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 ServerInstance->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 ServerInstance->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 ServerInstance->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 ServerInstance->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 ServerInstance->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 ServerInstance->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 ServerInstance->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 ServerInstance->Log(DEBUG,"Send mode");
1324 this->Instance->SendMode(modelist, n+2, who);
1328 ServerInstance->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 ServerInstance->Log(DEBUG,"FMODE bounced intelligently, our TS less than theirs and the other server is NOT a uline.");
1447 ServerInstance->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 ServerInstance->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 = ServerInstance->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); // XXX
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 ServerInstance->Log(DEBUG,"Our our channel newer than theirs, accepting their modes");
1609 this->Instance->SendMode((const char**)mode_users,modectr,who);
1612 ServerInstance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",us->name,ourTS,TS);
1619 ServerInstance->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 ServerInstance->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 ServerInstance->Log(DEBUG,"Our our channel newer than theirs, accepting their modes");
1657 this->Instance->SendMode((const char**)mode_users,modectr,who);
1660 ServerInstance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",us->name,ourTS,TS);
1667 ServerInstance->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 ServerInstance->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 ServerInstance->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 ServerInstance->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 ServerInstance->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 ServerInstance->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 ServerInstance->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 ServerInstance->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 ServerInstance->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 ServerInstance->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 (!ServerInstance->Config->MOTD.size())
2062 par[1] = std::string("::")+ServerInstance->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("::")+ServerInstance->Config->ServerName+" 375 "+source->nick+" :"+ServerInstance->Config->ServerName+" message of the day";
2068 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2070 for (unsigned int i = 0; i < ServerInstance->Config->MOTD.size(); i++)
2072 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 372 "+source->nick+" :- "+ServerInstance->Config->MOTD[i];
2073 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2076 par[1] = std::string("::")+ServerInstance->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("::")+ServerInstance->Config->ServerName+" 256 "+source->nick+" :Administrative info for "+ServerInstance->Config->ServerName;
2109 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2111 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 257 "+source->nick+" :Name - "+ServerInstance->Config->AdminName;
2112 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2114 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 258 "+source->nick+" :Nickname - "+ServerInstance->Config->AdminNick;
2115 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2117 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 258 "+source->nick+" :E-Mail - "+ServerInstance->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 ServerInstance->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 = ServerInstance->XLines->add_zline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2402 ServerInstance->XLines->zline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2405 propogate = ServerInstance->XLines->add_qline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2406 ServerInstance->XLines->qline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2409 propogate = ServerInstance->XLines->add_eline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2410 ServerInstance->XLines->eline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2413 propogate = ServerInstance->XLines->add_gline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2414 ServerInstance->XLines->gline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2417 propogate = ServerInstance->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 ServerInstance->Log(DEBUG,"Applying lines...");
2443 ServerInstance->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 ServerInstance->Log(DEBUG,"In IDLE command");
2470 userrec* u = this->Instance->FindNick(prefix);
2474 ServerInstance->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 ServerInstance->Log(DEBUG,"Got IDLE");
2483 char signon[MAXBUF];
2485 ServerInstance->Log(DEBUG,"Sending back IDLE 3");
2486 snprintf(signon,MAXBUF,"%lu",(unsigned long)x->signon);
2487 snprintf(idle,MAXBUF,"%lu",(unsigned long)abs((x->idle_lastmsg)-time(NULL)));
2488 std::deque<std::string> par;
2489 par.push_back(prefix);
2490 par.push_back(signon);
2491 par.push_back(idle);
2492 // ours, we're done, pass it BACK
2493 DoOneToOne(params[0],"IDLE",par,u->server);
2497 // not ours pass it on
2498 DoOneToOne(prefix,"IDLE",params,x->server);
2501 else if (params.size() == 3)
2503 std::string who_did_the_whois = params[0];
2504 userrec* who_to_send_to = this->Instance->FindNick(who_did_the_whois);
2505 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
2507 ServerInstance->Log(DEBUG,"Got final IDLE");
2508 // an incoming reply to a whois we sent out
2509 std::string nick_whoised = prefix;
2510 unsigned long signon = atoi(params[1].c_str());
2511 unsigned long idle = atoi(params[2].c_str());
2512 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
2513 do_whois(this->Instance,who_to_send_to,u,signon,idle,nick_whoised.c_str());
2517 // not ours, pass it on
2518 DoOneToOne(prefix,"IDLE",params,who_to_send_to->server);
2525 bool Push(std::string prefix, std::deque<std::string> ¶ms)
2527 if (params.size() < 2)
2530 userrec* u = this->Instance->FindNick(params[0]);
2537 u->Write(params[1]);
2541 // continue the raw onwards
2542 params[1] = ":" + params[1];
2543 DoOneToOne(prefix,"PUSH",params,u->server);
2548 bool Time(std::string prefix, std::deque<std::string> ¶ms)
2550 // :source.server TIME remote.server sendernick
2551 // :remote.server TIME source.server sendernick TS
2552 if (params.size() == 2)
2554 // someone querying our time?
2555 if (this->Instance->Config->ServerName == params[0])
2557 userrec* u = this->Instance->FindNick(params[1]);
2561 snprintf(curtime,256,"%lu",(unsigned long)time(NULL));
2562 params.push_back(curtime);
2564 DoOneToOne(this->Instance->Config->ServerName,"TIME",params,params[0]);
2569 // not us, pass it on
2570 userrec* u = this->Instance->FindNick(params[1]);
2572 DoOneToOne(prefix,"TIME",params,params[0]);
2575 else if (params.size() == 3)
2577 // a response to a previous TIME
2578 userrec* u = this->Instance->FindNick(params[1]);
2579 if ((u) && (IS_LOCAL(u)))
2581 time_t rawtime = atol(params[2].c_str());
2582 struct tm * timeinfo;
2583 timeinfo = localtime(&rawtime);
2585 snprintf(tms,26,"%s",asctime(timeinfo));
2587 u->WriteServ("391 %s %s :%s",u->nick,prefix.c_str(),tms);
2592 DoOneToOne(prefix,"TIME",params,u->server);
2598 bool LocalPing(std::string prefix, std::deque<std::string> ¶ms)
2600 if (params.size() < 1)
2603 if (params.size() == 1)
2605 std::string stufftobounce = params[0];
2606 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" PONG "+stufftobounce);
2611 std::string forwardto = params[1];
2612 if (forwardto == this->Instance->Config->ServerName)
2614 // this is a ping for us, send back PONG to the requesting server
2615 params[1] = params[0];
2616 params[0] = forwardto;
2617 DoOneToOne(forwardto,"PONG",params,params[1]);
2621 // not for us, pass it on :)
2622 DoOneToOne(prefix,"PING",params,forwardto);
2628 bool RemoteServer(std::string prefix, std::deque<std::string> ¶ms)
2630 if (params.size() < 4)
2633 std::string servername = params[0];
2634 std::string password = params[1];
2635 // hopcount is not used for a remote server, we calculate this ourselves
2636 std::string description = params[3];
2637 TreeServer* ParentOfThis = FindServer(prefix);
2641 this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
2644 TreeServer* CheckDupe = FindServer(servername);
2647 this->WriteLine("ERROR :Server "+servername+" already exists!");
2648 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+servername+"\2 denied, already exists");
2651 TreeServer* Node = new TreeServer(this->Instance,servername,description,ParentOfThis,NULL);
2652 ParentOfThis->AddChild(Node);
2653 params[3] = ":" + params[3];
2654 DoOneToAllButSender(prefix,"SERVER",params,prefix);
2655 this->Instance->SNO->WriteToSnoMask('l',"Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
2659 bool Outbound_Reply_Server(std::deque<std::string> ¶ms)
2661 if (params.size() < 4)
2664 irc::string servername = params[0].c_str();
2665 std::string sname = params[0];
2666 std::string password = params[1];
2667 int hops = atoi(params[2].c_str());
2671 this->WriteLine("ERROR :Server too far away for authentication");
2672 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
2675 std::string description = params[3];
2676 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2678 if ((x->Name == servername) && (x->RecvPass == password))
2680 TreeServer* CheckDupe = FindServer(sname);
2683 this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
2684 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
2687 // Begin the sync here. this kickstarts the
2688 // other side, waiting in WAIT_AUTH_2 state,
2689 // into starting their burst, as it shows
2690 // that we're happy.
