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 * The server list in InspIRCd is maintained as two structures
38 * which hold the data in different ways. Most of the time, we
39 * want to very quicky obtain three pieces of information:
41 * (1) The information on a server
42 * (2) The information on the server we must send data through
43 * to actually REACH the server we're after
44 * (3) Potentially, the child/parent objects of this server
46 * The InspIRCd spanning protocol provides easy access to these
47 * by storing the data firstly in a recursive structure, where
48 * each item references its parent item, and a dynamic list
49 * of child items, and another structure which stores the items
50 * hashed, linearly. This means that if we want to find a server
51 * by name quickly, we can look it up in the hash, avoiding
52 * any O(n) lookups. If however, during a split or sync, we want
53 * to apply an operation to a server, and any of its child objects
54 * we can resort to recursion to walk the tree structure.
57 using irc::sockets::MatchCIDR;
59 class ModuleSpanningTree;
60 static ModuleSpanningTree* TreeProtocolModule;
61 static InspIRCd* ServerInstance;
63 /* Any socket can have one of five states at any one time.
64 * The LISTENER state indicates a socket which is listening
65 * for connections. It cannot receive data itself, only incoming
67 * The CONNECTING state indicates an outbound socket which is
68 * waiting to be writeable.
69 * The WAIT_AUTH_1 state indicates the socket is outbound and
70 * has successfully connected, but has not yet sent and received
72 * The WAIT_AUTH_2 state indicates that the socket is inbound
73 * (allocated by a LISTENER) but has not yet sent and received
75 * The CONNECTED state represents a fully authorized, fully
78 enum ServerState { LISTENER, CONNECTING, WAIT_AUTH_1, WAIT_AUTH_2, CONNECTED };
80 /* Foward declarations */
84 /* This variable represents the root of the server tree
85 * (for all intents and purposes, it's us)
89 /* This hash_map holds the hash equivalent of the server
90 * tree, used for rapid linear lookups.
92 typedef nspace::hash_map<std::string, TreeServer*, nspace::hash<string>, irc::StrHashComp> server_hash;
93 server_hash serverlist;
95 typedef nspace::hash_map<std::string, userrec*> uid_hash;
96 typedef nspace::hash_map<std::string, char*> sid_hash;
98 /* More forward declarations */
99 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string target);
100 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string omit);
101 bool DoOneToAllButSender(const char* prefix, const char* command, std::deque<std::string> ¶ms, std::string omit);
102 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> ¶ms);
103 bool DoOneToMany(const char* prefix, const char* command, std::deque<std::string> ¶ms);
104 bool DoOneToAllButSenderRaw(std::string data, std::string omit, std::string prefix, irc::string command, std::deque<std::string> ¶ms);
105 void ReadConfiguration(bool rebind);
107 /* Flatten links and /MAP for non-opers */
109 /* Hide U-Lined servers in /MAP and /LINKS */
112 std::vector<std::string> ValidIPs;
114 class UserManager : public classbase
125 std::string UserToUID(userrec* user)
130 std::string UIDToUser(const std::string &UID)
135 std::string CreateAndAdd(userrec* user)
140 std::string CreateAndAdd(const std::string &servername)
145 std::string ServerToSID(const std::string &servername)
150 std::string SIDToServer(const std::string &SID)
155 userrec* FindByID(const std::string &UID)
162 /* Each server in the tree is represented by one class of
163 * type TreeServer. A locally connected TreeServer can
164 * have a class of type TreeSocket associated with it, for
165 * remote servers, the TreeSocket entry will be NULL.
166 * Each server also maintains a pointer to its parent
167 * (NULL if this server is ours, at the top of the tree)
168 * and a pointer to its "Route" (see the comments in the
169 * constructors below), and also a dynamic list of pointers
170 * to its children which can be iterated recursively
171 * if required. Creating or deleting objects of type
172 i* TreeServer automatically maintains the hash_map of
173 * TreeServer items, deleting and inserting them as they
174 * are created and destroyed.
177 class TreeServer : public classbase
179 InspIRCd* ServerInstance; /* Creator */
180 TreeServer* Parent; /* Parent entry */
181 TreeServer* Route; /* Route entry */
182 std::vector<TreeServer*> Children; /* List of child objects */
183 irc::string ServerName; /* Server's name */
184 std::string ServerDesc; /* Server's description */
185 std::string VersionString; /* Version string or empty string */
186 int UserCount; /* Not used in this version */
187 int OperCount; /* Not used in this version */
188 TreeSocket* Socket; /* For directly connected servers this points at the socket object */
189 time_t NextPing; /* After this time, the server should be PINGed*/
190 bool LastPingWasGood; /* True if the server responded to the last PING with a PONG */
194 /* We don't use this constructor. Its a dummy, and won't cause any insertion
195 * of the TreeServer into the hash_map. See below for the two we DO use.
197 TreeServer(InspIRCd* Instance) : ServerInstance(Instance)
203 UserCount = OperCount = 0;
204 VersionString = ServerInstance->GetVersionString();
207 /* We use this constructor only to create the 'root' item, TreeRoot, which
208 * represents our own server. Therefore, it has no route, no parent, and
209 * no socket associated with it. Its version string is our own local version.
211 TreeServer(InspIRCd* Instance, std::string Name, std::string Desc) : ServerInstance(Instance), ServerName(Name.c_str()), ServerDesc(Desc)
215 UserCount = OperCount = 0;
216 VersionString = ServerInstance->GetVersionString();
218 Socket = NULL; /* Fix by brain */
222 /* When we create a new server, we call this constructor to initialize it.
223 * This constructor initializes the server's Route and Parent, and sets up
224 * its ping counters so that it will be pinged one minute from now.
226 TreeServer(InspIRCd* Instance, std::string Name, std::string Desc, TreeServer* Above, TreeSocket* Sock)
227 : ServerInstance(Instance), Parent(Above), ServerName(Name.c_str()), ServerDesc(Desc), Socket(Sock)
230 UserCount = OperCount = 0;
231 this->SetNextPingTime(time(NULL) + 60);
234 /* find the 'route' for this server (e.g. the one directly connected
235 * to the local server, which we can use to reach it)
237 * In the following example, consider we have just added a TreeServer
238 * class for server G on our network, of which we are server A.
239 * To route traffic to G (marked with a *) we must send the data to
240 * B (marked with a +) so this algorithm initializes the 'Route'
241 * value to point at whichever server traffic must be routed through
242 * to get here. If we were to try this algorithm with server B,
243 * the Route pointer would point at its own object ('this').
253 * We only run this algorithm when a server is created, as
254 * the routes remain constant while ever the server exists, and
255 * do not need to be re-calculated.
259 if (Route == TreeRoot)
265 while (this->Route->GetParent() != TreeRoot)
267 this->Route = Route->GetParent();
271 /* Because recursive code is slow and takes a lot of resources,
272 * we store two representations of the server tree. The first
273 * is a recursive structure where each server references its
274 * children and its parent, which is used for netbursts and
275 * netsplits to dump the whole dataset to the other server,
276 * and the second is used for very fast lookups when routing
277 * messages and is instead a hash_map, where each item can
278 * be referenced by its server name. The AddHashEntry()
279 * call below automatically inserts each TreeServer class
280 * into the hash_map as it is created. There is a similar
281 * maintainance call in the destructor to tidy up deleted
285 this->AddHashEntry();
288 int QuitUsers(const std::string &reason)
290 ServerInstance->Log(DEBUG,"Removing all users from server %s",this->ServerName.c_str());
291 const char* reason_s = reason.c_str();
292 std::vector<userrec*> time_to_die;
293 for (user_hash::iterator n = ServerInstance->clientlist.begin(); n != ServerInstance->clientlist.end(); n++)
295 if (!strcmp(n->second->server, this->ServerName.c_str()))
297 time_to_die.push_back(n->second);
300 for (std::vector<userrec*>::iterator n = time_to_die.begin(); n != time_to_die.end(); n++)
302 userrec* a = (userrec*)*n;
303 ServerInstance->Log(DEBUG,"Kill %s fd=%d",a->nick,a->GetFd());
305 userrec::QuitUser(ServerInstance,a,reason_s);
307 return time_to_die.size();
310 /* This method is used to add the structure to the
311 * hash_map for linear searches. It is only called
312 * by the constructors.
316 server_hash::iterator iter;
317 iter = serverlist.find(this->ServerName.c_str());
318 if (iter == serverlist.end())
319 serverlist[this->ServerName.c_str()] = this;
322 /* This method removes the reference to this object
323 * from the hash_map which is used for linear searches.
324 * It is only called by the default destructor.
328 server_hash::iterator iter;
329 iter = serverlist.find(this->ServerName.c_str());
330 if (iter != serverlist.end())
331 serverlist.erase(iter);
334 /* These accessors etc should be pretty self-
338 TreeServer* GetRoute()
343 std::string GetName()
345 return ServerName.c_str();
348 std::string GetDesc()
353 std::string GetVersion()
355 return VersionString;
358 void SetNextPingTime(time_t t)
361 LastPingWasGood = false;
364 time_t NextPingTime()
369 bool AnsweredLastPing()
371 return LastPingWasGood;
376 LastPingWasGood = true;
399 TreeSocket* GetSocket()
404 TreeServer* GetParent()
409 void SetVersion(std::string Version)
411 VersionString = Version;
414 unsigned int ChildCount()
416 return Children.size();
419 TreeServer* GetChild(unsigned int n)
421 if (n < Children.size())
423 /* Make sure they cant request
424 * an out-of-range object. After
425 * all we know what these programmer
426 * types are like *grin*.
436 void AddChild(TreeServer* Child)
438 Children.push_back(Child);
441 bool DelChild(TreeServer* Child)
443 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
454 /* Removes child nodes of this node, and of that node, etc etc.
455 * This is used during netsplits to automatically tidy up the
456 * server tree. It is slow, we don't use it for much else.
460 bool stillchildren = true;
461 while (stillchildren)
463 stillchildren = false;
464 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
466 TreeServer* s = (TreeServer*)*a;
470 stillchildren = true;
479 /* We'd better tidy up after ourselves, eh? */
480 this->DelHashEntry();
484 /* The Link class might as well be a struct,
485 * but this is C++ and we don't believe in structs (!).
486 * It holds the entire information of one <link>
487 * tag from the main config file. We maintain a list
488 * of them, and populate the list on rehash/load.
491 class Link : public classbase
497 std::string SendPass;
498 std::string RecvPass;
499 unsigned long AutoConnect;
500 time_t NextConnectTime;
501 std::string EncryptionKey;
502 bool HiddenFromStats;
505 /* The usual stuff for inspircd modules,
506 * plus the vector of Link classes which we
507 * use to store the <link> tags from the config
511 std::vector<Link> LinkBlocks;
513 /* Yay for fast searches!
514 * This is hundreds of times faster than recursion
515 * or even scanning a linked list, especially when
516 * there are more than a few servers to deal with.
519 TreeServer* FindServer(std::string ServerName)
521 server_hash::iterator iter;
522 iter = serverlist.find(ServerName.c_str());
523 if (iter != serverlist.end())
533 /* Returns the locally connected server we must route a
534 * message through to reach server 'ServerName'. This
535 * only applies to one-to-one and not one-to-many routing.
536 * See the comments for the constructor of TreeServer
539 TreeServer* BestRouteTo(std::string ServerName)
541 if (ServerName.c_str() == TreeRoot->GetName())
543 TreeServer* Found = FindServer(ServerName);
546 return Found->GetRoute();
554 /* Find the first server matching a given glob mask.
555 * Theres no find-using-glob method of hash_map [awwww :-(]
556 * so instead, we iterate over the list using an iterator
557 * and match each one until we get a hit. Yes its slow,
560 TreeServer* FindServerMask(std::string ServerName)
562 for (server_hash::iterator i = serverlist.begin(); i != serverlist.end(); i++)
564 if (match(i->first.c_str(),ServerName.c_str()))
570 /* A convenient wrapper that returns true if a server exists */
571 bool IsServer(std::string ServerName)
573 return (FindServer(ServerName) != NULL);
577 class cmd_rconnect : public command_t
581 cmd_rconnect (InspIRCd* Instance, Module* Callback) : command_t(Instance, "RCONNECT", 'o', 2), Creator(Callback)
583 this->source = "m_spanningtree.so";
584 syntax = "<remote-server-mask> <servermask>";
587 void Handle (const char** parameters, int pcnt, userrec *user)
589 user->WriteServ("NOTICE %s :*** RCONNECT: Sending remote connect to \002%s\002 to connect server \002%s\002.",user->nick,parameters[0],parameters[1]);
590 /* Is this aimed at our server? */
591 if (ServerInstance->MatchText(ServerInstance->Config->ServerName,parameters[0]))
593 /* Yes, initiate the given connect */
594 ServerInstance->SNO->WriteToSnoMask('l',"Remote CONNECT from %s matching \002%s\002, connecting server \002%s\002",user->nick,parameters[0],parameters[1]);
596 para[0] = parameters[1];
597 Creator->OnPreCommand("CONNECT", para, 1, user, true);
604 /* Every SERVER connection inbound or outbound is represented by
605 * an object of type TreeSocket.
606 * TreeSockets, being inherited from InspSocket, can be tied into
607 * the core socket engine, and we cn therefore receive activity events
608 * for them, just like activex objects on speed. (yes really, that
609 * is a technical term!) Each of these which relates to a locally
610 * connected server is assocated with it, by hooking it onto a
611 * TreeSocket class using its constructor. In this way, we can
612 * maintain a list of servers, some of which are directly connected,
613 * some of which are not.
616 class TreeSocket : public InspSocket
619 std::string in_buffer;
620 ServerState LinkState;
621 std::string InboundServerName;
622 std::string InboundDescription;
624 int num_lost_servers;
626 bool LastPingWasGood;
630 unsigned int keylength;
631 std::string ModuleList;
632 std::map<std::string,std::string> CapKeys;
636 /* Because most of the I/O gubbins are encapsulated within
637 * InspSocket, we just call the superclass constructor for
638 * most of the action, and append a few of our own values
641 TreeSocket(InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime)
642 : InspSocket(SI, host, port, listening, maxtime)
645 this->LinkState = LISTENER;
647 this->ctx_out = NULL;
650 TreeSocket(InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime, std::string ServerName)
651 : InspSocket(SI, host, port, listening, maxtime)
654 this->LinkState = CONNECTING;
656 this->ctx_out = NULL;
659 /* When a listening socket gives us a new file descriptor,
660 * we must associate it with a socket without creating a new
661 * connection. This constructor is used for this purpose.
663 TreeSocket(InspIRCd* SI, int newfd, char* ip)
664 : InspSocket(SI, newfd, ip)
666 this->LinkState = WAIT_AUTH_1;
668 this->ctx_out = NULL;
669 this->SendCapabilities();
680 void InitAES(std::string key,std::string SName)
687 ServerInstance->Log(DEBUG,"Initialized AES key %s",key.c_str());
688 // key must be 16, 24, 32 etc bytes (multiple of 8)
689 keylength = key.length();
690 if (!(keylength == 16 || keylength == 24 || keylength == 32))
692 this->Instance->SNO->WriteToSnoMask('l',"\2ERROR\2: Key length for encryptionkey is not 16, 24 or 32 bytes in length!");
693 ServerInstance->Log(DEBUG,"Key length not 16, 24 or 32 characters!");
697 this->Instance->SNO->WriteToSnoMask('l',"\2AES\2: Initialized %d bit encryption to server %s",keylength*8,SName.c_str());
698 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\
699 \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);
700 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\
701 \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);
705 /* When an outbound connection finishes connecting, we receive
706 * this event, and must send our SERVER string to the other
707 * side. If the other side is happy, as outlined in the server
708 * to server docs on the inspircd.org site, the other side
709 * will then send back its own server string.
