Shuffle the modules about a bit.

1 files changed, 0 insertions, 458 deletions

diff --git a/src/modules/m_spanningtree/treesocket2.cpp b/src/modules/m_spanningtree/treesocket2.cpp
deleted file mode 100644
index eae8cbe21..000000000
--- a/src/modules/m_spanningtree/treesocket2.cpp
+++ /dev/null
@@ -1,458 +0,0 @@
-/*
- * InspIRCd -- Internet Relay Chat Daemon
- *
- *   Copyright (C) 2019 linuxdaemon <linuxdaemon.irc@gmail.com>
- *   Copyright (C) 2018-2024 Sadie Powell <sadie@witchery.services>
- *   Copyright (C) 2012-2016, 2018 Attila Molnar <attilamolnar@hush.com>
- *   Copyright (C) 2012 Robby <robby@chatbelgie.be>
- *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
- *   Copyright (C) 2008, 2012 Robin Burchell <robin+git@viroteck.net>
- *   Copyright (C) 2007-2008 Dennis Friis <peavey@inspircd.org>
- *   Copyright (C) 2007-2008 Craig Edwards <brain@inspircd.org>
- *
- * 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 "timeutils.h"
-
-#include "main.h"
-#include "utils.h"
-#include "treeserver.h"
-#include "treesocket.h"
-#include "resolvers.h"
-#include "commands.h"
-
-/* Handle ERROR command */
-void TreeSocket::Error(CommandBase::Params& params)
-{
-	const std::string msg = params.empty() ? "" : params[0];
-	SetError("received ERROR " + msg);
-}
-
-void TreeSocket::Split(const std::string& line, std::string& tags, std::string& prefix, std::string& command, CommandBase::Params& params)
-{
-	std::string token;
-	irc::tokenstream tokens(line);
-
-	if (!tokens.GetMiddle(token))
-		return;
-
-	if (token[0] == '@')
-	{
-		if (token.length() <= 1)
-		{
-			this->SendError("BUG: Received a message with empty tags: " + line);
-			return;
-		}
-
-		tags.assign(token, 1, std::string::npos);
-		if (!tokens.GetMiddle(token))
-		{
-			this->SendError("BUG: Received a message with no command: " + line);
-			return;
-		}
-	}
-
-	if (token[0] == ':')
-	{
-		if (token.length() <= 1)
-		{
-			this->SendError("BUG: Received a message with an empty prefix: " + line);
-			return;
-		}
-
-		prefix.assign(token, 1, std::string::npos);
-		if (!tokens.GetMiddle(token))
-		{
-			this->SendError("BUG: Received a message with no command: " + line);
-			return;
-		}
-	}
-
-	command.assign(token);
-	while (tokens.GetTrailing(token))
-		params.push_back(token);
-}
-
-void TreeSocket::ProcessLine(std::string& line)
-{
-	std::string tags;
-	std::string prefix;
-	std::string command;
-	CommandBase::Params params;
-
-	ServerInstance->Logs.RawIO(MODNAME, "S[{}] I {}", GetFd(), line);
-
-	Split(line, tags, prefix, command, params);
-
-	if (command.empty())
-		return;
-
-	switch (this->LinkState)
-	{
-		case WAIT_AUTH_1:
-			/*
-			 * State WAIT_AUTH_1:
-			 *  Waiting for SERVER command from remote server. Server initiating
-			 *  the connection sends the first SERVER command, listening server
-			 *  replies with theirs if its happy, then if the initiator is happy,
-			 *  it starts to send its net sync, which starts the merge, otherwise
-			 *  it sends an ERROR.