2691 this->LinkState = CONNECTED;
2692 // we should add the details of this server now
2693 // to the servers tree, as a child of the root
2695 TreeServer* Node = new TreeServer(this->Instance,sname,description,TreeRoot,this);
2696 TreeRoot->AddChild(Node);
2697 params[3] = ":" + params[3];
2698 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,sname);
2699 this->bursting = true;
2700 this->DoBurst(Node);
2704 this->WriteLine("ERROR :Invalid credentials");
2705 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
2709 bool Inbound_Server(std::deque<std::string> ¶ms)
2711 if (params.size() < 4)
2714 irc::string servername = params[0].c_str();
2715 std::string sname = params[0];
2716 std::string password = params[1];
2717 int hops = atoi(params[2].c_str());
2721 this->WriteLine("ERROR :Server too far away for authentication");
2722 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
2725 std::string description = params[3];
2726 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2728 if ((x->Name == servername) && (x->RecvPass == password))
2730 TreeServer* CheckDupe = FindServer(sname);
2733 this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
2734 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
2737 /* If the config says this link is encrypted, but the remote side
2738 * hasnt bothered to send the AES command before SERVER, then we
2739 * boot them off as we MUST have this connection encrypted.
2741 if ((x->EncryptionKey != "") && (!this->ctx_in))
2743 this->WriteLine("ERROR :This link requires AES encryption to be enabled. Plaintext connection refused.");
2744 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, remote server did not enable AES.");
2747 this->Instance->SNO->WriteToSnoMask('l',"Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] ("+description+")");
2748 this->InboundServerName = sname;
2749 this->InboundDescription = description;
2750 // this is good. Send our details: Our server name and description and hopcount of 0,
2751 // along with the sendpass from this block.
2752 this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc);
2753 // move to the next state, we are now waiting for THEM.
2754 this->LinkState = WAIT_AUTH_2;
2758 this->WriteLine("ERROR :Invalid credentials");
2759 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
2763 void Split(std::string line, std::deque<std::string> &n)
2766 irc::tokenstream tokens(line);
2768 while ((param = tokens.GetToken()) != "")
2773 bool ProcessLine(std::string line)
2775 std::deque<std::string> params;
2776 irc::string command;
2782 line = line.substr(0, line.find_first_of("\r\n"));
2784 ServerInstance->Log(DEBUG,"IN: %s", line.c_str());
2786 this->Split(line.c_str(),params);
2788 if ((params[0][0] == ':') && (params.size() > 1))
2790 prefix = params[0].substr(1);
2794 command = params[0].c_str();
2797 if ((!this->ctx_in) && (command == "AES"))
2799 std::string sserv = params[0];
2800 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2802 if ((x->EncryptionKey != "") && (x->Name == sserv))
2804 this->InitAES(x->EncryptionKey,sserv);
2810 else if ((this->ctx_in) && (command == "AES"))
2812 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());
2815 switch (this->LinkState)
2820 // Waiting for SERVER command from remote server. Server initiating
2821 // the connection sends the first SERVER command, listening server
2822 // replies with theirs if its happy, then if the initiator is happy,
2823 // it starts to send its net sync, which starts the merge, otherwise
2824 // it sends an ERROR.
2825 if (command == "PASS")
2827 /* Silently ignored */
2829 else if (command == "SERVER")
2831 return this->Inbound_Server(params);
2833 else if (command == "ERROR")
2835 return this->Error(params);
2837 else if (command == "USER")
2839 this->WriteLine("ERROR :Client connections to this port are prohibited.");
2842 else if (command == "CAPAB")
2844 return this->Capab(params);
2846 else if ((command == "U") || (command == "S"))
2848 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
2853 this->WriteLine("ERROR :Invalid command in negotiation phase.");
2858 // Waiting for start of other side's netmerge to say they liked our
2860 if (command == "SERVER")
2862 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
2866 else if ((command == "U") || (command == "S"))
2868 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
2871 else if (command == "BURST")
2875 /* If a time stamp is provided, try and check syncronization */
2876 time_t THEM = atoi(params[0].c_str());
2877 long delta = THEM-time(NULL);
2878 if ((delta < -600) || (delta > 600))
2880 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));
2881 this->WriteLine("ERROR :Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than ten minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!");
2884 else if ((delta < -60) || (delta > 60))
2886 this->Instance->SNO->WriteToSnoMask('l',"\2WARNING\2: Your clocks are out by %d seconds, please consider synching your clocks.",abs(delta));
2889 this->LinkState = CONNECTED;
2890 Node = new TreeServer(this->Instance,InboundServerName,InboundDescription,TreeRoot,this);
2891 TreeRoot->AddChild(Node);
2893 params.push_back(InboundServerName);
2894 params.push_back("*");
2895 params.push_back("1");
2896 params.push_back(":"+InboundDescription);
2897 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,InboundServerName);
2898 this->bursting = true;
2899 this->DoBurst(Node);
2901 else if (command == "ERROR")
2903 return this->Error(params);
2905 else if (command == "CAPAB")
2907 return this->Capab(params);
2912 this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
2916 if (command == "SERVER")
2918 // another server we connected to, which was in WAIT_AUTH_1 state,
2919 // has just sent us their credentials. If we get this far, theyre
2920 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
2921 // if we're happy with this, we should send our netburst which
2922 // kickstarts the merge.
2923 return this->Outbound_Reply_Server(params);
2925 else if (command == "ERROR")
2927 return this->Error(params);
2931 // This is the 'authenticated' state, when all passwords
2932 // have been exchanged and anything past this point is taken
2937 std::string direction = prefix;
2938 userrec* t = this->Instance->FindNick(prefix);
2941 direction = t->server;
2943 TreeServer* route_back_again = BestRouteTo(direction);
2944 if ((!route_back_again) || (route_back_again->GetSocket() != this))
2946 if (route_back_again)
2947 ServerInstance->Log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
2952 * When there is activity on the socket, reset the ping counter so
2953 * that we're not wasting bandwidth pinging an active server.
2955 route_back_again->SetNextPingTime(time(NULL) + 60);
2956 route_back_again->SetPingFlag();
2959 if (command == "SVSMODE")
2961 /* Services expects us to implement
2962 * SVSMODE. In inspircd its the same as
2967 std::string target = "";
2968 /* Yes, know, this is a mess. Its reasonably fast though as we're
2969 * working with std::string here.
2971 if ((command == "NICK") && (params.size() > 1))
2973 return this->IntroduceClient(prefix,params);
2975 else if (command == "FJOIN")
2977 return this->ForceJoin(prefix,params);
2979 else if (command == "STATS")
2981 return this->Stats(prefix, params);
2983 else if (command == "MOTD")
2985 return this->Motd(prefix, params);
2987 else if (command == "ADMIN")
2989 return this->Admin(prefix, params);
2991 else if (command == "SERVER")
2993 return this->RemoteServer(prefix,params);
2995 else if (command == "ERROR")
2997 return this->Error(params);
2999 else if (command == "OPERTYPE")
3001 return this->OperType(prefix,params);
3003 else if (command == "FMODE")
3005 return this->ForceMode(prefix,params);
3007 else if (command == "KILL")
3009 return this->RemoteKill(prefix,params);
3011 else if (command == "FTOPIC")
3013 return this->ForceTopic(prefix,params);
3015 else if (command == "REHASH")
3017 return this->RemoteRehash(prefix,params);
3019 else if (command == "METADATA")
3021 return this->MetaData(prefix,params);
3023 else if (command == "PING")
3026 * We just got a ping from a server that's bursting.
3027 * This can't be right, so set them to not bursting, and
3028 * apply their lines.
3032 this->bursting = false;
3033 ServerInstance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
3037 prefix = this->GetName();
3039 return this->LocalPing(prefix,params);
3041 else if (command == "PONG")
3044 * We just got a pong from a server that's bursting.
3045 * This can't be right, so set them to not bursting, and
3046 * apply their lines.