711 virtual bool OnConnected()
713 if (this->LinkState == CONNECTING)
715 /* we do not need to change state here. */
716 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
718 if (x->Name == this->myhost)
720 this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] established.");
721 this->SendCapabilities();
722 if (x->EncryptionKey != "")
724 if (!(x->EncryptionKey.length() == 16 || x->EncryptionKey.length() == 24 || x->EncryptionKey.length() == 32))
726 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.");
730 this->WriteLine(std::string("AES ")+this->Instance->Config->ServerName);
731 this->InitAES(x->EncryptionKey,x->Name.c_str());
734 /* found who we're supposed to be connecting to, send the neccessary gubbins. */
735 this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc);
740 /* There is a (remote) chance that between the /CONNECT and the connection
741 * being accepted, some muppet has removed the <link> block and rehashed.
742 * If that happens the connection hangs here until it's closed. Unlikely
743 * and rather harmless.
745 this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2 lost link tag(!)");
749 virtual void OnError(InspSocketError e)
751 /* We don't handle this method, because all our
752 * dirty work is done in OnClose() (see below)
753 * which is still called on error conditions too.
755 if (e == I_ERR_CONNECT)
757 this->Instance->SNO->WriteToSnoMask('l',"Connection failed: Connection refused");
761 virtual int OnDisconnect()
763 /* For the same reason as above, we don't
764 * handle OnDisconnect()
769 /* Recursively send the server tree with distances as hops.
770 * This is used during network burst to inform the other server
771 * (and any of ITS servers too) of what servers we know about.
772 * If at any point any of these servers already exist on the other
773 * end, our connection may be terminated. The hopcounts given
774 * by this function are relative, this doesn't matter so long as
775 * they are all >1, as all the remote servers re-calculate them
776 * to be relative too, with themselves as hop 0.
778 void SendServers(TreeServer* Current, TreeServer* s, int hops)
781 for (unsigned int q = 0; q < Current->ChildCount(); q++)
783 TreeServer* recursive_server = Current->GetChild(q);
784 if (recursive_server != s)
786 snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str());
787 this->WriteLine(command);
788 this->WriteLine(":"+recursive_server->GetName()+" VERSION :"+recursive_server->GetVersion());
789 /* down to next level */
790 this->SendServers(recursive_server, s, hops+1);
795 std::string MyCapabilities()
797 std::vector<std::string> modlist;
798 std::string capabilities = "";
800 for (int i = 0; i <= this->Instance->GetModuleCount(); i++)
802 if ((this->Instance->modules[i]->GetVersion().Flags & VF_STATIC) || (this->Instance->modules[i]->GetVersion().Flags & VF_COMMON))
803 modlist.push_back(this->Instance->Config->module_names[i]);
805 sort(modlist.begin(),modlist.end());
806 for (unsigned int i = 0; i < modlist.size(); i++)
809 capabilities = capabilities + ",";
810 capabilities = capabilities + modlist[i];
815 void SendCapabilities()
817 irc::commasepstream modulelist(MyCapabilities());
819 this->WriteLine("CAPAB START");
821 /* Send module names, split at 509 length */
822 std::string item = "*";
823 std::string line = "CAPAB MODULES ";
824 while ((item = modulelist.GetToken()) != "")
826 if (line.length() + item.length() + 1 > 509)
828 this->WriteLine(line);
829 line = "CAPAB MODULES ";
832 if (line != "CAPAB MODULES ")
837 if (line != "CAPAB MODULES ")
838 this->WriteLine(line);
845 #ifdef SUPPORT_IP6LINKS
848 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));
850 this->WriteLine("CAPAB END");
853 /* Check a comma seperated list for an item */
854 bool HasItem(const std::string &list, const std::string &item)
856 irc::commasepstream seplist(list);
858 std::string item2 = "*";
859 while ((item2 = seplist.GetToken()) != "")
868 /* Isolate and return the elements that are different between two comma seperated lists */
869 std::string ListDifference(const std::string &one, const std::string &two)
871 irc::commasepstream list_one(one);
872 std::string item = "*";
873 std::string result = "";
874 while ((item = list_one.GetToken()) != "")
876 if (!HasItem(two, item))
885 bool Capab(std::deque<std::string> params)
887 if (params.size() < 1)
889 this->WriteLine("ERROR :Invalid number of parameters for CAPAB - Mismatched version");
893 if (params[0] == "START")
895 this->ModuleList = "";
896 this->CapKeys.clear();
898 else if (params[0] == "END")
900 std::string reason = "";
902 #ifdef SUPPORT_IP6LINKS
905 /* Compare ModuleList and check CapKeys...
906 * Maybe this could be tidier? -- Brain
908 if ((this->ModuleList != this->MyCapabilities()) && (this->ModuleList.length()))
910 std::string diff = ListDifference(this->ModuleList, this->MyCapabilities());
913 diff = "your server:" + ListDifference(this->MyCapabilities(), this->ModuleList);
917 diff = "this server:" + diff;
919 if (diff.length() == 12)
920 reason = "Module list in CAPAB is not alphabetically ordered, cannot compare lists.";
922 reason = "Modules loaded on these servers are not correctly matched, these modules are not loaded on " + diff;
925 if (((this->CapKeys.find("IP6SUPPORT") == this->CapKeys.end()) && (ip6support)) || ((this->CapKeys.find("IP6SUPPORT") != this->CapKeys.end()) && (this->CapKeys.find("IP6SUPPORT")->second != ConvToStr(ip6support))))
926 reason = "We don't both support linking to IPV6 servers";
928 if (((this->CapKeys.find("IP6NATIVE") != this->CapKeys.end()) && (this->CapKeys.find("IP6NATIVE")->second == "1")) && (!ip6support))
929 reason = "The remote server is IPV6 native, and we don't support linking to IPV6 servers";
931 if (((this->CapKeys.find("NICKMAX") == this->CapKeys.end()) || ((this->CapKeys.find("NICKMAX") != this->CapKeys.end()) && (this->CapKeys.find("NICKMAX")->second != ConvToStr(NICKMAX)))))
932 reason = "Maximum nickname lengths differ or remote nickname length not specified";
934 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))))
935 reason = "We don't both have halfop support enabled/disabled identically";
937 if (((this->CapKeys.find("IDENTMAX") == this->CapKeys.end()) || ((this->CapKeys.find("IDENTMAX") != this->CapKeys.end()) && (this->CapKeys.find("IDENTMAX")->second != ConvToStr(IDENTMAX)))))
938 reason = "Maximum ident lengths differ or remote ident length not specified";
940 if (((this->CapKeys.find("CHANMAX") == this->CapKeys.end()) || ((this->CapKeys.find("CHANMAX") != this->CapKeys.end()) && (this->CapKeys.find("CHANMAX")->second != ConvToStr(CHANMAX)))))
941 reason = "Maximum channel lengths differ or remote channel length not specified";
943 if (((this->CapKeys.find("MAXMODES") == this->CapKeys.end()) || ((this->CapKeys.find("MAXMODES") != this->CapKeys.end()) && (this->CapKeys.find("MAXMODES")->second != ConvToStr(MAXMODES)))))
944 reason = "Maximum modes per line differ or remote modes per line not specified";
946 if (((this->CapKeys.find("MAXQUIT") == this->CapKeys.end()) || ((this->CapKeys.find("MAXQUIT") != this->CapKeys.end()) && (this->CapKeys.find("MAXQUIT")->second != ConvToStr(MAXQUIT)))))
947 reason = "Maximum quit lengths differ or remote quit length not specified";
949 if (((this->CapKeys.find("MAXTOPIC") == this->CapKeys.end()) || ((this->CapKeys.find("MAXTOPIC") != this->CapKeys.end()) && (this->CapKeys.find("MAXTOPIC")->second != ConvToStr(MAXTOPIC)))))
950 reason = "Maximum topic lengths differ or remote topic length not specified";
952 if (((this->CapKeys.find("MAXKICK") == this->CapKeys.end()) || ((this->CapKeys.find("MAXKICK") != this->CapKeys.end()) && (this->CapKeys.find("MAXKICK")->second != ConvToStr(MAXKICK)))))
953 reason = "Maximum kick lengths differ or remote kick length not specified";
955 if (((this->CapKeys.find("MAXGECOS") == this->CapKeys.end()) || ((this->CapKeys.find("MAXGECOS") != this->CapKeys.end()) && (this->CapKeys.find("MAXGECOS")->second != ConvToStr(MAXGECOS)))))
956 reason = "Maximum GECOS (fullname) lengths differ or remote GECOS length not specified";
958 if (((this->CapKeys.find("MAXAWAY") == this->CapKeys.end()) || ((this->CapKeys.find("MAXAWAY") != this->CapKeys.end()) && (this->CapKeys.find("MAXAWAY")->second != ConvToStr(MAXAWAY)))))
959 reason = "Maximum awaymessage lengths differ or remote awaymessage length not specified";
963 this->WriteLine("ERROR :CAPAB negotiation failed: "+reason);
967 else if ((params[0] == "MODULES") && (params.size() == 2))
969 if (!this->ModuleList.length())
971 this->ModuleList.append(params[1]);
975 this->ModuleList.append(",");
976 this->ModuleList.append(params[1]);
979 else if ((params[0] == "CAPABILITIES") && (params.size() == 2))
981 irc::tokenstream capabs(params[1]);
982 std::string item = "*";
983 while ((item = capabs.GetToken()) != "")
985 /* Process each key/value pair */
986 std::string::size_type equals = item.rfind('=');
987 if (equals != std::string::npos)
989 std::string var = item.substr(0, equals);
990 std::string value = item.substr(equals+1, item.length());
991 this->Instance->Log(DEBUG,"Key='%s' Value='%s'",var.c_str(),value.c_str());
992 CapKeys[var] = value;
1000 /* This function forces this server to quit, removing this server
1001 * and any users on it (and servers and users below that, etc etc).
1002 * It's very slow and pretty clunky, but luckily unless your network
1003 * is having a REAL bad hair day, this function shouldnt be called
1004 * too many times a month ;-)
1006 void SquitServer(std::string &from, TreeServer* Current)
1008 /* recursively squit the servers attached to 'Current'.
1009 * We're going backwards so we don't remove users
1010 * while we still need them ;)
1012 for (unsigned int q = 0; q < Current->ChildCount(); q++)
1014 TreeServer* recursive_server = Current->GetChild(q);
1015 this->SquitServer(from,recursive_server);
1017 /* Now we've whacked the kids, whack self */
1019 num_lost_users += Current->QuitUsers(from);
1022 /* This is a wrapper function for SquitServer above, which
1023 * does some validation first and passes on the SQUIT to all
1024 * other remaining servers.
1026 void Squit(TreeServer* Current,std::string reason)
1028 if ((Current) && (Current != TreeRoot))
1030 std::deque<std::string> params;
1031 params.push_back(Current->GetName());
1032 params.push_back(":"+reason);
1033 DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
1034 if (Current->GetParent() == TreeRoot)
1036 this->Instance->WriteOpers("Server \002"+Current->GetName()+"\002 split: "+reason);
1040 this->Instance->WriteOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
1042 num_lost_servers = 0;
1044 std::string from = Current->GetParent()->GetName()+" "+Current->GetName();
1045 SquitServer(from, Current);
1047 Current->GetParent()->DelChild(Current);
1049 this->Instance->WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
1053 ServerInstance->Log(DEFAULT,"Squit from unknown server");
1057 /* FMODE command - server mode with timestamp checks */
1058 bool ForceMode(std::string source, std::deque<std::string> ¶ms)
1060 /* Chances are this is a 1.0 FMODE without TS */
1061 if (params.size() < 3)
1063 this->WriteLine("ERROR :Version 1.0 FMODE sent to version 1.1 server");
1068 std::string sourceserv;
1070 /* Are we dealing with an FMODE from a user, or from a server? */
1071 userrec* who = this->Instance->FindNick(source);
1074 /* FMODE from a user, set sourceserv to the users server name */
1075 sourceserv = who->server;
1079 /* FMODE from a server, create a fake user to receive mode feedback */
1080 who = new userrec(this->Instance);
1081 who->SetFd(FD_MAGIC_NUMBER);
1082 smode = true; /* Setting this flag tells us we should free the userrec later */
1083 sourceserv = source; /* Set sourceserv to the actual source string */
1085 const char* modelist[64];
1088 memset(&modelist,0,sizeof(modelist));
1089 for (unsigned int q = 0; (q < params.size()) && (q < 64); q++)
1093 /* The timestamp is in this position.
1094 * We don't want to pass that up to the
1095 * server->client protocol!
1097 TS = atoi(params[q].c_str());
1101 /* Everything else is fine to append to the modelist */
1102 modelist[n++] = params[q].c_str();
1106 /* Extract the TS value of the object, either userrec or chanrec */
1107 userrec* dst = this->Instance->FindNick(params[0]);
1108 chanrec* chan = NULL;
1116 chan = this->Instance->FindChan(params[0]);
1123 /* TS is equal: Merge the mode changes, use voooodoooooo on modes
1128 ServerInstance->Log(DEBUG,"Entering TS equality check");
1129 ModeHandler* mh = NULL;
1130 unsigned long paramptr = 3;
1131 std::string to_bounce = "";
1132 std::string to_keep = "";
1133 std::vector<std::string> params_to_keep;
1134 std::string params_to_bounce = "";
1136 char cur_change = 1;
1137 char old_change = 0;
1138 char old_bounce_change = 0;
1139 /* Merge modes, basically do special stuff to mode with params */
1140 for (std::string::iterator x = params[2].begin(); x != params[2].end(); x++)
1153 /* We only care about whats being set,
1154 * not whats being unset
1156 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1158 if ((mh) && (mh->GetNumParams(adding) > 0) && (!mh->IsListMode()))
1160 /* We only want to do special things to
1161 * modes with parameters, we are going to rewrite
1165 adding ? cur_change = '+' : cur_change = '-';
1167 ret = mh->ModeSet(smode ? NULL : who, dst, chan, params[paramptr]);
1169 /* The mode is set here, check which we should keep */
1172 bool which_to_keep = mh->CheckTimeStamp(TS, ourTS, params[paramptr], ret.second, chan);
1174 if (which_to_keep == true)
1176 /* Keep ours, bounce theirs:
1177 * Send back ours to them and
1178 * drop their mode changs
1180 adding ? cur_change = '+' : cur_change = '-';
1181 if (cur_change != old_bounce_change)
1182 to_bounce += cur_change;
1184 old_bounce_change = cur_change;
1186 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1187 params_to_bounce.append(" ").append(ret.second);
1191 /* Keep theirs: Accept their mode change,
1194 adding ? cur_change = '+' : cur_change = '-';
1195 if (cur_change != old_change)
1196 to_keep += cur_change;
1198 old_change = cur_change;
1200 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1201 params_to_keep.push_back(params[paramptr]);
1206 /* Mode isnt set here, we want it */
1207 adding ? cur_change = '+' : cur_change = '-';
1208 if (cur_change != old_change)
1209 to_keep += cur_change;
1211 old_change = cur_change;
1213 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1214 params_to_keep.push_back(params[paramptr]);
1221 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1225 adding ? cur_change = '+' : cur_change = '-';
1227 /* Just keep this, safe to merge with no checks
1228 * it has no parameters
1231 if (cur_change != old_change)
1232 to_keep += cur_change;
1234 old_change = cur_change;
1236 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1238 ServerInstance->Log(DEBUG,"Mode removal %d %d",adding, mh->GetNumParams(adding));
1239 params_to_keep.push_back(params[paramptr++]);
1246 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1250 /* Taking a mode away */
1251 adding ? cur_change = '+' : cur_change = '-';
1253 if (cur_change != old_change)
1254 to_keep += cur_change;
1256 old_change = cur_change;
1258 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1259 params_to_keep.push_back(params[paramptr++]);
1266 if (to_bounce.length())
1268 std::deque<std::string> newparams;
1269 newparams.push_back(params[0]);
1270 newparams.push_back(ConvToStr(ourTS));
1271 newparams.push_back(to_bounce+params_to_bounce);
1272 DoOneToOne(this->Instance->Config->ServerName,"FMODE",newparams,sourceserv);
1275 if (to_keep.length())
1279 modelist[0] = params[0].c_str();
1280 modelist[1] = to_keep.c_str();
1282 if (params_to_keep.size() > 2)
1284 for (q = 2; (q < params_to_keep.size()) && (q < 64); q++)
1286 ServerInstance->Log(DEBUG,"Item %d of %d", q, params_to_keep.size());
1287 modelist[n++] = params_to_keep[q].c_str();
1293 ServerInstance->Log(DEBUG,"Send mode");
1294 this->Instance->SendMode(modelist, n+2, who);
1298 ServerInstance->Log(DEBUG,"Send mode client");
1299 this->Instance->CallCommandHandler("MODE", modelist, n+2, who);
1302 /* HOT POTATO! PASS IT ON! */
1303 DoOneToAllButSender(source,"FMODE",params,sourceserv);
1307 /* U-lined servers always win regardless of their TS */
1308 if ((TS > ourTS) && (!this->Instance->ULine(source.c_str())))
1310 /* Bounce the mode back to its sender.* We use our lower TS, so the other end
1311 * SHOULD accept it, if its clock is right.
