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 */
21 #include "configreader.h"
25 #include "commands/cmd_whois.h"
26 #include "commands/cmd_stats.h"
31 #include "cull_list.h"
34 #define nspace __gnu_cxx
37 /** If you make a change which breaks the protocol, increment this.
38 * If you completely change the protocol, completely change the number.
40 const long ProtocolVersion = 1100;
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.
63 using irc::sockets::MatchCIDR;
65 class ModuleSpanningTree;
66 static ModuleSpanningTree* TreeProtocolModule;
67 static InspIRCd* ServerInstance;
69 /* Any socket can have one of five states at any one time.
70 * The LISTENER state indicates a socket which is listening
71 * for connections. It cannot receive data itself, only incoming
73 * The CONNECTING state indicates an outbound socket which is
74 * waiting to be writeable.
75 * The WAIT_AUTH_1 state indicates the socket is outbound and
76 * has successfully connected, but has not yet sent and received
78 * The WAIT_AUTH_2 state indicates that the socket is inbound
79 * (allocated by a LISTENER) but has not yet sent and received
81 * The CONNECTED state represents a fully authorized, fully
84 enum ServerState { LISTENER, CONNECTING, WAIT_AUTH_1, WAIT_AUTH_2, CONNECTED };
86 /* Foward declarations */
90 /* This variable represents the root of the server tree
91 * (for all intents and purposes, it's us)
95 /* This hash_map holds the hash equivalent of the server
96 * tree, used for rapid linear lookups.
98 typedef nspace::hash_map<std::string, TreeServer*, nspace::hash<string>, irc::StrHashComp> server_hash;
99 server_hash serverlist;
101 typedef nspace::hash_map<std::string, userrec*> uid_hash;
102 typedef nspace::hash_map<std::string, char*> sid_hash;
104 /* More forward declarations */
105 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string target);
106 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string omit);
107 bool DoOneToAllButSender(const char* prefix, const char* command, std::deque<std::string> ¶ms, std::string omit);
108 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> ¶ms);
109 bool DoOneToMany(const char* prefix, const char* command, std::deque<std::string> ¶ms);
110 bool DoOneToAllButSenderRaw(std::string data, std::string omit, std::string prefix, irc::string command, std::deque<std::string> ¶ms);
111 void ReadConfiguration(bool rebind);
113 /* Flatten links and /MAP for non-opers */
115 /* Hide U-Lined servers in /MAP and /LINKS */
118 std::vector<std::string> ValidIPs;
120 class UserManager : public classbase
131 std::string UserToUID(userrec* user)
136 std::string UIDToUser(const std::string &UID)
141 std::string CreateAndAdd(userrec* user)
146 std::string CreateAndAdd(const std::string &servername)
151 std::string ServerToSID(const std::string &servername)
156 std::string SIDToServer(const std::string &SID)
161 userrec* FindByID(const std::string &UID)
168 /* Each server in the tree is represented by one class of
169 * type TreeServer. A locally connected TreeServer can
170 * have a class of type TreeSocket associated with it, for
171 * remote servers, the TreeSocket entry will be NULL.
172 * Each server also maintains a pointer to its parent
173 * (NULL if this server is ours, at the top of the tree)
174 * and a pointer to its "Route" (see the comments in the
175 * constructors below), and also a dynamic list of pointers
176 * to its children which can be iterated recursively
177 * if required. Creating or deleting objects of type
178 i* TreeServer automatically maintains the hash_map of
179 * TreeServer items, deleting and inserting them as they
180 * are created and destroyed.
183 class TreeServer : public classbase
185 InspIRCd* ServerInstance; /* Creator */
186 TreeServer* Parent; /* Parent entry */
187 TreeServer* Route; /* Route entry */
188 std::vector<TreeServer*> Children; /* List of child objects */
189 irc::string ServerName; /* Server's name */
190 std::string ServerDesc; /* Server's description */
191 std::string VersionString; /* Version string or empty string */
192 int UserCount; /* Not used in this version */
193 int OperCount; /* Not used in this version */
194 TreeSocket* Socket; /* For directly connected servers this points at the socket object */
195 time_t NextPing; /* After this time, the server should be PINGed*/
196 bool LastPingWasGood; /* True if the server responded to the last PING with a PONG */
200 /* We don't use this constructor. Its a dummy, and won't cause any insertion
201 * of the TreeServer into the hash_map. See below for the two we DO use.
203 TreeServer(InspIRCd* Instance) : ServerInstance(Instance)
209 UserCount = OperCount = 0;
210 VersionString = ServerInstance->GetVersionString();
213 /* We use this constructor only to create the 'root' item, TreeRoot, which
214 * represents our own server. Therefore, it has no route, no parent, and
215 * no socket associated with it. Its version string is our own local version.
217 TreeServer(InspIRCd* Instance, std::string Name, std::string Desc) : ServerInstance(Instance), ServerName(Name.c_str()), ServerDesc(Desc)
221 UserCount = OperCount = 0;
222 VersionString = ServerInstance->GetVersionString();
224 Socket = NULL; /* Fix by brain */
228 /* When we create a new server, we call this constructor to initialize it.
229 * This constructor initializes the server's Route and Parent, and sets up
230 * its ping counters so that it will be pinged one minute from now.
232 TreeServer(InspIRCd* Instance, std::string Name, std::string Desc, TreeServer* Above, TreeSocket* Sock)
233 : ServerInstance(Instance), Parent(Above), ServerName(Name.c_str()), ServerDesc(Desc), Socket(Sock)
236 UserCount = OperCount = 0;
237 this->SetNextPingTime(time(NULL) + 60);
240 /* find the 'route' for this server (e.g. the one directly connected
241 * to the local server, which we can use to reach it)
243 * In the following example, consider we have just added a TreeServer
244 * class for server G on our network, of which we are server A.
245 * To route traffic to G (marked with a *) we must send the data to
246 * B (marked with a +) so this algorithm initializes the 'Route'
247 * value to point at whichever server traffic must be routed through
248 * to get here. If we were to try this algorithm with server B,
249 * the Route pointer would point at its own object ('this').
259 * We only run this algorithm when a server is created, as
260 * the routes remain constant while ever the server exists, and
261 * do not need to be re-calculated.
265 if (Route == TreeRoot)
271 while (this->Route->GetParent() != TreeRoot)
273 this->Route = Route->GetParent();
277 /* Because recursive code is slow and takes a lot of resources,
278 * we store two representations of the server tree. The first
279 * is a recursive structure where each server references its
280 * children and its parent, which is used for netbursts and
281 * netsplits to dump the whole dataset to the other server,
282 * and the second is used for very fast lookups when routing
283 * messages and is instead a hash_map, where each item can
284 * be referenced by its server name. The AddHashEntry()
285 * call below automatically inserts each TreeServer class
286 * into the hash_map as it is created. There is a similar
287 * maintainance call in the destructor to tidy up deleted
291 this->AddHashEntry();
294 int QuitUsers(const std::string &reason)
296 ServerInstance->Log(DEBUG,"Removing all users from server %s",this->ServerName.c_str());
297 const char* reason_s = reason.c_str();
298 std::vector<userrec*> time_to_die;
299 for (user_hash::iterator n = ServerInstance->clientlist.begin(); n != ServerInstance->clientlist.end(); n++)
301 if (!strcmp(n->second->server, this->ServerName.c_str()))
303 time_to_die.push_back(n->second);
306 for (std::vector<userrec*>::iterator n = time_to_die.begin(); n != time_to_die.end(); n++)
308 userrec* a = (userrec*)*n;
309 ServerInstance->Log(DEBUG,"Kill %s fd=%d",a->nick,a->GetFd());
311 userrec::QuitUser(ServerInstance,a,reason_s);
313 return time_to_die.size();
316 /* This method is used to add the structure to the
317 * hash_map for linear searches. It is only called
318 * by the constructors.
322 server_hash::iterator iter;
323 iter = serverlist.find(this->ServerName.c_str());
324 if (iter == serverlist.end())
325 serverlist[this->ServerName.c_str()] = this;
328 /* This method removes the reference to this object
329 * from the hash_map which is used for linear searches.
330 * It is only called by the default destructor.
334 server_hash::iterator iter;
335 iter = serverlist.find(this->ServerName.c_str());
336 if (iter != serverlist.end())
337 serverlist.erase(iter);
340 /* These accessors etc should be pretty self-
344 TreeServer* GetRoute()
349 std::string GetName()
351 return ServerName.c_str();
354 std::string GetDesc()
359 std::string GetVersion()
361 return VersionString;
364 void SetNextPingTime(time_t t)
367 LastPingWasGood = false;
370 time_t NextPingTime()
375 bool AnsweredLastPing()
377 return LastPingWasGood;
382 LastPingWasGood = true;
405 TreeSocket* GetSocket()
410 TreeServer* GetParent()
415 void SetVersion(std::string Version)
417 VersionString = Version;
420 unsigned int ChildCount()
422 return Children.size();
425 TreeServer* GetChild(unsigned int n)
427 if (n < Children.size())
429 /* Make sure they cant request
430 * an out-of-range object. After
431 * all we know what these programmer
432 * types are like *grin*.
442 void AddChild(TreeServer* Child)
444 Children.push_back(Child);
447 bool DelChild(TreeServer* Child)
449 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
460 /* Removes child nodes of this node, and of that node, etc etc.
461 * This is used during netsplits to automatically tidy up the
462 * server tree. It is slow, we don't use it for much else.
466 bool stillchildren = true;
467 while (stillchildren)
469 stillchildren = false;
470 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
472 TreeServer* s = (TreeServer*)*a;
476 stillchildren = true;
485 /* We'd better tidy up after ourselves, eh? */
486 this->DelHashEntry();
490 /* The Link class might as well be a struct,
491 * but this is C++ and we don't believe in structs (!).
492 * It holds the entire information of one <link>
493 * tag from the main config file. We maintain a list
494 * of them, and populate the list on rehash/load.
497 class Link : public classbase
503 std::string SendPass;
504 std::string RecvPass;
505 unsigned long AutoConnect;
506 time_t NextConnectTime;
507 std::string EncryptionKey;
508 bool HiddenFromStats;
509 irc::string FailOver;
512 void DoFailOver(Link* x);
513 Link* FindLink(const std::string& name);
515 /* The usual stuff for inspircd modules,
516 * plus the vector of Link classes which we
517 * use to store the <link> tags from the config
521 std::vector<Link> LinkBlocks;
523 /* Yay for fast searches!
524 * This is hundreds of times faster than recursion
525 * or even scanning a linked list, especially when
526 * there are more than a few servers to deal with.
529 TreeServer* FindServer(std::string ServerName)
531 server_hash::iterator iter;
532 iter = serverlist.find(ServerName.c_str());
533 if (iter != serverlist.end())
543 /* Returns the locally connected server we must route a
544 * message through to reach server 'ServerName'. This
545 * only applies to one-to-one and not one-to-many routing.
546 * See the comments for the constructor of TreeServer
549 TreeServer* BestRouteTo(std::string ServerName)
551 if (ServerName.c_str() == TreeRoot->GetName())
553 TreeServer* Found = FindServer(ServerName);
556 return Found->GetRoute();
564 /* Find the first server matching a given glob mask.
565 * Theres no find-using-glob method of hash_map [awwww :-(]
566 * so instead, we iterate over the list using an iterator
567 * and match each one until we get a hit. Yes its slow,
570 TreeServer* FindServerMask(std::string ServerName)
572 for (server_hash::iterator i = serverlist.begin(); i != serverlist.end(); i++)
574 if (match(i->first.c_str(),ServerName.c_str()))
580 /* A convenient wrapper that returns true if a server exists */
581 bool IsServer(std::string ServerName)
583 return (FindServer(ServerName) != NULL);
587 class cmd_rconnect : public command_t
591 cmd_rconnect (InspIRCd* Instance, Module* Callback) : command_t(Instance, "RCONNECT", 'o', 2), Creator(Callback)
593 this->source = "m_spanningtree.so";
594 syntax = "<remote-server-mask> <servermask>";
597 CmdResult Handle (const char** parameters, int pcnt, userrec *user)
599 user->WriteServ("NOTICE %s :*** RCONNECT: Sending remote connect to \002%s\002 to connect server \002%s\002.",user->nick,parameters[0],parameters[1]);
600 /* Is this aimed at our server? */
601 if (ServerInstance->MatchText(ServerInstance->Config->ServerName,parameters[0]))
603 /* Yes, initiate the given connect */
604 ServerInstance->SNO->WriteToSnoMask('l',"Remote CONNECT from %s matching \002%s\002, connecting server \002%s\002",user->nick,parameters[0],parameters[1]);
606 para[0] = parameters[1];
607 Creator->OnPreCommand("CONNECT", para, 1, user, true);
618 /* Every SERVER connection inbound or outbound is represented by
619 * an object of type TreeSocket.
620 * TreeSockets, being inherited from InspSocket, can be tied into
621 * the core socket engine, and we cn therefore receive activity events
622 * for them, just like activex objects on speed. (yes really, that
623 * is a technical term!) Each of these which relates to a locally
624 * connected server is assocated with it, by hooking it onto a
625 * TreeSocket class using its constructor. In this way, we can
626 * maintain a list of servers, some of which are directly connected,
627 * some of which are not.
630 class TreeSocket : public InspSocket
633 std::string in_buffer;
634 ServerState LinkState;
635 std::string InboundServerName;
636 std::string InboundDescription;
638 int num_lost_servers;
640 bool LastPingWasGood;
644 unsigned int keylength;
645 std::string ModuleList;
646 std::map<std::string,std::string> CapKeys;
650 /* Because most of the I/O gubbins are encapsulated within
651 * InspSocket, we just call the superclass constructor for
652 * most of the action, and append a few of our own values
655 TreeSocket(InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime)
656 : InspSocket(SI, host, port, listening, maxtime)
659 this->LinkState = LISTENER;
661 this->ctx_out = NULL;
664 TreeSocket(InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime, std::string ServerName)
665 : InspSocket(SI, host, port, listening, maxtime)
668 this->LinkState = CONNECTING;
670 this->ctx_out = NULL;
673 /* When a listening socket gives us a new file descriptor,
674 * we must associate it with a socket without creating a new
675 * connection. This constructor is used for this purpose.
677 TreeSocket(InspIRCd* SI, int newfd, char* ip)
678 : InspSocket(SI, newfd, ip)
680 this->LinkState = WAIT_AUTH_1;
682 this->ctx_out = NULL;
683 this->SendCapabilities();
694 void InitAES(std::string key,std::string SName)
701 Instance->Log(DEBUG,"Initialized AES key %s",key.c_str());
702 // key must be 16, 24, 32 etc bytes (multiple of 8)
703 keylength = key.length();
704 if (!(keylength == 16 || keylength == 24 || keylength == 32))
706 this->Instance->SNO->WriteToSnoMask('l',"\2ERROR\2: Key length for encryptionkey is not 16, 24 or 32 bytes in length!");
707 Instance->Log(DEBUG,"Key length not 16, 24 or 32 characters!");
711 this->Instance->SNO->WriteToSnoMask('l',"\2AES\2: Initialized %d bit encryption to server %s",keylength*8,SName.c_str());
712 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\
713 \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);
714 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\
715 \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);
719 /* When an outbound connection finishes connecting, we receive
720 * this event, and must send our SERVER string to the other
721 * side. If the other side is happy, as outlined in the server
722 * to server docs on the inspircd.org site, the other side
723 * will then send back its own server string.
725 virtual bool OnConnected()
727 if (this->LinkState == CONNECTING)
729 /* we do not need to change state here. */
730 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
732 if (x->Name == this->myhost)
734 this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] established.");
735 this->SendCapabilities();
736 if (x->EncryptionKey != "")
738 if (!(x->EncryptionKey.length() == 16 || x->EncryptionKey.length() == 24 || x->EncryptionKey.length() == 32))
740 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.");
744 this->WriteLine(std::string("AES ")+this->Instance->Config->ServerName);
745 this->InitAES(x->EncryptionKey,x->Name.c_str());
748 /* found who we're supposed to be connecting to, send the neccessary gubbins. */
749 this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc);
754 /* There is a (remote) chance that between the /CONNECT and the connection
755 * being accepted, some muppet has removed the <link> block and rehashed.
