Shuffle the modules about a bit.

1 files changed, 0 insertions, 643 deletions

diff --git a/src/modules/m_spanningtree/capab.cpp b/src/modules/m_spanningtree/capab.cpp
deleted file mode 100644
index f3381b1c3..000000000
--- a/src/modules/m_spanningtree/capab.cpp
+++ /dev/null
@@ -1,643 +0,0 @@
-/*
- * InspIRCd -- Internet Relay Chat Daemon
- *
- *   Copyright (C) 2017-2024 Sadie Powell <sadie@witchery.services>
- *   Copyright (C) 2013-2016 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 Robin Burchell <robin+git@viroteck.net>
- *   Copyright (C) 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 "dynamic.h"
-#include "modules/extban.h"
-#include "utility/map.h"
-
-#include "treeserver.h"
-#include "utils.h"
-#include "link.h"
-#include "main.h"
-
-namespace
-{
-	// A map which holds the difference between local and remote tokens.
-	typedef std::map<std::string, std::pair<std::optional<std::string>, std::optional<std::string>>, irc::insensitive_swo> TokenDiff;
-
-	// Builds a list of the local modules with the specified property.
-	CapabData::ModuleMap BuildModuleList(ModuleFlags property, uint16_t protocol)
-	{
-		CapabData::ModuleMap modules;
-		for (const auto& [name, module] : ServerInstance->Modules.GetModules())
-		{
-			if (!(module->properties & property))
-				continue;
-
-			std::string modname;
-			size_t endpos = name.length() - strlen(DLL_EXTENSION);
-			if (protocol <= PROTO_INSPIRCD_3)
-			{
-				// Replace m_foo.dylib with m_foo.so
-				modname.append(name.substr(0, endpos)).append(".so");
-
-				// Handle renamed modules.
-				if (insp::equalsci(modname, "m_cloak.so") && ServerInstance->Modules.Find("cloak_md5"))
-					modname = "m_cloaking.so";
-				else if (insp::equalsci(modname, "m_realnameban.so"))
-					modname = "m_gecosban.so";
-				else if (insp::equalsci(modname, "m_account.so") && ServerInstance->Modules.Find("services"))
-					modname = "m_services_account.so";
-				else if (insp::equalsci(modname, "m_services.so"))
-				{
-					modules["m_svshold.so"];
-					modules["m_topiclock.so"];
-					continue;
-				}
-
-				// Handle modules with changed properties.
-				else if (insp::equalsci(modname, "m_globops.so"))
-					continue;  // This module was made VF_OPTCOMMON in v4.
-			}
-			else
-			{
-				// Replace m_foo.dylib with foo
-				size_t startpos = name.compare(0, 2, "m_", 2) ? 0 : 2;
-				modname.assign(name.substr(startpos, endpos - startpos));
-			}
-
-			modules[modname] = SpanningTreeUtilities::BuildLinkString(protocol, module);
-		}
-		return modules;
-	}
-
-	// Compares the module data sent by a remote server to that of the local server.
-	bool CompareModuleData(Module* mod, const Module::LinkData& otherdata, std::ostringstream& diffconfig)
-	{
-		Module::LinkDataDiff datadiff;
-		mod->CompareLinkData(otherdata, datadiff);
-		if (!datadiff.empty())
-		{
-			diffconfig << ' ' << ModuleManager::ShrinkModName(mod->ModuleFile) << " (";
-			bool first = true;
-			for (const auto& [key, values] : datadiff)
-			{
-				// Keys are separated by commas.
-				if (!first)
-					diffconfig << ", ";
-				first = false;
-
-				diffconfig << key;
-				if (values.first && values.second)
-				{
-					// Exists on both but with a different value.
-					diffconfig << " set to " <<  *values.first << " here and " << *values.second << " there";
-				}
-				else if (values.first && !values.second)
-				{
-					// Only exists on the local server.
-					diffconfig << " only set here";
-				}
-				else if (!values.first && values.second)
-				{
-					// Only exists on the remote server.
