1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
7 * <brain@chatspike.net>
8 * <Craig@chatspike.net>
10 * Written by Craig Edwards, Craig McLure, and others.
11 * This program is free but copyrighted software; see
12 * the file COPYING for details.
14 * ---------------------------------------------------
17 /* $ModDesc: Povides a spanning tree server link protocol */
21 #include "configreader.h"
25 #include "commands/cmd_whois.h"
26 #include "commands/cmd_stats.h"
31 #include "cull_list.h"
34 #define nspace __gnu_cxx
37 /** If you make a change which breaks the protocol, increment this.
38 * If you completely change the protocol, completely change the number.
40 const long ProtocolVersion = 1100;
43 * The server list in InspIRCd is maintained as two structures
44 * which hold the data in different ways. Most of the time, we
45 * want to very quicky obtain three pieces of information:
47 * (1) The information on a server
48 * (2) The information on the server we must send data through
49 * to actually REACH the server we're after
50 * (3) Potentially, the child/parent objects of this server
52 * The InspIRCd spanning protocol provides easy access to these
53 * by storing the data firstly in a recursive structure, where
54 * each item references its parent item, and a dynamic list
55 * of child items, and another structure which stores the items
56 * hashed, linearly. This means that if we want to find a server
57 * by name quickly, we can look it up in the hash, avoiding
58 * any O(n) lookups. If however, during a split or sync, we want
59 * to apply an operation to a server, and any of its child objects
60 * we can resort to recursion to walk the tree structure.
63 using irc::sockets::MatchCIDR;
65 class ModuleSpanningTree;
66 static ModuleSpanningTree* TreeProtocolModule;
67 static InspIRCd* ServerInstance;
69 /** Any socket can have one of five states at any one time.
70 * The LISTENER state indicates a socket which is listening
71 * for connections. It cannot receive data itself, only incoming
73 * The CONNECTING state indicates an outbound socket which is
74 * waiting to be writeable.
75 * The WAIT_AUTH_1 state indicates the socket is outbound and
76 * has successfully connected, but has not yet sent and received
78 * The WAIT_AUTH_2 state indicates that the socket is inbound
79 * (allocated by a LISTENER) but has not yet sent and received
81 * The CONNECTED state represents a fully authorized, fully
84 enum ServerState { LISTENER, CONNECTING, WAIT_AUTH_1, WAIT_AUTH_2, CONNECTED };
86 /* Foward declarations */
90 /* This variable represents the root of the server tree
91 * (for all intents and purposes, it's us)
95 /* This hash_map holds the hash equivalent of the server
96 * tree, used for rapid linear lookups.
98 typedef nspace::hash_map<std::string, TreeServer*, nspace::hash<string>, irc::StrHashComp> server_hash;
99 server_hash serverlist;
101 typedef nspace::hash_map<std::string, userrec*> uid_hash;
102 typedef nspace::hash_map<std::string, char*> sid_hash;
104 /* More forward declarations */
105 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string target);
106 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string omit);
107 bool DoOneToAllButSender(const char* prefix, const char* command, std::deque<std::string> ¶ms, std::string omit);
108 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> ¶ms);
109 bool DoOneToMany(const char* prefix, const char* command, std::deque<std::string> ¶ms);
110 bool DoOneToAllButSenderRaw(std::string data, std::string omit, std::string prefix, irc::string command, std::deque<std::string> ¶ms);
111 void ReadConfiguration(bool rebind);
113 /* Flatten links and /MAP for non-opers */
115 /* Hide U-Lined servers in /MAP and /LINKS */
118 std::vector<std::string> ValidIPs;
120 class UserManager : public classbase
131 std::string UserToUID(userrec* user)
136 std::string UIDToUser(const std::string &UID)
141 std::string CreateAndAdd(userrec* user)
146 std::string CreateAndAdd(const std::string &servername)
151 std::string ServerToSID(const std::string &servername)
156 std::string SIDToServer(const std::string &SID)
161 userrec* FindByID(const std::string &UID)
168 /** Each server in the tree is represented by one class of
169 * type TreeServer. A locally connected TreeServer can
170 * have a class of type TreeSocket associated with it, for
171 * remote servers, the TreeSocket entry will be NULL.
172 * Each server also maintains a pointer to its parent
173 * (NULL if this server is ours, at the top of the tree)
174 * and a pointer to its "Route" (see the comments in the
175 * constructors below), and also a dynamic list of pointers
176 * to its children which can be iterated recursively
177 * if required. Creating or deleting objects of type
178 i* TreeServer automatically maintains the hash_map of
179 * TreeServer items, deleting and inserting them as they
180 * are created and destroyed.
182 class TreeServer : public classbase
184 InspIRCd* ServerInstance; /* Creator */
185 TreeServer* Parent; /* Parent entry */
186 TreeServer* Route; /* Route entry */
187 std::vector<TreeServer*> Children; /* List of child objects */
188 irc::string ServerName; /* Server's name */
189 std::string ServerDesc; /* Server's description */
190 std::string VersionString; /* Version string or empty string */
191 int UserCount; /* Not used in this version */
192 int OperCount; /* Not used in this version */
193 TreeSocket* Socket; /* For directly connected servers this points at the socket object */
194 time_t NextPing; /* After this time, the server should be PINGed*/
195 bool LastPingWasGood; /* True if the server responded to the last PING with a PONG */
199 /** We don't use this constructor. Its a dummy, and won't cause any insertion
200 * of the TreeServer into the hash_map. See below for the two we DO use.
202 TreeServer(InspIRCd* Instance) : ServerInstance(Instance)
208 UserCount = OperCount = 0;
209 VersionString = ServerInstance->GetVersionString();
212 /** We use this constructor only to create the 'root' item, TreeRoot, which
213 * represents our own server. Therefore, it has no route, no parent, and
214 * no socket associated with it. Its version string is our own local version.
216 TreeServer(InspIRCd* Instance, std::string Name, std::string Desc) : ServerInstance(Instance), ServerName(Name.c_str()), ServerDesc(Desc)
220 UserCount = OperCount = 0;
221 VersionString = ServerInstance->GetVersionString();
223 Socket = NULL; /* Fix by brain */
227 /** When we create a new server, we call this constructor to initialize it.
228 * This constructor initializes the server's Route and Parent, and sets up
229 * its ping counters so that it will be pinged one minute from now.
231 TreeServer(InspIRCd* Instance, std::string Name, std::string Desc, TreeServer* Above, TreeSocket* Sock)
232 : ServerInstance(Instance), Parent(Above), ServerName(Name.c_str()), ServerDesc(Desc), Socket(Sock)
235 UserCount = OperCount = 0;
236 this->SetNextPingTime(time(NULL) + 60);
239 /* find the 'route' for this server (e.g. the one directly connected
240 * to the local server, which we can use to reach it)
242 * In the following example, consider we have just added a TreeServer
243 * class for server G on our network, of which we are server A.
244 * To route traffic to G (marked with a *) we must send the data to
245 * B (marked with a +) so this algorithm initializes the 'Route'
246 * value to point at whichever server traffic must be routed through
247 * to get here. If we were to try this algorithm with server B,
248 * the Route pointer would point at its own object ('this').
258 * We only run this algorithm when a server is created, as
259 * the routes remain constant while ever the server exists, and
260 * do not need to be re-calculated.
264 if (Route == TreeRoot)
270 while (this->Route->GetParent() != TreeRoot)
272 this->Route = Route->GetParent();
276 /* Because recursive code is slow and takes a lot of resources,
277 * we store two representations of the server tree. The first
278 * is a recursive structure where each server references its
279 * children and its parent, which is used for netbursts and
280 * netsplits to dump the whole dataset to the other server,
281 * and the second is used for very fast lookups when routing
282 * messages and is instead a hash_map, where each item can
283 * be referenced by its server name. The AddHashEntry()
284 * call below automatically inserts each TreeServer class
285 * into the hash_map as it is created. There is a similar
286 * maintainance call in the destructor to tidy up deleted
290 this->AddHashEntry();
293 int QuitUsers(const std::string &reason)
295 ServerInstance->Log(DEBUG,"Removing all users from server %s",this->ServerName.c_str());
296 const char* reason_s = reason.c_str();
297 std::vector<userrec*> time_to_die;
298 for (user_hash::iterator n = ServerInstance->clientlist.begin(); n != ServerInstance->clientlist.end(); n++)
300 if (!strcmp(n->second->server, this->ServerName.c_str()))
302 time_to_die.push_back(n->second);
305 for (std::vector<userrec*>::iterator n = time_to_die.begin(); n != time_to_die.end(); n++)
307 userrec* a = (userrec*)*n;
308 ServerInstance->Log(DEBUG,"Kill %s fd=%d",a->nick,a->GetFd());
310 userrec::QuitUser(ServerInstance,a,reason_s);
312 return time_to_die.size();
315 /** This method is used to add the structure to the
316 * hash_map for linear searches. It is only called
317 * by the constructors.
321 server_hash::iterator iter;
322 iter = serverlist.find(this->ServerName.c_str());
323 if (iter == serverlist.end())
324 serverlist[this->ServerName.c_str()] = this;
327 /** This method removes the reference to this object
328 * from the hash_map which is used for linear searches.
329 * It is only called by the default destructor.
333 server_hash::iterator iter;
334 iter = serverlist.find(this->ServerName.c_str());
335 if (iter != serverlist.end())
336 serverlist.erase(iter);
339 /** These accessors etc should be pretty self-
342 TreeServer* GetRoute()
347 std::string GetName()
349 return ServerName.c_str();
352 std::string GetDesc()
357 std::string GetVersion()
359 return VersionString;
362 void SetNextPingTime(time_t t)
365 LastPingWasGood = false;
368 time_t NextPingTime()
373 bool AnsweredLastPing()
375 return LastPingWasGood;
380 LastPingWasGood = true;
403 TreeSocket* GetSocket()
408 TreeServer* GetParent()
413 void SetVersion(std::string Version)
415 VersionString = Version;
418 unsigned int ChildCount()
420 return Children.size();
423 TreeServer* GetChild(unsigned int n)
425 if (n < Children.size())
427 /* Make sure they cant request
428 * an out-of-range object. After
429 * all we know what these programmer
430 * types are like *grin*.
440 void AddChild(TreeServer* Child)
442 Children.push_back(Child);
445 bool DelChild(TreeServer* Child)
447 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
458 /** Removes child nodes of this node, and of that node, etc etc.
459 * This is used during netsplits to automatically tidy up the
460 * server tree. It is slow, we don't use it for much else.
464 bool stillchildren = true;
465 while (stillchildren)
467 stillchildren = false;
468 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
470 TreeServer* s = (TreeServer*)*a;
474 stillchildren = true;
483 /* We'd better tidy up after ourselves, eh? */
484 this->DelHashEntry();
488 /** The Link class might as well be a struct,
489 * but this is C++ and we don't believe in structs (!).
490 * It holds the entire information of one <link>
491 * tag from the main config file. We maintain a list
492 * of them, and populate the list on rehash/load.
494 class Link : public classbase
500 std::string SendPass;
501 std::string RecvPass;
502 unsigned long AutoConnect;
503 time_t NextConnectTime;
504 std::string EncryptionKey;
505 bool HiddenFromStats;
506 irc::string FailOver;
509 void DoFailOver(Link* x);
510 Link* FindLink(const std::string& name);
512 /* The usual stuff for inspircd modules,
513 * plus the vector of Link classes which we
514 * use to store the <link> tags from the config
518 std::vector<Link> LinkBlocks;
520 /** Yay for fast searches!
521 * This is hundreds of times faster than recursion
522 * or even scanning a linked list, especially when
523 * there are more than a few servers to deal with.
526 TreeServer* FindServer(std::string ServerName)
528 server_hash::iterator iter;
529 iter = serverlist.find(ServerName.c_str());
530 if (iter != serverlist.end())
540 /** Returns the locally connected server we must route a
541 * message through to reach server 'ServerName'. This
542 * only applies to one-to-one and not one-to-many routing.
543 * See the comments for the constructor of TreeServer
546 TreeServer* BestRouteTo(std::string ServerName)
548 if (ServerName.c_str() == TreeRoot->GetName())
550 TreeServer* Found = FindServer(ServerName);
553 return Found->GetRoute();
561 /** Find the first server matching a given glob mask.
562 * Theres no find-using-glob method of hash_map [awwww :-(]
563 * so instead, we iterate over the list using an iterator
564 * and match each one until we get a hit. Yes its slow,
567 TreeServer* FindServerMask(std::string ServerName)
569 for (server_hash::iterator i = serverlist.begin(); i != serverlist.end(); i++)
571 if (match(i->first.c_str(),ServerName.c_str()))
577 /* A convenient wrapper that returns true if a server exists */
578 bool IsServer(std::string ServerName)
580 return (FindServer(ServerName) != NULL);
584 class cmd_rconnect : public command_t
588 cmd_rconnect (InspIRCd* Instance, Module* Callback) : command_t(Instance, "RCONNECT", 'o', 2), Creator(Callback)
590 this->source = "m_spanningtree.so";
591 syntax = "<remote-server-mask> <servermask>";
594 CmdResult Handle (const char** parameters, int pcnt, userrec *user)
596 user->WriteServ("NOTICE %s :*** RCONNECT: Sending remote connect to \002%s\002 to connect server \002%s\002.",user->nick,parameters[0],parameters[1]);
597 /* Is this aimed at our server? */
598 if (ServerInstance->MatchText(ServerInstance->Config->ServerName,parameters[0]))
600 /* Yes, initiate the given connect */
601 ServerInstance->SNO->WriteToSnoMask('l',"Remote CONNECT from %s matching \002%s\002, connecting server \002%s\002",user->nick,parameters[0],parameters[1]);
603 para[0] = parameters[1];
604 std::string original_command = std::string("CONNECT ") + parameters[1];
605 Creator->OnPreCommand("CONNECT", para, 1, user, true, original_command);
616 /** Every SERVER connection inbound or outbound is represented by
617 * an object of type TreeSocket.
618 * TreeSockets, being inherited from InspSocket, can be tied into
619 * the core socket engine, and we cn therefore receive activity events
620 * for them, just like activex objects on speed. (yes really, that
621 * is a technical term!) Each of these which relates to a locally
622 * connected server is assocated with it, by hooking it onto a
623 * TreeSocket class using its constructor. In this way, we can
624 * maintain a list of servers, some of which are directly connected,
625 * some of which are not.
627 class TreeSocket : public InspSocket
630 std::string in_buffer;
631 ServerState LinkState;
632 std::string InboundServerName;
633 std::string InboundDescription;
635 int num_lost_servers;
637 bool LastPingWasGood;
641 unsigned int keylength;
642 std::string ModuleList;
643 std::map<std::string,std::string> CapKeys;
647 /** Because most of the I/O gubbins are encapsulated within
648 * InspSocket, we just call the superclass constructor for
649 * most of the action, and append a few of our own values
652 TreeSocket(InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime)
653 : InspSocket(SI, host, port, listening, maxtime)
656 this->LinkState = LISTENER;
658 this->ctx_out = NULL;
661 TreeSocket(InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime, std::string ServerName)
662 : InspSocket(SI, host, port, listening, maxtime)
665 this->LinkState = CONNECTING;
667 this->ctx_out = NULL;
670 /** When a listening socket gives us a new file descriptor,
671 * we must associate it with a socket without creating a new
672 * connection. This constructor is used for this purpose.
674 TreeSocket(InspIRCd* SI, int newfd, char* ip)
675 : InspSocket(SI, newfd, ip)
677 this->LinkState = WAIT_AUTH_1;
679 this->ctx_out = NULL;
680 this->SendCapabilities();
691 void InitAES(std::string key,std::string SName)
698 Instance->Log(DEBUG,"Initialized AES key %s",key.c_str());
699 // key must be 16, 24, 32 etc bytes (multiple of 8)
700 keylength = key.length();
701 if (!(keylength == 16 || keylength == 24 || keylength == 32))
703 this->Instance->SNO->WriteToSnoMask('l',"\2ERROR\2: Key length for encryptionkey is not 16, 24 or 32 bytes in length!");
704 Instance->Log(DEBUG,"Key length not 16, 24 or 32 characters!");
708 this->Instance->SNO->WriteToSnoMask('l',"\2AES\2: Initialized %d bit encryption to server %s",keylength*8,SName.c_str());
709 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\
710 \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);
711 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\
712 \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);
716 /** When an outbound connection finishes connecting, we receive
717 * this event, and must send our SERVER string to the other
718 * side. If the other side is happy, as outlined in the server
719 * to server docs on the inspircd.org site, the other side
720 * will then send back its own server string.
