteLine("ERROR :Server "+servername+" already exists!");
2936 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+servername+"\2 denied, already exists");
2939 TreeServer* Node = new TreeServer(this->Utils,this->Instance,servername,description,ParentOfThis,NULL);
2940 ParentOfThis->AddChild(Node);
2941 params[3] = ":" + params[3];
2942 Utils->DoOneToAllButSender(prefix,"SERVER",params,prefix);
2943 this->Instance->SNO->WriteToSnoMask('l',"Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
2947 bool Outbound_Reply_Server(std::deque<std::string> ¶ms)
2949 if (params.size() < 4)
2952 irc::string servername = params[0].c_str();
2953 std::string sname = params[0];
2954 std::string password = params[1];
2955 int hops = atoi(params[2].c_str());
2959 this->WriteLine("ERROR :Server too far away for authentication");
2960 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
2963 std::string description = params[3];
2964 for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
2966 if ((x->Name == servername) && (x->RecvPass == password))
2968 TreeServer* CheckDupe = Utils->FindServer(sname);
2971 this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
2972 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
2975 // Begin the sync here. this kickstarts the
2976 // other side, waiting in WAIT_AUTH_2 state,
2977 // into starting their burst, as it shows
2978 // that we're happy.
2979 this->LinkState = CONNECTED;
2980 // we should add the details of this server now
2981 // to the servers tree, as a child of the root
2983 TreeServer* Node = new TreeServer(this->Utils,this->Instance,sname,description,Utils->TreeRoot,this);
2984 Utils->TreeRoot->AddChild(Node);
2985 params[3] = ":" + params[3];
2986 Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,sname);
2987 this->bursting = true;
2988 this->DoBurst(Node);
2992 this->WriteLine("ERROR :Invalid credentials");
2993 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
2997 bool Inbound_Server(std::deque<std::string> ¶ms)
2999 if (params.size() < 4)
3002 irc::string servername = params[0].c_str();
3003 std::string sname = params[0];
3004 std::string password = params[1];
3005 int hops = atoi(params[2].c_str());
3009 this->WriteLine("ERROR :Server too far away for authentication");
3010 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
3013 std::string description = params[3];
3014 for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
3016 if ((x->Name == servername) && (x->RecvPass == password))
3018 TreeServer* CheckDupe = Utils->FindServer(sname);
3021 this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
3022 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
3025 /* If the config says this link is encrypted, but the remote side
3026 * hasnt bothered to send the AES command before SERVER, then we
3027 * boot them off as we MUST have this connection encrypted.
3029 if ((x->EncryptionKey != "") && (!this->ctx_in))
3031 this->WriteLine("ERROR :This link requires AES encryption to be enabled. Plaintext connection refused.");
3032 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, remote server did not enable AES.");
3035 this->Instance->SNO->WriteToSnoMask('l',"Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] ("+description+")");
3036 this->InboundServerName = sname;
3037 this->InboundDescription = description;
3038 // this is good. Send our details: Our server name and description and hopcount of 0,
3039 // along with the sendpass from this block.
3040 this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc);
3041 // move to the next state, we are now waiting for THEM.
3042 this->LinkState = WAIT_AUTH_2;
3046 this->WriteLine("ERROR :Invalid credentials");
3047 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
3051 void Split(const std::string &line, std::deque<std::string> &n)
3054 irc::tokenstream tokens(line);
3056 while ((param = tokens.GetToken()) != "")
3061 bool ProcessLine(std::string &line)
3063 std::deque<std::string> params;
3064 irc::string command;
3070 line = line.substr(0, line.find_first_of("\r\n"));
3072 Instance->Log(DEBUG,"IN: %s", line.c_str());
3074 this->Split(line.c_str(),params);
3076 if ((params[0][0] == ':') && (params.size() > 1))
3078 prefix = params[0].substr(1);
3082 command = params[0].c_str();
3085 if ((!this->ctx_in) && (command == "AES"))
3087 std::string sserv = params[0];
3088 for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
3090 if ((x->EncryptionKey != "") && (x->Name == sserv))
3092 this->InitAES(x->EncryptionKey,sserv);
3098 else if ((this->ctx_in) && (command == "AES"))
3100 this->Instance->SNO->WriteToSnoMask('l',"\2AES\2: Encryption already enabled on this connection yet %s is trying to enable it twice!",params[0].c_str());
3103 switch (this->LinkState)
3108 // Waiting for SERVER command from remote server. Server initiating
3109 // the connection sends the first SERVER command, listening server
3110 // replies with theirs if its happy, then if the initiator is happy,
3111 // it starts to send its net sync, which starts the merge, otherwise
3112 // it sends an ERROR.
3113 if (command == "PASS")
3115 /* Silently ignored */
3117 else if (command == "SERVER")
3119 return this->Inbound_Server(params);
3121 else if (command == "ERROR")
3123 return this->Error(params);
3125 else if (command == "USER")
3127 this->WriteLine("ERROR :Client connections to this port are prohibited.");
3130 else if (command == "CAPAB")
3132 return this->Capab(params);
3134 else if ((command == "U") || (command == "S"))
3136 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
3141 std::string error("ERROR :Invalid command in negotiation phase: ");
3142 error.append(command.c_str());
3143 this->WriteLine(error);
3148 // Waiting for start of other side's netmerge to say they liked our
3150 if (command == "SERVER")
3152 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
3156 else if ((command == "U") || (command == "S"))
3158 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
3161 else if (command == "BURST")
3163 if (params.size() && Utils->EnableTimeSync)
3165 /* If a time stamp is provided, apply synchronization */
3167 time_t them = atoi(params[0].c_str());
3168 time_t us = Instance->Time(true);
3169 int delta = them - us;
3171 if ((params.size() == 2) && (params[1] == "FORCE"))
3174 if ((delta < -600) || (delta > 600))
3176 this->Instance->SNO->WriteToSnoMask('l',"\2ERROR\2: Your clocks are out by %d seconds (this is more than ten minutes). Link aborted, \2PLEASE SYNC YOUR CLOCKS!\2",abs(delta));
3177 this->WriteLine("ERROR :Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than ten minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!");
3183 this->Instance->Log(DEBUG, "Timestamps are equal; pat yourself on the back");
3185 else if (force || (us > them))
3187 this->Instance->Log(DEBUG, "Remote server has lower TS (%d seconds)", them - us);
3188 this->Instance->SetTimeDelta(them - us);
3189 // Send this new timestamp to any other servers
3190 Utils->DoOneToMany(Utils->TreeRoot->GetName(), "TIMESET", params);
3194 // Override the timestamp
3195 this->Instance->Log(DEBUG, "We have a higher timestamp (by %d seconds), not updating delta", us - them);
3196 this->WriteLine(":" + Utils->TreeRoot->GetName() + " TIMESET " + ConvToStr(us));
3199 this->LinkState = CONNECTED;
3200 Node = new TreeServer(this->Utils,this->Instance,InboundServerName,InboundDescription,Utils->TreeRoot,this);
3201 Utils->TreeRoot->AddChild(Node);
3203 params.push_back(InboundServerName);
3204 params.push_back("*");
3205 params.push_back("1");
3206 params.push_back(":"+InboundDescription);
3207 Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,InboundServerName);
3208 this->bursting = true;
3209 this->DoBurst(Node);
3211 else if (command == "ERROR")
3213 return this->Error(params);
3215 else if (command == "CAPAB")
3217 return this->Capab(params);
3222 this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
3226 if (command == "SERVER")
3228 // another server we connected to, which was in WAIT_AUTH_1 state,
3229 // has just sent us their credentials. If we get this far, theyre
3230 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
3231 // if we're happy with this, we should send our netburst which
3232 // kickstarts the merge.
3233 return this->Outbound_Reply_Server(params);
3235 else if (command == "ERROR")
3237 return this->Error(params);
3241 // This is the 'authenticated' state, when all passwords
3242 // have been exchanged and anything past this point is taken
3247 std::string direction = prefix;
3248 userrec* t = this->Instance->FindNick(prefix);
3251 direction = t->server;
3253 TreeServer* route_back_again = Utils->BestRouteTo(direction);
3254 if ((!route_back_again) || (route_back_again->GetSocket() != this))
3256 if (route_back_again)
3257 Instance->Log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
3262 * When there is activity on the socket, reset the ping counter so
3263 * that we're not wasting bandwidth pinging an active server.
3265 route_back_again->SetNextPingTime(time(NULL) + 60);
3266 route_back_again->SetPingFlag();
3269 if (command == "SVSMODE")
3271 /* Services expects us to implement
3272 * SVSMODE. In inspircd its the same as
3277 std::string target = "";
3278 /* Yes, know, this is a mess. Its reasonably fast though as we're
3279 * working with std::string here.