3050 this->bursting = false;
3051 ServerInstance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
3055 prefix = this->GetName();
3057 return this->LocalPong(prefix,params);
3059 else if (command == "VERSION")
3061 return this->ServerVersion(prefix,params);
3063 else if (command == "FHOST")
3065 return this->ChangeHost(prefix,params);
3067 else if (command == "FNAME")
3069 return this->ChangeName(prefix,params);
3071 else if (command == "ADDLINE")
3073 return this->AddLine(prefix,params);
3075 else if (command == "SVSNICK")
3079 prefix = this->GetName();
3081 return this->ForceNick(prefix,params);
3083 else if (command == "IDLE")
3085 return this->Whois(prefix,params);
3087 else if (command == "PUSH")
3089 return this->Push(prefix,params);
3091 else if (command == "TIME")
3093 return this->Time(prefix,params);
3095 else if ((command == "KICK") && (IsServer(prefix)))
3097 std::string sourceserv = this->myhost;
3098 if (params.size() == 3)
3100 userrec* user = this->Instance->FindNick(params[1]);
3101 chanrec* chan = this->Instance->FindChan(params[0]);
3104 if (!chan->ServerKickUser(user, params[2].c_str(), false))
3105 /* Yikes, the channels gone! */
3109 if (this->InboundServerName != "")
3111 sourceserv = this->InboundServerName;
3113 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
3115 else if (command == "SVSJOIN")
3119 prefix = this->GetName();
3121 return this->ServiceJoin(prefix,params);
3123 else if (command == "SQUIT")
3125 if (params.size() == 2)
3127 this->Squit(FindServer(params[0]),params[1]);
3131 else if (command == "ENDBURST")
3133 this->bursting = false;
3134 ServerInstance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
3135 std::string sourceserv = this->myhost;
3136 if (this->InboundServerName != "")
3138 sourceserv = this->InboundServerName;
3140 this->Instance->SNO->WriteToSnoMask('l',"Received end of netburst from \2%s\2",sourceserv.c_str());
3145 // not a special inter-server command.
3146 // Emulate the actual user doing the command,
3147 // this saves us having a huge ugly parser.
3148 userrec* who = this->Instance->FindNick(prefix);
3149 std::string sourceserv = this->myhost;
3150 if (this->InboundServerName != "")
3152 sourceserv = this->InboundServerName;
3156 if ((command == "NICK") && (params.size() > 0))
3158 /* On nick messages, check that the nick doesnt
3159 * already exist here. If it does, kill their copy,
3162 userrec* x = this->Instance->FindNick(params[0]);
3163 if ((x) && (x != who))
3165 std::deque<std::string> p;
3166 p.push_back(params[0]);
3167 p.push_back("Nickname collision ("+prefix+" -> "+params[0]+")");
3168 DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
3170 p.push_back(prefix);
3171 p.push_back("Nickname collision");
3172 DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
3173 userrec::QuitUser(this->Instance,x,"Nickname collision ("+prefix+" -> "+params[0]+")");
3174 userrec* y = this->Instance->FindNick(prefix);
3177 userrec::QuitUser(this->Instance,y,"Nickname collision");
3179 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
3183 target = who->server;
3184 const char* strparams[127];
3185 for (unsigned int q = 0; q < params.size(); q++)
3187 strparams[q] = params[q].c_str();
3189 switch (this->Instance->CallCommandHandler(command.c_str(), strparams, params.size(), who))
3192 this->WriteLine("ERROR :Unrecognised command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules");
3199 /* CMD_SUCCESS and CMD_USER_DELETED fall through here */
3205 // its not a user. Its either a server, or somethings screwed up.
3206 if (IsServer(prefix))
3208 target = this->Instance->Config->ServerName;
3212 ServerInstance->Log(DEBUG,"Command with unknown origin '%s'",prefix.c_str());
3216 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
3225 virtual std::string GetName()
3227 std::string sourceserv = this->myhost;
3228 if (this->InboundServerName != "")
3230 sourceserv = this->InboundServerName;
3235 virtual void OnTimeout()
3237 if (this->LinkState == CONNECTING)
3239 this->Instance->SNO->WriteToSnoMask('l',"CONNECT: Connection to \002"+myhost+"\002 timed out.");
3240 Link* MyLink = FindLink(myhost);
3246 virtual void OnClose()
3248 // Connection closed.
3249 // If the connection is fully up (state CONNECTED)
3250 // then propogate a netsplit to all peers.
3251 std::string quitserver = this->myhost;
3252 if (this->InboundServerName != "")
3254 quitserver = this->InboundServerName;
3256 TreeServer* s = FindServer(quitserver);
3259 Squit(s,"Remote host closed the connection");
3261 this->Instance->SNO->WriteToSnoMask('l',"Connection to '\2%s\2' failed.",quitserver.c_str());
3264 virtual int OnIncomingConnection(int newsock, char* ip)
3266 /* To prevent anyone from attempting to flood opers/DDoS by connecting to the server port,
3267 * or discovering if this port is the server port, we don't allow connections from any
3268 * IPs for which we don't have a link block.
3272 found = (std::find(ValidIPs.begin(), ValidIPs.end(), ip) != ValidIPs.end());
3275 for (vector<std::string>::iterator i = ValidIPs.begin(); i != ValidIPs.end(); i++)
3276 if (MatchCIDR(ip, (*i).c_str()))
3281 this->Instance->SNO->WriteToSnoMask('l',"Server connection from %s denied (no link blocks with that IP address)", ip);
3286 TreeSocket* s = new TreeSocket(this->Instance, newsock, ip);
3287 s = s; /* Whinge whinge whinge, thats all GCC ever does. */
3292 /** This class is used to resolve server hostnames during /connect and autoconnect.
3293 * As of 1.1, the resolver system is seperated out from InspSocket, so we must do this
3294 * resolver step first ourselves if we need it. This is totally nonblocking, and will
3295 * callback to OnLookupComplete or OnError when completed. Once it has completed we
3296 * will have an IP address which we can then use to continue our connection.
3298 class ServernameResolver : public Resolver
3301 /** A copy of the Link tag info for what we're connecting to.
3302 * We take a copy, rather than using a pointer, just in case the
3303 * admin takes the tag away and rehashes while the domain is resolving.
3307 ServernameResolver(InspIRCd* Instance, const std::string &hostname, Link x) : Resolver(Instance, hostname, DNS_QUERY_FORWARD), MyLink(x)
3309 /* Nothing in here, folks */
3312 void OnLookupComplete(const std::string &result)
3314 /* Initiate the connection, now that we have an IP to use.
3315 * Passing a hostname directly to InspSocket causes it to
3316 * just bail and set its FD to -1.
