Add desc. and depends to mod.conf

.luacheckrc

@@ -3,7 +3,7 @@ allow_defined_top = true
 
 read_globals = {
 	"DIR_DELIM",
-	"minetest", "core",
+	"core",
 	"dump",
 	"vector", "nodeupdate",
 	"VoxelManip", "VoxelArea",
@@ -11,5 +11,10 @@ read_globals = {
 	"intllib",
 	"default",
 	"rules",
+	"email",
 	table = { fields = { "copy", "getn" } }
 }
+
+globals = {
+	"minetest"
+}

depends.txt

@@ -1 +1,2 @@
 rules?
+email?

init.lua

@@ -83,10 +83,14 @@ function filter.mute(name, duration)
 	muted[name] = true
 
 	minetest.after(duration * 60, function()
+		privs = minetest.get_player_privs(name)
+		if privs.shout == true then
+			return
+		end
+
 		muted[name] = nil
 		minetest.chat_send_player(name, "Chat privilege reinstated. Please do not abuse chat.")
 
-		local privs = minetest.get_player_privs(name)
 		privs.shout = true
 		minetest.set_player_privs(name, privs)
 	end)
@@ -135,10 +139,20 @@ function filter.on_violation(name, message)
 		end
 	end
 
-	minetest.log("action", "VIOLATION (" .. resolution .. "): <" .. name .. "> "..  message)
+	local logmsg = "VIOLATION (" .. resolution .. "): <" .. name .. "> "..  message
+	minetest.log("action", logmsg)
+
+	local email_to = minetest.settings:get("filter.email_to")
+	if email_to and minetest.global_exists("email") then
+		email.send_mail(name, email_to, logmsg)
+	end
 end
 
 table.insert(minetest.registered_on_chat_messages, 1, function(name, message)
+	if message:sub(1, 1) == "/" then
+		return
+	end
+
 	local privs = minetest.get_player_privs(name)
 	if not privs.shout and muted[name] then
 		minetest.chat_send_player(name, "You are temporarily muted.")
@@ -151,6 +165,33 @@ table.insert(minetest.registered_on_chat_messages, 1, function(name, message)
 	end
 end)
 
+
+local function make_checker(old_func)
+	return function(name, param)
+		if not filter.check_message(name, param) then
+			filter.on_violation(name, param)
+			return false
+		end
+
+		return old_func(name, param)
+	end
+end
+
+for name, def in pairs(minetest.registered_chatcommands) do
+	if def.privs and def.privs.shout then
+		def.func = make_checker(def.func)
+	end
+end
+
+local old_register_chatcommand = minetest.register_chatcommand
+function minetest.register_chatcommand(name, def)
+	if def.privs and def.privs.shout then
+		def.func = make_checker(def.func)
+	end
+	return old_register_chatcommand(name, def)
+end
+
+
 local function step()
 	for name, v in pairs(violations) do
 		violations[name] = math.floor(v * 0.5)

mod.conf

@@ -1 +1,3 @@
 name = filter
+description = A chat filter for servers.
+optional_depends = rules,email