3281 if ((command == "NICK") && (params.size() > 1))
3283 return this->IntroduceClient(prefix,params);
3285 else if (command == "FJOIN")
3287 return this->ForceJoin(prefix,params);
3289 else if (command == "STATS")
3291 return this->Stats(prefix, params);
3293 else if (command == "MOTD")
3295 return this->Motd(prefix, params);
3297 else if (command == "ADMIN")
3299 return this->Admin(prefix, params);
3301 else if (command == "SERVER")
3303 return this->RemoteServer(prefix,params);
3305 else if (command == "ERROR")
3307 return this->Error(params);
3309 else if (command == "OPERTYPE")
3311 return this->OperType(prefix,params);
3313 else if (command == "FMODE")
3315 return this->ForceMode(prefix,params);
3317 else if (command == "KILL")
3319 return this->RemoteKill(prefix,params);
3321 else if (command == "FTOPIC")
3323 return this->ForceTopic(prefix,params);
3325 else if (command == "REHASH")
3327 return this->RemoteRehash(prefix,params);
3329 else if (command == "METADATA")
3331 return this->MetaData(prefix,params);
3333 else if (command == "REMSTATUS")
3335 return this->RemoveStatus(prefix,params);
3337 else if (command == "PING")
3340 * We just got a ping from a server that's bursting.
3341 * This can't be right, so set them to not bursting, and
3342 * apply their lines.
3346 this->bursting = false;
3347 Instance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
3351 prefix = this->GetName();
3353 return this->LocalPing(prefix,params);
3355 else if (command == "PONG")
3358 * We just got a pong from a server that's bursting.
3359 * This can't be right, so set them to not bursting, and
3360 * apply their lines.
3364 this->bursting = false;
3365 Instance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
3369 prefix = this->GetName();
3371 return this->LocalPong(prefix,params);
3373 else if (command == "VERSION")
3375 return this->ServerVersion(prefix,params);
3377 else if (command == "FHOST")
3379 return this->ChangeHost(prefix,params);
3381 else if (command == "FNAME")
3383 return this->ChangeName(prefix,params);
3385 else if (command == "ADDLINE")
3387 return this->AddLine(prefix,params);
3389 else if (command == "SVSNICK")
3393 prefix = this->GetName();
3395 return this->ForceNick(prefix,params);
3397 else if (command == "IDLE")
3399 return this->Whois(prefix,params);
3401 else if (command == "PUSH")
3403 return this->Push(prefix,params);
3405 else if (command == "TIMESET")
3407 return this->HandleSetTime(prefix, params);
3409 else if (command == "TIME")
3411 return this->Time(prefix,params);
3413 else if ((command == "KICK") && (Utils->IsServer(prefix)))
3415 std::string sourceserv = this->myhost;
3416 if (params.size() == 3)
3418 userrec* user = this->Instance->FindNick(params[1]);
3419 chanrec* chan = this->Instance->FindChan(params[0]);
3422 if (!chan->ServerKickUser(user, params[2].c_str(), false))
3423 /* Yikes, the channels gone! */
3427 if (this->InboundServerName != "")
3429 sourceserv = this->InboundServerName;
3431 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
3433 else if (command == "SVSJOIN")
3437 prefix = this->GetName();
3439 return this->ServiceJoin(prefix,params);
3441 else if (command == "SQUIT")
3443 if (params.size() == 2)
3445 this->Squit(Utils->FindServer(params[0]),params[1]);
3449 else if (command == "OPERNOTICE")
3451 std::string sourceserv = this->myhost;
3453 if (this->InboundServerName != "")
3454 sourceserv = this->InboundServerName;
3456 if (params.size() >= 1)
3457 Instance->WriteOpers("*** From " + sourceserv + ": " + params[0]);
3459 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
3461 else if (command == "MODENOTICE")
3463 std::string sourceserv = this->myhost;
3464 if (this->InboundServerName != "")
3465 sourceserv = this->InboundServerName;
3466 if (params.size() >= 2)
3468 Instance->WriteMode(params[0].c_str(), WM_AND, "*** From %s: %s", sourceserv.c_str(), params[1].c_str());
3471 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
3473 else if (command == "SNONOTICE")
3475 std::string sourceserv = this->myhost;
3476 if (this->InboundServerName != "")
3477 sourceserv = this->InboundServerName;
3478 if (params.size() >= 2)
3480 Instance->SNO->WriteToSnoMask(*(params[0].c_str()), "From " + sourceserv + ": "+ params[1]);
3483 return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
3485 else if (command == "ENDBURST")
3487 this->bursting = false;
3488 Instance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
3489 std::string sourceserv = this->myhost;
3490 if (this->InboundServerName != "")
3492 sourceserv = this->InboundServerName;
3494 this->Instance->SNO->WriteToSnoMask('l',"Received end of netburst from \2%s\2",sourceserv.c_str());
3496 Event rmode((char*)sourceserv.c_str(), (Module*)Utils->Creator, "new_server");
3497 rmode.Send(Instance);
3503 // not a special inter-server command.
3504 // Emulate the actual user doing the command,
3505 // this saves us having a huge ugly parser.
3506 userrec* who = this->Instance->FindNick(prefix);
3507 std::string sourceserv = this->myhost;
3508 if (this->InboundServerName != "")
3510 sourceserv = this->InboundServerName;
3512 if ((!who) && (command == "MODE"))
3514 if (Utils->IsServer(prefix))
3516 const char* modelist[127];
3517 for (size_t i = 0; i < params.size(); i++)
3518 modelist[i] = params[i].c_str();
3520 userrec* fake = new userrec(Instance);
3521 fake->SetFd(FD_MAGIC_NUMBER);
3523 this->Instance->SendMode(modelist, params.size(), fake);
3527 /* Hot potato! pass it on! */
3528 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
3533 if ((command == "NICK") && (params.size() > 0))
3535 /* On nick messages, check that the nick doesnt
3536 * already exist here. If it does, kill their copy,
3539 userrec* x = this->Instance->FindNick(params[0]);
3540 if ((x) && (x != who))
3542 std::deque<std::string> p;
3543 p.push_back(params[0]);
3544 p.push_back("Nickname collision ("+prefix+" -> "+params[0]+")");
3545 Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
3547 p.push_back(prefix);
3548 p.push_back("Nickname collision");
3549 Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
3550 userrec::QuitUser(this->Instance,x,"Nickname collision ("+prefix+" -> "+params[0]+")");
3551 userrec* y = this->Instance->FindNick(prefix);
3554 userrec::QuitUser(this->Instance,y,"Nickname collision");
3556 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
3560 target = who->server;
3561 const char* strparams[127];
3562 for (unsigned int q = 0; q < params.size(); q++)
3564 strparams[q] = params[q].c_str();
3566 switch (this->Instance->CallCommandHandler(command.c_str(), strparams, params.size(), who))
3569 this->WriteLine("ERROR :Unrecognised command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules");
3576 /* CMD_SUCCESS and CMD_USER_DELETED fall through here */
3582 // its not a user. Its either a server, or somethings screwed up.
3583 if (Utils->IsServer(prefix))
3585 target = this->Instance->Config->ServerName;
3589 Instance->Log(DEBUG,"Command with unknown origin '%s'",prefix.c_str());
3593 return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
3602 virtual std::string GetName()
3604 std::string sourceserv = this->myhost;
3605 if (this->InboundServerName != "")
3607 sourceserv = this->InboundServerName;
3612 virtual void OnTimeout()
3614 if (this->LinkState == CONNECTING)
3616 this->Instance->SNO->WriteToSnoMask('l',"CONNECT: Connection to \002"+myhost+"\002 timed out.");
3617 Link* MyLink = Utils->FindLink(myhost);
3619 Utils->DoFailOver(MyLink);
3623 virtual void OnClose()
3625 // Connection closed.
3626 // If the connection is fully up (state CONNECTED)
3627 // then propogate a netsplit to all peers.
3628 std::string quitserver = this->myhost;
3629 if (this->InboundServerName != "")
3631 quitserver = this->InboundServerName;
3633 TreeServer* s = Utils->FindServer(quitserver);
3636 Squit(s,"Remote host closed the connection");
3639 if (quitserver != "")
3640 this->Instance->SNO->WriteToSnoMask('l',"Connection to '\2%s\2' failed.",quitserver.c_str());
3643 virtual int OnIncomingConnection(int newsock, char* ip)
3645 /* To prevent anyone from attempting to flood opers/DDoS by connecting to the server port,
3646 * or discovering if this port is the server port, we don't allow connections from any
3647 * IPs for which we don't have a link block.
3651 found = (std::find(Utils->ValidIPs.begin(), Utils->ValidIPs.end(), ip) != Utils->ValidIPs.end());
3654 for (vector<std::string>::iterator i = Utils->ValidIPs.begin(); i != Utils->ValidIPs.end(); i++)
3655 if (irc::sockets::MatchCIDR(ip, (*i).c_str()))
3660 this->Instance->SNO->WriteToSnoMask('l',"Server connection from %s denied (no link blocks with that IP address)", ip);
3665 TreeSocket* s = new TreeSocket(this->Utils, this->Instance, newsock, ip);
3666 s = s; /* Whinge whinge whinge, thats all GCC ever does. */
3671 /** This class is used to resolve server hostnames during /connect and autoconnect.