-			 */
-			if (command == "PASS")
-			{
-				/*
-				 * Ignore this silently. Some services packages insist on sending PASS, even
-				 * when it is not required (i.e. by us). We have to ignore this here, otherwise
-				 * as it's an unknown command (effectively), it will cause the connection to be
-				 * closed, which probably isn't what people want. -- w00t
-				 */
-			}
-			else if (command == "SERVER")
-			{
-				this->Inbound_Server(params);
-			}
-			else if (command == "ERROR")
-			{
-				this->Error(params);
-			}
-			else if (command == "USER")
-			{
-				this->SendError("Client connections to this port are prohibited.");
-			}
-			else if (command == "CAPAB")
-			{
-				this->Capab(params);
-			}
-			else
-			{
-				this->SendError("Invalid command in negotiation phase: " + command);
-			}
-		break;
-		case WAIT_AUTH_2:
-			/*
-			 * State WAIT_AUTH_2:
-			 *  We have sent SERVER to the other side of the connection. Now we're waiting for them to start BURST.
-			 *  The other option at this stage of things, of course, is for them to close our connection thanks
-			 *  to invalid credentials.. -- w
-			 */
-			if (command == "SERVER")
-			{
-				/*
-				 * Connection is either attempting to re-auth itself (stupid) or sending netburst without sending BURST.
-				 * Both of these aren't allowable, so block them here. -- w
-				 */
-				this->SendError("You may not re-authenticate or commence netburst without sending BURST.");
-			}
-			else if (command == "BURST")
-			{
-				if (!params.empty())
-				{
-					time_t them = ServerCommand::ExtractTS(params[0]);
-					time_t delta = them - ServerInstance->Time();
-					if ((delta < -15) || (delta > 15))
-					{
-						ServerInstance->SNO.WriteGlobalSno('l', "\002ERROR\002: Your clocks are off by {} seconds (this is more than fifteen seconds). Link aborted, \002PLEASE SYNC YOUR CLOCKS!\002", labs((long)delta));
-						SendError("Your clocks are out by "+ConvToStr(labs((long)delta))+" seconds (this is more than fifteen seconds). Link aborted, PLEASE SYNC YOUR CLOCKS!");
-						return;
-					}
-					else if ((delta < -5) || (delta > 5))
-					{
-						ServerInstance->SNO.WriteGlobalSno('l', "\002WARNING\002: Your clocks are off by {} seconds. Please consider syncing your clocks.", labs((long)delta));
-					}
-				}
-
-				// Check for duplicate server name/sid again, it's possible that a new
-				// server was introduced while we were waiting for them to send BURST.
-				// (we do not reserve their server name/sid when they send SERVER, we do it now)
-				if (!CheckDuplicate(capab->name, capab->sid))
-					return;
-
-				FinishAuth(capab->name, capab->sid, capab->description, capab->hidden);
-			}
-			else if (command == "ERROR")
-			{
-				this->Error(params);
-			}
-			else if (command == "CAPAB")
-			{
-				this->Capab(params);
-			}
-			else
-			{
-				ServerInstance->Logs.Debug(MODNAME, "Unknown command from fd {} in the WAIT_AUTH_2 phase: {}",
-					GetFd(), command);
-			}
-
-		break;
-		case CONNECTING:
-			/*
-			 * State CONNECTING:
-			 *  We're connecting (OUTGOING) to another server. They are in state WAIT_AUTH_1 until they verify
-			 *  our credentials, when they proceed into WAIT_AUTH_2 and send SERVER to us. We then send BURST
-			 *  + our netburst, which will put them into CONNECTED state. -- w
-			 */
-			if (command == "SERVER")
-			{
-				// Our credentials have been accepted, send netburst. (this puts US into the CONNECTED state)
-				this->Outbound_Reply_Server(params);
-			}
-			else if (command == "ERROR")
-			{
-				this->Error(params);
-			}
-			else if (command == "CAPAB")
-			{
-				this->Capab(params);
-			}
-			else
-			{
-				ServerInstance->Logs.Debug(MODNAME, "Unknown command from fd {} in the CONNECTING phase: {}",
-					GetFd(), command);
-			}
-		break;
-
-		case CONNECTED:
-			/*
-			 * State CONNECTED:
-			 *  Credentials have been exchanged, we've gotten their 'BURST' (or sent ours).
-			 *  Anything from here on should be accepted a little more reasonably.
