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;
503 irc::string FailOver;
506 void DoFailOver(Link* x);
507 Link* FindLink(const std::string& name);
509 /* The usual stuff for inspircd modules,
510 * plus the vector of Link classes which we
511 * use to store the <link> tags from the config
515 std::vector<Link> LinkBlocks;
517 /* Yay for fast searches!
518 * This is hundreds of times faster than recursion
519 * or even scanning a linked list, especially when
520 * there are more than a few servers to deal with.
523 TreeServer* FindServer(std::string ServerName)
525 server_hash::iterator iter;
526 iter = serverlist.find(ServerName.c_str());
527 if (iter != serverlist.end())
537 /* Returns the locally connected server we must route a
538 * message through to reach server 'ServerName'. This
539 * only applies to one-to-one and not one-to-many routing.
540 * See the comments for the constructor of TreeServer
543 TreeServer* BestRouteTo(std::string ServerName)
545 if (ServerName.c_str() == TreeRoot->GetName())
547 TreeServer* Found = FindServer(ServerName);
550 return Found->GetRoute();
558 /* Find the first server matching a given glob mask.
559 * Theres no find-using-glob method of hash_map [awwww :-(]
560 * so instead, we iterate over the list using an iterator
561 * and match each one until we get a hit. Yes its slow,
564 TreeServer* FindServerMask(std::string ServerName)
566 for (server_hash::iterator i = serverlist.begin(); i != serverlist.end(); i++)
568 if (match(i->first.c_str(),ServerName.c_str()))
574 /* A convenient wrapper that returns true if a server exists */
575 bool IsServer(std::string ServerName)
577 return (FindServer(ServerName) != NULL);
581 class cmd_rconnect : public command_t
585 cmd_rconnect (InspIRCd* Instance, Module* Callback) : command_t(Instance, "RCONNECT", 'o', 2), Creator(Callback)
587 this->source = "m_spanningtree.so";
588 syntax = "<remote-server-mask> <servermask>";
591 void Handle (const char** parameters, int pcnt, userrec *user)
593 user->WriteServ("NOTICE %s :*** RCONNECT: Sending remote connect to \002%s\002 to connect server \002%s\002.",user->nick,parameters[0],parameters[1]);
594 /* Is this aimed at our server? */
595 if (ServerInstance->MatchText(ServerInstance->Config->ServerName,parameters[0]))
597 /* Yes, initiate the given connect */
598 ServerInstance->SNO->WriteToSnoMask('l',"Remote CONNECT from %s matching \002%s\002, connecting server \002%s\002",user->nick,parameters[0],parameters[1]);
600 para[0] = parameters[1];
601 Creator->OnPreCommand("CONNECT", para, 1, user, true);
608 /* Every SERVER connection inbound or outbound is represented by
609 * an object of type TreeSocket.
610 * TreeSockets, being inherited from InspSocket, can be tied into
611 * the core socket engine, and we cn therefore receive activity events
612 * for them, just like activex objects on speed. (yes really, that
613 * is a technical term!) Each of these which relates to a locally
614 * connected server is assocated with it, by hooking it onto a
615 * TreeSocket class using its constructor. In this way, we can
616 * maintain a list of servers, some of which are directly connected,
617 * some of which are not.
620 class TreeSocket : public InspSocket
623 std::string in_buffer;
624 ServerState LinkState;
625 std::string InboundServerName;
626 std::string InboundDescription;
628 int num_lost_servers;
630 bool LastPingWasGood;
634 unsigned int keylength;
635 std::string ModuleList;
636 std::map<std::string,std::string> CapKeys;
640 /* Because most of the I/O gubbins are encapsulated within
641 * InspSocket, we just call the superclass constructor for
642 * most of the action, and append a few of our own values
645 TreeSocket(InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime)
646 : InspSocket(SI, host, port, listening, maxtime)
649 this->LinkState = LISTENER;
651 this->ctx_out = NULL;
654 TreeSocket(InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime, std::string ServerName)
655 : InspSocket(SI, host, port, listening, maxtime)
658 this->LinkState = CONNECTING;
660 this->ctx_out = NULL;
663 /* When a listening socket gives us a new file descriptor,
664 * we must associate it with a socket without creating a new
665 * connection. This constructor is used for this purpose.
667 TreeSocket(InspIRCd* SI, int newfd, char* ip)
668 : InspSocket(SI, newfd, ip)
670 this->LinkState = WAIT_AUTH_1;
672 this->ctx_out = NULL;
673 this->SendCapabilities();
684 void InitAES(std::string key,std::string SName)
691 ServerInstance->Log(DEBUG,"Initialized AES key %s",key.c_str());
692 // key must be 16, 24, 32 etc bytes (multiple of 8)
693 keylength = key.length();
694 if (!(keylength == 16 || keylength == 24 || keylength == 32))
696 this->Instance->SNO->WriteToSnoMask('l',"\2ERROR\2: Key length for encryptionkey is not 16, 24 or 32 bytes in length!");
697 ServerInstance->Log(DEBUG,"Key length not 16, 24 or 32 characters!");
701 this->Instance->SNO->WriteToSnoMask('l',"\2AES\2: Initialized %d bit encryption to server %s",keylength*8,SName.c_str());
702 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\
703 \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);
704 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\
705 \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);
709 /* When an outbound connection finishes connecting, we receive
710 * this event, and must send our SERVER string to the other
711 * side. If the other side is happy, as outlined in the server
712 * to server docs on the inspircd.org site, the other side
713 * will then send back its own server string.
715 virtual bool OnConnected()
717 if (this->LinkState == CONNECTING)
719 /* we do not need to change state here. */
720 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
722 if (x->Name == this->myhost)
724 this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] established.");
725 this->SendCapabilities();
726 if (x->EncryptionKey != "")
728 if (!(x->EncryptionKey.length() == 16 || x->EncryptionKey.length() == 24 || x->EncryptionKey.length() == 32))
730 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.");
734 this->WriteLine(std::string("AES ")+this->Instance->Config->ServerName);
735 this->InitAES(x->EncryptionKey,x->Name.c_str());
738 /* found who we're supposed to be connecting to, send the neccessary gubbins. */
739 this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc);
744 /* There is a (remote) chance that between the /CONNECT and the connection
745 * being accepted, some muppet has removed the <link> block and rehashed.
746 * If that happens the connection hangs here until it's closed. Unlikely
747 * and rather harmless.
749 this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2 lost link tag(!)");
753 virtual void OnError(InspSocketError e)
755 /* We don't handle this method, because all our
756 * dirty work is done in OnClose() (see below)
757 * which is still called on error conditions too.
759 if (e == I_ERR_CONNECT)
761 this->Instance->SNO->WriteToSnoMask('l',"Connection failed: Connection to \002"+myhost+"\002 refused");
762 Link* MyLink = FindLink(myhost);
768 virtual int OnDisconnect()
770 /* For the same reason as above, we don't
771 * handle OnDisconnect()
776 /* Recursively send the server tree with distances as hops.
777 * This is used during network burst to inform the other server
778 * (and any of ITS servers too) of what servers we know about.
779 * If at any point any of these servers already exist on the other
780 * end, our connection may be terminated. The hopcounts given
781 * by this function are relative, this doesn't matter so long as
782 * they are all >1, as all the remote servers re-calculate them
783 * to be relative too, with themselves as hop 0.
785 void SendServers(TreeServer* Current, TreeServer* s, int hops)
788 for (unsigned int q = 0; q < Current->ChildCount(); q++)
790 TreeServer* recursive_server = Current->GetChild(q);
791 if (recursive_server != s)
793 snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str());
794 this->WriteLine(command);
795 this->WriteLine(":"+recursive_server->GetName()+" VERSION :"+recursive_server->GetVersion());
796 /* down to next level */
797 this->SendServers(recursive_server, s, hops+1);
802 std::string MyCapabilities()
804 std::vector<std::string> modlist;
805 std::string capabilities = "";
807 for (int i = 0; i <= this->Instance->GetModuleCount(); i++)
809 if (this->Instance->modules[i]->GetVersion().Flags & VF_COMMON)
810 modlist.push_back(this->Instance->Config->module_names[i]);
812 sort(modlist.begin(),modlist.end());
813 for (unsigned int i = 0; i < modlist.size(); i++)
816 capabilities = capabilities + ",";
817 capabilities = capabilities + modlist[i];
822 void SendCapabilities()
824 irc::commasepstream modulelist(MyCapabilities());
826 this->WriteLine("CAPAB START");
828 /* Send module names, split at 509 length */
829 std::string item = "*";
830 std::string line = "CAPAB MODULES ";
831 while ((item = modulelist.GetToken()) != "")
833 if (line.length() + item.length() + 1 > 509)
835 this->WriteLine(line);
836 line = "CAPAB MODULES ";
839 if (line != "CAPAB MODULES ")
844 if (line != "CAPAB MODULES ")
845 this->WriteLine(line);
852 #ifdef SUPPORT_IP6LINKS
855 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));
857 this->WriteLine("CAPAB END");
860 /* Check a comma seperated list for an item */
861 bool HasItem(const std::string &list, const std::string &item)
863 irc::commasepstream seplist(list);
865 std::string item2 = "*";
866 while ((item2 = seplist.GetToken()) != "")
875 /* Isolate and return the elements that are different between two comma seperated lists */
876 std::string ListDifference(const std::string &one, const std::string &two)
878 irc::commasepstream list_one(one);
879 std::string item = "*";
880 std::string result = "";
881 while ((item = list_one.GetToken()) != "")
883 if (!HasItem(two, item))
892 bool Capab(std::deque<std::string> params)
894 if (params.size() < 1)
896 this->WriteLine("ERROR :Invalid number of parameters for CAPAB - Mismatched version");
900 if (params[0] == "START")
902 this->ModuleList = "";
903 this->CapKeys.clear();
905 else if (params[0] == "END")
907 std::string reason = "";
909 #ifdef SUPPORT_IP6LINKS
912 /* Compare ModuleList and check CapKeys...
913 * Maybe this could be tidier? -- Brain
915 if ((this->ModuleList != this->MyCapabilities()) && (this->ModuleList.length()))
917 std::string diff = ListDifference(this->ModuleList, this->MyCapabilities());
920 diff = "your server:" + ListDifference(this->MyCapabilities(), this->ModuleList);
924 diff = "this server:" + diff;
926 if (diff.length() == 12)
927 reason = "Module list in CAPAB is not alphabetically ordered, cannot compare lists.";
929 reason = "Modules loaded on these servers are not correctly matched, these modules are not loaded on " + diff;
932 if (((this->CapKeys.find("IP6SUPPORT") == this->CapKeys.end()) && (ip6support)) || ((this->CapKeys.find("IP6SUPPORT") != this->CapKeys.end()) && (this->CapKeys.find("IP6SUPPORT")->second != ConvToStr(ip6support))))
933 reason = "We don't both support linking to IPV6 servers";
935 if (((this->CapKeys.find("IP6NATIVE") != this->CapKeys.end()) && (this->CapKeys.find("IP6NATIVE")->second == "1")) && (!ip6support))
936 reason = "The remote server is IPV6 native, and we don't support linking to IPV6 servers";
938 if (((this->CapKeys.find("NICKMAX") == this->CapKeys.end()) || ((this->CapKeys.find("NICKMAX") != this->CapKeys.end()) && (this->CapKeys.find("NICKMAX")->second != ConvToStr(NICKMAX)))))
939 reason = "Maximum nickname lengths differ or remote nickname length not specified";
941 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))))
942 reason = "We don't both have halfop support enabled/disabled identically";
944 if (((this->CapKeys.find("IDENTMAX") == this->CapKeys.end()) || ((this->CapKeys.find("IDENTMAX") != this->CapKeys.end()) && (this->CapKeys.find("IDENTMAX")->second != ConvToStr(IDENTMAX)))))
945 reason = "Maximum ident lengths differ or remote ident length not specified";
947 if (((this->CapKeys.find("CHANMAX") == this->CapKeys.end()) || ((this->CapKeys.find("CHANMAX") != this->CapKeys.end()) && (this->CapKeys.find("CHANMAX")->second != ConvToStr(CHANMAX)))))
948 reason = "Maximum channel lengths differ or remote channel length not specified";
950 if (((this->CapKeys.find("MAXMODES") == this->CapKeys.end()) || ((this->CapKeys.find("MAXMODES") != this->CapKeys.end()) && (this->CapKeys.find("MAXMODES")->second != ConvToStr(MAXMODES)))))
951 reason = "Maximum modes per line differ or remote modes per line not specified";
953 if (((this->CapKeys.find("MAXQUIT") == this->CapKeys.end()) || ((this->CapKeys.find("MAXQUIT") != this->CapKeys.end()) && (this->CapKeys.find("MAXQUIT")->second != ConvToStr(MAXQUIT)))))
954 reason = "Maximum quit lengths differ or remote quit length not specified";
956 if (((this->CapKeys.find("MAXTOPIC") == this->CapKeys.end()) || ((this->CapKeys.find("MAXTOPIC") != this->CapKeys.end()) && (this->CapKeys.find("MAXTOPIC")->second != ConvToStr(MAXTOPIC)))))
957 reason = "Maximum topic lengths differ or remote topic length not specified";
959 if (((this->CapKeys.find("MAXKICK") == this->CapKeys.end()) || ((this->CapKeys.find("MAXKICK") != this->CapKeys.end()) && (this->CapKeys.find("MAXKICK")->second != ConvToStr(MAXKICK)))))
960 reason = "Maximum kick lengths differ or remote kick length not specified";
962 if (((this->CapKeys.find("MAXGECOS") == this->CapKeys.end()) || ((this->CapKeys.find("MAXGECOS") != this->CapKeys.end()) && (this->CapKeys.find("MAXGECOS")->second != ConvToStr(MAXGECOS)))))
963 reason = "Maximum GECOS (fullname) lengths differ or remote GECOS length not specified";
965 if (((this->CapKeys.find("MAXAWAY") == this->CapKeys.end()) || ((this->CapKeys.find("MAXAWAY") != this->CapKeys.end()) && (this->CapKeys.find("MAXAWAY")->second != ConvToStr(MAXAWAY)))))
966 reason = "Maximum awaymessage lengths differ or remote awaymessage length not specified";
970 this->WriteLine("ERROR :CAPAB negotiation failed: "+reason);
974 else if ((params[0] == "MODULES") && (params.size() == 2))
976 if (!this->ModuleList.length())
978 this->ModuleList.append(params[1]);
982 this->ModuleList.append(",");
983 this->ModuleList.append(params[1]);
986 else if ((params[0] == "CAPABILITIES") && (params.size() == 2))
988 irc::tokenstream capabs(params[1]);
989 std::string item = "*";
990 while ((item = capabs.GetToken()) != "")
992 /* Process each key/value pair */
993 std::string::size_type equals = item.rfind('=');
994 if (equals != std::string::npos)
996 std::string var = item.substr(0, equals);
997 std::string value = item.substr(equals+1, item.length());
998 this->Instance->Log(DEBUG,"Key='%s' Value='%s'",var.c_str(),value.c_str());
999 CapKeys[var] = value;
1007 /* This function forces this server to quit, removing this server
1008 * and any users on it (and servers and users below that, etc etc).