3672 * As of 1.1, the resolver system is seperated out from InspSocket, so we must do this
3673 * resolver step first ourselves if we need it. This is totally nonblocking, and will
3674 * callback to OnLookupComplete or OnError when completed. Once it has completed we
3675 * will have an IP address which we can then use to continue our connection.
3677 class ServernameResolver : public Resolver
3680 /** A copy of the Link tag info for what we're connecting to.
3681 * We take a copy, rather than using a pointer, just in case the
3682 * admin takes the tag away and rehashes while the domain is resolving.
3685 SpanningTreeUtilities* Utils;
3687 ServernameResolver(Module* me, SpanningTreeUtilities* Util, InspIRCd* Instance, const std::string &hostname, Link x) : Resolver(Instance, hostname, DNS_QUERY_FORWARD, me), MyLink(x), Utils(Util)
3689 /* Nothing in here, folks */
3692 void OnLookupComplete(const std::string &result)
3694 /* Initiate the connection, now that we have an IP to use.
3695 * Passing a hostname directly to InspSocket causes it to
3696 * just bail and set its FD to -1.
3698 TreeServer* CheckDupe = Utils->FindServer(MyLink.Name.c_str());
3699 if (!CheckDupe) /* Check that nobody tried to connect it successfully while we were resolving */
3701 TreeSocket* newsocket = new TreeSocket(this->Utils, ServerInstance, result,MyLink.Port,false,MyLink.Timeout ? MyLink.Timeout : 10,MyLink.Name.c_str());
3702 if (newsocket->GetFd() > -1)
3708 /* Something barfed, show the opers */
3709 ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",MyLink.Name.c_str(),strerror(errno));
3711 Utils->DoFailOver(&MyLink);
3716 void OnError(ResolverError e, const std::string &errormessage)
3719 ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: Unable to resolve hostname - %s",MyLink.Name.c_str(),errormessage.c_str());
3720 Utils->DoFailOver(&MyLink);
3724 /** Handle resolving of server IPs for the cache
3726 class SecurityIPResolver : public Resolver
3730 SpanningTreeUtilities* Utils;
3732 SecurityIPResolver(Module* me, SpanningTreeUtilities* U, InspIRCd* Instance, const std::string &hostname, Link x) : Resolver(Instance, hostname, DNS_QUERY_FORWARD, me), MyLink(x), Utils(U)
3736 void OnLookupComplete(const std::string &result)
3738 ServerInstance->Log(DEBUG,"Security IP cache: Adding IP address '%s' for Link '%s'",result.c_str(),MyLink.Name.c_str());
3739 Utils->ValidIPs.push_back(result);
3742 void OnError(ResolverError e, const std::string &errormessage)
3744 ServerInstance->Log(DEBUG,"Could not resolve IP associated with Link '%s': %s",MyLink.Name.c_str(),errormessage.c_str());
3748 SpanningTreeUtilities::SpanningTreeUtilities(InspIRCd* Instance, ModuleSpanningTree* C) : ServerInstance(Instance), Creator(C)
3751 this->ReadConfiguration(true);
3752 this->TreeRoot = new TreeServer(this, ServerInstance, ServerInstance->Config->ServerName, ServerInstance->Config->ServerDesc);
3755 SpanningTreeUtilities::~SpanningTreeUtilities()
3757 for (unsigned int i = 0; i < Bindings.size(); i++)
3759 ServerInstance->Log(DEBUG,"Freeing binding %d of %d",i, Bindings.size());
3760 ServerInstance->SE->DelFd(Bindings[i]);
3761 Bindings[i]->Close();
3762 DELETE(Bindings[i]);
3764 ServerInstance->Log(DEBUG,"Freeing connected servers...");
3765 while (TreeRoot->ChildCount())
3767 TreeServer* child_server = TreeRoot->GetChild(0);
3768 ServerInstance->Log(DEBUG,"Freeing connected server %s", child_server->GetName().c_str());
3771 TreeSocket* sock = child_server->GetSocket();
3772 ServerInstance->SE->DelFd(sock);
3780 void SpanningTreeUtilities::AddThisServer(TreeServer* server, TreeServerList &list)
3782 if (list.find(server) == list.end())
3783 list[server] = server;
3786 /** returns a list of DIRECT servernames for a specific channel */
3787 void SpanningTreeUtilities::GetListOfServersForChannel(chanrec* c, TreeServerList &list, char status, const CUList &exempt_list)
3793 ulist = c->GetOppedUsers();
3796 ulist = c->GetHalfoppedUsers();
3799 ulist = c->GetVoicedUsers();
3802 ulist = c->GetUsers();
3805 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
3807 if ((i->second->GetFd() < 0) && (exempt_list.find(i->second) == exempt_list.end()))
3809 TreeServer* best = this->BestRouteTo(i->second->server);
3811 AddThisServer(best,list);
3817 bool SpanningTreeUtilities::DoOneToAllButSenderRaw(const std::string &data, const std::string &omit, const std::string &prefix, const irc::string &command, std::deque<std::string> ¶ms)
3820 TreeServer* omitroute = this->BestRouteTo(omit);
3821 if ((command == "NOTICE") || (command == "PRIVMSG"))
3823 if (params.size() >= 2)
3826 if ((*(params[0].c_str()) == '@') || (*(params[0].c_str()) == '%') || (*(params[0].c_str()) == '+'))
3829 params[0] = params[0].substr(1, params[0].length()-1);
3831 if ((*(params[0].c_str()) != '#') && (*(params[0].c_str()) != '$'))
3833 // special routing for private messages/notices
3834 userrec* d = ServerInstance->FindNick(params[0]);
3837 std::deque<std::string> par;
3838 par.push_back(params[0]);
3839 par.push_back(":"+params[1]);
3840 this->DoOneToOne(prefix,command.c_str(),par,d->server);
3844 else if (*(params[0].c_str()) == '$')
3846 std::deque<std::string> par;
3847 par.push_back(params[0]);
3848 par.push_back(":"+params[1]);
3849 this->DoOneToAllButSender(prefix,command.c_str(),par,omitroute->GetName());
3854 chanrec* c = ServerInstance->FindChan(params[0]);
3855 userrec* u = ServerInstance->FindNick(prefix);
3859 TreeServerList list;
3860 FOREACH_MOD(I_OnBuildExemptList, OnBuildExemptList((command == "PRIVMSG" ? MSG_PRIVMSG : MSG_NOTICE), c, u, pfx, elist));
3861 GetListOfServersForChannel(c,list,pfx,elist);
3863 for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
3865 TreeSocket* Sock = i->second->GetSocket();
3866 if ((Sock) && (i->second->GetName() != omit) && (omitroute != i->second))
3868 Sock->WriteLine(data);
3876 unsigned int items =this->TreeRoot->ChildCount();
3877 for (unsigned int x = 0; x < items; x++)
3879 TreeServer* Route = this->TreeRoot->GetChild(x);
3880 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
3882 TreeSocket* Sock = Route->GetSocket();
3884 Sock->WriteLine(data);
3890 bool SpanningTreeUtilities::DoOneToAllButSender(const std::string &prefix, const std::string &command, std::deque<std::string> ¶ms, std::string omit)
3892 TreeServer* omitroute = this->BestRouteTo(omit);
3893 std::string FullLine = ":" + prefix + " " + command;
3894 unsigned int words = params.size();
3895 for (unsigned int x = 0; x < words; x++)
3897 FullLine = FullLine + " " + params[x];
3899 unsigned int items = this->TreeRoot->ChildCount();
3900 for (unsigned int x = 0; x < items; x++)
3902 TreeServer* Route = this->TreeRoot->GetChild(x);
3903 // Send the line IF:
3904 // The route has a socket (its a direct connection)
3905 // The route isnt the one to be omitted
3906 // The route isnt the path to the one to be omitted
3907 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
3909 TreeSocket* Sock = Route->GetSocket();
3911 Sock->WriteLine(FullLine);
3917 bool SpanningTreeUtilities::DoOneToMany(const std::string &prefix, const std::string &command, std::deque<std::string> ¶ms)
3919 std::string FullLine = ":" + prefix + " " + command;
3920 unsigned int words = params.size();
3921 for (unsigned int x = 0; x < words; x++)
3923 FullLine = FullLine + " " + params[x];
3925 unsigned int items = this->TreeRoot->ChildCount();
3926 for (unsigned int x = 0; x < items; x++)
3928 TreeServer* Route = this->TreeRoot->GetChild(x);
3929 if (Route && Route->GetSocket())
3931 TreeSocket* Sock = Route->GetSocket();
3933 Sock->WriteLine(FullLine);
3939 bool SpanningTreeUtilities::DoOneToMany(const char* prefix, const char* command, std::deque<std::string> ¶ms)
3941 std::string spfx = prefix;
3942 std::string scmd = command;
3943 return this->DoOneToMany(spfx, scmd, params);
3946 bool SpanningTreeUtilities::DoOneToAllButSender(const char* prefix, const char* command, std::deque<std::string> ¶ms, std::string omit)
3948 std::string spfx = prefix;
3949 std::string scmd = command;
3950 return this->DoOneToAllButSender(spfx, scmd, params, omit);