756 * If that happens the connection hangs here until it's closed. Unlikely
757 * and rather harmless.
759 this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2 lost link tag(!)");
763 virtual void OnError(InspSocketError e)
765 /* We don't handle this method, because all our
766 * dirty work is done in OnClose() (see below)
767 * which is still called on error conditions too.
769 if (e == I_ERR_CONNECT)
771 this->Instance->SNO->WriteToSnoMask('l',"Connection failed: Connection to \002"+myhost+"\002 refused");
772 Link* MyLink = FindLink(myhost);
778 virtual int OnDisconnect()
780 /* For the same reason as above, we don't
781 * handle OnDisconnect()
786 /* Recursively send the server tree with distances as hops.
787 * This is used during network burst to inform the other server
788 * (and any of ITS servers too) of what servers we know about.
789 * If at any point any of these servers already exist on the other
790 * end, our connection may be terminated. The hopcounts given
791 * by this function are relative, this doesn't matter so long as
792 * they are all >1, as all the remote servers re-calculate them
793 * to be relative too, with themselves as hop 0.
795 void SendServers(TreeServer* Current, TreeServer* s, int hops)
798 for (unsigned int q = 0; q < Current->ChildCount(); q++)
800 TreeServer* recursive_server = Current->GetChild(q);
801 if (recursive_server != s)
803 snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str());
804 this->WriteLine(command);
805 this->WriteLine(":"+recursive_server->GetName()+" VERSION :"+recursive_server->GetVersion());
806 /* down to next level */
807 this->SendServers(recursive_server, s, hops+1);
812 std::string MyCapabilities()
814 std::vector<std::string> modlist;
815 std::string capabilities = "";
817 for (int i = 0; i <= this->Instance->GetModuleCount(); i++)
819 if (this->Instance->modules[i]->GetVersion().Flags & VF_COMMON)
820 modlist.push_back(this->Instance->Config->module_names[i]);
822 sort(modlist.begin(),modlist.end());
823 for (unsigned int i = 0; i < modlist.size(); i++)
826 capabilities = capabilities + ",";
827 capabilities = capabilities + modlist[i];
832 void SendCapabilities()
834 irc::commasepstream modulelist(MyCapabilities());
836 this->WriteLine("CAPAB START");
838 /* Send module names, split at 509 length */
839 std::string item = "*";
840 std::string line = "CAPAB MODULES ";
841 while ((item = modulelist.GetToken()) != "")
843 if (line.length() + item.length() + 1 > 509)
845 this->WriteLine(line);
846 line = "CAPAB MODULES ";
849 if (line != "CAPAB MODULES ")
854 if (line != "CAPAB MODULES ")
855 this->WriteLine(line);
862 #ifdef SUPPORT_IP6LINKS
865 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));
867 this->WriteLine("CAPAB END");
870 /* Check a comma seperated list for an item */
871 bool HasItem(const std::string &list, const std::string &item)
873 irc::commasepstream seplist(list);
875 std::string item2 = "*";
876 while ((item2 = seplist.GetToken()) != "")
885 /* Isolate and return the elements that are different between two comma seperated lists */
886 std::string ListDifference(const std::string &one, const std::string &two)
888 irc::commasepstream list_one(one);
889 std::string item = "*";
890 std::string result = "";
891 while ((item = list_one.GetToken()) != "")
893 if (!HasItem(two, item))
902 bool Capab(std::deque<std::string> params)
904 if (params.size() < 1)
906 this->WriteLine("ERROR :Invalid number of parameters for CAPAB - Mismatched version");
910 if (params[0] == "START")
912 this->ModuleList = "";
913 this->CapKeys.clear();
915 else if (params[0] == "END")
917 std::string reason = "";
919 #ifdef SUPPORT_IP6LINKS
922 /* Compare ModuleList and check CapKeys...
923 * Maybe this could be tidier? -- Brain
925 if ((this->ModuleList != this->MyCapabilities()) && (this->ModuleList.length()))
927 std::string diff = ListDifference(this->ModuleList, this->MyCapabilities());
930 diff = "your server:" + ListDifference(this->MyCapabilities(), this->ModuleList);
934 diff = "this server:" + diff;
936 if (diff.length() == 12)
937 reason = "Module list in CAPAB is not alphabetically ordered, cannot compare lists.";
939 reason = "Modules loaded on these servers are not correctly matched, these modules are not loaded on " + diff;
942 if (((this->CapKeys.find("IP6SUPPORT") == this->CapKeys.end()) && (ip6support)) || ((this->CapKeys.find("IP6SUPPORT") != this->CapKeys.end()) && (this->CapKeys.find("IP6SUPPORT")->second != ConvToStr(ip6support))))
943 reason = "We don't both support linking to IPV6 servers";
945 if (((this->CapKeys.find("IP6NATIVE") != this->CapKeys.end()) && (this->CapKeys.find("IP6NATIVE")->second == "1")) && (!ip6support))
946 reason = "The remote server is IPV6 native, and we don't support linking to IPV6 servers";
948 if (((this->CapKeys.find("NICKMAX") == this->CapKeys.end()) || ((this->CapKeys.find("NICKMAX") != this->CapKeys.end()) && (this->CapKeys.find("NICKMAX")->second != ConvToStr(NICKMAX)))))
949 reason = "Maximum nickname lengths differ or remote nickname length not specified";
951 if (((this->CapKeys.find("PROTOCOL") == this->CapKeys.end()) || ((this->CapKeys.find("PROTOCOL") != this->CapKeys.end()) && (this->CapKeys.find("PROTOCOL")->second != ConvToStr(ProtocolVersion)))))
953 if (this->CapKeys.find("PROTOCOL") != this->CapKeys.end())
955 reason = "Mismatched protocol versions "+this->CapKeys.find("PROTOCOL")->second+" and "+ConvToStr(ProtocolVersion);
959 reason = "Protocol version not specified";
963 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))))
964 reason = "We don't both have halfop support enabled/disabled identically";
966 if (((this->CapKeys.find("IDENTMAX") == this->CapKeys.end()) || ((this->CapKeys.find("IDENTMAX") != this->CapKeys.end()) && (this->CapKeys.find("IDENTMAX")->second != ConvToStr(IDENTMAX)))))
967 reason = "Maximum ident lengths differ or remote ident length not specified";
969 if (((this->CapKeys.find("CHANMAX") == this->CapKeys.end()) || ((this->CapKeys.find("CHANMAX") != this->CapKeys.end()) && (this->CapKeys.find("CHANMAX")->second != ConvToStr(CHANMAX)))))
970 reason = "Maximum channel lengths differ or remote channel length not specified";
972 if (((this->CapKeys.find("MAXMODES") == this->CapKeys.end()) || ((this->CapKeys.find("MAXMODES") != this->CapKeys.end()) && (this->CapKeys.find("MAXMODES")->second != ConvToStr(MAXMODES)))))
973 reason = "Maximum modes per line differ or remote modes per line not specified";
975 if (((this->CapKeys.find("MAXQUIT") == this->CapKeys.end()) || ((this->CapKeys.find("MAXQUIT") != this->CapKeys.end()) && (this->CapKeys.find("MAXQUIT")->second != ConvToStr(MAXQUIT)))))
976 reason = "Maximum quit lengths differ or remote quit length not specified";
978 if (((this->CapKeys.find("MAXTOPIC") == this->CapKeys.end()) || ((this->CapKeys.find("MAXTOPIC") != this->CapKeys.end()) && (this->CapKeys.find("MAXTOPIC")->second != ConvToStr(MAXTOPIC)))))
979 reason = "Maximum topic lengths differ or remote topic length not specified";
981 if (((this->CapKeys.find("MAXKICK") == this->CapKeys.end()) || ((this->CapKeys.find("MAXKICK") != this->CapKeys.end()) && (this->CapKeys.find("MAXKICK")->second != ConvToStr(MAXKICK)))))
982 reason = "Maximum kick lengths differ or remote kick length not specified";
984 if (((this->CapKeys.find("MAXGECOS") == this->CapKeys.end()) || ((this->CapKeys.find("MAXGECOS") != this->CapKeys.end()) && (this->CapKeys.find("MAXGECOS")->second != ConvToStr(MAXGECOS)))))
985 reason = "Maximum GECOS (fullname) lengths differ or remote GECOS length not specified";
987 if (((this->CapKeys.find("MAXAWAY") == this->CapKeys.end()) || ((this->CapKeys.find("MAXAWAY") != this->CapKeys.end()) && (this->CapKeys.find("MAXAWAY")->second != ConvToStr(MAXAWAY)))))
988 reason = "Maximum awaymessage lengths differ or remote awaymessage length not specified";
992 this->WriteLine("ERROR :CAPAB negotiation failed: "+reason);
996 else if ((params[0] == "MODULES") && (params.size() == 2))
998 if (!this->ModuleList.length())
1000 this->ModuleList.append(params[1]);
1004 this->ModuleList.append(",");
1005 this->ModuleList.append(params[1]);
1008 else if ((params[0] == "CAPABILITIES") && (params.size() == 2))
1010 irc::tokenstream capabs(params[1]);
1011 std::string item = "*";
1012 while ((item = capabs.GetToken()) != "")
1014 /* Process each key/value pair */
1015 std::string::size_type equals = item.rfind('=');
1016 if (equals != std::string::npos)
1018 std::string var = item.substr(0, equals);
1019 std::string value = item.substr(equals+1, item.length());
1020 this->Instance->Log(DEBUG,"Key='%s' Value='%s'",var.c_str(),value.c_str());
1021 CapKeys[var] = value;
1029 /* This function forces this server to quit, removing this server
1030 * and any users on it (and servers and users below that, etc etc).
1031 * It's very slow and pretty clunky, but luckily unless your network
1032 * is having a REAL bad hair day, this function shouldnt be called
1033 * too many times a month ;-)
1035 void SquitServer(std::string &from, TreeServer* Current)
1037 /* recursively squit the servers attached to 'Current'.
1038 * We're going backwards so we don't remove users
1039 * while we still need them ;)
1041 for (unsigned int q = 0; q < Current->ChildCount(); q++)
1043 TreeServer* recursive_server = Current->GetChild(q);
1044 this->SquitServer(from,recursive_server);
1046 /* Now we've whacked the kids, whack self */
1048 num_lost_users += Current->QuitUsers(from);
1051 /* This is a wrapper function for SquitServer above, which
1052 * does some validation first and passes on the SQUIT to all
1053 * other remaining servers.
1055 void Squit(TreeServer* Current,std::string reason)
1057 if ((Current) && (Current != TreeRoot))
1059 std::deque<std::string> params;
1060 params.push_back(Current->GetName());
1061 params.push_back(":"+reason);
1062 DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
1063 if (Current->GetParent() == TreeRoot)
1065 this->Instance->WriteOpers("Server \002"+Current->GetName()+"\002 split: "+reason);
1069 this->Instance->WriteOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
1071 num_lost_servers = 0;
1073 std::string from = Current->GetParent()->GetName()+" "+Current->GetName();
1074 SquitServer(from, Current);
1076 Current->GetParent()->DelChild(Current);
1078 this->Instance->WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
1082 Instance->Log(DEFAULT,"Squit from unknown server");
1086 /* FMODE command - server mode with timestamp checks */
1087 bool ForceMode(std::string source, std::deque<std::string> ¶ms)
1089 /* Chances are this is a 1.0 FMODE without TS */
1090 if (params.size() < 3)
1092 this->WriteLine("ERROR :Version 1.0 FMODE sent to version 1.1 server");
1097 std::string sourceserv;
1099 /* Are we dealing with an FMODE from a user, or from a server? */
1100 userrec* who = this->Instance->FindNick(source);
1103 /* FMODE from a user, set sourceserv to the users server name */
1104 sourceserv = who->server;
1108 /* FMODE from a server, create a fake user to receive mode feedback */
1109 who = new userrec(this->Instance);
1110 who->SetFd(FD_MAGIC_NUMBER);
1111 smode = true; /* Setting this flag tells us we should free the userrec later */
1112 sourceserv = source; /* Set sourceserv to the actual source string */
1114 const char* modelist[64];
1117 memset(&modelist,0,sizeof(modelist));
1118 for (unsigned int q = 0; (q < params.size()) && (q < 64); q++)
1122 /* The timestamp is in this position.
1123 * We don't want to pass that up to the
1124 * server->client protocol!
1126 TS = atoi(params[q].c_str());
1130 /* Everything else is fine to append to the modelist */
1131 modelist[n++] = params[q].c_str();
1135 /* Extract the TS value of the object, either userrec or chanrec */
1136 userrec* dst = this->Instance->FindNick(params[0]);
1137 chanrec* chan = NULL;
1145 chan = this->Instance->FindChan(params[0]);
1152 /* TS is equal: Merge the mode changes, use voooodoooooo on modes
1157 Instance->Log(DEBUG,"Entering TS equality check");
1158 ModeHandler* mh = NULL;
1159 unsigned long paramptr = 3;
1160 std::string to_bounce = "";
1161 std::string to_keep = "";
1162 std::vector<std::string> params_to_keep;
1163 std::string params_to_bounce = "";
1165 char cur_change = 1;
1166 char old_change = 0;
1167 char old_bounce_change = 0;
1168 /* Merge modes, basically do special stuff to mode with params */
1169 for (std::string::iterator x = params[2].begin(); x != params[2].end(); x++)
1182 /* We only care about whats being set,
1183 * not whats being unset
1185 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1187 if ((mh) && (mh->GetNumParams(adding) > 0) && (!mh->IsListMode()))
1189 /* We only want to do special things to
1190 * modes with parameters, we are going to rewrite
1194 adding ? cur_change = '+' : cur_change = '-';
1196 ret = mh->ModeSet(smode ? NULL : who, dst, chan, params[paramptr]);
1198 /* The mode is set here, check which we should keep */
1201 bool which_to_keep = mh->CheckTimeStamp(TS, ourTS, params[paramptr], ret.second, chan);
1203 if (which_to_keep == true)
1205 /* Keep ours, bounce theirs:
1206 * Send back ours to them and
1207 * drop their mode changs
1209 adding ? cur_change = '+' : cur_change = '-';
1210 if (cur_change != old_bounce_change)
1211 to_bounce += cur_change;
1213 old_bounce_change = cur_change;
1215 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1216 params_to_bounce.append(" ").append(ret.second);
1220 /* Keep theirs: Accept their mode change,
1223 adding ? cur_change = '+' : cur_change = '-';
1224 if (cur_change != old_change)
1225 to_keep += cur_change;
1227 old_change = cur_change;
1229 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1230 params_to_keep.push_back(params[paramptr]);
1235 /* Mode isnt set here, we want it */
1236 adding ? cur_change = '+' : cur_change = '-';
1237 if (cur_change != old_change)
1238 to_keep += cur_change;
1240 old_change = cur_change;
1242 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1243 params_to_keep.push_back(params[paramptr]);
1250 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1254 adding ? cur_change = '+' : cur_change = '-';
1256 /* Just keep this, safe to merge with no checks
1257 * it has no parameters
1260 if (cur_change != old_change)
1261 to_keep += cur_change;
1263 old_change = cur_change;
1265 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1267 Instance->Log(DEBUG,"Mode removal %d %d",adding, mh->GetNumParams(adding));
1268 params_to_keep.push_back(params[paramptr++]);
1275 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1279 /* Taking a mode away */
1280 adding ? cur_change = '+' : cur_change = '-';
1282 if (cur_change != old_change)
1283 to_keep += cur_change;
1285 old_change = cur_change;
1287 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1288 params_to_keep.push_back(params[paramptr++]);
1295 if (to_bounce.length())
1297 std::deque<std::string> newparams;
1298 newparams.push_back(params[0]);
1299 newparams.push_back(ConvToStr(ourTS));
1300 newparams.push_back(to_bounce+params_to_bounce);
1301 Instance->Log(DEBUG,"BOUNCE BACK: %s",(to_bounce+params_to_bounce).c_str());
1302 DoOneToOne(this->Instance->Config->ServerName,"FMODE",newparams,sourceserv);
1305 if (to_keep.length())
1309 modelist[0] = params[0].c_str();
1310 modelist[1] = to_keep.c_str();
1312 if (params_to_keep.size() > 1)
1314 for (q = 0; (q < params_to_keep.size()) && (q < 64); q++)
1316 Instance->Log(DEBUG,"KEEP Item %d of %d: %s", q, params_to_keep.size(), params_to_keep[q].c_str());
1317 modelist[n++] = params_to_keep[q].c_str();
1323 Instance->Log(DEBUG,"Send mode");
1324 this->Instance->SendMode(modelist, n+2, who);
1328 Instance->Log(DEBUG,"Send mode client");
1329 this->Instance->CallCommandHandler("MODE", modelist, n+2, who);
1332 /* HOT POTATO! PASS IT ON! */
1333 DoOneToAllButSender(source,"FMODE",params,sourceserv);
1337 /* U-lined servers always win regardless of their TS */
1338 if ((TS > ourTS) && (!this->Instance->ULine(source.c_str())))
1340 /* Bounce the mode back to its sender.* We use our lower TS, so the other end
1341 * SHOULD accept it, if its clock is right.