3318 TreeServer* CheckDupe = FindServer(MyLink.Name.c_str());
3319 if (!CheckDupe) /* Check that nobody tried to connect it successfully while we were resolving */
3321 TreeSocket* newsocket = new TreeSocket(ServerInstance, result,MyLink.Port,false,10,MyLink.Name.c_str());
3322 if (newsocket->GetFd() > -1)
3328 /* Something barfed, show the opers */
3329 ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",MyLink.Name.c_str(),strerror(errno));
3331 DoFailOver(&MyLink);
3336 void OnError(ResolverError e, const std::string &errormessage)
3339 ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: Unable to resolve hostname - %s",MyLink.Name.c_str(),errormessage.c_str());
3340 DoFailOver(&MyLink);
3344 class SecurityIPResolver : public Resolver
3349 SecurityIPResolver(InspIRCd* Instance, const std::string &hostname, Link x) : Resolver(Instance, hostname, DNS_QUERY_FORWARD), MyLink(x)
3353 void OnLookupComplete(const std::string &result)
3355 ServerInstance->Log(DEBUG,"Security IP cache: Adding IP address '%s' for Link '%s'",result.c_str(),MyLink.Name.c_str());
3356 ValidIPs.push_back(result);
3359 void OnError(ResolverError e, const std::string &errormessage)
3361 ServerInstance->Log(DEBUG,"Could not resolve IP associated with Link '%s': %s",MyLink.Name.c_str(),errormessage.c_str());
3365 void AddThisServer(TreeServer* server, std::deque<TreeServer*> &list)
3367 for (unsigned int c = 0; c < list.size(); c++)
3369 if (list[c] == server)
3374 list.push_back(server);
3377 // returns a list of DIRECT servernames for a specific channel
3378 void GetListOfServersForChannel(chanrec* c, std::deque<TreeServer*> &list)
3380 CUList *ulist = c->GetUsers();
3381 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
3383 if (i->second->GetFd() < 0)
3385 TreeServer* best = BestRouteTo(i->second->server);
3387 AddThisServer(best,list);
3393 bool DoOneToAllButSenderRaw(std::string data, std::string omit, std::string prefix, irc::string command, std::deque<std::string> ¶ms)
3395 TreeServer* omitroute = BestRouteTo(omit);
3396 if ((command == "NOTICE") || (command == "PRIVMSG"))
3398 if (params.size() >= 2)
3401 if ((*(params[0].c_str()) == '@') || (*(params[0].c_str()) == '%') || (*(params[0].c_str()) == '+'))
3403 params[0] = params[0].substr(1, params[0].length()-1);
3405 if ((*(params[0].c_str()) != '#') && (*(params[0].c_str()) != '$'))
3407 // special routing for private messages/notices
3408 userrec* d = ServerInstance->FindNick(params[0]);
3411 std::deque<std::string> par;
3412 par.push_back(params[0]);
3413 par.push_back(":"+params[1]);
3414 DoOneToOne(prefix,command.c_str(),par,d->server);
3418 else if (*(params[0].c_str()) == '$')
3420 std::deque<std::string> par;
3421 par.push_back(params[0]);
3422 par.push_back(":"+params[1]);
3423 DoOneToAllButSender(prefix,command.c_str(),par,omitroute->GetName());
3428 ServerInstance->Log(DEBUG,"Channel privmsg going to chan %s",params[0].c_str());
3429 chanrec* c = ServerInstance->FindChan(params[0]);
3432 std::deque<TreeServer*> list;
3433 GetListOfServersForChannel(c,list);
3434 ServerInstance->Log(DEBUG,"Got a list of %d servers",list.size());
3435 unsigned int lsize = list.size();
3436 for (unsigned int i = 0; i < lsize; i++)
3438 TreeSocket* Sock = list[i]->GetSocket();
3439 if ((Sock) && (list[i]->GetName() != omit) && (omitroute != list[i]))
3441 ServerInstance->Log(DEBUG,"Writing privmsg to server %s",list[i]->GetName().c_str());
3442 Sock->WriteLine(data);
3450 unsigned int items = TreeRoot->ChildCount();
3451 for (unsigned int x = 0; x < items; x++)
3453 TreeServer* Route = TreeRoot->GetChild(x);
3454 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
3456 TreeSocket* Sock = Route->GetSocket();
3458 Sock->WriteLine(data);
3464 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string omit)
3466 TreeServer* omitroute = BestRouteTo(omit);
3467 std::string FullLine = ":" + prefix + " " + command;
3468 unsigned int words = params.size();
3469 for (unsigned int x = 0; x < words; x++)
3471 FullLine = FullLine + " " + params[x];
3473 unsigned int items = TreeRoot->ChildCount();
3474 for (unsigned int x = 0; x < items; x++)
3476 TreeServer* Route = TreeRoot->GetChild(x);
3477 // Send the line IF:
3478 // The route has a socket (its a direct connection)
3479 // The route isnt the one to be omitted
3480 // The route isnt the path to the one to be omitted
3481 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
3483 TreeSocket* Sock = Route->GetSocket();
3485 Sock->WriteLine(FullLine);
3491 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> ¶ms)
3493 std::string FullLine = ":" + prefix + " " + command;
3494 unsigned int words = params.size();
3495 for (unsigned int x = 0; x < words; x++)
3497 FullLine = FullLine + " " + params[x];
3499 unsigned int items = TreeRoot->ChildCount();
3500 for (unsigned int x = 0; x < items; x++)
3502 TreeServer* Route = TreeRoot->GetChild(x);
3503 if (Route && Route->GetSocket())
3505 TreeSocket* Sock = Route->GetSocket();
3507 Sock->WriteLine(FullLine);
3513 bool DoOneToMany(const char* prefix, const char* command, std::deque<std::string> ¶ms)
3515 std::string spfx = prefix;
3516 std::string scmd = command;
3517 return DoOneToMany(spfx, scmd, params);
3520 bool DoOneToAllButSender(const char* prefix, const char* command, std::deque<std::string> ¶ms, std::string omit)
3522 std::string spfx = prefix;
3523 std::string scmd = command;
3524 return DoOneToAllButSender(spfx, scmd, params, omit);
3527 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string target)
3529 TreeServer* Route = BestRouteTo(target);
3532 std::string FullLine = ":" + prefix + " " + command;
3533 unsigned int words = params.size();
3534 for (unsigned int x = 0; x < words; x++)
3536 FullLine = FullLine + " " + params[x];
3538 if (Route && Route->GetSocket())
3540 TreeSocket* Sock = Route->GetSocket();
3542 Sock->WriteLine(FullLine);
3552 std::vector<TreeSocket*> Bindings;
3554 void ReadConfiguration(bool rebind)
3556 Conf = new ConfigReader(ServerInstance);
3559 for (int j =0; j < Conf->Enumerate("bind"); j++)
3561 std::string Type = Conf->ReadValue("bind","type",j);
3562 std::string IP = Conf->ReadValue("bind","address",j);
3563 long Port = Conf->ReadInteger("bind","port",j,true);
3564 if (Type == "servers")
3570 TreeSocket* listener = new TreeSocket(ServerInstance, IP.c_str(),Port,true,10);
3571 if (listener->GetState() == I_LISTENING)
3573 Bindings.push_back(listener);
3577 ServerInstance->Log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port %d",Port);
3584 FlatLinks = Conf->ReadFlag("options","flatlinks",0);
3585 HideULines = Conf->ReadFlag("options","hideulines",0);
3588 for (int j =0; j < Conf->Enumerate("link"); j++)
3591 std::string Allow = Conf->ReadValue("link","allowmask",j);
3592 L.Name = (Conf->ReadValue("link","name",j)).c_str();
3593 L.IPAddr = Conf->ReadValue("link","ipaddr",j);
3594 L.FailOver = Conf->ReadValue("link","failover",j).c_str();
3595 L.Port = Conf->ReadInteger("link","port",j,true);
3596 L.SendPass = Conf->ReadValue("link","sendpass",j);
3597 L.RecvPass = Conf->ReadValue("link","recvpass",j);
3598 L.AutoConnect = Conf->ReadInteger("link","autoconnect",j,true);
3599 L.EncryptionKey = Conf->ReadValue("link","encryptionkey",j);
3600 L.HiddenFromStats = Conf->ReadFlag("link","hidden",j);
3601 L.NextConnectTime = time(NULL) + L.AutoConnect;
3602 /* Bugfix by brain, do not allow people to enter bad configurations */
3603 if (L.Name != ServerInstance->Config->ServerName)
3605 if ((L.IPAddr != "") && (L.RecvPass != "") && (L.SendPass != "") && (L.Name != "") && (L.Port))
3607 ValidIPs.push_back(L.IPAddr);
3610 ValidIPs.push_back(Allow);
3612 /* Needs resolving */
3614 if (insp_aton(L.IPAddr.c_str(), &binip) < 1)
3618 SecurityIPResolver* sr = new SecurityIPResolver(ServerInstance, L.IPAddr, L);
3619 ServerInstance->AddResolver(sr);
3621 catch (ModuleException& e)
3623 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
3627 LinkBlocks.push_back(L);
3628 ServerInstance->Log(DEBUG,"m_spanningtree: Read server %s with host %s:%d",L.Name.c_str(),L.IPAddr.c_str(),L.Port);
3634 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', IP address not defined!",L.Name.c_str());
3636 else if (L.RecvPass == "")