1313 * NOTE: We should check that we arent bouncing anything thats already set at this end.
1314 * If we are, bounce +ourmode to 'reinforce' it. This prevents desyncs.
1315 * e.g. They send +l 50, we have +l 10 set. rather than bounce -l 50, we bounce +l 10.
1317 * Thanks to jilles for pointing out this one-hell-of-an-issue before i even finished
1318 * writing the code. It took me a while to come up with this solution.
1320 * XXX: BE SURE YOU UNDERSTAND THIS CODE FULLY BEFORE YOU MESS WITH IT.
1323 std::deque<std::string> newparams; /* New parameter list we send back */
1324 newparams.push_back(params[0]); /* Target, user or channel */
1325 newparams.push_back(ConvToStr(ourTS)); /* Timestamp value of the target */
1326 newparams.push_back(""); /* This contains the mode string. For now
1327 * it's empty, we fill it below.
1330 /* Intelligent mode bouncing. Don't just invert, reinforce any modes which are already
1331 * set to avoid a desync here.
1333 std::string modebounce = "";
1336 ModeHandler* mh = NULL;
1337 char cur_change = 1;
1338 char old_change = 0;
1339 for (std::string::iterator x = params[2].begin(); x != params[2].end(); x++)
1341 /* Iterate over all mode chars in the sent set */
1344 /* Adding or subtracting modes? */
1352 /* Find the mode handler for this mode */
1353 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1355 /* Got a mode handler?
1356 * This also prevents us bouncing modes we have no handler for.
1363 /* Does the mode require a parameter right now?
1364 * If it does, fetch it if we can
1366 if ((mh->GetNumParams(adding) > 0) && (t < params.size()))
1369 /* Call the ModeSet method to determine if its set with the
1370 * given parameter here or not.
1372 ret = mh->ModeSet(smode ? NULL : who, dst, chan, p);
1374 /* XXX: Really. Dont ask.
1375 * Determine from if its set combined with what the current
1376 * 'state' is (adding or not) as to wether we should 'invert'
1377 * or 'reinforce' the mode change
1379 (!ret.first ? (adding ? cur_change = '-' : cur_change = '+') : (!adding ? cur_change = '-' : cur_change = '+'));
1381 /* Quickly determine if we have 'flipped' from + to -,
1382 * or - to +, to prevent unneccessary +/- chars in the
1383 * output string that waste bandwidth
1385 if (cur_change != old_change)
1386 modebounce += cur_change;
1387 old_change = cur_change;
1389 /* Add the mode character to the output string */
1390 modebounce += mh->GetModeChar();
1392 /* We got a parameter back from ModeHandler::ModeSet,
1393 * are we supposed to be sending one out right now?
1395 if (ret.second.length())
1397 if (mh->GetNumParams(cur_change == '+') > 0)
1398 /* Yes we're supposed to be sending out
1399 * the parameter. Make sure it goes
1401 newparams.push_back(ret.second);
1409 /* Update the parameters for FMODE with the new 'bounced' string */
1410 newparams[2] = modebounce;
1411 /* Only send it back the way it came, no need to send it anywhere else */
1412 DoOneToOne(this->Instance->Config->ServerName,"FMODE",newparams,sourceserv);
1413 ServerInstance->Log(DEBUG,"FMODE bounced intelligently, our TS less than theirs and the other server is NOT a uline.");
1417 ServerInstance->Log(DEBUG,"Allow modes, TS lower for sender");
1418 /* The server was ulined, but something iffy is up with the TS.
1419 * Sound the alarm bells!
1421 if ((this->Instance->ULine(sourceserv.c_str())) && (TS > ourTS))
1423 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());
1425 /* Allow the mode, route it to either server or user command handling */
1427 this->Instance->SendMode(modelist,n,who);
1429 this->Instance->CallCommandHandler("MODE", modelist, n, who);
1431 /* HOT POTATO! PASS IT ON! */
1432 DoOneToAllButSender(source,"FMODE",params,sourceserv);
1434 /* Are we supposed to free the userrec? */
1441 /* FTOPIC command */
1442 bool ForceTopic(std::string source, std::deque<std::string> ¶ms)
1444 if (params.size() != 4)
1446 time_t ts = atoi(params[1].c_str());
1447 std::string nsource = source;
1449 chanrec* c = this->Instance->FindChan(params[0]);
1452 if ((ts >= c->topicset) || (!*c->topic))
1454 std::string oldtopic = c->topic;
1455 strlcpy(c->topic,params[3].c_str(),MAXTOPIC);
1456 strlcpy(c->setby,params[2].c_str(),NICKMAX-1);
1458 /* if the topic text is the same as the current topic,
1459 * dont bother to send the TOPIC command out, just silently
1460 * update the set time and set nick.
1462 if (oldtopic != params[3])
1464 userrec* user = this->Instance->FindNick(source);
1467 c->WriteChannelWithServ(source.c_str(), "TOPIC %s :%s", c->name, c->topic);
1471 c->WriteChannel(user, "TOPIC %s :%s", c->name, c->topic);
1472 nsource = user->server;
1474 /* all done, send it on its way */
1475 params[3] = ":" + params[3];
1476 DoOneToAllButSender(source,"FTOPIC",params,nsource);
1485 /* FJOIN, similar to unreal SJOIN */
1486 bool ForceJoin(std::string source, std::deque<std::string> ¶ms)
1488 if (params.size() < 3)
1492 char modestring[MAXBUF];
1493 char* mode_users[127];
1494 memset(&mode_users,0,sizeof(mode_users));
1495 mode_users[0] = first;
1496 mode_users[1] = modestring;
1497 strcpy(modestring,"+");
1498 unsigned int modectr = 2;
1500 userrec* who = NULL;
1501 std::string channel = params[0];
1502 time_t TS = atoi(params[1].c_str());
1505 chanrec* chan = this->Instance->FindChan(channel);
1510 strlcpy(mode_users[0],channel.c_str(),MAXBUF);
1512 /* default is a high value, which if we dont have this
1513 * channel will let the other side apply their modes.
1515 time_t ourTS = time(NULL)+600;
1516 chanrec* us = this->Instance->FindChan(channel);
1522 ServerInstance->Log(DEBUG,"FJOIN detected, our TS=%lu, their TS=%lu",ourTS,TS);
1524 irc::tokenstream users(params[2]);
1525 std::string item = "*";
1527 /* do this first, so our mode reversals are correctly received by other servers
1528 * if there is a TS collision.
1530 params[2] = ":" + params[2];
1531 DoOneToAllButSender(source,"FJOIN",params,source);
1534 item = users.GetToken();
1535 /* process one user at a time, applying modes. */
1536 char* usr = (char*)item.c_str();
1537 /* Safety check just to make sure someones not sent us an FJOIN full of spaces
1538 * (is this even possible?) */
1541 char* permissions = usr;
1543 while ((*permissions) && (*permissions != ','))
1545 ModeHandler* mh = ServerInstance->Modes->FindPrefix(*permissions);
1549 charlcat(modestring,mh->GetModeChar(),MAXBUF);
1553 this->Instance->WriteOpers("ERROR: We received a user with an unknown prefix '%c'. Closed connection to avoid a desync.",mh->GetPrefix());
1554 this->WriteLine(std::string("ERROR :Invalid prefix '")+mh->GetModeChar()+"' in FJOIN");
1562 /* Did they get any modes? How many times? */
1563 for (int k = 0; k < ntimes; k++)
1564 mode_users[modectr++] = strdup(usr); // XXX
1566 who = this->Instance->FindNick(usr);
1569 chanrec::JoinUser(this->Instance, who, channel.c_str(), true, key);
1570 if (modectr >= (MAXMODES-1))
1572 /* theres a mode for this user. push them onto the mode queue, and flush it
1573 * if there are more than MAXMODES to go.
1575 if ((ourTS >= TS) || (this->Instance->ULine(who->server)))
1577 /* We also always let u-lined clients win, no matter what the TS value */
1578 ServerInstance->Log(DEBUG,"Our our channel newer than theirs, accepting their modes");
1579 this->Instance->SendMode((const char**)mode_users,modectr,who);
1582 ServerInstance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",us->name,ourTS,TS);
1589 ServerInstance->Log(DEBUG,"Their channel newer than ours, bouncing their modes");
1590 /* bouncy bouncy! */
1591 std::deque<std::string> params;
1592 /* modes are now being UNSET... */
1593 *mode_users[1] = '-';
1594 for (unsigned int x = 0; x < modectr; x++)
1598 params.push_back(ConvToStr(us->age));
1600 params.push_back(mode_users[x]);
1603 // tell everyone to bounce the modes. bad modes, bad!
1604 DoOneToMany(this->Instance->Config->ServerName,"FMODE",params);
1606 strcpy(mode_users[1],"+");
1607 for (unsigned int f = 2; f < modectr; f++)
1608 free(mode_users[f]);
1614 for (unsigned int f = 2; f < modectr; f++)
1615 free(mode_users[f]);
1617 this->WriteLine("ERROR :Invalid user '"+std::string(usr)+"' in FJOIN to '"+channel+"'");
1622 /* there werent enough modes built up to flush it during FJOIN,
1623 * or, there are a number left over. flush them out.
1625 if ((modectr > 2) && (who) && (us))
1629 ServerInstance->Log(DEBUG,"Our our channel newer than theirs, accepting their modes");
1630 this->Instance->SendMode((const char**)mode_users,modectr,who);
1633 ServerInstance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",us->name,ourTS,TS);
1640 ServerInstance->Log(DEBUG,"Their channel newer than ours, bouncing their modes");
1641 std::deque<std::string> params;
1642 *mode_users[1] = '-';
1643 for (unsigned int x = 0; x < modectr; x++)
1647 params.push_back(ConvToStr(us->age));
1649 params.push_back(mode_users[x]);
1651 DoOneToMany(this->Instance->Config->ServerName,"FMODE",params);
1654 for (unsigned int f = 2; f < modectr; f++)
1655 free(mode_users[f]);
1660 bool SyncChannelTS(std::string source, std::deque<std::string> ¶ms)
1662 if (params.size() >= 2)
1664 chanrec* c = this->Instance->FindChan(params[0]);
1667 time_t theirTS = atoi(params[1].c_str());
1668 time_t ourTS = c->age;
1669 if (ourTS >= theirTS)
1671 ServerInstance->Log(DEBUG,"Updating timestamp for %s, our timestamp was %lu and theirs is %lu",c->name,ourTS,theirTS);
1676 DoOneToAllButSender(this->Instance->Config->ServerName,"SYNCTS",params,source);
1681 bool IntroduceClient(std::string source, std::deque<std::string> ¶ms)
1683 if (params.size() < 8)
1685 if (params.size() > 8)
1687 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+params[1]+" :Invalid client introduction ("+params[1]+"?)");
1690 // NICK age nick host dhost ident +modes ip :gecos
1692 time_t age = atoi(params[0].c_str());
1694 /* This used to have a pretty craq'y loop doing the same thing,
1695 * now we just let the STL do the hard work (more efficiently)
1697 params[5] = params[5].substr(params[5].find_first_not_of('+'));
1699 const char* tempnick = params[1].c_str();
1700 ServerInstance->Log(DEBUG,"Introduce client %s!%s@%s",tempnick,params[4].c_str(),params[2].c_str());
1702 user_hash::iterator iter = this->Instance->clientlist.find(tempnick);
1704 if (iter != this->Instance->clientlist.end())
1707 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);
1708 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+tempnick+" :Nickname collision");
1712 userrec* _new = new userrec(this->Instance);
1713 this->Instance->clientlist[tempnick] = _new;
1714 _new->SetFd(FD_MAGIC_NUMBER);
1715 strlcpy(_new->nick, tempnick,NICKMAX-1);
1716 strlcpy(_new->host, params[2].c_str(),63);
1717 strlcpy(_new->dhost, params[3].c_str(),63);
1718 _new->server = this->Instance->FindServerNamePtr(source.c_str());
1719 strlcpy(_new->ident, params[4].c_str(),IDENTMAX);
1720 strlcpy(_new->fullname, params[7].c_str(),MAXGECOS);
1721 _new->registered = REG_ALL;
1724 for (std::string::iterator v = params[5].begin(); v != params[5].end(); v++)
1725 _new->modes[(*v)-65] = 1;
1727 #ifdef SUPPORT_IP6LINKS
1728 if (params[6].find_first_of(":") != std::string::npos)
1729 _new->SetSockAddr(AF_INET6, params[6].c_str(), 0);
1732 _new->SetSockAddr(AF_INET, params[6].c_str(), 0);
1734 this->Instance->SNO->WriteToSnoMask('C',"Client connecting at %s: %s!%s@%s [%s]",_new->server,_new->nick,_new->ident,_new->host, _new->GetIPString());
1736 params[7] = ":" + params[7];
1737 DoOneToAllButSender(source,"NICK",params,source);
1739 // Increment the Source Servers User Count..
1740 TreeServer* SourceServer = FindServer(source);
1743 ServerInstance->Log(DEBUG,"Found source server of %s",_new->nick);
1744 SourceServer->AddUserCount();
1750 /* Send one or more FJOINs for a channel of users.
1751 * If the length of a single line is more than 480-NICKMAX
1752 * in length, it is split over multiple lines.
