Add visa command (#1)

* add visa functionality for testing

* Update README.md

* Update README.md

README.md

@@ -1,4 +1,12 @@
 # border
 Adds a border command to minetest to stop new players joining, an essential command in the server admins toolbox. Useful for preventing trolls returning repeatedly on different ip addresses, the border is maintained across server restarts and allows all your existing players transparent access.
 
-Supports sauth mod.
+Commands:
+
+``` /border```
+
+Toggles the border, default is border open.
+
+``` /visa <player>```
+
+Opens a 5 minute window on the name supplied to allow a new player to join without dropping the border

init.lua

@@ -6,6 +6,7 @@ with persistence of the last state across server restarts
 
 local mod_data = minetest.get_mod_storage()
 local border = "OPEN"
+local visa = {}
 
 -- initialise
 if mod_data:get_string("status") == "" then
@@ -37,6 +38,23 @@ minetest.register_chatcommand("border", {
     end
   })
 
+minetest.register_chatcommand("visa", {
+	params = "player",
+	description = "Adds a temporary visa allowing a new player to create an account",
+	privs = {server = true},
+	func = function (name, param)
+		if not param then
+			minetest.chat_send_player(name, "Use: /visa <name>")
+		end
+		if not visa[param] then
+			visa[param] = true
+			minetest.after(300, function(name)
+				if visa[name] then visa[name] = nil end
+				end, param)
+		end
+    end
+  })
+
 -- register hook
 minetest.register_on_prejoinplayer(function(name, ip)
 	-- owner exception
@@ -45,8 +63,9 @@ minetest.register_on_prejoinplayer(function(name, ip)
 	end
 	-- stop NEW players from joining
 	local player = minetest.get_auth_handler().get_auth(name)
-	if border == "CLOSED" and not player then
+	if border == "CLOSED" and not player and not visa[name] then
 			return ("\nSorry, no new players being admitted at this time!")
 	end
+	if visa[name] then visa[name] = nil end
 end
 )