1343 * NOTE: We should check that we arent bouncing anything thats already set at this end.
1344 * If we are, bounce +ourmode to 'reinforce' it. This prevents desyncs.
1345 * e.g. They send +l 50, we have +l 10 set. rather than bounce -l 50, we bounce +l 10.
1347 * Thanks to jilles for pointing out this one-hell-of-an-issue before i even finished
1348 * writing the code. It took me a while to come up with this solution.
1350 * XXX: BE SURE YOU UNDERSTAND THIS CODE FULLY BEFORE YOU MESS WITH IT.
1353 std::deque<std::string> newparams; /* New parameter list we send back */
1354 newparams.push_back(params[0]); /* Target, user or channel */
1355 newparams.push_back(ConvToStr(ourTS)); /* Timestamp value of the target */
1356 newparams.push_back(""); /* This contains the mode string. For now
1357 * it's empty, we fill it below.
1360 /* Intelligent mode bouncing. Don't just invert, reinforce any modes which are already
1361 * set to avoid a desync here.
1363 std::string modebounce = "";
1366 ModeHandler* mh = NULL;
1367 char cur_change = 1;
1368 char old_change = 0;
1369 for (std::string::iterator x = params[2].begin(); x != params[2].end(); x++)
1371 /* Iterate over all mode chars in the sent set */
1374 /* Adding or subtracting modes? */
1382 /* Find the mode handler for this mode */
1383 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1385 /* Got a mode handler?
1386 * This also prevents us bouncing modes we have no handler for.
1393 /* Does the mode require a parameter right now?
1394 * If it does, fetch it if we can
1396 if ((mh->GetNumParams(adding) > 0) && (t < params.size()))
1399 /* Call the ModeSet method to determine if its set with the
1400 * given parameter here or not.
1402 ret = mh->ModeSet(smode ? NULL : who, dst, chan, p);
1404 /* XXX: Really. Dont ask.
1405 * Determine from if its set combined with what the current
1406 * 'state' is (adding or not) as to wether we should 'invert'
1407 * or 'reinforce' the mode change
1409 (!ret.first ? (adding ? cur_change = '-' : cur_change = '+') : (!adding ? cur_change = '-' : cur_change = '+'));
1411 /* Quickly determine if we have 'flipped' from + to -,
1412 * or - to +, to prevent unneccessary +/- chars in the
1413 * output string that waste bandwidth
1415 if (cur_change != old_change)
1416 modebounce += cur_change;
1417 old_change = cur_change;
1419 /* Add the mode character to the output string */
1420 modebounce += mh->GetModeChar();
1422 /* We got a parameter back from ModeHandler::ModeSet,
1423 * are we supposed to be sending one out right now?
1425 if (ret.second.length())
1427 if (mh->GetNumParams(cur_change == '+') > 0)
1428 /* Yes we're supposed to be sending out
1429 * the parameter. Make sure it goes
1431 newparams.push_back(ret.second);
1439 /* Update the parameters for FMODE with the new 'bounced' string */
1440 newparams[2] = modebounce;
1441 /* Only send it back the way it came, no need to send it anywhere else */
1442 DoOneToOne(this->Instance->Config->ServerName,"FMODE",newparams,sourceserv);
1443 Instance->Log(DEBUG,"FMODE bounced intelligently, our TS less than theirs and the other server is NOT a uline.");
1447 Instance->Log(DEBUG,"Allow modes, TS lower for sender");
1448 /* The server was ulined, but something iffy is up with the TS.
1449 * Sound the alarm bells!
1451 if ((this->Instance->ULine(sourceserv.c_str())) && (TS > ourTS))
1453 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());
1455 /* Allow the mode, route it to either server or user command handling */
1457 this->Instance->SendMode(modelist,n,who);
1459 this->Instance->CallCommandHandler("MODE", modelist, n, who);
1461 /* HOT POTATO! PASS IT ON! */
1462 DoOneToAllButSender(source,"FMODE",params,sourceserv);
1464 /* Are we supposed to free the userrec? */
1471 /* FTOPIC command */
1472 bool ForceTopic(std::string source, std::deque<std::string> ¶ms)
1474 if (params.size() != 4)
1476 time_t ts = atoi(params[1].c_str());
1477 std::string nsource = source;
1479 chanrec* c = this->Instance->FindChan(params[0]);
1482 if ((ts >= c->topicset) || (!*c->topic))
1484 std::string oldtopic = c->topic;
1485 strlcpy(c->topic,params[3].c_str(),MAXTOPIC);
1486 strlcpy(c->setby,params[2].c_str(),NICKMAX-1);
1488 /* if the topic text is the same as the current topic,
1489 * dont bother to send the TOPIC command out, just silently
1490 * update the set time and set nick.
1492 if (oldtopic != params[3])
1494 userrec* user = this->Instance->FindNick(source);
1497 c->WriteChannelWithServ(source.c_str(), "TOPIC %s :%s", c->name, c->topic);
1501 c->WriteChannel(user, "TOPIC %s :%s", c->name, c->topic);
1502 nsource = user->server;
1504 /* all done, send it on its way */
1505 params[3] = ":" + params[3];
1506 DoOneToAllButSender(source,"FTOPIC",params,nsource);
1515 /* FJOIN, similar to unreal SJOIN */
1516 bool ForceJoin(std::string source, std::deque<std::string> ¶ms)
1518 if (params.size() < 3)
1522 char modestring[MAXBUF];
1523 char* mode_users[127];
1524 memset(&mode_users,0,sizeof(mode_users));
1525 mode_users[0] = first;
1526 mode_users[1] = modestring;
1527 strcpy(modestring,"+");
1528 unsigned int modectr = 2;
1530 userrec* who = NULL;
1531 std::string channel = params[0];
1532 time_t TS = atoi(params[1].c_str());
1535 chanrec* chan = this->Instance->FindChan(channel);
1540 strlcpy(mode_users[0],channel.c_str(),MAXBUF);
1542 /* default is a high value, which if we dont have this
1543 * channel will let the other side apply their modes.
1545 time_t ourTS = time(NULL)+600;
1546 chanrec* us = this->Instance->FindChan(channel);
1552 Instance->Log(DEBUG,"FJOIN detected, our TS=%lu, their TS=%lu",ourTS,TS);
1554 irc::tokenstream users(params[2]);
1555 std::string item = "*";
1557 /* do this first, so our mode reversals are correctly received by other servers
1558 * if there is a TS collision.
1560 params[2] = ":" + params[2];
1561 DoOneToAllButSender(source,"FJOIN",params,source);
1564 item = users.GetToken();
1565 /* process one user at a time, applying modes. */
1566 char* usr = (char*)item.c_str();
1567 /* Safety check just to make sure someones not sent us an FJOIN full of spaces
1568 * (is this even possible?) */
1571 char* permissions = usr;
1573 while ((*permissions) && (*permissions != ','))
1575 ModeHandler* mh = Instance->Modes->FindPrefix(*permissions);
1579 charlcat(modestring,mh->GetModeChar(),MAXBUF);
1583 this->Instance->WriteOpers("ERROR: We received a user with an unknown prefix '%c'. Closed connection to avoid a desync.",mh->GetPrefix());
1584 this->WriteLine(std::string("ERROR :Invalid prefix '")+mh->GetModeChar()+"' in FJOIN");
1592 /* Did they get any modes? How many times? */
1593 for (int k = 0; k < ntimes; k++)
1594 mode_users[modectr++] = strdup(usr);
1596 who = this->Instance->FindNick(usr);
1599 chanrec::JoinUser(this->Instance, who, channel.c_str(), true, key);
1600 if (modectr >= (MAXMODES-1))
1602 /* theres a mode for this user. push them onto the mode queue, and flush it
1603 * if there are more than MAXMODES to go.
1605 if ((ourTS >= TS) || (this->Instance->ULine(who->server)))
1607 /* We also always let u-lined clients win, no matter what the TS value */
1608 Instance->Log(DEBUG,"Our our channel newer than theirs, accepting their modes");
1609 this->Instance->SendMode((const char**)mode_users,modectr,who);
1612 Instance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",us->name,ourTS,TS);
1619 Instance->Log(DEBUG,"Their channel newer than ours, bouncing their modes");
1620 /* bouncy bouncy! */
1621 std::deque<std::string> params;
1622 /* modes are now being UNSET... */
1623 *mode_users[1] = '-';
1624 for (unsigned int x = 0; x < modectr; x++)
1628 params.push_back(ConvToStr(us->age));
1630 params.push_back(mode_users[x]);
1633 // tell everyone to bounce the modes. bad modes, bad!
1634 DoOneToMany(this->Instance->Config->ServerName,"FMODE",params);
1636 strcpy(mode_users[1],"+");
1637 for (unsigned int f = 2; f < modectr; f++)
1638 free(mode_users[f]);
1644 Instance->Log(SPARSE,"Warning! Invalid user %s in FJOIN to channel %s IGNORED", who->nick, channel.c_str());
1649 /* there werent enough modes built up to flush it during FJOIN,
1650 * or, there are a number left over. flush them out.
1652 if ((modectr > 2) && (who) && (us))
1656 Instance->Log(DEBUG,"Our our channel newer than theirs, accepting their modes");
1657 this->Instance->SendMode((const char**)mode_users,modectr,who);
1660 Instance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",us->name,ourTS,TS);
1667 Instance->Log(DEBUG,"Their channel newer than ours, bouncing their modes");
1668 std::deque<std::string> params;
1669 *mode_users[1] = '-';
1670 for (unsigned int x = 0; x < modectr; x++)
1674 params.push_back(ConvToStr(us->age));
1676 params.push_back(mode_users[x]);
1678 DoOneToMany(this->Instance->Config->ServerName,"FMODE",params);
1681 for (unsigned int f = 2; f < modectr; f++)
1682 free(mode_users[f]);
1688 bool IntroduceClient(std::string source, std::deque<std::string> ¶ms)
1690 if (params.size() < 8)
1692 if (params.size() > 8)
1694 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+params[1]+" :Invalid client introduction ("+params[1]+"?)");
1697 // NICK age nick host dhost ident +modes ip :gecos
1699 time_t age = atoi(params[0].c_str());
1701 /* This used to have a pretty craq'y loop doing the same thing,
1702 * now we just let the STL do the hard work (more efficiently)
1704 std::string::size_type pos_after_plus = params[5].find_first_not_of('+');
1705 if (pos_after_plus != std::string::npos)
1706 params[5] = params[5].substr(pos_after_plus);
1708 const char* tempnick = params[1].c_str();
1709 Instance->Log(DEBUG,"Introduce client %s!%s@%s",tempnick,params[4].c_str(),params[2].c_str());
1711 user_hash::iterator iter = this->Instance->clientlist.find(tempnick);
1713 if (iter != this->Instance->clientlist.end())
1716 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);
1717 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+tempnick+" :Nickname collision");
1721 userrec* _new = new userrec(this->Instance);
1722 this->Instance->clientlist[tempnick] = _new;
1723 _new->SetFd(FD_MAGIC_NUMBER);
1724 strlcpy(_new->nick, tempnick,NICKMAX-1);
1725 strlcpy(_new->host, params[2].c_str(),63);
1726 strlcpy(_new->dhost, params[3].c_str(),63);
1727 _new->server = this->Instance->FindServerNamePtr(source.c_str());
1728 strlcpy(_new->ident, params[4].c_str(),IDENTMAX);
1729 strlcpy(_new->fullname, params[7].c_str(),MAXGECOS);
1730 _new->registered = REG_ALL;
1733 for (std::string::iterator v = params[5].begin(); v != params[5].end(); v++)
1734 _new->modes[(*v)-65] = 1;
1736 #ifdef SUPPORT_IP6LINKS
1737 if (params[6].find_first_of(":") != std::string::npos)
1738 _new->SetSockAddr(AF_INET6, params[6].c_str(), 0);
1741 _new->SetSockAddr(AF_INET, params[6].c_str(), 0);
1743 this->Instance->SNO->WriteToSnoMask('C',"Client connecting at %s: %s!%s@%s [%s]",_new->server,_new->nick,_new->ident,_new->host, _new->GetIPString());
1745 params[7] = ":" + params[7];
1746 DoOneToAllButSender(source,"NICK",params,source);
1748 // Increment the Source Servers User Count..
1749 TreeServer* SourceServer = FindServer(source);
1752 Instance->Log(DEBUG,"Found source server of %s",_new->nick);
1753 SourceServer->AddUserCount();
1759 /* Send one or more FJOINs for a channel of users.
1760 * If the length of a single line is more than 480-NICKMAX
1761 * in length, it is split over multiple lines.