1754 void SendFJoins(TreeServer* Current, chanrec* c)
1756 ServerInstance->Log(DEBUG,"Sending FJOINs to other server for %s",c->name);
1758 std::string individual_halfops = std::string(":")+this->Instance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age);
1760 size_t dlen, curlen;
1761 dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,c->name,(unsigned long)c->age);
1763 char* ptr = list + dlen;
1765 CUList *ulist = c->GetUsers();
1766 std::vector<userrec*> specific_halfop;
1767 std::vector<userrec*> specific_voice;
1768 std::string modes = "";
1769 std::string params = "";
1771 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1773 // The first parameter gets a : before it
1774 size_t ptrlen = snprintf(ptr, MAXBUF, " %s%s,%s", !numusers ? ":" : "", c->GetAllPrefixChars(i->second), i->second->nick);
1781 if (curlen > (480-NICKMAX))
1783 this->WriteLine(list);
1784 dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,c->name,(unsigned long)c->age);
1792 this->WriteLine(list);
1794 for (BanList::iterator b = c->bans.begin(); b != c->bans.end(); b++)
1797 params.append(b->data).append(" ");
1799 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age)+" +"+c->ChanModes(true)+modes+" "+params);
1802 /* Send G, Q, Z and E lines */
1803 void SendXLines(TreeServer* Current)
1806 std::string n = this->Instance->Config->ServerName;
1807 const char* sn = n.c_str();
1809 /* Yes, these arent too nice looking, but they get the job done */
1810 for (std::vector<ZLine>::iterator i = Instance->XLines->zlines.begin(); i != Instance->XLines->zlines.end(); i++, iterations++)
1812 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);
1813 this->WriteLine(data);
1815 for (std::vector<QLine>::iterator i = Instance->XLines->qlines.begin(); i != Instance->XLines->qlines.end(); i++, iterations++)
1817 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);
1818 this->WriteLine(data);
1820 for (std::vector<GLine>::iterator i = Instance->XLines->glines.begin(); i != Instance->XLines->glines.end(); i++, iterations++)
1822 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);
1823 this->WriteLine(data);
1825 for (std::vector<ELine>::iterator i = Instance->XLines->elines.begin(); i != Instance->XLines->elines.end(); i++, iterations++)
1827 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);
1828 this->WriteLine(data);
1830 for (std::vector<ZLine>::iterator i = Instance->XLines->pzlines.begin(); i != Instance->XLines->pzlines.end(); i++, iterations++)
1832 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);
1833 this->WriteLine(data);
1835 for (std::vector<QLine>::iterator i = Instance->XLines->pqlines.begin(); i != Instance->XLines->pqlines.end(); i++, iterations++)
1837 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);
1838 this->WriteLine(data);
1840 for (std::vector<GLine>::iterator i = Instance->XLines->pglines.begin(); i != Instance->XLines->pglines.end(); i++, iterations++)
1842 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);
1843 this->WriteLine(data);
1845 for (std::vector<ELine>::iterator i = Instance->XLines->pelines.begin(); i != Instance->XLines->pelines.end(); i++, iterations++)
1847 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);
1848 this->WriteLine(data);
1852 /* Send channel modes and topics */
1853 void SendChannelModes(TreeServer* Current)
1856 std::deque<std::string> list;
1858 std::string n = this->Instance->Config->ServerName;
1859 const char* sn = n.c_str();
1860 for (chan_hash::iterator c = this->Instance->chanlist.begin(); c != this->Instance->chanlist.end(); c++, iterations++)
1862 SendFJoins(Current, c->second);
1863 if (*c->second->topic)
1865 snprintf(data,MAXBUF,":%s FTOPIC %s %lu %s :%s",sn,c->second->name,(unsigned long)c->second->topicset,c->second->setby,c->second->topic);
1866 this->WriteLine(data);
1868 FOREACH_MOD_I(this->Instance,I_OnSyncChannel,OnSyncChannel(c->second,(Module*)TreeProtocolModule,(void*)this));
1870 c->second->GetExtList(list);
1871 for (unsigned int j = 0; j < list.size(); j++)
1873 FOREACH_MOD_I(this->Instance,I_OnSyncChannelMetaData,OnSyncChannelMetaData(c->second,(Module*)TreeProtocolModule,(void*)this,list[j]));
1878 /* send all users and their oper state/modes */
1879 void SendUsers(TreeServer* Current)
1882 std::deque<std::string> list;
1884 for (user_hash::iterator u = this->Instance->clientlist.begin(); u != this->Instance->clientlist.end(); u++, iterations++)
1886 if (u->second->registered == REG_ALL)
1888 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);
1889 this->WriteLine(data);
1890 if (*u->second->oper)
1892 this->WriteLine(":"+std::string(u->second->nick)+" OPERTYPE "+std::string(u->second->oper));
1894 if (*u->second->awaymsg)
1896 this->WriteLine(":"+std::string(u->second->nick)+" AWAY :"+std::string(u->second->awaymsg));
1898 FOREACH_MOD_I(this->Instance,I_OnSyncUser,OnSyncUser(u->second,(Module*)TreeProtocolModule,(void*)this));
1900 u->second->GetExtList(list);
1901 for (unsigned int j = 0; j < list.size(); j++)
1903 FOREACH_MOD_I(this->Instance,I_OnSyncUserMetaData,OnSyncUserMetaData(u->second,(Module*)TreeProtocolModule,(void*)this,list[j]));
1909 /* This function is called when we want to send a netburst to a local
1910 * server. There is a set order we must do this, because for example
1911 * users require their servers to exist, and channels require their
1912 * users to exist. You get the idea.
1914 void DoBurst(TreeServer* s)
1916 std::string burst = "BURST "+ConvToStr(time(NULL));
1917 std::string endburst = "ENDBURST";
1918 // Because by the end of the netburst, it could be gone!
1919 std::string name = s->GetName();
1920 this->Instance->SNO->WriteToSnoMask('l',"Bursting to \2"+name+"\2.");
1921 this->WriteLine(burst);
1922 /* send our version string */
1923 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" VERSION :"+this->Instance->GetVersionString());
1924 /* Send server tree */
1925 this->SendServers(TreeRoot,s,1);
1926 /* Send users and their oper status */
1928 /* Send everything else (channel modes, xlines etc) */
1929 this->SendChannelModes(s);
1930 this->SendXLines(s);
1931 FOREACH_MOD_I(this->Instance,I_OnSyncOtherMetaData,OnSyncOtherMetaData((Module*)TreeProtocolModule,(void*)this));
1932 this->WriteLine(endburst);
1933 this->Instance->SNO->WriteToSnoMask('l',"Finished bursting to \2"+name+"\2.");
1936 /* This function is called when we receive data from a remote
1937 * server. We buffer the data in a std::string (it doesnt stay
1938 * there for long), reading using InspSocket::Read() which can
1939 * read up to 16 kilobytes in one operation.
1941 * IF THIS FUNCTION RETURNS FALSE, THE CORE CLOSES AND DELETES
1942 * THE SOCKET OBJECT FOR US.
1944 virtual bool OnDataReady()
1946 char* data = this->Read();
1947 /* Check that the data read is a valid pointer and it has some content */
1950 this->in_buffer.append(data);
1951 /* While there is at least one new line in the buffer,
1952 * do something useful (we hope!) with it.
1954 while (in_buffer.find("\n") != std::string::npos)
1956 std::string ret = in_buffer.substr(0,in_buffer.find("\n")-1);
1957 in_buffer = in_buffer.substr(in_buffer.find("\n")+1,in_buffer.length()-in_buffer.find("\n"));
1958 if (ret.find("\r") != std::string::npos)
1959 ret = in_buffer.substr(0,in_buffer.find("\r")-1);
1960 /* Process this one, abort if it
1961 * didnt return true.
1967 memset(result,0,1024);
1969 ServerInstance->Log(DEBUG,"Original string '%s'",ret.c_str());
1970 /* ERROR + CAPAB is still allowed unencryped */
1971 if ((ret.substr(0,7) != "ERROR :") && (ret.substr(0,6) != "CAPAB "))
1973 int nbytes = from64tobits(out, ret.c_str(), 1024);
1974 if ((nbytes > 0) && (nbytes < 1024))
1976 ServerInstance->Log(DEBUG,"m_spanningtree: decrypt %d bytes",nbytes);
1977 ctx_in->Decrypt(out, result, nbytes, 0);
1978 for (int t = 0; t < nbytes; t++)
1979 if (result[t] == '\7') result[t] = 0;
1984 if (!this->ProcessLine(ret))
1986 ServerInstance->Log(DEBUG,"ProcessLine says no!");
1992 /* EAGAIN returns an empty but non-NULL string, so this
1993 * evaluates to TRUE for EAGAIN but to FALSE for EOF.
1995 return (data && !*data);
1998 int WriteLine(std::string line)
2000 ServerInstance->Log(DEBUG,"OUT: %s",line.c_str());
2004 char result64[10240];
2005 if (this->keylength)
2007 // pad it to the key length
2008 int n = this->keylength - (line.length() % this->keylength);
2011 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);
2012 line.append(n,'\7');
2015 unsigned int ll = line.length();
2016 ctx_out->Encrypt(line.c_str(), result, ll, 0);
2017 to64frombits((unsigned char*)result64,(unsigned char*)result,ll);
2019 //int from64tobits(char *out, const char *in, int maxlen);
2021 return this->Write(line + "\r\n");
2024 /* Handle ERROR command */
2025 bool Error(std::deque<std::string> ¶ms)
2027 if (params.size() < 1)
2029 this->Instance->SNO->WriteToSnoMask('l',"ERROR from %s: %s",(InboundServerName != "" ? InboundServerName.c_str() : myhost.c_str()),params[0].c_str());
2030 /* we will return false to cause the socket to close. */
2034 /* remote MOTD. leet, huh? */
2035 bool Motd(std::string prefix, std::deque<std::string> ¶ms)
2037 if (params.size() > 0)
2039 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
2041 /* It's for our server */
2042 string_list results;
2043 userrec* source = this->Instance->FindNick(prefix);
2047 std::deque<std::string> par;
2048 par.push_back(prefix);
2051 if (!ServerInstance->Config->MOTD.size())
2053 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 422 "+source->nick+" :Message of the day file is missing.";
2054 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2058 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 375 "+source->nick+" :"+ServerInstance->Config->ServerName+" message of the day";
2059 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2061 for (unsigned int i = 0; i < ServerInstance->Config->MOTD.size(); i++)
2063 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 372 "+source->nick+" :- "+ServerInstance->Config->MOTD[i];
2064 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2067 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 376 "+source->nick+" End of message of the day.";
2068 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2074 userrec* source = this->Instance->FindNick(prefix);
2076 DoOneToOne(prefix, "MOTD", params, params[0]);
2082 /* remote ADMIN. leet, huh? */
2083 bool Admin(std::string prefix, std::deque<std::string> ¶ms)
2085 if (params.size() > 0)
2087 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
2089 /* It's for our server */
2090 string_list results;
2091 userrec* source = this->Instance->FindNick(prefix);
2095 std::deque<std::string> par;
2096 par.push_back(prefix);
2099 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 256 "+source->nick+" :Administrative info for "+ServerInstance->Config->ServerName;
2100 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2102 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 257 "+source->nick+" :Name - "+ServerInstance->Config->AdminName;
2103 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2105 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 258 "+source->nick+" :Nickname - "+ServerInstance->Config->AdminNick;
2106 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2108 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 258 "+source->nick+" :E-Mail - "+ServerInstance->Config->AdminEmail;
2109 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2115 userrec* source = this->Instance->FindNick(prefix);
2117 DoOneToOne(prefix, "ADMIN", params, params[0]);
2123 bool Stats(std::string prefix, std::deque<std::string> ¶ms)
2125 /* Get the reply to a STATS query if it matches this servername,
2126 * and send it back as a load of PUSH queries
2128 if (params.size() > 1)
2130 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[1]))
2132 /* It's for our server */
2133 string_list results;
2134 userrec* source = this->Instance->FindNick(prefix);
2137 std::deque<std::string> par;
2138 par.push_back(prefix);
2140 DoStats(this->Instance, *(params[0].c_str()), source, results);
2141 for (size_t i = 0; i < results.size(); i++)
2143 par[1] = "::" + results[i];
2144 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2151 userrec* source = this->Instance->FindNick(prefix);
2153 DoOneToOne(prefix, "STATS", params, params[1]);
2160 /* Because the core won't let users or even SERVERS set +o,
2161 * we use the OPERTYPE command to do this.
2163 bool OperType(std::string prefix, std::deque<std::string> ¶ms)
2165 if (params.size() != 1)
2167 ServerInstance->Log(DEBUG,"Received invalid oper type from %s",prefix.c_str());
2170 std::string opertype = params[0];
2171 userrec* u = this->Instance->FindNick(prefix);
2174 u->modes[UM_OPERATOR] = 1;
2175 strlcpy(u->oper,opertype.c_str(),NICKMAX-1);
2176 DoOneToAllButSender(u->nick,"OPERTYPE",params,u->server);
2181 /* Because Andy insists that services-compatible servers must
2182 * implement SVSNICK and SVSJOIN, that's exactly what we do :p
2184 bool ForceNick(std::string prefix, std::deque<std::string> ¶ms)
2186 if (params.size() < 3)
2189 userrec* u = this->Instance->FindNick(params[0]);
2193 DoOneToAllButSender(prefix,"SVSNICK",params,prefix);
2196 std::deque<std::string> par;
2197 par.push_back(params[1]);
2198 /* This is not required as one is sent in OnUserPostNick below
2200 //DoOneToMany(u->nick,"NICK",par);
2201 if (!u->ForceNickChange(params[1].c_str()))
2203 userrec::QuitUser(this->Instance, u, "Nickname collision");
2206 u->age = atoi(params[2].c_str());
2212 bool ServiceJoin(std::string prefix, std::deque<std::string> ¶ms)
2214 if (params.size() < 2)
2217 userrec* u = this->Instance->FindNick(params[0]);
2221 chanrec::JoinUser(this->Instance, u, params[1].c_str(), false);
2222 DoOneToAllButSender(prefix,"SVSJOIN",params,prefix);
2227 bool RemoteRehash(std::string prefix, std::deque<std::string> ¶ms)
2229 if (params.size() < 1)
2232 std::string servermask = params[0];
2234 if (this->Instance->MatchText(this->Instance->Config->ServerName,servermask))
2236 this->Instance->SNO->WriteToSnoMask('l',"Remote rehash initiated from server \002"+prefix+"\002.");
2237 this->Instance->RehashServer();
2238 ReadConfiguration(false);
2240 DoOneToAllButSender(prefix,"REHASH",params,prefix);
2244 bool RemoteKill(std::string prefix, std::deque<std::string> ¶ms)
2246 if (params.size() != 2)
2249 std::string nick = params[0];
2250 userrec* u = this->Instance->FindNick(prefix);
2251 userrec* who = this->Instance->FindNick(nick);
2255 /* Prepend kill source, if we don't have one */
2256 std::string sourceserv = prefix;
2259 sourceserv = u->server;
2261 if (*(params[1].c_str()) != '[')
2263 params[1] = "[" + sourceserv + "] Killed (" + params[1] +")";
2265 std::string reason = params[1];
2266 params[1] = ":" + params[1];
2267 DoOneToAllButSender(prefix,"KILL",params,sourceserv);
2268 who->Write(":%s KILL %s :%s (%s)", sourceserv.c_str(), who->nick, sourceserv.c_str(), reason.c_str());
2269 userrec::QuitUser(this->Instance,who,reason);
2274 bool LocalPong(std::string prefix, std::deque<std::string> ¶ms)
2276 if (params.size() < 1)
2279 if (params.size() == 1)
2281 TreeServer* ServerSource = FindServer(prefix);
2284 ServerSource->SetPingFlag();
2289 std::string forwardto = params[1];
2290 if (forwardto == this->Instance->Config->ServerName)
2293 * this is a PONG for us
2294 * if the prefix is a user, check theyre local, and if they are,
2295 * dump the PONG reply back to their fd. If its a server, do nowt.
2296 * Services might want to send these s->s, but we dont need to yet.