722 virtual bool OnConnected()
724 if (this->LinkState == CONNECTING)
726 /* we do not need to change state here. */
727 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
729 if (x->Name == this->myhost)
731 this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] established.");
732 this->SendCapabilities();
733 if (x->EncryptionKey != "")
735 if (!(x->EncryptionKey.length() == 16 || x->EncryptionKey.length() == 24 || x->EncryptionKey.length() == 32))
737 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.");
741 this->WriteLine(std::string("AES ")+this->Instance->Config->ServerName);
742 this->InitAES(x->EncryptionKey,x->Name.c_str());
745 /* found who we're supposed to be connecting to, send the neccessary gubbins. */
746 this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc);
751 /* There is a (remote) chance that between the /CONNECT and the connection
752 * being accepted, some muppet has removed the <link> block and rehashed.
753 * If that happens the connection hangs here until it's closed. Unlikely
754 * and rather harmless.
756 this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2 lost link tag(!)");
760 virtual void OnError(InspSocketError e)
762 /* We don't handle this method, because all our
763 * dirty work is done in OnClose() (see below)
764 * which is still called on error conditions too.
766 if (e == I_ERR_CONNECT)
768 this->Instance->SNO->WriteToSnoMask('l',"Connection failed: Connection to \002"+myhost+"\002 refused");
769 Link* MyLink = FindLink(myhost);
775 virtual int OnDisconnect()
777 /* For the same reason as above, we don't
778 * handle OnDisconnect()
783 /** Recursively send the server tree with distances as hops.
784 * This is used during network burst to inform the other server
785 * (and any of ITS servers too) of what servers we know about.
786 * If at any point any of these servers already exist on the other
787 * end, our connection may be terminated. The hopcounts given
788 * by this function are relative, this doesn't matter so long as
789 * they are all >1, as all the remote servers re-calculate them
790 * to be relative too, with themselves as hop 0.
792 void SendServers(TreeServer* Current, TreeServer* s, int hops)
795 for (unsigned int q = 0; q < Current->ChildCount(); q++)
797 TreeServer* recursive_server = Current->GetChild(q);
798 if (recursive_server != s)
800 snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str());
801 this->WriteLine(command);
802 this->WriteLine(":"+recursive_server->GetName()+" VERSION :"+recursive_server->GetVersion());
803 /* down to next level */
804 this->SendServers(recursive_server, s, hops+1);
809 std::string MyCapabilities()
811 std::vector<std::string> modlist;
812 std::string capabilities = "";
814 for (int i = 0; i <= this->Instance->GetModuleCount(); i++)
816 if (this->Instance->modules[i]->GetVersion().Flags & VF_COMMON)
817 modlist.push_back(this->Instance->Config->module_names[i]);
819 sort(modlist.begin(),modlist.end());
820 for (unsigned int i = 0; i < modlist.size(); i++)
823 capabilities = capabilities + ",";
824 capabilities = capabilities + modlist[i];
829 void SendCapabilities()
831 irc::commasepstream modulelist(MyCapabilities());
833 this->WriteLine("CAPAB START");
835 /* Send module names, split at 509 length */
836 std::string item = "*";
837 std::string line = "CAPAB MODULES ";
838 while ((item = modulelist.GetToken()) != "")
840 if (line.length() + item.length() + 1 > 509)
842 this->WriteLine(line);
843 line = "CAPAB MODULES ";
846 if (line != "CAPAB MODULES ")
851 if (line != "CAPAB MODULES ")
852 this->WriteLine(line);
859 #ifdef SUPPORT_IP6LINKS
862 this->WriteLine("CAPAB CAPABILITIES :NICKMAX="+ConvToStr(NICKMAX)+" HALFOP="+ConvToStr(this->Instance->Config->AllowHalfop)+" CHANMAX="+ConvToStr(CHANMAX)+" MAXMODES="+ConvToStr(MAXMODES)+" IDENTMAX="+ConvToStr(IDENTMAX)+" MAXQUIT="+ConvToStr(MAXQUIT)+" MAXTOPIC="+ConvToStr(MAXTOPIC)+" MAXKICK="+ConvToStr(MAXKICK)+" MAXGECOS="+ConvToStr(MAXGECOS)+" MAXAWAY="+ConvToStr(MAXAWAY)+" IP6NATIVE="+ConvToStr(ip6)+" IP6SUPPORT="+ConvToStr(ip6support)+" PROTOCOL="+ConvToStr(ProtocolVersion));
864 this->WriteLine("CAPAB END");
867 /* Check a comma seperated list for an item */
868 bool HasItem(const std::string &list, const std::string &item)
870 irc::commasepstream seplist(list);
872 std::string item2 = "*";
873 while ((item2 = seplist.GetToken()) != "")
882 /* Isolate and return the elements that are different between two comma seperated lists */
883 std::string ListDifference(const std::string &one, const std::string &two)
885 irc::commasepstream list_one(one);
886 std::string item = "*";
887 std::string result = "";
888 while ((item = list_one.GetToken()) != "")
890 if (!HasItem(two, item))
899 bool Capab(std::deque<std::string> params)
901 if (params.size() < 1)
903 this->WriteLine("ERROR :Invalid number of parameters for CAPAB - Mismatched version");
907 if (params[0] == "START")
909 this->ModuleList = "";
910 this->CapKeys.clear();
912 else if (params[0] == "END")
914 std::string reason = "";
916 #ifdef SUPPORT_IP6LINKS
919 /* Compare ModuleList and check CapKeys...
920 * Maybe this could be tidier? -- Brain
922 if ((this->ModuleList != this->MyCapabilities()) && (this->ModuleList.length()))
924 std::string diff = ListDifference(this->ModuleList, this->MyCapabilities());
927 diff = "your server:" + ListDifference(this->MyCapabilities(), this->ModuleList);
931 diff = "this server:" + diff;
933 if (diff.length() == 12)
934 reason = "Module list in CAPAB is not alphabetically ordered, cannot compare lists.";
936 reason = "Modules loaded on these servers are not correctly matched, these modules are not loaded on " + diff;
939 if (((this->CapKeys.find("IP6SUPPORT") == this->CapKeys.end()) && (ip6support)) || ((this->CapKeys.find("IP6SUPPORT") != this->CapKeys.end()) && (this->CapKeys.find("IP6SUPPORT")->second != ConvToStr(ip6support))))
940 reason = "We don't both support linking to IPV6 servers";
942 if (((this->CapKeys.find("IP6NATIVE") != this->CapKeys.end()) && (this->CapKeys.find("IP6NATIVE")->second == "1")) && (!ip6support))
943 reason = "The remote server is IPV6 native, and we don't support linking to IPV6 servers";
945 if (((this->CapKeys.find("NICKMAX") == this->CapKeys.end()) || ((this->CapKeys.find("NICKMAX") != this->CapKeys.end()) && (this->CapKeys.find("NICKMAX")->second != ConvToStr(NICKMAX)))))
946 reason = "Maximum nickname lengths differ or remote nickname length not specified";
948 if (((this->CapKeys.find("PROTOCOL") == this->CapKeys.end()) || ((this->CapKeys.find("PROTOCOL") != this->CapKeys.end()) && (this->CapKeys.find("PROTOCOL")->second != ConvToStr(ProtocolVersion)))))
950 if (this->CapKeys.find("PROTOCOL") != this->CapKeys.end())
952 reason = "Mismatched protocol versions "+this->CapKeys.find("PROTOCOL")->second+" and "+ConvToStr(ProtocolVersion);
956 reason = "Protocol version not specified";
960 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))))
961 reason = "We don't both have halfop support enabled/disabled identically";
963 if (((this->CapKeys.find("IDENTMAX") == this->CapKeys.end()) || ((this->CapKeys.find("IDENTMAX") != this->CapKeys.end()) && (this->CapKeys.find("IDENTMAX")->second != ConvToStr(IDENTMAX)))))
964 reason = "Maximum ident lengths differ or remote ident length not specified";
966 if (((this->CapKeys.find("CHANMAX") == this->CapKeys.end()) || ((this->CapKeys.find("CHANMAX") != this->CapKeys.end()) && (this->CapKeys.find("CHANMAX")->second != ConvToStr(CHANMAX)))))
967 reason = "Maximum channel lengths differ or remote channel length not specified";
969 if (((this->CapKeys.find("MAXMODES") == this->CapKeys.end()) || ((this->CapKeys.find("MAXMODES") != this->CapKeys.end()) && (this->CapKeys.find("MAXMODES")->second != ConvToStr(MAXMODES)))))
970 reason = "Maximum modes per line differ or remote modes per line not specified";
972 if (((this->CapKeys.find("MAXQUIT") == this->CapKeys.end()) || ((this->CapKeys.find("MAXQUIT") != this->CapKeys.end()) && (this->CapKeys.find("MAXQUIT")->second != ConvToStr(MAXQUIT)))))
973 reason = "Maximum quit lengths differ or remote quit length not specified";
975 if (((this->CapKeys.find("MAXTOPIC") == this->CapKeys.end()) || ((this->CapKeys.find("MAXTOPIC") != this->CapKeys.end()) && (this->CapKeys.find("MAXTOPIC")->second != ConvToStr(MAXTOPIC)))))
976 reason = "Maximum topic lengths differ or remote topic length not specified";
978 if (((this->CapKeys.find("MAXKICK") == this->CapKeys.end()) || ((this->CapKeys.find("MAXKICK") != this->CapKeys.end()) && (this->CapKeys.find("MAXKICK")->second != ConvToStr(MAXKICK)))))
979 reason = "Maximum kick lengths differ or remote kick length not specified";
981 if (((this->CapKeys.find("MAXGECOS") == this->CapKeys.end()) || ((this->CapKeys.find("MAXGECOS") != this->CapKeys.end()) && (this->CapKeys.find("MAXGECOS")->second != ConvToStr(MAXGECOS)))))
982 reason = "Maximum GECOS (fullname) lengths differ or remote GECOS length not specified";
984 if (((this->CapKeys.find("MAXAWAY") == this->CapKeys.end()) || ((this->CapKeys.find("MAXAWAY") != this->CapKeys.end()) && (this->CapKeys.find("MAXAWAY")->second != ConvToStr(MAXAWAY)))))
985 reason = "Maximum awaymessage lengths differ or remote awaymessage length not specified";
989 this->WriteLine("ERROR :CAPAB negotiation failed: "+reason);
993 else if ((params[0] == "MODULES") && (params.size() == 2))
995 if (!this->ModuleList.length())
997 this->ModuleList.append(params[1]);
1001 this->ModuleList.append(",");
1002 this->ModuleList.append(params[1]);
1005 else if ((params[0] == "CAPABILITIES") && (params.size() == 2))
1007 irc::tokenstream capabs(params[1]);
1008 std::string item = "*";
1009 while ((item = capabs.GetToken()) != "")
1011 /* Process each key/value pair */
1012 std::string::size_type equals = item.rfind('=');
1013 if (equals != std::string::npos)
1015 std::string var = item.substr(0, equals);
1016 std::string value = item.substr(equals+1, item.length());
1017 this->Instance->Log(DEBUG,"Key='%s' Value='%s'",var.c_str(),value.c_str());
1018 CapKeys[var] = value;
1026 /** This function forces this server to quit, removing this server
1027 * and any users on it (and servers and users below that, etc etc).
1028 * It's very slow and pretty clunky, but luckily unless your network
1029 * is having a REAL bad hair day, this function shouldnt be called
1030 * too many times a month ;-)
1032 void SquitServer(std::string &from, TreeServer* Current)
1034 /* recursively squit the servers attached to 'Current'.
1035 * We're going backwards so we don't remove users
1036 * while we still need them ;)
1038 for (unsigned int q = 0; q < Current->ChildCount(); q++)
1040 TreeServer* recursive_server = Current->GetChild(q);
1041 this->SquitServer(from,recursive_server);
1043 /* Now we've whacked the kids, whack self */
1045 num_lost_users += Current->QuitUsers(from);
1048 /** This is a wrapper function for SquitServer above, which
1049 * does some validation first and passes on the SQUIT to all
1050 * other remaining servers.
1052 void Squit(TreeServer* Current,std::string reason)
1054 if ((Current) && (Current != TreeRoot))
1056 std::deque<std::string> params;
1057 params.push_back(Current->GetName());
1058 params.push_back(":"+reason);
1059 DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
1060 if (Current->GetParent() == TreeRoot)
1062 this->Instance->WriteOpers("Server \002"+Current->GetName()+"\002 split: "+reason);
1066 this->Instance->WriteOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
1068 num_lost_servers = 0;
1070 std::string from = Current->GetParent()->GetName()+" "+Current->GetName();
1071 SquitServer(from, Current);
1073 Current->GetParent()->DelChild(Current);
1075 this->Instance->WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
1079 Instance->Log(DEFAULT,"Squit from unknown server");
1083 /** FMODE command - server mode with timestamp checks */
1084 bool ForceMode(std::string source, std::deque<std::string> ¶ms)
1086 /* Chances are this is a 1.0 FMODE without TS */
1087 if (params.size() < 3)
1089 this->WriteLine("ERROR :Version 1.0 FMODE sent to version 1.1 server");
1094 std::string sourceserv;
1096 /* Are we dealing with an FMODE from a user, or from a server? */
1097 userrec* who = this->Instance->FindNick(source);
1100 /* FMODE from a user, set sourceserv to the users server name */
1101 sourceserv = who->server;
1105 /* FMODE from a server, create a fake user to receive mode feedback */
1106 who = new userrec(this->Instance);
1107 who->SetFd(FD_MAGIC_NUMBER);
1108 smode = true; /* Setting this flag tells us we should free the userrec later */
1109 sourceserv = source; /* Set sourceserv to the actual source string */
1111 const char* modelist[64];
1114 memset(&modelist,0,sizeof(modelist));
1115 for (unsigned int q = 0; (q < params.size()) && (q < 64); q++)
1119 /* The timestamp is in this position.
1120 * We don't want to pass that up to the
1121 * server->client protocol!