3953 bool SpanningTreeUtilities::DoOneToOne(const std::string &prefix, const std::string &command, std::deque<std::string> ¶ms, std::string target)
3955 TreeServer* Route = this->BestRouteTo(target);
3958 std::string FullLine = ":" + prefix + " " + command;
3959 unsigned int words = params.size();
3960 for (unsigned int x = 0; x < words; x++)
3962 FullLine = FullLine + " " + params[x];
3964 if (Route && Route->GetSocket())
3966 TreeSocket* Sock = Route->GetSocket();
3968 Sock->WriteLine(FullLine);
3978 void SpanningTreeUtilities::ReadConfiguration(bool rebind)
3980 ConfigReader* Conf = new ConfigReader(ServerInstance);
3983 for (int j =0; j < Conf->Enumerate("bind"); j++)
3985 std::string Type = Conf->ReadValue("bind","type",j);
3986 std::string IP = Conf->ReadValue("bind","address",j);
3987 std::string Port = Conf->ReadValue("bind","port",j);
3988 if (Type == "servers")
3990 irc::portparser portrange(Port, false);
3992 while ((portno = portrange.GetToken()))
3994 ServerInstance->Log(DEBUG,"m_spanningtree: Binding server port %s:%d", IP.c_str(), portno);
3998 TreeSocket* listener = new TreeSocket(this, ServerInstance, IP.c_str(), portno, true, 10);
3999 if (listener->GetState() == I_LISTENING)
4001 ServerInstance->Log(DEFAULT,"m_spanningtree: Binding server port %s:%d successful!", IP.c_str(), portno);
4002 Bindings.push_back(listener);
4006 ServerInstance->Log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port %s:%d",IP.c_str(), portno);
4010 ServerInstance->Log(DEBUG,"Done with this binding");
4015 FlatLinks = Conf->ReadFlag("options","flatlinks",0);
4016 HideULines = Conf->ReadFlag("options","hideulines",0);
4017 AnnounceTSChange = Conf->ReadFlag("options","announcets",0);
4018 EnableTimeSync = !(Conf->ReadFlag("options","notimesync",0));
4021 for (int j =0; j < Conf->Enumerate("link"); j++)
4024 std::string Allow = Conf->ReadValue("link","allowmask",j);
4025 L.Name = (Conf->ReadValue("link","name",j)).c_str();
4026 L.IPAddr = Conf->ReadValue("link","ipaddr",j);
4027 L.FailOver = Conf->ReadValue("link","failover",j).c_str();
4028 L.Port = Conf->ReadInteger("link","port",j,true);
4029 L.SendPass = Conf->ReadValue("link","sendpass",j);
4030 L.RecvPass = Conf->ReadValue("link","recvpass",j);
4031 L.AutoConnect = Conf->ReadInteger("link","autoconnect",j,true);
4032 L.EncryptionKey = Conf->ReadValue("link","encryptionkey",j);
4033 L.HiddenFromStats = Conf->ReadFlag("link","hidden",j);
4034 L.Timeout = Conf->ReadInteger("link","timeout",j,true);
4035 L.NextConnectTime = time(NULL) + L.AutoConnect;
4036 /* Bugfix by brain, do not allow people to enter bad configurations */
4037 if (L.Name != ServerInstance->Config->ServerName)
4039 if ((L.IPAddr != "") && (L.RecvPass != "") && (L.SendPass != "") && (L.Name != "") && (L.Port))
4041 ValidIPs.push_back(L.IPAddr);
4044 ValidIPs.push_back(Allow);
4046 /* Needs resolving */
4048 if (insp_aton(L.IPAddr.c_str(), &binip) < 1)
4052 SecurityIPResolver* sr = new SecurityIPResolver((Module*)this->Creator, this, ServerInstance, L.IPAddr, L);
4053 ServerInstance->AddResolver(sr);
4055 catch (ModuleException& e)
4057 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
4061 LinkBlocks.push_back(L);
4062 ServerInstance->Log(DEBUG,"m_spanningtree: Read server %s with host %s:%d",L.Name.c_str(),L.IPAddr.c_str(),L.Port);
4068 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', IP address not defined!",L.Name.c_str());
4070 else if (L.RecvPass == "")
4072 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', recvpass not defined!",L.Name.c_str());
4074 else if (L.SendPass == "")
4076 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', sendpass not defined!",L.Name.c_str());
4078 else if (L.Name == "")
4080 ServerInstance->Log(DEFAULT,"Invalid configuration, link tag without a name!");
4084 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', no port specified!",L.Name.c_str());
4090 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', link tag has the same server name as the local server!",L.Name.c_str());
4096 /** To create a timer which recurs every second, we inherit from InspTimer.
4097 * InspTimer is only one-shot however, so at the end of each Tick() we simply
4098 * insert another of ourselves into the pending queue :)
4100 class TimeSyncTimer : public InspTimer
4104 ModuleSpanningTree *Module;
4106 TimeSyncTimer(InspIRCd *Instance, ModuleSpanningTree *Mod);
4107 virtual void Tick(time_t TIME);
4110 class ModuleSpanningTree : public Module
4114 unsigned int max_local;
4115 unsigned int max_global;
4116 cmd_rconnect* command_rconnect;
4117 SpanningTreeUtilities* Utils;
4120 TimeSyncTimer *SyncTimer;
4122 ModuleSpanningTree(InspIRCd* Me)
4123 : Module::Module(Me), max_local(0), max_global(0)
4125 Utils = new SpanningTreeUtilities(Me, this);
4127 command_rconnect = new cmd_rconnect(ServerInstance, this, Utils);
4128 ServerInstance->AddCommand(command_rconnect);
4130 if (Utils->EnableTimeSync)
4132 SyncTimer = new TimeSyncTimer(ServerInstance, this);
4133 ServerInstance->Timers->AddTimer(SyncTimer);
4139 void ShowLinks(TreeServer* Current, userrec* user, int hops)
4141 std::string Parent = Utils->TreeRoot->GetName();
4142 if (Current->GetParent())
4144 Parent = Current->GetParent()->GetName();
4146 for (unsigned int q = 0; q < Current->ChildCount(); q++)
4148 if ((Utils->HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str())))
4152 ShowLinks(Current->GetChild(q),user,hops+1);
4157 ShowLinks(Current->GetChild(q),user,hops+1);
4160 /* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */
4161 if ((Utils->HideULines) && (ServerInstance->ULine(Current->GetName().c_str())) && (!*user->oper))
4163 user->WriteServ("364 %s %s %s :%d %s",user->nick,Current->GetName().c_str(),(Utils->FlatLinks && (!*user->oper)) ? ServerInstance->Config->ServerName : Parent.c_str(),(Utils->FlatLinks && (!*user->oper)) ? 0 : hops,Current->GetDesc().c_str());
4166 int CountLocalServs()
4168 return Utils->TreeRoot->ChildCount();
4173 return Utils->serverlist.size();
4176 void HandleLinks(const char** parameters, int pcnt, userrec* user)
4178 ShowLinks(Utils->TreeRoot,user,0);
4179 user->WriteServ("365 %s * :End of /LINKS list.",user->nick);
4183 void HandleLusers(const char** parameters, int pcnt, userrec* user)
4185 unsigned int n_users = ServerInstance->UserCount();
4187 /* Only update these when someone wants to see them, more efficient */
4188 if ((unsigned int)ServerInstance->LocalUserCount() > max_local)
4189 max_local = ServerInstance->LocalUserCount();
4190 if (n_users > max_global)
4191 max_global = n_users;
4193 unsigned int ulined_count = 0;
4194 unsigned int ulined_local_count = 0;
4196 /* If ulined are hidden and we're not an oper, count the number of ulined servers hidden,
4197 * locally and globally (locally means directly connected to us)
4199 if ((Utils->HideULines) && (!*user->oper))
4201 for (server_hash::iterator q = Utils->serverlist.begin(); q != Utils->serverlist.end(); q++)
4203 if (ServerInstance->ULine(q->second->GetName().c_str()))
4206 if (q->second->GetParent() == Utils->TreeRoot)
4207 ulined_local_count++;
4212 user->WriteServ("251 %s :There are %d users and %d invisible on %d servers",user->nick,n_users-ServerInstance->InvisibleUserCount(),ServerInstance->InvisibleUserCount(),ulined_count ? this->CountServs() - ulined_count : this->CountServs());
4213 if (ServerInstance->OperCount())
4214 user->WriteServ("252 %s %d :operator(s) online",user->nick,ServerInstance->OperCount());
4215 if (ServerInstance->UnregisteredUserCount())
4216 user->WriteServ("253 %s %d :unknown connections",user->nick,ServerInstance->UnregisteredUserCount());
4217 if (ServerInstance->ChannelCount())
4218 user->WriteServ("254 %s %d :channels formed",user->nick,ServerInstance->ChannelCount());
4219 user->WriteServ("254 %s :I have %d clients and %d servers",user->nick,ServerInstance->LocalUserCount(),ulined_local_count ? this->CountLocalServs() - ulined_local_count : this->CountLocalServs());
4220 user->WriteServ("265 %s :Current Local Users: %d Max: %d",user->nick,ServerInstance->LocalUserCount(),max_local);
4221 user->WriteServ("266 %s :Current Global Users: %d Max: %d",user->nick,n_users,max_global);
4225 // WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS.
