1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2009 InspIRCd Development Team
6 * See: http://wiki.inspircd.org/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
17 #include "../m_hash.h"
18 #include "socketengine.h"
21 #include "../spanningtree.h"
23 #include "treeserver.h"
25 #include "treesocket.h"
26 #include "resolvers.h"
28 /** Because most of the I/O gubbins are encapsulated within
29 * BufferedSocket, we just call the superclass constructor for
30 * most of the action, and append a few of our own values
33 TreeSocket::TreeSocket(SpanningTreeUtilities* Util, const std::string& shost, int iport, unsigned long maxtime, const std::string &ServerName, const std::string &bindto, Autoconnect* myac, const std::string& hook)
34 : Utils(Util), IP(shost), myautoconnect(myac)
36 age = ServerInstance->Time();
40 LinkState = CONNECTING;
43 modulelist* ml = ServerInstance->Modules->FindInterface("BufferedSocketHook");
46 for(modulelist::iterator i = ml->begin(); i != ml->end(); ++i)
48 std::string name = (**i).ModuleSourceFile;
49 int a = name.rfind('_');
50 int b = name.rfind('.');
51 name = name.substr(a+1, b-a-1);
59 SetError("Could not find hook '" + hook + "' for connection to " + ServerName);
63 DoConnect(shost, iport, maxtime, bindto);
64 Utils->timeoutlist[this] = std::pair<std::string, int>(ServerName, maxtime);
68 /** When a listening socket gives us a new file descriptor,
69 * we must associate it with a socket without creating a new
70 * connection. This constructor is used for this purpose.
72 TreeSocket::TreeSocket(SpanningTreeUtilities* Util, int newfd, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
73 : BufferedSocket(newfd), Utils(Util)
76 age = ServerInstance->Time();
77 LinkState = WAIT_AUTH_1;
80 myhost = "inbound from " + IP;
82 FOREACH_MOD(I_OnHookIO, OnHookIO(this, via));
84 GetIOHook()->OnStreamSocketAccept(this, client, server);
87 Utils->timeoutlist[this] = std::pair<std::string, int>(myhost, 30);
90 ServerState TreeSocket::GetLinkState()
92 return this->LinkState;
95 void TreeSocket::CleanNegotiationInfo()
98 OptModuleList.clear();
100 ourchallenge.clear();
101 theirchallenge.clear();
102 OutboundPass.clear();
105 CullResult TreeSocket::cull()
107 Utils->timeoutlist.erase(this);
109 Utils->Creator->ConnectServer(myautoconnect, false);
110 return this->BufferedSocket::cull();
113 TreeSocket::~TreeSocket()
117 /** When an outbound connection finishes connecting, we receive
118 * this event, and must send our SERVER string to the other
119 * side. If the other side is happy, as outlined in the server
120 * to server docs on the inspircd.org site, the other side
121 * will then send back its own server string.
123 void TreeSocket::OnConnected()
125 if (this->LinkState == CONNECTING)
127 /* we do not need to change state here. */
128 for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); ++i)
131 if (x->Name == this->myhost)
133 ServerInstance->SNO->WriteGlobalSno('l', "Connection to \2%s\2[%s] started.", myhost.c_str(), (x->HiddenFromStats ? "<hidden>" : this->IP.c_str()));
134 this->OutboundPass = x->SendPass;
135 this->SendCapabilities(1);
140 /* There is a (remote) chance that between the /CONNECT and the connection
141 * being accepted, some muppet has removed the <link> block and rehashed.
142 * If that happens the connection hangs here until it's closed. Unlikely
143 * and rather harmless.
145 ServerInstance->SNO->WriteGlobalSno('l', "Connection to \2%s\2 lost link tag(!)", myhost.c_str());
148 void TreeSocket::OnError(BufferedSocketError e)
150 ServerInstance->SNO->WriteGlobalSno('l', "Connection to \002%s\002 failed with error: %s",
151 myhost.c_str(), getError().c_str());
154 void TreeSocket::SendError(const std::string &errormessage)
156 WriteLine("ERROR :"+errormessage);
157 SetError(errormessage);
160 /** This function forces this server to quit, removing this server
161 * and any users on it (and servers and users below that, etc etc).
162 * It's very slow and pretty clunky, but luckily unless your network
163 * is having a REAL bad hair day, this function shouldnt be called
164 * too many times a month ;-)
166 void TreeSocket::SquitServer(std::string &from, TreeServer* Current)
168 ServerInstance->Logs->Log("m_spanningtree",DEBUG,"SquitServer for %s from %s",
169 Current->GetName().c_str(), from.c_str());
170 /* recursively squit the servers attached to 'Current'.
171 * We're going backwards so we don't remove users
172 * while we still need them ;)
174 for (unsigned int q = 0; q < Current->ChildCount(); q++)
176 TreeServer* recursive_server = Current->GetChild(q);
177 this->SquitServer(from,recursive_server);
179 /* Now we've whacked the kids, whack self */
181 num_lost_users += Current->QuitUsers(from);
184 /** This is a wrapper function for SquitServer above, which
185 * does some validation first and passes on the SQUIT to all
186 * other remaining servers.
188 void TreeSocket::Squit(TreeServer* Current, const std::string &reason)
190 bool LocalSquit = false;
192 if ((Current) && (Current != Utils->TreeRoot))
194 DelServerEvent(Utils->Creator, Current->GetName());
196 parameterlist params;
197 params.push_back(Current->GetName());
198 params.push_back(":"+reason);
199 Utils->DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
200 if (Current->GetParent() == Utils->TreeRoot)
202 ServerInstance->SNO->WriteGlobalSno('l', "Server \002"+Current->GetName()+"\002 split: "+reason);
207 ServerInstance->SNO->WriteGlobalSno('L', "Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
209 num_lost_servers = 0;
211 std::string from = Current->GetParent()->GetName()+" "+Current->GetName();
212 SquitServer(from, Current);
214 Current->GetParent()->DelChild(Current);
218 ServerInstance->SNO->WriteToSnoMask('l', "Netsplit complete, lost \002%d\002 user%s on \002%d\002 server%s.", num_lost_users, num_lost_users != 1 ? "s" : "", num_lost_servers, num_lost_servers != 1 ? "s" : "");
220 ServerInstance->SNO->WriteToSnoMask('L', "Netsplit complete, lost \002%d\002 user%s on \002%d\002 server%s.", num_lost_users, num_lost_users != 1 ? "s" : "", num_lost_servers, num_lost_servers != 1 ? "s" : "");
223 ServerInstance->Logs->Log("m_spanningtree",DEFAULT,"Squit from unknown server");
226 /** This function is called when we receive data from a remote
229 void TreeSocket::OnDataReady()
231 Utils->Creator->loopCall = true;
232 /* While there is at least one new line in the buffer,
233 * do something useful (we hope!) with it.
235 while (recvq.find("\n") != std::string::npos)
237 std::string ret = recvq.substr(0,recvq.find("\n")-1);
238 recvq = recvq.substr(recvq.find("\n")+1,recvq.length()-recvq.find("\n"));
239 /* Use rfind here not find, as theres more
240 * chance of the \r being near the end of the
241 * string, not the start.
243 if (ret.find("\r") != std::string::npos)
244 ret = recvq.substr(0,recvq.find("\r")-1);
247 Utils->Creator->loopCall = false;