2298 userrec* u = this->Instance->FindNick(prefix);
2302 u->WriteServ("PONG %s %s",params[0].c_str(),params[1].c_str());
2307 // not for us, pass it on :)
2308 DoOneToOne(prefix,"PONG",params,forwardto);
2315 bool MetaData(std::string prefix, std::deque<std::string> ¶ms)
2317 if (params.size() < 3)
2320 TreeServer* ServerSource = FindServer(prefix);
2324 if (params[0] == "*")
2326 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_OTHER,NULL,params[1],params[2]));
2328 else if (*(params[0].c_str()) == '#')
2330 chanrec* c = this->Instance->FindChan(params[0]);
2333 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]));
2336 else if (*(params[0].c_str()) != '#')
2338 userrec* u = this->Instance->FindNick(params[0]);
2341 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2]));
2346 params[2] = ":" + params[2];
2347 DoOneToAllButSender(prefix,"METADATA",params,prefix);
2351 bool ServerVersion(std::string prefix, std::deque<std::string> ¶ms)
2353 if (params.size() < 1)
2356 TreeServer* ServerSource = FindServer(prefix);
2360 ServerSource->SetVersion(params[0]);
2362 params[0] = ":" + params[0];
2363 DoOneToAllButSender(prefix,"VERSION",params,prefix);
2367 bool ChangeHost(std::string prefix, std::deque<std::string> ¶ms)
2369 if (params.size() < 1)
2372 userrec* u = this->Instance->FindNick(prefix);
2376 u->ChangeDisplayedHost(params[0].c_str());
2377 DoOneToAllButSender(prefix,"FHOST",params,u->server);
2382 bool AddLine(std::string prefix, std::deque<std::string> ¶ms)
2384 if (params.size() < 6)
2387 bool propogate = false;
2389 switch (*(params[0].c_str()))
2392 propogate = ServerInstance->XLines->add_zline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2393 ServerInstance->XLines->zline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2396 propogate = ServerInstance->XLines->add_qline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2397 ServerInstance->XLines->qline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2400 propogate = ServerInstance->XLines->add_eline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2401 ServerInstance->XLines->eline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2404 propogate = ServerInstance->XLines->add_gline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2405 ServerInstance->XLines->gline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2408 propogate = ServerInstance->XLines->add_kline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2411 /* Just in case... */
2412 this->Instance->SNO->WriteToSnoMask('x',"\2WARNING\2: Invalid xline type '"+params[0]+"' sent by server "+prefix+", ignored!");
2417 /* Send it on its way */
2420 if (atoi(params[4].c_str()))
2422 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());
2426 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());
2428 params[5] = ":" + params[5];
2429 DoOneToAllButSender(prefix,"ADDLINE",params,prefix);
2431 if (!this->bursting)
2433 ServerInstance->Log(DEBUG,"Applying lines...");
2434 ServerInstance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
2439 bool ChangeName(std::string prefix, std::deque<std::string> ¶ms)
2441 if (params.size() < 1)
2444 userrec* u = this->Instance->FindNick(prefix);
2448 u->ChangeName(params[0].c_str());
2449 params[0] = ":" + params[0];
2450 DoOneToAllButSender(prefix,"FNAME",params,u->server);
2455 bool Whois(std::string prefix, std::deque<std::string> ¶ms)
2457 if (params.size() < 1)
2460 ServerInstance->Log(DEBUG,"In IDLE command");
2461 userrec* u = this->Instance->FindNick(prefix);
2465 ServerInstance->Log(DEBUG,"USER EXISTS: %s",u->nick);
2466 // an incoming request
2467 if (params.size() == 1)
2469 userrec* x = this->Instance->FindNick(params[0]);
2470 if ((x) && (IS_LOCAL(x)))
2472 userrec* x = this->Instance->FindNick(params[0]);
2473 ServerInstance->Log(DEBUG,"Got IDLE");
2474 char signon[MAXBUF];
2476 ServerInstance->Log(DEBUG,"Sending back IDLE 3");
2477 snprintf(signon,MAXBUF,"%lu",(unsigned long)x->signon);
2478 snprintf(idle,MAXBUF,"%lu",(unsigned long)abs((x->idle_lastmsg)-time(NULL)));
2479 std::deque<std::string> par;
2480 par.push_back(prefix);
2481 par.push_back(signon);
2482 par.push_back(idle);
2483 // ours, we're done, pass it BACK
2484 DoOneToOne(params[0],"IDLE",par,u->server);
2488 // not ours pass it on
2489 DoOneToOne(prefix,"IDLE",params,x->server);
2492 else if (params.size() == 3)
2494 std::string who_did_the_whois = params[0];
2495 userrec* who_to_send_to = this->Instance->FindNick(who_did_the_whois);
2496 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
2498 ServerInstance->Log(DEBUG,"Got final IDLE");
2499 // an incoming reply to a whois we sent out
2500 std::string nick_whoised = prefix;
2501 unsigned long signon = atoi(params[1].c_str());
2502 unsigned long idle = atoi(params[2].c_str());
2503 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
2504 do_whois(this->Instance,who_to_send_to,u,signon,idle,nick_whoised.c_str());
2508 // not ours, pass it on
2509 DoOneToOne(prefix,"IDLE",params,who_to_send_to->server);
2516 bool Push(std::string prefix, std::deque<std::string> ¶ms)
2518 if (params.size() < 2)
2521 userrec* u = this->Instance->FindNick(params[0]);
2528 u->Write(params[1]);
2532 // continue the raw onwards
2533 params[1] = ":" + params[1];
2534 DoOneToOne(prefix,"PUSH",params,u->server);
2539 bool Time(std::string prefix, std::deque<std::string> ¶ms)
2541 // :source.server TIME remote.server sendernick
2542 // :remote.server TIME source.server sendernick TS
2543 if (params.size() == 2)
2545 // someone querying our time?
2546 if (this->Instance->Config->ServerName == params[0])
2548 userrec* u = this->Instance->FindNick(params[1]);
2552 snprintf(curtime,256,"%lu",(unsigned long)time(NULL));
2553 params.push_back(curtime);
2555 DoOneToOne(this->Instance->Config->ServerName,"TIME",params,params[0]);
2560 // not us, pass it on
2561 userrec* u = this->Instance->FindNick(params[1]);
2563 DoOneToOne(prefix,"TIME",params,params[0]);
2566 else if (params.size() == 3)
2568 // a response to a previous TIME
2569 userrec* u = this->Instance->FindNick(params[1]);
2570 if ((u) && (IS_LOCAL(u)))
2572 time_t rawtime = atol(params[2].c_str());
2573 struct tm * timeinfo;
2574 timeinfo = localtime(&rawtime);
2576 snprintf(tms,26,"%s",asctime(timeinfo));
2578 u->WriteServ("391 %s %s :%s",u->nick,prefix.c_str(),tms);
2583 DoOneToOne(prefix,"TIME",params,u->server);
2589 bool LocalPing(std::string prefix, std::deque<std::string> ¶ms)
2591 if (params.size() < 1)
2594 if (params.size() == 1)
2596 std::string stufftobounce = params[0];
2597 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" PONG "+stufftobounce);
2602 std::string forwardto = params[1];
2603 if (forwardto == this->Instance->Config->ServerName)
2605 // this is a ping for us, send back PONG to the requesting server
2606 params[1] = params[0];
2607 params[0] = forwardto;
2608 DoOneToOne(forwardto,"PONG",params,params[1]);
2612 // not for us, pass it on :)
2613 DoOneToOne(prefix,"PING",params,forwardto);
2619 bool RemoteServer(std::string prefix, std::deque<std::string> ¶ms)
2621 if (params.size() < 4)
2624 std::string servername = params[0];
2625 std::string password = params[1];
2626 // hopcount is not used for a remote server, we calculate this ourselves
2627 std::string description = params[3];
2628 TreeServer* ParentOfThis = FindServer(prefix);
2632 this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
2635 TreeServer* CheckDupe = FindServer(servername);
2638 this->WriteLine("ERROR :Server "+servername+" already exists!");
2639 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+servername+"\2 denied, already exists");
2642 TreeServer* Node = new TreeServer(this->Instance,servername,description,ParentOfThis,NULL);
2643 ParentOfThis->AddChild(Node);
2644 params[3] = ":" + params[3];
2645 DoOneToAllButSender(prefix,"SERVER",params,prefix);
2646 this->Instance->SNO->WriteToSnoMask('l',"Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
2650 bool Outbound_Reply_Server(std::deque<std::string> ¶ms)
2652 if (params.size() < 4)
2655 irc::string servername = params[0].c_str();
2656 std::string sname = params[0];
2657 std::string password = params[1];
2658 int hops = atoi(params[2].c_str());
2662 this->WriteLine("ERROR :Server too far away for authentication");
2663 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
2666 std::string description = params[3];
2667 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2669 if ((x->Name == servername) && (x->RecvPass == password))
2671 TreeServer* CheckDupe = FindServer(sname);
2674 this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
2675 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
2678 // Begin the sync here. this kickstarts the
2679 // other side, waiting in WAIT_AUTH_2 state,
2680 // into starting their burst, as it shows
2681 // that we're happy.
2682 this->LinkState = CONNECTED;
2683 // we should add the details of this server now
2684 // to the servers tree, as a child of the root
2686 TreeServer* Node = new TreeServer(this->Instance,sname,description,TreeRoot,this);
2687 TreeRoot->AddChild(Node);
2688 params[3] = ":" + params[3];
2689 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,sname);
2690 this->bursting = true;
2691 this->DoBurst(Node);
2695 this->WriteLine("ERROR :Invalid credentials");
2696 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
2700 bool Inbound_Server(std::deque<std::string> ¶ms)
2702 if (params.size() < 4)
2705 irc::string servername = params[0].c_str();
2706 std::string sname = params[0];
2707 std::string password = params[1];
2708 int hops = atoi(params[2].c_str());
2712 this->WriteLine("ERROR :Server too far away for authentication");
2713 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
2716 std::string description = params[3];
2717 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2719 if ((x->Name == servername) && (x->RecvPass == password))
2721 TreeServer* CheckDupe = FindServer(sname);
2724 this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
2725 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
2728 /* If the config says this link is encrypted, but the remote side
2729 * hasnt bothered to send the AES command before SERVER, then we
2730 * boot them off as we MUST have this connection encrypted.
2732 if ((x->EncryptionKey != "") && (!this->ctx_in))
2734 this->WriteLine("ERROR :This link requires AES encryption to be enabled. Plaintext connection refused.");
2735 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, remote server did not enable AES.");
2738 this->Instance->SNO->WriteToSnoMask('l',"Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] ("+description+")");
2739 this->InboundServerName = sname;
2740 this->InboundDescription = description;
2741 // this is good. Send our details: Our server name and description and hopcount of 0,
2742 // along with the sendpass from this block.
2743 this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc);
2744 // move to the next state, we are now waiting for THEM.
2745 this->LinkState = WAIT_AUTH_2;
2749 this->WriteLine("ERROR :Invalid credentials");
2750 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
2754 void Split(std::string line, std::deque<std::string> &n)
2757 irc::tokenstream tokens(line);
2759 while ((param = tokens.GetToken()) != "")
2764 bool ProcessLine(std::string line)
2766 std::deque<std::string> params;
2767 irc::string command;
2773 line = line.substr(0, line.find_first_of("\r\n"));
2775 ServerInstance->Log(DEBUG,"IN: %s", line.c_str());
2777 this->Split(line.c_str(),params);
2779 if ((params[0][0] == ':') && (params.size() > 1))
2781 prefix = params[0].substr(1);
2785 command = params[0].c_str();
2788 if ((!this->ctx_in) && (command == "AES"))
2790 std::string sserv = params[0];
2791 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2793 if ((x->EncryptionKey != "") && (x->Name == sserv))
2795 this->InitAES(x->EncryptionKey,sserv);
2801 else if ((this->ctx_in) && (command == "AES"))
2803 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());
2806 switch (this->LinkState)
2811 // Waiting for SERVER command from remote server. Server initiating
2812 // the connection sends the first SERVER command, listening server
2813 // replies with theirs if its happy, then if the initiator is happy,
2814 // it starts to send its net sync, which starts the merge, otherwise
2815 // it sends an ERROR.
2816 if (command == "PASS")
2818 /* Silently ignored */
2820 else if (command == "SERVER")
2822 return this->Inbound_Server(params);
2824 else if (command == "ERROR")
2826 return this->Error(params);
2828 else if (command == "USER")
2830 this->WriteLine("ERROR :Client connections to this port are prohibited.");
2833 else if (command == "CAPAB")
2835 return this->Capab(params);
2837 else if ((command == "U") || (command == "S"))
2839 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
2844 this->WriteLine("ERROR :Invalid command in negotiation phase.");
2849 // Waiting for start of other side's netmerge to say they liked our
2851 if (command == "SERVER")
2853 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
2857 else if ((command == "U") || (command == "S"))
2859 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
2862 else if (command == "BURST")
2866 /* If a time stamp is provided, try and check syncronization */
2867 time_t THEM = atoi(params[0].c_str());
2868 long delta = THEM-time(NULL);
2869 if ((delta < -600) || (delta > 600))
2871 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));
2872 this->WriteLine("ERROR :Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than ten minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!");
2875 else if ((delta < -60) || (delta > 60))
2877 this->Instance->SNO->WriteToSnoMask('l',"\2WARNING\2: Your clocks are out by %d seconds, please consider synching your clocks.",abs(delta));
2880 this->LinkState = CONNECTED;
2881 Node = new TreeServer(this->Instance,InboundServerName,InboundDescription,TreeRoot,this);
2882 TreeRoot->AddChild(Node);
2884 params.push_back(InboundServerName);
2885 params.push_back("*");
2886 params.push_back("1");
2887 params.push_back(":"+InboundDescription);
2888 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,InboundServerName);
2889 this->bursting = true;
2890 this->DoBurst(Node);
2892 else if (command == "ERROR")
2894 return this->Error(params);
2896 else if (command == "CAPAB")
2898 return this->Capab(params);
2903 this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
2907 if (command == "SERVER")
2909 // another server we connected to, which was in WAIT_AUTH_1 state,
2910 // has just sent us their credentials. If we get this far, theyre
2911 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
2912 // if we're happy with this, we should send our netburst which
2913 // kickstarts the merge.
2914 return this->Outbound_Reply_Server(params);
2916 else if (command == "ERROR")
2918 return this->Error(params);
2922 // This is the 'authenticated' state, when all passwords
2923 // have been exchanged and anything past this point is taken
2928 std::string direction = prefix;
2929 userrec* t = this->Instance->FindNick(prefix);
2932 direction = t->server;
2934 TreeServer* route_back_again = BestRouteTo(direction);
2935 if ((!route_back_again) || (route_back_again->GetSocket() != this))
2937 if (route_back_again)
2938 ServerInstance->Log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
2943 * When there is activity on the socket, reset the ping counter so
2944 * that we're not wasting bandwidth pinging an active server.
2946 route_back_again->SetNextPingTime(time(NULL) + 60);
2947 route_back_again->SetPingFlag();
2950 if (command == "SVSMODE")
2952 /* Services expects us to implement
2953 * SVSMODE. In inspircd its the same as
2958 std::string target = "";
2959 /* Yes, know, this is a mess. Its reasonably fast though as we're
2960 * working with std::string here.
2962 if ((command == "NICK") && (params.size() > 1))
2964 return this->IntroduceClient(prefix,params);
2966 else if (command == "FJOIN")
2968 return this->ForceJoin(prefix,params);
2970 else if (command == "STATS")
2972 return this->Stats(prefix, params);
2974 else if (command == "MOTD")
2976 return this->Motd(prefix, params);
2978 else if (command == "ADMIN")
2980 return this->Admin(prefix, params);
2982 else if (command == "SERVER")
2984 return this->RemoteServer(prefix,params);
2986 else if (command == "ERROR")
2988 return this->Error(params);
2990 else if (command == "OPERTYPE")
2992 return this->OperType(prefix,params);
2994 else if (command == "FMODE")
2996 return this->ForceMode(prefix,params);
2998 else if (command == "KILL")
3000 return this->RemoteKill(prefix,params);
3002 else if (command == "FTOPIC")
3004 return this->ForceTopic(prefix,params);
3006 else if (command == "REHASH")
3008 return this->RemoteRehash(prefix,params);
3010 else if (command == "METADATA")
3012 return this->MetaData(prefix,params);
3014 else if (command == "PING")
3017 * We just got a ping from a server that's bursting.
3018 * This can't be right, so set them to not bursting, and
3019 * apply their lines.
3023 this->bursting = false;
3024 ServerInstance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
3028 prefix = this->GetName();
3030 return this->LocalPing(prefix,params);
3032 else if (command == "PONG")
3035 * We just got a pong from a server that's bursting.
3036 * This can't be right, so set them to not bursting, and
3037 * apply their lines.