4227 void ShowMap(TreeServer* Current, userrec* user, int depth, char matrix[128][80], float &totusers, float &totservers)
4231 for (int t = 0; t < depth; t++)
4233 matrix[line][t] = ' ';
4236 // For Aligning, we need to work out exactly how deep this thing is, and produce
4237 // a 'Spacer' String to compensate.
4240 memset(spacer,' ',40);
4241 if ((40 - Current->GetName().length() - depth) > 1) {
4242 spacer[40 - Current->GetName().length() - depth] = '\0';
4251 if (ServerInstance->clientlist.size() == 0) {
4252 // If there are no users, WHO THE HELL DID THE /MAP?!?!?!
4257 percent = ((float)Current->GetUserCount() / (float)ServerInstance->clientlist.size()) * 100;
4259 snprintf(text, 80, "%s %s%5d [%5.2f%%]", Current->GetName().c_str(), spacer, Current->GetUserCount(), percent);
4260 totusers += Current->GetUserCount();
4262 strlcpy(&matrix[line][depth],text,80);
4264 for (unsigned int q = 0; q < Current->ChildCount(); q++)
4266 if ((Utils->HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str())))
4270 ShowMap(Current->GetChild(q),user,(Utils->FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers);
4275 ShowMap(Current->GetChild(q),user,(Utils->FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers);
4281 int HandleMotd(const char** parameters, int pcnt, userrec* user)
4285 /* Remote MOTD, the server is within the 1st parameter */
4286 std::deque<std::string> params;
4287 params.push_back(parameters[0]);
4289 /* Send it out remotely, generate no reply yet */
4290 TreeServer* s = Utils->FindServerMask(parameters[0]);
4293 Utils->DoOneToOne(user->nick, "MOTD", params, s->GetName());
4297 user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]);
4304 int HandleAdmin(const char** parameters, int pcnt, userrec* user)
4308 /* Remote ADMIN, the server is within the 1st parameter */
4309 std::deque<std::string> params;
4310 params.push_back(parameters[0]);
4312 /* Send it out remotely, generate no reply yet */
4313 TreeServer* s = Utils->FindServerMask(parameters[0]);
4316 Utils->DoOneToOne(user->nick, "ADMIN", params, s->GetName());
4320 user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]);
4327 int HandleStats(const char** parameters, int pcnt, userrec* user)
4331 /* Remote STATS, the server is within the 2nd parameter */
4332 std::deque<std::string> params;
4333 params.push_back(parameters[0]);
4334 params.push_back(parameters[1]);
4335 /* Send it out remotely, generate no reply yet */
4336 TreeServer* s = Utils->FindServerMask(parameters[1]);
4339 params[1] = s->GetName();
4340 Utils->DoOneToOne(user->nick, "STATS", params, s->GetName());
4344 user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]);
4351 // Ok, prepare to be confused.
4352 // After much mulling over how to approach this, it struck me that
4353 // the 'usual' way of doing a /MAP isnt the best way. Instead of
4354 // keeping track of a ton of ascii characters, and line by line
4355 // under recursion working out where to place them using multiplications
4356 // and divisons, we instead render the map onto a backplane of characters
4357 // (a character matrix), then draw the branches as a series of "L" shapes
4358 // from the nodes. This is not only friendlier on CPU it uses less stack.
4360 void HandleMap(const char** parameters, int pcnt, userrec* user)
4362 // This array represents a virtual screen which we will
4363 // "scratch" draw to, as the console device of an irc
4364 // client does not provide for a proper terminal.
4366 float totservers = 0;
4367 char matrix[128][80];
4368 for (unsigned int t = 0; t < 128; t++)
4370 matrix[t][0] = '\0';
4373 // The only recursive bit is called here.
4374 ShowMap(Utils->TreeRoot,user,0,matrix,totusers,totservers);
4375 // Process each line one by one. The algorithm has a limit of
4376 // 128 servers (which is far more than a spanning tree should have
4377 // anyway, so we're ok). This limit can be raised simply by making
4378 // the character matrix deeper, 128 rows taking 10k of memory.
4379 for (int l = 1; l < line; l++)
4381 // scan across the line looking for the start of the
4382 // servername (the recursive part of the algorithm has placed
4383 // the servers at indented positions depending on what they
4385 int first_nonspace = 0;
4386 while (matrix[l][first_nonspace] == ' ')
4391 // Draw the `- (corner) section: this may be overwritten by
4392 // another L shape passing along the same vertical pane, becoming
4393 // a |- (branch) section instead.
4394 matrix[l][first_nonspace] = '-';
4395 matrix[l][first_nonspace-1] = '`';
4397 // Draw upwards until we hit the parent server, causing possibly
4398 // other corners (`-) to become branches (|-)
4399 while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`'))
4401 matrix[l2][first_nonspace-1] = '|';
4405 // dump the whole lot to the user. This is the easy bit, honest.
4406 for (int t = 0; t < line; t++)
4408 user->WriteServ("006 %s :%s",user->nick,&matrix[t][0]);
4410 float avg_users = totusers / totservers;
4411 user->WriteServ("270 %s :%.0f server%s and %.0f user%s, average %.2f users per server",user->nick,totservers,(totservers > 1 ? "s" : ""),totusers,(totusers > 1 ? "s" : ""),avg_users);
4412 user->WriteServ("007 %s :End of /MAP",user->nick);
4416 int HandleSquit(const char** parameters, int pcnt, userrec* user)
4418 TreeServer* s = Utils->FindServerMask(parameters[0]);
4421 if (s == Utils->TreeRoot)
4423 user->WriteServ("NOTICE %s :*** SQUIT: Foolish mortal, you cannot make a server SQUIT itself! (%s matches local server name)",user->nick,parameters[0]);
4426 TreeSocket* sock = s->GetSocket();
4429 ServerInstance->Log(DEBUG,"Splitting server %s",s->GetName().c_str());
4430 ServerInstance->SNO->WriteToSnoMask('l',"SQUIT: Server \002%s\002 removed from network by %s",parameters[0],user->nick);
4431 sock->Squit(s,"Server quit by "+std::string(user->nick)+"!"+std::string(user->ident)+"@"+std::string(user->host));
4432 ServerInstance->SE->DelFd(sock);
4438 user->WriteServ("NOTICE %s :*** SQUIT: The server \002%s\002 is not directly connected.",user->nick,parameters[0]);
4443 user->WriteServ("NOTICE %s :*** SQUIT: The server \002%s\002 does not exist on the network.",user->nick,parameters[0]);
4448 int HandleTime(const char** parameters, int pcnt, userrec* user)
4450 if ((IS_LOCAL(user)) && (pcnt))
4452 TreeServer* found = Utils->FindServerMask(parameters[0]);
4455 // we dont' override for local server
4456 if (found == Utils->TreeRoot)
4459 std::deque<std::string> params;
4460 params.push_back(found->GetName());
4461 params.push_back(user->nick);
4462 Utils->DoOneToOne(ServerInstance->Config->ServerName,"TIME",params,found->GetName());
4466 user->WriteServ("402 %s %s :No such server",user->nick,parameters[0]);
4472 int HandleRemoteWhois(const char** parameters, int pcnt, userrec* user)
4474 if ((IS_LOCAL(user)) && (pcnt > 1))
4476 userrec* remote = ServerInstance->FindNick(parameters[1]);
4477 if ((remote) && (remote->GetFd() < 0))
4479 std::deque<std::string> params;
4480 params.push_back(parameters[1]);
4481 Utils->DoOneToOne(user->nick,"IDLE",params,remote->server);
4486 user->WriteServ("401 %s %s :No such nick/channel",user->nick, parameters[1]);
4487 user->WriteServ("318 %s %s :End of /WHOIS list.",user->nick, parameters[1]);
4494 void DoPingChecks(time_t curtime)
4496 for (unsigned int j = 0; j < Utils->TreeRoot->ChildCount(); j++)
4498 TreeServer* serv = Utils->TreeRoot->GetChild(j);
4499 TreeSocket* sock = serv->GetSocket();
4502 if (curtime >= serv->NextPingTime())
4504 if (serv->AnsweredLastPing())
4506 sock->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" PING "+serv->GetName());
4507 serv->SetNextPingTime(curtime + 60);
4511 // they didnt answer, boot them
4512 ServerInstance->SNO->WriteToSnoMask('l',"Server \002%s\002 pinged out",serv->GetName().c_str());
4513 sock->Squit(serv,"Ping timeout");
4514 ServerInstance->SE->DelFd(sock);
4524 void ConnectServer(Link* x)
4528 /* Do we already have an IP? If so, no need to resolve it. */
4529 if (insp_aton(x->IPAddr.c_str(), &binip) > 0)
4531 TreeSocket* newsocket = new TreeSocket(Utils, ServerInstance, x->IPAddr,x->Port,false,x->Timeout ? x->Timeout : 10,x->Name.c_str());
4532 if (newsocket->GetFd() > -1)
4534 /* Handled automatically on success */
4538 ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(),strerror(errno));
4540 Utils->DoFailOver(x);
4547 ServernameResolver* snr = new ServernameResolver((Module*)this, Utils, ServerInstance,x->IPAddr, *x);
4548 ServerInstance->AddResolver(snr);
4550 catch (ModuleException& e)
4552 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
4553 Utils->DoFailOver(x);
4558 void AutoConnectServers(time_t curtime)
4560 for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
4562 if ((x->AutoConnect) && (curtime >= x->NextConnectTime))
4564 ServerInstance->Log(DEBUG,"Auto-Connecting %s",x->Name.c_str());
4565 x->NextConnectTime = curtime + x->AutoConnect;
4566 TreeServer* CheckDupe = Utils->FindServer(x->Name.c_str());
4567 if (x->FailOver.length())
4569 TreeServer* CheckFailOver = Utils->FindServer(x->FailOver.c_str());
4572 /* The failover for this server is currently a member of the network.