1123 TS = atoi(params[q].c_str());
1127 /* Everything else is fine to append to the modelist */
1128 modelist[n++] = params[q].c_str();
1132 /* Extract the TS value of the object, either userrec or chanrec */
1133 userrec* dst = this->Instance->FindNick(params[0]);
1134 chanrec* chan = NULL;
1142 chan = this->Instance->FindChan(params[0]);
1149 /* TS is equal: Merge the mode changes, use voooodoooooo on modes
1154 Instance->Log(DEBUG,"Entering TS equality check");
1155 ModeHandler* mh = NULL;
1156 unsigned long paramptr = 3;
1157 std::string to_bounce = "";
1158 std::string to_keep = "";
1159 std::vector<std::string> params_to_keep;
1160 std::string params_to_bounce = "";
1162 char cur_change = 1;
1163 char old_change = 0;
1164 char old_bounce_change = 0;
1165 /* Merge modes, basically do special stuff to mode with params */
1166 for (std::string::iterator x = params[2].begin(); x != params[2].end(); x++)
1179 /* We only care about whats being set,
1180 * not whats being unset
1182 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1184 if ((mh) && (mh->GetNumParams(adding) > 0) && (!mh->IsListMode()))
1186 /* We only want to do special things to
1187 * modes with parameters, we are going to rewrite
1191 adding ? cur_change = '+' : cur_change = '-';
1193 ret = mh->ModeSet(smode ? NULL : who, dst, chan, params[paramptr]);
1195 /* The mode is set here, check which we should keep */
1198 bool which_to_keep = mh->CheckTimeStamp(TS, ourTS, params[paramptr], ret.second, chan);
1200 if (which_to_keep == true)
1202 /* Keep ours, bounce theirs:
1203 * Send back ours to them and
1204 * drop their mode changs
1206 adding ? cur_change = '+' : cur_change = '-';
1207 if (cur_change != old_bounce_change)
1208 to_bounce += cur_change;
1210 old_bounce_change = cur_change;
1212 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1213 params_to_bounce.append(" ").append(ret.second);
1217 /* Keep theirs: Accept their mode change,
1220 adding ? cur_change = '+' : cur_change = '-';
1221 if (cur_change != old_change)
1222 to_keep += cur_change;
1224 old_change = cur_change;
1226 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1227 params_to_keep.push_back(params[paramptr]);
1232 /* Mode isnt set here, we want it */
1233 adding ? cur_change = '+' : cur_change = '-';
1234 if (cur_change != old_change)
1235 to_keep += cur_change;
1237 old_change = cur_change;
1239 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1240 params_to_keep.push_back(params[paramptr]);
1247 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1251 adding ? cur_change = '+' : cur_change = '-';
1253 /* Just keep this, safe to merge with no checks
1254 * it has no parameters
1257 if (cur_change != old_change)
1258 to_keep += cur_change;
1260 old_change = cur_change;
1262 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1264 Instance->Log(DEBUG,"Mode removal %d %d",adding, mh->GetNumParams(adding));
1265 params_to_keep.push_back(params[paramptr++]);
1272 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1276 /* Taking a mode away */
1277 adding ? cur_change = '+' : cur_change = '-';
1279 if (cur_change != old_change)
1280 to_keep += cur_change;
1282 old_change = cur_change;
1284 if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
1285 params_to_keep.push_back(params[paramptr++]);
1292 if (to_bounce.length())
1294 std::deque<std::string> newparams;
1295 newparams.push_back(params[0]);
1296 newparams.push_back(ConvToStr(ourTS));
1297 newparams.push_back(to_bounce+params_to_bounce);
1298 Instance->Log(DEBUG,"BOUNCE BACK: %s",(to_bounce+params_to_bounce).c_str());
1299 DoOneToOne(this->Instance->Config->ServerName,"FMODE",newparams,sourceserv);
1302 if (to_keep.length())
1306 modelist[0] = params[0].c_str();
1307 modelist[1] = to_keep.c_str();
1309 if (params_to_keep.size() > 1)
1311 for (q = 0; (q < params_to_keep.size()) && (q < 64); q++)
1313 Instance->Log(DEBUG,"KEEP Item %d of %d: %s", q, params_to_keep.size(), params_to_keep[q].c_str());
1314 modelist[n++] = params_to_keep[q].c_str();
1320 Instance->Log(DEBUG,"Send mode");
1321 this->Instance->SendMode(modelist, n+2, who);
1325 Instance->Log(DEBUG,"Send mode client");
1326 this->Instance->CallCommandHandler("MODE", modelist, n+2, who);
1329 /* HOT POTATO! PASS IT ON! */
1330 DoOneToAllButSender(source,"FMODE",params,sourceserv);
1334 /* U-lined servers always win regardless of their TS */
1335 if ((TS > ourTS) && (!this->Instance->ULine(source.c_str())))
1337 /* Bounce the mode back to its sender.* We use our lower TS, so the other end
1338 * SHOULD accept it, if its clock is right.
1340 * NOTE: We should check that we arent bouncing anything thats already set at this end.
1341 * If we are, bounce +ourmode to 'reinforce' it. This prevents desyncs.
1342 * e.g. They send +l 50, we have +l 10 set. rather than bounce -l 50, we bounce +l 10.
1344 * Thanks to jilles for pointing out this one-hell-of-an-issue before i even finished
1345 * writing the code. It took me a while to come up with this solution.
1347 * XXX: BE SURE YOU UNDERSTAND THIS CODE FULLY BEFORE YOU MESS WITH IT.
1350 std::deque<std::string> newparams; /* New parameter list we send back */
1351 newparams.push_back(params[0]); /* Target, user or channel */
1352 newparams.push_back(ConvToStr(ourTS)); /* Timestamp value of the target */
1353 newparams.push_back(""); /* This contains the mode string. For now
1354 * it's empty, we fill it below.
1357 /* Intelligent mode bouncing. Don't just invert, reinforce any modes which are already
1358 * set to avoid a desync here.
1360 std::string modebounce = "";
1363 ModeHandler* mh = NULL;
1364 char cur_change = 1;
1365 char old_change = 0;
1366 for (std::string::iterator x = params[2].begin(); x != params[2].end(); x++)
1368 /* Iterate over all mode chars in the sent set */
1371 /* Adding or subtracting modes? */
1379 /* Find the mode handler for this mode */
1380 mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
1382 /* Got a mode handler?
1383 * This also prevents us bouncing modes we have no handler for.
1390 /* Does the mode require a parameter right now?
1391 * If it does, fetch it if we can
1393 if ((mh->GetNumParams(adding) > 0) && (t < params.size()))
1396 /* Call the ModeSet method to determine if its set with the
1397 * given parameter here or not.
1399 ret = mh->ModeSet(smode ? NULL : who, dst, chan, p);
1401 /* XXX: Really. Dont ask.
1402 * Determine from if its set combined with what the current
1403 * 'state' is (adding or not) as to wether we should 'invert'
1404 * or 'reinforce' the mode change
1406 (!ret.first ? (adding ? cur_change = '-' : cur_change = '+') : (!adding ? cur_change = '-' : cur_change = '+'));
1408 /* Quickly determine if we have 'flipped' from + to -,
1409 * or - to +, to prevent unneccessary +/- chars in the
1410 * output string that waste bandwidth
1412 if (cur_change != old_change)
1413 modebounce += cur_change;
1414 old_change = cur_change;
1416 /* Add the mode character to the output string */
1417 modebounce += mh->GetModeChar();
1419 /* We got a parameter back from ModeHandler::ModeSet,
1420 * are we supposed to be sending one out right now?
1422 if (ret.second.length())
1424 if (mh->GetNumParams(cur_change == '+') > 0)
1425 /* Yes we're supposed to be sending out
1426 * the parameter. Make sure it goes
1428 newparams.push_back(ret.second);
1436 /* Update the parameters for FMODE with the new 'bounced' string */
1437 newparams[2] = modebounce;
1438 /* Only send it back the way it came, no need to send it anywhere else */
1439 DoOneToOne(this->Instance->Config->ServerName,"FMODE",newparams,sourceserv);
1440 Instance->Log(DEBUG,"FMODE bounced intelligently, our TS less than theirs and the other server is NOT a uline.");
1444 Instance->Log(DEBUG,"Allow modes, TS lower for sender");
1445 /* The server was ulined, but something iffy is up with the TS.
1446 * Sound the alarm bells!
1448 if ((this->Instance->ULine(sourceserv.c_str())) && (TS > ourTS))
1450 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());
1452 /* Allow the mode, route it to either server or user command handling */
1454 this->Instance->SendMode(modelist,n,who);
1456 this->Instance->CallCommandHandler("MODE", modelist, n, who);
1458 /* HOT POTATO! PASS IT ON! */
1459 DoOneToAllButSender(source,"FMODE",params,sourceserv);
1461 /* Are we supposed to free the userrec? */
1468 /** FTOPIC command */
1469 bool ForceTopic(std::string source, std::deque<std::string> ¶ms)
1471 if (params.size() != 4)
1473 time_t ts = atoi(params[1].c_str());
1474 std::string nsource = source;
1476 chanrec* c = this->Instance->FindChan(params[0]);
1479 if ((ts >= c->topicset) || (!*c->topic))
1481 std::string oldtopic = c->topic;
1482 strlcpy(c->topic,params[3].c_str(),MAXTOPIC);
1483 strlcpy(c->setby,params[2].c_str(),NICKMAX-1);
1485 /* if the topic text is the same as the current topic,
1486 * dont bother to send the TOPIC command out, just silently
1487 * update the set time and set nick.
1489 if (oldtopic != params[3])
1491 userrec* user = this->Instance->FindNick(source);
1494 c->WriteChannelWithServ(source.c_str(), "TOPIC %s :%s", c->name, c->topic);
1498 c->WriteChannel(user, "TOPIC %s :%s", c->name, c->topic);
1499 nsource = user->server;
1501 /* all done, send it on its way */
1502 params[3] = ":" + params[3];
1503 DoOneToAllButSender(source,"FTOPIC",params,nsource);
1512 /** FJOIN, similar to unreal SJOIN */
1513 bool ForceJoin(std::string source, std::deque<std::string> ¶ms)
1515 if (params.size() < 3)
1519 char modestring[MAXBUF];
1520 char* mode_users[127];
1521 memset(&mode_users,0,sizeof(mode_users));
1522 mode_users[0] = first;
1523 mode_users[1] = modestring;
1524 strcpy(modestring,"+");
1525 unsigned int modectr = 2;
1527 userrec* who = NULL;
1528 std::string channel = params[0];
1529 time_t TS = atoi(params[1].c_str());
1532 chanrec* chan = this->Instance->FindChan(channel);
1537 strlcpy(mode_users[0],channel.c_str(),MAXBUF);
1539 /* default is a high value, which if we dont have this
1540 * channel will let the other side apply their modes.
1542 time_t ourTS = time(NULL)+600;
1543 chanrec* us = this->Instance->FindChan(channel);
1549 Instance->Log(DEBUG,"FJOIN detected, our TS=%lu, their TS=%lu",ourTS,TS);
1551 irc::tokenstream users(params[2]);
1552 std::string item = "*";
1554 /* do this first, so our mode reversals are correctly received by other servers
1555 * if there is a TS collision.
1557 params[2] = ":" + params[2];
1558 DoOneToAllButSender(source,"FJOIN",params,source);
1561 item = users.GetToken();
1562 /* process one user at a time, applying modes. */
1563 char* usr = (char*)item.c_str();
1564 /* Safety check just to make sure someones not sent us an FJOIN full of spaces
1565 * (is this even possible?) */
1568 char* permissions = usr;
1570 while ((*permissions) && (*permissions != ','))
1572 ModeHandler* mh = Instance->Modes->FindPrefix(*permissions);
1576 charlcat(modestring,mh->GetModeChar(),MAXBUF);
1580 this->Instance->WriteOpers("ERROR: We received a user with an unknown prefix '%c'. Closed connection to avoid a desync.",mh->GetPrefix());
1581 this->WriteLine(std::string("ERROR :Invalid prefix '")+mh->GetModeChar()+"' in FJOIN");
1589 /* Did they get any modes? How many times? */
1590 for (int k = 0; k < ntimes; k++)
1591 mode_users[modectr++] = strdup(usr);
1593 who = this->Instance->FindNick(usr);
1596 chanrec::JoinUser(this->Instance, who, channel.c_str(), true, key);
1597 if (modectr >= (MAXMODES-1))
1599 /* theres a mode for this user. push them onto the mode queue, and flush it
1600 * if there are more than MAXMODES to go.
1602 if ((ourTS >= TS) || (this->Instance->ULine(who->server)))
1604 /* We also always let u-lined clients win, no matter what the TS value */
1605 Instance->Log(DEBUG,"Our our channel newer than theirs, accepting their modes");
1606 this->Instance->SendMode((const char**)mode_users,modectr,who);
1609 Instance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",us->name,ourTS,TS);
1616 Instance->Log(DEBUG,"Their channel newer than ours, bouncing their modes");
1617 /* bouncy bouncy! */
1618 std::deque<std::string> params;
1619 /* modes are now being UNSET... */
1620 *mode_users[1] = '-';
1621 for (unsigned int x = 0; x < modectr; x++)
1625 params.push_back(ConvToStr(us->age));
1627 params.push_back(mode_users[x]);
1630 // tell everyone to bounce the modes. bad modes, bad!
1631 DoOneToMany(this->Instance->Config->ServerName,"FMODE",params);
1633 strcpy(mode_users[1],"+");
1634 for (unsigned int f = 2; f < modectr; f++)
1635 free(mode_users[f]);
1641 Instance->Log(SPARSE,"Warning! Invalid user %s in FJOIN to channel %s IGNORED", who->nick, channel.c_str());
1646 /* there werent enough modes built up to flush it during FJOIN,
1647 * or, there are a number left over. flush them out.
1649 if ((modectr > 2) && (who) && (us))
1653 Instance->Log(DEBUG,"Our our channel newer than theirs, accepting their modes");
1654 this->Instance->SendMode((const char**)mode_users,modectr,who);
1657 Instance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",us->name,ourTS,TS);
1664 Instance->Log(DEBUG,"Their channel newer than ours, bouncing their modes");
1665 std::deque<std::string> params;
1666 *mode_users[1] = '-';
1667 for (unsigned int x = 0; x < modectr; x++)
1671 params.push_back(ConvToStr(us->age));
1673 params.push_back(mode_users[x]);
1675 DoOneToMany(this->Instance->Config->ServerName,"FMODE",params);
1678 for (unsigned int f = 2; f < modectr; f++)
1679 free(mode_users[f]);
1685 bool IntroduceClient(std::string source, std::deque<std::string> ¶ms)
1687 if (params.size() < 8)
1689 if (params.size() > 8)
1691 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+params[1]+" :Invalid client introduction ("+params[1]+"?)");
1694 // NICK age nick host dhost ident +modes ip :gecos
1696 time_t age = atoi(params[0].c_str());
1698 /* This used to have a pretty craq'y loop doing the same thing,
1699 * now we just let the STL do the hard work (more efficiently)
1701 std::string::size_type pos_after_plus = params[5].find_first_not_of('+');
1702 if (pos_after_plus != std::string::npos)
1703 params[5] = params[5].substr(pos_after_plus);
1705 const char* tempnick = params[1].c_str();
1706 Instance->Log(DEBUG,"Introduce client %s!%s@%s",tempnick,params[4].c_str(),params[2].c_str());
1708 user_hash::iterator iter = this->Instance->clientlist.find(tempnick);
1710 if (iter != this->Instance->clientlist.end())
1713 Instance->Log(DEBUG,"Nick collision on %s!%s@%s: %lu %lu",tempnick,params[4].c_str(),params[2].c_str(),(unsigned long)age,(unsigned long)iter->second->age);
1714 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+tempnick+" :Nickname collision");
1718 userrec* _new = new userrec(this->Instance);
1719 this->Instance->clientlist[tempnick] = _new;
1720 _new->SetFd(FD_MAGIC_NUMBER);
1721 strlcpy(_new->nick, tempnick,NICKMAX-1);
1722 strlcpy(_new->host, params[2].c_str(),63);
1723 strlcpy(_new->dhost, params[3].c_str(),63);
1724 _new->server = this->Instance->FindServerNamePtr(source.c_str());
1725 strlcpy(_new->ident, params[4].c_str(),IDENTMAX);
1726 strlcpy(_new->fullname, params[7].c_str(),MAXGECOS);
1727 _new->registered = REG_ALL;
1730 for (std::string::iterator v = params[5].begin(); v != params[5].end(); v++)
1731 _new->modes[(*v)-65] = 1;
1733 #ifdef SUPPORT_IP6LINKS
1734 if (params[6].find_first_of(":") != std::string::npos)
1735 _new->SetSockAddr(AF_INET6, params[6].c_str(), 0);
1738 _new->SetSockAddr(AF_INET, params[6].c_str(), 0);
1740 this->Instance->SNO->WriteToSnoMask('C',"Client connecting at %s: %s!%s@%s [%s]",_new->server,_new->nick,_new->ident,_new->host, _new->GetIPString());
1742 params[7] = ":" + params[7];
1743 DoOneToAllButSender(source,"NICK",params,source);
1745 // Increment the Source Servers User Count..
1746 TreeServer* SourceServer = FindServer(source);
1749 Instance->Log(DEBUG,"Found source server of %s",_new->nick);
1750 SourceServer->AddUserCount();
1756 /** Send one or more FJOINs for a channel of users.
1757 * If the length of a single line is more than 480-NICKMAX
1758 * in length, it is split over multiple lines.