1763 void SendFJoins(TreeServer* Current, chanrec* c)
1765 Instance->Log(DEBUG,"Sending FJOINs to other server for %s",c->name);
1767 std::string individual_halfops = std::string(":")+this->Instance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age);
1769 size_t dlen, curlen;
1770 dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,c->name,(unsigned long)c->age);
1772 char* ptr = list + dlen;
1774 CUList *ulist = c->GetUsers();
1775 std::vector<userrec*> specific_halfop;
1776 std::vector<userrec*> specific_voice;
1777 std::string modes = "";
1778 std::string params = "";
1780 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1782 // The first parameter gets a : before it
1783 size_t ptrlen = snprintf(ptr, MAXBUF, " %s%s,%s", !numusers ? ":" : "", c->GetAllPrefixChars(i->second), i->second->nick);
1790 if (curlen > (480-NICKMAX))
1792 this->WriteLine(list);
1793 dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,c->name,(unsigned long)c->age);
1801 this->WriteLine(list);
1803 for (BanList::iterator b = c->bans.begin(); b != c->bans.end(); b++)
1806 params.append(b->data).append(" ");
1808 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age)+" +"+c->ChanModes(true)+modes+" "+params);
1811 /* Send G, Q, Z and E lines */
1812 void SendXLines(TreeServer* Current)
1815 std::string n = this->Instance->Config->ServerName;
1816 const char* sn = n.c_str();
1818 /* Yes, these arent too nice looking, but they get the job done */
1819 for (std::vector<ZLine>::iterator i = Instance->XLines->zlines.begin(); i != Instance->XLines->zlines.end(); i++, iterations++)
1821 snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s",sn,i->ipaddr,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1822 this->WriteLine(data);
1824 for (std::vector<QLine>::iterator i = Instance->XLines->qlines.begin(); i != Instance->XLines->qlines.end(); i++, iterations++)
1826 snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s",sn,i->nick,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1827 this->WriteLine(data);
1829 for (std::vector<GLine>::iterator i = Instance->XLines->glines.begin(); i != Instance->XLines->glines.end(); i++, iterations++)
1831 snprintf(data,MAXBUF,":%s ADDLINE G %s %s %lu %lu :%s",sn,i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1832 this->WriteLine(data);
1834 for (std::vector<ELine>::iterator i = Instance->XLines->elines.begin(); i != Instance->XLines->elines.end(); i++, iterations++)
1836 snprintf(data,MAXBUF,":%s ADDLINE E %s %s %lu %lu :%s",sn,i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1837 this->WriteLine(data);
1839 for (std::vector<ZLine>::iterator i = Instance->XLines->pzlines.begin(); i != Instance->XLines->pzlines.end(); i++, iterations++)
1841 snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s",sn,i->ipaddr,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1842 this->WriteLine(data);
1844 for (std::vector<QLine>::iterator i = Instance->XLines->pqlines.begin(); i != Instance->XLines->pqlines.end(); i++, iterations++)
1846 snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s",sn,i->nick,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1847 this->WriteLine(data);
1849 for (std::vector<GLine>::iterator i = Instance->XLines->pglines.begin(); i != Instance->XLines->pglines.end(); i++, iterations++)
1851 snprintf(data,MAXBUF,":%s ADDLINE G %s %s %lu %lu :%s",sn,i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1852 this->WriteLine(data);
1854 for (std::vector<ELine>::iterator i = Instance->XLines->pelines.begin(); i != Instance->XLines->pelines.end(); i++, iterations++)
1856 snprintf(data,MAXBUF,":%s ADDLINE E %s %s %lu %lu :%s",sn,i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1857 this->WriteLine(data);
1861 /* Send channel modes and topics */
1862 void SendChannelModes(TreeServer* Current)
1865 std::deque<std::string> list;
1867 std::string n = this->Instance->Config->ServerName;
1868 const char* sn = n.c_str();
1869 for (chan_hash::iterator c = this->Instance->chanlist.begin(); c != this->Instance->chanlist.end(); c++, iterations++)
1871 SendFJoins(Current, c->second);
1872 if (*c->second->topic)
1874 snprintf(data,MAXBUF,":%s FTOPIC %s %lu %s :%s",sn,c->second->name,(unsigned long)c->second->topicset,c->second->setby,c->second->topic);
1875 this->WriteLine(data);
1877 FOREACH_MOD_I(this->Instance,I_OnSyncChannel,OnSyncChannel(c->second,(Module*)TreeProtocolModule,(void*)this));
1879 c->second->GetExtList(list);
1880 for (unsigned int j = 0; j < list.size(); j++)
1882 FOREACH_MOD_I(this->Instance,I_OnSyncChannelMetaData,OnSyncChannelMetaData(c->second,(Module*)TreeProtocolModule,(void*)this,list[j]));
1887 /* send all users and their oper state/modes */
1888 void SendUsers(TreeServer* Current)
1891 std::deque<std::string> list;
1893 for (user_hash::iterator u = this->Instance->clientlist.begin(); u != this->Instance->clientlist.end(); u++, iterations++)
1895 if (u->second->registered == REG_ALL)
1897 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);
1898 this->WriteLine(data);
1899 if (*u->second->oper)
1901 this->WriteLine(":"+std::string(u->second->nick)+" OPERTYPE "+std::string(u->second->oper));
1903 if (*u->second->awaymsg)
1905 this->WriteLine(":"+std::string(u->second->nick)+" AWAY :"+std::string(u->second->awaymsg));
1907 FOREACH_MOD_I(this->Instance,I_OnSyncUser,OnSyncUser(u->second,(Module*)TreeProtocolModule,(void*)this));
1909 u->second->GetExtList(list);
1910 for (unsigned int j = 0; j < list.size(); j++)
1912 FOREACH_MOD_I(this->Instance,I_OnSyncUserMetaData,OnSyncUserMetaData(u->second,(Module*)TreeProtocolModule,(void*)this,list[j]));
1918 /* This function is called when we want to send a netburst to a local
1919 * server. There is a set order we must do this, because for example
1920 * users require their servers to exist, and channels require their
1921 * users to exist. You get the idea.
1923 void DoBurst(TreeServer* s)
1925 std::string burst = "BURST "+ConvToStr(time(NULL));
1926 std::string endburst = "ENDBURST";
1927 // Because by the end of the netburst, it could be gone!
1928 std::string name = s->GetName();
1929 this->Instance->SNO->WriteToSnoMask('l',"Bursting to \2"+name+"\2.");
1930 this->WriteLine(burst);
1931 /* send our version string */
1932 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" VERSION :"+this->Instance->GetVersionString());
1933 /* Send server tree */
1934 this->SendServers(TreeRoot,s,1);
1935 /* Send users and their oper status */
1937 /* Send everything else (channel modes, xlines etc) */
1938 this->SendChannelModes(s);
1939 this->SendXLines(s);
1940 FOREACH_MOD_I(this->Instance,I_OnSyncOtherMetaData,OnSyncOtherMetaData((Module*)TreeProtocolModule,(void*)this));
1941 this->WriteLine(endburst);
1942 this->Instance->SNO->WriteToSnoMask('l',"Finished bursting to \2"+name+"\2.");
1945 /* This function is called when we receive data from a remote
1946 * server. We buffer the data in a std::string (it doesnt stay
1947 * there for long), reading using InspSocket::Read() which can
1948 * read up to 16 kilobytes in one operation.
1950 * IF THIS FUNCTION RETURNS FALSE, THE CORE CLOSES AND DELETES
1951 * THE SOCKET OBJECT FOR US.
1953 virtual bool OnDataReady()
1955 char* data = this->Read();
1956 /* Check that the data read is a valid pointer and it has some content */
1959 this->in_buffer.append(data);
1960 /* While there is at least one new line in the buffer,
1961 * do something useful (we hope!) with it.
1963 while (in_buffer.find("\n") != std::string::npos)
1965 std::string ret = in_buffer.substr(0,in_buffer.find("\n")-1);
1966 in_buffer = in_buffer.substr(in_buffer.find("\n")+1,in_buffer.length()-in_buffer.find("\n"));
1967 if (ret.find("\r") != std::string::npos)
1968 ret = in_buffer.substr(0,in_buffer.find("\r")-1);
1969 /* Process this one, abort if it
1970 * didnt return true.
1976 memset(result,0,1024);
1978 Instance->Log(DEBUG,"Original string '%s'",ret.c_str());
1979 /* ERROR + CAPAB is still allowed unencryped */
1980 if ((ret.substr(0,7) != "ERROR :") && (ret.substr(0,6) != "CAPAB "))
1982 int nbytes = from64tobits(out, ret.c_str(), 1024);
1983 if ((nbytes > 0) && (nbytes < 1024))
1985 Instance->Log(DEBUG,"m_spanningtree: decrypt %d bytes",nbytes);
1986 ctx_in->Decrypt(out, result, nbytes, 0);
1987 for (int t = 0; t < nbytes; t++)
1988 if (result[t] == '\7') result[t] = 0;
1993 if (!this->ProcessLine(ret))
1995 Instance->Log(DEBUG,"ProcessLine says no!");
2001 /* EAGAIN returns an empty but non-NULL string, so this
2002 * evaluates to TRUE for EAGAIN but to FALSE for EOF.
2004 return (data && !*data);
2007 int WriteLine(std::string line)
2009 Instance->Log(DEBUG,"OUT: %s",line.c_str());
2013 char result64[10240];
2014 if (this->keylength)
2016 // pad it to the key length
2017 int n = this->keylength - (line.length() % this->keylength);
2020 Instance->Log(DEBUG,"Append %d chars to line to make it %d long from %d, key length %d",n,n+line.length(),line.length(),this->keylength);
2021 line.append(n,'\7');
2024 unsigned int ll = line.length();
2025 ctx_out->Encrypt(line.c_str(), result, ll, 0);
2026 to64frombits((unsigned char*)result64,(unsigned char*)result,ll);
2028 //int from64tobits(char *out, const char *in, int maxlen);
2030 return this->Write(line + "\r\n");
2033 /* Handle ERROR command */
2034 bool Error(std::deque<std::string> ¶ms)
2036 if (params.size() < 1)
2038 this->Instance->SNO->WriteToSnoMask('l',"ERROR from %s: %s",(InboundServerName != "" ? InboundServerName.c_str() : myhost.c_str()),params[0].c_str());
2039 /* we will return false to cause the socket to close. */
2043 /* remote MOTD. leet, huh? */
2044 bool Motd(std::string prefix, std::deque<std::string> ¶ms)
2046 if (params.size() > 0)
2048 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
2050 /* It's for our server */
2051 string_list results;
2052 userrec* source = this->Instance->FindNick(prefix);
2056 std::deque<std::string> par;
2057 par.push_back(prefix);
2060 if (!Instance->Config->MOTD.size())
2062 par[1] = std::string("::")+Instance->Config->ServerName+" 422 "+source->nick+" :Message of the day file is missing.";
2063 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2067 par[1] = std::string("::")+Instance->Config->ServerName+" 375 "+source->nick+" :"+Instance->Config->ServerName+" message of the day";
2068 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2070 for (unsigned int i = 0; i < Instance->Config->MOTD.size(); i++)
2072 par[1] = std::string("::")+Instance->Config->ServerName+" 372 "+source->nick+" :- "+Instance->Config->MOTD[i];
2073 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2076 par[1] = std::string("::")+Instance->Config->ServerName+" 376 "+source->nick+" End of message of the day.";
2077 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2083 userrec* source = this->Instance->FindNick(prefix);
2085 DoOneToOne(prefix, "MOTD", params, params[0]);
2091 /* remote ADMIN. leet, huh? */
2092 bool Admin(std::string prefix, std::deque<std::string> ¶ms)
2094 if (params.size() > 0)
2096 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
2098 /* It's for our server */
2099 string_list results;
2100 userrec* source = this->Instance->FindNick(prefix);
2104 std::deque<std::string> par;
2105 par.push_back(prefix);
2108 par[1] = std::string("::")+Instance->Config->ServerName+" 256 "+source->nick+" :Administrative info for "+Instance->Config->ServerName;
2109 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2111 par[1] = std::string("::")+Instance->Config->ServerName+" 257 "+source->nick+" :Name - "+Instance->Config->AdminName;
2112 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2114 par[1] = std::string("::")+Instance->Config->ServerName+" 258 "+source->nick+" :Nickname - "+Instance->Config->AdminNick;
2115 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2117 par[1] = std::string("::")+Instance->Config->ServerName+" 258 "+source->nick+" :E-Mail - "+Instance->Config->AdminEmail;
2118 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2124 userrec* source = this->Instance->FindNick(prefix);
2126 DoOneToOne(prefix, "ADMIN", params, params[0]);
2132 bool Stats(std::string prefix, std::deque<std::string> ¶ms)
2134 /* Get the reply to a STATS query if it matches this servername,
2135 * and send it back as a load of PUSH queries
2137 if (params.size() > 1)
2139 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[1]))
2141 /* It's for our server */
2142 string_list results;
2143 userrec* source = this->Instance->FindNick(prefix);
2146 std::deque<std::string> par;
2147 par.push_back(prefix);
2149 DoStats(this->Instance, *(params[0].c_str()), source, results);
2150 for (size_t i = 0; i < results.size(); i++)
2152 par[1] = "::" + results[i];
2153 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2160 userrec* source = this->Instance->FindNick(prefix);
2162 DoOneToOne(prefix, "STATS", params, params[1]);
2169 /* Because the core won't let users or even SERVERS set +o,
2170 * we use the OPERTYPE command to do this.
2172 bool OperType(std::string prefix, std::deque<std::string> ¶ms)
2174 if (params.size() != 1)
2176 Instance->Log(DEBUG,"Received invalid oper type from %s",prefix.c_str());
2179 std::string opertype = params[0];
2180 userrec* u = this->Instance->FindNick(prefix);
2183 u->modes[UM_OPERATOR] = 1;
2184 strlcpy(u->oper,opertype.c_str(),NICKMAX-1);
2185 DoOneToAllButSender(u->nick,"OPERTYPE",params,u->server);
2190 /* Because Andy insists that services-compatible servers must
2191 * implement SVSNICK and SVSJOIN, that's exactly what we do :p
2193 bool ForceNick(std::string prefix, std::deque<std::string> ¶ms)
2195 if (params.size() < 3)
2198 userrec* u = this->Instance->FindNick(params[0]);
2202 DoOneToAllButSender(prefix,"SVSNICK",params,prefix);
2205 std::deque<std::string> par;
2206 par.push_back(params[1]);
2207 /* This is not required as one is sent in OnUserPostNick below
2209 //DoOneToMany(u->nick,"NICK",par);
2210 if (!u->ForceNickChange(params[1].c_str()))
2212 userrec::QuitUser(this->Instance, u, "Nickname collision");
2215 u->age = atoi(params[2].c_str());
2221 bool ServiceJoin(std::string prefix, std::deque<std::string> ¶ms)
2223 if (params.size() < 2)
2226 userrec* u = this->Instance->FindNick(params[0]);
2230 chanrec::JoinUser(this->Instance, u, params[1].c_str(), false);
2231 DoOneToAllButSender(prefix,"SVSJOIN",params,prefix);
2236 bool RemoteRehash(std::string prefix, std::deque<std::string> ¶ms)
2238 if (params.size() < 1)
2241 std::string servermask = params[0];
2243 if (this->Instance->MatchText(this->Instance->Config->ServerName,servermask))
2245 this->Instance->SNO->WriteToSnoMask('l',"Remote rehash initiated from server \002"+prefix+"\002.");
2246 this->Instance->RehashServer();
2247 ReadConfiguration(false);
2249 DoOneToAllButSender(prefix,"REHASH",params,prefix);
2253 bool RemoteKill(std::string prefix, std::deque<std::string> ¶ms)
2255 if (params.size() != 2)
2258 std::string nick = params[0];
2259 userrec* u = this->Instance->FindNick(prefix);
2260 userrec* who = this->Instance->FindNick(nick);
2264 /* Prepend kill source, if we don't have one */
2265 std::string sourceserv = prefix;
2268 sourceserv = u->server;
2270 if (*(params[1].c_str()) != '[')
2272 params[1] = "[" + sourceserv + "] Killed (" + params[1] +")";
2274 std::string reason = params[1];
2275 params[1] = ":" + params[1];
2276 DoOneToAllButSender(prefix,"KILL",params,sourceserv);
2277 who->Write(":%s KILL %s :%s (%s)", sourceserv.c_str(), who->nick, sourceserv.c_str(), reason.c_str());
2278 userrec::QuitUser(this->Instance,who,reason);
2283 bool LocalPong(std::string prefix, std::deque<std::string> ¶ms)
2285 if (params.size() < 1)
2288 if (params.size() == 1)
2290 TreeServer* ServerSource = FindServer(prefix);
2293 ServerSource->SetPingFlag();
2298 std::string forwardto = params[1];
2299 if (forwardto == this->Instance->Config->ServerName)
2302 * this is a PONG for us
2303 * if the prefix is a user, check theyre local, and if they are,
2304 * dump the PONG reply back to their fd. If its a server, do nowt.
2305 * Services might want to send these s->s, but we dont need to yet.