3041 this->bursting = false;
3042 ServerInstance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
3046 prefix = this->GetName();
3048 return this->LocalPong(prefix,params);
3050 else if (command == "VERSION")
3052 return this->ServerVersion(prefix,params);
3054 else if (command == "FHOST")
3056 return this->ChangeHost(prefix,params);
3058 else if (command == "FNAME")
3060 return this->ChangeName(prefix,params);
3062 else if (command == "ADDLINE")
3064 return this->AddLine(prefix,params);
3066 else if (command == "SVSNICK")
3070 prefix = this->GetName();
3072 return this->ForceNick(prefix,params);
3074 else if (command == "IDLE")
3076 return this->Whois(prefix,params);
3078 else if (command == "PUSH")
3080 return this->Push(prefix,params);
3082 else if (command == "TIME")
3084 return this->Time(prefix,params);
3086 else if ((command == "KICK") && (IsServer(prefix)))
3088 std::string sourceserv = this->myhost;
3089 if (params.size() == 3)
3091 userrec* user = this->Instance->FindNick(params[1]);
3092 chanrec* chan = this->Instance->FindChan(params[0]);
3095 if (!chan->ServerKickUser(user, params[2].c_str(), false))
3096 /* Yikes, the channels gone! */
3100 if (this->InboundServerName != "")
3102 sourceserv = this->InboundServerName;
3104 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
3106 else if (command == "SVSJOIN")
3110 prefix = this->GetName();
3112 return this->ServiceJoin(prefix,params);
3114 else if (command == "SQUIT")
3116 if (params.size() == 2)
3118 this->Squit(FindServer(params[0]),params[1]);
3122 else if (command == "ENDBURST")
3124 this->bursting = false;
3125 ServerInstance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
3126 std::string sourceserv = this->myhost;
3127 if (this->InboundServerName != "")
3129 sourceserv = this->InboundServerName;
3131 this->Instance->SNO->WriteToSnoMask('l',"Received end of netburst from \2%s\2",sourceserv.c_str());
3136 // not a special inter-server command.
3137 // Emulate the actual user doing the command,
3138 // this saves us having a huge ugly parser.
3139 userrec* who = this->Instance->FindNick(prefix);
3140 std::string sourceserv = this->myhost;
3141 if (this->InboundServerName != "")
3143 sourceserv = this->InboundServerName;
3147 if ((command == "NICK") && (params.size() > 0))
3149 /* On nick messages, check that the nick doesnt
3150 * already exist here. If it does, kill their copy,
3153 userrec* x = this->Instance->FindNick(params[0]);
3154 if ((x) && (x != who))
3156 std::deque<std::string> p;
3157 p.push_back(params[0]);
3158 p.push_back("Nickname collision ("+prefix+" -> "+params[0]+")");
3159 DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
3161 p.push_back(prefix);
3162 p.push_back("Nickname collision");
3163 DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
3164 userrec::QuitUser(this->Instance,x,"Nickname collision ("+prefix+" -> "+params[0]+")");
3165 userrec* y = this->Instance->FindNick(prefix);
3168 userrec::QuitUser(this->Instance,y,"Nickname collision");
3170 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
3174 target = who->server;
3175 const char* strparams[127];
3176 for (unsigned int q = 0; q < params.size(); q++)
3178 strparams[q] = params[q].c_str();
3180 if (!this->Instance->CallCommandHandler(command.c_str(), strparams, params.size(), who))
3182 this->WriteLine("ERROR :Unrecognised command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules");
3188 // its not a user. Its either a server, or somethings screwed up.
3189 if (IsServer(prefix))
3191 target = this->Instance->Config->ServerName;
3195 ServerInstance->Log(DEBUG,"Command with unknown origin '%s'",prefix.c_str());
3199 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
3208 virtual std::string GetName()
3210 std::string sourceserv = this->myhost;
3211 if (this->InboundServerName != "")
3213 sourceserv = this->InboundServerName;
3218 virtual void OnTimeout()
3220 if (this->LinkState == CONNECTING)
3222 this->Instance->SNO->WriteToSnoMask('l',"CONNECT: Connection to \002"+myhost+"\002 timed out.");
3226 virtual void OnClose()
3228 // Connection closed.
3229 // If the connection is fully up (state CONNECTED)
3230 // then propogate a netsplit to all peers.
3231 std::string quitserver = this->myhost;
3232 if (this->InboundServerName != "")
3234 quitserver = this->InboundServerName;
3236 TreeServer* s = FindServer(quitserver);
3239 Squit(s,"Remote host closed the connection");
3241 this->Instance->WriteOpers("Server '\2%s\2' closed the connection.",quitserver.c_str());
3244 virtual int OnIncomingConnection(int newsock, char* ip)
3246 /* To prevent anyone from attempting to flood opers/DDoS by connecting to the server port,
3247 * or discovering if this port is the server port, we don't allow connections from any
3248 * IPs for which we don't have a link block.
3252 found = (std::find(ValidIPs.begin(), ValidIPs.end(), ip) != ValidIPs.end());
3255 for (vector<std::string>::iterator i = ValidIPs.begin(); i != ValidIPs.end(); i++)
3256 if (MatchCIDR(ip, (*i).c_str()))
3261 this->Instance->WriteOpers("Server connection from %s denied (no link blocks with that IP address)", ip);
3266 TreeSocket* s = new TreeSocket(this->Instance, newsock, ip);
3267 s = s; /* Whinge whinge whinge, thats all GCC ever does. */
3272 /** This class is used to resolve server hostnames during /connect and autoconnect.
3273 * As of 1.1, the resolver system is seperated out from InspSocket, so we must do this
3274 * resolver step first ourselves if we need it. This is totally nonblocking, and will
3275 * callback to OnLookupComplete or OnError when completed. Once it has completed we
3276 * will have an IP address which we can then use to continue our connection.
3278 class ServernameResolver : public Resolver
3281 /** A copy of the Link tag info for what we're connecting to.
3282 * We take a copy, rather than using a pointer, just in case the
3283 * admin takes the tag away and rehashes while the domain is resolving.
3287 ServernameResolver(InspIRCd* Instance, const std::string &hostname, Link x) : Resolver(Instance, hostname, DNS_QUERY_FORWARD), MyLink(x)
3289 /* Nothing in here, folks */
3292 void OnLookupComplete(const std::string &result)
3294 /* Initiate the connection, now that we have an IP to use.
3295 * Passing a hostname directly to InspSocket causes it to
3296 * just bail and set its FD to -1.
3298 TreeServer* CheckDupe = FindServer(MyLink.Name.c_str());
3299 if (!CheckDupe) /* Check that nobody tried to connect it successfully while we were resolving */
3301 TreeSocket* newsocket = new TreeSocket(ServerInstance, result,MyLink.Port,false,10,MyLink.Name.c_str());
3302 if (newsocket->GetFd() > -1)
3308 /* Something barfed, show the opers */
3309 ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",MyLink.Name.c_str(),strerror(errno));
3315 void OnError(ResolverError e, const std::string &errormessage)
3318 ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: Unable to resolve hostname - %s",MyLink.Name.c_str(),errormessage.c_str());
3322 class SecurityIPResolver : public Resolver
3327 SecurityIPResolver(InspIRCd* Instance, const std::string &hostname, Link x) : Resolver(Instance, hostname, DNS_QUERY_FORWARD), MyLink(x)
3331 void OnLookupComplete(const std::string &result)
3333 ServerInstance->Log(DEBUG,"Security IP cache: Adding IP address '%s' for Link '%s'",result.c_str(),MyLink.Name.c_str());
3334 ValidIPs.push_back(result);
3337 void OnError(ResolverError e, const std::string &errormessage)
3339 ServerInstance->Log(DEBUG,"Could not resolve IP associated with Link '%s': %s",MyLink.Name.c_str(),errormessage.c_str());
3343 void AddThisServer(TreeServer* server, std::deque<TreeServer*> &list)
3345 for (unsigned int c = 0; c < list.size(); c++)
3347 if (list[c] == server)
3352 list.push_back(server);
3355 // returns a list of DIRECT servernames for a specific channel
3356 void GetListOfServersForChannel(chanrec* c, std::deque<TreeServer*> &list)
3358 CUList *ulist = c->GetUsers();
3359 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
3361 if (i->second->GetFd() < 0)
3363 TreeServer* best = BestRouteTo(i->second->server);
3365 AddThisServer(best,list);
3371 bool DoOneToAllButSenderRaw(std::string data, std::string omit, std::string prefix, irc::string command, std::deque<std::string> ¶ms)
3373 TreeServer* omitroute = BestRouteTo(omit);
3374 if ((command == "NOTICE") || (command == "PRIVMSG"))
3376 if (params.size() >= 2)
3379 if ((*(params[0].c_str()) == '@') || (*(params[0].c_str()) == '%') || (*(params[0].c_str()) == '+'))
3381 params[0] = params[0].substr(1, params[0].length()-1);
3383 if ((*(params[0].c_str()) != '#') && (*(params[0].c_str()) != '$'))
3385 // special routing for private messages/notices
3386 userrec* d = ServerInstance->FindNick(params[0]);
3389 std::deque<std::string> par;
3390 par.push_back(params[0]);
3391 par.push_back(":"+params[1]);
3392 DoOneToOne(prefix,command.c_str(),par,d->server);
3396 else if (*(params[0].c_str()) == '$')
3398 std::deque<std::string> par;
3399 par.push_back(params[0]);
3400 par.push_back(":"+params[1]);
3401 DoOneToAllButSender(prefix,command.c_str(),par,omitroute->GetName());
3406 ServerInstance->Log(DEBUG,"Channel privmsg going to chan %s",params[0].c_str());
3407 chanrec* c = ServerInstance->FindChan(params[0]);
3410 std::deque<TreeServer*> list;
3411 GetListOfServersForChannel(c,list);
3412 ServerInstance->Log(DEBUG,"Got a list of %d servers",list.size());
3413 unsigned int lsize = list.size();
3414 for (unsigned int i = 0; i < lsize; i++)
3416 TreeSocket* Sock = list[i]->GetSocket();
3417 if ((Sock) && (list[i]->GetName() != omit) && (omitroute != list[i]))
3419 ServerInstance->Log(DEBUG,"Writing privmsg to server %s",list[i]->GetName().c_str());
3420 Sock->WriteLine(data);
3428 unsigned int items = TreeRoot->ChildCount();
3429 for (unsigned int x = 0; x < items; x++)
3431 TreeServer* Route = TreeRoot->GetChild(x);
3432 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
3434 TreeSocket* Sock = Route->GetSocket();
3436 Sock->WriteLine(data);
3442 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string omit)
3444 TreeServer* omitroute = BestRouteTo(omit);
3445 std::string FullLine = ":" + prefix + " " + command;
3446 unsigned int words = params.size();
3447 for (unsigned int x = 0; x < words; x++)
3449 FullLine = FullLine + " " + params[x];
3451 unsigned int items = TreeRoot->ChildCount();
3452 for (unsigned int x = 0; x < items; x++)
3454 TreeServer* Route = TreeRoot->GetChild(x);
3455 // Send the line IF:
3456 // The route has a socket (its a direct connection)
3457 // The route isnt the one to be omitted
3458 // The route isnt the path to the one to be omitted
3459 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
3461 TreeSocket* Sock = Route->GetSocket();
3463 Sock->WriteLine(FullLine);
3469 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> ¶ms)
3471 std::string FullLine = ":" + prefix + " " + command;
3472 unsigned int words = params.size();
3473 for (unsigned int x = 0; x < words; x++)
3475 FullLine = FullLine + " " + params[x];
3477 unsigned int items = TreeRoot->ChildCount();
3478 for (unsigned int x = 0; x < items; x++)
3480 TreeServer* Route = TreeRoot->GetChild(x);
3481 if (Route && Route->GetSocket())
3483 TreeSocket* Sock = Route->GetSocket();
3485 Sock->WriteLine(FullLine);
3491 bool DoOneToMany(const char* prefix, const char* command, std::deque<std::string> ¶ms)
3493 std::string spfx = prefix;
3494 std::string scmd = command;
3495 return DoOneToMany(spfx, scmd, params);
3498 bool DoOneToAllButSender(const char* prefix, const char* command, std::deque<std::string> ¶ms, std::string omit)
3500 std::string spfx = prefix;
3501 std::string scmd = command;
3502 return DoOneToAllButSender(spfx, scmd, params, omit);
3505 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string target)
3507 TreeServer* Route = BestRouteTo(target);
3510 std::string FullLine = ":" + prefix + " " + command;
3511 unsigned int words = params.size();
3512 for (unsigned int x = 0; x < words; x++)
3514 FullLine = FullLine + " " + params[x];
3516 if (Route && Route->GetSocket())
3518 TreeSocket* Sock = Route->GetSocket();
3520 Sock->WriteLine(FullLine);
3530 std::vector<TreeSocket*> Bindings;
3532 void ReadConfiguration(bool rebind)
3534 Conf = new ConfigReader(ServerInstance);
3537 for (int j =0; j < Conf->Enumerate("bind"); j++)
3539 std::string Type = Conf->ReadValue("bind","type",j);
3540 std::string IP = Conf->ReadValue("bind","address",j);
3541 long Port = Conf->ReadInteger("bind","port",j,true);
3542 if (Type == "servers")
3548 TreeSocket* listener = new TreeSocket(ServerInstance, IP.c_str(),Port,true,10);
3549 if (listener->GetState() == I_LISTENING)
3551 Bindings.push_back(listener);
3555 ServerInstance->Log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port %d",Port);
3562 FlatLinks = Conf->ReadFlag("options","flatlinks",0);
3563 HideULines = Conf->ReadFlag("options","hideulines",0);
3566 for (int j =0; j < Conf->Enumerate("link"); j++)
3569 std::string Allow = Conf->ReadValue("link","allowmask",j);
3570 L.Name = (Conf->ReadValue("link","name",j)).c_str();
3571 L.IPAddr = Conf->ReadValue("link","ipaddr",j);
3572 L.Port = Conf->ReadInteger("link","port",j,true);
3573 L.SendPass = Conf->ReadValue("link","sendpass",j);
3574 L.RecvPass = Conf->ReadValue("link","recvpass",j);
3575 L.AutoConnect = Conf->ReadInteger("link","autoconnect",j,true);
3576 L.EncryptionKey = Conf->ReadValue("link","encryptionkey",j);
3577 L.HiddenFromStats = Conf->ReadFlag("link","hidden",j);
3578 L.NextConnectTime = time(NULL) + L.AutoConnect;
3579 /* Bugfix by brain, do not allow people to enter bad configurations */
3580 if ((L.IPAddr != "") && (L.RecvPass != "") && (L.SendPass != "") && (L.Name != "") && (L.Port))
3582 ValidIPs.push_back(L.IPAddr);
3585 ValidIPs.push_back(Allow);
3587 /* Needs resolving */
3589 if (insp_aton(L.IPAddr.c_str(), &binip) < 1)
3593 SecurityIPResolver* sr = new SecurityIPResolver(ServerInstance, L.IPAddr, L);
3594 ServerInstance->AddResolver(sr);
3596 catch (ModuleException& e)
3598 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
3602 LinkBlocks.push_back(L);
3603 ServerInstance->Log(DEBUG,"m_spanningtree: Read server %s with host %s:%d",L.Name.c_str(),L.IPAddr.c_str(),L.Port);
3609 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', IP address not defined!",L.Name.c_str());
3611 else if (L.RecvPass == "")
3613 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', recvpass not defined!",L.Name.c_str());
3615 else if (L.SendPass == "")
3617 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', sendpass not defined!",L.Name.c_str());
3619 else if (L.Name == "")
3621 ServerInstance->Log(DEFAULT,"Invalid configuration, link tag without a name!");
3625 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', no port specified!",L.Name.c_str());
3633 class ModuleSpanningTree : public Module
3635 std::vector<TreeSocket*> Bindings;
3638 unsigned int max_local;
3639 unsigned int max_global;
3640 cmd_rconnect* command_rconnect;
3644 ModuleSpanningTree(InspIRCd* Me)
3645 : Module::Module(Me), max_local(0), max_global(0)
3650 ::ServerInstance = Me;
3652 // Create the root of the tree
3653 TreeRoot = new TreeServer(ServerInstance, ServerInstance->Config->ServerName, ServerInstance->Config->ServerDesc);
3655 ReadConfiguration(true);
3657 command_rconnect = new cmd_rconnect(ServerInstance, this);
3658 ServerInstance->AddCommand(command_rconnect);
3661 void ShowLinks(TreeServer* Current, userrec* user, int hops)
3663 std::string Parent = TreeRoot->GetName();
3664 if (Current->GetParent())
3666 Parent = Current->GetParent()->GetName();
3668 for (unsigned int q = 0; q < Current->ChildCount(); q++)
3670 if ((HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str())))
3674 ShowLinks(Current->GetChild(q),user,hops+1);
3679 ShowLinks(Current->GetChild(q),user,hops+1);
3682 /* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */
3683 if ((HideULines) && (ServerInstance->ULine(Current->GetName().c_str())) && (!*user->oper))
3685 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());
3688 int CountLocalServs()
3690 return TreeRoot->ChildCount();
3695 return serverlist.size();
3698 void HandleLinks(const char** parameters, int pcnt, userrec* user)
3700 ShowLinks(TreeRoot,user,0);
3701 user->WriteServ("365 %s * :End of /LINKS list.",user->nick);
3705 void HandleLusers(const char** parameters, int pcnt, userrec* user)
3707 unsigned int n_users = ServerInstance->UserCount();
3709 /* Only update these when someone wants to see them, more efficient */
3710 if ((unsigned int)ServerInstance->LocalUserCount() > max_local)
3711 max_local = ServerInstance->LocalUserCount();
3712 if (n_users > max_global)
3713 max_global = n_users;
3715 user->WriteServ("251 %s :There are %d users and %d invisible on %d servers",user->nick,n_users-ServerInstance->InvisibleUserCount(),ServerInstance->InvisibleUserCount(),this->CountServs());
3716 if (ServerInstance->OperCount())
3717 user->WriteServ("252 %s %d :operator(s) online",user->nick,ServerInstance->OperCount());
3718 if (ServerInstance->UnregisteredUserCount())
3719 user->WriteServ("253 %s %d :unknown connections",user->nick,ServerInstance->UnregisteredUserCount());
3720 if (ServerInstance->ChannelCount())
3721 user->WriteServ("254 %s %d :channels formed",user->nick,ServerInstance->ChannelCount());
3722 user->WriteServ("254 %s :I have %d clients and %d servers",user->nick,ServerInstance->LocalUserCount(),this->CountLocalServs());
3723 user->WriteServ("265 %s :Current Local Users: %d Max: %d",user->nick,ServerInstance->LocalUserCount(),max_local);
3724 user->WriteServ("266 %s :Current Global Users: %d Max: %d",user->nick,n_users,max_global);
3728 // WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS.
