/*
* InspIRCd -- Internet Relay Chat Daemon
*
+ * Copyright (C) 2013, 2017-2020 Sadie Powell <sadie@witchery.services>
+ * Copyright (C) 2012-2016 Attila Molnar <attilamolnar@hush.com>
+ * Copyright (C) 2012, 2019 Robby <robby@chatbelgie.be>
* 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>
+ * Copyright (C) 2007-2008, 2010 Craig Edwards <brain@inspircd.org>
+ * Copyright (C) 2007-2008 Dennis Friis <peavey@inspircd.org>
+ * Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
*
* 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
#include "inspircd.h"
+#include "iohook.h"
#include "main.h"
-#include "modules/spanningtree.h"
#include "utils.h"
#include "treeserver.h"
#include "link.h"
#include "treesocket.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, Link* link, Autoconnect* myac, const std::string& ipaddr)
- : Utils(Util)
+TreeSocket::TreeSocket(Link* link, Autoconnect* myac, const irc::sockets::sockaddrs& dest)
+ : linkID(link->Name)
+ , LinkState(CONNECTING)
+ , MyRoot(NULL)
+ , proto_version(0)
+ , burstsent(false)
+ , age(ServerInstance->Time())
{
- age = ServerInstance->Time();
- linkID = assign(link->Name);
capab = new CapabData;
capab->link = link;
capab->ac = myac;
capab->capab_phase = 0;
- MyRoot = NULL;
- proto_version = 0;
- ConnectionFailureShown = false;
- LinkState = CONNECTING;
- if (!link->Hook.empty())
+ capab->remotesa = dest;
+
+ irc::sockets::sockaddrs bind;
+ memset(&bind, 0, sizeof(bind));
+ if (!link->Bind.empty() && (dest.family() == AF_INET || dest.family() == AF_INET6))
{
- ServiceProvider* prov = ServerInstance->Modules->FindService(SERVICE_IOHOOK, link->Hook);
- if (!prov)
+ if (!irc::sockets::aptosa(link->Bind, 0, bind))
+ {
+ state = I_ERROR;
+ SetError("Bind address '" + link->Bind + "' is not a valid IPv4 or IPv6 address");
+ TreeSocket::OnError(I_ERR_BIND);
+ return;
+ }
+ else if (bind.family() != dest.family())
{
- SetError("Could not find hook '" + link->Hook + "' for connection to " + linkID);
+ state = I_ERROR;
+ SetError("Bind address '" + bind.addr() + "' is not the same address family as destination address '" + dest.addr() + "'");
+ TreeSocket::OnError(I_ERR_BIND);
return;
}
- AddIOHook(prov->creator);
}
- DoConnect(ipaddr, link->Port, link->Timeout, link->Bind);
- Utils->timeoutlist[this] = std::pair<std::string, int>(linkID, link->Timeout);
+
+ DoConnect(dest, bind, link->Timeout);
+ Utils->timeoutlist[this] = std::pair<std::string, unsigned 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, ListenSocket* 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())
{
capab = new CapabData;
capab->capab_phase = 0;
- MyRoot = NULL;
- age = ServerInstance->Time();
- LinkState = WAIT_AUTH_1;
- proto_version = 0;
- ConnectionFailureShown = false;
- linkID = "inbound from " + client->addr();
-
- FOREACH_MOD(I_OnHookIO, OnHookIO(this, via));
- if (GetIOHook())
- GetIOHook()->OnStreamSocketAccept(this, client, server);
- SendCapabilities(1);
+ capab->remotesa = *client;
- Utils->timeoutlist[this] = std::pair<std::string, int>(linkID, 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, unsigned int>(linkID, 30);
}
void TreeSocket::CleanNegotiationInfo()
TreeSocket::~TreeSocket()
{
- if (capab)
- delete capab;
+ 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)
{
- ServerInstance->SNO->WriteGlobalSno('l', "Connection to \2%s\2[%s] started.", linkID.c_str(),
+ if (!capab->link->Hook.empty())
+ {
+ ServiceProvider* prov = ServerInstance->Modules->FindService(SERVICE_IOHOOK, capab->link->Hook);
+ if (!prov)
+ {
+ 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 \002%s\002[%s] started.", linkID.c_str(),
(capab->link->HiddenFromStats ? "<hidden>" : capab->link->IPAddr.c_str()));
this->SendCapabilities(1);
}
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)
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, int& num_lost_servers, int& num_lost_users)
+CmdResult CommandSQuit::HandleServer(TreeServer* server, CommandBase::Params& params)
{
- std::string servername = Current->GetName();
- ServerInstance->Logs->Log("m_spanningtree", LOG_DEBUG, "SquitServer for %s from %s",
- servername.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, num_lost_servers, num_lost_users);
+ 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());
+ ret = CMD_FAILURE;
+ server = server->GetParent();
+ }
+ else if (quitting->GetParent() != server)
+ throw ProtocolException("Attempted to SQUIT a non-directly connected server or the parent");
- if (!Current->GetSocket() || Current->GetSocket()->Introduced())
- {
- parameterlist params;
- params.push_back(Current->GetID());
- params.push_back(":"+reason);
- Utils->DoOneToAllButSender(Current->GetParent()->GetID(),"SQUIT",params,Current->GetName());
- }
+ server->SQuitChild(quitting, params[1]);
- if (Current->GetParent() == Utils->TreeRoot)
- {
- ServerInstance->SNO->WriteGlobalSno('l', "Server \002"+Current->GetName()+"\002 split: "+reason);
- LocalSquit = true;
- }
- else
- {
- ServerInstance->SNO->WriteGlobalSno('L', "Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
- }
- int num_lost_servers = 0;
- int num_lost_users = 0;
- std::string from = Current->GetParent()->GetName()+" "+Current->GetName();
- SquitServer(from, Current, num_lost_servers, num_lost_users);
- ServerInstance->SNO->WriteToSnoMask(LocalSquit ? 'l' : '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" : "");
- Current->Tidy();
- Current->GetParent()->DelChild(Current);
- Current->cull();
- delete Current;
- if (Current == MyRoot)
- {
- MyRoot = NULL;
- Close();
- }
- }
- else
- ServerInstance->Logs->Log("m_spanningtree", LOG_DEFAULT, "Squit from unknown server");
+ // 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
{
std::string::size_type rline = line.find('\r');
if (rline != std::string::npos)
- line = line.substr(0,rline);
+ line.erase(rline);
if (line.find('\0') != std::string::npos)
{
SendError("Read null character from socket");
break;
}
- ProcessLine(line);
+
+ 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;
}
SendError("RecvQ overrun (line too long)");
Utils->Creator->loopCall = false;
}
-
-bool TreeSocket::Introduced()
-{
- return (capab == NULL);
-}
projects / user / henk / code / inspircd.git / blobdiff