-					diffconfig << " only set there";
-				}
-			}
-
-			diffconfig << ')';
-			return false;
-		}
-
-		return true;
-	}
-
-	// Compares the lists of module on a remote v3 server to the local server.
-	bool CompareModulesOld(ModuleFlags property, const CapabData::ModuleMap& remote, std::ostringstream& diffconfig,
-		std::ostringstream& localmissing, std::ostringstream& remotemissing)
-	{
-		// Retrieve the local module list and compare to the remote.
-		CapabData::ModuleMap mymodules = BuildModuleList(property, PROTO_INSPIRCD_3);
-		TokenDiff modulediff;
-		insp::map::difference(mymodules, remote, modulediff);
-
-		for (const auto& [module, values] : modulediff)
-		{
-			if (values.first && values.second)
-			{
-				// Exists on both but with different link data.
-				diffconfig << ' ' << module << " (" << *values.first << " here, " << *values.second << " there)";
-			}
-			else if (values.first && !values.second)
-			{
-				// Only exists on the local server.
-				remotemissing << ' ' << module;
-			}
-			else if (!values.first && values.second)
-			{
-				// Only exists on the remote server.
-				localmissing << ' ' << module;
-			}
-		}
-
-		return modulediff.empty();
-	}
-
-	// Compares the lists of module on a remote v4+ server to the local server.
-	bool CompareModulesNew(ModuleFlags property, const CapabData::ModuleMap& remote, std::ostringstream& diffconfig,
-		std::ostringstream& localmissing, std::ostringstream& remotemissing)
-	{
-		// Retrieve the local module list.
-		bool okay = true;
-		ModuleManager::ModuleMap local;
-		for (const auto& [name, module] : ServerInstance->Modules.GetModules())
-		{
-			if (module->properties & property)
-				local[ModuleManager::ShrinkModName(name)] = module;
-		}
-
-		for (const auto& [name, linkdata] : remote)
-		{
-			auto moditer = local.find(name);
-			if (moditer == local.end())
-			{
-				// Only exists on the remote server.
-				localmissing << ' ' << name;
-				okay = false;
-				continue;
-			}
-
-			// Parse the remote link data.
-			Module::LinkData otherdata;
-			irc::sepstream datastream(linkdata, '&');
-			for (std::string datapair; datastream.GetToken(datapair); )
-			{
-				size_t split = datapair.find('=');
-				if (split == std::string::npos)
-					otherdata.emplace(datapair, "");
-				else
-					otherdata.emplace(datapair.substr(0, split), Percent::Decode(datapair.substr(split + 1)));
-			}
-
-			// Compare the link data.
-			if (!CompareModuleData(moditer->second, otherdata, diffconfig))
-				okay = false;
-			local.erase(moditer);
-		}
-
-		for (const auto& [name, _] : local)
-		{
-			// Only exists on the local server.
-			remotemissing << ' ' << name;
-			okay = false;
-		}
-
-		return okay;
-	}
-
-	// Compares the lists of module on a remote server to the local server.
-	bool CompareModules(ModuleFlags property, uint16_t protocol, std::optional<CapabData::ModuleMap>& remote,
-		std::ostringstream& out)
-	{
-		// If the remote didn't send a module list then don't compare.
-		if (!remote)
-			return true;
-
-		bool okay;
-		std::ostringstream diffconfig;
-		std::ostringstream localmissing;
-		std::ostringstream remotemissing;
-		if (protocol <= PROTO_INSPIRCD_3)
-			okay = CompareModulesOld(property, *remote, diffconfig, localmissing, remotemissing);
-		else
-			okay = CompareModulesNew(property, *remote, diffconfig, localmissing, remotemissing);
-
-		if (!diffconfig.str().empty())
-			out << " Loaded on both with different config:" << diffconfig.str() << '.';
-		if (!localmissing.str().empty())
-			out << " Not loaded on the local server:" << localmissing.str() << '.';
-		if (!remotemissing.str().empty())
-			out << " Not loaded on the remote server:" << remotemissing.str() << '.';
-
-		return okay;
-	}
-
-	// Generates a module list in the format "m_foo.so=bar m_bar.so=baz".