1009 * It's very slow and pretty clunky, but luckily unless your network
1010 * is having a REAL bad hair day, this function shouldnt be called
1011 * too many times a month ;-)
1013 void SquitServer(std::string &from, TreeServer* Current)
1015 /* recursively squit the servers attached to 'Current'.
1016 * We're going backwards so we don't remove users
1017 * while we still need them ;)
1019 for (unsigned int q = 0; q < Current->ChildCount(); q++)
1021 TreeServer* recursive_server = Current->GetChild(q);
1022 this->SquitServer(from,recursive_server);
1024 /* Now we've whacked the kids, whack self */
1026 num_lost_users += Current->QuitUsers(from);
1029 /* This is a wrapper function for SquitServer above, which
1030 * does some validation first and passes on the SQUIT to all
1031 * other remaining servers.
1033 void Squit(TreeServer* Current,std::string reason)
1035 if ((Current) && (Current != TreeRoot))
1037 std::deque<std::string> params;
1038 params.push_back(Current->GetName());
1039 params.push_back(":"+reason);
1040 DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
1041 if (Current->GetParent() == TreeRoot)
1043 this->Instance->WriteOpers("Server \002"+Current->GetName()+"\002 split: "+reason);
1047 this->Instance->WriteOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
1049 num_lost_servers = 0;
1051 std::string from = Current->GetParent()->GetName()+" "+Current->GetName();
1052 SquitServer(from, Current);
1054 Current->GetParent()->DelChild(Current);
1056 this->Instance->WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
1060 ServerInstance->Log(DEFAULT,"Squit from unknown server");
1064 /* FMODE command - server mode with timestamp checks */
1065 bool ForceMode(std::string source, std::deque<std::string> ¶ms)
1067 /* Chances are this is a 1.0 FMODE without TS */
1068 if (params.size() < 3)
1070 this->WriteLine("ERROR :Version 1.0 FMODE sent to version 1.1 server");
1075 std::string sourceserv;
1077 /* Are we dealing with an FMODE from a user, or from a server? */
1078 userrec* who = this->Instance->FindNick(source);
1081 /* FMODE from a user, set sourceserv to the users server name */
1082 sourceserv = who->server;
1086 /* FMODE from a server, create a fake user to receive mode feedback */
1087 who = new userrec(this->Instance);
1088 who->SetFd(FD_MAGIC_NUMBER);
1089 smode = true; /* Setting this flag tells us we should free the userrec later */
1090 sourceserv = source; /* Set sourceserv to the actual source string */
1092 const char* modelist[64];
1095 memset(&modelist,0,sizeof(modelist));
1096 for (unsigned int q = 0; (q < params.size()) && (q < 64); q++)
1100 /* The timestamp is in this position.
1101 * We don't want to pass that up to the
1102 * server->client protocol!
1104 TS = atoi(params[q].c_str());
1108 /* Everything else is fine to append to the modelist */
1109 modelist[n++] = params[q].c_str();
1113 /* Extract the TS value of the object, either userrec or chanrec */
1114 userrec* dst = this->Instance->FindNick(params[0]);
1115 chanrec* chan = NULL;
1123 chan = this->Instance->FindChan(params[0]);
1130 /* TS is equal: Merge the mode changes, use voooodoooooo on modes
1135 ServerInstance->Log(DEBUG,"Entering TS equality check");
1136 ModeHandler* mh = NULL;
1137 unsigned long paramptr = 3;
1138 std::string to_bounce = "";
1139 std::string to_keep = "";
1140 std::vector<std::string> params_to_keep;
1141 std::string params_to_bounce = "";
1143 char cur_change = 1;
1144 char old_change = 0;
1145 char old_bounce_change = 0;
1146 /* Merge modes, basically do special stuff to mode with params */
1147 for (std::string::iterator x = params[2].begin(); x != params[2].end(); x++)
1160 /* We only care about whats being set,
1161 * not whats being unset
1163 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1165 if ((mh) && (mh->GetNumParams(adding) > 0) && (!mh->IsListMode()))
1167 /* We only want to do special things to
1168 * modes with parameters, we are going to rewrite
1172 adding ? cur_change = '+' : cur_change = '-';
1174 ret = mh->ModeSet(smode ? NULL : who, dst, chan, params[paramptr]);
1176 /* The mode is set here, check which we should keep */
1179 bool which_to_keep = mh->CheckTimeStamp(TS, ourTS, params[paramptr], ret.second, chan);
1181 if (which_to_keep == true)
1183 /* Keep ours, bounce theirs:
1184 * Send back ours to them and
1185 * drop their mode changs
1187 adding ? cur_change = '+' : cur_change = '-';
1188 if (cur_change != old_bounce_change)
1189 to_bounce += cur_change;
1191 old_bounce_change = cur_change;
1193 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1194 params_to_bounce.append(" ").append(ret.second);
1198 /* Keep theirs: Accept their mode change,
1201 adding ? cur_change = '+' : cur_change = '-';
1202 if (cur_change != old_change)
1203 to_keep += cur_change;
1205 old_change = cur_change;
1207 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1208 params_to_keep.push_back(params[paramptr]);
1213 /* Mode isnt set here, we want it */
1214 adding ? cur_change = '+' : cur_change = '-';
1215 if (cur_change != old_change)
1216 to_keep += cur_change;
1218 old_change = cur_change;
1220 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1221 params_to_keep.push_back(params[paramptr]);
1228 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1232 adding ? cur_change = '+' : cur_change = '-';
1234 /* Just keep this, safe to merge with no checks
1235 * it has no parameters
1238 if (cur_change != old_change)
1239 to_keep += cur_change;
1241 old_change = cur_change;
1243 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1245 ServerInstance->Log(DEBUG,"Mode removal %d %d",adding, mh->GetNumParams(adding));
1246 params_to_keep.push_back(params[paramptr++]);
1253 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1257 /* Taking a mode away */
1258 adding ? cur_change = '+' : cur_change = '-';
1260 if (cur_change != old_change)
1261 to_keep += cur_change;
1263 old_change = cur_change;
1265 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1266 params_to_keep.push_back(params[paramptr++]);
1273 if (to_bounce.length())
1275 std::deque<std::string> newparams;
1276 newparams.push_back(params[0]);
1277 newparams.push_back(ConvToStr(ourTS));
1278 newparams.push_back(to_bounce+params_to_bounce);
1279 DoOneToOne(this->Instance->Config->ServerName,"FMODE",newparams,sourceserv);
1282 if (to_keep.length())
1286 modelist[0] = params[0].c_str();
1287 modelist[1] = to_keep.c_str();
1289 if (params_to_keep.size() > 2)
1291 for (q = 2; (q < params_to_keep.size()) && (q < 64); q++)
1293 ServerInstance->Log(DEBUG,"Item %d of %d", q, params_to_keep.size());
1294 modelist[n++] = params_to_keep[q].c_str();
1300 ServerInstance->Log(DEBUG,"Send mode");
1301 this->Instance->SendMode(modelist, n+2, who);
1305 ServerInstance->Log(DEBUG,"Send mode client");
1306 this->Instance->CallCommandHandler("MODE", modelist, n+2, who);
1309 /* HOT POTATO! PASS IT ON! */
1310 DoOneToAllButSender(source,"FMODE",params,sourceserv);
1314 /* U-lined servers always win regardless of their TS */
1315 if ((TS > ourTS) && (!this->Instance->ULine(source.c_str())))
1317 /* Bounce the mode back to its sender.* We use our lower TS, so the other end
1318 * SHOULD accept it, if its clock is right.
1320 * NOTE: We should check that we arent bouncing anything thats already set at this end.
1321 * If we are, bounce +ourmode to 'reinforce' it. This prevents desyncs.
1322 * e.g. They send +l 50, we have +l 10 set. rather than bounce -l 50, we bounce +l 10.
1324 * Thanks to jilles for pointing out this one-hell-of-an-issue before i even finished
1325 * writing the code. It took me a while to come up with this solution.
1327 * XXX: BE SURE YOU UNDERSTAND THIS CODE FULLY BEFORE YOU MESS WITH IT.
1330 std::deque<std::string> newparams; /* New parameter list we send back */
1331 newparams.push_back(params[0]); /* Target, user or channel */
1332 newparams.push_back(ConvToStr(ourTS)); /* Timestamp value of the target */
1333 newparams.push_back(""); /* This contains the mode string. For now
1334 * it's empty, we fill it below.
1337 /* Intelligent mode bouncing. Don't just invert, reinforce any modes which are already
1338 * set to avoid a desync here.
1340 std::string modebounce = "";
1343 ModeHandler* mh = NULL;
1344 char cur_change = 1;
1345 char old_change = 0;
1346 for (std::string::iterator x = params[2].begin(); x != params[2].end(); x++)
1348 /* Iterate over all mode chars in the sent set */
1351 /* Adding or subtracting modes? */
1359 /* Find the mode handler for this mode */
1360 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1362 /* Got a mode handler?
1363 * This also prevents us bouncing modes we have no handler for.
1370 /* Does the mode require a parameter right now?
1371 * If it does, fetch it if we can
1373 if ((mh->GetNumParams(adding) > 0) && (t < params.size()))
1376 /* Call the ModeSet method to determine if its set with the
1377 * given parameter here or not.
1379 ret = mh->ModeSet(smode ? NULL : who, dst, chan, p);
1381 /* XXX: Really. Dont ask.
1382 * Determine from if its set combined with what the current
1383 * 'state' is (adding or not) as to wether we should 'invert'
1384 * or 'reinforce' the mode change
1386 (!ret.first ? (adding ? cur_change = '-' : cur_change = '+') : (!adding ? cur_change = '-' : cur_change = '+'));
1388 /* Quickly determine if we have 'flipped' from + to -,
1389 * or - to +, to prevent unneccessary +/- chars in the
1390 * output string that waste bandwidth
1392 if (cur_change != old_change)
1393 modebounce += cur_change;
1394 old_change = cur_change;
1396 /* Add the mode character to the output string */
1397 modebounce += mh->GetModeChar();
1399 /* We got a parameter back from ModeHandler::ModeSet,
1400 * are we supposed to be sending one out right now?
1402 if (ret.second.length())
1404 if (mh->GetNumParams(cur_change == '+') > 0)
1405 /* Yes we're supposed to be sending out
1406 * the parameter. Make sure it goes
1408 newparams.push_back(ret.second);
1416 /* Update the parameters for FMODE with the new 'bounced' string */
1417 newparams[2] = modebounce;
1418 /* Only send it back the way it came, no need to send it anywhere else */
1419 DoOneToOne(this->Instance->Config->ServerName,"FMODE",newparams,sourceserv);
1420 ServerInstance->Log(DEBUG,"FMODE bounced intelligently, our TS less than theirs and the other server is NOT a uline.");
1424 ServerInstance->Log(DEBUG,"Allow modes, TS lower for sender");
1425 /* The server was ulined, but something iffy is up with the TS.
1426 * Sound the alarm bells!
1428 if ((this->Instance->ULine(sourceserv.c_str())) && (TS > ourTS))
1430 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());
1432 /* Allow the mode, route it to either server or user command handling */
1434 this->Instance->SendMode(modelist,n,who);
1436 this->Instance->CallCommandHandler("MODE", modelist, n, who);
1438 /* HOT POTATO! PASS IT ON! */
1439 DoOneToAllButSender(source,"FMODE",params,sourceserv);
1441 /* Are we supposed to free the userrec? */
1448 /* FTOPIC command */
1449 bool ForceTopic(std::string source, std::deque<std::string> ¶ms)
1451 if (params.size() != 4)
1453 time_t ts = atoi(params[1].c_str());
1454 std::string nsource = source;
1456 chanrec* c = this->Instance->FindChan(params[0]);
1459 if ((ts >= c->topicset) || (!*c->topic))
1461 std::string oldtopic = c->topic;
1462 strlcpy(c->topic,params[3].c_str(),MAXTOPIC);
1463 strlcpy(c->setby,params[2].c_str(),NICKMAX-1);
1465 /* if the topic text is the same as the current topic,
1466 * dont bother to send the TOPIC command out, just silently
1467 * update the set time and set nick.
1469 if (oldtopic != params[3])
1471 userrec* user = this->Instance->FindNick(source);
1474 c->WriteChannelWithServ(source.c_str(), "TOPIC %s :%s", c->name, c->topic);
1478 c->WriteChannel(user, "TOPIC %s :%s", c->name, c->topic);
1479 nsource = user->server;
1481 /* all done, send it on its way */
1482 params[3] = ":" + params[3];
1483 DoOneToAllButSender(source,"FTOPIC",params,nsource);
1492 /* FJOIN, similar to unreal SJOIN */
1493 bool ForceJoin(std::string source, std::deque<std::string> ¶ms)
1495 if (params.size() < 3)
1499 char modestring[MAXBUF];
1500 char* mode_users[127];
1501 memset(&mode_users,0,sizeof(mode_users));
1502 mode_users[0] = first;
1503 mode_users[1] = modestring;
1504 strcpy(modestring,"+");
1505 unsigned int modectr = 2;
1507 userrec* who = NULL;
1508 std::string channel = params[0];
1509 time_t TS = atoi(params[1].c_str());
1512 chanrec* chan = this->Instance->FindChan(channel);
1517 strlcpy(mode_users[0],channel.c_str(),MAXBUF);
1519 /* default is a high value, which if we dont have this
1520 * channel will let the other side apply their modes.
1522 time_t ourTS = time(NULL)+600;
1523 chanrec* us = this->Instance->FindChan(channel);
1529 ServerInstance->Log(DEBUG,"FJOIN detected, our TS=%lu, their TS=%lu",ourTS,TS);
1531 irc::tokenstream users(params[2]);
1532 std::string item = "*";
1534 /* do this first, so our mode reversals are correctly received by other servers
1535 * if there is a TS collision.
1537 params[2] = ":" + params[2];
1538 DoOneToAllButSender(source,"FJOIN",params,source);
1541 item = users.GetToken();
1542 /* process one user at a time, applying modes. */
1543 char* usr = (char*)item.c_str();
1544 /* Safety check just to make sure someones not sent us an FJOIN full of spaces
1545 * (is this even possible?) */
1548 char* permissions = usr;
1550 while ((*permissions) && (*permissions != ','))
1552 ModeHandler* mh = ServerInstance->Modes->FindPrefix(*permissions);
1556 charlcat(modestring,mh->GetModeChar(),MAXBUF);
1560 this->Instance->WriteOpers("ERROR: We received a user with an unknown prefix '%c'. Closed connection to avoid a desync.",mh->GetPrefix());
1561 this->WriteLine(std::string("ERROR :Invalid prefix '")+mh->GetModeChar()+"' in FJOIN");
1569 /* Did they get any modes? How many times? */
1570 for (int k = 0; k < ntimes; k++)
1571 mode_users[modectr++] = strdup(usr); // XXX
1573 who = this->Instance->FindNick(usr);
1576 chanrec::JoinUser(this->Instance, who, channel.c_str(), true, key);
1577 if (modectr >= (MAXMODES-1))
1579 /* theres a mode for this user. push them onto the mode queue, and flush it
1580 * if there are more than MAXMODES to go.