3730 void ShowMap(TreeServer* Current, userrec* user, int depth, char matrix[128][80], float &totusers, float &totservers)
3734 for (int t = 0; t < depth; t++)
3736 matrix[line][t] = ' ';
3739 // For Aligning, we need to work out exactly how deep this thing is, and produce
3740 // a 'Spacer' String to compensate.
3743 memset(spacer,' ',40);
3744 if ((40 - Current->GetName().length() - depth) > 1) {
3745 spacer[40 - Current->GetName().length() - depth] = '\0';
3754 if (ServerInstance->clientlist.size() == 0) {
3755 // If there are no users, WHO THE HELL DID THE /MAP?!?!?!
3760 percent = ((float)Current->GetUserCount() / (float)ServerInstance->clientlist.size()) * 100;
3762 snprintf(text, 80, "%s %s%5d [%5.2f%%]", Current->GetName().c_str(), spacer, Current->GetUserCount(), percent);
3763 totusers += Current->GetUserCount();
3765 strlcpy(&matrix[line][depth],text,80);
3767 for (unsigned int q = 0; q < Current->ChildCount(); q++)
3769 if ((HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str())))
3773 ShowMap(Current->GetChild(q),user,(FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers);
3778 ShowMap(Current->GetChild(q),user,(FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers);
3784 int HandleMotd(const char** parameters, int pcnt, userrec* user)
3788 /* Remote MOTD, the server is within the 1st parameter */
3789 std::deque<std::string> params;
3790 params.push_back(parameters[0]);
3792 /* Send it out remotely, generate no reply yet */
3793 TreeServer* s = FindServerMask(parameters[0]);
3796 DoOneToOne(user->nick, "MOTD", params, s->GetName());
3800 user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]);
3807 int HandleAdmin(const char** parameters, int pcnt, userrec* user)
3811 /* Remote ADMIN, the server is within the 1st parameter */
3812 std::deque<std::string> params;
3813 params.push_back(parameters[0]);
3815 /* Send it out remotely, generate no reply yet */
3816 TreeServer* s = FindServerMask(parameters[0]);
3819 DoOneToOne(user->nick, "ADMIN", params, s->GetName());
3823 user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]);
3830 int HandleStats(const char** parameters, int pcnt, userrec* user)
3834 /* Remote STATS, the server is within the 2nd parameter */
3835 std::deque<std::string> params;
3836 params.push_back(parameters[0]);
3837 params.push_back(parameters[1]);
3838 /* Send it out remotely, generate no reply yet */
3839 TreeServer* s = FindServerMask(parameters[1]);
3842 params[1] = s->GetName();
3843 DoOneToOne(user->nick, "STATS", params, s->GetName());
3847 user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]);
3854 // Ok, prepare to be confused.
3855 // After much mulling over how to approach this, it struck me that
3856 // the 'usual' way of doing a /MAP isnt the best way. Instead of
3857 // keeping track of a ton of ascii characters, and line by line
3858 // under recursion working out where to place them using multiplications
3859 // and divisons, we instead render the map onto a backplane of characters
3860 // (a character matrix), then draw the branches as a series of "L" shapes
3861 // from the nodes. This is not only friendlier on CPU it uses less stack.
3863 void HandleMap(const char** parameters, int pcnt, userrec* user)
3865 // This array represents a virtual screen which we will
3866 // "scratch" draw to, as the console device of an irc
3867 // client does not provide for a proper terminal.
3869 float totservers = 0;
3870 char matrix[128][80];
3871 for (unsigned int t = 0; t < 128; t++)
3873 matrix[t][0] = '\0';
3876 // The only recursive bit is called here.
3877 ShowMap(TreeRoot,user,0,matrix,totusers,totservers);
3878 // Process each line one by one. The algorithm has a limit of
3879 // 128 servers (which is far more than a spanning tree should have
3880 // anyway, so we're ok). This limit can be raised simply by making
3881 // the character matrix deeper, 128 rows taking 10k of memory.
3882 for (int l = 1; l < line; l++)
3884 // scan across the line looking for the start of the
3885 // servername (the recursive part of the algorithm has placed
3886 // the servers at indented positions depending on what they
3888 int first_nonspace = 0;
3889 while (matrix[l][first_nonspace] == ' ')
3894 // Draw the `- (corner) section: this may be overwritten by
3895 // another L shape passing along the same vertical pane, becoming
3896 // a |- (branch) section instead.
3897 matrix[l][first_nonspace] = '-';
3898 matrix[l][first_nonspace-1] = '`';
3900 // Draw upwards until we hit the parent server, causing possibly
3901 // other corners (`-) to become branches (|-)
3902 while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`'))
3904 matrix[l2][first_nonspace-1] = '|';
3908 // dump the whole lot to the user. This is the easy bit, honest.
3909 for (int t = 0; t < line; t++)
3911 user->WriteServ("006 %s :%s",user->nick,&matrix[t][0]);
3913 float avg_users = totusers / totservers;
3914 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);
3915 user->WriteServ("007 %s :End of /MAP",user->nick);
3919 int HandleSquit(const char** parameters, int pcnt, userrec* user)
3921 TreeServer* s = FindServerMask(parameters[0]);
3926 user->WriteServ("NOTICE %s :*** SQUIT: Foolish mortal, you cannot make a server SQUIT itself! (%s matches local server name)",user->nick,parameters[0]);
3929 TreeSocket* sock = s->GetSocket();
3932 ServerInstance->Log(DEBUG,"Splitting server %s",s->GetName().c_str());
3933 ServerInstance->SNO->WriteToSnoMask('l',"SQUIT: Server \002%s\002 removed from network by %s",parameters[0],user->nick);
3934 sock->Squit(s,"Server quit by "+std::string(user->nick)+"!"+std::string(user->ident)+"@"+std::string(user->host));
3935 ServerInstance->SE->DelFd(sock);
3941 user->WriteServ("NOTICE %s :*** SQUIT: The server \002%s\002 is not directly connected.",user->nick,parameters[0]);
3946 user->WriteServ("NOTICE %s :*** SQUIT: The server \002%s\002 does not exist on the network.",user->nick,parameters[0]);
3951 int HandleTime(const char** parameters, int pcnt, userrec* user)
3953 if ((IS_LOCAL(user)) && (pcnt))
3955 TreeServer* found = FindServerMask(parameters[0]);
3958 // we dont' override for local server
3959 if (found == TreeRoot)
3962 std::deque<std::string> params;
3963 params.push_back(found->GetName());
3964 params.push_back(user->nick);
3965 DoOneToOne(ServerInstance->Config->ServerName,"TIME",params,found->GetName());
3969 user->WriteServ("402 %s %s :No such server",user->nick,parameters[0]);
3975 int HandleRemoteWhois(const char** parameters, int pcnt, userrec* user)
3977 if ((IS_LOCAL(user)) && (pcnt > 1))
3979 userrec* remote = ServerInstance->FindNick(parameters[1]);
3980 if ((remote) && (remote->GetFd() < 0))
3982 std::deque<std::string> params;
3983 params.push_back(parameters[1]);
3984 DoOneToOne(user->nick,"IDLE",params,remote->server);
3989 user->WriteServ("401 %s %s :No such nick/channel",user->nick, parameters[1]);
3990 user->WriteServ("318 %s %s :End of /WHOIS list.",user->nick, parameters[1]);
3997 void DoPingChecks(time_t curtime)
3999 for (unsigned int j = 0; j < TreeRoot->ChildCount(); j++)
4001 TreeServer* serv = TreeRoot->GetChild(j);
4002 TreeSocket* sock = serv->GetSocket();
4005 if (curtime >= serv->NextPingTime())
4007 if (serv->AnsweredLastPing())
4009 sock->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" PING "+serv->GetName());
4010 serv->SetNextPingTime(curtime + 60);
4014 // they didnt answer, boot them
4015 ServerInstance->SNO->WriteToSnoMask('l',"Server \002%s\002 pinged out",serv->GetName().c_str());
4016 sock->Squit(serv,"Ping timeout");
4017 ServerInstance->SE->DelFd(sock);
4027 void AutoConnectServers(time_t curtime)
4029 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
4031 if ((x->AutoConnect) && (curtime >= x->NextConnectTime))
4033 ServerInstance->Log(DEBUG,"Auto-Connecting %s",x->Name.c_str());
4034 x->NextConnectTime = curtime + x->AutoConnect;
4035 TreeServer* CheckDupe = FindServer(x->Name.c_str());
4038 // an autoconnected server is not connected. Check if its time to connect it
4039 ServerInstance->SNO->WriteToSnoMask('l',"AUTOCONNECT: Auto-connecting server \002%s\002 (%lu seconds until next attempt)",x->Name.c_str(),x->AutoConnect);
4043 /* Do we already have an IP? If so, no need to resolve it. */
4044 if (insp_aton(x->IPAddr.c_str(), &binip) > 0)
4046 TreeSocket* newsocket = new TreeSocket(ServerInstance, x->IPAddr,x->Port,false,10,x->Name.c_str());
4047 if (newsocket->GetFd() > -1)
4052 ServerInstance->SNO->WriteToSnoMask('l',"AUTOCONNECT: Error autoconnecting \002%s\002: %s.",x->Name.c_str(),strerror(errno));
4060 ServernameResolver* snr = new ServernameResolver(ServerInstance,x->IPAddr, *x);
4061 ServerInstance->AddResolver(snr);
4063 catch (ModuleException& e)
4065 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
4074 int HandleVersion(const char** parameters, int pcnt, userrec* user)
4076 // we've already checked if pcnt > 0, so this is safe
4077 TreeServer* found = FindServerMask(parameters[0]);
4080 std::string Version = found->GetVersion();
4081 user->WriteServ("351 %s :%s",user->nick,Version.c_str());
4082 if (found == TreeRoot)
4084 std::stringstream out(ServerInstance->Config->data005);
4085 std::string token = "";
4086 std::string line5 = "";
4087 int token_counter = 0;
4092 line5 = line5 + token + " ";
4095 if ((token_counter >= 13) || (out.eof() == true))
4097 user->WriteServ("005 %s %s:are supported by this server",user->nick,line5.c_str());
4106 user->WriteServ("402 %s %s :No such server",user->nick,parameters[0]);
4111 int HandleConnect(const char** parameters, int pcnt, userrec* user)
4113 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
4115 if (ServerInstance->MatchText(x->Name.c_str(),parameters[0]))
4117 TreeServer* CheckDupe = FindServer(x->Name.c_str());
4120 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);
4123 /* Do we already have an IP? If so, no need to resolve it. */
4124 if (insp_aton(x->IPAddr.c_str(), &binip) > 0)
4126 TreeSocket* newsocket = new TreeSocket(ServerInstance,x->IPAddr,x->Port,false,10,x->Name.c_str());
4127 if (newsocket->GetFd() > -1)
4132 ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(),strerror(errno));
4140 ServernameResolver* snr = new ServernameResolver(ServerInstance, x->IPAddr, *x);
4141 ServerInstance->AddResolver(snr);
4143 catch (ModuleException& e)
4145 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
4152 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());
4157 user->WriteServ("NOTICE %s :*** CONNECT: No server matching \002%s\002 could be found in the config file.",user->nick,parameters[0]);
4161 virtual int OnStats(char statschar, userrec* user, string_list &results)
4163 if (statschar == 'c')
4165 for (unsigned int i = 0; i < LinkBlocks.size(); i++)
4167 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');
4168 results.push_back(std::string(ServerInstance->Config->ServerName)+" 244 "+user->nick+" H * * "+LinkBlocks[i].Name.c_str());
4170 results.push_back(std::string(ServerInstance->Config->ServerName)+" 219 "+user->nick+" "+statschar+" :End of /STATS report");
4171 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);
4177 virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, bool validated)
4179 /* If the command doesnt appear to be valid, we dont want to mess with it. */
4183 if (command == "CONNECT")
4185 return this->HandleConnect(parameters,pcnt,user);
4187 else if (command == "STATS")
4189 return this->HandleStats(parameters,pcnt,user);
4191 else if (command == "MOTD")
4193 return this->HandleMotd(parameters,pcnt,user);
4195 else if (command == "ADMIN")
4197 return this->HandleAdmin(parameters,pcnt,user);
4199 else if (command == "SQUIT")
4201 return this->HandleSquit(parameters,pcnt,user);
4203 else if (command == "MAP")
4205 this->HandleMap(parameters,pcnt,user);
4208 else if ((command == "TIME") && (pcnt > 0))
4210 return this->HandleTime(parameters,pcnt,user);
4212 else if (command == "LUSERS")
4214 this->HandleLusers(parameters,pcnt,user);
4217 else if (command == "LINKS")
4219 this->HandleLinks(parameters,pcnt,user);
4222 else if (command == "WHOIS")
4227 return this->HandleRemoteWhois(parameters,pcnt,user);
4230 else if ((command == "VERSION") && (pcnt > 0))
4232 this->HandleVersion(parameters,pcnt,user);
4235 else if (ServerInstance->IsValidModuleCommand(command, pcnt, user))
4237 // this bit of code cleverly routes all module commands
4238 // to all remote severs *automatically* so that modules
4239 // can just handle commands locally, without having
4240 // to have any special provision in place for remote
4241 // commands and linking protocols.
