Shuffle the modules about a bit.

1 files changed, 192 insertions, 0 deletions

diff --git a/modules/deaf.cpp b/modules/deaf.cpp
new file mode 100644
index 000000000..87eb180ce
--- /dev/null
+++ b/modules/deaf.cpp
@@ -0,0 +1,192 @@
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ *   Copyright (C) 2019 linuxdaemon <linuxdaemon.irc@gmail.com>
+ *   Copyright (C) 2019 Matt Schatz <genius3000@g3k.solutions>
+ *   Copyright (C) 2013, 2017, 2019-2023 Sadie Powell <sadie@witchery.services>
+ *   Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ *   Copyright (C) 2012 Attila Molnar <attilamolnar@hush.com>
+ *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ *   Copyright (C) 2008 Craig Edwards <brain@inspircd.org>
+ *   Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
+ *   Copyright (C) 2006-2007 Dennis Friis <peavey@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 "modules/ctctags.h"
+
+// User mode +d - filter out channel messages and channel notices
+class DeafMode final
+	: public SimpleUserMode
+{
+public:
+	DeafMode(Module* Creator)
+		: SimpleUserMode(Creator, "deaf", 'd')
+	{
+	}
+
+	bool OnModeChange(User* source, User* dest, Channel* channel, Modes::Change& change) override
+	{
+		if (!SimpleUserMode::OnModeChange(source, dest, channel, change))
+			return false;
+
+		if (change.adding)
+			dest->WriteNotice("*** You have enabled user mode +d, deaf mode. This mode means you WILL NOT receive any messages from any channels you are in. If you did NOT mean to do this, use /mode " + dest->nick + " -d.");
+
+		return true;
+	}
+};
+
+// User mode +D - filter out user messages and user notices
+class PrivDeafMode final
+	: public SimpleUserMode
+{
+public:
+	PrivDeafMode(Module* Creator)
+		: SimpleUserMode(Creator, "privdeaf", 'D')
+	{
+	}
+
+	bool OnModeChange(User* source, User* dest, Channel* channel, Modes::Change& change) override
+	{
+		if (!SimpleUserMode::OnModeChange(source, dest, channel, change))
+			return false;
+
+		if (change.adding)
+			dest->WriteNotice("*** You have enabled user mode +D, private deaf mode. This mode means you WILL NOT receive any messages and notices from any nicks. If you did NOT mean to do this, use /mode " + dest->nick + " -D.");
+
+		return true;
+	}
+};
+
+class ModuleDeaf final
+	: public Module
+	, public CTCTags::EventListener
+{
+private:
+	DeafMode deafmode;
+	PrivDeafMode privdeafmode;
+	std::string deaf_bypasschars;
+	std::string deaf_bypasschars_service;
+	bool privdeafservice;
+
+	ModResult HandleChannel(User* source, Channel* target, CUList& exemptions, bool is_bypasschar, bool is_bypasschar_service)
+	{
+		for (const auto& [member, _] : target->GetUsers())
+		{
+			// Allow if the user doesn't have the mode set.
+			if (!member->IsModeSet(deafmode))
+				continue;
+
+			// Allow if the message begins with a service char and the
+			// user is on a services server.
+			if (is_bypasschar_service && member->server->IsService())
+				continue;
+
+			// Allow if the prefix begins with a normal char and the
+			// user is not on a services server.
+			if (is_bypasschar && !member->server->IsService())
+				continue;
+
+			exemptions.insert(member);
+		}
+
+		return MOD_RES_PASSTHRU;
+	}
+
+	ModResult HandleUser(User* source, User* target)
+	{
+		// Allow if the mode is not set.
+		if (!target->IsModeSet(privdeafmode))
+			return MOD_RES_PASSTHRU;
+
+		// Reject if the source is a service and privdeafservice is disabled.
+		if (!privdeafservice && source->server->IsService())
+			return MOD_RES_DENY;
+
+		// Reject if the source doesn't have the right priv.
+		if (!source->HasPrivPermission("users/ignore-privdeaf"))
+			return MOD_RES_DENY;
+
+		return MOD_RES_PASSTHRU;
+	}
+
+public:
+	ModuleDeaf()
+		: Module(VF_VENDOR, "Adds user modes d (deaf) and D (privdeaf) which prevents users from receiving channel (deaf) or private (privdeaf) messages.")
+		, CTCTags::EventListener(this)
+		, deafmode(this)
+		, privdeafmode(this)
+	{
+	}
+
+	void ReadConfig(ConfigStatus& status) override
+	{
+		const auto& tag = ServerInstance->Config->ConfValue("deaf");
+		deaf_bypasschars = tag->getString("bypasschars");
+		deaf_bypasschars_service = tag->getString("servicebypasschars");
+		privdeafservice = tag->getBool("privdeafservice", true);
+	}
+
+	ModResult OnUserPreTagMessage(User* user, MessageTarget& target, CTCTags::TagMessageDetails& details) override
+	{
+		switch (target.type)
+		{
+			case MessageTarget::TYPE_CHANNEL:
+				return HandleChannel(user, target.Get<Channel>(), details.exemptions, false, false);
+
+			case MessageTarget::TYPE_USER:
+				return HandleUser(user, target.Get<User>());
+
+			case MessageTarget::TYPE_SERVER:
+				break;
+		}
+
+		return MOD_RES_PASSTHRU;
+	}
+
+	ModResult OnUserPreMessage(User* user, MessageTarget& target, MessageDetails& details) override
+	{
+		switch (target.type)
+		{
+			case MessageTarget::TYPE_CHANNEL:
+			{
+				// If we have no bypasschars_service in config, and this is a bypasschar (regular)
+				// Then it is obviously going to get through +d, no exemption list required
+				bool is_bypasschar = (deaf_bypasschars.find(details.text[0]) != std::string::npos);
+				if (deaf_bypasschars_service.empty() && is_bypasschar)
+					return MOD_RES_PASSTHRU;
+
+				// If it matches both bypasschar and bypasschar_service, it will get through.
+				bool is_bypasschar_service = (deaf_bypasschars_service.find(details.text[0]) != std::string::npos);
+				if (is_bypasschar && is_bypasschar_service)
+					return MOD_RES_PASSTHRU;
+
+				return HandleChannel(user, target.Get<Channel>(), details.exemptions, is_bypasschar, is_bypasschar_service);
+			}
+
+			case MessageTarget::TYPE_USER:
+				return HandleUser(user, target.Get<User>());
+
+			case MessageTarget::TYPE_SERVER:
+				break;
+		}
+
+		return MOD_RES_PASSTHRU;
+	}
+};
+
+MODULE_INIT(ModuleDeaf)