-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
*
- * InspIRCd: (C) 2002-2009 InspIRCd Development Team
- * See: http://wiki.inspircd.org/Credits
+ * Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
+ * Copyright (C) 2007 Craig Edwards <craigedwards@brainbox.cc>
+ * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
*
- * This program is free but copyrighted software; see
- * the file COPYING for details.
+ * This file is part of InspIRCd. InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
*
- * ---------------------------------------------------
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+
#include "inspircd.h"
-#include "socket.h"
-#include "xline.h"
-#include "../m_hash.h"
-#include "socketengine.h"
+#include "iohook.h"
#include "main.h"
-#include "../spanningtree.h"
+#include "modules/spanningtree.h"
#include "utils.h"
#include "treeserver.h"
#include "link.h"
#include "treesocket.h"
-#include "resolvers.h"
+#include "commands.h"
-/** Because most of the I/O gubbins are encapsulated within
- * BufferedSocket, we just call the superclass constructor for
- * most of the action, and append a few of our own values
- * to it.
+/** Constructor for outgoing connections.
+ * Because most of the I/O gubbins are encapsulated within
+ * BufferedSocket, we just call DoConnect() for most of the action,
+ * and only do minor initialization tasks ourselves.
*/
-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)
- : Utils(Util), IP(shost), myautoconnect(myac)
+TreeSocket::TreeSocket(Link* link, Autoconnect* myac, const std::string& ipaddr)
+ : linkID(link->Name), LinkState(CONNECTING), MyRoot(NULL), proto_version(0)
+ , burstsent(false), age(ServerInstance->Time())
{
- age = ServerInstance->Time();
- myhost = ServerName;
- capab_phase = 0;
- proto_version = 0;
- LinkState = CONNECTING;
- DoConnect(shost, iport, maxtime, bindto);
- Utils->timeoutlist[this] = std::pair<std::string, int>(ServerName, maxtime);
- // TODO AddIOHook using the given hook
+ capab = new CapabData;
+ capab->link = link;
+ capab->ac = myac;
+ capab->capab_phase = 0;
+
+ DoConnect(ipaddr, link->Port, link->Timeout, link->Bind);
+ Utils->timeoutlist[this] = std::pair<std::string, int>(linkID, link->Timeout);
SendCapabilities(1);
}
-/** When a listening socket gives us a new file descriptor,
- * we must associate it with a socket without creating a new
- * connection. This constructor is used for this purpose.
+/** Constructor for incoming connections
*/
-TreeSocket::TreeSocket(SpanningTreeUtilities* Util, int newfd, ListenSocketBase* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
- : BufferedSocket(newfd), Utils(Util)
+TreeSocket::TreeSocket(int newfd, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
+ : BufferedSocket(newfd)
+ , linkID("inbound from " + client->addr()), LinkState(WAIT_AUTH_1), MyRoot(NULL), proto_version(0)
+ , burstsent(false), age(ServerInstance->Time())
{
- int dummy;
- irc::sockets::satoap(client, IP, dummy);
- age = ServerInstance->Time();
- LinkState = WAIT_AUTH_1;
- capab_phase = 0;
- proto_version = 0;
-
- FOREACH_MOD(I_OnHookIO, OnHookIO(this, via));
- if (GetIOHook())
- GetIOHook()->OnStreamSocketAccept(this, client, server);
- SendCapabilities(1);
+ capab = new CapabData;
+ capab->capab_phase = 0;
- /* Fix by Brain - inbound sockets need a timeout, too. 30 secs should be pleanty */
- Utils->timeoutlist[this] = std::pair<std::string, int>("<from " + IP + ">", 30);
-}
+ for (ListenSocket::IOHookProvList::iterator i = via->iohookprovs.begin(); i != via->iohookprovs.end(); ++i)
+ {
+ ListenSocket::IOHookProvRef& iohookprovref = *i;
+ if (!iohookprovref)
+ continue;
-ServerState TreeSocket::GetLinkState()
-{
- return this->LinkState;
+ iohookprovref->OnAccept(this, client, server);
+ // 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
+ if (!getError().empty())
+ {
+ TreeSocket::OnError(I_ERR_OTHER);
+ return;
+ }
+ }
+
+ SendCapabilities(1);
+
+ Utils->timeoutlist[this] = std::pair<std::string, int>(linkID, 30);
}
void TreeSocket::CleanNegotiationInfo()
{
- ModuleList.clear();
- OptModuleList.clear();
- CapKeys.clear();
- ourchallenge.clear();
- theirchallenge.clear();
- OutboundPass.clear();
+ // connect is good, reset the autoconnect block (if used)
+ if (capab->ac)
+ capab->ac->position = -1;
+ delete capab;
+ capab = NULL;
}
-bool TreeSocket::cull()
+CullResult TreeSocket::cull()
{
Utils->timeoutlist.erase(this);
+ if (capab && capab->ac)
+ Utils->Creator->ConnectServer(capab->ac, false);
return this->BufferedSocket::cull();
}
TreeSocket::~TreeSocket()
{
+ delete capab;
}
/** When an outbound connection finishes connecting, we receive
- * this event, and must send our SERVER string to the other
+ * this event, and must do CAPAB negotiation with the other
* side. If the other side is happy, as outlined in the server
* to server docs on the inspircd.org site, the other side
- * will then send back its own server string.