1760 void SendFJoins(TreeServer* Current, chanrec* c)
1762 Instance->Log(DEBUG,"Sending FJOINs to other server for %s",c->name);
1764 std::string individual_halfops = std::string(":")+this->Instance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age);
1766 size_t dlen, curlen;
1767 dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,c->name,(unsigned long)c->age);
1769 char* ptr = list + dlen;
1771 CUList *ulist = c->GetUsers();
1772 std::vector<userrec*> specific_halfop;
1773 std::vector<userrec*> specific_voice;
1774 std::string modes = "";
1775 std::string params = "";
1777 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1779 // The first parameter gets a : before it
1780 size_t ptrlen = snprintf(ptr, MAXBUF, " %s%s,%s", !numusers ? ":" : "", c->GetAllPrefixChars(i->second), i->second->nick);
1787 if (curlen > (480-NICKMAX))
1789 this->WriteLine(list);
1790 dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,c->name,(unsigned long)c->age);
1798 this->WriteLine(list);
1800 for (BanList::iterator b = c->bans.begin(); b != c->bans.end(); b++)
1803 params.append(b->data).append(" ");
1805 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age)+" +"+c->ChanModes(true)+modes+" "+params);
1808 /** Send G, Q, Z and E lines */
1809 void SendXLines(TreeServer* Current)
1812 std::string n = this->Instance->Config->ServerName;
1813 const char* sn = n.c_str();
1815 /* Yes, these arent too nice looking, but they get the job done */
1816 for (std::vector<ZLine>::iterator i = Instance->XLines->zlines.begin(); i != Instance->XLines->zlines.end(); i++, iterations++)
1818 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);
1819 this->WriteLine(data);
1821 for (std::vector<QLine>::iterator i = Instance->XLines->qlines.begin(); i != Instance->XLines->qlines.end(); i++, iterations++)
1823 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);
1824 this->WriteLine(data);
1826 for (std::vector<GLine>::iterator i = Instance->XLines->glines.begin(); i != Instance->XLines->glines.end(); i++, iterations++)
1828 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);
1829 this->WriteLine(data);
1831 for (std::vector<ELine>::iterator i = Instance->XLines->elines.begin(); i != Instance->XLines->elines.end(); i++, iterations++)
1833 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);
1834 this->WriteLine(data);
1836 for (std::vector<ZLine>::iterator i = Instance->XLines->pzlines.begin(); i != Instance->XLines->pzlines.end(); i++, iterations++)
1838 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);
1839 this->WriteLine(data);
1841 for (std::vector<QLine>::iterator i = Instance->XLines->pqlines.begin(); i != Instance->XLines->pqlines.end(); i++, iterations++)
1843 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);
1844 this->WriteLine(data);
1846 for (std::vector<GLine>::iterator i = Instance->XLines->pglines.begin(); i != Instance->XLines->pglines.end(); i++, iterations++)
1848 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);
1849 this->WriteLine(data);
1851 for (std::vector<ELine>::iterator i = Instance->XLines->pelines.begin(); i != Instance->XLines->pelines.end(); i++, iterations++)
1853 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);
1854 this->WriteLine(data);
1858 /** Send channel modes and topics */
1859 void SendChannelModes(TreeServer* Current)
1862 std::deque<std::string> list;
1864 std::string n = this->Instance->Config->ServerName;
1865 const char* sn = n.c_str();
1866 for (chan_hash::iterator c = this->Instance->chanlist.begin(); c != this->Instance->chanlist.end(); c++, iterations++)
1868 SendFJoins(Current, c->second);
1869 if (*c->second->topic)
1871 snprintf(data,MAXBUF,":%s FTOPIC %s %lu %s :%s",sn,c->second->name,(unsigned long)c->second->topicset,c->second->setby,c->second->topic);
1872 this->WriteLine(data);
1874 FOREACH_MOD_I(this->Instance,I_OnSyncChannel,OnSyncChannel(c->second,(Module*)TreeProtocolModule,(void*)this));
1876 c->second->GetExtList(list);
1877 for (unsigned int j = 0; j < list.size(); j++)
1879 FOREACH_MOD_I(this->Instance,I_OnSyncChannelMetaData,OnSyncChannelMetaData(c->second,(Module*)TreeProtocolModule,(void*)this,list[j]));
1884 /** send all users and their oper state/modes */
1885 void SendUsers(TreeServer* Current)
1888 std::deque<std::string> list;
1890 for (user_hash::iterator u = this->Instance->clientlist.begin(); u != this->Instance->clientlist.end(); u++, iterations++)
1892 if (u->second->registered == REG_ALL)
1894 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);
1895 this->WriteLine(data);
1896 if (*u->second->oper)
1898 this->WriteLine(":"+std::string(u->second->nick)+" OPERTYPE "+std::string(u->second->oper));
1900 if (*u->second->awaymsg)
1902 this->WriteLine(":"+std::string(u->second->nick)+" AWAY :"+std::string(u->second->awaymsg));
1904 FOREACH_MOD_I(this->Instance,I_OnSyncUser,OnSyncUser(u->second,(Module*)TreeProtocolModule,(void*)this));
1906 u->second->GetExtList(list);
1907 for (unsigned int j = 0; j < list.size(); j++)
1909 FOREACH_MOD_I(this->Instance,I_OnSyncUserMetaData,OnSyncUserMetaData(u->second,(Module*)TreeProtocolModule,(void*)this,list[j]));
1915 /** This function is called when we want to send a netburst to a local
1916 * server. There is a set order we must do this, because for example
1917 * users require their servers to exist, and channels require their
1918 * users to exist. You get the idea.
1920 void DoBurst(TreeServer* s)
1922 std::string burst = "BURST "+ConvToStr(time(NULL));
1923 std::string endburst = "ENDBURST";
1924 // Because by the end of the netburst, it could be gone!
1925 std::string name = s->GetName();
1926 this->Instance->SNO->WriteToSnoMask('l',"Bursting to \2"+name+"\2.");
1927 this->WriteLine(burst);
1928 /* send our version string */
1929 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" VERSION :"+this->Instance->GetVersionString());
1930 /* Send server tree */
1931 this->SendServers(TreeRoot,s,1);
1932 /* Send users and their oper status */
1934 /* Send everything else (channel modes, xlines etc) */
1935 this->SendChannelModes(s);
1936 this->SendXLines(s);
1937 FOREACH_MOD_I(this->Instance,I_OnSyncOtherMetaData,OnSyncOtherMetaData((Module*)TreeProtocolModule,(void*)this));
1938 this->WriteLine(endburst);
1939 this->Instance->SNO->WriteToSnoMask('l',"Finished bursting to \2"+name+"\2.");
1942 /** This function is called when we receive data from a remote
1943 * server. We buffer the data in a std::string (it doesnt stay
1944 * there for long), reading using InspSocket::Read() which can
1945 * read up to 16 kilobytes in one operation.
1947 * IF THIS FUNCTION RETURNS FALSE, THE CORE CLOSES AND DELETES
1948 * THE SOCKET OBJECT FOR US.
1950 virtual bool OnDataReady()
1952 char* data = this->Read();
1953 /* Check that the data read is a valid pointer and it has some content */
1956 this->in_buffer.append(data);
1957 /* While there is at least one new line in the buffer,
1958 * do something useful (we hope!) with it.
1960 while (in_buffer.find("\n") != std::string::npos)
1962 std::string ret = in_buffer.substr(0,in_buffer.find("\n")-1);
1963 in_buffer = in_buffer.substr(in_buffer.find("\n")+1,in_buffer.length()-in_buffer.find("\n"));
1964 if (ret.find("\r") != std::string::npos)
1965 ret = in_buffer.substr(0,in_buffer.find("\r")-1);
1966 /* Process this one, abort if it
1967 * didnt return true.
1973 memset(result,0,1024);
1975 Instance->Log(DEBUG,"Original string '%s'",ret.c_str());
1976 /* ERROR + CAPAB is still allowed unencryped */
1977 if ((ret.substr(0,7) != "ERROR :") && (ret.substr(0,6) != "CAPAB "))
1979 int nbytes = from64tobits(out, ret.c_str(), 1024);
1980 if ((nbytes > 0) && (nbytes < 1024))
1982 Instance->Log(DEBUG,"m_spanningtree: decrypt %d bytes",nbytes);
1983 ctx_in->Decrypt(out, result, nbytes, 0);
1984 for (int t = 0; t < nbytes; t++)
1985 if (result[t] == '\7') result[t] = 0;
1990 if (!this->ProcessLine(ret))
1992 Instance->Log(DEBUG,"ProcessLine says no!");
1998 /* EAGAIN returns an empty but non-NULL string, so this
1999 * evaluates to TRUE for EAGAIN but to FALSE for EOF.
2001 return (data && !*data);
2004 int WriteLine(std::string line)
2006 Instance->Log(DEBUG,"OUT: %s",line.c_str());
2010 char result64[10240];
2011 if (this->keylength)
2013 // pad it to the key length
2014 int n = this->keylength - (line.length() % this->keylength);
2017 Instance->Log(DEBUG,"Append %d chars to line to make it %d long from %d, key length %d",n,n+line.length(),line.length(),this->keylength);
2018 line.append(n,'\7');
2021 unsigned int ll = line.length();
2022 ctx_out->Encrypt(line.c_str(), result, ll, 0);
2023 to64frombits((unsigned char*)result64,(unsigned char*)result,ll);
2025 //int from64tobits(char *out, const char *in, int maxlen);
2027 return this->Write(line + "\r\n");
2030 /* Handle ERROR command */
2031 bool Error(std::deque<std::string> ¶ms)
2033 if (params.size() < 1)
2035 this->Instance->SNO->WriteToSnoMask('l',"ERROR from %s: %s",(InboundServerName != "" ? InboundServerName.c_str() : myhost.c_str()),params[0].c_str());
2036 /* we will return false to cause the socket to close. */
2040 /** remote MOTD. leet, huh? */
2041 bool Motd(std::string prefix, std::deque<std::string> ¶ms)
2043 if (params.size() > 0)
2045 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
2047 /* It's for our server */
2048 string_list results;
2049 userrec* source = this->Instance->FindNick(prefix);
2053 std::deque<std::string> par;
2054 par.push_back(prefix);
2057 if (!Instance->Config->MOTD.size())
2059 par[1] = std::string("::")+Instance->Config->ServerName+" 422 "+source->nick+" :Message of the day file is missing.";
2060 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2064 par[1] = std::string("::")+Instance->Config->ServerName+" 375 "+source->nick+" :"+Instance->Config->ServerName+" message of the day";
2065 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2067 for (unsigned int i = 0; i < Instance->Config->MOTD.size(); i++)
2069 par[1] = std::string("::")+Instance->Config->ServerName+" 372 "+source->nick+" :- "+Instance->Config->MOTD[i];
2070 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2073 par[1] = std::string("::")+Instance->Config->ServerName+" 376 "+source->nick+" End of message of the day.";
2074 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2080 userrec* source = this->Instance->FindNick(prefix);
2082 DoOneToOne(prefix, "MOTD", params, params[0]);
2088 /** remote ADMIN. leet, huh? */
2089 bool Admin(std::string prefix, std::deque<std::string> ¶ms)
2091 if (params.size() > 0)
2093 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
2095 /* It's for our server */
2096 string_list results;
2097 userrec* source = this->Instance->FindNick(prefix);
2101 std::deque<std::string> par;
2102 par.push_back(prefix);
2105 par[1] = std::string("::")+Instance->Config->ServerName+" 256 "+source->nick+" :Administrative info for "+Instance->Config->ServerName;
2106 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2108 par[1] = std::string("::")+Instance->Config->ServerName+" 257 "+source->nick+" :Name - "+Instance->Config->AdminName;
2109 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2111 par[1] = std::string("::")+Instance->Config->ServerName+" 258 "+source->nick+" :Nickname - "+Instance->Config->AdminNick;
2112 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2114 par[1] = std::string("::")+Instance->Config->ServerName+" 258 "+source->nick+" :E-Mail - "+Instance->Config->AdminEmail;
2115 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2121 userrec* source = this->Instance->FindNick(prefix);
2123 DoOneToOne(prefix, "ADMIN", params, params[0]);
2129 bool Stats(std::string prefix, std::deque<std::string> ¶ms)
2131 /* Get the reply to a STATS query if it matches this servername,
2132 * and send it back as a load of PUSH queries
2134 if (params.size() > 1)
2136 if (this->Instance->MatchText(this->Instance->Config->ServerName, params[1]))
2138 /* It's for our server */
2139 string_list results;
2140 userrec* source = this->Instance->FindNick(prefix);
2143 std::deque<std::string> par;
2144 par.push_back(prefix);
2146 DoStats(this->Instance, *(params[0].c_str()), source, results);
2147 for (size_t i = 0; i < results.size(); i++)
2149 par[1] = "::" + results[i];
2150 DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
2157 userrec* source = this->Instance->FindNick(prefix);
2159 DoOneToOne(prefix, "STATS", params, params[1]);
2166 /** Because the core won't let users or even SERVERS set +o,
2167 * we use the OPERTYPE command to do this.
2169 bool OperType(std::string prefix, std::deque<std::string> ¶ms)
2171 if (params.size() != 1)
2173 Instance->Log(DEBUG,"Received invalid oper type from %s",prefix.c_str());
2176 std::string opertype = params[0];
2177 userrec* u = this->Instance->FindNick(prefix);
2180 u->modes[UM_OPERATOR] = 1;
2181 strlcpy(u->oper,opertype.c_str(),NICKMAX-1);
2182 DoOneToAllButSender(u->nick,"OPERTYPE",params,u->server);
2187 /** Because Andy insists that services-compatible servers must
2188 * implement SVSNICK and SVSJOIN, that's exactly what we do :p
2190 bool ForceNick(std::string prefix, std::deque<std::string> ¶ms)
2192 if (params.size() < 3)
2195 userrec* u = this->Instance->FindNick(params[0]);
2199 DoOneToAllButSender(prefix,"SVSNICK",params,prefix);
2202 std::deque<std::string> par;
2203 par.push_back(params[1]);
2204 /* This is not required as one is sent in OnUserPostNick below
2206 //DoOneToMany(u->nick,"NICK",par);
2207 if (!u->ForceNickChange(params[1].c_str()))
2209 userrec::QuitUser(this->Instance, u, "Nickname collision");
2212 u->age = atoi(params[2].c_str());
2218 bool ServiceJoin(std::string prefix, std::deque<std::string> ¶ms)
2220 if (params.size() < 2)
2223 userrec* u = this->Instance->FindNick(params[0]);
2227 chanrec::JoinUser(this->Instance, u, params[1].c_str(), false);
2228 DoOneToAllButSender(prefix,"SVSJOIN",params,prefix);
2233 bool RemoteRehash(std::string prefix, std::deque<std::string> ¶ms)
2235 if (params.size() < 1)
2238 std::string servermask = params[0];
2240 if (this->Instance->MatchText(this->Instance->Config->ServerName,servermask))
2242 this->Instance->SNO->WriteToSnoMask('l',"Remote rehash initiated from server \002"+prefix+"\002.");
2243 this->Instance->RehashServer();
2244 ReadConfiguration(false);
2246 DoOneToAllButSender(prefix,"REHASH",params,prefix);
2250 bool RemoteKill(std::string prefix, std::deque<std::string> ¶ms)
2252 if (params.size() != 2)
2255 std::string nick = params[0];
2256 userrec* u = this->Instance->FindNick(prefix);
2257 userrec* who = this->Instance->FindNick(nick);
2261 /* Prepend kill source, if we don't have one */
2262 std::string sourceserv = prefix;
2265 sourceserv = u->server;
2267 if (*(params[1].c_str()) != '[')
2269 params[1] = "[" + sourceserv + "] Killed (" + params[1] +")";
2271 std::string reason = params[1];
2272 params[1] = ":" + params[1];
2273 DoOneToAllButSender(prefix,"KILL",params,sourceserv);
2274 who->Write(":%s KILL %s :%s (%s)", sourceserv.c_str(), who->nick, sourceserv.c_str(), reason.c_str());
2275 userrec::QuitUser(this->Instance,who,reason);
2280 bool LocalPong(std::string prefix, std::deque<std::string> ¶ms)
2282 if (params.size() < 1)
2285 if (params.size() == 1)
2287 TreeServer* ServerSource = FindServer(prefix);
2290 ServerSource->SetPingFlag();
2295 std::string forwardto = params[1];
2296 if (forwardto == this->Instance->Config->ServerName)
2299 * this is a PONG for us
2300 * if the prefix is a user, check theyre local, and if they are,
2301 * dump the PONG reply back to their fd. If its a server, do nowt.
2302 * Services might want to send these s->s, but we dont need to yet.