-	std::string FormatModules(ModuleFlags property, uint16_t protocol)
-	{
-		std::ostringstream modules;
-		CapabData::ModuleMap mymodules = BuildModuleList(property, protocol);
-		for (const auto& [module, linkdata] : mymodules)
-		{
-			modules << module;
-			if (!linkdata.empty())
-				modules << '=' << linkdata;
-			modules << ' ';
-		}
-		return modules.str();
-	}
-
-	// Parses a module list in the format "m_foo.so=bar m_bar.so=baz" to a map.
-	void ParseModules(const std::string& modlist, std::optional<CapabData::ModuleMap>& out)
-	{
-		CapabData::ModuleMap& map = out ? *out : out.emplace();
-		irc::spacesepstream modstream(modlist);
-		for (std::string mod; modstream.GetToken(mod); )
-		{
-			size_t split = mod.find('=');
-			if (split == std::string::npos)
-				map.emplace(mod, "");
-			else
-				map.emplace(mod.substr(0, split), mod.substr(split + 1));
-		}
-	}
-}
-
-std::string TreeSocket::BuildModeList(ModeType mtype)
-{
-	std::vector<std::string> modes;
-	for (const auto& [_, mh] : ServerInstance->Modes.GetModes(mtype))
-	{
-		const PrefixMode* const pm = mh->IsPrefixMode();
-		std::string mdesc;
-		if (pm)
-			mdesc.append("prefix:").append(ConvToStr(pm->GetPrefixRank())).push_back(':');
-		else if (mh->IsListMode())
-			mdesc.append("list:");
-		else if (mh->NeedsParam(true))
-			mdesc.append(mh->NeedsParam(false) ? "param:" : "param-set:");
-		else
-			mdesc.append("simple:");
-		mdesc.append(mh->name);
-		mdesc.push_back('=');
-		if (pm)
-		{
-			if (pm->GetPrefix())
-				mdesc.push_back(pm->GetPrefix());
-		}
-		mdesc.push_back(mh->GetModeChar());
-		modes.push_back(mdesc);
-	}
-	std::sort(modes.begin(), modes.end());
-	return insp::join(modes);
-}
-
-bool TreeSocket::BuildExtBanList(std::string& out)
-{
-	ExtBan::ManagerRef extbanmgr(Utils->Creator);
-	if (!extbanmgr)
-		return false;
-
-	const ExtBan::Manager::LetterMap& extbans = extbanmgr->GetLetterMap();
-	for (ExtBan::Manager::LetterMap::const_iterator iter = extbans.begin(); iter != extbans.end(); ++iter)
-	{
-		if (iter != extbans.begin())
-			out.push_back(' ');
-
-		const ExtBan::Base* extban = iter->second;
-		switch (extban->GetType())
-		{
-			case ExtBan::Type::ACTING:
-				out.append("acting:");
-				break;
-			case ExtBan::Type::MATCHING:
-				out.append("matching:");
-				break;
-		}
-
-		out.append(extban->GetName())
-			.append("=")
-			.push_back(extban->GetLetter());
-	}
-	return true;
-}
-
-void TreeSocket::SendCapabilities(int phase)
-{
-	if (capab->capab_phase >= phase)
-		return;
-
-	if (capab->capab_phase < 1 && phase >= 1)
-		WriteLine("CAPAB START " + ConvToStr(PROTO_NEWEST));
-
-	capab->capab_phase = phase;
-	if (phase < 2)
-		return;
-
-	WriteLine("CAPAB MODULES :" + FormatModules(VF_COMMON, proto_version));
-	WriteLine("CAPAB MODSUPPORT :" + FormatModules(VF_OPTCOMMON, proto_version));
-	WriteLine("CAPAB CHANMODES :" + BuildModeList(MODETYPE_CHANNEL));
-	WriteLine("CAPAB USERMODES :" + BuildModeList(MODETYPE_USER));
-
-	std::unordered_map<std::string, std::string> capabilities = {
-		{ "CASEMAPPING", ServerInstance->Config->CaseMapping                  },
-		{ "MAXAWAY",     ConvToStr(ServerInstance->Config->Limits.MaxAway)    },
-		{ "MAXCHANNEL",  ConvToStr(ServerInstance->Config->Limits.MaxChannel) },
-		{ "MAXHOST",     ConvToStr(ServerInstance->Config->Limits.MaxHost)    },
-		{ "MAXKICK",     ConvToStr(ServerInstance->Config->Limits.MaxKick)    },
-		{ "MAXLINE",     ConvToStr(ServerInstance->Config->Limits.MaxLine)    },