+ * will then send back its own SERVER string eventually.
*/
void TreeSocket::OnConnected()
{
if (this->LinkState == CONNECTING)
{
- /* we do not need to change state here. */
- for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); ++i)
+ if (!capab->link->Hook.empty())
{
- Link* x = *i;
- if (x->Name == this->myhost)
+ ServiceProvider* prov = ServerInstance->Modules->FindService(SERVICE_IOHOOK, capab->link->Hook);
+ if (!prov)
{
- ServerInstance->SNO->WriteToSnoMask('l', "Connection to \2%s\2[%s] started.", myhost.c_str(), (x->HiddenFromStats ? "<hidden>" : this->IP.c_str()));
- this->OutboundPass = x->SendPass;
- this->SendCapabilities(1);
+ SetError("Could not find hook '" + capab->link->Hook + "' for connection to " + linkID);
return;
}
+ static_cast<IOHookProvider*>(prov)->OnConnect(this);
}
+
+ ServerInstance->SNO->WriteGlobalSno('l', "Connection to \2%s\2[%s] started.", linkID.c_str(),
+ (capab->link->HiddenFromStats ? "<hidden>" : capab->link->IPAddr.c_str()));
+ this->SendCapabilities(1);
}
- /* There is a (remote) chance that between the /CONNECT and the connection
- * being accepted, some muppet has removed the <link> block and rehashed.
- * If that happens the connection hangs here until it's closed. Unlikely
- * and rather harmless.
- */
- ServerInstance->SNO->WriteToSnoMask('l', "Connection to \2%s\2 lost link tag(!)", myhost.c_str());
}
void TreeSocket::OnError(BufferedSocketError e)
{
- switch (e)
- {
- case I_ERR_CONNECT:
- ServerInstance->SNO->WriteToSnoMask('l', "Connection failed: Connection to \002%s\002 refused", myhost.c_str());
- Utils->Creator->ConnectServer(myautoconnect);
- break;
- case I_ERR_SOCKET:
- ServerInstance->SNO->WriteToSnoMask('l', "Connection failed: Could not create socket (%s)", strerror(errno));
- break;
- case I_ERR_BIND:
- ServerInstance->SNO->WriteToSnoMask('l', "Connection failed: Error binding socket to address or port (%s)", strerror(errno));
- break;
- case I_ERR_WRITE:
- ServerInstance->SNO->WriteToSnoMask('l', "Connection failed: I/O error on connection (%s)", errno ? strerror(errno) : "Connection closed unexpectedly");
- break;
- case I_ERR_NOMOREFDS:
- ServerInstance->SNO->WriteToSnoMask('l', "Connection failed: Operating system is out of file descriptors!");
- break;
- default:
- if ((errno) && (errno != EINPROGRESS) && (errno != EAGAIN))
- ServerInstance->SNO->WriteToSnoMask('l', "Connection to \002%s\002 failed with OS error: %s", myhost.c_str(), strerror(errno));
- break;
- }
+ ServerInstance->SNO->WriteGlobalSno('l', "Connection to '\002%s\002' failed with error: %s",
+ linkID.c_str(), getError().c_str());
+ LinkState = DYING;
+ Close();
}
void TreeSocket::SendError(const std::string &errormessage)
{
- /* Display the error locally as well as sending it remotely */
- ServerInstance->SNO->WriteToSnoMask('l', "Sent \2ERROR\2 to %s: %s", (this->InboundServerName.empty() ? this->IP.c_str() : this->InboundServerName.c_str()), errormessage.c_str());
WriteLine("ERROR :"+errormessage);
+ DoWrite();
+ LinkState = DYING;
SetError(errormessage);
}
-/** This function forces this server to quit, removing this server
- * and any users on it (and servers and users below that, etc etc).