4573 * The failover probably succeeded, where the main link did not.
4574 * Don't try the main link until the failover is gone again.
4581 // an autoconnected server is not connected. Check if its time to connect it
4582 ServerInstance->SNO->WriteToSnoMask('l',"AUTOCONNECT: Auto-connecting server \002%s\002 (%lu seconds until next attempt)",x->Name.c_str(),x->AutoConnect);
4583 this->ConnectServer(&(*x));
4589 int HandleVersion(const char** parameters, int pcnt, userrec* user)
4591 // we've already checked if pcnt > 0, so this is safe
4592 TreeServer* found = Utils->FindServerMask(parameters[0]);
4595 std::string Version = found->GetVersion();
4596 user->WriteServ("351 %s :%s",user->nick,Version.c_str());
4597 if (found == Utils->TreeRoot)
4599 std::stringstream out(ServerInstance->Config->data005);
4600 std::string token = "";
4601 std::string line5 = "";
4602 int token_counter = 0;
4607 line5 = line5 + token + " ";
4610 if ((token_counter >= 13) || (out.eof() == true))
4612 user->WriteServ("005 %s %s:are supported by this server",user->nick,line5.c_str());
4621 user->WriteServ("402 %s %s :No such server",user->nick,parameters[0]);
4626 int HandleConnect(const char** parameters, int pcnt, userrec* user)
4628 for (std::vector<Link>::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
4630 if (ServerInstance->MatchText(x->Name.c_str(),parameters[0]))
4632 TreeServer* CheckDupe = Utils->FindServer(x->Name.c_str());
4635 user->WriteServ("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);
4636 ConnectServer(&(*x));
4641 user->WriteServ("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());
4646 user->WriteServ("NOTICE %s :*** CONNECT: No server matching \002%s\002 could be found in the config file.",user->nick,parameters[0]);
4650 void BroadcastTimeSync()
4652 std::deque<std::string> params;
4653 params.push_back(ConvToStr(ServerInstance->Time(true)));
4654 Utils->DoOneToMany(Utils->TreeRoot->GetName(), "TIMESET", params);
4657 virtual int OnStats(char statschar, userrec* user, string_list &results)
4659 if ((statschar == 'c') || (statschar == 'n'))
4661 for (unsigned int i = 0; i < Utils->LinkBlocks.size(); i++)
4663 results.push_back(std::string(ServerInstance->Config->ServerName)+" 213 "+user->nick+" "+statschar+" *@"+(Utils->LinkBlocks[i].HiddenFromStats ? "<hidden>" : Utils->LinkBlocks[i].IPAddr)+" * "+Utils->LinkBlocks[i].Name.c_str()+" "+ConvToStr(Utils->LinkBlocks[i].Port)+" "+(Utils->LinkBlocks[i].EncryptionKey != "" ? 'e' : '-')+(Utils->LinkBlocks[i].AutoConnect ? 'a' : '-')+'s');
4664 if (statschar == 'c')
4665 results.push_back(std::string(ServerInstance->Config->ServerName)+" 244 "+user->nick+" H * * "+Utils->LinkBlocks[i].Name.c_str());
4667 results.push_back(std::string(ServerInstance->Config->ServerName)+" 219 "+user->nick+" "+statschar+" :End of /STATS report");
4668 ServerInstance->SNO->WriteToSnoMask('t',"Notice: %s '%c' requested by %s (%s@%s)",(!strcmp(user->server,ServerInstance->Config->ServerName) ? "Stats" : "Remote stats"),statschar,user->nick,user->ident,user->host);
4674 virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, bool validated, const std::string &original_line)
4676 /* If the command doesnt appear to be valid, we dont want to mess with it. */
4680 if (command == "CONNECT")
4682 return this->HandleConnect(parameters,pcnt,user);
4684 else if (command == "STATS")
4686 return this->HandleStats(parameters,pcnt,user);
4688 else if (command == "MOTD")
4690 return this->HandleMotd(parameters,pcnt,user);
4692 else if (command == "ADMIN")
4694 return this->HandleAdmin(parameters,pcnt,user);
4696 else if (command == "SQUIT")
4698 return this->HandleSquit(parameters,pcnt,user);
4700 else if (command == "MAP")
4702 this->HandleMap(parameters,pcnt,user);
4705 else if ((command == "TIME") && (pcnt > 0))
4707 return this->HandleTime(parameters,pcnt,user);
4709 else if (command == "LUSERS")
4711 this->HandleLusers(parameters,pcnt,user);
4714 else if (command == "LINKS")
4716 this->HandleLinks(parameters,pcnt,user);
4719 else if (command == "WHOIS")
4724 return this->HandleRemoteWhois(parameters,pcnt,user);
4727 else if ((command == "VERSION") && (pcnt > 0))
4729 this->HandleVersion(parameters,pcnt,user);
4736 virtual void OnPostCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, CmdResult result, const std::string &original_line)
4738 if ((result == CMD_SUCCESS) && (ServerInstance->IsValidModuleCommand(command, pcnt, user)))
4740 // this bit of code cleverly routes all module commands
4741 // to all remote severs *automatically* so that modules
4742 // can just handle commands locally, without having
4743 // to have any special provision in place for remote
4744 // commands and linking protocols.