1582 if ((ourTS >= TS) || (this->Instance->ULine(who->server)))
1584 /* We also always let u-lined clients win, no matter what the TS value */
1585 ServerInstance->Log(DEBUG,"Our our channel newer than theirs, accepting their modes");
1586 this->Instance->SendMode((const char**)mode_users,modectr,who);
1589 ServerInstance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",us->name,ourTS,TS);
1596 ServerInstance->Log(DEBUG,"Their channel newer than ours, bouncing their modes");
1597 /* bouncy bouncy! */
1598 std::deque<std::string> params;
1599 /* modes are now being UNSET... */
1600 *mode_users[1] = '-';
1601 for (unsigned int x = 0; x < modectr; x++)
1605 params.push_back(ConvToStr(us->age));
1607 params.push_back(mode_users[x]);
1610 // tell everyone to bounce the modes. bad modes, bad!
1611 DoOneToMany(this->Instance->Config->ServerName,"FMODE",params);
1613 strcpy(mode_users[1],"+");
1614 for (unsigned int f = 2; f < modectr; f++)
1615 free(mode_users[f]);
1621 for (unsigned int f = 2; f < modectr; f++)
1622 free(mode_users[f]);
1624 this->WriteLine("ERROR :Invalid user '"+std::string(usr)+"' in FJOIN to '"+channel+"'");
1629 /* there werent enough modes built up to flush it during FJOIN,
1630 * or, there are a number left over. flush them out.
1632 if ((modectr > 2) && (who) && (us))
1636 ServerInstance->Log(DEBUG,"Our our channel newer than theirs, accepting their modes");
1637 this->Instance->SendMode((const char**)mode_users,modectr,who);
1640 ServerInstance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",us->name,ourTS,TS);
1647 ServerInstance->Log(DEBUG,"Their channel newer than ours, bouncing their modes");
1648 std::deque<std::string> params;
1649 *mode_users[1] = '-';
1650 for (unsigned int x = 0; x < modectr; x++)
1654 params.push_back(ConvToStr(us->age));
1656 params.push_back(mode_users[x]);
1658 DoOneToMany(this->Instance->Config->ServerName,"FMODE",params);
1661 for (unsigned int f = 2; f < modectr; f++)
1662 free(mode_users[f]);
1667 bool SyncChannelTS(std::string source, std::deque<std::string> ¶ms)
1669 if (params.size() >= 2)
1671 chanrec* c = this->Instance->FindChan(params[0]);
1674 time_t theirTS = atoi(params[1].c_str());
1675 time_t ourTS = c->age;
1676 if (ourTS >= theirTS)
1678 ServerInstance->Log(DEBUG,"Updating timestamp for %s, our timestamp was %lu and theirs is %lu",c->name,ourTS,theirTS);
1683 DoOneToAllButSender(this->Instance->Config->ServerName,"SYNCTS",params,source);
1688 bool IntroduceClient(std::string source, std::deque<std::string> ¶ms)
1690 if (params.size() < 8)
1692 if (params.size() > 8)
1694 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+params[1]+" :Invalid client introduction ("+params[1]+"?)");
1697 // NICK age nick host dhost ident +modes ip :gecos
1699 time_t age = atoi(params[0].c_str());
1701 /* This used to have a pretty craq'y loop doing the same thing,
1702 * now we just let the STL do the hard work (more efficiently)
1704 std::string::size_type pos_after_plus = params[5].find_first_not_of('+');
1705 if (pos_after_plus != std::string::npos)
1706 params[5] = params[5].substr(pos_after_plus);
1708 const char* tempnick = params[1].c_str();
1709 ServerInstance->Log(DEBUG,"Introduce client %s!%s@%s",tempnick,params[4].c_str(),params[2].c_str());
1711 user_hash::iterator iter = this->Instance->clientlist.find(tempnick);
1713 if (iter != this->Instance->clientlist.end())
1716 ServerInstance->Log(DEBUG,"Nick collision on %s!%s@%s: %lu %lu",tempnick,params[4].c_str(),params[2].c_str(),(unsigned long)age,(unsigned long)iter->second->age);
1717 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+tempnick+" :Nickname collision");
1721 userrec* _new = new userrec(this->Instance);
1722 this->Instance->clientlist[tempnick] = _new;
1723 _new->SetFd(FD_MAGIC_NUMBER);
1724 strlcpy(_new->nick, tempnick,NICKMAX-1);
1725 strlcpy(_new->host, params[2].c_str(),63);
1726 strlcpy(_new->dhost, params[3].c_str(),63);
1727 _new->server = this->Instance->FindServerNamePtr(source.c_str());
1728 strlcpy(_new->ident, params[4].c_str(),IDENTMAX);
1729 strlcpy(_new->fullname, params[7].c_str(),MAXGECOS);
1730 _new->registered = REG_ALL;
1733 for (std::string::iterator v = params[5].begin(); v != params[5].end(); v++)
1734 _new->modes[(*v)-65] = 1;
1736 #ifdef SUPPORT_IP6LINKS
1737 if (params[6].find_first_of(":") != std::string::npos)
1738 _new->SetSockAddr(AF_INET6, params[6].c_str(), 0);
1741 _new->SetSockAddr(AF_INET, params[6].c_str(), 0);
1743 this->Instance->SNO->WriteToSnoMask('C',"Client connecting at %s: %s!%s@%s [%s]",_new->server,_new->nick,_new->ident,_new->host, _new->GetIPString());
1745 params[7] = ":" + params[7];
1746 DoOneToAllButSender(source,"NICK",params,source);
1748 // Increment the Source Servers User Count..
1749 TreeServer* SourceServer = FindServer(source);
1752 ServerInstance->Log(DEBUG,"Found source server of %s",_new->nick);
1753 SourceServer->AddUserCount();
1759 /* Send one or more FJOINs for a channel of users.
1760 * If the length of a single line is more than 480-NICKMAX
1761 * in length, it is split over multiple lines.
1763 void SendFJoins(TreeServer* Current, chanrec* c)
1765 ServerInstance->Log(DEBUG,"Sending FJOINs to other server for %s",c->name);
1767 std::string individual_halfops = std::string(":")+this->Instance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age);
1769 size_t dlen, curlen;
1770 dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,c->name,(unsigned long)c->age);
1772 char* ptr = list + dlen;
1774 CUList *ulist = c->GetUsers();
1775 std::vector<userrec*> specific_halfop;
1776 std::vector<userrec*> specific_voice;
1777 std::string modes = "";
1778 std::string params = "";
1780 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1782 // The first parameter gets a : before it
1783 size_t ptrlen = snprintf(ptr, MAXBUF, " %s%s,%s", !numusers ? ":" : "", c->GetAllPrefixChars(i->second), i->second->nick);
1790 if (curlen > (480-NICKMAX))
1792 this->WriteLine(list);
1793 dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,c->name,(unsigned long)c->age);
1801 this->WriteLine(list);
1803 for (BanList::iterator b = c->bans.begin(); b != c->bans.end(); b++)
1806 params.append(b->data).append(" ");
1808 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age)+" +"+c->ChanModes(true)+modes+" "+params);
1811 /* Send G, Q, Z and E lines */
1812 void SendXLines(TreeServer* Current)
1815 std::string n = this->Instance->Config->ServerName;
1816 const char* sn = n.c_str();
1818 /* Yes, these arent too nice looking, but they get the job done */
1819 for (std::vector<ZLine>::iterator i = Instance->XLines->zlines.begin(); i != Instance->XLines->zlines.end(); i++, iterations++)
1821 snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s",sn,i->ipaddr,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1822 this->WriteLine(data);
1824 for (std::vector<QLine>::iterator i = Instance->XLines->qlines.begin(); i != Instance->XLines->qlines.end(); i++, iterations++)
1826 snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s",sn,i->nick,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1827 this->WriteLine(data);
1829 for (std::vector<GLine>::iterator i = Instance->XLines->glines.begin(); i != Instance->XLines->glines.end(); i++, iterations++)
1831 snprintf(data,MAXBUF,":%s ADDLINE G %s %s %lu %lu :%s",sn,i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1832 this->WriteLine(data);
1834 for (std::vector<ELine>::iterator i = Instance->XLines->elines.begin(); i != Instance->XLines->elines.end(); i++, iterations++)
1836 snprintf(data,MAXBUF,":%s ADDLINE E %s %s %lu %lu :%s",sn,i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1837 this->WriteLine(data);
1839 for (std::vector<ZLine>::iterator i = Instance->XLines->pzlines.begin(); i != Instance->XLines->pzlines.end(); i++, iterations++)
1841 snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s",sn,i->ipaddr,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1842 this->WriteLine(data);
1844 for (std::vector<QLine>::iterator i = Instance->XLines->pqlines.begin(); i != Instance->XLines->pqlines.end(); i++, iterations++)
1846 snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s",sn,i->nick,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1847 this->WriteLine(data);
1849 for (std::vector<GLine>::iterator i = Instance->XLines->pglines.begin(); i != Instance->XLines->pglines.end(); i++, iterations++)
1851 snprintf(data,MAXBUF,":%s ADDLINE G %s %s %lu %lu :%s",sn,i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1852 this->WriteLine(data);
1854 for (std::vector<ELine>::iterator i = Instance->XLines->pelines.begin(); i != Instance->XLines->pelines.end(); i++, iterations++)
1856 snprintf(data,MAXBUF,":%s ADDLINE E %s %s %lu %lu :%s",sn,i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1857 this->WriteLine(data);
1861 /* Send channel modes and topics */
1862 void SendChannelModes(TreeServer* Current)
1865 std::deque<std::string> list;
1867 std::string n = this->Instance->Config->ServerName;
1868 const char* sn = n.c_str();
1869 for (chan_hash::iterator c = this->Instance->chanlist.begin(); c != this->Instance->chanlist.end(); c++, iterations++)
1871 SendFJoins(Current, c->second);
1872 if (*c->second->topic)
1874 snprintf(data,MAXBUF,":%s FTOPIC %s %lu %s :%s",sn,c->second->name,(unsigned long)c->second->topicset,c->second->setby,c->second->topic);
1875 this->WriteLine(data);
1877 FOREACH_MOD_I(this->Instance,I_OnSyncChannel,OnSyncChannel(c->second,(Module*)TreeProtocolModule,(void*)this));
1879 c->second->GetExtList(list);
1880 for (unsigned int j = 0; j < list.size(); j++)
1882 FOREACH_MOD_I(this->Instance,I_OnSyncChannelMetaData,OnSyncChannelMetaData(c->second,(Module*)TreeProtocolModule,(void*)this,list[j]));
1887 /* send all users and their oper state/modes */
1888 void SendUsers(TreeServer* Current)
1891 std::deque<std::string> list;
1893 for (user_hash::iterator u = this->Instance->clientlist.begin(); u != this->Instance->clientlist.end(); u++, iterations++)
1895 if (u->second->registered == REG_ALL)
1897 snprintf(data,MAXBUF,":%s NICK %lu %s %s %s %s +%s %s :%s",u->second->server,(unsigned long)u->second->age,u->second->nick,u->second->host,u->second->dhost,u->second->ident,u->second->FormatModes(),u->second->GetIPString(),u->second->fullname);
1898 this->WriteLine(data);
1899 if (*u->second->oper)
1901 this->WriteLine(":"+std::string(u->second->nick)+" OPERTYPE "+std::string(u->second->oper));
1903 if (*u->second->awaymsg)
1905 this->WriteLine(":"+std::string(u->second->nick)+" AWAY :"+std::string(u->second->awaymsg));
1907 FOREACH_MOD_I(this->Instance,I_OnSyncUser,OnSyncUser(u->second,(Module*)TreeProtocolModule,(void*)this));
1909 u->second->GetExtList(list);
1910 for (unsigned int j = 0; j < list.size(); j++)
1912 FOREACH_MOD_I(this->Instance,I_OnSyncUserMetaData,OnSyncUserMetaData(u->second,(Module*)TreeProtocolModule,(void*)this,list[j]));
1918 /* This function is called when we want to send a netburst to a local
1919 * server. There is a set order we must do this, because for example
1920 * users require their servers to exist, and channels require their
1921 * users to exist. You get the idea.
1923 void DoBurst(TreeServer* s)
1925 std::string burst = "BURST "+ConvToStr(time(NULL));
1926 std::string endburst = "ENDBURST";
1927 // Because by the end of the netburst, it could be gone!
1928 std::string name = s->GetName();
1929 this->Instance->SNO->WriteToSnoMask('l',"Bursting to \2"+name+"\2.");
1930 this->WriteLine(burst);
1931 /* send our version string */
1932 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" VERSION :"+this->Instance->GetVersionString());
1933 /* Send server tree */
1934 this->SendServers(TreeRoot,s,1);
1935 /* Send users and their oper status */
1937 /* Send everything else (channel modes, xlines etc) */
1938 this->SendChannelModes(s);
1939 this->SendXLines(s);
1940 FOREACH_MOD_I(this->Instance,I_OnSyncOtherMetaData,OnSyncOtherMetaData((Module*)TreeProtocolModule,(void*)this));
1941 this->WriteLine(endburst);
1942 this->Instance->SNO->WriteToSnoMask('l',"Finished bursting to \2"+name+"\2.");
1945 /* This function is called when we receive data from a remote
1946 * server. We buffer the data in a std::string (it doesnt stay
1947 * there for long), reading using InspSocket::Read() which can
1948 * read up to 16 kilobytes in one operation.
1950 * IF THIS FUNCTION RETURNS FALSE, THE CORE CLOSES AND DELETES
1951 * THE SOCKET OBJECT FOR US.
1953 virtual bool OnDataReady()
1955 char* data = this->Read();
1956 /* Check that the data read is a valid pointer and it has some content */
1959 this->in_buffer.append(data);
1960 /* While there is at least one new line in the buffer,
1961 * do something useful (we hope!) with it.
1963 while (in_buffer.find("\n") != std::string::npos)
1965 std::string ret = in_buffer.substr(0,in_buffer.find("\n")-1);
1966 in_buffer = in_buffer.substr(in_buffer.find("\n")+1,in_buffer.length()-in_buffer.find("\n"));
1967 if (ret.find("\r") != std::string::npos)
1968 ret = in_buffer.substr(0,in_buffer.find("\r")-1);
1969 /* Process this one, abort if it
1970 * didnt return true.
