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/>.
28 #include "treeserver.h"
30 #include "treesocket.h"
33 /** Constructor for outgoing connections.
34 * Because most of the I/O gubbins are encapsulated within
35 * BufferedSocket, we just call DoConnect() for most of the action,
36 * and only do minor initialization tasks ourselves.
38 TreeSocket::TreeSocket(Link* link, Autoconnect* myac, const irc::sockets::sockaddrs& dest)
39 : linkID(link->Name), LinkState(CONNECTING), MyRoot(NULL), proto_version(0)
40 , burstsent(false), age(ServerInstance->Time())
42 capab = new CapabData;
45 capab->capab_phase = 0;
47 irc::sockets::sockaddrs bind;
48 memset(&bind, 0, sizeof(bind));
49 if (!link->Bind.empty() && (dest.family() == AF_INET || dest.family() == AF_INET6))
51 if (!irc::sockets::aptosa(link->Bind, 0, bind))
54 SetError("Bind address '" + link->Bind + "' is not a valid IPv4 or IPv6 address");
55 TreeSocket::OnError(I_ERR_BIND);
58 else if (bind.family() != dest.family())
61 SetError("Bind address '" + bind.addr() + "' is not the same address family as destination address '" + dest.addr() + "'");
62 TreeSocket::OnError(I_ERR_BIND);
67 DoConnect(dest, bind, link->Timeout);
68 Utils->timeoutlist[this] = std::pair<std::string, unsigned int>(linkID, link->Timeout);
72 /** Constructor for incoming connections
74 TreeSocket::TreeSocket(int newfd, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
75 : BufferedSocket(newfd)
76 , linkID("inbound from " + client->addr()), LinkState(WAIT_AUTH_1), MyRoot(NULL), proto_version(0)
77 , burstsent(false), age(ServerInstance->Time())
79 capab = new CapabData;
80 capab->capab_phase = 0;
82 for (ListenSocket::IOHookProvList::iterator i = via->iohookprovs.begin(); i != via->iohookprovs.end(); ++i)
84 ListenSocket::IOHookProvRef& iohookprovref = *i;
88 iohookprovref->OnAccept(this, client, server);
89 // 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
90 if (!getError().empty())
92 TreeSocket::OnError(I_ERR_OTHER);
99 Utils->timeoutlist[this] = std::pair<std::string, unsigned int>(linkID, 30);
102 void TreeSocket::CleanNegotiationInfo()
104 // connect is good, reset the autoconnect block (if used)
106 capab->ac->position = -1;
111 CullResult TreeSocket::cull()
113 Utils->timeoutlist.erase(this);
114 if (capab && capab->ac)
115 Utils->Creator->ConnectServer(capab->ac, false);
116 return this->BufferedSocket::cull();
119 TreeSocket::~TreeSocket()
124 /** When an outbound connection finishes connecting, we receive
125 * this event, and must do CAPAB negotiation with the other
126 * side. If the other side is happy, as outlined in the server
127 * to server docs on the inspircd.org site, the other side
128 * will then send back its own SERVER string eventually.
130 void TreeSocket::OnConnected()
132 if (this->LinkState == CONNECTING)
134 if (!capab->link->Hook.empty())
136 ServiceProvider* prov = ServerInstance->Modules->FindService(SERVICE_IOHOOK, capab->link->Hook);
139 SetError("Could not find hook '" + capab->link->Hook + "' for connection to " + linkID);
142 static_cast<IOHookProvider*>(prov)->OnConnect(this);
145 ServerInstance->SNO->WriteGlobalSno('l', "Connection to \002%s\002[%s] started.", linkID.c_str(),
146 (capab->link->HiddenFromStats ? "<hidden>" : capab->link->IPAddr.c_str()));
147 this->SendCapabilities(1);
151 void TreeSocket::OnError(BufferedSocketError e)
153 ServerInstance->SNO->WriteGlobalSno('l', "Connection to '\002%s\002' failed with error: %s",
154 linkID.c_str(), getError().c_str());
159 void TreeSocket::SendError(const std::string &errormessage)
161 WriteLine("ERROR :"+errormessage);
164 SetError(errormessage);
167 CmdResult CommandSQuit::HandleServer(TreeServer* server, CommandBase::Params& params)
169 TreeServer* quitting = Utils->FindServer(params[0]);
172 ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Squit from unknown server");
176 CmdResult ret = CMD_SUCCESS;
177 if (quitting == server)
180 server = server->GetParent();
182 else if (quitting->GetParent() != server)
183 throw ProtocolException("Attempted to SQUIT a non-directly connected server or the parent");
185 server->SQuitChild(quitting, params[1]);
187 // XXX: Return CMD_FAILURE when servers SQUIT themselves (i.e. :00S SQUIT 00S :Shutting down)
188 // to stop this message from being forwarded.
189 // The squit logic generates a SQUIT message with our sid as the source and sends it to the
190 // remaining servers.
194 /** This function is called when we receive data from a remote
197 void TreeSocket::OnDataReady()
199 Utils->Creator->loopCall = true;
201 while (GetNextLine(line))
203 std::string::size_type rline = line.find('\r');
204 if (rline != std::string::npos)
206 if (line.find('\0') != std::string::npos)
208 SendError("Read null character from socket");
216 catch (CoreException& ex)
218 ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Error while processing: " + line);
219 ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, ex.GetReason());
220 SendError(ex.GetReason() + " - check the log file for details");
223 if (!getError().empty())
226 if (LinkState != CONNECTED && recvq.length() > 4096)
227 SendError("RecvQ overrun (line too long)");
228 Utils->Creator->loopCall = false;