4745 std::deque<std::string> params;
4747 for (int j = 0; j < pcnt; j++)
4749 if (strchr(parameters[j],' '))
4751 params.push_back(":" + std::string(parameters[j]));
4755 params.push_back(std::string(parameters[j]));
4758 ServerInstance->Log(DEBUG,"Globally route '%s'",command.c_str());
4759 Utils->DoOneToMany(user->nick,command,params);
4763 virtual void OnGetServerDescription(const std::string &servername,std::string &description)
4765 TreeServer* s = Utils->FindServer(servername);
4768 description = s->GetDesc();
4772 virtual void OnUserInvite(userrec* source,userrec* dest,chanrec* channel)
4774 if (IS_LOCAL(source))
4776 std::deque<std::string> params;
4777 params.push_back(dest->nick);
4778 params.push_back(channel->name);
4779 Utils->DoOneToMany(source->nick,"INVITE",params);
4783 virtual void OnPostLocalTopicChange(userrec* user, chanrec* chan, const std::string &topic)
4785 std::deque<std::string> params;
4786 params.push_back(chan->name);
4787 params.push_back(":"+topic);
4788 Utils->DoOneToMany(user->nick,"TOPIC",params);
4791 virtual void OnWallops(userrec* user, const std::string &text)
4795 std::deque<std::string> params;
4796 params.push_back(":"+text);
4797 Utils->DoOneToMany(user->nick,"WALLOPS",params);
4801 virtual void OnUserNotice(userrec* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list)
4803 if (target_type == TYPE_USER)
4805 userrec* d = (userrec*)dest;
4806 if ((d->GetFd() < 0) && (IS_LOCAL(user)))
4808 std::deque<std::string> params;
4810 params.push_back(d->nick);
4811 params.push_back(":"+text);
4812 Utils->DoOneToOne(user->nick,"NOTICE",params,d->server);
4815 else if (target_type == TYPE_CHANNEL)
4819 chanrec *c = (chanrec*)dest;
4822 std::string cname = c->name;
4824 cname = status + cname;
4825 TreeServerList list;
4826 Utils->GetListOfServersForChannel(c,list,status,exempt_list);
4828 for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
4830 TreeSocket* Sock = i->second->GetSocket();
4832 Sock->WriteLine(":"+std::string(user->nick)+" NOTICE "+cname+" :"+text);
4837 else if (target_type == TYPE_SERVER)
4841 char* target = (char*)dest;
4842 std::deque<std::string> par;
4843 par.push_back(target);
4844 par.push_back(":"+text);
4845 Utils->DoOneToMany(user->nick,"NOTICE",par);
4850 virtual void OnUserMessage(userrec* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list)
4852 if (target_type == TYPE_USER)
4854 // route private messages which are targetted at clients only to the server
4855 // which needs to receive them
4856 userrec* d = (userrec*)dest;
4857 if ((d->GetFd() < 0) && (IS_LOCAL(user)))
4859 std::deque<std::string> params;
4861 params.push_back(d->nick);
4862 params.push_back(":"+text);
4863 Utils->DoOneToOne(user->nick,"PRIVMSG",params,d->server);
4866 else if (target_type == TYPE_CHANNEL)
4870 chanrec *c = (chanrec*)dest;
4873 std::string cname = c->name;
4875 cname = status + cname;
4876 TreeServerList list;
4877 Utils->GetListOfServersForChannel(c,list,status,exempt_list);
4879 for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
4881 TreeSocket* Sock = i->second->GetSocket();
4883 Sock->WriteLine(":"+std::string(user->nick)+" PRIVMSG "+cname+" :"+text);
4888 else if (target_type == TYPE_SERVER)
4892 char* target = (char*)dest;
4893 std::deque<std::string> par;
4894 par.push_back(target);
4895 par.push_back(":"+text);
4896 Utils->DoOneToMany(user->nick,"PRIVMSG",par);
4901 virtual void OnBackgroundTimer(time_t curtime)
4903 AutoConnectServers(curtime);
4904 DoPingChecks(curtime);
4907 virtual void OnUserJoin(userrec* user, chanrec* channel)
4909 // Only do this for local users
4912 std::deque<std::string> params;
4914 params.push_back(channel->name);
4915 // set up their permissions and the channel TS with FJOIN.
4916 // All users are FJOINed now, because a module may specify
4917 // new joining permissions for the user.
4919 params.push_back(channel->name);
4920 params.push_back(ConvToStr(channel->age));
4921 params.push_back(std::string(channel->GetAllPrefixChars(user))+","+std::string(user->nick));
4922 Utils->DoOneToMany(ServerInstance->Config->ServerName,"FJOIN",params);
4923 if (channel->GetUserCounter() == 1)
4925 /* First user in, sync the modes for the channel */
4927 /* This is safe, all inspircd servers default to +nt */
4928 params.push_back("+nt");
4929 Utils->DoOneToMany(ServerInstance->Config->ServerName,"FMODE",params);
4934 virtual void OnChangeHost(userrec* user, const std::string &newhost)
4936 // only occurs for local clients
4937 if (user->registered != REG_ALL)
4939 std::deque<std::string> params;
4940 params.push_back(newhost);
4941 Utils->DoOneToMany(user->nick,"FHOST",params);
4944 virtual void OnChangeName(userrec* user, const std::string &gecos)
4946 // only occurs for local clients
4947 if (user->registered != REG_ALL)
4949 std::deque<std::string> params;
4950 params.push_back(gecos);
4951 Utils->DoOneToMany(user->nick,"FNAME",params);
4954 virtual void OnUserPart(userrec* user, chanrec* channel, const std::string &partmessage)
4958 std::deque<std::string> params;
4959 params.push_back(channel->name);
4960 if (partmessage != "")
4961 params.push_back(":"+partmessage);
4962 Utils->DoOneToMany(user->nick,"PART",params);
4966 virtual void OnUserConnect(userrec* user)
4968 char agestr[MAXBUF];
4971 std::deque<std::string> params;
4972 snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age);
4973 params.push_back(agestr);
4974 params.push_back(user->nick);
4975 params.push_back(user->host);
4976 params.push_back(user->dhost);
4977 params.push_back(user->ident);
4978 params.push_back("+"+std::string(user->FormatModes()));
4979 params.push_back(user->GetIPString());
4980 params.push_back(":"+std::string(user->fullname));
4981 Utils->DoOneToMany(ServerInstance->Config->ServerName,"NICK",params);
4983 // User is Local, change needs to be reflected!
4984 TreeServer* SourceServer = Utils->FindServer(user->server);
4987 SourceServer->AddUserCount();
4993 virtual void OnUserQuit(userrec* user, const std::string &reason)
4995 if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
4997 std::deque<std::string> params;
4998 params.push_back(":"+reason);
4999 Utils->DoOneToMany(user->nick,"QUIT",params);
5001 // Regardless, We need to modify the user Counts..
5002 TreeServer* SourceServer = Utils->FindServer(user->server);
5005 SourceServer->DelUserCount();
5010 virtual void OnUserPostNick(userrec* user, const std::string &oldnick)
5014 std::deque<std::string> params;
5015 params.push_back(user->nick);
5016 Utils->DoOneToMany(oldnick,"NICK",params);
5020 virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason)
5022 if ((source) && (IS_LOCAL(source)))
5024 std::deque<std::string> params;
5025 params.push_back(chan->name);
5026 params.push_back(user->nick);
5027 params.push_back(":"+reason);
5028 Utils->DoOneToMany(source->nick,"KICK",params);
5032 std::deque<std::string> params;
5033 params.push_back(chan->name);
5034 params.push_back(user->nick);
5035 params.push_back(":"+reason);
5036 Utils->DoOneToMany(ServerInstance->Config->ServerName,"KICK",params);
5040 virtual void OnRemoteKill(userrec* source, userrec* dest, const std::string &reason)
5042 std::deque<std::string> params;
5043 params.push_back(dest->nick);
5044 params.push_back(":"+reason);
5045 Utils->DoOneToMany(source->nick,"KILL",params);
5048 virtual void OnRehash(const std::string ¶meter)
5050 if (parameter != "")
5052 std::deque<std::string> params;
5053 params.push_back(parameter);
5054 Utils->DoOneToMany(ServerInstance->Config->ServerName,"REHASH",params);
5056 if (ServerInstance->MatchText(ServerInstance->Config->ServerName,parameter))
5058 ServerInstance->WriteOpers("*** Remote rehash initiated from server \002%s\002",ServerInstance->Config->ServerName);
5059 ServerInstance->RehashServer();
5062 Utils->ReadConfiguration(false);
5065 // note: the protocol does not allow direct umode +o except
5066 // via NICK with 8 params. sending OPERTYPE infers +o modechange
5068 virtual void OnOper(userrec* user, const std::string &opertype)
5072 std::deque<std::string> params;
5073 params.push_back(opertype);
5074 Utils->DoOneToMany(user->nick,"OPERTYPE",params);
5078 void OnLine(userrec* source, const std::string &host, bool adding, char linetype, long duration, const std::string &reason)
5082 /* Server-set lines */
5084 snprintf(data,MAXBUF,"%c %s %s %lu %lu :%s", linetype, host.c_str(), ServerInstance->Config->ServerName, (unsigned long)ServerInstance->Time(false),
5085 (unsigned long)duration, reason.c_str());
5086 std::deque<std::string> params;
5087 params.push_back(data);
5088 Utils->DoOneToMany(ServerInstance->Config->ServerName, "ADDLINE", params);
5092 if (IS_LOCAL(source))
5095 snprintf(type,8,"%cLINE",linetype);