4242 std::deque<std::string> params;
4244 for (int j = 0; j < pcnt; j++)
4246 if (strchr(parameters[j],' '))
4248 params.push_back(":" + std::string(parameters[j]));
4252 params.push_back(std::string(parameters[j]));
4255 ServerInstance->Log(DEBUG,"Globally route '%s'",command.c_str());
4256 DoOneToMany(user->nick,command,params);
4261 virtual void OnGetServerDescription(const std::string &servername,std::string &description)
4263 TreeServer* s = FindServer(servername);
4266 description = s->GetDesc();
4270 virtual void OnUserInvite(userrec* source,userrec* dest,chanrec* channel)
4272 if (IS_LOCAL(source))
4274 std::deque<std::string> params;
4275 params.push_back(dest->nick);
4276 params.push_back(channel->name);
4277 DoOneToMany(source->nick,"INVITE",params);
4281 virtual void OnPostLocalTopicChange(userrec* user, chanrec* chan, const std::string &topic)
4283 std::deque<std::string> params;
4284 params.push_back(chan->name);
4285 params.push_back(":"+topic);
4286 DoOneToMany(user->nick,"TOPIC",params);
4289 virtual void OnWallops(userrec* user, const std::string &text)
4293 std::deque<std::string> params;
4294 params.push_back(":"+text);
4295 DoOneToMany(user->nick,"WALLOPS",params);
4299 virtual void OnUserNotice(userrec* user, void* dest, int target_type, const std::string &text, char status)
4301 if (target_type == TYPE_USER)
4303 userrec* d = (userrec*)dest;
4304 if ((d->GetFd() < 0) && (IS_LOCAL(user)))
4306 std::deque<std::string> params;
4308 params.push_back(d->nick);
4309 params.push_back(":"+text);
4310 DoOneToOne(user->nick,"NOTICE",params,d->server);
4313 else if (target_type == TYPE_CHANNEL)
4317 chanrec *c = (chanrec*)dest;
4320 std::string cname = c->name;
4322 cname = status + cname;
4323 std::deque<TreeServer*> list;
4324 GetListOfServersForChannel(c,list);
4325 unsigned int ucount = list.size();
4326 for (unsigned int i = 0; i < ucount; i++)
4328 TreeSocket* Sock = list[i]->GetSocket();
4330 Sock->WriteLine(":"+std::string(user->nick)+" NOTICE "+cname+" :"+text);
4335 else if (target_type == TYPE_SERVER)
4339 char* target = (char*)dest;
4340 std::deque<std::string> par;
4341 par.push_back(target);
4342 par.push_back(":"+text);
4343 DoOneToMany(user->nick,"NOTICE",par);
4348 virtual void OnUserMessage(userrec* user, void* dest, int target_type, const std::string &text, char status)
4350 if (target_type == TYPE_USER)
4352 // route private messages which are targetted at clients only to the server
4353 // which needs to receive them
4354 userrec* d = (userrec*)dest;
4355 if ((d->GetFd() < 0) && (IS_LOCAL(user)))
4357 std::deque<std::string> params;
4359 params.push_back(d->nick);
4360 params.push_back(":"+text);
4361 DoOneToOne(user->nick,"PRIVMSG",params,d->server);
4364 else if (target_type == TYPE_CHANNEL)
4368 chanrec *c = (chanrec*)dest;
4371 std::string cname = c->name;
4373 cname = status + cname;
4374 std::deque<TreeServer*> list;
4375 GetListOfServersForChannel(c,list);
4376 unsigned int ucount = list.size();
4377 for (unsigned int i = 0; i < ucount; i++)
4379 TreeSocket* Sock = list[i]->GetSocket();
4381 Sock->WriteLine(":"+std::string(user->nick)+" PRIVMSG "+cname+" :"+text);
4386 else if (target_type == TYPE_SERVER)
4390 char* target = (char*)dest;
4391 std::deque<std::string> par;
4392 par.push_back(target);
4393 par.push_back(":"+text);
4394 DoOneToMany(user->nick,"PRIVMSG",par);
4399 virtual void OnBackgroundTimer(time_t curtime)
4401 AutoConnectServers(curtime);
4402 DoPingChecks(curtime);
4405 virtual void OnUserJoin(userrec* user, chanrec* channel)
4407 // Only do this for local users
4410 std::deque<std::string> params;
4412 params.push_back(channel->name);
4414 if (channel->GetUserCounter() > 1)
4416 // not the first in the channel
4417 DoOneToMany(user->nick,"JOIN",params);
4421 // first in the channel, set up their permissions
4422 // and the channel TS with FJOIN.
4424 snprintf(ts,24,"%lu",(unsigned long)channel->age);
4426 params.push_back(channel->name);
4427 params.push_back(ts);
4428 params.push_back("@,"+std::string(user->nick));
4429 DoOneToMany(ServerInstance->Config->ServerName,"FJOIN",params);
4434 virtual void OnChangeHost(userrec* user, const std::string &newhost)
4436 // only occurs for local clients
4437 if (user->registered != REG_ALL)
4439 std::deque<std::string> params;
4440 params.push_back(newhost);
4441 DoOneToMany(user->nick,"FHOST",params);
4444 virtual void OnChangeName(userrec* user, const std::string &gecos)
4446 // only occurs for local clients
4447 if (user->registered != REG_ALL)
4449 std::deque<std::string> params;
4450 params.push_back(gecos);
4451 DoOneToMany(user->nick,"FNAME",params);
4454 virtual void OnUserPart(userrec* user, chanrec* channel, const std::string &partmessage)
4458 std::deque<std::string> params;
4459 params.push_back(channel->name);
4460 if (partmessage != "")
4461 params.push_back(":"+partmessage);
4462 DoOneToMany(user->nick,"PART",params);
4466 virtual void OnUserConnect(userrec* user)
4468 char agestr[MAXBUF];
4471 std::deque<std::string> params;
4472 snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age);
4473 params.push_back(agestr);
4474 params.push_back(user->nick);
4475 params.push_back(user->host);
4476 params.push_back(user->dhost);
4477 params.push_back(user->ident);
4478 params.push_back("+"+std::string(user->FormatModes()));
4479 params.push_back(user->GetIPString());
4480 params.push_back(":"+std::string(user->fullname));
4481 DoOneToMany(ServerInstance->Config->ServerName,"NICK",params);
4483 // User is Local, change needs to be reflected!
4484 TreeServer* SourceServer = FindServer(user->server);
4487 SourceServer->AddUserCount();
4493 virtual void OnUserQuit(userrec* user, const std::string &reason)
4495 if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
4497 std::deque<std::string> params;
4498 params.push_back(":"+reason);
4499 DoOneToMany(user->nick,"QUIT",params);
4501 // Regardless, We need to modify the user Counts..
4502 TreeServer* SourceServer = FindServer(user->server);
4505 SourceServer->DelUserCount();
4510 virtual void OnUserPostNick(userrec* user, const std::string &oldnick)
4514 std::deque<std::string> params;
4515 params.push_back(user->nick);
4516 DoOneToMany(oldnick,"NICK",params);
4520 virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason)
4522 if ((source) && (IS_LOCAL(source)))
4524 std::deque<std::string> params;
4525 params.push_back(chan->name);
4526 params.push_back(user->nick);
4527 params.push_back(":"+reason);
4528 DoOneToMany(source->nick,"KICK",params);
4532 std::deque<std::string> params;
4533 params.push_back(chan->name);
4534 params.push_back(user->nick);
4535 params.push_back(":"+reason);
4536 DoOneToMany(ServerInstance->Config->ServerName,"KICK",params);
4540 virtual void OnRemoteKill(userrec* source, userrec* dest, const std::string &reason)
4542 std::deque<std::string> params;
4543 params.push_back(dest->nick);
4544 params.push_back(":"+reason);
4545 DoOneToMany(source->nick,"KILL",params);
4548 virtual void OnRehash(const std::string ¶meter)
4550 if (parameter != "")
4552 std::deque<std::string> params;
4553 params.push_back(parameter);
4554 DoOneToMany(ServerInstance->Config->ServerName,"REHASH",params);
4556 if (ServerInstance->MatchText(ServerInstance->Config->ServerName,parameter))
4558 ServerInstance->WriteOpers("*** Remote rehash initiated from server \002%s\002",ServerInstance->Config->ServerName);
4559 ServerInstance->RehashServer();
4562 ReadConfiguration(false);
4565 // note: the protocol does not allow direct umode +o except
4566 // via NICK with 8 params. sending OPERTYPE infers +o modechange
4568 virtual void OnOper(userrec* user, const std::string &opertype)
4572 std::deque<std::string> params;
4573 params.push_back(opertype);
4574 DoOneToMany(user->nick,"OPERTYPE",params);
4578 void OnLine(userrec* source, const std::string &host, bool adding, char linetype, long duration, const std::string &reason)
4580 if (IS_LOCAL(source))
4583 snprintf(type,8,"%cLINE",linetype);
4584 std::string stype = type;
4587 char sduration[MAXBUF];
4588 snprintf(sduration,MAXBUF,"%ld",duration);
4589 std::deque<std::string> params;
4590 params.push_back(host);
4591 params.push_back(sduration);
4592 params.push_back(":"+reason);
4593 DoOneToMany(source->nick,stype,params);
4597 std::deque<std::string> params;
4598 params.push_back(host);
4599 DoOneToMany(source->nick,stype,params);
4604 virtual void OnAddGLine(long duration, userrec* source, const std::string &reason, const std::string &hostmask)
4606 OnLine(source,hostmask,true,'G',duration,reason);
4609 virtual void OnAddZLine(long duration, userrec* source, const std::string &reason, const std::string &ipmask)
4611 OnLine(source,ipmask,true,'Z',duration,reason);
4614 virtual void OnAddQLine(long duration, userrec* source, const std::string &reason, const std::string &nickmask)
4616 OnLine(source,nickmask,true,'Q',duration,reason);
4619 virtual void OnAddELine(long duration, userrec* source, const std::string &reason, const std::string &hostmask)
4621 OnLine(source,hostmask,true,'E',duration,reason);
4624 virtual void OnDelGLine(userrec* source, const std::string &hostmask)
4626 OnLine(source,hostmask,false,'G',0,"");
4629 virtual void OnDelZLine(userrec* source, const std::string &ipmask)
4631 OnLine(source,ipmask,false,'Z',0,"");
4634 virtual void OnDelQLine(userrec* source, const std::string &nickmask)
4636 OnLine(source,nickmask,false,'Q',0,"");
4639 virtual void OnDelELine(userrec* source, const std::string &hostmask)
4641 OnLine(source,hostmask,false,'E',0,"");
4644 virtual void OnMode(userrec* user, void* dest, int target_type, const std::string &text)
4646 if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
4648 if (target_type == TYPE_USER)
4650 userrec* u = (userrec*)dest;
4651 std::deque<std::string> params;
4652 params.push_back(u->nick);
4653 params.push_back(text);
4654 DoOneToMany(user->nick,"MODE",params);
4658 chanrec* c = (chanrec*)dest;
4659 std::deque<std::string> params;
4660 params.push_back(c->name);
4661 params.push_back(text);
4662 DoOneToMany(user->nick,"MODE",params);
4667 virtual void OnSetAway(userrec* user)
4671 std::deque<std::string> params;
4672 params.push_back(":"+std::string(user->awaymsg));
4673 DoOneToMany(user->nick,"AWAY",params);
4677 virtual void OnCancelAway(userrec* user)
4681 std::deque<std::string> params;
4683 DoOneToMany(user->nick,"AWAY",params);
4687 virtual void ProtoSendMode(void* opaque, int target_type, void* target, const std::string &modeline)
4689 TreeSocket* s = (TreeSocket*)opaque;
4692 if (target_type == TYPE_USER)
4694 userrec* u = (userrec*)target;
4695 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" FMODE "+u->nick+" "+ConvToStr(u->age)+" "+modeline);
4699 chanrec* c = (chanrec*)target;
4700 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age)+" "+modeline);
4705 virtual void ProtoSendMetaData(void* opaque, int target_type, void* target, const std::string &extname, const std::string &extdata)
4707 TreeSocket* s = (TreeSocket*)opaque;
4710 if (target_type == TYPE_USER)
4712 userrec* u = (userrec*)target;
4713 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA "+u->nick+" "+extname+" :"+extdata);
4715 else if (target_type == TYPE_OTHER)
4717 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA * "+extname+" :"+extdata);
4719 else if (target_type == TYPE_CHANNEL)
4721 chanrec* c = (chanrec*)target;
4722 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA "+c->name+" "+extname+" :"+extdata);
4727 virtual void OnEvent(Event* event)
4729 if (event->GetEventID() == "send_metadata")
4731 std::deque<std::string>* params = (std::deque<std::string>*)event->GetData();
4732 if (params->size() < 3)
4734 (*params)[2] = ":" + (*params)[2];
4735 DoOneToMany(ServerInstance->Config->ServerName,"METADATA",*params);
4737 else if (event->GetEventID() == "send_mode")
4739 std::deque<std::string>* params = (std::deque<std::string>*)event->GetData();
4740 if (params->size() < 2)
4742 // Insert the TS value of the object, either userrec or chanrec
4744 userrec* a = ServerInstance->FindNick((*params)[0]);
4751 chanrec* a = ServerInstance->FindChan((*params)[0]);
4757 params->insert(params->begin() + 1,ConvToStr(ourTS));
4758 DoOneToMany(ServerInstance->Config->ServerName,"FMODE",*params);
4762 virtual ~ModuleSpanningTree()
4766 virtual Version GetVersion()
4768 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
4771 void Implements(char* List)
4773 List[I_OnPreCommand] = List[I_OnGetServerDescription] = List[I_OnUserInvite] = List[I_OnPostLocalTopicChange] = 1;
4774 List[I_OnWallops] = List[I_OnUserNotice] = List[I_OnUserMessage] = List[I_OnBackgroundTimer] = 1;
4775 List[I_OnUserJoin] = List[I_OnChangeHost] = List[I_OnChangeName] = List[I_OnUserPart] = List[I_OnUserConnect] = 1;
4776 List[I_OnUserQuit] = List[I_OnUserPostNick] = List[I_OnUserKick] = List[I_OnRemoteKill] = List[I_OnRehash] = 1;
4777 List[I_OnOper] = List[I_OnAddGLine] = List[I_OnAddZLine] = List[I_OnAddQLine] = List[I_OnAddELine] = 1;
4778 List[I_OnDelGLine] = List[I_OnDelZLine] = List[I_OnDelQLine] = List[I_OnDelELine] = List[I_ProtoSendMode] = List[I_OnMode] = 1;
4779 List[I_OnStats] = List[I_ProtoSendMetaData] = List[I_OnEvent] = List[I_OnSetAway] = List[I_OnCancelAway] = 1;
4782 /* It is IMPORTANT that m_spanningtree is the last module in the chain
4783 * so that any activity it sees is FINAL, e.g. we arent going to send out
4784 * a NICK message before m_cloaking has finished putting the +x on the user,
4786 * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
4787 * the module call queue.
4789 Priority Prioritize()
4791 return PRIORITY_LAST;
4796 class ModuleSpanningTreeFactory : public ModuleFactory
4799 ModuleSpanningTreeFactory()
4803 ~ModuleSpanningTreeFactory()
4807 virtual Module * CreateModule(InspIRCd* Me)
4809 TreeProtocolModule = new ModuleSpanningTree(Me);
4810 return TreeProtocolModule;
4816 extern "C" void * init_module( void )
4818 return new ModuleSpanningTreeFactory;