2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
5 * Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
6 * Copyright (C) 2007 Craig Edwards <craigedwards@brainbox.cc>
7 * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
9 * This file is part of InspIRCd. InspIRCd is free software: you can
10 * redistribute it and/or modify it under the terms of the GNU General Public
11 * License as published by the Free Software Foundation, version 2.
13 * This program is distributed in the hope that it will be useful, but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
15 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
18 * You should have received a copy of the GNU General Public License
19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
27 #include "modules/server.h"
29 #include "treeserver.h"
31 #include "treesocket.h"
34 /** Constructor for outgoing connections.
35 * Because most of the I/O gubbins are encapsulated within
36 * BufferedSocket, we just call DoConnect() for most of the action,
37 * and only do minor initialization tasks ourselves.
39 TreeSocket::TreeSocket(Link* link, Autoconnect* myac, const irc::sockets::sockaddrs& dest)
40 : linkID(link->Name), LinkState(CONNECTING), MyRoot(NULL), proto_version(0)
41 , burstsent(false), age(ServerInstance->Time())
43 capab = new CapabData;
46 capab->capab_phase = 0;
48 irc::sockets::sockaddrs bind;
49 memset(&bind, 0, sizeof(bind));
50 if ((dest.family() == AF_INET || dest.family() == AF_INET6) && !irc::sockets::aptosa(link->Bind, 0, bind))
53 SetError("Bind address '" + link->Bind + "' is not an valid IPv4 or IPv6 address");
54 TreeSocket::OnError(I_ERR_BIND);
58 DoConnect(dest, bind, link->Timeout);
59 Utils->timeoutlist[this] = std::pair<std::string, unsigned int>(linkID, link->Timeout);
63 /** Constructor for incoming connections
65 TreeSocket::TreeSocket(int newfd, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
66 : BufferedSocket(newfd)
67 , linkID("inbound from " + client->addr()), LinkState(WAIT_AUTH_1), MyRoot(NULL), proto_version(0)
68 , burstsent(false), age(ServerInstance->Time())
70 capab = new CapabData;
71 capab->capab_phase = 0;
73 for (ListenSocket::IOHookProvList::iterator i = via->iohookprovs.begin(); i != via->iohookprovs.end(); ++i)
75 ListenSocket::IOHookProvRef& iohookprovref = *i;
79 iohookprovref->OnAccept(this, client, server);
80 // IOHook could have encountered a fatal error, e.g. if the TLS ClientHello was already in the queue and there was no common TLS version
81 if (!getError().empty())
83 TreeSocket::OnError(I_ERR_OTHER);
90 Utils->timeoutlist[this] = std::pair<std::string, unsigned int>(linkID, 30);
93 void TreeSocket::CleanNegotiationInfo()
95 // connect is good, reset the autoconnect block (if used)
97 capab->ac->position = -1;
102 CullResult TreeSocket::cull()
104 Utils->timeoutlist.erase(this);
105 if (capab && capab->ac)
106 Utils->Creator->ConnectServer(capab->ac, false);
107 return this->BufferedSocket::cull();
110 TreeSocket::~TreeSocket()
115 /** When an outbound connection finishes connecting, we receive
116 * this event, and must do CAPAB negotiation with the other
117 * side. If the other side is happy, as outlined in the server
118 * to server docs on the inspircd.org site, the other side
119 * will then send back its own SERVER string eventually.
121 void TreeSocket::OnConnected()
123 if (this->LinkState == CONNECTING)
125 if (!capab->link->Hook.empty())
127 ServiceProvider* prov = ServerInstance->Modules->FindService(SERVICE_IOHOOK, capab->link->Hook);
130 SetError("Could not find hook '" + capab->link->Hook + "' for connection to " + linkID);
133 static_cast<IOHookProvider*>(prov)->OnConnect(this);
136 ServerInstance->SNO->WriteGlobalSno('l', "Connection to \2%s\2[%s] started.", linkID.c_str(),
137 (capab->link->HiddenFromStats ? "<hidden>" : capab->link->IPAddr.c_str()));
138 this->SendCapabilities(1);
142 void TreeSocket::OnError(BufferedSocketError e)
144 ServerInstance->SNO->WriteGlobalSno('l', "Connection to '\002%s\002' failed with error: %s",
145 linkID.c_str(), getError().c_str());
150 void TreeSocket::SendError(const std::string &errormessage)
152 WriteLine("ERROR :"+errormessage);
155 SetError(errormessage);
158 CmdResult CommandSQuit::HandleServer(TreeServer* server, CommandBase::Params& params)
160 TreeServer* quitting = Utils->FindServer(params[0]);
163 ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Squit from unknown server");
167 CmdResult ret = CMD_SUCCESS;
168 if (quitting == server)
171 server = server->GetParent();
173 else if (quitting->GetParent() != server)
174 throw ProtocolException("Attempted to SQUIT a non-directly connected server or the parent");
176 server->SQuitChild(quitting, params[1]);
178 // XXX: Return CMD_FAILURE when servers SQUIT themselves (i.e. :00S SQUIT 00S :Shutting down)
179 // to stop this message from being forwarded.
180 // The squit logic generates a SQUIT message with our sid as the source and sends it to the
181 // remaining servers.
185 /** This function is called when we receive data from a remote
188 void TreeSocket::OnDataReady()
190 Utils->Creator->loopCall = true;
192 while (GetNextLine(line))
194 std::string::size_type rline = line.find('\r');
195 if (rline != std::string::npos)
197 if (line.find('\0') != std::string::npos)
199 SendError("Read null character from socket");
207 catch (CoreException& ex)
209 ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Error while processing: " + line);
210 ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, ex.GetReason());
211 SendError(ex.GetReason() + " - check the log file for details");
214 if (!getError().empty())
217 if (LinkState != CONNECTED && recvq.length() > 4096)
218 SendError("RecvQ overrun (line too long)");
219 Utils->Creator->loopCall = false;