-			 */
-			this->ProcessConnectedLine(tags, prefix, command, params);
-		break;
-
-		case DYING:
-		break;
-	}
-}
-
-User* TreeSocket::FindSource(const std::string& prefix, const std::string& command)
-{
-	// Empty prefix means the source is the directly connected server that sent this command
-	if (prefix.empty())
-		return MyRoot->ServerUser;
-
-	if (prefix.size() == 3)
-	{
-		// Prefix looks like a sid
-		TreeServer* server = Utils->FindServerID(prefix);
-		if (server)
-			return server->ServerUser;
-	}
-	else
-	{
-		// If the prefix string is a uuid FindUUID() returns the appropriate User object
-		auto* user = ServerInstance->Users.FindUUID(prefix);
-		if (user)
-			return user;
-	}
-
-	// Some implementations wrongly send a server name as prefix occasionally, handle that too for now
-	TreeServer* const server = Utils->FindServer(prefix);
-	if (server)
-		return server->ServerUser;
-
-	/* It is important that we don't close the link here, unknown prefix can occur
-	 * due to various race conditions such as the KILL message for a user somehow
-	 * crossing the users QUIT further upstream from the server. Thanks jilles!
-	 */
-
-	if ((prefix.length() == UIDGenerator::UUID_LENGTH) && (isdigit(prefix[0])) &&
-		((command == "FMODE") || (command == "MODE") || (command == "KICK") || (command == "TOPIC") || (command == "KILL") || (command == "ADDLINE") || (command == "DELLINE")))
-	{
-		/* Special case, we cannot drop these commands as they've been committed already on a
-		 * part of the network by the time we receive them, so in this scenario pretend the
-		 * command came from a server to avoid desync.
-		 */
-
-		TreeServer* const usersserver = Utils->FindServerID(prefix.substr(0, 3));
-		if (usersserver)
-			return usersserver->ServerUser;
-		return this->MyRoot->ServerUser;
-	}
-
-	// Unknown prefix
-	return nullptr;
-}
-
-void TreeSocket::ProcessTag(User* source, const std::string& tag, ClientProtocol::TagMap& tags)
-{
-	std::string tagkey;
-	std::string tagval;
-	const std::string::size_type p = tag.find('=');
-	if (p != std::string::npos)
-	{
-		// Tag has a value
-		tagkey.assign(tag, 0, p);
-		tagval.assign(tag, p + 1, std::string::npos);
-	}
-	else
-	{
-		tagkey.assign(tag);
-	}
-
-	for (auto* subscriber : Utils->Creator->tagevprov.GetSubscribers())
-	{
-		ClientProtocol::MessageTagProvider* const tagprov = static_cast<ClientProtocol::MessageTagProvider*>(subscriber);
-		const ModResult res = tagprov->OnProcessTag(source, tagkey, tagval);
-		if (res == MOD_RES_ALLOW)
-			tags.emplace(tagkey, ClientProtocol::MessageTagData(tagprov, tagval));
-		else if (res == MOD_RES_DENY)
-			break;
-	}
-}
-
-void TreeSocket::ProcessConnectedLine(std::string& taglist, std::string& prefix, std::string& command, CommandBase::Params& params)
-{
-	User* who = FindSource(prefix, command);
-	if (!who)
-	{
-		ServerInstance->Logs.Debug(MODNAME, "Command '{}' from unknown prefix '{}'! Dropping entire command.", command, prefix);
-		return;
-	}
-
-	/*
-	 * Check for fake direction here, and drop any instances that are found.
-	 * What is fake direction? Imagine the following server setup:
-	 *    0AA <-> 0AB <-> 0AC
-	 * Fake direction would be 0AC sending a message to 0AB claiming to be from
-	 * 0AA, or something similar. Basically, a message taking a path that *cannot*
-	 * be correct.
-	 *
-	 * When would this be seen?