3638 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', recvpass not defined!",L.Name.c_str());
3640 else if (L.SendPass == "")
3642 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', sendpass not defined!",L.Name.c_str());
3644 else if (L.Name == "")
3646 ServerInstance->Log(DEFAULT,"Invalid configuration, link tag without a name!");
3650 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', no port specified!",L.Name.c_str());
3656 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', link tag has the same server name as the local server!",L.Name.c_str());
3663 class ModuleSpanningTree : public Module
3665 std::vector<TreeSocket*> Bindings;
3668 unsigned int max_local;
3669 unsigned int max_global;
3670 cmd_rconnect* command_rconnect;
3674 ModuleSpanningTree(InspIRCd* Me)
3675 : Module::Module(Me), max_local(0), max_global(0)
3680 ::ServerInstance = Me;
3682 // Create the root of the tree
3683 TreeRoot = new TreeServer(ServerInstance, ServerInstance->Config->ServerName, ServerInstance->Config->ServerDesc);
3685 ReadConfiguration(true);
3687 command_rconnect = new cmd_rconnect(ServerInstance, this);
3688 ServerInstance->AddCommand(command_rconnect);
3691 void ShowLinks(TreeServer* Current, userrec* user, int hops)
3693 std::string Parent = TreeRoot->GetName();
3694 if (Current->GetParent())
3696 Parent = Current->GetParent()->GetName();
3698 for (unsigned int q = 0; q < Current->ChildCount(); q++)
3700 if ((HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str())))
3704 ShowLinks(Current->GetChild(q),user,hops+1);
3709 ShowLinks(Current->GetChild(q),user,hops+1);
3712 /* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */
3713 if ((HideULines) && (ServerInstance->ULine(Current->GetName().c_str())) && (!*user->oper))
3715 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());
3718 int CountLocalServs()
3720 return TreeRoot->ChildCount();
3725 return serverlist.size();
3728 void HandleLinks(const char** parameters, int pcnt, userrec* user)
3730 ShowLinks(TreeRoot,user,0);
3731 user->WriteServ("365 %s * :End of /LINKS list.",user->nick);
3735 void HandleLusers(const char** parameters, int pcnt, userrec* user)
3737 unsigned int n_users = ServerInstance->UserCount();
3739 /* Only update these when someone wants to see them, more efficient */
3740 if ((unsigned int)ServerInstance->LocalUserCount() > max_local)
3741 max_local = ServerInstance->LocalUserCount();
3742 if (n_users > max_global)
3743 max_global = n_users;
3745 user->WriteServ("251 %s :There are %d users and %d invisible on %d servers",user->nick,n_users-ServerInstance->InvisibleUserCount(),ServerInstance->InvisibleUserCount(),this->CountServs());
3746 if (ServerInstance->OperCount())
3747 user->WriteServ("252 %s %d :operator(s) online",user->nick,ServerInstance->OperCount());
3748 if (ServerInstance->UnregisteredUserCount())
3749 user->WriteServ("253 %s %d :unknown connections",user->nick,ServerInstance->UnregisteredUserCount());
3750 if (ServerInstance->ChannelCount())
3751 user->WriteServ("254 %s %d :channels formed",user->nick,ServerInstance->ChannelCount());
3752 user->WriteServ("254 %s :I have %d clients and %d servers",user->nick,ServerInstance->LocalUserCount(),this->CountLocalServs());
3753 user->WriteServ("265 %s :Current Local Users: %d Max: %d",user->nick,ServerInstance->LocalUserCount(),max_local);
3754 user->WriteServ("266 %s :Current Global Users: %d Max: %d",user->nick,n_users,max_global);
3758 // WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS.
3760 void ShowMap(TreeServer* Current, userrec* user, int depth, char matrix[128][80], float &totusers, float &totservers)
3764 for (int t = 0; t < depth; t++)
3766 matrix[line][t] = ' ';
3769 // For Aligning, we need to work out exactly how deep this thing is, and produce
3770 // a 'Spacer' String to compensate.
3773 memset(spacer,' ',40);
3774 if ((40 - Current->GetName().length() - depth) > 1) {
3775 spacer[40 - Current->GetName().length() - depth] = '\0';
3784 if (ServerInstance->clientlist.size() == 0) {
3785 // If there are no users, WHO THE HELL DID THE /MAP?!?!?!
3790 percent = ((float)Current->GetUserCount() / (float)ServerInstance->clientlist.size()) * 100;
3792 snprintf(text, 80, "%s %s%5d [%5.2f%%]", Current->GetName().c_str(), spacer, Current->GetUserCount(), percent);
3793 totusers += Current->GetUserCount();
3795 strlcpy(&matrix[line][depth],text,80);
3797 for (unsigned int q = 0; q < Current->ChildCount(); q++)
3799 if ((HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str())))
3803 ShowMap(Current->GetChild(q),user,(FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers);
3808 ShowMap(Current->GetChild(q),user,(FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers);
3814 int HandleMotd(const char** parameters, int pcnt, userrec* user)
3818 /* Remote MOTD, the server is within the 1st parameter */
3819 std::deque<std::string> params;
3820 params.push_back(parameters[0]);
3822 /* Send it out remotely, generate no reply yet */
3823 TreeServer* s = FindServerMask(parameters[0]);
3826 DoOneToOne(user->nick, "MOTD", params, s->GetName());
3830 user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]);
3837 int HandleAdmin(const char** parameters, int pcnt, userrec* user)
3841 /* Remote ADMIN, the server is within the 1st parameter */
3842 std::deque<std::string> params;
3843 params.push_back(parameters[0]);
3845 /* Send it out remotely, generate no reply yet */
3846 TreeServer* s = FindServerMask(parameters[0]);
3849 DoOneToOne(user->nick, "ADMIN", params, s->GetName());
3853 user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]);
3860 int HandleStats(const char** parameters, int pcnt, userrec* user)
3864 /* Remote STATS, the server is within the 2nd parameter */
3865 std::deque<std::string> params;
3866 params.push_back(parameters[0]);
3867 params.push_back(parameters[1]);
3868 /* Send it out remotely, generate no reply yet */
3869 TreeServer* s = FindServerMask(parameters[1]);
3872 params[1] = s->GetName();
3873 DoOneToOne(user->nick, "STATS", params, s->GetName());
3877 user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]);
3884 // Ok, prepare to be confused.
3885 // After much mulling over how to approach this, it struck me that
3886 // the 'usual' way of doing a /MAP isnt the best way. Instead of
3887 // keeping track of a ton of ascii characters, and line by line
3888 // under recursion working out where to place them using multiplications
3889 // and divisons, we instead render the map onto a backplane of characters
3890 // (a character matrix), then draw the branches as a series of "L" shapes
3891 // from the nodes. This is not only friendlier on CPU it uses less stack.
3893 void HandleMap(const char** parameters, int pcnt, userrec* user)
3895 // This array represents a virtual screen which we will
3896 // "scratch" draw to, as the console device of an irc
3897 // client does not provide for a proper terminal.
3899 float totservers = 0;
3900 char matrix[128][80];
3901 for (unsigned int t = 0; t < 128; t++)
3903 matrix[t][0] = '\0';
3906 // The only recursive bit is called here.
3907 ShowMap(TreeRoot,user,0,matrix,totusers,totservers);
3908 // Process each line one by one. The algorithm has a limit of
3909 // 128 servers (which is far more than a spanning tree should have
3910 // anyway, so we're ok). This limit can be raised simply by making
3911 // the character matrix deeper, 128 rows taking 10k of memory.
3912 for (int l = 1; l < line; l++)
3914 // scan across the line looking for the start of the
3915 // servername (the recursive part of the algorithm has placed
3916 // the servers at indented positions depending on what they
3918 int first_nonspace = 0;
3919 while (matrix[l][first_nonspace] == ' ')
3924 // Draw the `- (corner) section: this may be overwritten by
3925 // another L shape passing along the same vertical pane, becoming
3926 // a |- (branch) section instead.
3927 matrix[l][first_nonspace] = '-';
3928 matrix[l][first_nonspace-1] = '`';
3930 // Draw upwards until we hit the parent server, causing possibly
3931 // other corners (`-) to become branches (|-)
3932 while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`'))
3934 matrix[l2][first_nonspace-1] = '|';
3938 // dump the whole lot to the user. This is the easy bit, honest.