1976 memset(result,0,1024);
1978 ServerInstance->Log(DEBUG,"Original string '%s'",ret.c_str());
1979 /* ERROR + CAPAB is still allowed unencryped */
1980 if ((ret.substr(0,7) != "ERROR :") && (ret.substr(0,6) != "CAPAB "))
1982 int nbytes = from64tobits(out, ret.c_str(), 1024);
1983 if ((nbytes > 0) && (nbytes < 1024))
1985 ServerInstance->Log(DEBUG,"m_spanningtree: decrypt %d bytes",nbytes);
1986 ctx_in->Decrypt(out, result, nbytes, 0);
1987 for (int t = 0; t < nbytes; t++)
1988 if (result[t] == '\7') result[t] = 0;
1993 if (!this->ProcessLine(ret))
1995 ServerInstance->Log(DEBUG,"ProcessLine says no!");
2001 /* EAGAIN returns an empty but non-NULL string, so this
2002 * evaluates to TRUE for EAGAIN but to FALSE for EOF.
2004 return (data && !*data);
2007 int WriteLine(std::string line)
2009 ServerInstance->Log(DEBUG,"OUT: %s",line.c_str());
2013 char result64[10240];
2014 if (this->keylength)
2016 // pad it to the key length
2017 int n = this->keylength - (line.length() % this->keylength);
2020 ServerInstance->Log(DEBUG,"Append %d chars to line to make it %d long from %d, key length %d",n,n+line.length(),line.length(),this->keylength);
2021 line.append(n,'\7');
2024 unsigned int ll = line.length();
2025 ctx_out->Encrypt(line.c_str(), result, ll, 0);
2026 to64frombits((unsigned char*)result64,(unsigned char*)result,ll);
2028 //int from64tobits(char *out, const char *in, int maxlen);
2030 return this->Write(line + "\r\n");
2033 /* Handle ERROR command */
2034 bool Error(std::deque<std::string> ¶ms)
2036 if (params.size() < 1)
2038 this->Instance->SNO->WriteToSnoMask('l',"ERROR from %s: %s",(InboundServerName != "" ? InboundServerName.c_str() : myhost.c_str()),params[0].c_str());
2039 /* we will return false to cause the socket to close. */
2043 /* remote MOTD. leet, huh? */
2044 bool Motd(std::string prefix, std::deque<std::string> ¶ms)
2046 if (params.size() > 0)
2048 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
2050 /* It's for our server */
2051 string_list results;
2052 userrec* source = this->Instance->FindNick(prefix);
2056 std::deque<std::string> par;
2057 par.push_back(prefix);
2060 if (!ServerInstance->Config->MOTD.size())
2062 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 422 "+source->nick+" :Message of the day file is missing.";
2063 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2067 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 375 "+source->nick+" :"+ServerInstance->Config->ServerName+" message of the day";
2068 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2070 for (unsigned int i = 0; i < ServerInstance->Config->MOTD.size(); i++)
2072 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 372 "+source->nick+" :- "+ServerInstance->Config->MOTD[i];
2073 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2076 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 376 "+source->nick+" End of message of the day.";
2077 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2083 userrec* source = this->Instance->FindNick(prefix);
2085 DoOneToOne(prefix, "MOTD", params, params[0]);
2091 /* remote ADMIN. leet, huh? */
2092 bool Admin(std::string prefix, std::deque<std::string> ¶ms)
2094 if (params.size() > 0)
2096 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
2098 /* It's for our server */
2099 string_list results;
2100 userrec* source = this->Instance->FindNick(prefix);
2104 std::deque<std::string> par;
2105 par.push_back(prefix);
2108 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 256 "+source->nick+" :Administrative info for "+ServerInstance->Config->ServerName;
2109 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2111 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 257 "+source->nick+" :Name - "+ServerInstance->Config->AdminName;
2112 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2114 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 258 "+source->nick+" :Nickname - "+ServerInstance->Config->AdminNick;
2115 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2117 par[1] = std::string("::")+ServerInstance->Config->ServerName+" 258 "+source->nick+" :E-Mail - "+ServerInstance->Config->AdminEmail;
2118 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2124 userrec* source = this->Instance->FindNick(prefix);
2126 DoOneToOne(prefix, "ADMIN", params, params[0]);
2132 bool Stats(std::string prefix, std::deque<std::string> ¶ms)
2134 /* Get the reply to a STATS query if it matches this servername,
2135 * and send it back as a load of PUSH queries
2137 if (params.size() > 1)
2139 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[1]))
2141 /* It's for our server */
2142 string_list results;
2143 userrec* source = this->Instance->FindNick(prefix);
2146 std::deque<std::string> par;
2147 par.push_back(prefix);
2149 DoStats(this->Instance, *(params[0].c_str()), source, results);
2150 for (size_t i = 0; i < results.size(); i++)
2152 par[1] = "::" + results[i];
2153 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2160 userrec* source = this->Instance->FindNick(prefix);
2162 DoOneToOne(prefix, "STATS", params, params[1]);
2169 /* Because the core won't let users or even SERVERS set +o,
2170 * we use the OPERTYPE command to do this.
2172 bool OperType(std::string prefix, std::deque<std::string> ¶ms)
2174 if (params.size() != 1)
2176 ServerInstance->Log(DEBUG,"Received invalid oper type from %s",prefix.c_str());
2179 std::string opertype = params[0];
2180 userrec* u = this->Instance->FindNick(prefix);
2183 u->modes[UM_OPERATOR] = 1;
2184 strlcpy(u->oper,opertype.c_str(),NICKMAX-1);
2185 DoOneToAllButSender(u->nick,"OPERTYPE",params,u->server);
2190 /* Because Andy insists that services-compatible servers must
2191 * implement SVSNICK and SVSJOIN, that's exactly what we do :p
2193 bool ForceNick(std::string prefix, std::deque<std::string> ¶ms)
2195 if (params.size() < 3)
2198 userrec* u = this->Instance->FindNick(params[0]);
2202 DoOneToAllButSender(prefix,"SVSNICK",params,prefix);
2205 std::deque<std::string> par;
2206 par.push_back(params[1]);
2207 /* This is not required as one is sent in OnUserPostNick below
2209 //DoOneToMany(u->nick,"NICK",par);
2210 if (!u->ForceNickChange(params[1].c_str()))
2212 userrec::QuitUser(this->Instance, u, "Nickname collision");
2215 u->age = atoi(params[2].c_str());
2221 bool ServiceJoin(std::string prefix, std::deque<std::string> ¶ms)
2223 if (params.size() < 2)
2226 userrec* u = this->Instance->FindNick(params[0]);
2230 chanrec::JoinUser(this->Instance, u, params[1].c_str(), false);
2231 DoOneToAllButSender(prefix,"SVSJOIN",params,prefix);
2236 bool RemoteRehash(std::string prefix, std::deque<std::string> ¶ms)
2238 if (params.size() < 1)
2241 std::string servermask = params[0];
2243 if (this->Instance->MatchText(this->Instance->Config->ServerName,servermask))
2245 this->Instance->SNO->WriteToSnoMask('l',"Remote rehash initiated from server \002"+prefix+"\002.");
2246 this->Instance->RehashServer();
2247 ReadConfiguration(false);
2249 DoOneToAllButSender(prefix,"REHASH",params,prefix);
2253 bool RemoteKill(std::string prefix, std::deque<std::string> ¶ms)
2255 if (params.size() != 2)
2258 std::string nick = params[0];
2259 userrec* u = this->Instance->FindNick(prefix);
2260 userrec* who = this->Instance->FindNick(nick);
2264 /* Prepend kill source, if we don't have one */
2265 std::string sourceserv = prefix;
2268 sourceserv = u->server;
2270 if (*(params[1].c_str()) != '[')
2272 params[1] = "[" + sourceserv + "] Killed (" + params[1] +")";
2274 std::string reason = params[1];
2275 params[1] = ":" + params[1];
2276 DoOneToAllButSender(prefix,"KILL",params,sourceserv);
2277 who->Write(":%s KILL %s :%s (%s)", sourceserv.c_str(), who->nick, sourceserv.c_str(), reason.c_str());
2278 userrec::QuitUser(this->Instance,who,reason);
2283 bool LocalPong(std::string prefix, std::deque<std::string> ¶ms)
2285 if (params.size() < 1)
2288 if (params.size() == 1)
2290 TreeServer* ServerSource = FindServer(prefix);
2293 ServerSource->SetPingFlag();
2298 std::string forwardto = params[1];
2299 if (forwardto == this->Instance->Config->ServerName)
2302 * this is a PONG for us
2303 * if the prefix is a user, check theyre local, and if they are,
2304 * dump the PONG reply back to their fd. If its a server, do nowt.
2305 * Services might want to send these s->s, but we dont need to yet.
2307 userrec* u = this->Instance->FindNick(prefix);
2311 u->WriteServ("PONG %s %s",params[0].c_str(),params[1].c_str());
2316 // not for us, pass it on :)
2317 DoOneToOne(prefix,"PONG",params,forwardto);
2324 bool MetaData(std::string prefix, std::deque<std::string> ¶ms)
2326 if (params.size() < 3)
2329 TreeServer* ServerSource = FindServer(prefix);
2333 if (params[0] == "*")
2335 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_OTHER,NULL,params[1],params[2]));
2337 else if (*(params[0].c_str()) == '#')
2339 chanrec* c = this->Instance->FindChan(params[0]);
2342 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]));
2345 else if (*(params[0].c_str()) != '#')
2347 userrec* u = this->Instance->FindNick(params[0]);
2350 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2]));
2355 params[2] = ":" + params[2];
2356 DoOneToAllButSender(prefix,"METADATA",params,prefix);
2360 bool ServerVersion(std::string prefix, std::deque<std::string> ¶ms)
2362 if (params.size() < 1)
2365 TreeServer* ServerSource = FindServer(prefix);
2369 ServerSource->SetVersion(params[0]);
2371 params[0] = ":" + params[0];
2372 DoOneToAllButSender(prefix,"VERSION",params,prefix);
2376 bool ChangeHost(std::string prefix, std::deque<std::string> ¶ms)
2378 if (params.size() < 1)
2381 userrec* u = this->Instance->FindNick(prefix);
2385 u->ChangeDisplayedHost(params[0].c_str());
2386 DoOneToAllButSender(prefix,"FHOST",params,u->server);
2391 bool AddLine(std::string prefix, std::deque<std::string> ¶ms)
2393 if (params.size() < 6)
2396 bool propogate = false;
2398 switch (*(params[0].c_str()))
2401 propogate = ServerInstance->XLines->add_zline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2402 ServerInstance->XLines->zline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2405 propogate = ServerInstance->XLines->add_qline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2406 ServerInstance->XLines->qline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2409 propogate = ServerInstance->XLines->add_eline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2410 ServerInstance->XLines->eline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2413 propogate = ServerInstance->XLines->add_gline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2414 ServerInstance->XLines->gline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2417 propogate = ServerInstance->XLines->add_kline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2420 /* Just in case... */
2421 this->Instance->SNO->WriteToSnoMask('x',"\2WARNING\2: Invalid xline type '"+params[0]+"' sent by server "+prefix+", ignored!");
2426 /* Send it on its way */
2429 if (atoi(params[4].c_str()))
2431 this->Instance->SNO->WriteToSnoMask('x',"%s Added %cLINE on %s to expire in %lu seconds (%s).",prefix.c_str(),*(params[0].c_str()),params[1].c_str(),atoi(params[4].c_str()),params[5].c_str());
2435 this->Instance->SNO->WriteToSnoMask('x',"%s Added permenant %cLINE on %s (%s).",prefix.c_str(),*(params[0].c_str()),params[1].c_str(),params[5].c_str());
2437 params[5] = ":" + params[5];
2438 DoOneToAllButSender(prefix,"ADDLINE",params,prefix);
2440 if (!this->bursting)
2442 ServerInstance->Log(DEBUG,"Applying lines...");
2443 ServerInstance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
2448 bool ChangeName(std::string prefix, std::deque<std::string> ¶ms)
2450 if (params.size() < 1)
2453 userrec* u = this->Instance->FindNick(prefix);
2457 u->ChangeName(params[0].c_str());
2458 params[0] = ":" + params[0];
2459 DoOneToAllButSender(prefix,"FNAME",params,u->server);
2464 bool Whois(std::string prefix, std::deque<std::string> ¶ms)
2466 if (params.size() < 1)
2469 ServerInstance->Log(DEBUG,"In IDLE command");
2470 userrec* u = this->Instance->FindNick(prefix);
2474 ServerInstance->Log(DEBUG,"USER EXISTS: %s",u->nick);
2475 // an incoming request
2476 if (params.size() == 1)
2478 userrec* x = this->Instance->FindNick(params[0]);
2479 if ((x) && (IS_LOCAL(x)))
2481 userrec* x = this->Instance->FindNick(params[0]);
2482 ServerInstance->Log(DEBUG,"Got IDLE");
2483 char signon[MAXBUF];
2485 ServerInstance->Log(DEBUG,"Sending back IDLE 3");
2486 snprintf(signon,MAXBUF,"%lu",(unsigned long)x->signon);
2487 snprintf(idle,MAXBUF,"%lu",(unsigned long)abs((x->idle_lastmsg)-time(NULL)));
2488 std::deque<std::string> par;
2489 par.push_back(prefix);
2490 par.push_back(signon);
2491 par.push_back(idle);
2492 // ours, we're done, pass it BACK
2493 DoOneToOne(params[0],"IDLE",par,u->server);
2497 // not ours pass it on
2498 DoOneToOne(prefix,"IDLE",params,x->server);
2501 else if (params.size() == 3)
2503 std::string who_did_the_whois = params[0];
2504 userrec* who_to_send_to = this->Instance->FindNick(who_did_the_whois);
2505 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
2507 ServerInstance->Log(DEBUG,"Got final IDLE");
2508 // an incoming reply to a whois we sent out
2509 std::string nick_whoised = prefix;
2510 unsigned long signon = atoi(params[1].c_str());
2511 unsigned long idle = atoi(params[2].c_str());
2512 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
2513 do_whois(this->Instance,who_to_send_to,u,signon,idle,nick_whoised.c_str());
2517 // not ours, pass it on
2518 DoOneToOne(prefix,"IDLE",params,who_to_send_to->server);
2525 bool Push(std::string prefix, std::deque<std::string> ¶ms)
2527 if (params.size() < 2)
2530 userrec* u = this->Instance->FindNick(params[0]);
2537 u->Write(params[1]);
2541 // continue the raw onwards
2542 params[1] = ":" + params[1];
2543 DoOneToOne(prefix,"PUSH",params,u->server);
2548 bool Time(std::string prefix, std::deque<std::string> ¶ms)
2550 // :source.server TIME remote.server sendernick
2551 // :remote.server TIME source.server sendernick TS
2552 if (params.size() == 2)
2554 // someone querying our time?