2307 userrec* u = this->Instance->FindNick(prefix);
2311 u->WriteServ("PONG %s %s",params[0].c_str(),params[1].c_str());
2316 // not for us, pass it on :)
2317 DoOneToOne(prefix,"PONG",params,forwardto);
2324 bool MetaData(std::string prefix, std::deque<std::string> ¶ms)
2326 if (params.size() < 3)
2329 TreeServer* ServerSource = FindServer(prefix);
2333 if (params[0] == "*")
2335 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_OTHER,NULL,params[1],params[2]));
2337 else if (*(params[0].c_str()) == '#')
2339 chanrec* c = this->Instance->FindChan(params[0]);
2342 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]));
2345 else if (*(params[0].c_str()) != '#')
2347 userrec* u = this->Instance->FindNick(params[0]);
2350 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2]));
2355 params[2] = ":" + params[2];
2356 DoOneToAllButSender(prefix,"METADATA",params,prefix);
2360 bool ServerVersion(std::string prefix, std::deque<std::string> ¶ms)
2362 if (params.size() < 1)
2365 TreeServer* ServerSource = FindServer(prefix);
2369 ServerSource->SetVersion(params[0]);
2371 params[0] = ":" + params[0];
2372 DoOneToAllButSender(prefix,"VERSION",params,prefix);
2376 bool ChangeHost(std::string prefix, std::deque<std::string> ¶ms)
2378 if (params.size() < 1)
2381 userrec* u = this->Instance->FindNick(prefix);
2385 u->ChangeDisplayedHost(params[0].c_str());
2386 DoOneToAllButSender(prefix,"FHOST",params,u->server);
2391 bool AddLine(std::string prefix, std::deque<std::string> ¶ms)
2393 if (params.size() < 6)
2396 bool propogate = false;
2398 switch (*(params[0].c_str()))
2401 propogate = Instance->XLines->add_zline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2402 Instance->XLines->zline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2405 propogate = Instance->XLines->add_qline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2406 Instance->XLines->qline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2409 propogate = Instance->XLines->add_eline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2410 Instance->XLines->eline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2413 propogate = Instance->XLines->add_gline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2414 Instance->XLines->gline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2417 propogate = Instance->XLines->add_kline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2420 /* Just in case... */
2421 this->Instance->SNO->WriteToSnoMask('x',"\2WARNING\2: Invalid xline type '"+params[0]+"' sent by server "+prefix+", ignored!");
2426 /* Send it on its way */
2429 if (atoi(params[4].c_str()))
2431 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());
2435 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());
2437 params[5] = ":" + params[5];
2438 DoOneToAllButSender(prefix,"ADDLINE",params,prefix);
2440 if (!this->bursting)
2442 Instance->Log(DEBUG,"Applying lines...");
2443 Instance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
2448 bool ChangeName(std::string prefix, std::deque<std::string> ¶ms)
2450 if (params.size() < 1)
2453 userrec* u = this->Instance->FindNick(prefix);
2457 u->ChangeName(params[0].c_str());
2458 params[0] = ":" + params[0];
2459 DoOneToAllButSender(prefix,"FNAME",params,u->server);
2464 bool Whois(std::string prefix, std::deque<std::string> ¶ms)
2466 if (params.size() < 1)
2469 Instance->Log(DEBUG,"In IDLE command");
2470 userrec* u = this->Instance->FindNick(prefix);
2474 Instance->Log(DEBUG,"USER EXISTS: %s",u->nick);
2475 // an incoming request
2476 if (params.size() == 1)
2478 userrec* x = this->Instance->FindNick(params[0]);
2479 if ((x) && (IS_LOCAL(x)))
2481 userrec* x = this->Instance->FindNick(params[0]);
2482 char signon[MAXBUF];
2485 snprintf(signon,MAXBUF,"%lu",(unsigned long)x->signon);
2486 snprintf(idle,MAXBUF,"%lu",(unsigned long)abs((x->idle_lastmsg)-time(NULL)));
2487 std::deque<std::string> par;
2488 par.push_back(prefix);
2489 par.push_back(signon);
2490 par.push_back(idle);
2491 // ours, we're done, pass it BACK
2492 DoOneToOne(params[0],"IDLE",par,u->server);
2496 // not ours pass it on
2497 DoOneToOne(prefix,"IDLE",params,x->server);
2500 else if (params.size() == 3)
2502 std::string who_did_the_whois = params[0];
2503 userrec* who_to_send_to = this->Instance->FindNick(who_did_the_whois);
2504 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
2506 // an incoming reply to a whois we sent out
2507 std::string nick_whoised = prefix;
2508 unsigned long signon = atoi(params[1].c_str());
2509 unsigned long idle = atoi(params[2].c_str());
2510 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
2511 do_whois(this->Instance,who_to_send_to,u,signon,idle,nick_whoised.c_str());
2515 // not ours, pass it on
2516 DoOneToOne(prefix,"IDLE",params,who_to_send_to->server);
2523 bool Push(std::string prefix, std::deque<std::string> ¶ms)
2525 if (params.size() < 2)
2528 userrec* u = this->Instance->FindNick(params[0]);
2535 u->Write(params[1]);
2539 // continue the raw onwards
2540 params[1] = ":" + params[1];
2541 DoOneToOne(prefix,"PUSH",params,u->server);
2546 bool Time(std::string prefix, std::deque<std::string> ¶ms)
2548 // :source.server TIME remote.server sendernick
2549 // :remote.server TIME source.server sendernick TS
2550 if (params.size() == 2)
2552 // someone querying our time?
2553 if (this->Instance->Config->ServerName == params[0])
2555 userrec* u = this->Instance->FindNick(params[1]);
2559 snprintf(curtime,256,"%lu",(unsigned long)time(NULL));
2560 params.push_back(curtime);
2562 DoOneToOne(this->Instance->Config->ServerName,"TIME",params,params[0]);
2567 // not us, pass it on
2568 userrec* u = this->Instance->FindNick(params[1]);
2570 DoOneToOne(prefix,"TIME",params,params[0]);
2573 else if (params.size() == 3)
2575 // a response to a previous TIME
2576 userrec* u = this->Instance->FindNick(params[1]);
2577 if ((u) && (IS_LOCAL(u)))
2579 time_t rawtime = atol(params[2].c_str());
2580 struct tm * timeinfo;
2581 timeinfo = localtime(&rawtime);
2583 snprintf(tms,26,"%s",asctime(timeinfo));
2585 u->WriteServ("391 %s %s :%s",u->nick,prefix.c_str(),tms);
2590 DoOneToOne(prefix,"TIME",params,u->server);
2596 bool LocalPing(std::string prefix, std::deque<std::string> ¶ms)
2598 if (params.size() < 1)
2601 if (params.size() == 1)
2603 std::string stufftobounce = params[0];
2604 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" PONG "+stufftobounce);
2609 std::string forwardto = params[1];
2610 if (forwardto == this->Instance->Config->ServerName)
2612 // this is a ping for us, send back PONG to the requesting server
2613 params[1] = params[0];
2614 params[0] = forwardto;
2615 DoOneToOne(forwardto,"PONG",params,params[1]);
2619 // not for us, pass it on :)
2620 DoOneToOne(prefix,"PING",params,forwardto);
2626 bool RemoteServer(std::string prefix, std::deque<std::string> ¶ms)
2628 if (params.size() < 4)
2631 std::string servername = params[0];
2632 std::string password = params[1];
2633 // hopcount is not used for a remote server, we calculate this ourselves
2634 std::string description = params[3];
2635 TreeServer* ParentOfThis = FindServer(prefix);
2639 this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
2642 TreeServer* CheckDupe = FindServer(servername);
2645 this->WriteLine("ERROR :Server "+servername+" already exists!");
2646 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+servername+"\2 denied, already exists");
2649 TreeServer* Node = new TreeServer(this->Instance,servername,description,ParentOfThis,NULL);
2650 ParentOfThis->AddChild(Node);
2651 params[3] = ":" + params[3];
2652 DoOneToAllButSender(prefix,"SERVER",params,prefix);
2653 this->Instance->SNO->WriteToSnoMask('l',"Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
2657 bool Outbound_Reply_Server(std::deque<std::string> ¶ms)
2659 if (params.size() < 4)
2662 irc::string servername = params[0].c_str();
2663 std::string sname = params[0];
2664 std::string password = params[1];
2665 int hops = atoi(params[2].c_str());
2669 this->WriteLine("ERROR :Server too far away for authentication");
2670 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
2673 std::string description = params[3];
2674 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2676 if ((x->Name == servername) && (x->RecvPass == password))
2678 TreeServer* CheckDupe = FindServer(sname);
2681 this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
2682 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
2685 // Begin the sync here. this kickstarts the
2686 // other side, waiting in WAIT_AUTH_2 state,
2687 // into starting their burst, as it shows
2688 // that we're happy.
2689 this->LinkState = CONNECTED;
2690 // we should add the details of this server now
2691 // to the servers tree, as a child of the root
2693 TreeServer* Node = new TreeServer(this->Instance,sname,description,TreeRoot,this);
2694 TreeRoot->AddChild(Node);
2695 params[3] = ":" + params[3];
2696 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,sname);
2697 this->bursting = true;
2698 this->DoBurst(Node);
2702 this->WriteLine("ERROR :Invalid credentials");
2703 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
2707 bool Inbound_Server(std::deque<std::string> ¶ms)
2709 if (params.size() < 4)
2712 irc::string servername = params[0].c_str();
2713 std::string sname = params[0];
2714 std::string password = params[1];
2715 int hops = atoi(params[2].c_str());
2719 this->WriteLine("ERROR :Server too far away for authentication");
2720 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
2723 std::string description = params[3];
2724 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2726 if ((x->Name == servername) && (x->RecvPass == password))
2728 TreeServer* CheckDupe = FindServer(sname);
2731 this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
2732 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
2735 /* If the config says this link is encrypted, but the remote side
2736 * hasnt bothered to send the AES command before SERVER, then we
2737 * boot them off as we MUST have this connection encrypted.
2739 if ((x->EncryptionKey != "") && (!this->ctx_in))
2741 this->WriteLine("ERROR :This link requires AES encryption to be enabled. Plaintext connection refused.");
2742 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, remote server did not enable AES.");
2745 this->Instance->SNO->WriteToSnoMask('l',"Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] ("+description+")");
2746 this->InboundServerName = sname;
2747 this->InboundDescription = description;
2748 // this is good. Send our details: Our server name and description and hopcount of 0,
2749 // along with the sendpass from this block.
2750 this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc);
2751 // move to the next state, we are now waiting for THEM.
2752 this->LinkState = WAIT_AUTH_2;
2756 this->WriteLine("ERROR :Invalid credentials");
2757 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
2761 void Split(std::string line, std::deque<std::string> &n)
2764 irc::tokenstream tokens(line);
2766 while ((param = tokens.GetToken()) != "")
2771 bool ProcessLine(std::string line)
2773 std::deque<std::string> params;
2774 irc::string command;
2780 line = line.substr(0, line.find_first_of("\r\n"));
2782 Instance->Log(DEBUG,"IN: %s", line.c_str());
2784 this->Split(line.c_str(),params);
2786 if ((params[0][0] == ':') && (params.size() > 1))
2788 prefix = params[0].substr(1);
2792 command = params[0].c_str();
2795 if ((!this->ctx_in) && (command == "AES"))
2797 std::string sserv = params[0];
2798 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2800 if ((x->EncryptionKey != "") && (x->Name == sserv))
2802 this->InitAES(x->EncryptionKey,sserv);
2808 else if ((this->ctx_in) && (command == "AES"))
2810 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());
2813 switch (this->LinkState)
2818 // Waiting for SERVER command from remote server. Server initiating
2819 // the connection sends the first SERVER command, listening server
2820 // replies with theirs if its happy, then if the initiator is happy,
2821 // it starts to send its net sync, which starts the merge, otherwise
2822 // it sends an ERROR.
2823 if (command == "PASS")
2825 /* Silently ignored */
2827 else if (command == "SERVER")
2829 return this->Inbound_Server(params);
2831 else if (command == "ERROR")
2833 return this->Error(params);
2835 else if (command == "USER")
2837 this->WriteLine("ERROR :Client connections to this port are prohibited.");
2840 else if (command == "CAPAB")
2842 return this->Capab(params);
2844 else if ((command == "U") || (command == "S"))
2846 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
2851 this->WriteLine("ERROR :Invalid command in negotiation phase.");
2856 // Waiting for start of other side's netmerge to say they liked our
2858 if (command == "SERVER")
2860 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
2864 else if ((command == "U") || (command == "S"))
2866 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
2869 else if (command == "BURST")
2873 /* If a time stamp is provided, try and check syncronization */
2874 time_t THEM = atoi(params[0].c_str());
2875 long delta = THEM-time(NULL);
2876 if ((delta < -600) || (delta > 600))
2878 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));
2879 this->WriteLine("ERROR :Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than ten minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!");
2882 else if ((delta < -60) || (delta > 60))
2884 this->Instance->SNO->WriteToSnoMask('l',"\2WARNING\2: Your clocks are out by %d seconds, please consider synching your clocks.",abs(delta));
2887 this->LinkState = CONNECTED;
2888 Node = new TreeServer(this->Instance,InboundServerName,InboundDescription,TreeRoot,this);
2889 TreeRoot->AddChild(Node);
2891 params.push_back(InboundServerName);
2892 params.push_back("*");
2893 params.push_back("1");
2894 params.push_back(":"+InboundDescription);
2895 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,InboundServerName);
2896 this->bursting = true;
2897 this->DoBurst(Node);
2899 else if (command == "ERROR")
2901 return this->Error(params);
2903 else if (command == "CAPAB")
2905 return this->Capab(params);
2910 this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
2914 if (command == "SERVER")
2916 // another server we connected to, which was in WAIT_AUTH_1 state,
2917 // has just sent us their credentials. If we get this far, theyre
2918 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
2919 // if we're happy with this, we should send our netburst which
2920 // kickstarts the merge.
2921 return this->Outbound_Reply_Server(params);
2923 else if (command == "ERROR")
2925 return this->Error(params);
2929 // This is the 'authenticated' state, when all passwords
2930 // have been exchanged and anything past this point is taken
2935 std::string direction = prefix;
2936 userrec* t = this->Instance->FindNick(prefix);
2939 direction = t->server;
2941 TreeServer* route_back_again = BestRouteTo(direction);
2942 if ((!route_back_again) || (route_back_again->GetSocket() != this))
2944 if (route_back_again)
2945 Instance->Log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
2950 * When there is activity on the socket, reset the ping counter so
2951 * that we're not wasting bandwidth pinging an active server.
2953 route_back_again->SetNextPingTime(time(NULL) + 60);
2954 route_back_again->SetPingFlag();
2957 if (command == "SVSMODE")
2959 /* Services expects us to implement
2960 * SVSMODE. In inspircd its the same as
2965 std::string target = "";
2966 /* Yes, know, this is a mess. Its reasonably fast though as we're
2967 * working with std::string here.
2969 if ((command == "NICK") && (params.size() > 1))
2971 return this->IntroduceClient(prefix,params);
2973 else if (command == "FJOIN")
2975 return this->ForceJoin(prefix,params);
2977 else if (command == "STATS")
2979 return this->Stats(prefix, params);
2981 else if (command == "MOTD")
2983 return this->Motd(prefix, params);
2985 else if (command == "ADMIN")
2987 return this->Admin(prefix, params);
2989 else if (command == "SERVER")
2991 return this->RemoteServer(prefix,params);
2993 else if (command == "ERROR")
2995 return this->Error(params);
2997 else if (command == "OPERTYPE")
2999 return this->OperType(prefix,params);
3001 else if (command == "FMODE")
3003 return this->ForceMode(prefix,params);
3005 else if (command == "KILL")
3007 return this->RemoteKill(prefix,params);
3009 else if (command == "FTOPIC")
3011 return this->ForceTopic(prefix,params);
3013 else if (command == "REHASH")
3015 return this->RemoteRehash(prefix,params);
3017 else if (command == "METADATA")
3019 return this->MetaData(prefix,params);
3021 else if (command == "PING")
3024 * We just got a ping from a server that's bursting.
3025 * This can't be right, so set them to not bursting, and
3026 * apply their lines.
3030 this->bursting = false;
3031 Instance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
3035 prefix = this->GetName();
3037 return this->LocalPing(prefix,params);
3039 else if (command == "PONG")
3042 * We just got a pong from a server that's bursting.
3043 * This can't be right, so set them to not bursting, and
3044 * apply their lines.
3048 this->bursting = false;
3049 Instance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
3053 prefix = this->GetName();
3055 return this->LocalPong(prefix,params);
3057 else if (command == "VERSION")
3059 return this->ServerVersion(prefix,params);
3061 else if (command == "FHOST")
3063 return this->ChangeHost(prefix,params);
3065 else if (command == "FNAME")
3067 return this->ChangeName(prefix,params);
3069 else if (command == "ADDLINE")
3071 return this->AddLine(prefix,params);
3073 else if (command == "SVSNICK")
3077 prefix = this->GetName();
3079 return this->ForceNick(prefix,params);
3081 else if (command == "IDLE")
3083 return this->Whois(prefix,params);
3085 else if (command == "PUSH")
3087 return this->Push(prefix,params);
3089 else if (command == "TIME")
3091 return this->Time(prefix,params);
3093 else if ((command == "KICK") && (IsServer(prefix)))
3095 std::string sourceserv = this->myhost;
3096 if (params.size() == 3)
3098 userrec* user = this->Instance->FindNick(params[1]);
3099 chanrec* chan = this->Instance->FindChan(params[0]);
3102 if (!chan->ServerKickUser(user, params[2].c_str(), false))
3103 /* Yikes, the channels gone! */
3107 if (this->InboundServerName != "")
3109 sourceserv = this->InboundServerName;
3111 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
3113 else if (command == "SVSJOIN")
3117 prefix = this->GetName();
3119 return this->ServiceJoin(prefix,params);
3121 else if (command == "SQUIT")
3123 if (params.size() == 2)
3125 this->Squit(FindServer(params[0]),params[1]);
3129 else if (command == "ENDBURST")
3131 this->bursting = false;
3132 Instance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
3133 std::string sourceserv = this->myhost;
3134 if (this->InboundServerName != "")
3136 sourceserv = this->InboundServerName;
3138 this->Instance->SNO->WriteToSnoMask('l',"Received end of netburst from \2%s\2",sourceserv.c_str());
3143 // not a special inter-server command.