-		{ "MAXMODES",    ConvToStr(ServerInstance->Config->Limits.MaxModes)   },
-		{ "MAXNICK",     ConvToStr(ServerInstance->Config->Limits.MaxNick)    },
-		{ "MAXQUIT",     ConvToStr(ServerInstance->Config->Limits.MaxQuit)    },
-		{ "MAXREAL",     ConvToStr(ServerInstance->Config->Limits.MaxReal)    },
-		{ "MAXTOPIC",    ConvToStr(ServerInstance->Config->Limits.MaxTopic)   },
-		{ "MAXUSER",     ConvToStr(ServerInstance->Config->Limits.MaxUser)    },
-	};
-
-	if (proto_version <= PROTO_INSPIRCD_3)
-	{
-		// 1205 HACK: Allow services to know what extbans exist.
-		ExtBan::ManagerRef extbanmgr(Utils->Creator);
-		if (extbanmgr)
-		{
-			std::string extbans;
-			for (const auto& [extban, _] : extbanmgr->GetLetterMap())
-				extbans.push_back(extban);
-
-			if (!extbans.empty())
-				capabilities["EXTBANS"] = extbans;
-		}
-
-		// These have been renamed in the 1206 protocol.
-		capabilities["CHANMAX"]  = capabilities["MAXCHANNEL"];
-		capabilities["IDENTMAX"] = capabilities["MAXUSER"];
-		capabilities["NICKMAX"]  = capabilities["MAXNICK"];
-
-		// Advertise the presence or absence of the globops snomask in CAPAB CAPABILITIES. Services
-		// needs to know about it and since m_globops is not marked as VF_(OPT)COMMON in v3 we
-		// advertise it here to not break linking to previous versions.
-		capabilities["GLOBOPS"] = ConvToStr(!!ServerInstance->Modules.Find("globops"));
-
-	}
-	else
-	{
-		std::string extbans;
-		if (BuildExtBanList(extbans))
-			WriteLine("CAPAB EXTBANS :" + extbans);
-	}
-
-	// If SHA256 hashing support is available then send a challenge token.
-	if (ServerInstance->Modules.FindService(SERVICE_DATA, "hash/sha256"))
-	{
-		SetOurChallenge(ServerInstance->GenRandomStr(20));
-		capabilities["CHALLENGE"] = GetOurChallenge();
-	}
-
-	std::stringstream capabilitystr;
-	char separator = ':';
-	for (const auto& [capkey, capvalue] : capabilities)
-	{
-		capabilitystr << separator << capkey << '=' << capvalue;
-		separator = ' ';
-	}
-
-	this->WriteLine("CAPAB CAPABILITIES " + capabilitystr.str());
-	this->WriteLine("CAPAB END");
-}
-
-/* Isolate and return the elements that are different between two comma separated lists */
-void TreeSocket::ListDifference(const std::string& one, const std::string& two, char sep,
-		std::string& mleft, std::string& mright)
-{
-	std::set<std::string> values;
-	irc::sepstream sepleft(one, sep);
-	irc::sepstream sepright(two, sep);
-	std::string item;
-	while (sepleft.GetToken(item))
-	{
-		values.insert(item);
-	}
-	while (sepright.GetToken(item))
-	{
-		if (!values.erase(item))
-		{
-			mright.push_back(sep);
-			mright.append(item);
-		}
-	}
-	for (const auto& value : values)
-	{
-		mleft.push_back(sep);
-		mleft.append(value);
-	}
-}
-
-bool TreeSocket::Capab(const CommandBase::Params& params)
-{
-	if (params.empty())
-	{
-		this->SendError("Invalid number of parameters for CAPAB - Mismatched version");
-		return false;
-	}
-	if (irc::equals(params[0], "START"))
-	{
-		capab->requiredmodules.reset();
-		capab->optionalmodules.reset();
-		capab->CapKeys.clear();
-
-		if (params.size() > 1)
-			proto_version = ConvToNum<uint16_t>(params[1]);
-
-		if (proto_version < PROTO_OLDEST)
-		{
-			SendError("CAPAB negotiation failed: Server is using protocol version "
-				+ (proto_version ? ConvToStr(proto_version) : "1201 or older")
-				+ " which is too old to link with this server (protocol versions "
-				+ ConvToStr(PROTO_OLDEST) + " to " + ConvToStr(PROTO_NEWEST) + " are supported)");