2555 if (this->Instance->Config->ServerName == params[0])
2557 userrec* u = this->Instance->FindNick(params[1]);
2561 snprintf(curtime,256,"%lu",(unsigned long)time(NULL));
2562 params.push_back(curtime);
2564 DoOneToOne(this->Instance->Config->ServerName,"TIME",params,params[0]);
2569 // not us, pass it on
2570 userrec* u = this->Instance->FindNick(params[1]);
2572 DoOneToOne(prefix,"TIME",params,params[0]);
2575 else if (params.size() == 3)
2577 // a response to a previous TIME
2578 userrec* u = this->Instance->FindNick(params[1]);
2579 if ((u) && (IS_LOCAL(u)))
2581 time_t rawtime = atol(params[2].c_str());
2582 struct tm * timeinfo;
2583 timeinfo = localtime(&rawtime);
2585 snprintf(tms,26,"%s",asctime(timeinfo));
2587 u->WriteServ("391 %s %s :%s",u->nick,prefix.c_str(),tms);
2592 DoOneToOne(prefix,"TIME",params,u->server);
2598 bool LocalPing(std::string prefix, std::deque<std::string> ¶ms)
2600 if (params.size() < 1)
2603 if (params.size() == 1)
2605 std::string stufftobounce = params[0];
2606 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" PONG "+stufftobounce);
2611 std::string forwardto = params[1];
2612 if (forwardto == this->Instance->Config->ServerName)
2614 // this is a ping for us, send back PONG to the requesting server
2615 params[1] = params[0];
2616 params[0] = forwardto;
2617 DoOneToOne(forwardto,"PONG",params,params[1]);
2621 // not for us, pass it on :)
2622 DoOneToOne(prefix,"PING",params,forwardto);
2628 bool RemoteServer(std::string prefix, std::deque<std::string> ¶ms)
2630 if (params.size() < 4)
2633 std::string servername = params[0];
2634 std::string password = params[1];
2635 // hopcount is not used for a remote server, we calculate this ourselves
2636 std::string description = params[3];
2637 TreeServer* ParentOfThis = FindServer(prefix);
2641 this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
2644 TreeServer* CheckDupe = FindServer(servername);
2647 this->WriteLine("ERROR :Server "+servername+" already exists!");
2648 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+servername+"\2 denied, already exists");
2651 TreeServer* Node = new TreeServer(this->Instance,servername,description,ParentOfThis,NULL);
2652 ParentOfThis->AddChild(Node);
2653 params[3] = ":" + params[3];
2654 DoOneToAllButSender(prefix,"SERVER",params,prefix);
2655 this->Instance->SNO->WriteToSnoMask('l',"Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
2659 bool Outbound_Reply_Server(std::deque<std::string> ¶ms)
2661 if (params.size() < 4)
2664 irc::string servername = params[0].c_str();
2665 std::string sname = params[0];
2666 std::string password = params[1];
2667 int hops = atoi(params[2].c_str());
2671 this->WriteLine("ERROR :Server too far away for authentication");
2672 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
2675 std::string description = params[3];
2676 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2678 if ((x->Name == servername) && (x->RecvPass == password))
2680 TreeServer* CheckDupe = FindServer(sname);
2683 this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
2684 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
2687 // Begin the sync here. this kickstarts the
2688 // other side, waiting in WAIT_AUTH_2 state,
2689 // into starting their burst, as it shows
2690 // that we're happy.
2691 this->LinkState = CONNECTED;
2692 // we should add the details of this server now
2693 // to the servers tree, as a child of the root
2695 TreeServer* Node = new TreeServer(this->Instance,sname,description,TreeRoot,this);
2696 TreeRoot->AddChild(Node);
2697 params[3] = ":" + params[3];
2698 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,sname);
2699 this->bursting = true;
2700 this->DoBurst(Node);
2704 this->WriteLine("ERROR :Invalid credentials");
2705 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
2709 bool Inbound_Server(std::deque<std::string> ¶ms)
2711 if (params.size() < 4)
2714 irc::string servername = params[0].c_str();
2715 std::string sname = params[0];
2716 std::string password = params[1];
2717 int hops = atoi(params[2].c_str());
2721 this->WriteLine("ERROR :Server too far away for authentication");
2722 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
2725 std::string description = params[3];
2726 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2728 if ((x->Name == servername) && (x->RecvPass == password))
2730 TreeServer* CheckDupe = FindServer(sname);
2733 this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
2734 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
2737 /* If the config says this link is encrypted, but the remote side
2738 * hasnt bothered to send the AES command before SERVER, then we
2739 * boot them off as we MUST have this connection encrypted.
2741 if ((x->EncryptionKey != "") && (!this->ctx_in))
2743 this->WriteLine("ERROR :This link requires AES encryption to be enabled. Plaintext connection refused.");
2744 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, remote server did not enable AES.");
2747 this->Instance->SNO->WriteToSnoMask('l',"Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] ("+description+")");
2748 this->InboundServerName = sname;
2749 this->InboundDescription = description;
2750 // this is good. Send our details: Our server name and description and hopcount of 0,
2751 // along with the sendpass from this block.
2752 this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc);
2753 // move to the next state, we are now waiting for THEM.
2754 this->LinkState = WAIT_AUTH_2;
2758 this->WriteLine("ERROR :Invalid credentials");
2759 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
2763 void Split(std::string line, std::deque<std::string> &n)
2766 irc::tokenstream tokens(line);
2768 while ((param = tokens.GetToken()) != "")
2773 bool ProcessLine(std::string line)
2775 std::deque<std::string> params;
2776 irc::string command;
2782 line = line.substr(0, line.find_first_of("\r\n"));
2784 ServerInstance->Log(DEBUG,"IN: %s", line.c_str());
2786 this->Split(line.c_str(),params);
2788 if ((params[0][0] == ':') && (params.size() > 1))
2790 prefix = params[0].substr(1);
2794 command = params[0].c_str();
2797 if ((!this->ctx_in) && (command == "AES"))
2799 std::string sserv = params[0];
2800 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2802 if ((x->EncryptionKey != "") && (x->Name == sserv))
2804 this->InitAES(x->EncryptionKey,sserv);
2810 else if ((this->ctx_in) && (command == "AES"))
2812 this->Instance->SNO->WriteToSnoMask('l',"\2AES\2: Encryption already enabled on this connection yet %s is trying to enable it twice!",params[0].c_str());
2815 switch (this->LinkState)
2820 // Waiting for SERVER command from remote server. Server initiating
2821 // the connection sends the first SERVER command, listening server
2822 // replies with theirs if its happy, then if the initiator is happy,
2823 // it starts to send its net sync, which starts the merge, otherwise
2824 // it sends an ERROR.
2825 if (command == "PASS")
2827 /* Silently ignored */
2829 else if (command == "SERVER")
2831 return this->Inbound_Server(params);
2833 else if (command == "ERROR")
2835 return this->Error(params);
2837 else if (command == "USER")
2839 this->WriteLine("ERROR :Client connections to this port are prohibited.");
2842 else if (command == "CAPAB")
2844 return this->Capab(params);
2846 else if ((command == "U") || (command == "S"))
2848 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
2853 this->WriteLine("ERROR :Invalid command in negotiation phase.");
2858 // Waiting for start of other side's netmerge to say they liked our
2860 if (command == "SERVER")
2862 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
2866 else if ((command == "U") || (command == "S"))
2868 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
2871 else if (command == "BURST")
2875 /* If a time stamp is provided, try and check syncronization */
2876 time_t THEM = atoi(params[0].c_str());
2877 long delta = THEM-time(NULL);
2878 if ((delta < -600) || (delta > 600))
2880 this->Instance->SNO->WriteToSnoMask('l',"\2ERROR\2: Your clocks are out by %d seconds (this is more than ten minutes). Link aborted, \2PLEASE SYNC YOUR CLOCKS!\2",abs(delta));
2881 this->WriteLine("ERROR :Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than ten minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!");
2884 else if ((delta < -60) || (delta > 60))
2886 this->Instance->SNO->WriteToSnoMask('l',"\2WARNING\2: Your clocks are out by %d seconds, please consider synching your clocks.",abs(delta));
2889 this->LinkState = CONNECTED;
2890 Node = new TreeServer(this->Instance,InboundServerName,InboundDescription,TreeRoot,this);
2891 TreeRoot->AddChild(Node);
2893 params.push_back(InboundServerName);
2894 params.push_back("*");
2895 params.push_back("1");
2896 params.push_back(":"+InboundDescription);
2897 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,InboundServerName);
2898 this->bursting = true;
2899 this->DoBurst(Node);
2901 else if (command == "ERROR")
2903 return this->Error(params);
2905 else if (command == "CAPAB")
2907 return this->Capab(params);
2912 this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
2916 if (command == "SERVER")
2918 // another server we connected to, which was in WAIT_AUTH_1 state,
2919 // has just sent us their credentials. If we get this far, theyre
2920 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
2921 // if we're happy with this, we should send our netburst which
2922 // kickstarts the merge.
2923 return this->Outbound_Reply_Server(params);
2925 else if (command == "ERROR")
2927 return this->Error(params);
2931 // This is the 'authenticated' state, when all passwords
2932 // have been exchanged and anything past this point is taken
2937 std::string direction = prefix;
2938 userrec* t = this->Instance->FindNick(prefix);
2941 direction = t->server;
2943 TreeServer* route_back_again = BestRouteTo(direction);
2944 if ((!route_back_again) || (route_back_again->GetSocket() != this))
2946 if (route_back_again)
2947 ServerInstance->Log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
2952 * When there is activity on the socket, reset the ping counter so
2953 * that we're not wasting bandwidth pinging an active server.
2955 route_back_again->SetNextPingTime(time(NULL) + 60);
2956 route_back_again->SetPingFlag();
2959 if (command == "SVSMODE")
2961 /* Services expects us to implement
2962 * SVSMODE. In inspircd its the same as
2967 std::string target = "";
2968 /* Yes, know, this is a mess. Its reasonably fast though as we're
2969 * working with std::string here.
2971 if ((command == "NICK") && (params.size() > 1))
2973 return this->IntroduceClient(prefix,params);
2975 else if (command == "FJOIN")
2977 return this->ForceJoin(prefix,params);
2979 else if (command == "STATS")
2981 return this->Stats(prefix, params);
2983 else if (command == "MOTD")
2985 return this->Motd(prefix, params);
2987 else if (command == "ADMIN")
2989 return this->Admin(prefix, params);
2991 else if (command == "SERVER")
2993 return this->RemoteServer(prefix,params);
2995 else if (command == "ERROR")
2997 return this->Error(params);
2999 else if (command == "OPERTYPE")
3001 return this->OperType(prefix,params);
3003 else if (command == "FMODE")
3005 return this->ForceMode(prefix,params);
3007 else if (command == "KILL")
3009 return this->RemoteKill(prefix,params);
3011 else if (command == "FTOPIC")
3013 return this->ForceTopic(prefix,params);
3015 else if (command == "REHASH")
3017 return this->RemoteRehash(prefix,params);
3019 else if (command == "METADATA")
3021 return this->MetaData(prefix,params);
3023 else if (command == "PING")
3026 * We just got a ping from a server that's bursting.
3027 * This can't be right, so set them to not bursting, and
3028 * apply their lines.
3032 this->bursting = false;
3033 ServerInstance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
3037 prefix = this->GetName();
3039 return this->LocalPing(prefix,params);
3041 else if (command == "PONG")
3044 * We just got a pong from a server that's bursting.
3045 * This can't be right, so set them to not bursting, and
3046 * apply their lines.
3050 this->bursting = false;
3051 ServerInstance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
3055 prefix = this->GetName();
3057 return this->LocalPong(prefix,params);
3059 else if (command == "VERSION")
3061 return this->ServerVersion(prefix,params);
3063 else if (command == "FHOST")
3065 return this->ChangeHost(prefix,params);
3067 else if (command == "FNAME")
3069 return this->ChangeName(prefix,params);
3071 else if (command == "ADDLINE")
3073 return this->AddLine(prefix,params);
3075 else if (command == "SVSNICK")
3079 prefix = this->GetName();
3081 return this->ForceNick(prefix,params);
3083 else if (command == "IDLE")
3085 return this->Whois(prefix,params);
3087 else if (command == "PUSH")
3089 return this->Push(prefix,params);
3091 else if (command == "TIME")
3093 return this->Time(prefix,params);
3095 else if ((command == "KICK") && (IsServer(prefix)))
3097 std::string sourceserv = this->myhost;
3098 if (params.size() == 3)
3100 userrec* user = this->Instance->FindNick(params[1]);
3101 chanrec* chan = this->Instance->FindChan(params[0]);
3104 if (!chan->ServerKickUser(user, params[2].c_str(), false))
3105 /* Yikes, the channels gone! */
3109 if (this->InboundServerName != "")
3111 sourceserv = this->InboundServerName;
3113 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
3115 else if (command == "SVSJOIN")
3119 prefix = this->GetName();
3121 return this->ServiceJoin(prefix,params);
3123 else if (command == "SQUIT")
3125 if (params.size() == 2)
3127 this->Squit(FindServer(params[0]),params[1]);
3131 else if (command == "ENDBURST")
3133 this->bursting = false;
3134 ServerInstance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
3135 std::string sourceserv = this->myhost;
3136 if (this->InboundServerName != "")
3138 sourceserv = this->InboundServerName;
3140 this->Instance->SNO->WriteToSnoMask('l',"Received end of netburst from \2%s\2",sourceserv.c_str());
3145 // not a special inter-server command.
3146 // Emulate the actual user doing the command,
3147 // this saves us having a huge ugly parser.
3148 userrec* who = this->Instance->FindNick(prefix);
3149 std::string sourceserv = this->myhost;
3150 if (this->InboundServerName != "")
3152 sourceserv = this->InboundServerName;
3156 if ((command == "NICK") && (params.size() > 0))
3158 /* On nick messages, check that the nick doesnt
3159 * already exist here. If it does, kill their copy,
3162 userrec* x = this->Instance->FindNick(params[0]);
3163 if ((x) && (x != who))
3165 std::deque<std::string> p;
3166 p.push_back(params[0]);
3167 p.push_back("Nickname collision ("+prefix+" -> "+params[0]+")");
3168 DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
3170 p.push_back(prefix);
3171 p.push_back("Nickname collision");
3172 DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
3173 userrec::QuitUser(this->Instance,x,"Nickname collision ("+prefix+" -> "+params[0]+")");
3174 userrec* y = this->Instance->FindNick(prefix);
3177 userrec::QuitUser(this->Instance,y,"Nickname collision");
3179 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
3183 target = who->server;
3184 const char* strparams[127];
3185 for (unsigned int q = 0; q < params.size(); q++)
3187 strparams[q] = params[q].c_str();
3189 if (!this->Instance->CallCommandHandler(command.c_str(), strparams, params.size(), who))
3191 this->WriteLine("ERROR :Unrecognised command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules");
3197 // its not a user. Its either a server, or somethings screwed up.
3198 if (IsServer(prefix))
3200 target = this->Instance->Config->ServerName;
3204 ServerInstance->Log(DEBUG,"Command with unknown origin '%s'",prefix.c_str());
3208 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
3217 virtual std::string GetName()
3219 std::string sourceserv = this->myhost;
3220 if (this->InboundServerName != "")
3222 sourceserv = this->InboundServerName;
3227 virtual void OnTimeout()
3229 if (this->LinkState == CONNECTING)
3231 this->Instance->SNO->WriteToSnoMask('l',"CONNECT: Connection to \002"+myhost+"\002 timed out.");
3232 Link* MyLink = FindLink(myhost);
3238 virtual void OnClose()
3240 // Connection closed.