3939 for (int t = 0; t < line; t++)
3941 user->WriteServ("006 %s :%s",user->nick,&matrix[t][0]);
3943 float avg_users = totusers / totservers;
3944 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);
3945 user->WriteServ("007 %s :End of /MAP",user->nick);
3949 int HandleSquit(const char** parameters, int pcnt, userrec* user)
3951 TreeServer* s = FindServerMask(parameters[0]);
3956 user->WriteServ("NOTICE %s :*** SQUIT: Foolish mortal, you cannot make a server SQUIT itself! (%s matches local server name)",user->nick,parameters[0]);
3959 TreeSocket* sock = s->GetSocket();
3962 ServerInstance->Log(DEBUG,"Splitting server %s",s->GetName().c_str());
3963 ServerInstance->SNO->WriteToSnoMask('l',"SQUIT: Server \002%s\002 removed from network by %s",parameters[0],user->nick);
3964 sock->Squit(s,"Server quit by "+std::string(user->nick)+"!"+std::string(user->ident)+"@"+std::string(user->host));
3965 ServerInstance->SE->DelFd(sock);
3971 user->WriteServ("NOTICE %s :*** SQUIT: The server \002%s\002 is not directly connected.",user->nick,parameters[0]);
3976 user->WriteServ("NOTICE %s :*** SQUIT: The server \002%s\002 does not exist on the network.",user->nick,parameters[0]);
3981 int HandleTime(const char** parameters, int pcnt, userrec* user)
3983 if ((IS_LOCAL(user)) && (pcnt))
3985 TreeServer* found = FindServerMask(parameters[0]);
3988 // we dont' override for local server
3989 if (found == TreeRoot)
3992 std::deque<std::string> params;
3993 params.push_back(found->GetName());
3994 params.push_back(user->nick);
3995 DoOneToOne(ServerInstance->Config->ServerName,"TIME",params,found->GetName());
3999 user->WriteServ("402 %s %s :No such server",user->nick,parameters[0]);
4005 int HandleRemoteWhois(const char** parameters, int pcnt, userrec* user)
4007 if ((IS_LOCAL(user)) && (pcnt > 1))
4009 userrec* remote = ServerInstance->FindNick(parameters[1]);
4010 if ((remote) && (remote->GetFd() < 0))
4012 std::deque<std::string> params;
4013 params.push_back(parameters[1]);
4014 DoOneToOne(user->nick,"IDLE",params,remote->server);
4019 user->WriteServ("401 %s %s :No such nick/channel",user->nick, parameters[1]);
4020 user->WriteServ("318 %s %s :End of /WHOIS list.",user->nick, parameters[1]);
4027 void DoPingChecks(time_t curtime)
4029 for (unsigned int j = 0; j < TreeRoot->ChildCount(); j++)
4031 TreeServer* serv = TreeRoot->GetChild(j);
4032 TreeSocket* sock = serv->GetSocket();
4035 if (curtime >= serv->NextPingTime())
4037 if (serv->AnsweredLastPing())
4039 sock->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" PING "+serv->GetName());
4040 serv->SetNextPingTime(curtime + 60);
4044 // they didnt answer, boot them
4045 ServerInstance->SNO->WriteToSnoMask('l',"Server \002%s\002 pinged out",serv->GetName().c_str());
4046 sock->Squit(serv,"Ping timeout");
4047 ServerInstance->SE->DelFd(sock);
4057 void ConnectServer(Link* x)
4061 /* Do we already have an IP? If so, no need to resolve it. */
4062 if (insp_aton(x->IPAddr.c_str(), &binip) > 0)
4064 TreeSocket* newsocket = new TreeSocket(ServerInstance, x->IPAddr,x->Port,false,10,x->Name.c_str());
4065 if (newsocket->GetFd() > -1)
4067 /* Handled automatically on success */
4071 ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(),strerror(errno));
4073 this->DoFailOver(x);
4080 ServernameResolver* snr = new ServernameResolver(ServerInstance,x->IPAddr, *x);
4081 ServerInstance->AddResolver(snr);
4083 catch (ModuleException& e)
4085 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
4086 this->DoFailOver(x);
4091 void DoFailOver(Link* x)
4093 if (x->FailOver.length())
4095 if (x->FailOver == x->Name)
4097 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());
4100 Link* TryThisOne = this->FindLink(x->FailOver.c_str());
4103 ServerInstance->SNO->WriteToSnoMask('l',"FAILOVER: Trying failover link for \002%s\002: \002%s\002...", x->Name.c_str(), TryThisOne->Name.c_str());
4104 ConnectServer(TryThisOne);
4108 ServerInstance->SNO->WriteToSnoMask('l',"FAILOVER: Invalid failover server specified for server \002%s\002, will not follow!", x->Name.c_str());
4113 Link* FindLink(const std::string& name)
4115 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
4117 if (ServerInstance->MatchText(x->Name.c_str(), name.c_str()))
4125 void AutoConnectServers(time_t curtime)
4127 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
4129 if ((x->AutoConnect) && (curtime >= x->NextConnectTime))
4131 ServerInstance->Log(DEBUG,"Auto-Connecting %s",x->Name.c_str());
4132 x->NextConnectTime = curtime + x->AutoConnect;
4133 TreeServer* CheckDupe = FindServer(x->Name.c_str());
4134 if (x->FailOver.length())
4136 TreeServer* CheckFailOver = FindServer(x->FailOver.c_str());
4139 /* The failover for this server is currently a member of the network.
4140 * The failover probably succeeded, where the main link did not.
4141 * Don't try the main link until the failover is gone again.
4148 // an autoconnected server is not connected. Check if its time to connect it
4149 ServerInstance->SNO->WriteToSnoMask('l',"AUTOCONNECT: Auto-connecting server \002%s\002 (%lu seconds until next attempt)",x->Name.c_str(),x->AutoConnect);
4150 this->ConnectServer(&(*x));
4156 int HandleVersion(const char** parameters, int pcnt, userrec* user)
4158 // we've already checked if pcnt > 0, so this is safe
4159 TreeServer* found = FindServerMask(parameters[0]);
4162 std::string Version = found->GetVersion();
4163 user->WriteServ("351 %s :%s",user->nick,Version.c_str());
4164 if (found == TreeRoot)
4166 std::stringstream out(ServerInstance->Config->data005);
4167 std::string token = "";
4168 std::string line5 = "";
4169 int token_counter = 0;
4174 line5 = line5 + token + " ";
4177 if ((token_counter >= 13) || (out.eof() == true))
4179 user->WriteServ("005 %s %s:are supported by this server",user->nick,line5.c_str());
4188 user->WriteServ("402 %s %s :No such server",user->nick,parameters[0]);
4193 int HandleConnect(const char** parameters, int pcnt, userrec* user)
4195 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
4197 if (ServerInstance->MatchText(x->Name.c_str(),parameters[0]))
4199 TreeServer* CheckDupe = FindServer(x->Name.c_str());
4202 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);
4203 ConnectServer(&(*x));
4208 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());
4213 user->WriteServ("NOTICE %s :*** CONNECT: No server matching \002%s\002 could be found in the config file.",user->nick,parameters[0]);
4217 virtual int OnStats(char statschar, userrec* user, string_list &results)
4219 if (statschar == 'c')
4221 for (unsigned int i = 0; i < LinkBlocks.size(); i++)
4223 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');
4224 results.push_back(std::string(ServerInstance->Config->ServerName)+" 244 "+user->nick+" H * * "+LinkBlocks[i].Name.c_str());
4226 results.push_back(std::string(ServerInstance->Config->ServerName)+" 219 "+user->nick+" "+statschar+" :End of /STATS report");
4227 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);
4233 virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, bool validated)
4235 /* If the command doesnt appear to be valid, we dont want to mess with it. */
4239 if (command == "CONNECT")
4241 return this->HandleConnect(parameters,pcnt,user);
4243 else if (command == "STATS")
4245 return this->HandleStats(parameters,pcnt,user);
4247 else if (command == "MOTD")
4249 return this->HandleMotd(parameters,pcnt,user);
4251 else if (command == "ADMIN")
4253 return this->HandleAdmin(parameters,pcnt,user);
4255 else if (command == "SQUIT")
4257 return this->HandleSquit(parameters,pcnt,user);
4259 else if (command == "MAP")
4261 this->HandleMap(parameters,pcnt,user);
4264 else if ((command == "TIME") && (pcnt > 0))
4266 return this->HandleTime(parameters,pcnt,user);
4268 else if (command == "LUSERS")
4270 this->HandleLusers(parameters,pcnt,user);
4273 else if (command == "LINKS")
4275 this->HandleLinks(parameters,pcnt,user);
4278 else if (command == "WHOIS")
4283 return this->HandleRemoteWhois(parameters,pcnt,user);
4286 else if ((command == "VERSION") && (pcnt > 0))
4288 this->HandleVersion(parameters,pcnt,user);
4295 virtual void OnPostCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, CmdResult result)
4297 if ((result == CMD_SUCCESS) && (ServerInstance->IsValidModuleCommand(command, pcnt, user)))
4299 // this bit of code cleverly routes all module commands
4300 // to all remote severs *automatically* so that modules
4301 // can just handle commands locally, without having
4302 // to have any special provision in place for remote
4303 // commands and linking protocols.