2304 userrec* u = this->Instance->FindNick(prefix);
2308 u->WriteServ("PONG %s %s",params[0].c_str(),params[1].c_str());
2313 // not for us, pass it on :)
2314 DoOneToOne(prefix,"PONG",params,forwardto);
2321 bool MetaData(std::string prefix, std::deque<std::string> ¶ms)
2323 if (params.size() < 3)
2326 TreeServer* ServerSource = FindServer(prefix);
2330 if (params[0] == "*")
2332 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_OTHER,NULL,params[1],params[2]));
2334 else if (*(params[0].c_str()) == '#')
2336 chanrec* c = this->Instance->FindChan(params[0]);
2339 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]));
2342 else if (*(params[0].c_str()) != '#')
2344 userrec* u = this->Instance->FindNick(params[0]);
2347 FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2]));
2352 params[2] = ":" + params[2];
2353 DoOneToAllButSender(prefix,"METADATA",params,prefix);
2357 bool ServerVersion(std::string prefix, std::deque<std::string> ¶ms)
2359 if (params.size() < 1)
2362 TreeServer* ServerSource = FindServer(prefix);
2366 ServerSource->SetVersion(params[0]);
2368 params[0] = ":" + params[0];
2369 DoOneToAllButSender(prefix,"VERSION",params,prefix);
2373 bool ChangeHost(std::string prefix, std::deque<std::string> ¶ms)
2375 if (params.size() < 1)
2378 userrec* u = this->Instance->FindNick(prefix);
2382 u->ChangeDisplayedHost(params[0].c_str());
2383 DoOneToAllButSender(prefix,"FHOST",params,u->server);
2388 bool AddLine(std::string prefix, std::deque<std::string> ¶ms)
2390 if (params.size() < 6)
2393 bool propogate = false;
2395 switch (*(params[0].c_str()))
2398 propogate = Instance->XLines->add_zline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2399 Instance->XLines->zline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2402 propogate = Instance->XLines->add_qline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2403 Instance->XLines->qline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2406 propogate = Instance->XLines->add_eline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2407 Instance->XLines->eline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2410 propogate = Instance->XLines->add_gline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2411 Instance->XLines->gline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
2414 propogate = Instance->XLines->add_kline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
2417 /* Just in case... */
2418 this->Instance->SNO->WriteToSnoMask('x',"\2WARNING\2: Invalid xline type '"+params[0]+"' sent by server "+prefix+", ignored!");
2423 /* Send it on its way */
2426 if (atoi(params[4].c_str()))
2428 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());
2432 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());
2434 params[5] = ":" + params[5];
2435 DoOneToAllButSender(prefix,"ADDLINE",params,prefix);
2437 if (!this->bursting)
2439 Instance->Log(DEBUG,"Applying lines...");
2440 Instance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
2445 bool ChangeName(std::string prefix, std::deque<std::string> ¶ms)
2447 if (params.size() < 1)
2450 userrec* u = this->Instance->FindNick(prefix);
2454 u->ChangeName(params[0].c_str());
2455 params[0] = ":" + params[0];
2456 DoOneToAllButSender(prefix,"FNAME",params,u->server);
2461 bool Whois(std::string prefix, std::deque<std::string> ¶ms)
2463 if (params.size() < 1)
2466 Instance->Log(DEBUG,"In IDLE command");
2467 userrec* u = this->Instance->FindNick(prefix);
2471 Instance->Log(DEBUG,"USER EXISTS: %s",u->nick);
2472 // an incoming request
2473 if (params.size() == 1)
2475 userrec* x = this->Instance->FindNick(params[0]);
2476 if ((x) && (IS_LOCAL(x)))
2478 userrec* x = this->Instance->FindNick(params[0]);
2479 char signon[MAXBUF];
2482 snprintf(signon,MAXBUF,"%lu",(unsigned long)x->signon);
2483 snprintf(idle,MAXBUF,"%lu",(unsigned long)abs((x->idle_lastmsg)-time(NULL)));
2484 std::deque<std::string> par;
2485 par.push_back(prefix);
2486 par.push_back(signon);
2487 par.push_back(idle);
2488 // ours, we're done, pass it BACK
2489 DoOneToOne(params[0],"IDLE",par,u->server);
2493 // not ours pass it on
2494 DoOneToOne(prefix,"IDLE",params,x->server);
2497 else if (params.size() == 3)
2499 std::string who_did_the_whois = params[0];
2500 userrec* who_to_send_to = this->Instance->FindNick(who_did_the_whois);
2501 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
2503 // an incoming reply to a whois we sent out
2504 std::string nick_whoised = prefix;
2505 unsigned long signon = atoi(params[1].c_str());
2506 unsigned long idle = atoi(params[2].c_str());
2507 if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
2508 do_whois(this->Instance,who_to_send_to,u,signon,idle,nick_whoised.c_str());
2512 // not ours, pass it on
2513 DoOneToOne(prefix,"IDLE",params,who_to_send_to->server);
2520 bool Push(std::string prefix, std::deque<std::string> ¶ms)
2522 if (params.size() < 2)
2525 userrec* u = this->Instance->FindNick(params[0]);
2532 u->Write(params[1]);
2536 // continue the raw onwards
2537 params[1] = ":" + params[1];
2538 DoOneToOne(prefix,"PUSH",params,u->server);
2543 bool Time(std::string prefix, std::deque<std::string> ¶ms)
2545 // :source.server TIME remote.server sendernick
2546 // :remote.server TIME source.server sendernick TS
2547 if (params.size() == 2)
2549 // someone querying our time?
2550 if (this->Instance->Config->ServerName == params[0])
2552 userrec* u = this->Instance->FindNick(params[1]);
2556 snprintf(curtime,256,"%lu",(unsigned long)time(NULL));
2557 params.push_back(curtime);
2559 DoOneToOne(this->Instance->Config->ServerName,"TIME",params,params[0]);
2564 // not us, pass it on
2565 userrec* u = this->Instance->FindNick(params[1]);
2567 DoOneToOne(prefix,"TIME",params,params[0]);
2570 else if (params.size() == 3)
2572 // a response to a previous TIME
2573 userrec* u = this->Instance->FindNick(params[1]);
2574 if ((u) && (IS_LOCAL(u)))
2576 time_t rawtime = atol(params[2].c_str());
2577 struct tm * timeinfo;
2578 timeinfo = localtime(&rawtime);
2580 snprintf(tms,26,"%s",asctime(timeinfo));
2582 u->WriteServ("391 %s %s :%s",u->nick,prefix.c_str(),tms);
2587 DoOneToOne(prefix,"TIME",params,u->server);
2593 bool LocalPing(std::string prefix, std::deque<std::string> ¶ms)
2595 if (params.size() < 1)
2598 if (params.size() == 1)
2600 std::string stufftobounce = params[0];
2601 this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" PONG "+stufftobounce);
2606 std::string forwardto = params[1];
2607 if (forwardto == this->Instance->Config->ServerName)
2609 // this is a ping for us, send back PONG to the requesting server
2610 params[1] = params[0];
2611 params[0] = forwardto;
2612 DoOneToOne(forwardto,"PONG",params,params[1]);
2616 // not for us, pass it on :)
2617 DoOneToOne(prefix,"PING",params,forwardto);
2623 bool RemoteServer(std::string prefix, std::deque<std::string> ¶ms)
2625 if (params.size() < 4)
2628 std::string servername = params[0];
2629 std::string password = params[1];
2630 // hopcount is not used for a remote server, we calculate this ourselves
2631 std::string description = params[3];
2632 TreeServer* ParentOfThis = FindServer(prefix);
2636 this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
2639 TreeServer* CheckDupe = FindServer(servername);
2642 this->WriteLine("ERROR :Server "+servername+" already exists!");
2643 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+servername+"\2 denied, already exists");
2646 TreeServer* Node = new TreeServer(this->Instance,servername,description,ParentOfThis,NULL);
2647 ParentOfThis->AddChild(Node);
2648 params[3] = ":" + params[3];
2649 DoOneToAllButSender(prefix,"SERVER",params,prefix);
2650 this->Instance->SNO->WriteToSnoMask('l',"Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
2654 bool Outbound_Reply_Server(std::deque<std::string> ¶ms)
2656 if (params.size() < 4)
2659 irc::string servername = params[0].c_str();
2660 std::string sname = params[0];
2661 std::string password = params[1];
2662 int hops = atoi(params[2].c_str());
2666 this->WriteLine("ERROR :Server too far away for authentication");
2667 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
2670 std::string description = params[3];
2671 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2673 if ((x->Name == servername) && (x->RecvPass == password))
2675 TreeServer* CheckDupe = FindServer(sname);
2678 this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
2679 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
2682 // Begin the sync here. this kickstarts the
2683 // other side, waiting in WAIT_AUTH_2 state,
2684 // into starting their burst, as it shows
2685 // that we're happy.
2686 this->LinkState = CONNECTED;
2687 // we should add the details of this server now
2688 // to the servers tree, as a child of the root
2690 TreeServer* Node = new TreeServer(this->Instance,sname,description,TreeRoot,this);
2691 TreeRoot->AddChild(Node);
2692 params[3] = ":" + params[3];
2693 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,sname);
2694 this->bursting = true;
2695 this->DoBurst(Node);
2699 this->WriteLine("ERROR :Invalid credentials");
2700 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
2704 bool Inbound_Server(std::deque<std::string> ¶ms)
2706 if (params.size() < 4)
2709 irc::string servername = params[0].c_str();
2710 std::string sname = params[0];
2711 std::string password = params[1];
2712 int hops = atoi(params[2].c_str());
2716 this->WriteLine("ERROR :Server too far away for authentication");
2717 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
2720 std::string description = params[3];
2721 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2723 if ((x->Name == servername) && (x->RecvPass == password))
2725 TreeServer* CheckDupe = FindServer(sname);
2728 this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
2729 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
2732 /* If the config says this link is encrypted, but the remote side
2733 * hasnt bothered to send the AES command before SERVER, then we
2734 * boot them off as we MUST have this connection encrypted.
2736 if ((x->EncryptionKey != "") && (!this->ctx_in))
2738 this->WriteLine("ERROR :This link requires AES encryption to be enabled. Plaintext connection refused.");
2739 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, remote server did not enable AES.");
2742 this->Instance->SNO->WriteToSnoMask('l',"Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] ("+description+")");
2743 this->InboundServerName = sname;
2744 this->InboundDescription = description;
2745 // this is good. Send our details: Our server name and description and hopcount of 0,
2746 // along with the sendpass from this block.
2747 this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc);
2748 // move to the next state, we are now waiting for THEM.
2749 this->LinkState = WAIT_AUTH_2;
2753 this->WriteLine("ERROR :Invalid credentials");
2754 this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
2758 void Split(std::string line, std::deque<std::string> &n)
2761 irc::tokenstream tokens(line);
2763 while ((param = tokens.GetToken()) != "")
2768 bool ProcessLine(std::string line)
2770 std::deque<std::string> params;
2771 irc::string command;
2777 line = line.substr(0, line.find_first_of("\r\n"));
2779 Instance->Log(DEBUG,"IN: %s", line.c_str());
2781 this->Split(line.c_str(),params);
2783 if ((params[0][0] == ':') && (params.size() > 1))
2785 prefix = params[0].substr(1);
2789 command = params[0].c_str();
2792 if ((!this->ctx_in) && (command == "AES"))
2794 std::string sserv = params[0];
2795 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2797 if ((x->EncryptionKey != "") && (x->Name == sserv))
2799 this->InitAES(x->EncryptionKey,sserv);
2805 else if ((this->ctx_in) && (command == "AES"))
2807 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());
2810 switch (this->LinkState)
2815 // Waiting for SERVER command from remote server. Server initiating
2816 // the connection sends the first SERVER command, listening server
2817 // replies with theirs if its happy, then if the initiator is happy,
2818 // it starts to send its net sync, which starts the merge, otherwise
2819 // it sends an ERROR.
2820 if (command == "PASS")
2822 /* Silently ignored */
2824 else if (command == "SERVER")
2826 return this->Inbound_Server(params);
2828 else if (command == "ERROR")
2830 return this->Error(params);
2832 else if (command == "USER")
2834 this->WriteLine("ERROR :Client connections to this port are prohibited.");
2837 else if (command == "CAPAB")
2839 return this->Capab(params);
2841 else if ((command == "U") || (command == "S"))
2843 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
2848 this->WriteLine("ERROR :Invalid command in negotiation phase.");
2853 // Waiting for start of other side's netmerge to say they liked our
2855 if (command == "SERVER")
2857 // cant do this, they sent it to us in the WAIT_AUTH_1 state!
2861 else if ((command == "U") || (command == "S"))
2863 this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
2866 else if (command == "BURST")
2870 /* If a time stamp is provided, try and check syncronization */
2871 time_t THEM = atoi(params[0].c_str());
2872 long delta = THEM-time(NULL);
2873 if ((delta < -600) || (delta > 600))
2875 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));
2876 this->WriteLine("ERROR :Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than ten minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!");
2879 else if ((delta < -60) || (delta > 60))
2881 this->Instance->SNO->WriteToSnoMask('l',"\2WARNING\2: Your clocks are out by %d seconds, please consider synching your clocks.",abs(delta));
2884 this->LinkState = CONNECTED;
2885 Node = new TreeServer(this->Instance,InboundServerName,InboundDescription,TreeRoot,this);
2886 TreeRoot->AddChild(Node);
2888 params.push_back(InboundServerName);
2889 params.push_back("*");
2890 params.push_back("1");
2891 params.push_back(":"+InboundDescription);
2892 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,InboundServerName);
2893 this->bursting = true;
2894 this->DoBurst(Node);
2896 else if (command == "ERROR")
2898 return this->Error(params);
2900 else if (command == "CAPAB")
2902 return this->Capab(params);
2907 this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
2911 if (command == "SERVER")
2913 // another server we connected to, which was in WAIT_AUTH_1 state,
2914 // has just sent us their credentials. If we get this far, theyre
2915 // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
2916 // if we're happy with this, we should send our netburst which
2917 // kickstarts the merge.
2918 return this->Outbound_Reply_Server(params);
2920 else if (command == "ERROR")
2922 return this->Error(params);
2926 // This is the 'authenticated' state, when all passwords
2927 // have been exchanged and anything past this point is taken
2932 std::string direction = prefix;
2933 userrec* t = this->Instance->FindNick(prefix);
2936 direction = t->server;
2938 TreeServer* route_back_again = BestRouteTo(direction);
2939 if ((!route_back_again) || (route_back_again->GetSocket() != this))
2941 if (route_back_again)
2942 Instance->Log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
2947 * When there is activity on the socket, reset the ping counter so
2948 * that we're not wasting bandwidth pinging an active server.
2950 route_back_again->SetNextPingTime(time(NULL) + 60);
2951 route_back_again->SetPingFlag();
2954 if (command == "SVSMODE")
2956 /* Services expects us to implement
2957 * SVSMODE. In inspircd its the same as
2962 std::string target = "";
2963 /* Yes, know, this is a mess. Its reasonably fast though as we're
2964 * working with std::string here.
2966 if ((command == "NICK") && (params.size() > 1))
2968 return this->IntroduceClient(prefix,params);
2970 else if (command == "FJOIN")
2972 return this->ForceJoin(prefix,params);
2974 else if (command == "STATS")
2976 return this->Stats(prefix, params);
2978 else if (command == "MOTD")
2980 return this->Motd(prefix, params);
2982 else if (command == "ADMIN")
2984 return this->Admin(prefix, params);
2986 else if (command == "SERVER")
2988 return this->RemoteServer(prefix,params);
2990 else if (command == "ERROR")
2992 return this->Error(params);
2994 else if (command == "OPERTYPE")
2996 return this->OperType(prefix,params);
2998 else if (command == "FMODE")
3000 return this->ForceMode(prefix,params);
3002 else if (command == "KILL")
3004 return this->RemoteKill(prefix,params);
3006 else if (command == "FTOPIC")
3008 return this->ForceTopic(prefix,params);
3010 else if (command == "REHASH")
3012 return this->RemoteRehash(prefix,params);
3014 else if (command == "METADATA")
3016 return this->MetaData(prefix,params);
3018 else if (command == "PING")
3021 * We just got a ping from a server that's bursting.
3022 * This can't be right, so set them to not bursting, and
3023 * apply their lines.
3027 this->bursting = false;
3028 Instance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
3032 prefix = this->GetName();
3034 return this->LocalPing(prefix,params);
3036 else if (command == "PONG")
3039 * We just got a pong from a server that's bursting.
3040 * This can't be right, so set them to not bursting, and
3041 * apply their lines.
