add atlatc_sync and atlatc_sync_seturl privileges

sync.patch

 diff -ruN advtrains/advtrains_luaautomation/chatcmds.lua patched/chatcmds.lua
 --- advtrains/advtrains_luaautomation/chatcmds.lua	2021-10-22 23:53:01.048355212 +0200
-+++ patched/chatcmds.lua	2021-10-23 00:09:17.355062968 +0200
++++ patched/chatcmds.lua	2021-10-23 17:04:56.534525594 +0200
 @@ -1,6 +1,13 @@
  --chatcmds.lua
  --Registers commands to modify the init and step code for LuaAutomation
@@ -38,7 +38,7 @@ diff -ruN advtrains/advtrains_luaautomation/chatcmds.lua patched/chatcmds.lua
 +		.."field[.5,.6;11.5,1;sync_url;URL;"..url.."]"
 +		.."label[.5,1.2;"..minetest.formspec_escape("Be careful! This replaces the current init code for env "..env.name.." with the contents at the URL!").."]"
 +		.."button[8.5,2;2.5,1;urlsave;Save URL only]"
-+		.."label[4,0;"..msg.."]"
++		.."label[2.5,0;"..msg.."]"
 +	if http then
 +		form = form.."button[1,2;3,1;replace;Replace init code] button[4.5,2;3.5,1;replacerun;Replace and Run init code]"
 +	else
@@ -47,7 +47,7 @@ diff -ruN advtrains/advtrains_luaautomation/chatcmds.lua patched/chatcmds.lua
  	return form
  end
  
-@@ -119,6 +151,44 @@
+@@ -119,6 +151,53 @@
  		return
  	end
  	
@@ -58,8 +58,13 @@ diff -ruN advtrains/advtrains_luaautomation/chatcmds.lua patched/chatcmds.lua
 +
 +		if fields.replace or fields.replacerun or fields.urlsave then
 +			if fields.sync_url ~= env.sync_url then
++				if minetest.check_player_privs(pname, {atlatc_sync_seturl=true}) then
 +					env.sync_url = fields.sync_url
 +					env.sync_err = nil
++				else
++					minetest.show_formspec(pname, formname, get_sync_form(env, pname, "You don't have the privilege to set the URL for the init code. (atlatc_sync_seturl)"))
++					return
++				end
 +			end
 +		end
 +		if env.syncing then return end
@@ -81,9 +86,13 @@ diff -ruN advtrains/advtrains_luaautomation/chatcmds.lua patched/chatcmds.lua
 +		end
 +
 +		if fields.replace or fields.replacerun then
++			if minetest.check_player_privs(pname, {atlatc_sync=true}) then
 +				env.syncing = true
 +				env:sync_initcode(cb)
 +			else
++				minetest.show_formspec(pname, formname, get_sync_form(env, pname, "You don't have the privilege to sync the init code. (atlatc_sync)"))
++			end
++		else
 +			cb()
 +		end
 +		return
@@ -92,7 +101,7 @@ diff -ruN advtrains/advtrains_luaautomation/chatcmds.lua patched/chatcmds.lua
  	envname=string.match(formname, "^atlatc_envsetup_(.+)$")
  	if not envname then return end
  	
-@@ -138,4 +208,7 @@
+@@ -138,4 +217,7 @@
  		env:run_initcode()
  		minetest.show_formspec(pname, formname, get_init_form(env, pname))
  	end
@@ -179,8 +188,8 @@ diff -ruN advtrains/advtrains_luaautomation/environment.lua patched/environment.
  
 diff -ruN advtrains/advtrains_luaautomation/init.lua patched/init.lua
 --- advtrains/advtrains_luaautomation/init.lua	2021-10-22 23:53:01.048355212 +0200
-+++ patched/init.lua	2021-10-22 23:54:24.418074075 +0200
-@@ -8,7 +8,7 @@
++++ patched/init.lua	2021-10-23 15:16:26.752563986 +0200
+@@ -8,9 +8,11 @@
  --Privilege
  --Only trusted players should be enabled to build stuff which can break the server.
  
@@ -188,8 +197,12 @@ diff -ruN advtrains/advtrains_luaautomation/init.lua patched/init.lua
 +atlatc = { envs = {}, setup_http = {} }
  
  minetest.register_privilege("atlatc", { description = "Player can place and modify LUA ATC components. Grant with care! Allows to execute bad LUA code.", give_to_singleplayer = false, default= false })
++minetest.register_privilege("atlatc_sync", { description = "Player can overwrite init code of LUA ATC environments with content at a remote URL. GRANT WITH MUCH CARE! Allows to easily introduce and execute bad LUA code if able to influence the code the set URL is pointing to.", give_to_singleplayer = false, default= false })
++minetest.register_privilege("atlatc_sync_seturl", { description = "Player can set the sync URL of LUA ATC environments. GRANT WITH EXTREME CARE! Allows to immediately introduce and execute any bad LUA code. Best leave this to admins.", give_to_singleplayer = false, default= false })
  
-@@ -22,9 +22,9 @@
+ --Size of code input forms in X,Y notation. Must be at least 10x10
+ atlatc.CODE_FORM_SIZE = "15,12"
+@@ -22,9 +24,9 @@
  	end
  end
  
@@ -201,7 +214,7 @@ diff -ruN advtrains/advtrains_luaautomation/init.lua patched/init.lua
  end
  dofile(mp.."/environment.lua")
  dofile(mp.."/interrupt.lua")
-@@ -98,6 +98,17 @@
+@@ -98,6 +100,17 @@
  	return save_tbl
  end