4304 std::deque<std::string> params;
4306 for (int j = 0; j < pcnt; j++)
4308 if (strchr(parameters[j],' '))
4310 params.push_back(":" + std::string(parameters[j]));
4314 params.push_back(std::string(parameters[j]));
4317 ServerInstance->Log(DEBUG,"Globally route '%s'",command.c_str());
4318 DoOneToMany(user->nick,command,params);
4322 virtual void OnGetServerDescription(const std::string &servername,std::string &description)
4324 TreeServer* s = FindServer(servername);
4327 description = s->GetDesc();
4331 virtual void OnUserInvite(userrec* source,userrec* dest,chanrec* channel)
4333 if (IS_LOCAL(source))
4335 std::deque<std::string> params;
4336 params.push_back(dest->nick);
4337 params.push_back(channel->name);
4338 DoOneToMany(source->nick,"INVITE",params);
4342 virtual void OnPostLocalTopicChange(userrec* user, chanrec* chan, const std::string &topic)
4344 std::deque<std::string> params;
4345 params.push_back(chan->name);
4346 params.push_back(":"+topic);
4347 DoOneToMany(user->nick,"TOPIC",params);
4350 virtual void OnWallops(userrec* user, const std::string &text)
4354 std::deque<std::string> params;
4355 params.push_back(":"+text);
4356 DoOneToMany(user->nick,"WALLOPS",params);
4360 virtual void OnUserNotice(userrec* user, void* dest, int target_type, const std::string &text, char status)
4362 if (target_type == TYPE_USER)
4364 userrec* d = (userrec*)dest;
4365 if ((d->GetFd() < 0) && (IS_LOCAL(user)))
4367 std::deque<std::string> params;
4369 params.push_back(d->nick);
4370 params.push_back(":"+text);
4371 DoOneToOne(user->nick,"NOTICE",params,d->server);
4374 else if (target_type == TYPE_CHANNEL)
4378 chanrec *c = (chanrec*)dest;
4381 std::string cname = c->name;
4383 cname = status + cname;
4384 std::deque<TreeServer*> list;
4385 GetListOfServersForChannel(c,list);
4386 unsigned int ucount = list.size();
4387 for (unsigned int i = 0; i < ucount; i++)
4389 TreeSocket* Sock = list[i]->GetSocket();
4391 Sock->WriteLine(":"+std::string(user->nick)+" NOTICE "+cname+" :"+text);
4396 else if (target_type == TYPE_SERVER)
4400 char* target = (char*)dest;
4401 std::deque<std::string> par;
4402 par.push_back(target);
4403 par.push_back(":"+text);
4404 DoOneToMany(user->nick,"NOTICE",par);
4409 virtual void OnUserMessage(userrec* user, void* dest, int target_type, const std::string &text, char status)
4411 if (target_type == TYPE_USER)
4413 // route private messages which are targetted at clients only to the server
4414 // which needs to receive them
4415 userrec* d = (userrec*)dest;
4416 if ((d->GetFd() < 0) && (IS_LOCAL(user)))
4418 std::deque<std::string> params;
4420 params.push_back(d->nick);
4421 params.push_back(":"+text);
4422 DoOneToOne(user->nick,"PRIVMSG",params,d->server);
4425 else if (target_type == TYPE_CHANNEL)
4429 chanrec *c = (chanrec*)dest;
4432 std::string cname = c->name;
4434 cname = status + cname;
4435 std::deque<TreeServer*> list;
4436 GetListOfServersForChannel(c,list);
4437 unsigned int ucount = list.size();
4438 for (unsigned int i = 0; i < ucount; i++)
4440 TreeSocket* Sock = list[i]->GetSocket();
4442 Sock->WriteLine(":"+std::string(user->nick)+" PRIVMSG "+cname+" :"+text);
4447 else if (target_type == TYPE_SERVER)
4451 char* target = (char*)dest;
4452 std::deque<std::string> par;
4453 par.push_back(target);
4454 par.push_back(":"+text);
4455 DoOneToMany(user->nick,"PRIVMSG",par);
4460 virtual void OnBackgroundTimer(time_t curtime)
4462 AutoConnectServers(curtime);
4463 DoPingChecks(curtime);
4466 virtual void OnUserJoin(userrec* user, chanrec* channel)
4468 // Only do this for local users
4472 snprintf(ts,24,"%lu",(unsigned long)channel->age);
4474 std::deque<std::string> params;
4476 params.push_back(channel->name);
4478 /** XXX: The client protocol will IGNORE this parameter.
4479 * We could make use of it if we wanted to keep the TS
4480 * in step if somehow we lose it.
4482 params.push_back(ts);
4484 if (channel->GetUserCounter() > 1)
4486 // not the first in the channel
4487 DoOneToMany(user->nick,"JOIN",params);
4491 // first in the channel, set up their permissions
4492 // and the channel TS with FJOIN.
4494 params.push_back(channel->name);
4495 params.push_back(ts);
4496 params.push_back("@,"+std::string(user->nick));
4497 DoOneToMany(ServerInstance->Config->ServerName,"FJOIN",params);
4502 virtual void OnChangeHost(userrec* user, const std::string &newhost)
4504 // only occurs for local clients
4505 if (user->registered != REG_ALL)
4507 std::deque<std::string> params;
4508 params.push_back(newhost);
4509 DoOneToMany(user->nick,"FHOST",params);
4512 virtual void OnChangeName(userrec* user, const std::string &gecos)
4514 // only occurs for local clients
4515 if (user->registered != REG_ALL)
4517 std::deque<std::string> params;
4518 params.push_back(gecos);
4519 DoOneToMany(user->nick,"FNAME",params);
4522 virtual void OnUserPart(userrec* user, chanrec* channel, const std::string &partmessage)
4526 std::deque<std::string> params;
4527 params.push_back(channel->name);
4528 if (partmessage != "")
4529 params.push_back(":"+partmessage);
4530 DoOneToMany(user->nick,"PART",params);
4534 virtual void OnUserConnect(userrec* user)
4536 char agestr[MAXBUF];
4539 std::deque<std::string> params;
4540 snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age);
4541 params.push_back(agestr);
4542 params.push_back(user->nick);
4543 params.push_back(user->host);
4544 params.push_back(user->dhost);
4545 params.push_back(user->ident);
4546 params.push_back("+"+std::string(user->FormatModes()));
4547 params.push_back(user->GetIPString());
4548 params.push_back(":"+std::string(user->fullname));
4549 DoOneToMany(ServerInstance->Config->ServerName,"NICK",params);
4551 // User is Local, change needs to be reflected!
4552 TreeServer* SourceServer = FindServer(user->server);
4555 SourceServer->AddUserCount();
4561 virtual void OnUserQuit(userrec* user, const std::string &reason)
4563 if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
4565 std::deque<std::string> params;
4566 params.push_back(":"+reason);
4567 DoOneToMany(user->nick,"QUIT",params);
4569 // Regardless, We need to modify the user Counts..