3045 this->bursting = false;
3046 Instance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
3050 prefix = this->GetName();
3052 return this->LocalPong(prefix,params);
3054 else if (command == "VERSION")
3056 return this->ServerVersion(prefix,params);
3058 else if (command == "FHOST")
3060 return this->ChangeHost(prefix,params);
3062 else if (command == "FNAME")
3064 return this->ChangeName(prefix,params);
3066 else if (command == "ADDLINE")
3068 return this->AddLine(prefix,params);
3070 else if (command == "SVSNICK")
3074 prefix = this->GetName();
3076 return this->ForceNick(prefix,params);
3078 else if (command == "IDLE")
3080 return this->Whois(prefix,params);
3082 else if (command == "PUSH")
3084 return this->Push(prefix,params);
3086 else if (command == "TIME")
3088 return this->Time(prefix,params);
3090 else if ((command == "KICK") && (IsServer(prefix)))
3092 std::string sourceserv = this->myhost;
3093 if (params.size() == 3)
3095 userrec* user = this->Instance->FindNick(params[1]);
3096 chanrec* chan = this->Instance->FindChan(params[0]);
3099 if (!chan->ServerKickUser(user, params[2].c_str(), false))
3100 /* Yikes, the channels gone! */
3104 if (this->InboundServerName != "")
3106 sourceserv = this->InboundServerName;
3108 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
3110 else if (command == "SVSJOIN")
3114 prefix = this->GetName();
3116 return this->ServiceJoin(prefix,params);
3118 else if (command == "SQUIT")
3120 if (params.size() == 2)
3122 this->Squit(FindServer(params[0]),params[1]);
3126 else if (command == "ENDBURST")
3128 this->bursting = false;
3129 Instance->XLines->apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
3130 std::string sourceserv = this->myhost;
3131 if (this->InboundServerName != "")
3133 sourceserv = this->InboundServerName;
3135 this->Instance->SNO->WriteToSnoMask('l',"Received end of netburst from \2%s\2",sourceserv.c_str());
3140 // not a special inter-server command.
3141 // Emulate the actual user doing the command,
3142 // this saves us having a huge ugly parser.
3143 userrec* who = this->Instance->FindNick(prefix);
3144 std::string sourceserv = this->myhost;
3145 if (this->InboundServerName != "")
3147 sourceserv = this->InboundServerName;
3151 if ((command == "NICK") && (params.size() > 0))
3153 /* On nick messages, check that the nick doesnt
3154 * already exist here. If it does, kill their copy,
3157 userrec* x = this->Instance->FindNick(params[0]);
3158 if ((x) && (x != who))
3160 std::deque<std::string> p;
3161 p.push_back(params[0]);
3162 p.push_back("Nickname collision ("+prefix+" -> "+params[0]+")");
3163 DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
3165 p.push_back(prefix);
3166 p.push_back("Nickname collision");
3167 DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
3168 userrec::QuitUser(this->Instance,x,"Nickname collision ("+prefix+" -> "+params[0]+")");
3169 userrec* y = this->Instance->FindNick(prefix);
3172 userrec::QuitUser(this->Instance,y,"Nickname collision");
3174 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
3178 target = who->server;
3179 const char* strparams[127];
3180 for (unsigned int q = 0; q < params.size(); q++)
3182 strparams[q] = params[q].c_str();
3184 switch (this->Instance->CallCommandHandler(command.c_str(), strparams, params.size(), who))
3187 this->WriteLine("ERROR :Unrecognised command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules");
3194 /* CMD_SUCCESS and CMD_USER_DELETED fall through here */
3200 // its not a user. Its either a server, or somethings screwed up.
3201 if (IsServer(prefix))
3203 target = this->Instance->Config->ServerName;
3207 Instance->Log(DEBUG,"Command with unknown origin '%s'",prefix.c_str());
3211 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
3220 virtual std::string GetName()
3222 std::string sourceserv = this->myhost;
3223 if (this->InboundServerName != "")
3225 sourceserv = this->InboundServerName;
3230 virtual void OnTimeout()
3232 if (this->LinkState == CONNECTING)
3234 this->Instance->SNO->WriteToSnoMask('l',"CONNECT: Connection to \002"+myhost+"\002 timed out.");
3235 Link* MyLink = FindLink(myhost);
3241 virtual void OnClose()
3243 // Connection closed.
3244 // If the connection is fully up (state CONNECTED)
3245 // then propogate a netsplit to all peers.
3246 std::string quitserver = this->myhost;
3247 if (this->InboundServerName != "")
3249 quitserver = this->InboundServerName;
3251 TreeServer* s = FindServer(quitserver);
3254 Squit(s,"Remote host closed the connection");
3256 this->Instance->SNO->WriteToSnoMask('l',"Connection to '\2%s\2' failed.",quitserver.c_str());
3259 virtual int OnIncomingConnection(int newsock, char* ip)
3261 /* To prevent anyone from attempting to flood opers/DDoS by connecting to the server port,
3262 * or discovering if this port is the server port, we don't allow connections from any
3263 * IPs for which we don't have a link block.
3267 found = (std::find(ValidIPs.begin(), ValidIPs.end(), ip) != ValidIPs.end());
3270 for (vector<std::string>::iterator i = ValidIPs.begin(); i != ValidIPs.end(); i++)
3271 if (MatchCIDR(ip, (*i).c_str()))
3276 this->Instance->SNO->WriteToSnoMask('l',"Server connection from %s denied (no link blocks with that IP address)", ip);
3281 TreeSocket* s = new TreeSocket(this->Instance, newsock, ip);
3282 s = s; /* Whinge whinge whinge, thats all GCC ever does. */
3287 /** This class is used to resolve server hostnames during /connect and autoconnect.
3288 * As of 1.1, the resolver system is seperated out from InspSocket, so we must do this
3289 * resolver step first ourselves if we need it. This is totally nonblocking, and will
3290 * callback to OnLookupComplete or OnError when completed. Once it has completed we
3291 * will have an IP address which we can then use to continue our connection.
3293 class ServernameResolver : public Resolver
3296 /** A copy of the Link tag info for what we're connecting to.
3297 * We take a copy, rather than using a pointer, just in case the
3298 * admin takes the tag away and rehashes while the domain is resolving.
3302 ServernameResolver(InspIRCd* Instance, const std::string &hostname, Link x) : Resolver(Instance, hostname, DNS_QUERY_FORWARD), MyLink(x)
3304 /* Nothing in here, folks */
3307 void OnLookupComplete(const std::string &result)
3309 /* Initiate the connection, now that we have an IP to use.
3310 * Passing a hostname directly to InspSocket causes it to
3311 * just bail and set its FD to -1.
3313 TreeServer* CheckDupe = FindServer(MyLink.Name.c_str());
3314 if (!CheckDupe) /* Check that nobody tried to connect it successfully while we were resolving */
3316 TreeSocket* newsocket = new TreeSocket(ServerInstance, result,MyLink.Port,false,10,MyLink.Name.c_str());
3317 if (newsocket->GetFd() > -1)
3323 /* Something barfed, show the opers */
3324 ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",MyLink.Name.c_str(),strerror(errno));
3326 DoFailOver(&MyLink);
3331 void OnError(ResolverError e, const std::string &errormessage)
3334 ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: Unable to resolve hostname - %s",MyLink.Name.c_str(),errormessage.c_str());
3335 DoFailOver(&MyLink);
3339 class SecurityIPResolver : public Resolver
3344 SecurityIPResolver(InspIRCd* Instance, const std::string &hostname, Link x) : Resolver(Instance, hostname, DNS_QUERY_FORWARD), MyLink(x)
3348 void OnLookupComplete(const std::string &result)
3350 ServerInstance->Log(DEBUG,"Security IP cache: Adding IP address '%s' for Link '%s'",result.c_str(),MyLink.Name.c_str());
3351 ValidIPs.push_back(result);
3354 void OnError(ResolverError e, const std::string &errormessage)
3356 ServerInstance->Log(DEBUG,"Could not resolve IP associated with Link '%s': %s",MyLink.Name.c_str(),errormessage.c_str());
3360 void AddThisServer(TreeServer* server, std::deque<TreeServer*> &list)
3362 for (unsigned int c = 0; c < list.size(); c++)
3364 if (list[c] == server)
3369 list.push_back(server);
3372 /** returns a list of DIRECT servernames for a specific channel */
3373 void GetListOfServersForChannel(chanrec* c, std::deque<TreeServer*> &list)
3375 CUList *ulist = c->GetUsers();
3376 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
3378 if (i->second->GetFd() < 0)
3380 TreeServer* best = BestRouteTo(i->second->server);
3382 AddThisServer(best,list);
3388 bool DoOneToAllButSenderRaw(std::string data, std::string omit, std::string prefix, irc::string command, std::deque<std::string> ¶ms)
3390 TreeServer* omitroute = BestRouteTo(omit);
3391 if ((command == "NOTICE") || (command == "PRIVMSG"))
3393 if (params.size() >= 2)
3396 if ((*(params[0].c_str()) == '@') || (*(params[0].c_str()) == '%') || (*(params[0].c_str()) == '+'))
3398 params[0] = params[0].substr(1, params[0].length()-1);
3400 if ((*(params[0].c_str()) != '#') && (*(params[0].c_str()) != '$'))
3402 // special routing for private messages/notices
3403 userrec* d = ServerInstance->FindNick(params[0]);
3406 std::deque<std::string> par;
3407 par.push_back(params[0]);
3408 par.push_back(":"+params[1]);
3409 DoOneToOne(prefix,command.c_str(),par,d->server);
3413 else if (*(params[0].c_str()) == '$')
3415 std::deque<std::string> par;
3416 par.push_back(params[0]);
3417 par.push_back(":"+params[1]);
3418 DoOneToAllButSender(prefix,command.c_str(),par,omitroute->GetName());
3423 ServerInstance->Log(DEBUG,"Channel privmsg going to chan %s",params[0].c_str());
3424 chanrec* c = ServerInstance->FindChan(params[0]);
3427 std::deque<TreeServer*> list;
3428 GetListOfServersForChannel(c,list);
3429 ServerInstance->Log(DEBUG,"Got a list of %d servers",list.size());
3430 unsigned int lsize = list.size();
3431 for (unsigned int i = 0; i < lsize; i++)
3433 TreeSocket* Sock = list[i]->GetSocket();
3434 if ((Sock) && (list[i]->GetName() != omit) && (omitroute != list[i]))
3436 ServerInstance->Log(DEBUG,"Writing privmsg to server %s",list[i]->GetName().c_str());
3437 Sock->WriteLine(data);
3445 unsigned int items = TreeRoot->ChildCount();
3446 for (unsigned int x = 0; x < items; x++)
3448 TreeServer* Route = TreeRoot->GetChild(x);
3449 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
3451 TreeSocket* Sock = Route->GetSocket();
3453 Sock->WriteLine(data);
3459 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string omit)
3461 TreeServer* omitroute = BestRouteTo(omit);
3462 std::string FullLine = ":" + prefix + " " + command;
3463 unsigned int words = params.size();
3464 for (unsigned int x = 0; x < words; x++)
3466 FullLine = FullLine + " " + params[x];
3468 unsigned int items = TreeRoot->ChildCount();
3469 for (unsigned int x = 0; x < items; x++)
3471 TreeServer* Route = TreeRoot->GetChild(x);
3472 // Send the line IF:
3473 // The route has a socket (its a direct connection)
3474 // The route isnt the one to be omitted
3475 // The route isnt the path to the one to be omitted
3476 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
3478 TreeSocket* Sock = Route->GetSocket();
3480 Sock->WriteLine(FullLine);
3486 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> ¶ms)
3488 std::string FullLine = ":" + prefix + " " + command;
3489 unsigned int words = params.size();
3490 for (unsigned int x = 0; x < words; x++)
3492 FullLine = FullLine + " " + params[x];
3494 unsigned int items = TreeRoot->ChildCount();
3495 for (unsigned int x = 0; x < items; x++)
3497 TreeServer* Route = TreeRoot->GetChild(x);
3498 if (Route && Route->GetSocket())
3500 TreeSocket* Sock = Route->GetSocket();
3502 Sock->WriteLine(FullLine);
3508 bool DoOneToMany(const char* prefix, const char* command, std::deque<std::string> ¶ms)
3510 std::string spfx = prefix;
3511 std::string scmd = command;
3512 return DoOneToMany(spfx, scmd, params);
3515 bool DoOneToAllButSender(const char* prefix, const char* command, std::deque<std::string> ¶ms, std::string omit)
3517 std::string spfx = prefix;
3518 std::string scmd = command;
3519 return DoOneToAllButSender(spfx, scmd, params, omit);
3522 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> ¶ms, std::string target)
3524 TreeServer* Route = BestRouteTo(target);
3527 std::string FullLine = ":" + prefix + " " + command;
3528 unsigned int words = params.size();
3529 for (unsigned int x = 0; x < words; x++)
3531 FullLine = FullLine + " " + params[x];
3533 if (Route && Route->GetSocket())
3535 TreeSocket* Sock = Route->GetSocket();
3537 Sock->WriteLine(FullLine);
3547 std::vector<TreeSocket*> Bindings;
3549 void ReadConfiguration(bool rebind)
3551 Conf = new ConfigReader(ServerInstance);
3554 for (int j =0; j < Conf->Enumerate("bind"); j++)
3556 std::string Type = Conf->ReadValue("bind","type",j);
3557 std::string IP = Conf->ReadValue("bind","address",j);
3558 long Port = Conf->ReadInteger("bind","port",j,true);
3559 if (Type == "servers")
3565 TreeSocket* listener = new TreeSocket(ServerInstance, IP.c_str(),Port,true,10);
3566 if (listener->GetState() == I_LISTENING)
3568 Bindings.push_back(listener);
3572 ServerInstance->Log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port %d",Port);
3579 FlatLinks = Conf->ReadFlag("options","flatlinks",0);
3580 HideULines = Conf->ReadFlag("options","hideulines",0);
3583 for (int j =0; j < Conf->Enumerate("link"); j++)
3586 std::string Allow = Conf->ReadValue("link","allowmask",j);
3587 L.Name = (Conf->ReadValue("link","name",j)).c_str();
3588 L.IPAddr = Conf->ReadValue("link","ipaddr",j);
3589 L.FailOver = Conf->ReadValue("link","failover",j).c_str();
3590 L.Port = Conf->ReadInteger("link","port",j,true);
3591 L.SendPass = Conf->ReadValue("link","sendpass",j);
3592 L.RecvPass = Conf->ReadValue("link","recvpass",j);
3593 L.AutoConnect = Conf->ReadInteger("link","autoconnect",j,true);
3594 L.EncryptionKey = Conf->ReadValue("link","encryptionkey",j);
3595 L.HiddenFromStats = Conf->ReadFlag("link","hidden",j);
3596 L.NextConnectTime = time(NULL) + L.AutoConnect;
3597 /* Bugfix by brain, do not allow people to enter bad configurations */
3598 if (L.Name != ServerInstance->Config->ServerName)
3600 if ((L.IPAddr != "") && (L.RecvPass != "") && (L.SendPass != "") && (L.Name != "") && (L.Port))
3602 ValidIPs.push_back(L.IPAddr);
3605 ValidIPs.push_back(Allow);
3607 /* Needs resolving */
3609 if (insp_aton(L.IPAddr.c_str(), &binip) < 1)
3613 SecurityIPResolver* sr = new SecurityIPResolver(ServerInstance, L.IPAddr, L);
3614 ServerInstance->AddResolver(sr);
3616 catch (ModuleException& e)
3618 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
3622 LinkBlocks.push_back(L);
3623 ServerInstance->Log(DEBUG,"m_spanningtree: Read server %s with host %s:%d",L.Name.c_str(),L.IPAddr.c_str(),L.Port);
3629 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', IP address not defined!",L.Name.c_str());
3631 else if (L.RecvPass == "")
3633 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', recvpass not defined!",L.Name.c_str());
3635 else if (L.SendPass == "")
3637 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', sendpass not defined!",L.Name.c_str());
3639 else if (L.Name == "")
3641 ServerInstance->Log(DEFAULT,"Invalid configuration, link tag without a name!");
3645 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', no port specified!",L.Name.c_str());
3651 ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', link tag has the same server name as the local server!",L.Name.c_str());
3658 class ModuleSpanningTree : public Module
3660 std::vector<TreeSocket*> Bindings;
3663 unsigned int max_local;
3664 unsigned int max_global;
3665 cmd_rconnect* command_rconnect;
3669 ModuleSpanningTree(InspIRCd* Me)
3670 : Module::Module(Me), max_local(0), max_global(0)
3675 ::ServerInstance = Me;
3677 // Create the root of the tree
3678 TreeRoot = new TreeServer(ServerInstance, ServerInstance->Config->ServerName, ServerInstance->Config->ServerDesc);
3680 ReadConfiguration(true);
3682 command_rconnect = new cmd_rconnect(ServerInstance, this);
3683 ServerInstance->AddCommand(command_rconnect);
3686 void ShowLinks(TreeServer* Current, userrec* user, int hops)
3688 std::string Parent = TreeRoot->GetName();
3689 if (Current->GetParent())
3691 Parent = Current->GetParent()->GetName();
3693 for (unsigned int q = 0; q < Current->ChildCount(); q++)
3695 if ((HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str())))
3699 ShowLinks(Current->GetChild(q),user,hops+1);
3704 ShowLinks(Current->GetChild(q),user,hops+1);
3707 /* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */
3708 if ((HideULines) && (ServerInstance->ULine(Current->GetName().c_str())) && (!*user->oper))
3710 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());
3713 int CountLocalServs()
3715 return TreeRoot->ChildCount();
3720 return serverlist.size();
3723 void HandleLinks(const char** parameters, int pcnt, userrec* user)
3725 ShowLinks(TreeRoot,user,0);
3726 user->WriteServ("365 %s * :End of /LINKS list.",user->nick);
3730 void HandleLusers(const char** parameters, int pcnt, userrec* user)
3732 unsigned int n_users = ServerInstance->UserCount();
3734 /* Only update these when someone wants to see them, more efficient */
3735 if ((unsigned int)ServerInstance->LocalUserCount() > max_local)
3736 max_local = ServerInstance->LocalUserCount();
3737 if (n_users > max_global)
3738 max_global = n_users;
3740 user->WriteServ("251 %s :There are %d users and %d invisible on %d servers",user->nick,n_users-ServerInstance->InvisibleUserCount(),ServerInstance->InvisibleUserCount(),this->CountServs());
3741 if (ServerInstance->OperCount())
3742 user->WriteServ("252 %s %d :operator(s) online",user->nick,ServerInstance->OperCount());
3743 if (ServerInstance->UnregisteredUserCount())
3744 user->WriteServ("253 %s %d :unknown connections",user->nick,ServerInstance->UnregisteredUserCount());
3745 if (ServerInstance->ChannelCount())
3746 user->WriteServ("254 %s %d :channels formed",user->nick,ServerInstance->ChannelCount());
3747 user->WriteServ("254 %s :I have %d clients and %d servers",user->nick,ServerInstance->LocalUserCount(),this->CountLocalServs());
3748 user->WriteServ("265 %s :Current Local Users: %d Max: %d",user->nick,ServerInstance->LocalUserCount(),max_local);
3749 user->WriteServ("266 %s :Current Global Users: %d Max: %d",user->nick,n_users,max_global);
3753 // WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS.