3241 // If the connection is fully up (state CONNECTED)
3242 // then propogate a netsplit to all peers.
3243 std::string quitserver = this->myhost;
3244 if (this->InboundServerName != "")
3246 quitserver = this->InboundServerName;
3248 TreeServer* s = FindServer(quitserver);
3251 Squit(s,"Remote host closed the connection");
3253 this->Instance->SNO->WriteToSnoMask('l',"Connection to '\2%s\2' failed.",quitserver.c_str());
3256 virtual int OnIncomingConnection(int newsock, char* ip)
3258 /* To prevent anyone from attempting to flood opers/DDoS by connecting to the server port,
3259 * or discovering if this port is the server port, we don't allow connections from any
3260 * IPs for which we don't have a link block.
3264 found = (std::find(ValidIPs.begin(), ValidIPs.end(), ip) != ValidIPs.end());
3267 for (vector<std::string>::iterator i = ValidIPs.begin(); i != ValidIPs.end(); i++)
3268 if (MatchCIDR(ip, (*i).c_str()))
3273 this->Instance->SNO->WriteToSnoMask('l',"Server connection from %s denied (no link blocks with that IP address)", ip);
3278 TreeSocket* s = new TreeSocket(this->Instance, newsock, ip);
3279 s = s; /* Whinge whinge whinge, thats all GCC ever does. */
3284 /** This class is used to resolve server hostnames during /connect and autoconnect.
3285 * As of 1.1, the resolver system is seperated out from InspSocket, so we must do this
3286 * resolver step first ourselves if we need it. This is totally nonblocking, and will
3287 * callback to OnLookupComplete or OnError when completed. Once it has completed we
3288 * will have an IP address which we can then use to continue our connection.
3290 class ServernameResolver : public Resolver
3293 /** A copy of the Link tag info for what we're connecting to.
3294 * We take a copy, rather than using a pointer, just in case the
3295 * admin takes the tag away and rehashes while the domain is resolving.
3299 ServernameResolver(InspIRCd* Instance, const std::string &hostname, Link x) : Resolver(Instance, hostname, DNS_QUERY_FORWARD), MyLink(x)
3301 /* Nothing in here, folks */
3304 void OnLookupComplete(const std::string &result)
3306 /* Initiate the connection, now that we have an IP to use.
3307 * Passing a hostname directly to InspSocket causes it to
3308 * just bail and set its FD to -1.
3310 TreeServer* CheckDupe = FindServer(MyLink.Name.c_str());
3311 if (!CheckDupe) /* Check that nobody tried to connect it successfully while we were resolving */
3313 TreeSocket* newsocket = new TreeSocket(ServerInstance, result,MyLink.Port,false,10,MyLink.Name.c_str());
3314 if (newsocket->GetFd() > -1)
3320 /* Something barfed, show the opers */
3321 ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",MyLink.Name.c_str(),strerror(errno));
3323 DoFailOver(&MyLink);
3328 void OnError(ResolverError e, const std::string &errormessage)
3331 ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: Unable to resolve hostname - %s",MyLink.Name.c_str(),errormessage.c_str());
3332 DoFailOver(&MyLink);
3336 class SecurityIPResolver : public Resolver
3341 SecurityIPResolver(InspIRCd* Instance, const std::string &hostname, Link x) : Resolver(Instance, hostname, DNS_QUERY_FORWARD), MyLink(x)
3345 void OnLookupComplete(const std::string &result)
3347 ServerInstance->Log(DEBUG,"Security IP cache: Adding IP address '%s' for Link '%s'",result.c_str(),MyLink.Name.c_str());
3348 ValidIPs.push_back(result);
3351 void OnError(ResolverError e, const std::string &errormessage)
3353 ServerInstance->Log(DEBUG,"Could not resolve IP associated with Link '%s': %s",MyLink.Name.c_str(),errormessage.c_str());
3357 void AddThisServer(TreeServer* server, std::deque<TreeServer*> &list)
3359 for (unsigned int c = 0; c < list.size(); c++)
3361 if (list[c] == server)
3366 list.push_back(server);
3369 // returns a list of DIRECT servernames for a specific channel
3370 void GetListOfServersForChannel(chanrec* c, std::deque<TreeServer*> &list)
3372 CUList *ulist = c->GetUsers();
3373 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
3375 if (i->second->GetFd() < 0)
3377 TreeServer* best = BestRouteTo(i->second->server);
3379 AddThisServer(best,list);
3385 bool DoOneToAllButSenderRaw(std::string data, std::string omit, std::string prefix, irc::string command, std::deque<std::string> ¶ms)
3387 TreeServer* omitroute = BestRouteTo(omit);
3388 if ((command == "NOTICE") || (command == "PRIVMSG"))
3390 if (params.size() >= 2)
3393 if ((*(params[0].c_str()) == '@') || (*(params[0].c_str()) == '%') || (*(params[0].c_str()) == '+'))
3395 params[0] = params[0].substr(1, params[0].length()-1);
3397 if ((*(params[0].c_str()) != '#') && (*(params[0].c_str()) != '$'))
3399 // special routing for private messages/notices
3400 userrec* d = ServerInstance->FindNick(params[0]);
3403 std::deque<std::string> par;
3404 par.push_back(params[0]);
3405 par.push_back(":"+params[1]);
3406 DoOneToOne(prefix,command.c_str(),par,d->server);
3410 else if (*(params[0].c_str()) == '$')
3412 std::deque<std::string> par;
3413 par.push_back(params[0]);
3414 par.push_back(":"+params[1]);
3415 DoOneToAllButSender(prefix,command.c_str(),par,omitroute->GetName());
3420 ServerInstance->Log(DEBUG,"Channel privmsg going to chan %s",params[0].c_str());
3421 chanrec* c = ServerInstance->FindChan(params[0]);
3424 std::deque<TreeServer*> list;
3425 GetListOfServersForChannel(c,list);
3426 ServerInstance->Log(DEBUG,"Got a list of %d servers",list.size());
3427 unsigned int lsize = list.size();
3428 for (unsigned int i = 0; i < lsize; i++)
3430 TreeSocket* Sock = list[i]->GetSocket();
3431 if ((Sock) && (list[i]->GetName() != omit) && (omitroute != list[i]))
3433 ServerInstance->Log(DEBUG,"Writing privmsg to server %s",list[i]->GetName().c_str());
3434 Sock->WriteLine(data);
3442 unsigned int items = TreeRoot->ChildCount();
3443 for (unsigned int x = 0; x < items; x++)
3445 TreeServer* Route = TreeRoot->GetChild(x);
3446 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
3448 TreeSocket* Sock = Route->GetSocket();
3450 Sock->WriteLine(data);
3456 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string omit)
3458 TreeServer* omitroute = BestRouteTo(omit);
3459 std::string FullLine = ":" + prefix + " " + command;
3460 unsigned int words = params.size();
3461 for (unsigned int x = 0; x < words; x++)
3463 FullLine = FullLine + " " + params[x];
3465 unsigned int items = TreeRoot->ChildCount();
3466 for (unsigned int x = 0; x < items; x++)
3468 TreeServer* Route = TreeRoot->GetChild(x);
3469 // Send the line IF:
3470 // The route has a socket (its a direct connection)
3471 // The route isnt the one to be omitted
3472 // The route isnt the path to the one to be omitted
3473 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
3475 TreeSocket* Sock = Route->GetSocket();
3477 Sock->WriteLine(FullLine);
3483 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> ¶ms)
3485 std::string FullLine = ":" + prefix + " " + command;
3486 unsigned int words = params.size();
3487 for (unsigned int x = 0; x < words; x++)
3489 FullLine = FullLine + " " + params[x];
3491 unsigned int items = TreeRoot->ChildCount();
3492 for (unsigned int x = 0; x < items; x++)
3494 TreeServer* Route = TreeRoot->GetChild(x);
3495 if (Route && Route->GetSocket())
3497 TreeSocket* Sock = Route->GetSocket();
3499 Sock->WriteLine(FullLine);
3505 bool DoOneToMany(const char* prefix, const char* command, std::deque<std::string> ¶ms)
3507 std::string spfx = prefix;
3508 std::string scmd = command;
3509 return DoOneToMany(spfx, scmd, params);
3512 bool DoOneToAllButSender(const char* prefix, const char* command, std::deque<std::string> ¶ms, std::string omit)
3514 std::string spfx = prefix;
3515 std::string scmd = command;
3516 return DoOneToAllButSender(spfx, scmd, params, omit);
3519 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string target)
3521 TreeServer* Route = BestRouteTo(target);
3524 std::string FullLine = ":" + prefix + " " + command;
3525 unsigned int words = params.size();
3526 for (unsigned int x = 0; x < words; x++)
3528 FullLine = FullLine + " " + params[x];
3530 if (Route && Route->GetSocket())
3532 TreeSocket* Sock = Route->GetSocket();
3534 Sock->WriteLine(FullLine);
3544 std::vector<TreeSocket*> Bindings;
3546 void ReadConfiguration(bool rebind)
3548 Conf = new ConfigReader(ServerInstance);
3551 for (int j =0; j < Conf->Enumerate("bind"); j++)
3553 std::string Type = Conf->ReadValue("bind","type",j);
3554 std::string IP = Conf->ReadValue("bind","address",j);
3555 long Port = Conf->ReadInteger("bind","port",j,true);
3556 if (Type == "servers")
3562 TreeSocket* listener = new TreeSocket(ServerInstance, IP.c_str(),Port,true,10);
3563 if (listener->GetState() == I_LISTENING)
3565 Bindings.push_back(listener);
3569 ServerInstance->Log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port %d",Port);
3576 FlatLinks = Conf->ReadFlag("options","flatlinks",0);
3577 HideULines = Conf->ReadFlag("options","hideulines",0);
3580 for (int j =0; j < Conf->Enumerate("link"); j++)
3583 std::string Allow = Conf->ReadValue("link","allowmask",j);
3584 L.Name = (Conf->ReadValue("link","name",j)).c_str();
3585 L.IPAddr = Conf->ReadValue("link","ipaddr",j);
3586 L.FailOver = Conf->ReadValue("link","failover",j).c_str();
3587 L.Port = Conf->ReadInteger("link","port",j,true);
3588 L.SendPass = Conf->ReadValue("link","sendpass",j);
3589 L.RecvPass = Conf->ReadValue("link","recvpass",j);
3590 L.AutoConnect = Conf->ReadInteger("link","autoconnect",j,true);
3591 L.EncryptionKey = Conf->ReadValue("link","encryptionkey",j);
3592 L.HiddenFromStats = Conf->ReadFlag("link","hidden",j);
3593 L.NextConnectTime = time(NULL) + L.AutoConnect;
3594 /* Bugfix by brain, do not allow people to enter bad configurations */
3595 if (L.Name != ServerInstance->Config->ServerName)
3597 if ((L.IPAddr != "") && (L.RecvPass != "") && (L.SendPass != "") && (L.Name != "") && (L.Port))
3599 ValidIPs.push_back(L.IPAddr);
3602 ValidIPs.push_back(Allow);
3604 /* Needs resolving */
3606 if (insp_aton(L.IPAddr.c_str(), &binip) < 1)
3610 SecurityIPResolver* sr = new SecurityIPResolver(ServerInstance, L.IPAddr, L);
3611 ServerInstance->AddResolver(sr);
3613 catch (ModuleException& e)
3615 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
3619 LinkBlocks.push_back(L);
3620 ServerInstance->Log(DEBUG,"m_spanningtree: Read server %s with host %s:%d",L.Name.c_str(),L.IPAddr.c_str(),L.Port);
3626 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', IP address not defined!",L.Name.c_str());
3628 else if (L.RecvPass == "")
3630 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', recvpass not defined!",L.Name.c_str());
3632 else if (L.SendPass == "")
3634 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', sendpass not defined!",L.Name.c_str());
3636 else if (L.Name == "")
3638 ServerInstance->Log(DEFAULT,"Invalid configuration, link tag without a name!");
3642 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', no port specified!",L.Name.c_str());
3648 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', link tag has the same server name as the local server!",L.Name.c_str());
3655 class ModuleSpanningTree : public Module
3657 std::vector<TreeSocket*> Bindings;
3660 unsigned int max_local;
3661 unsigned int max_global;
3662 cmd_rconnect* command_rconnect;
3666 ModuleSpanningTree(InspIRCd* Me)
3667 : Module::Module(Me), max_local(0), max_global(0)
3672 ::ServerInstance = Me;
3674 // Create the root of the tree
3675 TreeRoot = new TreeServer(ServerInstance, ServerInstance->Config->ServerName, ServerInstance->Config->ServerDesc);
3677 ReadConfiguration(true);
3679 command_rconnect = new cmd_rconnect(ServerInstance, this);
3680 ServerInstance->AddCommand(command_rconnect);
3683 void ShowLinks(TreeServer* Current, userrec* user, int hops)
3685 std::string Parent = TreeRoot->GetName();
3686 if (Current->GetParent())
3688 Parent = Current->GetParent()->GetName();
3690 for (unsigned int q = 0; q < Current->ChildCount(); q++)
3692 if ((HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str())))
3696 ShowLinks(Current->GetChild(q),user,hops+1);
3701 ShowLinks(Current->GetChild(q),user,hops+1);
3704 /* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */
3705 if ((HideULines) && (ServerInstance->ULine(Current->GetName().c_str())) && (!*user->oper))
3707 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());
3710 int CountLocalServs()
3712 return TreeRoot->ChildCount();
3717 return serverlist.size();
3720 void HandleLinks(const char** parameters, int pcnt, userrec* user)
3722 ShowLinks(TreeRoot,user,0);
3723 user->WriteServ("365 %s * :End of /LINKS list.",user->nick);
3727 void HandleLusers(const char** parameters, int pcnt, userrec* user)
3729 unsigned int n_users = ServerInstance->UserCount();
3731 /* Only update these when someone wants to see them, more efficient */
3732 if ((unsigned int)ServerInstance->LocalUserCount() > max_local)
3733 max_local = ServerInstance->LocalUserCount();
3734 if (n_users > max_global)
3735 max_global = n_users;
3737 user->WriteServ("251 %s :There are %d users and %d invisible on %d servers",user->nick,n_users-ServerInstance->InvisibleUserCount(),ServerInstance->InvisibleUserCount(),this->CountServs());
3738 if (ServerInstance->OperCount())
3739 user->WriteServ("252 %s %d :operator(s) online",user->nick,ServerInstance->OperCount());
3740 if (ServerInstance->UnregisteredUserCount())
3741 user->WriteServ("253 %s %d :unknown connections",user->nick,ServerInstance->UnregisteredUserCount());
3742 if (ServerInstance->ChannelCount())
3743 user->WriteServ("254 %s %d :channels formed",user->nick,ServerInstance->ChannelCount());
3744 user->WriteServ("254 %s :I have %d clients and %d servers",user->nick,ServerInstance->LocalUserCount(),this->CountLocalServs());
3745 user->WriteServ("265 %s :Current Local Users: %d Max: %d",user->nick,ServerInstance->LocalUserCount(),max_local);
3746 user->WriteServ("266 %s :Current Global Users: %d Max: %d",user->nick,n_users,max_global);
3750 // WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS.