4570 TreeServer* SourceServer = FindServer(user->server);
4573 SourceServer->DelUserCount();
4578 virtual void OnUserPostNick(userrec* user, const std::string &oldnick)
4582 std::deque<std::string> params;
4583 params.push_back(user->nick);
4584 DoOneToMany(oldnick,"NICK",params);
4588 virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason)
4590 if ((source) && (IS_LOCAL(source)))
4592 std::deque<std::string> params;
4593 params.push_back(chan->name);
4594 params.push_back(user->nick);
4595 params.push_back(":"+reason);
4596 DoOneToMany(source->nick,"KICK",params);
4600 std::deque<std::string> params;
4601 params.push_back(chan->name);
4602 params.push_back(user->nick);
4603 params.push_back(":"+reason);
4604 DoOneToMany(ServerInstance->Config->ServerName,"KICK",params);
4608 virtual void OnRemoteKill(userrec* source, userrec* dest, const std::string &reason)
4610 std::deque<std::string> params;
4611 params.push_back(dest->nick);
4612 params.push_back(":"+reason);
4613 DoOneToMany(source->nick,"KILL",params);
4616 virtual void OnRehash(const std::string ¶meter)
4618 if (parameter != "")
4620 std::deque<std::string> params;
4621 params.push_back(parameter);
4622 DoOneToMany(ServerInstance->Config->ServerName,"REHASH",params);
4624 if (ServerInstance->MatchText(ServerInstance->Config->ServerName,parameter))
4626 ServerInstance->WriteOpers("*** Remote rehash initiated from server \002%s\002",ServerInstance->Config->ServerName);
4627 ServerInstance->RehashServer();
4630 ReadConfiguration(false);
4633 // note: the protocol does not allow direct umode +o except
4634 // via NICK with 8 params. sending OPERTYPE infers +o modechange
4636 virtual void OnOper(userrec* user, const std::string &opertype)
4640 std::deque<std::string> params;
4641 params.push_back(opertype);
4642 DoOneToMany(user->nick,"OPERTYPE",params);
4646 void OnLine(userrec* source, const std::string &host, bool adding, char linetype, long duration, const std::string &reason)
4648 if (IS_LOCAL(source))
4651 snprintf(type,8,"%cLINE",linetype);
4652 std::string stype = type;
4655 char sduration[MAXBUF];
4656 snprintf(sduration,MAXBUF,"%ld",duration);
4657 std::deque<std::string> params;
4658 params.push_back(host);
4659 params.push_back(sduration);
4660 params.push_back(":"+reason);
4661 DoOneToMany(source->nick,stype,params);
4665 std::deque<std::string> params;
4666 params.push_back(host);
4667 DoOneToMany(source->nick,stype,params);
4672 virtual void OnAddGLine(long duration, userrec* source, const std::string &reason, const std::string &hostmask)
4674 OnLine(source,hostmask,true,'G',duration,reason);
4677 virtual void OnAddZLine(long duration, userrec* source, const std::string &reason, const std::string &ipmask)
4679 OnLine(source,ipmask,true,'Z',duration,reason);
4682 virtual void OnAddQLine(long duration, userrec* source, const std::string &reason, const std::string &nickmask)
4684 OnLine(source,nickmask,true,'Q',duration,reason);
4687 virtual void OnAddELine(long duration, userrec* source, const std::string &reason, const std::string &hostmask)
4689 OnLine(source,hostmask,true,'E',duration,reason);
4692 virtual void OnDelGLine(userrec* source, const std::string &hostmask)
4694 OnLine(source,hostmask,false,'G',0,"");
4697 virtual void OnDelZLine(userrec* source, const std::string &ipmask)
4699 OnLine(source,ipmask,false,'Z',0,"");
4702 virtual void OnDelQLine(userrec* source, const std::string &nickmask)
4704 OnLine(source,nickmask,false,'Q',0,"");
4707 virtual void OnDelELine(userrec* source, const std::string &hostmask)
4709 OnLine(source,hostmask,false,'E',0,"");
4712 virtual void OnMode(userrec* user, void* dest, int target_type, const std::string &text)
4714 if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
4716 if (target_type == TYPE_USER)
4718 userrec* u = (userrec*)dest;
4719 std::deque<std::string> params;
4720 params.push_back(u->nick);
4721 params.push_back(text);
4722 DoOneToMany(user->nick,"MODE",params);
4726 chanrec* c = (chanrec*)dest;
4727 std::deque<std::string> params;
4728 params.push_back(c->name);
4729 params.push_back(text);
4730 DoOneToMany(user->nick,"MODE",params);
4735 virtual void OnSetAway(userrec* user)
4739 std::deque<std::string> params;
4740 params.push_back(":"+std::string(user->awaymsg));
4741 DoOneToMany(user->nick,"AWAY",params);
4745 virtual void OnCancelAway(userrec* user)
4749 std::deque<std::string> params;
4751 DoOneToMany(user->nick,"AWAY",params);
4755 virtual void ProtoSendMode(void* opaque, int target_type, void* target, const std::string &modeline)
4757 TreeSocket* s = (TreeSocket*)opaque;
4760 if (target_type == TYPE_USER)
4762 userrec* u = (userrec*)target;
4763 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" FMODE "+u->nick+" "+ConvToStr(u->age)+" "+modeline);
4767 chanrec* c = (chanrec*)target;
4768 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age)+" "+modeline);
4773 virtual void ProtoSendMetaData(void* opaque, int target_type, void* target, const std::string &extname, const std::string &extdata)
4775 TreeSocket* s = (TreeSocket*)opaque;
4778 if (target_type == TYPE_USER)
4780 userrec* u = (userrec*)target;
4781 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA "+u->nick+" "+extname+" :"+extdata);
4783 else if (target_type == TYPE_OTHER)
4785 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA * "+extname+" :"+extdata);
4787 else if (target_type == TYPE_CHANNEL)
4789 chanrec* c = (chanrec*)target;
4790 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA "+c->name+" "+extname+" :"+extdata);
4795 virtual void OnEvent(Event* event)
4797 if (event->GetEventID() == "send_metadata")
4799 std::deque<std::string>* params = (std::deque<std::string>*)event->GetData();
4800 if (params->size() < 3)
4802 (*params)[2] = ":" + (*params)[2];
4803 DoOneToMany(ServerInstance->Config->ServerName,"METADATA",*params);
4805 else if (event->GetEventID() == "send_mode")
4807 std::deque<std::string>* params = (std::deque<std::string>*)event->GetData();
4808 if (params->size() < 2)
4810 // Insert the TS value of the object, either userrec or chanrec
4812 userrec* a = ServerInstance->FindNick((*params)[0]);
4819 chanrec* a = ServerInstance->FindChan((*params)[0]);
4825 params->insert(params->begin() + 1,ConvToStr(ourTS));
4826 DoOneToMany(ServerInstance->Config->ServerName,"FMODE",*params);
4830 virtual ~ModuleSpanningTree()
4834 virtual Version GetVersion()
4836 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
4839 void Implements(char* List)
4841 List[I_OnPreCommand] = List[I_OnGetServerDescription] = List[I_OnUserInvite] = List[I_OnPostLocalTopicChange] = 1;
4842 List[I_OnWallops] = List[I_OnUserNotice] = List[I_OnUserMessage] = List[I_OnBackgroundTimer] = 1;
4843 List[I_OnUserJoin] = List[I_OnChangeHost] = List[I_OnChangeName] = List[I_OnUserPart] = List[I_OnUserConnect] = 1;
4844 List[I_OnUserQuit] = List[I_OnUserPostNick] = List[I_OnUserKick] = List[I_OnRemoteKill] = List[I_OnRehash] = 1;
4845 List[I_OnOper] = List[I_OnAddGLine] = List[I_OnAddZLine] = List[I_OnAddQLine] = List[I_OnAddELine] = 1;
4846 List[I_OnDelGLine] = List[I_OnDelZLine] = List[I_OnDelQLine] = List[I_OnDelELine] = List[I_ProtoSendMode] = List[I_OnMode] = 1;
4847 List[I_OnStats] = List[I_ProtoSendMetaData] = List[I_OnEvent] = List[I_OnSetAway] = List[I_OnCancelAway] = List[I_OnPostCommand] = 1;
4850 /* It is IMPORTANT that m_spanningtree is the last module in the chain
4851 * so that any activity it sees is FINAL, e.g. we arent going to send out
4852 * a NICK message before m_cloaking has finished putting the +x on the user,
4854 * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
4855 * the module call queue.
4857 Priority Prioritize()
4859 return PRIORITY_LAST;
4863 void DoFailOver(Link* x)
4865 TreeProtocolModule->DoFailOver(x);
4868 Link* FindLink(const std::string& name)
4870 return TreeProtocolModule->FindLink(name);
4873 class ModuleSpanningTreeFactory : public ModuleFactory
4876 ModuleSpanningTreeFactory()
4880 ~ModuleSpanningTreeFactory()
4884 virtual Module * CreateModule(InspIRCd* Me)
4886 TreeProtocolModule = new ModuleSpanningTree(Me);
4887 return TreeProtocolModule;
4893 extern "C" void * init_module( void )
4895 return new ModuleSpanningTreeFactory;