3755 void ShowMap(TreeServer* Current, userrec* user, int depth, char matrix[128][80], float &totusers, float &totservers)
3759 for (int t = 0; t < depth; t++)
3761 matrix[line][t] = ' ';
3764 // For Aligning, we need to work out exactly how deep this thing is, and produce
3765 // a 'Spacer' String to compensate.
3768 memset(spacer,' ',40);
3769 if ((40 - Current->GetName().length() - depth) > 1) {
3770 spacer[40 - Current->GetName().length() - depth] = '\0';
3779 if (ServerInstance->clientlist.size() == 0) {
3780 // If there are no users, WHO THE HELL DID THE /MAP?!?!?!
3785 percent = ((float)Current->GetUserCount() / (float)ServerInstance->clientlist.size()) * 100;
3787 snprintf(text, 80, "%s %s%5d [%5.2f%%]", Current->GetName().c_str(), spacer, Current->GetUserCount(), percent);
3788 totusers += Current->GetUserCount();
3790 strlcpy(&matrix[line][depth],text,80);
3792 for (unsigned int q = 0; q < Current->ChildCount(); q++)
3794 if ((HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str())))
3798 ShowMap(Current->GetChild(q),user,(FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers);
3803 ShowMap(Current->GetChild(q),user,(FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers);
3809 int HandleMotd(const char** parameters, int pcnt, userrec* user)
3813 /* Remote MOTD, the server is within the 1st parameter */
3814 std::deque<std::string> params;
3815 params.push_back(parameters[0]);
3817 /* Send it out remotely, generate no reply yet */
3818 TreeServer* s = FindServerMask(parameters[0]);
3821 DoOneToOne(user->nick, "MOTD", params, s->GetName());
3825 user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]);
3832 int HandleAdmin(const char** parameters, int pcnt, userrec* user)
3836 /* Remote ADMIN, the server is within the 1st parameter */
3837 std::deque<std::string> params;
3838 params.push_back(parameters[0]);
3840 /* Send it out remotely, generate no reply yet */
3841 TreeServer* s = FindServerMask(parameters[0]);
3844 DoOneToOne(user->nick, "ADMIN", params, s->GetName());
3848 user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]);
3855 int HandleStats(const char** parameters, int pcnt, userrec* user)
3859 /* Remote STATS, the server is within the 2nd parameter */
3860 std::deque<std::string> params;
3861 params.push_back(parameters[0]);
3862 params.push_back(parameters[1]);
3863 /* Send it out remotely, generate no reply yet */
3864 TreeServer* s = FindServerMask(parameters[1]);
3867 params[1] = s->GetName();
3868 DoOneToOne(user->nick, "STATS", params, s->GetName());
3872 user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]);
3879 // Ok, prepare to be confused.
3880 // After much mulling over how to approach this, it struck me that
3881 // the 'usual' way of doing a /MAP isnt the best way. Instead of
3882 // keeping track of a ton of ascii characters, and line by line
3883 // under recursion working out where to place them using multiplications
3884 // and divisons, we instead render the map onto a backplane of characters
3885 // (a character matrix), then draw the branches as a series of "L" shapes
3886 // from the nodes. This is not only friendlier on CPU it uses less stack.
3888 void HandleMap(const char** parameters, int pcnt, userrec* user)
3890 // This array represents a virtual screen which we will
3891 // "scratch" draw to, as the console device of an irc
3892 // client does not provide for a proper terminal.
3894 float totservers = 0;
3895 char matrix[128][80];
3896 for (unsigned int t = 0; t < 128; t++)
3898 matrix[t][0] = '\0';
3901 // The only recursive bit is called here.
3902 ShowMap(TreeRoot,user,0,matrix,totusers,totservers);
3903 // Process each line one by one. The algorithm has a limit of
3904 // 128 servers (which is far more than a spanning tree should have
3905 // anyway, so we're ok). This limit can be raised simply by making
3906 // the character matrix deeper, 128 rows taking 10k of memory.
3907 for (int l = 1; l < line; l++)
3909 // scan across the line looking for the start of the
3910 // servername (the recursive part of the algorithm has placed
3911 // the servers at indented positions depending on what they
3913 int first_nonspace = 0;
3914 while (matrix[l][first_nonspace] == ' ')
3919 // Draw the `- (corner) section: this may be overwritten by
3920 // another L shape passing along the same vertical pane, becoming
3921 // a |- (branch) section instead.
3922 matrix[l][first_nonspace] = '-';
3923 matrix[l][first_nonspace-1] = '`';
3925 // Draw upwards until we hit the parent server, causing possibly
3926 // other corners (`-) to become branches (|-)
3927 while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`'))
3929 matrix[l2][first_nonspace-1] = '|';
3933 // dump the whole lot to the user. This is the easy bit, honest.
3934 for (int t = 0; t < line; t++)
3936 user->WriteServ("006 %s :%s",user->nick,&matrix[t][0]);
3938 float avg_users = totusers / totservers;
3939 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);
3940 user->WriteServ("007 %s :End of /MAP",user->nick);
3944 int HandleSquit(const char** parameters, int pcnt, userrec* user)
3946 TreeServer* s = FindServerMask(parameters[0]);
3951 user->WriteServ("NOTICE %s :*** SQUIT: Foolish mortal, you cannot make a server SQUIT itself! (%s matches local server name)",user->nick,parameters[0]);
3954 TreeSocket* sock = s->GetSocket();
3957 ServerInstance->Log(DEBUG,"Splitting server %s",s->GetName().c_str());
3958 ServerInstance->SNO->WriteToSnoMask('l',"SQUIT: Server \002%s\002 removed from network by %s",parameters[0],user->nick);
3959 sock->Squit(s,"Server quit by "+std::string(user->nick)+"!"+std::string(user->ident)+"@"+std::string(user->host));
3960 ServerInstance->SE->DelFd(sock);
3966 user->WriteServ("NOTICE %s :*** SQUIT: The server \002%s\002 is not directly connected.",user->nick,parameters[0]);
3971 user->WriteServ("NOTICE %s :*** SQUIT: The server \002%s\002 does not exist on the network.",user->nick,parameters[0]);
3976 int HandleTime(const char** parameters, int pcnt, userrec* user)
3978 if ((IS_LOCAL(user)) && (pcnt))
3980 TreeServer* found = FindServerMask(parameters[0]);
3983 // we dont' override for local server
3984 if (found == TreeRoot)
3987 std::deque<std::string> params;
3988 params.push_back(found->GetName());
3989 params.push_back(user->nick);
3990 DoOneToOne(ServerInstance->Config->ServerName,"TIME",params,found->GetName());
3994 user->WriteServ("402 %s %s :No such server",user->nick,parameters[0]);
4000 int HandleRemoteWhois(const char** parameters, int pcnt, userrec* user)
4002 if ((IS_LOCAL(user)) && (pcnt > 1))
4004 userrec* remote = ServerInstance->FindNick(parameters[1]);
4005 if ((remote) && (remote->GetFd() < 0))
4007 std::deque<std::string> params;
4008 params.push_back(parameters[1]);
4009 DoOneToOne(user->nick,"IDLE",params,remote->server);
4014 user->WriteServ("401 %s %s :No such nick/channel",user->nick, parameters[1]);
4015 user->WriteServ("318 %s %s :End of /WHOIS list.",user->nick, parameters[1]);
4022 void DoPingChecks(time_t curtime)
4024 for (unsigned int j = 0; j < TreeRoot->ChildCount(); j++)
4026 TreeServer* serv = TreeRoot->GetChild(j);
4027 TreeSocket* sock = serv->GetSocket();
4030 if (curtime >= serv->NextPingTime())
4032 if (serv->AnsweredLastPing())
4034 sock->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" PING "+serv->GetName());
4035 serv->SetNextPingTime(curtime + 60);
4039 // they didnt answer, boot them
4040 ServerInstance->SNO->WriteToSnoMask('l',"Server \002%s\002 pinged out",serv->GetName().c_str());
4041 sock->Squit(serv,"Ping timeout");
4042 ServerInstance->SE->DelFd(sock);
4052 void ConnectServer(Link* x)
4056 /* Do we already have an IP? If so, no need to resolve it. */
4057 if (insp_aton(x->IPAddr.c_str(), &binip) > 0)
4059 TreeSocket* newsocket = new TreeSocket(ServerInstance, x->IPAddr,x->Port,false,10,x->Name.c_str());
4060 if (newsocket->GetFd() > -1)
4062 /* Handled automatically on success */
4066 ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(),strerror(errno));
4068 this->DoFailOver(x);
4075 ServernameResolver* snr = new ServernameResolver(ServerInstance,x->IPAddr, *x);
4076 ServerInstance->AddResolver(snr);
4078 catch (ModuleException& e)
4080 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
4081 this->DoFailOver(x);
4086 void DoFailOver(Link* x)
4088 if (x->FailOver.length())
4090 if (x->FailOver == x->Name)
4092 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());
4095 Link* TryThisOne = this->FindLink(x->FailOver.c_str());
4098 ServerInstance->SNO->WriteToSnoMask('l',"FAILOVER: Trying failover link for \002%s\002: \002%s\002...", x->Name.c_str(), TryThisOne->Name.c_str());
4099 ConnectServer(TryThisOne);
4103 ServerInstance->SNO->WriteToSnoMask('l',"FAILOVER: Invalid failover server specified for server \002%s\002, will not follow!", x->Name.c_str());
4108 Link* FindLink(const std::string& name)
4110 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
4112 if (ServerInstance->MatchText(x->Name.c_str(), name.c_str()))
4120 void AutoConnectServers(time_t curtime)
4122 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
4124 if ((x->AutoConnect) && (curtime >= x->NextConnectTime))
4126 ServerInstance->Log(DEBUG,"Auto-Connecting %s",x->Name.c_str());
4127 x->NextConnectTime = curtime + x->AutoConnect;
4128 TreeServer* CheckDupe = FindServer(x->Name.c_str());
4129 if (x->FailOver.length())
4131 TreeServer* CheckFailOver = FindServer(x->FailOver.c_str());
4134 /* The failover for this server is currently a member of the network.
4135 * The failover probably succeeded, where the main link did not.
4136 * Don't try the main link until the failover is gone again.
4143 // an autoconnected server is not connected. Check if its time to connect it
4144 ServerInstance->SNO->WriteToSnoMask('l',"AUTOCONNECT: Auto-connecting server \002%s\002 (%lu seconds until next attempt)",x->Name.c_str(),x->AutoConnect);
4145 this->ConnectServer(&(*x));
4151 int HandleVersion(const char** parameters, int pcnt, userrec* user)
4153 // we've already checked if pcnt > 0, so this is safe
4154 TreeServer* found = FindServerMask(parameters[0]);
4157 std::string Version = found->GetVersion();
4158 user->WriteServ("351 %s :%s",user->nick,Version.c_str());
4159 if (found == TreeRoot)
4161 std::stringstream out(ServerInstance->Config->data005);
4162 std::string token = "";
4163 std::string line5 = "";
4164 int token_counter = 0;
4169 line5 = line5 + token + " ";
4172 if ((token_counter >= 13) || (out.eof() == true))
4174 user->WriteServ("005 %s %s:are supported by this server",user->nick,line5.c_str());
4183 user->WriteServ("402 %s %s :No such server",user->nick,parameters[0]);
4188 int HandleConnect(const char** parameters, int pcnt, userrec* user)
4190 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
4192 if (ServerInstance->MatchText(x->Name.c_str(),parameters[0]))
4194 TreeServer* CheckDupe = FindServer(x->Name.c_str());
4197 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);
4198 ConnectServer(&(*x));
4203 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());
4208 user->WriteServ("NOTICE %s :*** CONNECT: No server matching \002%s\002 could be found in the config file.",user->nick,parameters[0]);
4212 virtual int OnStats(char statschar, userrec* user, string_list &results)
4214 if (statschar == 'c')
4216 for (unsigned int i = 0; i < LinkBlocks.size(); i++)
4218 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');
4219 results.push_back(std::string(ServerInstance->Config->ServerName)+" 244 "+user->nick+" H * * "+LinkBlocks[i].Name.c_str());
4221 results.push_back(std::string(ServerInstance->Config->ServerName)+" 219 "+user->nick+" "+statschar+" :End of /STATS report");
4222 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);
4228 virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, bool validated, const std::string &original_line)
4230 /* If the command doesnt appear to be valid, we dont want to mess with it. */
4234 if (command == "CONNECT")
4236 return this->HandleConnect(parameters,pcnt,user);
4238 else if (command == "STATS")
4240 return this->HandleStats(parameters,pcnt,user);
4242 else if (command == "MOTD")
4244 return this->HandleMotd(parameters,pcnt,user);
4246 else if (command == "ADMIN")
4248 return this->HandleAdmin(parameters,pcnt,user);
4250 else if (command == "SQUIT")
4252 return this->HandleSquit(parameters,pcnt,user);
4254 else if (command == "MAP")
4256 this->HandleMap(parameters,pcnt,user);
4259 else if ((command == "TIME") && (pcnt > 0))
4261 return this->HandleTime(parameters,pcnt,user);
4263 else if (command == "LUSERS")
4265 this->HandleLusers(parameters,pcnt,user);
4268 else if (command == "LINKS")
4270 this->HandleLinks(parameters,pcnt,user);
4273 else if (command == "WHOIS")
4278 return this->HandleRemoteWhois(parameters,pcnt,user);
4281 else if ((command == "VERSION") && (pcnt > 0))
4283 this->HandleVersion(parameters,pcnt,user);
4290 virtual void OnPostCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, CmdResult result, const std::string &original_line)
4292 if ((result == CMD_SUCCESS) && (ServerInstance->IsValidModuleCommand(command, pcnt, user)))
4294 // this bit of code cleverly routes all module commands
4295 // to all remote severs *automatically* so that modules
4296 // can just handle commands locally, without having
4297 // to have any special provision in place for remote
4298 // commands and linking protocols.