3752 void ShowMap(TreeServer* Current, userrec* user, int depth, char matrix[128][80], float &totusers, float &totservers)
3756 for (int t = 0; t < depth; t++)
3758 matrix[line][t] = ' ';
3761 // For Aligning, we need to work out exactly how deep this thing is, and produce
3762 // a 'Spacer' String to compensate.
3765 memset(spacer,' ',40);
3766 if ((40 - Current->GetName().length() - depth) > 1) {
3767 spacer[40 - Current->GetName().length() - depth] = '\0';
3776 if (ServerInstance->clientlist.size() == 0) {
3777 // If there are no users, WHO THE HELL DID THE /MAP?!?!?!
3782 percent = ((float)Current->GetUserCount() / (float)ServerInstance->clientlist.size()) * 100;
3784 snprintf(text, 80, "%s %s%5d [%5.2f%%]", Current->GetName().c_str(), spacer, Current->GetUserCount(), percent);
3785 totusers += Current->GetUserCount();
3787 strlcpy(&matrix[line][depth],text,80);
3789 for (unsigned int q = 0; q < Current->ChildCount(); q++)
3791 if ((HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str())))
3795 ShowMap(Current->GetChild(q),user,(FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers);
3800 ShowMap(Current->GetChild(q),user,(FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers);
3806 int HandleMotd(const char** parameters, int pcnt, userrec* user)
3810 /* Remote MOTD, the server is within the 1st parameter */
3811 std::deque<std::string> params;
3812 params.push_back(parameters[0]);
3814 /* Send it out remotely, generate no reply yet */
3815 TreeServer* s = FindServerMask(parameters[0]);
3818 DoOneToOne(user->nick, "MOTD", params, s->GetName());
3822 user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]);
3829 int HandleAdmin(const char** parameters, int pcnt, userrec* user)
3833 /* Remote ADMIN, the server is within the 1st parameter */
3834 std::deque<std::string> params;
3835 params.push_back(parameters[0]);
3837 /* Send it out remotely, generate no reply yet */
3838 TreeServer* s = FindServerMask(parameters[0]);
3841 DoOneToOne(user->nick, "ADMIN", params, s->GetName());
3845 user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]);
3852 int HandleStats(const char** parameters, int pcnt, userrec* user)
3856 /* Remote STATS, the server is within the 2nd parameter */
3857 std::deque<std::string> params;
3858 params.push_back(parameters[0]);
3859 params.push_back(parameters[1]);
3860 /* Send it out remotely, generate no reply yet */
3861 TreeServer* s = FindServerMask(parameters[1]);
3864 params[1] = s->GetName();
3865 DoOneToOne(user->nick, "STATS", params, s->GetName());
3869 user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]);
3876 // Ok, prepare to be confused.
3877 // After much mulling over how to approach this, it struck me that
3878 // the 'usual' way of doing a /MAP isnt the best way. Instead of
3879 // keeping track of a ton of ascii characters, and line by line
3880 // under recursion working out where to place them using multiplications
3881 // and divisons, we instead render the map onto a backplane of characters
3882 // (a character matrix), then draw the branches as a series of "L" shapes
3883 // from the nodes. This is not only friendlier on CPU it uses less stack.
3885 void HandleMap(const char** parameters, int pcnt, userrec* user)
3887 // This array represents a virtual screen which we will
3888 // "scratch" draw to, as the console device of an irc
3889 // client does not provide for a proper terminal.
3891 float totservers = 0;
3892 char matrix[128][80];
3893 for (unsigned int t = 0; t < 128; t++)
3895 matrix[t][0] = '\0';
3898 // The only recursive bit is called here.
3899 ShowMap(TreeRoot,user,0,matrix,totusers,totservers);
3900 // Process each line one by one. The algorithm has a limit of
3901 // 128 servers (which is far more than a spanning tree should have
3902 // anyway, so we're ok). This limit can be raised simply by making
3903 // the character matrix deeper, 128 rows taking 10k of memory.
3904 for (int l = 1; l < line; l++)
3906 // scan across the line looking for the start of the
3907 // servername (the recursive part of the algorithm has placed
3908 // the servers at indented positions depending on what they
3910 int first_nonspace = 0;
3911 while (matrix[l][first_nonspace] == ' ')
3916 // Draw the `- (corner) section: this may be overwritten by
3917 // another L shape passing along the same vertical pane, becoming
3918 // a |- (branch) section instead.
3919 matrix[l][first_nonspace] = '-';
3920 matrix[l][first_nonspace-1] = '`';
3922 // Draw upwards until we hit the parent server, causing possibly
3923 // other corners (`-) to become branches (|-)
3924 while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`'))
3926 matrix[l2][first_nonspace-1] = '|';
3930 // dump the whole lot to the user. This is the easy bit, honest.
3931 for (int t = 0; t < line; t++)
3933 user->WriteServ("006 %s :%s",user->nick,&matrix[t][0]);
3935 float avg_users = totusers / totservers;
3936 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);
3937 user->WriteServ("007 %s :End of /MAP",user->nick);
3941 int HandleSquit(const char** parameters, int pcnt, userrec* user)
3943 TreeServer* s = FindServerMask(parameters[0]);
3948 user->WriteServ("NOTICE %s :*** SQUIT: Foolish mortal, you cannot make a server SQUIT itself! (%s matches local server name)",user->nick,parameters[0]);
3951 TreeSocket* sock = s->GetSocket();
3954 ServerInstance->Log(DEBUG,"Splitting server %s",s->GetName().c_str());
3955 ServerInstance->SNO->WriteToSnoMask('l',"SQUIT: Server \002%s\002 removed from network by %s",parameters[0],user->nick);
3956 sock->Squit(s,"Server quit by "+std::string(user->nick)+"!"+std::string(user->ident)+"@"+std::string(user->host));
3957 ServerInstance->SE->DelFd(sock);
3963 user->WriteServ("NOTICE %s :*** SQUIT: The server \002%s\002 is not directly connected.",user->nick,parameters[0]);
3968 user->WriteServ("NOTICE %s :*** SQUIT: The server \002%s\002 does not exist on the network.",user->nick,parameters[0]);
3973 int HandleTime(const char** parameters, int pcnt, userrec* user)
3975 if ((IS_LOCAL(user)) && (pcnt))
3977 TreeServer* found = FindServerMask(parameters[0]);
3980 // we dont' override for local server
3981 if (found == TreeRoot)
3984 std::deque<std::string> params;
3985 params.push_back(found->GetName());
3986 params.push_back(user->nick);
3987 DoOneToOne(ServerInstance->Config->ServerName,"TIME",params,found->GetName());
3991 user->WriteServ("402 %s %s :No such server",user->nick,parameters[0]);
3997 int HandleRemoteWhois(const char** parameters, int pcnt, userrec* user)
3999 if ((IS_LOCAL(user)) && (pcnt > 1))
4001 userrec* remote = ServerInstance->FindNick(parameters[1]);
4002 if ((remote) && (remote->GetFd() < 0))
4004 std::deque<std::string> params;
4005 params.push_back(parameters[1]);
4006 DoOneToOne(user->nick,"IDLE",params,remote->server);
4011 user->WriteServ("401 %s %s :No such nick/channel",user->nick, parameters[1]);
4012 user->WriteServ("318 %s %s :End of /WHOIS list.",user->nick, parameters[1]);
4019 void DoPingChecks(time_t curtime)
4021 for (unsigned int j = 0; j < TreeRoot->ChildCount(); j++)
4023 TreeServer* serv = TreeRoot->GetChild(j);
4024 TreeSocket* sock = serv->GetSocket();
4027 if (curtime >= serv->NextPingTime())
4029 if (serv->AnsweredLastPing())
4031 sock->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" PING "+serv->GetName());
4032 serv->SetNextPingTime(curtime + 60);
4036 // they didnt answer, boot them
4037 ServerInstance->SNO->WriteToSnoMask('l',"Server \002%s\002 pinged out",serv->GetName().c_str());
4038 sock->Squit(serv,"Ping timeout");
4039 ServerInstance->SE->DelFd(sock);
4049 void ConnectServer(Link* x)
4053 /* Do we already have an IP? If so, no need to resolve it. */
4054 if (insp_aton(x->IPAddr.c_str(), &binip) > 0)
4056 TreeSocket* newsocket = new TreeSocket(ServerInstance, x->IPAddr,x->Port,false,10,x->Name.c_str());
4057 if (newsocket->GetFd() > -1)
4059 /* Handled automatically on success */
4063 ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(),strerror(errno));
4065 this->DoFailOver(x);
4072 ServernameResolver* snr = new ServernameResolver(ServerInstance,x->IPAddr, *x);
4073 ServerInstance->AddResolver(snr);
4075 catch (ModuleException& e)
4077 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
4078 this->DoFailOver(x);
4083 void DoFailOver(Link* x)
4085 if (x->FailOver.length())
4087 if (x->FailOver == x->Name)
4089 ServerInstance->SNO->WriteToSnoMask('l',"FAILOVER: Some muppet configured the failover for server \002%s\002 to point at itself. Not following it!", x->Name.c_str());
4092 Link* TryThisOne = this->FindLink(x->FailOver.c_str());
4095 ServerInstance->SNO->WriteToSnoMask('l',"FAILOVER: Trying failover link for \002%s\002: \002%s\002...", x->Name.c_str(), TryThisOne->Name.c_str());
4096 ConnectServer(TryThisOne);
4100 ServerInstance->SNO->WriteToSnoMask('l',"FAILOVER: Invalid failover server specified for server \002%s\002, will not follow!", x->Name.c_str());
4105 Link* FindLink(const std::string& name)
4107 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
4109 if (ServerInstance->MatchText(x->Name.c_str(), name.c_str()))
4117 void AutoConnectServers(time_t curtime)
4119 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
4121 if ((x->AutoConnect) && (curtime >= x->NextConnectTime))
4123 ServerInstance->Log(DEBUG,"Auto-Connecting %s",x->Name.c_str());
4124 x->NextConnectTime = curtime + x->AutoConnect;
4125 TreeServer* CheckDupe = FindServer(x->Name.c_str());
4128 // an autoconnected server is not connected. Check if its time to connect it
4129 ServerInstance->SNO->WriteToSnoMask('l',"AUTOCONNECT: Auto-connecting server \002%s\002 (%lu seconds until next attempt)",x->Name.c_str(),x->AutoConnect);
4130 this->ConnectServer(&(*x));
4136 int HandleVersion(const char** parameters, int pcnt, userrec* user)
4138 // we've already checked if pcnt > 0, so this is safe
4139 TreeServer* found = FindServerMask(parameters[0]);
4142 std::string Version = found->GetVersion();
4143 user->WriteServ("351 %s :%s",user->nick,Version.c_str());
4144 if (found == TreeRoot)
4146 std::stringstream out(ServerInstance->Config->data005);
4147 std::string token = "";
4148 std::string line5 = "";
4149 int token_counter = 0;
4154 line5 = line5 + token + " ";
4157 if ((token_counter >= 13) || (out.eof() == true))
4159 user->WriteServ("005 %s %s:are supported by this server",user->nick,line5.c_str());
4168 user->WriteServ("402 %s %s :No such server",user->nick,parameters[0]);
4173 int HandleConnect(const char** parameters, int pcnt, userrec* user)
4175 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
4177 if (ServerInstance->MatchText(x->Name.c_str(),parameters[0]))
4179 TreeServer* CheckDupe = FindServer(x->Name.c_str());
4182 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);
4183 ConnectServer(&(*x));
4188 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());
4193 user->WriteServ("NOTICE %s :*** CONNECT: No server matching \002%s\002 could be found in the config file.",user->nick,parameters[0]);
4197 virtual int OnStats(char statschar, userrec* user, string_list &results)
4199 if (statschar == 'c')
4201 for (unsigned int i = 0; i < LinkBlocks.size(); i++)
4203 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');
4204 results.push_back(std::string(ServerInstance->Config->ServerName)+" 244 "+user->nick+" H * * "+LinkBlocks[i].Name.c_str());
4206 results.push_back(std::string(ServerInstance->Config->ServerName)+" 219 "+user->nick+" "+statschar+" :End of /STATS report");
4207 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);
4213 virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, bool validated)
4215 /* If the command doesnt appear to be valid, we dont want to mess with it. */
4219 if (command == "CONNECT")
4221 return this->HandleConnect(parameters,pcnt,user);
4223 else if (command == "STATS")
4225 return this->HandleStats(parameters,pcnt,user);
4227 else if (command == "MOTD")
4229 return this->HandleMotd(parameters,pcnt,user);
4231 else if (command == "ADMIN")
4233 return this->HandleAdmin(parameters,pcnt,user);
4235 else if (command == "SQUIT")
4237 return this->HandleSquit(parameters,pcnt,user);
4239 else if (command == "MAP")
4241 this->HandleMap(parameters,pcnt,user);
4244 else if ((command == "TIME") && (pcnt > 0))
4246 return this->HandleTime(parameters,pcnt,user);
4248 else if (command == "LUSERS")
4250 this->HandleLusers(parameters,pcnt,user);
4253 else if (command == "LINKS")
4255 this->HandleLinks(parameters,pcnt,user);
4258 else if (command == "WHOIS")
4263 return this->HandleRemoteWhois(parameters,pcnt,user);
4266 else if ((command == "VERSION") && (pcnt > 0))
4268 this->HandleVersion(parameters,pcnt,user);
4271 else if (ServerInstance->IsValidModuleCommand(command, pcnt, user))
4273 // this bit of code cleverly routes all module commands
4274 // to all remote severs *automatically* so that modules
4275 // can just handle commands locally, without having
4276 // to have any special provision in place for remote
4277 // commands and linking protocols.