3144 // Emulate the actual user doing the command,
3145 // this saves us having a huge ugly parser.
3146 userrec* who = this->Instance->FindNick(prefix);
3147 std::string sourceserv = this->myhost;
3148 if (this->InboundServerName != "")
3150 sourceserv = this->InboundServerName;
3154 if ((command == "NICK") && (params.size() > 0))
3156 /* On nick messages, check that the nick doesnt
3157 * already exist here. If it does, kill their copy,
3160 userrec* x = this->Instance->FindNick(params[0]);
3161 if ((x) && (x != who))
3163 std::deque<std::string> p;
3164 p.push_back(params[0]);
3165 p.push_back("Nickname collision ("+prefix+" -> "+params[0]+")");
3166 DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
3168 p.push_back(prefix);
3169 p.push_back("Nickname collision");
3170 DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
3171 userrec::QuitUser(this->Instance,x,"Nickname collision ("+prefix+" -> "+params[0]+")");
3172 userrec* y = this->Instance->FindNick(prefix);
3175 userrec::QuitUser(this->Instance,y,"Nickname collision");
3177 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
3181 target = who->server;
3182 const char* strparams[127];
3183 for (unsigned int q = 0; q < params.size(); q++)
3185 strparams[q] = params[q].c_str();
3187 switch (this->Instance->CallCommandHandler(command.c_str(), strparams, params.size(), who))
3190 this->WriteLine("ERROR :Unrecognised command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules");
3197 /* CMD_SUCCESS and CMD_USER_DELETED fall through here */
3203 // its not a user. Its either a server, or somethings screwed up.
3204 if (IsServer(prefix))
3206 target = this->Instance->Config->ServerName;
3210 Instance->Log(DEBUG,"Command with unknown origin '%s'",prefix.c_str());
3214 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
3223 virtual std::string GetName()
3225 std::string sourceserv = this->myhost;
3226 if (this->InboundServerName != "")
3228 sourceserv = this->InboundServerName;
3233 virtual void OnTimeout()
3235 if (this->LinkState == CONNECTING)
3237 this->Instance->SNO->WriteToSnoMask('l',"CONNECT: Connection to \002"+myhost+"\002 timed out.");
3238 Link* MyLink = FindLink(myhost);
3244 virtual void OnClose()
3246 // Connection closed.
3247 // If the connection is fully up (state CONNECTED)
3248 // then propogate a netsplit to all peers.
3249 std::string quitserver = this->myhost;
3250 if (this->InboundServerName != "")
3252 quitserver = this->InboundServerName;
3254 TreeServer* s = FindServer(quitserver);
3257 Squit(s,"Remote host closed the connection");
3259 this->Instance->SNO->WriteToSnoMask('l',"Connection to '\2%s\2' failed.",quitserver.c_str());
3262 virtual int OnIncomingConnection(int newsock, char* ip)
3264 /* To prevent anyone from attempting to flood opers/DDoS by connecting to the server port,
3265 * or discovering if this port is the server port, we don't allow connections from any
3266 * IPs for which we don't have a link block.
3270 found = (std::find(ValidIPs.begin(), ValidIPs.end(), ip) != ValidIPs.end());
3273 for (vector<std::string>::iterator i = ValidIPs.begin(); i != ValidIPs.end(); i++)
3274 if (MatchCIDR(ip, (*i).c_str()))
3279 this->Instance->SNO->WriteToSnoMask('l',"Server connection from %s denied (no link blocks with that IP address)", ip);
3284 TreeSocket* s = new TreeSocket(this->Instance, newsock, ip);
3285 s = s; /* Whinge whinge whinge, thats all GCC ever does. */
3290 /** This class is used to resolve server hostnames during /connect and autoconnect.
3291 * As of 1.1, the resolver system is seperated out from InspSocket, so we must do this
3292 * resolver step first ourselves if we need it. This is totally nonblocking, and will
3293 * callback to OnLookupComplete or OnError when completed. Once it has completed we
3294 * will have an IP address which we can then use to continue our connection.
3296 class ServernameResolver : public Resolver
3299 /** A copy of the Link tag info for what we're connecting to.
3300 * We take a copy, rather than using a pointer, just in case the
3301 * admin takes the tag away and rehashes while the domain is resolving.
3305 ServernameResolver(InspIRCd* Instance, const std::string &hostname, Link x) : Resolver(Instance, hostname, DNS_QUERY_FORWARD), MyLink(x)
3307 /* Nothing in here, folks */
3310 void OnLookupComplete(const std::string &result)
3312 /* Initiate the connection, now that we have an IP to use.
3313 * Passing a hostname directly to InspSocket causes it to
3314 * just bail and set its FD to -1.
3316 TreeServer* CheckDupe = FindServer(MyLink.Name.c_str());
3317 if (!CheckDupe) /* Check that nobody tried to connect it successfully while we were resolving */
3319 TreeSocket* newsocket = new TreeSocket(ServerInstance, result,MyLink.Port,false,10,MyLink.Name.c_str());
3320 if (newsocket->GetFd() > -1)
3326 /* Something barfed, show the opers */
3327 ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",MyLink.Name.c_str(),strerror(errno));
3329 DoFailOver(&MyLink);
3334 void OnError(ResolverError e, const std::string &errormessage)
3337 ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: Unable to resolve hostname - %s",MyLink.Name.c_str(),errormessage.c_str());
3338 DoFailOver(&MyLink);
3342 class SecurityIPResolver : public Resolver
3347 SecurityIPResolver(InspIRCd* Instance, const std::string &hostname, Link x) : Resolver(Instance, hostname, DNS_QUERY_FORWARD), MyLink(x)
3351 void OnLookupComplete(const std::string &result)
3353 ServerInstance->Log(DEBUG,"Security IP cache: Adding IP address '%s' for Link '%s'",result.c_str(),MyLink.Name.c_str());
3354 ValidIPs.push_back(result);
3357 void OnError(ResolverError e, const std::string &errormessage)
3359 ServerInstance->Log(DEBUG,"Could not resolve IP associated with Link '%s': %s",MyLink.Name.c_str(),errormessage.c_str());
3363 void AddThisServer(TreeServer* server, std::deque<TreeServer*> &list)
3365 for (unsigned int c = 0; c < list.size(); c++)
3367 if (list[c] == server)
3372 list.push_back(server);
3375 // returns a list of DIRECT servernames for a specific channel
3376 void GetListOfServersForChannel(chanrec* c, std::deque<TreeServer*> &list)
3378 CUList *ulist = c->GetUsers();
3379 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
3381 if (i->second->GetFd() < 0)
3383 TreeServer* best = BestRouteTo(i->second->server);
3385 AddThisServer(best,list);
3391 bool DoOneToAllButSenderRaw(std::string data, std::string omit, std::string prefix, irc::string command, std::deque<std::string> ¶ms)
3393 TreeServer* omitroute = BestRouteTo(omit);
3394 if ((command == "NOTICE") || (command == "PRIVMSG"))
3396 if (params.size() >= 2)
3399 if ((*(params[0].c_str()) == '@') || (*(params[0].c_str()) == '%') || (*(params[0].c_str()) == '+'))
3401 params[0] = params[0].substr(1, params[0].length()-1);
3403 if ((*(params[0].c_str()) != '#') && (*(params[0].c_str()) != '$'))
3405 // special routing for private messages/notices
3406 userrec* d = ServerInstance->FindNick(params[0]);
3409 std::deque<std::string> par;
3410 par.push_back(params[0]);
3411 par.push_back(":"+params[1]);
3412 DoOneToOne(prefix,command.c_str(),par,d->server);
3416 else if (*(params[0].c_str()) == '$')
3418 std::deque<std::string> par;
3419 par.push_back(params[0]);
3420 par.push_back(":"+params[1]);
3421 DoOneToAllButSender(prefix,command.c_str(),par,omitroute->GetName());
3426 ServerInstance->Log(DEBUG,"Channel privmsg going to chan %s",params[0].c_str());
3427 chanrec* c = ServerInstance->FindChan(params[0]);
3430 std::deque<TreeServer*> list;
3431 GetListOfServersForChannel(c,list);
3432 ServerInstance->Log(DEBUG,"Got a list of %d servers",list.size());
3433 unsigned int lsize = list.size();
3434 for (unsigned int i = 0; i < lsize; i++)
3436 TreeSocket* Sock = list[i]->GetSocket();
3437 if ((Sock) && (list[i]->GetName() != omit) && (omitroute != list[i]))
3439 ServerInstance->Log(DEBUG,"Writing privmsg to server %s",list[i]->GetName().c_str());
3440 Sock->WriteLine(data);
3448 unsigned int items = TreeRoot->ChildCount();
3449 for (unsigned int x = 0; x < items; x++)
3451 TreeServer* Route = TreeRoot->GetChild(x);
3452 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
3454 TreeSocket* Sock = Route->GetSocket();
3456 Sock->WriteLine(data);
3462 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string omit)
3464 TreeServer* omitroute = BestRouteTo(omit);
3465 std::string FullLine = ":" + prefix + " " + command;
3466 unsigned int words = params.size();
3467 for (unsigned int x = 0; x < words; x++)
3469 FullLine = FullLine + " " + params[x];
3471 unsigned int items = TreeRoot->ChildCount();
3472 for (unsigned int x = 0; x < items; x++)
3474 TreeServer* Route = TreeRoot->GetChild(x);
3475 // Send the line IF:
3476 // The route has a socket (its a direct connection)
3477 // The route isnt the one to be omitted
3478 // The route isnt the path to the one to be omitted
3479 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
3481 TreeSocket* Sock = Route->GetSocket();
3483 Sock->WriteLine(FullLine);
3489 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> ¶ms)
3491 std::string FullLine = ":" + prefix + " " + command;
3492 unsigned int words = params.size();
3493 for (unsigned int x = 0; x < words; x++)
3495 FullLine = FullLine + " " + params[x];
3497 unsigned int items = TreeRoot->ChildCount();
3498 for (unsigned int x = 0; x < items; x++)
3500 TreeServer* Route = TreeRoot->GetChild(x);
3501 if (Route && Route->GetSocket())
3503 TreeSocket* Sock = Route->GetSocket();
3505 Sock->WriteLine(FullLine);
3511 bool DoOneToMany(const char* prefix, const char* command, std::deque<std::string> ¶ms)
3513 std::string spfx = prefix;
3514 std::string scmd = command;
3515 return DoOneToMany(spfx, scmd, params);
3518 bool DoOneToAllButSender(const char* prefix, const char* command, std::deque<std::string> ¶ms, std::string omit)
3520 std::string spfx = prefix;
3521 std::string scmd = command;
3522 return DoOneToAllButSender(spfx, scmd, params, omit);
3525 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string target)
3527 TreeServer* Route = BestRouteTo(target);
3530 std::string FullLine = ":" + prefix + " " + command;
3531 unsigned int words = params.size();
3532 for (unsigned int x = 0; x < words; x++)
3534 FullLine = FullLine + " " + params[x];
3536 if (Route && Route->GetSocket())
3538 TreeSocket* Sock = Route->GetSocket();
3540 Sock->WriteLine(FullLine);
3550 std::vector<TreeSocket*> Bindings;
3552 void ReadConfiguration(bool rebind)
3554 Conf = new ConfigReader(ServerInstance);
3557 for (int j =0; j < Conf->Enumerate("bind"); j++)
3559 std::string Type = Conf->ReadValue("bind","type",j);
3560 std::string IP = Conf->ReadValue("bind","address",j);
3561 long Port = Conf->ReadInteger("bind","port",j,true);
3562 if (Type == "servers")
3568 TreeSocket* listener = new TreeSocket(ServerInstance, IP.c_str(),Port,true,10);
3569 if (listener->GetState() == I_LISTENING)
3571 Bindings.push_back(listener);
3575 ServerInstance->Log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port %d",Port);
3582 FlatLinks = Conf->ReadFlag("options","flatlinks",0);
3583 HideULines = Conf->ReadFlag("options","hideulines",0);
3586 for (int j =0; j < Conf->Enumerate("link"); j++)
3589 std::string Allow = Conf->ReadValue("link","allowmask",j);
3590 L.Name = (Conf->ReadValue("link","name",j)).c_str();
3591 L.IPAddr = Conf->ReadValue("link","ipaddr",j);
3592 L.FailOver = Conf->ReadValue("link","failover",j).c_str();
3593 L.Port = Conf->ReadInteger("link","port",j,true);
3594 L.SendPass = Conf->ReadValue("link","sendpass",j);
3595 L.RecvPass = Conf->ReadValue("link","recvpass",j);
3596 L.AutoConnect = Conf->ReadInteger("link","autoconnect",j,true);
3597 L.EncryptionKey = Conf->ReadValue("link","encryptionkey",j);
3598 L.HiddenFromStats = Conf->ReadFlag("link","hidden",j);
3599 L.NextConnectTime = time(NULL) + L.AutoConnect;
3600 /* Bugfix by brain, do not allow people to enter bad configurations */
3601 if (L.Name != ServerInstance->Config->ServerName)
3603 if ((L.IPAddr != "") && (L.RecvPass != "") && (L.SendPass != "") && (L.Name != "") && (L.Port))
3605 ValidIPs.push_back(L.IPAddr);
3608 ValidIPs.push_back(Allow);
3610 /* Needs resolving */
3612 if (insp_aton(L.IPAddr.c_str(), &binip) < 1)
3616 SecurityIPResolver* sr = new SecurityIPResolver(ServerInstance, L.IPAddr, L);
3617 ServerInstance->AddResolver(sr);
3619 catch (ModuleException& e)
3621 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
3625 LinkBlocks.push_back(L);
3626 ServerInstance->Log(DEBUG,"m_spanningtree: Read server %s with host %s:%d",L.Name.c_str(),L.IPAddr.c_str(),L.Port);
3632 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', IP address not defined!",L.Name.c_str());
3634 else if (L.RecvPass == "")
3636 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', recvpass not defined!",L.Name.c_str());
3638 else if (L.SendPass == "")
3640 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', sendpass not defined!",L.Name.c_str());
3642 else if (L.Name == "")
3644 ServerInstance->Log(DEFAULT,"Invalid configuration, link tag without a name!");
3648 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', no port specified!",L.Name.c_str());
3654 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', link tag has the same server name as the local server!",L.Name.c_str());
3661 class ModuleSpanningTree : public Module
3663 std::vector<TreeSocket*> Bindings;
3666 unsigned int max_local;
3667 unsigned int max_global;
3668 cmd_rconnect* command_rconnect;
3672 ModuleSpanningTree(InspIRCd* Me)
3673 : Module::Module(Me), max_local(0), max_global(0)
3678 ::ServerInstance = Me;
3680 // Create the root of the tree
3681 TreeRoot = new TreeServer(ServerInstance, ServerInstance->Config->ServerName, ServerInstance->Config->ServerDesc);
3683 ReadConfiguration(true);
3685 command_rconnect = new cmd_rconnect(ServerInstance, this);
3686 ServerInstance->AddCommand(command_rconnect);
3689 void ShowLinks(TreeServer* Current, userrec* user, int hops)
3691 std::string Parent = TreeRoot->GetName();
3692 if (Current->GetParent())
3694 Parent = Current->GetParent()->GetName();
3696 for (unsigned int q = 0; q < Current->ChildCount(); q++)
3698 if ((HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str())))
3702 ShowLinks(Current->GetChild(q),user,hops+1);
3707 ShowLinks(Current->GetChild(q),user,hops+1);
3710 /* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */
3711 if ((HideULines) && (ServerInstance->ULine(Current->GetName().c_str())) && (!*user->oper))
3713 user->WriteServ("364 %s %s %s :%d %s",user->nick,Current->GetName().c_str(),(FlatLinks && (!*user->oper)) ? ServerInstance->Config->ServerName : Parent.c_str(),(FlatLinks && (!*user->oper)) ? 0 : hops,Current->GetDesc().c_str());
3716 int CountLocalServs()
3718 return TreeRoot->ChildCount();
3723 return serverlist.size();
3726 void HandleLinks(const char** parameters, int pcnt, userrec* user)
3728 ShowLinks(TreeRoot,user,0);
3729 user->WriteServ("365 %s * :End of /LINKS list.",user->nick);
3733 void HandleLusers(const char** parameters, int pcnt, userrec* user)
3735 unsigned int n_users = ServerInstance->UserCount();
3737 /* Only update these when someone wants to see them, more efficient */
3738 if ((unsigned int)ServerInstance->LocalUserCount() > max_local)
3739 max_local = ServerInstance->LocalUserCount();
3740 if (n_users > max_global)
3741 max_global = n_users;
3743 user->WriteServ("251 %s :There are %d users and %d invisible on %d servers",user->nick,n_users-ServerInstance->InvisibleUserCount(),ServerInstance->InvisibleUserCount(),this->CountServs());
3744 if (ServerInstance->OperCount())
3745 user->WriteServ("252 %s %d :operator(s) online",user->nick,ServerInstance->OperCount());
3746 if (ServerInstance->UnregisteredUserCount())
3747 user->WriteServ("253 %s %d :unknown connections",user->nick,ServerInstance->UnregisteredUserCount());
3748 if (ServerInstance->ChannelCount())
3749 user->WriteServ("254 %s %d :channels formed",user->nick,ServerInstance->ChannelCount());
3750 user->WriteServ("254 %s :I have %d clients and %d servers",user->nick,ServerInstance->LocalUserCount(),this->CountLocalServs());
3751 user->WriteServ("265 %s :Current Local Users: %d Max: %d",user->nick,ServerInstance->LocalUserCount(),max_local);
3752 user->WriteServ("266 %s :Current Global Users: %d Max: %d",user->nick,n_users,max_global);
3756 // WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS.
