Fix oper override message when viewing a list mode

include/modules/hidelist.h

@@ -0,0 +1,38 @@
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ *   Copyright (C) 2019 Dylan Frank <b00mx0r@aureus.pw>
+ *
+ * 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/>.
+ */
+
+
+#pragma once
+
+#include "event.h"
+
+class HideListEventListener : public Events::ModuleEventListener
+{
+ public:
+	HideListEventListener(Module* mod)
+		: ModuleEventListener(mod, "event/hidelist")
+	{
+	}
+
+	/** Called when an attempt to display a listmode will be denied
+	 * @param user The user executing the list
+	 * @param chan The channel the list is being requested on
+	 * @param modename The name of the mode being listed
+	 */
+	virtual ModResult OnListDeny(User* user, Channel* chan, const std::string& modename) = 0;
+};

src/modules/m_hidelist.cpp

@@ -18,16 +18,19 @@
 
 
 #include "inspircd.h"
+#include "modules/hidelist.h"
 
 class ListWatcher : public ModeWatcher
 {
 	// Minimum rank required to view the list
 	const unsigned int minrank;
+	Events::ModuleEventProvider evprov;
 
  public:
 	ListWatcher(Module* mod, const std::string& modename, unsigned int rank)
 		: ModeWatcher(mod, modename, MODETYPE_CHANNEL)
 		, minrank(rank)
+		, evprov(mod, "event/hidelist")
 	{
 	}
 
@@ -46,6 +49,12 @@ class ListWatcher : public ModeWatcher
 		if (user->HasPrivPermission("channels/auspex"))
 			return true;
 
+		ModResult MOD_RESULT;
+		FOREACH_MOD_CUSTOM(evprov, HideListEventListener, OnListDeny, (user, chan, GetModeName()));
+		if (MOD_RESULT == MOD_RES_ALLOW)
+			return true;
+
+
 		user->WriteNumeric(ERR_CHANOPRIVSNEEDED, chan->name, InspIRCd::Format("You do not have access to view the %s list", GetModeName().c_str()));
 		return false;
 	}

src/modules/m_override.cpp

@@ -26,6 +26,7 @@
 
 #include "inspircd.h"
 #include "modules/invite.h"
+#include "modules/hidelist.h"
 
 class Override : public SimpleUserModeHandler
 {
@@ -38,7 +39,7 @@ class Override : public SimpleUserModeHandler
 	}
 };
 
-class ModuleOverride : public Module
+class ModuleOverride : public Module, public HideListEventListener
 {
 	bool RequireKey;
 	bool NoisyOverride;
@@ -78,7 +79,8 @@ class ModuleOverride : public Module
 
  public:
 	ModuleOverride()
-		: UmodeEnabled(false)
+		: HideListEventListener(this)
+		, UmodeEnabled(false)
 		, ou(this)
 		, topiclock(this, "topiclock")
 		, inviteonly(this, "inviteonly")
@@ -174,8 +176,14 @@ class ModuleOverride : public Module
 			{
 				const Modes::Change& item = *i;
 				if (!item.param.empty())
+				{
 					params.append(1, ' ').append(item.param);
-
+				}
+				else if (item.mh->IsListMode())
+				{
+					// Listmode overrides are dealt with in OnListDeny
+					return MOD_RES_PASSTHRU;
+				}
 				char wanted_pm = (item.adding ? '+' : '-');
 				if (wanted_pm != pm)
 				{
@@ -192,6 +200,21 @@ class ModuleOverride : public Module
 		return MOD_RES_PASSTHRU;
 	}
 
+	ModResult OnListDeny(User* user, Channel* chan, const std::string& modename) CXX11_OVERRIDE
+	{
+		if (!user->IsOper() || !IS_LOCAL(user))
+			return MOD_RES_PASSTHRU;
+
+		if (CanOverride(user, "MODE"))
+		{
+			const std::string msg = user->nick + " overriding hidelist: " + modename;
+
+			ServerInstance->SNO->WriteGlobalSno('v', msg);
+			return MOD_RES_ALLOW;
+		}
+		return MOD_RES_PASSTHRU;
+	}
+
 	ModResult OnUserPreJoin(LocalUser* user, Channel* chan, const std::string& cname, std::string& privs, const std::string& keygiven) CXX11_OVERRIDE
 	{
 		if (user->IsOper())