- * It's very slow and pretty clunky, but luckily unless your network
- * is having a REAL bad hair day, this function shouldnt be called
- * too many times a month ;-)
- */
-void TreeSocket::SquitServer(std::string &from, TreeServer* Current)
+CmdResult CommandSQuit::HandleServer(TreeServer* server, std::vector<std::string>& params)
{
- ServerInstance->Logs->Log("m_spanningtree",DEBUG,"SquitServer for %s from %s",
- Current->GetName().c_str(), from.c_str());
- /* recursively squit the servers attached to 'Current'.
- * We're going backwards so we don't remove users
- * while we still need them ;)
- */
- for (unsigned int q = 0; q < Current->ChildCount(); q++)
+ TreeServer* quitting = Utils->FindServer(params[0]);
+ if (!quitting)
{
- TreeServer* recursive_server = Current->GetChild(q);
- this->SquitServer(from,recursive_server);
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Squit from unknown server");
+ return CMD_FAILURE;
}
- /* Now we've whacked the kids, whack self */
- num_lost_servers++;
- num_lost_users += Current->QuitUsers(from);
-}
-/** This is a wrapper function for SquitServer above, which
- * does some validation first and passes on the SQUIT to all
- * other remaining servers.
- */
-void TreeSocket::Squit(TreeServer* Current, const std::string &reason)
-{
- bool LocalSquit = false;
-
- if ((Current) && (Current != Utils->TreeRoot))
+ CmdResult ret = CMD_SUCCESS;
+ if (quitting == server)
{
- DelServerEvent(Utils->Creator, Current->GetName());
-
- parameterlist params;
- params.push_back(Current->GetName());
- params.push_back(":"+reason);
- Utils->DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
- if (Current->GetParent() == Utils->TreeRoot)
- {
- ServerInstance->SNO->WriteToSnoMask('l', "Server \002"+Current->GetName()+"\002 split: "+reason);
- LocalSquit = true;
- }
- else
- {
- ServerInstance->SNO->WriteToSnoMask('L', "Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
- }
- num_lost_servers = 0;
- num_lost_users = 0;
- std::string from = Current->GetParent()->GetName()+" "+Current->GetName();
- SquitServer(from, Current);
- Current->Tidy();
- Current->GetParent()->DelChild(Current);
- delete Current;
- if (LocalSquit)
- ServerInstance->SNO->WriteToSnoMask('l', "Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
- else
- ServerInstance->SNO->WriteToSnoMask('L', "Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
+ ret = CMD_FAILURE;
+ server = server->GetParent();
}
- else
- ServerInstance->Logs->Log("m_spanningtree",DEFAULT,"Squit from unknown server");
+ else if (quitting->GetParent() != server)
+ throw ProtocolException("Attempted to SQUIT a non-directly connected server or the parent");
+
+ server->SQuitChild(quitting, params[1]);
+
+ // XXX: Return CMD_FAILURE when servers SQUIT themselves (i.e. :00S SQUIT 00S :Shutting down)
+ // to stop this message from being forwarded.
+ // The squit logic generates a SQUIT message with our sid as the source and sends it to the
+ // remaining servers.
+ return ret;
}
/** This function is called when we receive data from a remote
void TreeSocket::OnDataReady()
{
Utils->Creator->loopCall = true;
- /* While there is at least one new line in the buffer,
- * do something useful (we hope!) with it.
- */
- while (recvq.find("\n") != std::string::npos)
+ std::string line;
+ while (GetNextLine(line))
{
- std::string ret = recvq.substr(0,recvq.find("\n")-1);
- recvq = recvq.substr(recvq.find("\n")+1,recvq.length()-recvq.find("\n"));
- /* Use rfind here not find, as theres more
- * chance of the \r being near the end of the
- * string, not the start.
- */
- if (ret.find("\r") != std::string::npos)
- ret = recvq.substr(0,recvq.find("\r")-1);
- ProcessLine(ret);
+ std::string::size_type rline = line.find('\r');
+ if (rline != std::string::npos)
+ line.erase(rline);
+ if (line.find('\0') != std::string::npos)
+ {
+ SendError("Read null character from socket");
+ break;
+ }
+
+ try
+ {
+ ProcessLine(line);
+ }
+ catch (CoreException& ex)
+ {
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Error while processing: " + line);
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, ex.GetReason());
+ SendError(ex.GetReason() + " - check the log file for details");
+ }
+
+ if (!getError().empty())
+ break;
}
+ if (LinkState != CONNECTED && recvq.length() > 4096)
+ SendError("RecvQ overrun (line too long)");
Utils->Creator->loopCall = false;
}