3758 void ShowMap(TreeServer* Current, userrec* user, int depth, char matrix[128][80], float &totusers, float &totservers)
3762 for (int t = 0; t < depth; t++)
3764 matrix[line][t] = ' ';
3767 // For Aligning, we need to work out exactly how deep this thing is, and produce
3768 // a 'Spacer' String to compensate.
3771 memset(spacer,' ',40);
3772 if ((40 - Current->GetName().length() - depth) > 1) {
3773 spacer[40 - Current->GetName().length() - depth] = '\0';
3782 if (ServerInstance->clientlist.size() == 0) {
3783 // If there are no users, WHO THE HELL DID THE /MAP?!?!?!
3788 percent = ((float)Current->GetUserCount() / (float)ServerInstance->clientlist.size()) * 100;
3790 snprintf(text, 80, "%s %s%5d [%5.2f%%]", Current->GetName().c_str(), spacer, Current->GetUserCount(), percent);
3791 totusers += Current->GetUserCount();
3793 strlcpy(&matrix[line][depth],text,80);
3795 for (unsigned int q = 0; q < Current->ChildCount(); q++)
3797 if ((HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str())))
3801 ShowMap(Current->GetChild(q),user,(FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers);
3806 ShowMap(Current->GetChild(q),user,(FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers);
3812 int HandleMotd(const char** parameters, int pcnt, userrec* user)
3816 /* Remote MOTD, the server is within the 1st parameter */
3817 std::deque<std::string> params;
3818 params.push_back(parameters[0]);
3820 /* Send it out remotely, generate no reply yet */
3821 TreeServer* s = FindServerMask(parameters[0]);
3824 DoOneToOne(user->nick, "MOTD", params, s->GetName());
3828 user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]);
3835 int HandleAdmin(const char** parameters, int pcnt, userrec* user)
3839 /* Remote ADMIN, the server is within the 1st parameter */
3840 std::deque<std::string> params;
3841 params.push_back(parameters[0]);
3843 /* Send it out remotely, generate no reply yet */
3844 TreeServer* s = FindServerMask(parameters[0]);
3847 DoOneToOne(user->nick, "ADMIN", params, s->GetName());
3851 user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]);
3858 int HandleStats(const char** parameters, int pcnt, userrec* user)
3862 /* Remote STATS, the server is within the 2nd parameter */
3863 std::deque<std::string> params;
3864 params.push_back(parameters[0]);
3865 params.push_back(parameters[1]);
3866 /* Send it out remotely, generate no reply yet */
3867 TreeServer* s = FindServerMask(parameters[1]);
3870 params[1] = s->GetName();
3871 DoOneToOne(user->nick, "STATS", params, s->GetName());
3875 user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]);
3882 // Ok, prepare to be confused.
3883 // After much mulling over how to approach this, it struck me that
3884 // the 'usual' way of doing a /MAP isnt the best way. Instead of
3885 // keeping track of a ton of ascii characters, and line by line
3886 // under recursion working out where to place them using multiplications
3887 // and divisons, we instead render the map onto a backplane of characters
3888 // (a character matrix), then draw the branches as a series of "L" shapes
3889 // from the nodes. This is not only friendlier on CPU it uses less stack.
3891 void HandleMap(const char** parameters, int pcnt, userrec* user)
3893 // This array represents a virtual screen which we will
3894 // "scratch" draw to, as the console device of an irc
3895 // client does not provide for a proper terminal.
3897 float totservers = 0;
3898 char matrix[128][80];
3899 for (unsigned int t = 0; t < 128; t++)
3901 matrix[t][0] = '\0';
3904 // The only recursive bit is called here.
3905 ShowMap(TreeRoot,user,0,matrix,totusers,totservers);
3906 // Process each line one by one. The algorithm has a limit of
3907 // 128 servers (which is far more than a spanning tree should have
3908 // anyway, so we're ok). This limit can be raised simply by making
3909 // the character matrix deeper, 128 rows taking 10k of memory.
3910 for (int l = 1; l < line; l++)
3912 // scan across the line looking for the start of the
3913 // servername (the recursive part of the algorithm has placed
3914 // the servers at indented positions depending on what they
3916 int first_nonspace = 0;
3917 while (matrix[l][first_nonspace] == ' ')
3922 // Draw the `- (corner) section: this may be overwritten by
3923 // another L shape passing along the same vertical pane, becoming
3924 // a |- (branch) section instead.
3925 matrix[l][first_nonspace] = '-';
3926 matrix[l][first_nonspace-1] = '`';
3928 // Draw upwards until we hit the parent server, causing possibly
3929 // other corners (`-) to become branches (|-)
3930 while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`'))
3932 matrix[l2][first_nonspace-1] = '|';
3936 // dump the whole lot to the user. This is the easy bit, honest.
3937 for (int t = 0; t < line; t++)
3939 user->WriteServ("006 %s :%s",user->nick,&matrix[t][0]);
3941 float avg_users = totusers / totservers;
3942 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);
3943 user->WriteServ("007 %s :End of /MAP",user->nick);
3947 int HandleSquit(const char** parameters, int pcnt, userrec* user)
3949 TreeServer* s = FindServerMask(parameters[0]);
3954 user->WriteServ("NOTICE %s :*** SQUIT: Foolish mortal, you cannot make a server SQUIT itself! (%s matches local server name)",user->nick,parameters[0]);
3957 TreeSocket* sock = s->GetSocket();
3960 ServerInstance->Log(DEBUG,"Splitting server %s",s->GetName().c_str());
3961 ServerInstance->SNO->WriteToSnoMask('l',"SQUIT: Server \002%s\002 removed from network by %s",parameters[0],user->nick);
3962 sock->Squit(s,"Server quit by "+std::string(user->nick)+"!"+std::string(user->ident)+"@"+std::string(user->host));
3963 ServerInstance->SE->DelFd(sock);
3969 user->WriteServ("NOTICE %s :*** SQUIT: The server \002%s\002 is not directly connected.",user->nick,parameters[0]);
3974 user->WriteServ("NOTICE %s :*** SQUIT: The server \002%s\002 does not exist on the network.",user->nick,parameters[0]);
3979 int HandleTime(const char** parameters, int pcnt, userrec* user)
3981 if ((IS_LOCAL(user)) && (pcnt))
3983 TreeServer* found = FindServerMask(parameters[0]);
3986 // we dont' override for local server
3987 if (found == TreeRoot)
3990 std::deque<std::string> params;
3991 params.push_back(found->GetName());
3992 params.push_back(user->nick);
3993 DoOneToOne(ServerInstance->Config->ServerName,"TIME",params,found->GetName());
3997 user->WriteServ("402 %s %s :No such server",user->nick,parameters[0]);
4003 int HandleRemoteWhois(const char** parameters, int pcnt, userrec* user)
4005 if ((IS_LOCAL(user)) && (pcnt > 1))
4007 userrec* remote = ServerInstance->FindNick(parameters[1]);
4008 if ((remote) && (remote->GetFd() < 0))
4010 std::deque<std::string> params;
4011 params.push_back(parameters[1]);
4012 DoOneToOne(user->nick,"IDLE",params,remote->server);
4017 user->WriteServ("401 %s %s :No such nick/channel",user->nick, parameters[1]);
4018 user->WriteServ("318 %s %s :End of /WHOIS list.",user->nick, parameters[1]);
4025 void DoPingChecks(time_t curtime)
4027 for (unsigned int j = 0; j < TreeRoot->ChildCount(); j++)
4029 TreeServer* serv = TreeRoot->GetChild(j);
4030 TreeSocket* sock = serv->GetSocket();
4033 if (curtime >= serv->NextPingTime())
4035 if (serv->AnsweredLastPing())
4037 sock->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" PING "+serv->GetName());
4038 serv->SetNextPingTime(curtime + 60);
4042 // they didnt answer, boot them
4043 ServerInstance->SNO->WriteToSnoMask('l',"Server \002%s\002 pinged out",serv->GetName().c_str());
4044 sock->Squit(serv,"Ping timeout");
4045 ServerInstance->SE->DelFd(sock);
4055 void ConnectServer(Link* x)
4059 /* Do we already have an IP? If so, no need to resolve it. */
4060 if (insp_aton(x->IPAddr.c_str(), &binip) > 0)
4062 TreeSocket* newsocket = new TreeSocket(ServerInstance, x->IPAddr,x->Port,false,10,x->Name.c_str());
4063 if (newsocket->GetFd() > -1)
4065 /* Handled automatically on success */
4069 ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(),strerror(errno));
4071 this->DoFailOver(x);
4078 ServernameResolver* snr = new ServernameResolver(ServerInstance,x->IPAddr, *x);
4079 ServerInstance->AddResolver(snr);
4081 catch (ModuleException& e)
4083 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
4084 this->DoFailOver(x);
4089 void DoFailOver(Link* x)
4091 if (x->FailOver.length())
4093 if (x->FailOver == x->Name)
4095 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());
4098 Link* TryThisOne = this->FindLink(x->FailOver.c_str());
4101 ServerInstance->SNO->WriteToSnoMask('l',"FAILOVER: Trying failover link for \002%s\002: \002%s\002...", x->Name.c_str(), TryThisOne->Name.c_str());
4102 ConnectServer(TryThisOne);
4106 ServerInstance->SNO->WriteToSnoMask('l',"FAILOVER: Invalid failover server specified for server \002%s\002, will not follow!", x->Name.c_str());
4111 Link* FindLink(const std::string& name)
4113 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
4115 if (ServerInstance->MatchText(x->Name.c_str(), name.c_str()))
4123 void AutoConnectServers(time_t curtime)
4125 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
4127 if ((x->AutoConnect) && (curtime >= x->NextConnectTime))
4129 ServerInstance->Log(DEBUG,"Auto-Connecting %s",x->Name.c_str());
4130 x->NextConnectTime = curtime + x->AutoConnect;
4131 TreeServer* CheckDupe = FindServer(x->Name.c_str());
4132 if (x->FailOver.length())
4134 TreeServer* CheckFailOver = FindServer(x->FailOver.c_str());
4137 /* The failover for this server is currently a member of the network.
4138 * The failover probably succeeded, where the main link did not.
4139 * Don't try the main link until the failover is gone again.
4146 // an autoconnected server is not connected. Check if its time to connect it
4147 ServerInstance->SNO->WriteToSnoMask('l',"AUTOCONNECT: Auto-connecting server \002%s\002 (%lu seconds until next attempt)",x->Name.c_str(),x->AutoConnect);
4148 this->ConnectServer(&(*x));
4154 int HandleVersion(const char** parameters, int pcnt, userrec* user)
4156 // we've already checked if pcnt > 0, so this is safe
4157 TreeServer* found = FindServerMask(parameters[0]);
4160 std::string Version = found->GetVersion();
4161 user->WriteServ("351 %s :%s",user->nick,Version.c_str());
4162 if (found == TreeRoot)
4164 std::stringstream out(ServerInstance->Config->data005);
4165 std::string token = "";
4166 std::string line5 = "";
4167 int token_counter = 0;
4172 line5 = line5 + token + " ";
4175 if ((token_counter >= 13) || (out.eof() == true))
4177 user->WriteServ("005 %s %s:are supported by this server",user->nick,line5.c_str());
4186 user->WriteServ("402 %s %s :No such server",user->nick,parameters[0]);
4191 int HandleConnect(const char** parameters, int pcnt, userrec* user)
4193 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
4195 if (ServerInstance->MatchText(x->Name.c_str(),parameters[0]))
4197 TreeServer* CheckDupe = FindServer(x->Name.c_str());
4200 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);
4201 ConnectServer(&(*x));
4206 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());
4211 user->WriteServ("NOTICE %s :*** CONNECT: No server matching \002%s\002 could be found in the config file.",user->nick,parameters[0]);
4215 virtual int OnStats(char statschar, userrec* user, string_list &results)
4217 if (statschar == 'c')
4219 for (unsigned int i = 0; i < LinkBlocks.size(); i++)
4221 results.push_back(std::string(ServerInstance->Config->ServerName)+" 213 "+user->nick+" C *@"+(LinkBlocks[i].HiddenFromStats ? "<hidden>" : LinkBlocks[i].IPAddr)+" * "+LinkBlocks[i].Name.c_str()+" "+ConvToStr(LinkBlocks[i].Port)+" "+(LinkBlocks[i].EncryptionKey != "" ? 'e' : '-')+(LinkBlocks[i].AutoConnect ? 'a' : '-')+'s');
4222 results.push_back(std::string(ServerInstance->Config->ServerName)+" 244 "+user->nick+" H * * "+LinkBlocks[i].Name.c_str());
4224 results.push_back(std::string(ServerInstance->Config->ServerName)+" 219 "+user->nick+" "+statschar+" :End of /STATS report");
4225 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);
4231 virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, bool validated)
4233 /* If the command doesnt appear to be valid, we dont want to mess with it. */
4237 if (command == "CONNECT")
4239 return this->HandleConnect(parameters,pcnt,user);
4241 else if (command == "STATS")
4243 return this->HandleStats(parameters,pcnt,user);
4245 else if (command == "MOTD")
4247 return this->HandleMotd(parameters,pcnt,user);
4249 else if (command == "ADMIN")
4251 return this->HandleAdmin(parameters,pcnt,user);
4253 else if (command == "SQUIT")
4255 return this->HandleSquit(parameters,pcnt,user);
4257 else if (command == "MAP")
4259 this->HandleMap(parameters,pcnt,user);
4262 else if ((command == "TIME") && (pcnt > 0))
4264 return this->HandleTime(parameters,pcnt,user);
4266 else if (command == "LUSERS")
4268 this->HandleLusers(parameters,pcnt,user);
4271 else if (command == "LINKS")
4273 this->HandleLinks(parameters,pcnt,user);
4276 else if (command == "WHOIS")
4281 return this->HandleRemoteWhois(parameters,pcnt,user);
4284 else if ((command == "VERSION") && (pcnt > 0))
4286 this->HandleVersion(parameters,pcnt,user);
4293 virtual void OnPostCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, CmdResult result)
4295 if ((result == CMD_SUCCESS) && (ServerInstance->IsValidModuleCommand(command, pcnt, user)))
4297 // this bit of code cleverly routes all module commands
4298 // to all remote severs *automatically* so that modules
4299 // can just handle commands locally, without having
4300 // to have any special provision in place for remote
4301 // commands and linking protocols.