-	 * Well, hopefully never. It could be caused by race conditions, bugs, or
-	 * "miscreant" servers, though, so let's check anyway. -- w
-	 *
-	 * We also check here for totally invalid prefixes (prefixes that are neither
-	 * a valid SID or a valid UUID, so that invalid UUID or SID never makes it
-	 * to the higher level functions. -- B
-	 */
-	TreeServer* const server = TreeServer::Get(who);
-	if (server->GetSocket() != this)
-	{
-		ServerInstance->Logs.Debug(MODNAME, "Protocol violation: Fake direction '{}' from connection '{}'", prefix, linkID);
-		return;
-	}
-
-	// Translate commands coming from servers using an older protocol
-	if (proto_version < PROTO_NEWEST)
-	{
-		if (!PreProcessOldProtocolMessage(who, command, params))
-			return;
-	}
-
-	ServerCommand* scmd = Utils->Creator->CmdManager.GetHandler(command);
-	CommandBase* cmdbase = scmd;
-	Command* cmd = nullptr;
-	if (!scmd)
-	{
-		// Not a special server-to-server command
-		cmd = ServerInstance->Parser.GetHandler(command);
-		if (!cmd)
-		{
-			if (command == "ERROR")
-			{
-				this->Error(params);
-				return;
-			}
-			else if (command == "BURST")
-			{
-				// This is sent even when there is no need for it, drop it here for now
-				return;
-			}
-
-			throw ProtocolException("Unknown command: " + command);
-		}
-		cmdbase = cmd;
-	}
-
-	if (params.size() < cmdbase->min_params)
-		throw ProtocolException("Insufficient parameters");
-
-	if ((!params.empty()) && (params.back().empty()) && (!cmdbase->allow_empty_last_param))
-	{
-		// the last param is empty and the command handler doesn't allow that, check if there will be enough params if we drop the last
-		if (params.size()-1 < cmdbase->min_params)
-			return;
-		params.pop_back();
-	}
-
-	CmdResult res;
-	ClientProtocol::TagMap tags;
-	std::string tag;
-	irc::sepstream tagstream(taglist, ';');
-	while (tagstream.GetToken(tag))
-		ProcessTag(who, tag, tags);
-
-	CommandBase::Params newparams(params, tags);
-
-	if (scmd)
-		res = scmd->Handle(who, newparams);
-	else
-	{
-		res = cmd->Handle(who, newparams);
-		if (res == CmdResult::INVALID)
-			throw ProtocolException("Error in command handler");
-	}
-
-	if (res == CmdResult::SUCCESS)
-		Utils->RouteCommand(server->GetRoute(), cmdbase, newparams, who);
-}
-
-void TreeSocket::OnTimeout()
-{
-	ServerInstance->SNO.WriteGlobalSno('l', "CONNECT: Connection to \002{}\002 timed out.", linkID);
-}
-
-void TreeSocket::Close()
-{
-	if (!HasFd())
-		return;
-
-	ServerInstance->GlobalCulls.AddItem(this);
-	this->BufferedSocket::Close();
-	SetError("Remote host closed connection");
-
-	// Connection closed.
-	// If the connection is fully up (state CONNECTED)
-	// then propagate a netsplit to all peers.
-	if (MyRoot && !MyRoot->IsDead())
-		MyRoot->SQuit(GetError(), true);
-	else
-		ServerInstance->SNO.WriteGlobalSno('l', "Connection to '\002{}\002' failed.", linkID);
-
-	time_t server_uptime = ServerInstance->Time() - this->age;
-	if (server_uptime)
-	{
-		std::string timestr = Duration::ToString(server_uptime);
-		ServerInstance->SNO.WriteGlobalSno('l', "Connection to '\002{}\002' was established for {}", linkID, timestr);
-	}
-}
-
-void TreeSocket::FinishAuth(const std::string& remotename, const std::string& remotesid, const std::string& remotedesc, bool hidden)
-{
-	this->LinkState = CONNECTED;
-	Utils->timeoutlist.erase(this);
-
-	linkID = remotename;
-
-	MyRoot = new TreeServer(remotename, remotedesc, remotesid, Utils->TreeRoot, this, hidden);
-
-	// Mark the server as bursting
-	MyRoot->BeginBurst();
-	this->DoBurst(MyRoot);
-
-	CommandServer::Builder(MyRoot).Forward(MyRoot);
-}