4278 std::deque<std::string> params;
4280 for (int j = 0; j < pcnt; j++)
4282 if (strchr(parameters[j],' '))
4284 params.push_back(":" + std::string(parameters[j]));
4288 params.push_back(std::string(parameters[j]));
4291 ServerInstance->Log(DEBUG,"Globally route '%s'",command.c_str());
4292 DoOneToMany(user->nick,command,params);
4297 virtual void OnGetServerDescription(const std::string &servername,std::string &description)
4299 TreeServer* s = FindServer(servername);
4302 description = s->GetDesc();
4306 virtual void OnUserInvite(userrec* source,userrec* dest,chanrec* channel)
4308 if (IS_LOCAL(source))
4310 std::deque<std::string> params;
4311 params.push_back(dest->nick);
4312 params.push_back(channel->name);
4313 DoOneToMany(source->nick,"INVITE",params);
4317 virtual void OnPostLocalTopicChange(userrec* user, chanrec* chan, const std::string &topic)
4319 std::deque<std::string> params;
4320 params.push_back(chan->name);
4321 params.push_back(":"+topic);
4322 DoOneToMany(user->nick,"TOPIC",params);
4325 virtual void OnWallops(userrec* user, const std::string &text)
4329 std::deque<std::string> params;
4330 params.push_back(":"+text);
4331 DoOneToMany(user->nick,"WALLOPS",params);
4335 virtual void OnUserNotice(userrec* user, void* dest, int target_type, const std::string &text, char status)
4337 if (target_type == TYPE_USER)
4339 userrec* d = (userrec*)dest;
4340 if ((d->GetFd() < 0) && (IS_LOCAL(user)))
4342 std::deque<std::string> params;
4344 params.push_back(d->nick);
4345 params.push_back(":"+text);
4346 DoOneToOne(user->nick,"NOTICE",params,d->server);
4349 else if (target_type == TYPE_CHANNEL)
4353 chanrec *c = (chanrec*)dest;
4356 std::string cname = c->name;
4358 cname = status + cname;
4359 std::deque<TreeServer*> list;
4360 GetListOfServersForChannel(c,list);
4361 unsigned int ucount = list.size();
4362 for (unsigned int i = 0; i < ucount; i++)
4364 TreeSocket* Sock = list[i]->GetSocket();
4366 Sock->WriteLine(":"+std::string(user->nick)+" NOTICE "+cname+" :"+text);
4371 else if (target_type == TYPE_SERVER)
4375 char* target = (char*)dest;
4376 std::deque<std::string> par;
4377 par.push_back(target);
4378 par.push_back(":"+text);
4379 DoOneToMany(user->nick,"NOTICE",par);
4384 virtual void OnUserMessage(userrec* user, void* dest, int target_type, const std::string &text, char status)
4386 if (target_type == TYPE_USER)
4388 // route private messages which are targetted at clients only to the server
4389 // which needs to receive them
4390 userrec* d = (userrec*)dest;
4391 if ((d->GetFd() < 0) && (IS_LOCAL(user)))
4393 std::deque<std::string> params;
4395 params.push_back(d->nick);
4396 params.push_back(":"+text);
4397 DoOneToOne(user->nick,"PRIVMSG",params,d->server);
4400 else if (target_type == TYPE_CHANNEL)
4404 chanrec *c = (chanrec*)dest;
4407 std::string cname = c->name;
4409 cname = status + cname;
4410 std::deque<TreeServer*> list;
4411 GetListOfServersForChannel(c,list);
4412 unsigned int ucount = list.size();
4413 for (unsigned int i = 0; i < ucount; i++)
4415 TreeSocket* Sock = list[i]->GetSocket();
4417 Sock->WriteLine(":"+std::string(user->nick)+" PRIVMSG "+cname+" :"+text);
4422 else if (target_type == TYPE_SERVER)
4426 char* target = (char*)dest;
4427 std::deque<std::string> par;
4428 par.push_back(target);
4429 par.push_back(":"+text);
4430 DoOneToMany(user->nick,"PRIVMSG",par);
4435 virtual void OnBackgroundTimer(time_t curtime)
4437 AutoConnectServers(curtime);
4438 DoPingChecks(curtime);
4441 virtual void OnUserJoin(userrec* user, chanrec* channel)
4443 // Only do this for local users
4446 std::deque<std::string> params;
4448 params.push_back(channel->name);
4450 if (channel->GetUserCounter() > 1)
4452 // not the first in the channel
4453 DoOneToMany(user->nick,"JOIN",params);
4457 // first in the channel, set up their permissions
4458 // and the channel TS with FJOIN.
4460 snprintf(ts,24,"%lu",(unsigned long)channel->age);
4462 params.push_back(channel->name);
4463 params.push_back(ts);
4464 params.push_back("@,"+std::string(user->nick));
4465 DoOneToMany(ServerInstance->Config->ServerName,"FJOIN",params);
4470 virtual void OnChangeHost(userrec* user, const std::string &newhost)
4472 // only occurs for local clients
4473 if (user->registered != REG_ALL)
4475 std::deque<std::string> params;
4476 params.push_back(newhost);
4477 DoOneToMany(user->nick,"FHOST",params);
4480 virtual void OnChangeName(userrec* user, const std::string &gecos)
4482 // only occurs for local clients
4483 if (user->registered != REG_ALL)
4485 std::deque<std::string> params;
4486 params.push_back(gecos);
4487 DoOneToMany(user->nick,"FNAME",params);
4490 virtual void OnUserPart(userrec* user, chanrec* channel, const std::string &partmessage)
4494 std::deque<std::string> params;
4495 params.push_back(channel->name);
4496 if (partmessage != "")
4497 params.push_back(":"+partmessage);
4498 DoOneToMany(user->nick,"PART",params);
4502 virtual void OnUserConnect(userrec* user)
4504 char agestr[MAXBUF];
4507 std::deque<std::string> params;
4508 snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age);
4509 params.push_back(agestr);
4510 params.push_back(user->nick);
4511 params.push_back(user->host);
4512 params.push_back(user->dhost);
4513 params.push_back(user->ident);
4514 params.push_back("+"+std::string(user->FormatModes()));
4515 params.push_back(user->GetIPString());
4516 params.push_back(":"+std::string(user->fullname));
4517 DoOneToMany(ServerInstance->Config->ServerName,"NICK",params);
4519 // User is Local, change needs to be reflected!
4520 TreeServer* SourceServer = FindServer(user->server);
4523 SourceServer->AddUserCount();
4529 virtual void OnUserQuit(userrec* user, const std::string &reason)
4531 if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
4533 std::deque<std::string> params;
4534 params.push_back(":"+reason);
4535 DoOneToMany(user->nick,"QUIT",params);
4537 // Regardless, We need to modify the user Counts..
4538 TreeServer* SourceServer = FindServer(user->server);
4541 SourceServer->DelUserCount();
4546 virtual void OnUserPostNick(userrec* user, const std::string &oldnick)
4550 std::deque<std::string> params;
4551 params.push_back(user->nick);
4552 DoOneToMany(oldnick,"NICK",params);
4556 virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason)
4558 if ((source) && (IS_LOCAL(source)))
4560 std::deque<std::string> params;
4561 params.push_back(chan->name);
4562 params.push_back(user->nick);
4563 params.push_back(":"+reason);
4564 DoOneToMany(source->nick,"KICK",params);
4568 std::deque<std::string> params;
4569 params.push_back(chan->name);
4570 params.push_back(user->nick);
4571 params.push_back(":"+reason);
4572 DoOneToMany(ServerInstance->Config->ServerName,"KICK",params);
4576 virtual void OnRemoteKill(userrec* source, userrec* dest, const std::string &reason)
4578 std::deque<std::string> params;
4579 params.push_back(dest->nick);
4580 params.push_back(":"+reason);
4581 DoOneToMany(source->nick,"KILL",params);
4584 virtual void OnRehash(const std::string ¶meter)
4586 if (parameter != "")
4588 std::deque<std::string> params;
4589 params.push_back(parameter);
4590 DoOneToMany(ServerInstance->Config->ServerName,"REHASH",params);
4592 if (ServerInstance->MatchText(ServerInstance->Config->ServerName,parameter))
4594 ServerInstance->WriteOpers("*** Remote rehash initiated from server \002%s\002",ServerInstance->Config->ServerName);
4595 ServerInstance->RehashServer();
4598 ReadConfiguration(false);
4601 // note: the protocol does not allow direct umode +o except
4602 // via NICK with 8 params. sending OPERTYPE infers +o modechange
4604 virtual void OnOper(userrec* user, const std::string &opertype)
4608 std::deque<std::string> params;
4609 params.push_back(opertype);
4610 DoOneToMany(user->nick,"OPERTYPE",params);
4614 void OnLine(userrec* source, const std::string &host, bool adding, char linetype, long duration, const std::string &reason)
4616 if (IS_LOCAL(source))
4619 snprintf(type,8,"%cLINE",linetype);
4620 std::string stype = type;
4623 char sduration[MAXBUF];
4624 snprintf(sduration,MAXBUF,"%ld",duration);
4625 std::deque<std::string> params;
4626 params.push_back(host);
4627 params.push_back(sduration);
4628 params.push_back(":"+reason);
4629 DoOneToMany(source->nick,stype,params);
4633 std::deque<std::string> params;
4634 params.push_back(host);
4635 DoOneToMany(source->nick,stype,params);
4640 virtual void OnAddGLine(long duration, userrec* source, const std::string &reason, const std::string &hostmask)
4642 OnLine(source,hostmask,true,'G',duration,reason);
4645 virtual void OnAddZLine(long duration, userrec* source, const std::string &reason, const std::string &ipmask)
4647 OnLine(source,ipmask,true,'Z',duration,reason);
4650 virtual void OnAddQLine(long duration, userrec* source, const std::string &reason, const std::string &nickmask)
4652 OnLine(source,nickmask,true,'Q',duration,reason);
4655 virtual void OnAddELine(long duration, userrec* source, const std::string &reason, const std::string &hostmask)
4657 OnLine(source,hostmask,true,'E',duration,reason);
4660 virtual void OnDelGLine(userrec* source, const std::string &hostmask)
4662 OnLine(source,hostmask,false,'G',0,"");
4665 virtual void OnDelZLine(userrec* source, const std::string &ipmask)
4667 OnLine(source,ipmask,false,'Z',0,"");
4670 virtual void OnDelQLine(userrec* source, const std::string &nickmask)
4672 OnLine(source,nickmask,false,'Q',0,"");
4675 virtual void OnDelELine(userrec* source, const std::string &hostmask)
4677 OnLine(source,hostmask,false,'E',0,"");
4680 virtual void OnMode(userrec* user, void* dest, int target_type, const std::string &text)
4682 if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
4684 if (target_type == TYPE_USER)
4686 userrec* u = (userrec*)dest;
4687 std::deque<std::string> params;
4688 params.push_back(u->nick);
4689 params.push_back(text);
4690 DoOneToMany(user->nick,"MODE",params);
4694 chanrec* c = (chanrec*)dest;
4695 std::deque<std::string> params;
4696 params.push_back(c->name);
4697 params.push_back(text);
4698 DoOneToMany(user->nick,"MODE",params);
4703 virtual void OnSetAway(userrec* user)
4707 std::deque<std::string> params;
4708 params.push_back(":"+std::string(user->awaymsg));
4709 DoOneToMany(user->nick,"AWAY",params);
4713 virtual void OnCancelAway(userrec* user)
4717 std::deque<std::string> params;
4719 DoOneToMany(user->nick,"AWAY",params);
4723 virtual void ProtoSendMode(void* opaque, int target_type, void* target, const std::string &modeline)
4725 TreeSocket* s = (TreeSocket*)opaque;
4728 if (target_type == TYPE_USER)
4730 userrec* u = (userrec*)target;
4731 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" FMODE "+u->nick+" "+ConvToStr(u->age)+" "+modeline);
4735 chanrec* c = (chanrec*)target;
4736 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age)+" "+modeline);
4741 virtual void ProtoSendMetaData(void* opaque, int target_type, void* target, const std::string &extname, const std::string &extdata)
4743 TreeSocket* s = (TreeSocket*)opaque;
4746 if (target_type == TYPE_USER)
4748 userrec* u = (userrec*)target;
4749 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA "+u->nick+" "+extname+" :"+extdata);
4751 else if (target_type == TYPE_OTHER)
4753 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA * "+extname+" :"+extdata);
4755 else if (target_type == TYPE_CHANNEL)
4757 chanrec* c = (chanrec*)target;
4758 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA "+c->name+" "+extname+" :"+extdata);
4763 virtual void OnEvent(Event* event)
4765 if (event->GetEventID() == "send_metadata")
4767 std::deque<std::string>* params = (std::deque<std::string>*)event->GetData();
4768 if (params->size() < 3)
4770 (*params)[2] = ":" + (*params)[2];
4771 DoOneToMany(ServerInstance->Config->ServerName,"METADATA",*params);
4773 else if (event->GetEventID() == "send_mode")
4775 std::deque<std::string>* params = (std::deque<std::string>*)event->GetData();
4776 if (params->size() < 2)
4778 // Insert the TS value of the object, either userrec or chanrec
4780 userrec* a = ServerInstance->FindNick((*params)[0]);
4787 chanrec* a = ServerInstance->FindChan((*params)[0]);
4793 params->insert(params->begin() + 1,ConvToStr(ourTS));
4794 DoOneToMany(ServerInstance->Config->ServerName,"FMODE",*params);
4798 virtual ~ModuleSpanningTree()
4802 virtual Version GetVersion()
4804 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
4807 void Implements(char* List)
4809 List[I_OnPreCommand] = List[I_OnGetServerDescription] = List[I_OnUserInvite] = List[I_OnPostLocalTopicChange] = 1;
4810 List[I_OnWallops] = List[I_OnUserNotice] = List[I_OnUserMessage] = List[I_OnBackgroundTimer] = 1;
4811 List[I_OnUserJoin] = List[I_OnChangeHost] = List[I_OnChangeName] = List[I_OnUserPart] = List[I_OnUserConnect] = 1;
4812 List[I_OnUserQuit] = List[I_OnUserPostNick] = List[I_OnUserKick] = List[I_OnRemoteKill] = List[I_OnRehash] = 1;
4813 List[I_OnOper] = List[I_OnAddGLine] = List[I_OnAddZLine] = List[I_OnAddQLine] = List[I_OnAddELine] = 1;
4814 List[I_OnDelGLine] = List[I_OnDelZLine] = List[I_OnDelQLine] = List[I_OnDelELine] = List[I_ProtoSendMode] = List[I_OnMode] = 1;
4815 List[I_OnStats] = List[I_ProtoSendMetaData] = List[I_OnEvent] = List[I_OnSetAway] = List[I_OnCancelAway] = 1;
4818 /* It is IMPORTANT that m_spanningtree is the last module in the chain
4819 * so that any activity it sees is FINAL, e.g. we arent going to send out
4820 * a NICK message before m_cloaking has finished putting the +x on the user,
4822 * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
4823 * the module call queue.
4825 Priority Prioritize()
4827 return PRIORITY_LAST;
4831 void DoFailOver(Link* x)
4833 TreeProtocolModule->DoFailOver(x);
4836 Link* FindLink(const std::string& name)
4838 return TreeProtocolModule->FindLink(name);
4841 class ModuleSpanningTreeFactory : public ModuleFactory
4844 ModuleSpanningTreeFactory()
4848 ~ModuleSpanningTreeFactory()
4852 virtual Module * CreateModule(InspIRCd* Me)
4854 TreeProtocolModule = new ModuleSpanningTree(Me);
4855 return TreeProtocolModule;
4861 extern "C" void * init_module( void )
4863 return new ModuleSpanningTreeFactory;