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 (!link->Bind.empty() && (dest.family() == AF_INET || dest.family() == AF_INET6))
52 if (!irc::sockets::aptosa(link->Bind, 0, bind))
55 SetError("Bind address '" + link->Bind + "' is not an valid IPv4 or IPv6 address");
56 TreeSocket::OnError(I_ERR_BIND);
59 else if (bind.family() != dest.family())
62 SetError("Bind address '" + bind.addr() + "' is not the same address family as destination address '" + dest.addr() + "'");
63 TreeSocket::OnError(I_ERR_BIND);
68 DoConnect(dest, bind, link->Timeout);
69 Utils->timeoutlist[this] = std::pair<std::string, unsigned int>(linkID, link->Timeout);
73 /** Constructor for incoming connections
75 TreeSocket::TreeSocket(int newfd, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
76 : BufferedSocket(newfd)
77 , linkID("inbound from " + client->addr()), LinkState(WAIT_AUTH_1), MyRoot(NULL), proto_version(0)
78 , burstsent(false), age(ServerInstance->Time())
80 capab = new CapabData;
81 capab->capab_phase = 0;
83 for (ListenSocket::IOHookProvList::iterator i = via->iohookprovs.begin(); i != via->iohookprovs.end(); ++i)
85 ListenSocket::IOHookProvRef& iohookprovref = *i;
89 iohookprovref->OnAccept(this, client, server);
90 // 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
91 if (!getError().empty())
93 TreeSocket::OnError(I_ERR_OTHER);
100 Utils->timeoutlist[this] = std::pair<std::string, unsigned int>(linkID, 30);
103 void TreeSocket::CleanNegotiationInfo()
105 // connect is good, reset the autoconnect block (if used)
107 capab->ac->position = -1;
112 CullResult TreeSocket::cull()
114 Utils->timeoutlist.erase(this);
115 if (capab && capab->ac)
116 Utils->Creator->ConnectServer(capab->ac, false);
117 return this->BufferedSocket::cull();
120 TreeSocket::~TreeSocket()
125 /** When an outbound connection finishes connecting, we receive
126 * this event, and must do CAPAB negotiation with the other
127 * side. If the other side is happy, as outlined in the server
128 * to server docs on the inspircd.org site, the other side
129 * will then send back its own SERVER string eventually.
131 void TreeSocket::OnConnected()
133 if (this->LinkState == CONNECTING)
135 if (!capab->link->Hook.empty())
137 ServiceProvider* prov = ServerInstance->Modules->FindService(SERVICE_IOHOOK, capab->link->Hook);
140 SetError("Could not find hook '" + capab->link->Hook + "' for connection to " + linkID);
143 static_cast<IOHookProvider*>(prov)->OnConnect(this);
146 ServerInstance->SNO->WriteGlobalSno('l', "Connection to \2%s\2[%s] started.", linkID.c_str(),
147 (capab->link->HiddenFromStats ? "<hidden>" : capab->link->IPAddr.c_str()));
148 this->SendCapabilities(1);
152 void TreeSocket::OnError(BufferedSocketError e)
154 ServerInstance->SNO->WriteGlobalSno('l', "Connection to '\002%s\002' failed with error: %s",
155 linkID.c_str(), getError().c_str());
160 void TreeSocket::SendError(const std::string &errormessage)
162 WriteLine("ERROR :"+errormessage);
165 SetError(errormessage);
168 CmdResult CommandSQuit::HandleServer(TreeServer* server, CommandBase::Params& params)
170 TreeServer* quitting = Utils->FindServer(params[0]);
173 ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Squit from unknown server");
177 CmdResult ret = CMD_SUCCESS;
178 if (quitting == server)
181 server = server->GetParent();
183 else if (quitting->GetParent() != server)
184 throw ProtocolException("Attempted to SQUIT a non-directly connected server or the parent");
186 server->SQuitChild(quitting, params[1]);
188 // XXX: Return CMD_FAILURE when servers SQUIT themselves (i.e. :00S SQUIT 00S :Shutting down)
189 // to stop this message from being forwarded.
190 // The squit logic generates a SQUIT message with our sid as the source and sends it to the
191 // remaining servers.
195 /** This function is called when we receive data from a remote
198 void TreeSocket::OnDataReady()
200 Utils->Creator->loopCall = true;
202 while (GetNextLine(line))
204 std::string::size_type rline = line.find('\r');
205 if (rline != std::string::npos)
207 if (line.find('\0') != std::string::npos)
209 SendError("Read null character from socket");
217 catch (CoreException& ex)
219 ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Error while processing: " + line);
220 ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, ex.GetReason());
221 SendError(ex.GetReason() + " - check the log file for details");
224 if (!getError().empty())
227 if (LinkState != CONNECTED && recvq.length() > 4096)
228 SendError("RecvQ overrun (line too long)");
229 Utils->Creator->loopCall = false;