4302 std::deque<std::string> params;
4304 for (int j = 0; j < pcnt; j++)
4306 if (strchr(parameters[j],' '))
4308 params.push_back(":" + std::string(parameters[j]));
4312 params.push_back(std::string(parameters[j]));
4315 ServerInstance->Log(DEBUG,"Globally route '%s'",command.c_str());
4316 DoOneToMany(user->nick,command,params);
4320 virtual void OnGetServerDescription(const std::string &servername,std::string &description)
4322 TreeServer* s = FindServer(servername);
4325 description = s->GetDesc();
4329 virtual void OnUserInvite(userrec* source,userrec* dest,chanrec* channel)
4331 if (IS_LOCAL(source))
4333 std::deque<std::string> params;
4334 params.push_back(dest->nick);
4335 params.push_back(channel->name);
4336 DoOneToMany(source->nick,"INVITE",params);
4340 virtual void OnPostLocalTopicChange(userrec* user, chanrec* chan, const std::string &topic)
4342 std::deque<std::string> params;
4343 params.push_back(chan->name);
4344 params.push_back(":"+topic);
4345 DoOneToMany(user->nick,"TOPIC",params);
4348 virtual void OnWallops(userrec* user, const std::string &text)
4352 std::deque<std::string> params;
4353 params.push_back(":"+text);
4354 DoOneToMany(user->nick,"WALLOPS",params);
4358 virtual void OnUserNotice(userrec* user, void* dest, int target_type, const std::string &text, char status)
4360 if (target_type == TYPE_USER)
4362 userrec* d = (userrec*)dest;
4363 if ((d->GetFd() < 0) && (IS_LOCAL(user)))
4365 std::deque<std::string> params;
4367 params.push_back(d->nick);
4368 params.push_back(":"+text);
4369 DoOneToOne(user->nick,"NOTICE",params,d->server);
4372 else if (target_type == TYPE_CHANNEL)
4376 chanrec *c = (chanrec*)dest;
4379 std::string cname = c->name;
4381 cname = status + cname;
4382 std::deque<TreeServer*> list;
4383 GetListOfServersForChannel(c,list);
4384 unsigned int ucount = list.size();
4385 for (unsigned int i = 0; i < ucount; i++)
4387 TreeSocket* Sock = list[i]->GetSocket();
4389 Sock->WriteLine(":"+std::string(user->nick)+" NOTICE "+cname+" :"+text);
4394 else if (target_type == TYPE_SERVER)
4398 char* target = (char*)dest;
4399 std::deque<std::string> par;
4400 par.push_back(target);
4401 par.push_back(":"+text);
4402 DoOneToMany(user->nick,"NOTICE",par);
4407 virtual void OnUserMessage(userrec* user, void* dest, int target_type, const std::string &text, char status)
4409 if (target_type == TYPE_USER)
4411 // route private messages which are targetted at clients only to the server
4412 // which needs to receive them
4413 userrec* d = (userrec*)dest;
4414 if ((d->GetFd() < 0) && (IS_LOCAL(user)))
4416 std::deque<std::string> params;
4418 params.push_back(d->nick);
4419 params.push_back(":"+text);
4420 DoOneToOne(user->nick,"PRIVMSG",params,d->server);
4423 else if (target_type == TYPE_CHANNEL)
4427 chanrec *c = (chanrec*)dest;
4430 std::string cname = c->name;
4432 cname = status + cname;
4433 std::deque<TreeServer*> list;
4434 GetListOfServersForChannel(c,list);
4435 unsigned int ucount = list.size();
4436 for (unsigned int i = 0; i < ucount; i++)
4438 TreeSocket* Sock = list[i]->GetSocket();
4440 Sock->WriteLine(":"+std::string(user->nick)+" PRIVMSG "+cname+" :"+text);
4445 else if (target_type == TYPE_SERVER)
4449 char* target = (char*)dest;
4450 std::deque<std::string> par;
4451 par.push_back(target);
4452 par.push_back(":"+text);
4453 DoOneToMany(user->nick,"PRIVMSG",par);
4458 virtual void OnBackgroundTimer(time_t curtime)
4460 AutoConnectServers(curtime);
4461 DoPingChecks(curtime);
4464 virtual void OnUserJoin(userrec* user, chanrec* channel)
4466 // Only do this for local users
4470 snprintf(ts,24,"%lu",(unsigned long)channel->age);
4472 std::deque<std::string> params;
4474 params.push_back(channel->name);
4476 /** XXX: The client protocol will IGNORE this parameter.
4477 * We could make use of it if we wanted to keep the TS
4478 * in step if somehow we lose it.
4480 params.push_back(ts);
4482 if (channel->GetUserCounter() > 1)
4484 // not the first in the channel
4485 DoOneToMany(user->nick,"JOIN",params);
4489 // first in the channel, set up their permissions
4490 // and the channel TS with FJOIN.
4492 params.push_back(channel->name);
4493 params.push_back(ts);
4494 params.push_back("@,"+std::string(user->nick));
4495 DoOneToMany(ServerInstance->Config->ServerName,"FJOIN",params);
4500 virtual void OnChangeHost(userrec* user, const std::string &newhost)
4502 // only occurs for local clients
4503 if (user->registered != REG_ALL)
4505 std::deque<std::string> params;
4506 params.push_back(newhost);
4507 DoOneToMany(user->nick,"FHOST",params);
4510 virtual void OnChangeName(userrec* user, const std::string &gecos)
4512 // only occurs for local clients
4513 if (user->registered != REG_ALL)
4515 std::deque<std::string> params;
4516 params.push_back(gecos);
4517 DoOneToMany(user->nick,"FNAME",params);
4520 virtual void OnUserPart(userrec* user, chanrec* channel, const std::string &partmessage)
4524 std::deque<std::string> params;
4525 params.push_back(channel->name);
4526 if (partmessage != "")
4527 params.push_back(":"+partmessage);
4528 DoOneToMany(user->nick,"PART",params);
4532 virtual void OnUserConnect(userrec* user)
4534 char agestr[MAXBUF];
4537 std::deque<std::string> params;
4538 snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age);
4539 params.push_back(agestr);
4540 params.push_back(user->nick);
4541 params.push_back(user->host);
4542 params.push_back(user->dhost);
4543 params.push_back(user->ident);
4544 params.push_back("+"+std::string(user->FormatModes()));
4545 params.push_back(user->GetIPString());
4546 params.push_back(":"+std::string(user->fullname));
4547 DoOneToMany(ServerInstance->Config->ServerName,"NICK",params);
4549 // User is Local, change needs to be reflected!
4550 TreeServer* SourceServer = FindServer(user->server);
4553 SourceServer->AddUserCount();
4559 virtual void OnUserQuit(userrec* user, const std::string &reason)
4561 if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
4563 std::deque<std::string> params;
4564 params.push_back(":"+reason);
4565 DoOneToMany(user->nick,"QUIT",params);
4567 // Regardless, We need to modify the user Counts..
4568 TreeServer* SourceServer = FindServer(user->server);
4571 SourceServer->DelUserCount();
4576 virtual void OnUserPostNick(userrec* user, const std::string &oldnick)
4580 std::deque<std::string> params;
4581 params.push_back(user->nick);
4582 DoOneToMany(oldnick,"NICK",params);
4586 virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason)
4588 if ((source) && (IS_LOCAL(source)))
4590 std::deque<std::string> params;
4591 params.push_back(chan->name);
4592 params.push_back(user->nick);
4593 params.push_back(":"+reason);
4594 DoOneToMany(source->nick,"KICK",params);
4598 std::deque<std::string> params;
4599 params.push_back(chan->name);
4600 params.push_back(user->nick);
4601 params.push_back(":"+reason);
4602 DoOneToMany(ServerInstance->Config->ServerName,"KICK",params);
4606 virtual void OnRemoteKill(userrec* source, userrec* dest, const std::string &reason)
4608 std::deque<std::string> params;
4609 params.push_back(dest->nick);
4610 params.push_back(":"+reason);
4611 DoOneToMany(source->nick,"KILL",params);
4614 virtual void OnRehash(const std::string ¶meter)
4616 if (parameter != "")
4618 std::deque<std::string> params;
4619 params.push_back(parameter);
4620 DoOneToMany(ServerInstance->Config->ServerName,"REHASH",params);
4622 if (ServerInstance->MatchText(ServerInstance->Config->ServerName,parameter))
4624 ServerInstance->WriteOpers("*** Remote rehash initiated from server \002%s\002",ServerInstance->Config->ServerName);
4625 ServerInstance->RehashServer();
4628 ReadConfiguration(false);
4631 // note: the protocol does not allow direct umode +o except
4632 // via NICK with 8 params. sending OPERTYPE infers +o modechange
4634 virtual void OnOper(userrec* user, const std::string &opertype)
4638 std::deque<std::string> params;
4639 params.push_back(opertype);
4640 DoOneToMany(user->nick,"OPERTYPE",params);
4644 void OnLine(userrec* source, const std::string &host, bool adding, char linetype, long duration, const std::string &reason)
4646 if (IS_LOCAL(source))
4649 snprintf(type,8,"%cLINE",linetype);
4650 std::string stype = type;
4653 char sduration[MAXBUF];
4654 snprintf(sduration,MAXBUF,"%ld",duration);
4655 std::deque<std::string> params;
4656 params.push_back(host);
4657 params.push_back(sduration);
4658 params.push_back(":"+reason);
4659 DoOneToMany(source->nick,stype,params);
4663 std::deque<std::string> params;
4664 params.push_back(host);
4665 DoOneToMany(source->nick,stype,params);
4670 virtual void OnAddGLine(long duration, userrec* source, const std::string &reason, const std::string &hostmask)
4672 OnLine(source,hostmask,true,'G',duration,reason);
4675 virtual void OnAddZLine(long duration, userrec* source, const std::string &reason, const std::string &ipmask)
4677 OnLine(source,ipmask,true,'Z',duration,reason);
4680 virtual void OnAddQLine(long duration, userrec* source, const std::string &reason, const std::string &nickmask)
4682 OnLine(source,nickmask,true,'Q',duration,reason);
4685 virtual void OnAddELine(long duration, userrec* source, const std::string &reason, const std::string &hostmask)
4687 OnLine(source,hostmask,true,'E',duration,reason);
4690 virtual void OnDelGLine(userrec* source, const std::string &hostmask)
4692 OnLine(source,hostmask,false,'G',0,"");
4695 virtual void OnDelZLine(userrec* source, const std::string &ipmask)
4697 OnLine(source,ipmask,false,'Z',0,"");
4700 virtual void OnDelQLine(userrec* source, const std::string &nickmask)
4702 OnLine(source,nickmask,false,'Q',0,"");
4705 virtual void OnDelELine(userrec* source, const std::string &hostmask)
4707 OnLine(source,hostmask,false,'E',0,"");
4710 virtual void OnMode(userrec* user, void* dest, int target_type, const std::string &text)
4712 if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
4714 if (target_type == TYPE_USER)
4716 userrec* u = (userrec*)dest;
4717 std::deque<std::string> params;
4718 params.push_back(u->nick);
4719 params.push_back(text);
4720 DoOneToMany(user->nick,"MODE",params);
4724 chanrec* c = (chanrec*)dest;
4725 std::deque<std::string> params;
4726 params.push_back(c->name);
4727 params.push_back(text);
4728 DoOneToMany(user->nick,"MODE",params);
4733 virtual void OnSetAway(userrec* user)
4737 std::deque<std::string> params;
4738 params.push_back(":"+std::string(user->awaymsg));
4739 DoOneToMany(user->nick,"AWAY",params);
4743 virtual void OnCancelAway(userrec* user)
4747 std::deque<std::string> params;
4749 DoOneToMany(user->nick,"AWAY",params);
4753 virtual void ProtoSendMode(void* opaque, int target_type, void* target, const std::string &modeline)
4755 TreeSocket* s = (TreeSocket*)opaque;
4758 if (target_type == TYPE_USER)
4760 userrec* u = (userrec*)target;
4761 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" FMODE "+u->nick+" "+ConvToStr(u->age)+" "+modeline);
4765 chanrec* c = (chanrec*)target;
4766 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age)+" "+modeline);
4771 virtual void ProtoSendMetaData(void* opaque, int target_type, void* target, const std::string &extname, const std::string &extdata)
4773 TreeSocket* s = (TreeSocket*)opaque;
4776 if (target_type == TYPE_USER)
4778 userrec* u = (userrec*)target;
4779 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA "+u->nick+" "+extname+" :"+extdata);
4781 else if (target_type == TYPE_OTHER)
4783 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA * "+extname+" :"+extdata);
4785 else if (target_type == TYPE_CHANNEL)
4787 chanrec* c = (chanrec*)target;
4788 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA "+c->name+" "+extname+" :"+extdata);
4793 virtual void OnEvent(Event* event)
4795 if (event->GetEventID() == "send_metadata")
4797 std::deque<std::string>* params = (std::deque<std::string>*)event->GetData();
4798 if (params->size() < 3)
4800 (*params)[2] = ":" + (*params)[2];
4801 DoOneToMany(ServerInstance->Config->ServerName,"METADATA",*params);
4803 else if (event->GetEventID() == "send_mode")
4805 std::deque<std::string>* params = (std::deque<std::string>*)event->GetData();
4806 if (params->size() < 2)
4808 // Insert the TS value of the object, either userrec or chanrec
4810 userrec* a = ServerInstance->FindNick((*params)[0]);
4817 chanrec* a = ServerInstance->FindChan((*params)[0]);
4823 params->insert(params->begin() + 1,ConvToStr(ourTS));
4824 DoOneToMany(ServerInstance->Config->ServerName,"FMODE",*params);
4828 virtual ~ModuleSpanningTree()
4832 virtual Version GetVersion()
4834 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
4837 void Implements(char* List)
4839 List[I_OnPreCommand] = List[I_OnGetServerDescription] = List[I_OnUserInvite] = List[I_OnPostLocalTopicChange] = 1;
4840 List[I_OnWallops] = List[I_OnUserNotice] = List[I_OnUserMessage] = List[I_OnBackgroundTimer] = 1;
4841 List[I_OnUserJoin] = List[I_OnChangeHost] = List[I_OnChangeName] = List[I_OnUserPart] = List[I_OnUserConnect] = 1;
4842 List[I_OnUserQuit] = List[I_OnUserPostNick] = List[I_OnUserKick] = List[I_OnRemoteKill] = List[I_OnRehash] = 1;
4843 List[I_OnOper] = List[I_OnAddGLine] = List[I_OnAddZLine] = List[I_OnAddQLine] = List[I_OnAddELine] = 1;
4844 List[I_OnDelGLine] = List[I_OnDelZLine] = List[I_OnDelQLine] = List[I_OnDelELine] = List[I_ProtoSendMode] = List[I_OnMode] = 1;
4845 List[I_OnStats] = List[I_ProtoSendMetaData] = List[I_OnEvent] = List[I_OnSetAway] = List[I_OnCancelAway] = List[I_OnPostCommand] = 1;
4848 /* It is IMPORTANT that m_spanningtree is the last module in the chain
4849 * so that any activity it sees is FINAL, e.g. we arent going to send out
4850 * a NICK message before m_cloaking has finished putting the +x on the user,
4852 * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
4853 * the module call queue.
4855 Priority Prioritize()
4857 return PRIORITY_LAST;
4861 void DoFailOver(Link* x)
4863 TreeProtocolModule->DoFailOver(x);
4866 Link* FindLink(const std::string& name)
4868 return TreeProtocolModule->FindLink(name);
4871 class ModuleSpanningTreeFactory : public ModuleFactory
4874 ModuleSpanningTreeFactory()
4878 ~ModuleSpanningTreeFactory()
4882 virtual Module * CreateModule(InspIRCd* Me)
4884 TreeProtocolModule = new ModuleSpanningTree(Me);
4885 return TreeProtocolModule;
4891 extern "C" void * init_module( void )
4893 return new ModuleSpanningTreeFactory;