4299 std::deque<std::string> params;
4301 for (int j = 0; j < pcnt; j++)
4303 if (strchr(parameters[j],' '))
4305 params.push_back(":" + std::string(parameters[j]));
4309 params.push_back(std::string(parameters[j]));
4312 ServerInstance->Log(DEBUG,"Globally route '%s'",command.c_str());
4313 DoOneToMany(user->nick,command,params);
4317 virtual void OnGetServerDescription(const std::string &servername,std::string &description)
4319 TreeServer* s = FindServer(servername);
4322 description = s->GetDesc();
4326 virtual void OnUserInvite(userrec* source,userrec* dest,chanrec* channel)
4328 if (IS_LOCAL(source))
4330 std::deque<std::string> params;
4331 params.push_back(dest->nick);
4332 params.push_back(channel->name);
4333 DoOneToMany(source->nick,"INVITE",params);
4337 virtual void OnPostLocalTopicChange(userrec* user, chanrec* chan, const std::string &topic)
4339 std::deque<std::string> params;
4340 params.push_back(chan->name);
4341 params.push_back(":"+topic);
4342 DoOneToMany(user->nick,"TOPIC",params);
4345 virtual void OnWallops(userrec* user, const std::string &text)
4349 std::deque<std::string> params;
4350 params.push_back(":"+text);
4351 DoOneToMany(user->nick,"WALLOPS",params);
4355 virtual void OnUserNotice(userrec* user, void* dest, int target_type, const std::string &text, char status)
4357 if (target_type == TYPE_USER)
4359 userrec* d = (userrec*)dest;
4360 if ((d->GetFd() < 0) && (IS_LOCAL(user)))
4362 std::deque<std::string> params;
4364 params.push_back(d->nick);
4365 params.push_back(":"+text);
4366 DoOneToOne(user->nick,"NOTICE",params,d->server);
4369 else if (target_type == TYPE_CHANNEL)
4373 chanrec *c = (chanrec*)dest;
4376 std::string cname = c->name;
4378 cname = status + cname;
4379 std::deque<TreeServer*> list;
4380 GetListOfServersForChannel(c,list);
4381 unsigned int ucount = list.size();
4382 for (unsigned int i = 0; i < ucount; i++)
4384 TreeSocket* Sock = list[i]->GetSocket();
4386 Sock->WriteLine(":"+std::string(user->nick)+" NOTICE "+cname+" :"+text);
4391 else if (target_type == TYPE_SERVER)
4395 char* target = (char*)dest;
4396 std::deque<std::string> par;
4397 par.push_back(target);
4398 par.push_back(":"+text);
4399 DoOneToMany(user->nick,"NOTICE",par);
4404 virtual void OnUserMessage(userrec* user, void* dest, int target_type, const std::string &text, char status)
4406 if (target_type == TYPE_USER)
4408 // route private messages which are targetted at clients only to the server
4409 // which needs to receive them
4410 userrec* d = (userrec*)dest;
4411 if ((d->GetFd() < 0) && (IS_LOCAL(user)))
4413 std::deque<std::string> params;
4415 params.push_back(d->nick);
4416 params.push_back(":"+text);
4417 DoOneToOne(user->nick,"PRIVMSG",params,d->server);
4420 else if (target_type == TYPE_CHANNEL)
4424 chanrec *c = (chanrec*)dest;
4427 std::string cname = c->name;
4429 cname = status + cname;
4430 std::deque<TreeServer*> list;
4431 GetListOfServersForChannel(c,list);
4432 unsigned int ucount = list.size();
4433 for (unsigned int i = 0; i < ucount; i++)
4435 TreeSocket* Sock = list[i]->GetSocket();
4437 Sock->WriteLine(":"+std::string(user->nick)+" PRIVMSG "+cname+" :"+text);
4442 else if (target_type == TYPE_SERVER)
4446 char* target = (char*)dest;
4447 std::deque<std::string> par;
4448 par.push_back(target);
4449 par.push_back(":"+text);
4450 DoOneToMany(user->nick,"PRIVMSG",par);
4455 virtual void OnBackgroundTimer(time_t curtime)
4457 AutoConnectServers(curtime);
4458 DoPingChecks(curtime);
4461 virtual void OnUserJoin(userrec* user, chanrec* channel)
4463 // Only do this for local users
4467 snprintf(ts,24,"%lu",(unsigned long)channel->age);
4469 std::deque<std::string> params;
4471 params.push_back(channel->name);
4473 /** XXX: The client protocol will IGNORE this parameter.
4474 * We could make use of it if we wanted to keep the TS
4475 * in step if somehow we lose it.
4477 params.push_back(ts);
4479 if (channel->GetUserCounter() > 1)
4481 // not the first in the channel
4482 DoOneToMany(user->nick,"JOIN",params);
4486 // first in the channel, set up their permissions
4487 // and the channel TS with FJOIN.
4489 params.push_back(channel->name);
4490 params.push_back(ts);
4491 params.push_back("@,"+std::string(user->nick));
4492 DoOneToMany(ServerInstance->Config->ServerName,"FJOIN",params);
4497 virtual void OnChangeHost(userrec* user, const std::string &newhost)
4499 // only occurs for local clients
4500 if (user->registered != REG_ALL)
4502 std::deque<std::string> params;
4503 params.push_back(newhost);
4504 DoOneToMany(user->nick,"FHOST",params);
4507 virtual void OnChangeName(userrec* user, const std::string &gecos)
4509 // only occurs for local clients
4510 if (user->registered != REG_ALL)
4512 std::deque<std::string> params;
4513 params.push_back(gecos);
4514 DoOneToMany(user->nick,"FNAME",params);
4517 virtual void OnUserPart(userrec* user, chanrec* channel, const std::string &partmessage)
4521 std::deque<std::string> params;
4522 params.push_back(channel->name);
4523 if (partmessage != "")
4524 params.push_back(":"+partmessage);
4525 DoOneToMany(user->nick,"PART",params);
4529 virtual void OnUserConnect(userrec* user)
4531 char agestr[MAXBUF];
4534 std::deque<std::string> params;
4535 snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age);
4536 params.push_back(agestr);
4537 params.push_back(user->nick);
4538 params.push_back(user->host);
4539 params.push_back(user->dhost);
4540 params.push_back(user->ident);
4541 params.push_back("+"+std::string(user->FormatModes()));
4542 params.push_back(user->GetIPString());
4543 params.push_back(":"+std::string(user->fullname));
4544 DoOneToMany(ServerInstance->Config->ServerName,"NICK",params);
4546 // User is Local, change needs to be reflected!
4547 TreeServer* SourceServer = FindServer(user->server);
4550 SourceServer->AddUserCount();
4556 virtual void OnUserQuit(userrec* user, const std::string &reason)
4558 if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
4560 std::deque<std::string> params;
4561 params.push_back(":"+reason);
4562 DoOneToMany(user->nick,"QUIT",params);
4564 // Regardless, We need to modify the user Counts..
4565 TreeServer* SourceServer = FindServer(user->server);
4568 SourceServer->DelUserCount();
4573 virtual void OnUserPostNick(userrec* user, const std::string &oldnick)
4577 std::deque<std::string> params;
4578 params.push_back(user->nick);
4579 DoOneToMany(oldnick,"NICK",params);
4583 virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason)
4585 if ((source) && (IS_LOCAL(source)))
4587 std::deque<std::string> params;
4588 params.push_back(chan->name);
4589 params.push_back(user->nick);
4590 params.push_back(":"+reason);
4591 DoOneToMany(source->nick,"KICK",params);
4595 std::deque<std::string> params;
4596 params.push_back(chan->name);
4597 params.push_back(user->nick);
4598 params.push_back(":"+reason);
4599 DoOneToMany(ServerInstance->Config->ServerName,"KICK",params);
4603 virtual void OnRemoteKill(userrec* source, userrec* dest, const std::string &reason)
4605 std::deque<std::string> params;
4606 params.push_back(dest->nick);
4607 params.push_back(":"+reason);
4608 DoOneToMany(source->nick,"KILL",params);
4611 virtual void OnRehash(const std::string ¶meter)
4613 if (parameter != "")
4615 std::deque<std::string> params;
4616 params.push_back(parameter);
4617 DoOneToMany(ServerInstance->Config->ServerName,"REHASH",params);
4619 if (ServerInstance->MatchText(ServerInstance->Config->ServerName,parameter))
4621 ServerInstance->WriteOpers("*** Remote rehash initiated from server \002%s\002",ServerInstance->Config->ServerName);
4622 ServerInstance->RehashServer();
4625 ReadConfiguration(false);
4628 // note: the protocol does not allow direct umode +o except
4629 // via NICK with 8 params. sending OPERTYPE infers +o modechange
4631 virtual void OnOper(userrec* user, const std::string &opertype)
4635 std::deque<std::string> params;
4636 params.push_back(opertype);
4637 DoOneToMany(user->nick,"OPERTYPE",params);
4641 void OnLine(userrec* source, const std::string &host, bool adding, char linetype, long duration, const std::string &reason)
4643 if (IS_LOCAL(source))
4646 snprintf(type,8,"%cLINE",linetype);
4647 std::string stype = type;
4650 char sduration[MAXBUF];
4651 snprintf(sduration,MAXBUF,"%ld",duration);
4652 std::deque<std::string> params;
4653 params.push_back(host);
4654 params.push_back(sduration);
4655 params.push_back(":"+reason);
4656 DoOneToMany(source->nick,stype,params);
4660 std::deque<std::string> params;
4661 params.push_back(host);
4662 DoOneToMany(source->nick,stype,params);
4667 virtual void OnAddGLine(long duration, userrec* source, const std::string &reason, const std::string &hostmask)
4669 OnLine(source,hostmask,true,'G',duration,reason);
4672 virtual void OnAddZLine(long duration, userrec* source, const std::string &reason, const std::string &ipmask)
4674 OnLine(source,ipmask,true,'Z',duration,reason);
4677 virtual void OnAddQLine(long duration, userrec* source, const std::string &reason, const std::string &nickmask)
4679 OnLine(source,nickmask,true,'Q',duration,reason);
4682 virtual void OnAddELine(long duration, userrec* source, const std::string &reason, const std::string &hostmask)
4684 OnLine(source,hostmask,true,'E',duration,reason);
4687 virtual void OnDelGLine(userrec* source, const std::string &hostmask)
4689 OnLine(source,hostmask,false,'G',0,"");
4692 virtual void OnDelZLine(userrec* source, const std::string &ipmask)
4694 OnLine(source,ipmask,false,'Z',0,"");
4697 virtual void OnDelQLine(userrec* source, const std::string &nickmask)
4699 OnLine(source,nickmask,false,'Q',0,"");
4702 virtual void OnDelELine(userrec* source, const std::string &hostmask)
4704 OnLine(source,hostmask,false,'E',0,"");
4707 virtual void OnMode(userrec* user, void* dest, int target_type, const std::string &text)
4709 if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
4711 if (target_type == TYPE_USER)
4713 userrec* u = (userrec*)dest;
4714 std::deque<std::string> params;
4715 params.push_back(u->nick);
4716 params.push_back(text);
4717 DoOneToMany(user->nick,"MODE",params);
4721 chanrec* c = (chanrec*)dest;
4722 std::deque<std::string> params;
4723 params.push_back(c->name);
4724 params.push_back(text);
4725 DoOneToMany(user->nick,"MODE",params);
4730 virtual void OnSetAway(userrec* user)
4734 std::deque<std::string> params;
4735 params.push_back(":"+std::string(user->awaymsg));
4736 DoOneToMany(user->nick,"AWAY",params);
4740 virtual void OnCancelAway(userrec* user)
4744 std::deque<std::string> params;
4746 DoOneToMany(user->nick,"AWAY",params);
4750 virtual void ProtoSendMode(void* opaque, int target_type, void* target, const std::string &modeline)
4752 TreeSocket* s = (TreeSocket*)opaque;
4755 if (target_type == TYPE_USER)
4757 userrec* u = (userrec*)target;
4758 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" FMODE "+u->nick+" "+ConvToStr(u->age)+" "+modeline);
4762 chanrec* c = (chanrec*)target;
4763 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age)+" "+modeline);
4768 virtual void ProtoSendMetaData(void* opaque, int target_type, void* target, const std::string &extname, const std::string &extdata)
4770 TreeSocket* s = (TreeSocket*)opaque;
4773 if (target_type == TYPE_USER)
4775 userrec* u = (userrec*)target;
4776 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA "+u->nick+" "+extname+" :"+extdata);
4778 else if (target_type == TYPE_OTHER)
4780 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA * "+extname+" :"+extdata);
4782 else if (target_type == TYPE_CHANNEL)
4784 chanrec* c = (chanrec*)target;
4785 s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA "+c->name+" "+extname+" :"+extdata);
4790 virtual void OnEvent(Event* event)
4792 if (event->GetEventID() == "send_metadata")
4794 std::deque<std::string>* params = (std::deque<std::string>*)event->GetData();
4795 if (params->size() < 3)
4797 (*params)[2] = ":" + (*params)[2];
4798 DoOneToMany(ServerInstance->Config->ServerName,"METADATA",*params);
4800 else if (event->GetEventID() == "send_mode")
4802 std::deque<std::string>* params = (std::deque<std::string>*)event->GetData();
4803 if (params->size() < 2)
4805 // Insert the TS value of the object, either userrec or chanrec
4807 userrec* a = ServerInstance->FindNick((*params)[0]);
4814 chanrec* a = ServerInstance->FindChan((*params)[0]);
4820 params->insert(params->begin() + 1,ConvToStr(ourTS));
4821 DoOneToMany(ServerInstance->Config->ServerName,"FMODE",*params);
4825 virtual ~ModuleSpanningTree()
4829 virtual Version GetVersion()
4831 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
4834 void Implements(char* List)
4836 List[I_OnPreCommand] = List[I_OnGetServerDescription] = List[I_OnUserInvite] = List[I_OnPostLocalTopicChange] = 1;
4837 List[I_OnWallops] = List[I_OnUserNotice] = List[I_OnUserMessage] = List[I_OnBackgroundTimer] = 1;
4838 List[I_OnUserJoin] = List[I_OnChangeHost] = List[I_OnChangeName] = List[I_OnUserPart] = List[I_OnUserConnect] = 1;
4839 List[I_OnUserQuit] = List[I_OnUserPostNick] = List[I_OnUserKick] = List[I_OnRemoteKill] = List[I_OnRehash] = 1;
4840 List[I_OnOper] = List[I_OnAddGLine] = List[I_OnAddZLine] = List[I_OnAddQLine] = List[I_OnAddELine] = 1;
4841 List[I_OnDelGLine] = List[I_OnDelZLine] = List[I_OnDelQLine] = List[I_OnDelELine] = List[I_ProtoSendMode] = List[I_OnMode] = 1;
4842 List[I_OnStats] = List[I_ProtoSendMetaData] = List[I_OnEvent] = List[I_OnSetAway] = List[I_OnCancelAway] = List[I_OnPostCommand] = 1;
4845 /* It is IMPORTANT that m_spanningtree is the last module in the chain
4846 * so that any activity it sees is FINAL, e.g. we arent going to send out
4847 * a NICK message before m_cloaking has finished putting the +x on the user,
4849 * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
4850 * the module call queue.
4852 Priority Prioritize()
4854 return PRIORITY_LAST;
4858 void DoFailOver(Link* x)
4860 TreeProtocolModule->DoFailOver(x);
4863 Link* FindLink(const std::string& name)
4865 return TreeProtocolModule->FindLink(name);
4868 class ModuleSpanningTreeFactory : public ModuleFactory
4871 ModuleSpanningTreeFactory()
4875 ~ModuleSpanningTreeFactory()
4879 virtual Module * CreateModule(InspIRCd* Me)
4881 TreeProtocolModule = new ModuleSpanningTree(Me);
4882 return TreeProtocolModule;
4888 extern "C" void * init_module( void )
4890 return new ModuleSpanningTreeFactory;