5096 std::string stype = type;
5099 char sduration[MAXBUF];
5100 snprintf(sduration,MAXBUF,"%ld",duration);
5101 std::deque<std::string> params;
5102 params.push_back(host);
5103 params.push_back(sduration);
5104 params.push_back(":"+reason);
5105 Utils->DoOneToMany(source->nick,stype,params);
5109 std::deque<std::string> params;
5110 params.push_back(host);
5111 Utils->DoOneToMany(source->nick,stype,params);
5117 virtual void OnAddGLine(long duration, userrec* source, const std::string &reason, const std::string &hostmask)
5119 OnLine(source,hostmask,true,'G',duration,reason);
5122 virtual void OnAddZLine(long duration, userrec* source, const std::string &reason, const std::string &ipmask)
5124 OnLine(source,ipmask,true,'Z',duration,reason);
5127 virtual void OnAddQLine(long duration, userrec* source, const std::string &reason, const std::string &nickmask)
5129 OnLine(source,nickmask,true,'Q',duration,reason);
5132 virtual void OnAddELine(long duration, userrec* source, const std::string &reason, const std::string &hostmask)
5134 OnLine(source,hostmask,true,'E',duration,reason);
5137 virtual void OnDelGLine(userrec* source, const std::string &hostmask)
5139 OnLine(source,hostmask,false,'G',0,"");
5142 virtual void OnDelZLine(userrec* source, const std::string &ipmask)
5144 OnLine(source,ipmask,false,'Z',0,"");
5147 virtual void OnDelQLine(userrec* source, const std::string &nickmask)
5149 OnLine(source,nickmask,false,'Q',0,"");
5152 virtual void OnDelELine(userrec* source, const std::string &hostmask)
5154 OnLine(source,hostmask,false,'E',0,"");
5157 virtual void OnMode(userrec* user, void* dest, int target_type, const std::string &text)
5159 if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
5161 if (target_type == TYPE_USER)
5163 userrec* u = (userrec*)dest;
5164 std::deque<std::string> params;
5165 params.push_back(u->nick);
5166 params.push_back(text);
5167 Utils->DoOneToMany(user->nick,"MODE",params);
5171 chanrec* c = (chanrec*)dest;
5172 std::deque<std::string> params;
5173 params.push_back(c->name);
5174 params.push_back(text);
5175 Utils->DoOneToMany(user->nick,"MODE",params);
5180 virtual void OnSetAway(userrec* user)
5184 std::deque<std::string> params;
5185 params.push_back(":"+std::string(user->awaymsg));
5186 Utils->DoOneToMany(user->nick,"AWAY",params);
5190 virtual void OnCancelAway(userrec* user)
5194 std::deque<std::string> params;
5196 Utils->DoOneToMany(user->nick,"AWAY",params);
5200 virtual void ProtoSendMode(void* opaque, int target_type, void* target, const std::string &modeline)
5202 TreeSocket* s = (TreeSocket*)opaque;
5205 if (target_type == TYPE_USER)
5207 userrec* u = (userrec*)target;
5208 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" FMODE "+u->nick+" "+ConvToStr(u->age)+" "+modeline);
5212 chanrec* c = (chanrec*)target;
5213 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age)+" "+modeline);
5218 virtual void ProtoSendMetaData(void* opaque, int target_type, void* target, const std::string &extname, const std::string &extdata)
5220 TreeSocket* s = (TreeSocket*)opaque;
5223 if (target_type == TYPE_USER)
5225 userrec* u = (userrec*)target;
5226 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA "+u->nick+" "+extname+" :"+extdata);
5228 else if (target_type == TYPE_OTHER)
5230 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA * "+extname+" :"+extdata);
5232 else if (target_type == TYPE_CHANNEL)
5234 chanrec* c = (chanrec*)target;
5235 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA "+c->name+" "+extname+" :"+extdata);
5240 virtual void OnEvent(Event* event)
5242 std::deque<std::string>* params = (std::deque<std::string>*)event->GetData();
5244 if (event->GetEventID() == "send_metadata")
5246 if (params->size() < 3)
5248 (*params)[2] = ":" + (*params)[2];
5249 Utils->DoOneToMany(ServerInstance->Config->ServerName,"METADATA",*params);
5251 else if (event->GetEventID() == "send_topic")
5253 if (params->size() < 2)
5255 (*params)[1] = ":" + (*params)[1];
5256 params->insert(params->begin() + 1,ServerInstance->Config->ServerName);
5257 params->insert(params->begin() + 1,ConvToStr(ServerInstance->Time(true)));
5258 Utils->DoOneToMany(ServerInstance->Config->ServerName,"FTOPIC",*params);
5260 else if (event->GetEventID() == "send_mode")
5262 if (params->size() < 2)
5264 // Insert the TS value of the object, either userrec or chanrec
5266 userrec* a = ServerInstance->FindNick((*params)[0]);
5273 chanrec* a = ServerInstance->FindChan((*params)[0]);
5279 params->insert(params->begin() + 1,ConvToStr(ourTS));
5280 Utils->DoOneToMany(ServerInstance->Config->ServerName,"FMODE",*params);
5282 else if (event->GetEventID() == "send_mode_explicit")
5284 if (params->size() < 2)
5286 Utils->DoOneToMany(ServerInstance->Config->ServerName,"MODE",*params);
5288 else if (event->GetEventID() == "send_opers")
5290 if (params->size() < 1)
5292 (*params)[0] = ":" + (*params)[0];
5293 Utils->DoOneToMany(ServerInstance->Config->ServerName,"OPERNOTICE",*params);
5295 else if (event->GetEventID() == "send_modeset")
5297 if (params->size() < 2)
5299 (*params)[1] = ":" + (*params)[1];
5300 Utils->DoOneToMany(ServerInstance->Config->ServerName,"MODENOTICE",*params);
5302 else if (event->GetEventID() == "send_snoset")
5304 if (params->size() < 2)
5306 (*params)[1] = ":" + (*params)[1];
5307 Utils->DoOneToMany(ServerInstance->Config->ServerName,"SNONOTICE",*params);
5309 else if (event->GetEventID() == "send_push")
5311 if (params->size() < 2)
5314 userrec *a = ServerInstance->FindNick((*params)[0]);
5319 (*params)[1] = ":" + (*params)[1];
5320 Utils->DoOneToOne(ServerInstance->Config->ServerName, "PUSH", *params, a->server);
5324 virtual ~ModuleSpanningTree()
5326 ServerInstance->Log(DEBUG,"Performing unload of spanningtree!");
5327 /* This will also free the listeners */
5330 ServerInstance->Timers->DelTimer(SyncTimer);
5333 virtual Version GetVersion()
5335 return Version(1,1,0,2,VF_VENDOR,API_VERSION);
5338 void Implements(char* List)
5340 List[I_OnPreCommand] = List[I_OnGetServerDescription] = List[I_OnUserInvite] = List[I_OnPostLocalTopicChange] = 1;
5341 List[I_OnWallops] = List[I_OnUserNotice] = List[I_OnUserMessage] = List[I_OnBackgroundTimer] = 1;
5342 List[I_OnUserJoin] = List[I_OnChangeHost] = List[I_OnChangeName] = List[I_OnUserPart] = List[I_OnUserConnect] = 1;
5343 List[I_OnUserQuit] = List[I_OnUserPostNick] = List[I_OnUserKick] = List[I_OnRemoteKill] = List[I_OnRehash] = 1;
5344 List[I_OnOper] = List[I_OnAddGLine] = List[I_OnAddZLine] = List[I_OnAddQLine] = List[I_OnAddELine] = 1;
5345 List[I_OnDelGLine] = List[I_OnDelZLine] = List[I_OnDelQLine] = List[I_OnDelELine] = List[I_ProtoSendMode] = List[I_OnMode] = 1;
5346 List[I_OnStats] = List[I_ProtoSendMetaData] = List[I_OnEvent] = List[I_OnSetAway] = List[I_OnCancelAway] = List[I_OnPostCommand] = 1;
5349 /* It is IMPORTANT that m_spanningtree is the last module in the chain
5350 * so that any activity it sees is FINAL, e.g. we arent going to send out
5351 * a NICK message before m_cloaking has finished putting the +x on the user,
5353 * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
5354 * the module call queue.
5356 Priority Prioritize()
5358 return PRIORITY_LAST;
5362 TimeSyncTimer::TimeSyncTimer(InspIRCd *Inst, ModuleSpanningTree *Mod) : InspTimer(43200, Inst->Time()), Instance(Inst), Module(Mod)
5366 void TimeSyncTimer::Tick(time_t TIME)
5368 Module->BroadcastTimeSync();
5369 Module->SyncTimer = new TimeSyncTimer(Instance, Module);
5370 Instance->Timers->AddTimer(Module->SyncTimer);
5373 void SpanningTreeUtilities::DoFailOver(Link* x)
5375 if (x->FailOver.length())
5377 if (x->FailOver == x->Name)
5379 ServerInstance->SNO->WriteToSnoMask('l',"FAILOVER: Some muppet configured the failover for server \002%s\002 to point at itself. Not following it!", x->Name.c_str());
5382 Link* TryThisOne = this->FindLink(x->FailOver.c_str());
5385 ServerInstance->SNO->WriteToSnoMask('l',"FAILOVER: Trying failover link for \002%s\002: \002%s\002...", x->Name.c_str(), TryThisOne->Name.c_str());
5386 Creator->ConnectServer(TryThisOne);
5390 ServerInstance->SNO->WriteToSnoMask('l',"FAILOVER: Invalid failover server specified for server \002%s\002, will not follow!", x->Name.c_str());
5395 Link* SpanningTreeUtilities::FindLink(const std::string& name)
5397 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
5399 if (ServerInstance->MatchText(x->Name.c_str(), name.c_str()))
5407 class ModuleSpanningTreeFactory : public ModuleFactory
5410 ModuleSpanningTreeFactory()
5414 ~ModuleSpanningTreeFactory()
5418 virtual Module * CreateModule(InspIRCd* Me)
5420 return new ModuleSpanningTree(Me);
5426 extern "C" void * init_module( void )
5428 return new ModuleSpanningTreeFactory;