Import a greatly refactored version of the opmoderated module.

Co-authored-by: Daniel De Graaf <danieldg@inspircd.org>.

1 files changed, 90 insertions, 0 deletions

diff --git a/src/modules/m_opmoderated.cpp b/src/modules/m_opmoderated.cpp
new file mode 100644
index 000000000..505bdec50
--- /dev/null
+++ b/src/modules/m_opmoderated.cpp
@@ -0,0 +1,90 @@
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ *   Copyright (C) 2010 Daniel De Graaf <danieldg@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"
+#include "modules/exemption.h"
+#include "modules/extban.h"
+
+class ModuleOpModerated final
+	: public Module
+	, public CTCTags::EventListener
+{
+ private:
+	CheckExemption::EventProvider exemptionprov;
+	ExtBan::Acting extban;
+	SimpleChannelMode mode;
+
+	ModResult HandleMessage(User* user, const MessageTarget& target, CUList& exemptions)
+	{
+		// We only handle messages from local users.
+		if (!IS_LOCAL(user))
+			return MOD_RES_PASSTHRU;
+
+		// We only handle messages non-statusmsg messages sent to channels.
+		if (target.type != MessageTarget::TYPE_CHANNEL || target.status)
+			return MOD_RES_PASSTHRU;
+
+		// Exempt opers who have the appropriate privileges.
+		if (user->HasPrivPermission("channels/ignore-opmoderated"))
+			return MOD_RES_PASSTHRU;
+
+		// Exempt channel members who have the appropriate privileges.
+		Channel* const chan = target.Get<Channel>();
+		if (chan->GetPrefixValue(user) > VOICE_VALUE)
+			return MOD_RES_PASSTHRU;
+
+		// Check for channel members who are exempted by a module.
+		if (CheckExemption::Call(exemptionprov, user, chan, "opmoderated") == MOD_RES_ALLOW)
+			return MOD_RES_PASSTHRU;
+
+		if (!extban.GetStatus(user, chan).check(!chan->IsModeSet(mode)))
+		{
+			// Add any unprivileged users to the exemption list.
+			for (const auto& [u, memb] : chan->GetUsers())
+			{
+				if (memb->getRank() < OP_VALUE)
+					exemptions.insert(u);
+			}
+		}
+
+		return MOD_RES_PASSTHRU;
+	}
+
+ public:
+	ModuleOpModerated()
+		: Module(VF_OPTCOMMON, "Implements opmoderated channel mode +U (non-voiced messages sent to ops) and extban 'u'.")
+		, CTCTags::EventListener(this)
+		, exemptionprov(this)
+		, extban(this, "opmoderated", 'u')
+		, mode(this, "opmoderated", 'U')
+	{
+	}
+
+	ModResult OnUserPreMessage(User* user, const MessageTarget& target, MessageDetails& details) override
+	{
+		return HandleMessage(user, target, details.exemptions);
+	}
+
+	ModResult OnUserPreTagMessage(User* user, const MessageTarget& target, CTCTags::TagMessageDetails& details) override
+	{
+		return HandleMessage(user, target, details.exemptions);
+	}
+};
+
+MODULE_INIT(ModuleOpModerated)