-			return false;
-		}
-
-		SendCapabilities(2);
-	}
-	else if (irc::equals(params[0], "END"))
-	{
-		std::ostringstream errormsg;
-		if (!CompareModules(VF_COMMON, proto_version, this->capab->requiredmodules, errormsg))
-		{
-			SendError("CAPAB negotiation failed. Required modules incorrectly matched on these servers."
-				+ errormsg.str());
-			return false;
-		}
-		else if (!CompareModules(VF_OPTCOMMON, proto_version, this->capab->optionalmodules, errormsg))
-		{
-			if (Utils->AllowOptCommon)
-			{
-				ServerInstance->SNO.WriteToSnoMask('l', "Optional modules do not match. Some features may not work globally!"
-					+ errormsg.str());
-			}
-			else
-			{
-				SendError("CAPAB negotiation failed. Optional modules incorrectly matched on these servers and <options:allowmismatch> is not enabled."
-					+ errormsg.str());
-				return false;
-			}
-		}
-
-		if (!capab->ChanModes.empty())
-		{
-			if (capab->ChanModes != BuildModeList(MODETYPE_CHANNEL))
-			{
-				std::string diffIneed;
-				std::string diffUneed;
-				ListDifference(capab->ChanModes, BuildModeList(MODETYPE_CHANNEL), ' ', diffIneed, diffUneed);
-				if (diffIneed.length() || diffUneed.length())
-				{
-					std::string reason = "Channel modes not matched on these servers.";
-					if (diffIneed.length())
-						reason += " Not loaded here:" + diffIneed;
-					if (diffUneed.length())
-						reason += " Not loaded there:" + diffUneed;
-					this->SendError("CAPAB negotiation failed: " + reason);
-				}
-			}
-		}
-
-		if (!capab->UserModes.empty())
-		{
-			if (capab->UserModes != BuildModeList(MODETYPE_USER))
-			{
-				std::string diffIneed;
-				std::string diffUneed;
-				ListDifference(capab->UserModes, BuildModeList(MODETYPE_USER), ' ', diffIneed, diffUneed);
-				if (diffIneed.length() || diffUneed.length())
-				{
-					std::string reason = "User modes not matched on these servers.";
-					if (diffIneed.length())
-						reason += " Not loaded here:" + diffIneed;
-					if (diffUneed.length())
-						reason += " Not loaded there:" + diffUneed;
-					this->SendError("CAPAB negotiation failed: " + reason);
-				}
-			}
-		}
-
-		if (!capab->ExtBans.empty())
-		{
-			std::string myextbans;
-			if (BuildExtBanList(myextbans))
-			{
-				std::string missing_here;
-				std::string missing_there;
-				ListDifference(capab->ExtBans, myextbans, ' ', missing_here, missing_there);
-				if (!missing_here.empty() || !missing_there.empty())
-				{
-					if (Utils->AllowOptCommon)
-					{
-						ServerInstance->SNO.WriteToSnoMask('l',
-							"ExtBan lists do not match, some bans/exemptions may not work globally.{}{}{}{}",
-							missing_here.length() ? " Not loaded here:" : "", missing_here,
-							missing_there.length() ? " Not loaded there:" : "", missing_there);
-					}
-					else
-					{
-						std::string reason = "ExtBans not matched on these servers.";
-						if (missing_here.length())
-							reason += " Not loaded here:" + missing_here;
-						if (missing_there.length())
-							reason += " Not loaded there:" + missing_there;
-						this->SendError("CAPAB negotiation failed: " + reason);
-						return false;
-					}
-				}
-			}
-		}
-
-		if (this->capab->CapKeys.find("CASEMAPPING") != this->capab->CapKeys.end())
-		{
-			const std::string casemapping = this->capab->CapKeys.find("CASEMAPPING")->second;
-			if (casemapping != ServerInstance->Config->CaseMapping)
-			{
-				std::string reason = "The casemapping of the remote server differs to that of the local server."
-					" Local casemapping: " + ServerInstance->Config->CaseMapping +
-					" Remote casemapping: " + casemapping;
-				this->SendError("CAPAB negotiation failed: " + reason);
-				return false;
-			}
-		}
-
-		/* Challenge response, store their challenge for our password */
-		std::map<std::string, std::string>::iterator n = this->capab->CapKeys.find("CHALLENGE");
-		if ((n != this->capab->CapKeys.end()) && (ServerInstance->Modules.FindService(SERVICE_DATA, "hash/sha256")))
-		{
-			/* Challenge-response is on now */
-			this->SetTheirChallenge(n->second);
-			if (!this->GetTheirChallenge().empty() && (this->LinkState == CONNECTING))
-			{
-				this->SendCapabilities(2);
-				this->WriteLine(fmt::format("SERVER {} {} {}{} :{}",
-					ServerInstance->Config->ServerName,
-					TreeSocket::MakePass(capab->link->SendPass, capab->theirchallenge),
-					proto_version == PROTO_INSPIRCD_3 ? "0 " : "",
-					ServerInstance->Config->ServerId,
-					ServerInstance->Config->ServerDesc
-				));
-			}
-		}
-		else
-		{
-			// They didn't specify a challenge or we don't have sha256, we use plaintext
-			if (this->LinkState == CONNECTING)
-			{
-				this->SendCapabilities(2);
-				this->WriteLine(fmt::format("SERVER {} {} {}{} :{}",
-					ServerInstance->Config->ServerName,
-					capab->link->SendPass,
-					proto_version == PROTO_INSPIRCD_3 ? "0 " : "",
-					ServerInstance->Config->ServerId,
-					ServerInstance->Config->ServerDesc
-				));
-			}
-		}
-	}
-	else if (irc::equals(params[0] , "MODULES"))
-	{
-		if (params.size() >= 2)
-			ParseModules(params[1], capab->requiredmodules);
-	}
-	else if (irc::equals(params[0], "MODSUPPORT"))
-	{
-		if (params.size() >= 2)
-			ParseModules(params[1], capab->optionalmodules);
-	}
-	else if (irc::equals(params[0], "CHANMODES") && (params.size() == 2))
-	{
-		capab->ChanModes = params[1];
-	}
-	else if (irc::equals(params[0], "USERMODES") && (params.size() == 2))
-	{
-		capab->UserModes = params[1];
-	}
-	else if (irc::equals(params[0], "EXTBANS") && (params.size() == 2))
-	{
-		capab->ExtBans = params[1];
-	}
-	else if (irc::equals(params[0], "CAPABILITIES") && (params.size() == 2))
-	{
-		irc::spacesepstream capabs(params[1]);
-		std::string item;
-		while (capabs.GetToken(item))
-		{
-			/* Process each key/value pair */
-			std::string::size_type equals = item.find('=');
-			if (equals != std::string::npos)
-			{
-				std::string var(item, 0, equals);
-				std::string value(item, equals+1);
-				capab->CapKeys[var] = value;
-			}
-		}
-	}
-	return true;
-}