Protect a few more settings from being set from mods
Of those settings main_menu_script has concrete security impact, the rest are added out of abundance of caution.
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-- atc_rail.lua
-- registers and handles the ATC rail. Active component.
-- This is the only component that can interface with trains, so train interface goes here too.
--Using subtable
local r={}
-- Note on appr_internal:
-- The Approach callback is a special corner case: the train is not on the node, and it is executed synchronized
-- (in the train step right during LZB traversal). We therefore need access to the train id and the lzbdata table
function r.fire_event(pos, evtdata, appr_internal)
local ph=minetest.pos_to_string(pos)
local railtbl = atlatc.active.nodes[ph]
if not railtbl then
atwarn("LuaAutomation ATC interface rail at",ph,": Data not in memory! Please visit position and click 'Save'!")
return
end
--prepare ingame API for ATC. Regenerate each time since pos needs to be known
--If no train, then return false.
-- try to get the train from the event data
-- This workaround is required because the callback is one step delayed, and a fast train may have already left the node.
-- Also used for approach callback
local train_id = evtdata._train_id
local atc_arrow = evtdata._train_arrow
local train, tvel
if train_id then
train=advtrains.trains[train_id]
-- speed
tvel=train.velocity
-- if still no train_id available, try to get the train at my position
else
train_id=advtrains.get_train_at_pos(pos)
if train_id then
train=advtrains.trains[train_id]
advtrains.train_ensure_init(train_id, train)
-- look up atc_arrow
local index = advtrains.path_lookup(train, pos)
atc_arrow = (train.path_cn[index] == 1)
-- speed
tvel=train.velocity
end
end
local customfct={
atc_send = function(cmd)
if not train_id then return false end
assertt(cmd, "string")
advtrains.atc.train_set_command(train, cmd, atc_arrow)
return true
end,
split_at_index = function(index, cmd)
if not train_id then return false end
assertt(cmd, "string")
if type(index) ~= "number" then
return false
end
local new_id = advtrains.split_train_at_index(train, index)
if new_id then
minetest.after(1,advtrains.atc.train_set_command,advtrains.trains[new_id], cmd, atc_arrow)
return true
end
return false
end,
split_at_fc = function(cmd, len)
assertt(cmd, "string")
if not train_id then return false end
local new_id, fc = advtrains.split_train_at_fc(train, false, len)
if new_id then
minetest.after(1,advtrains.atc.train_set_command,advtrains.trains[new_id], cmd, atc_arrow)
end
return fc or ""
end,
split_off_locomotive = function(cmd, len)
assertt(cmd, "string")
if not train_id then return false end
local new_id, fc = advtrains.split_train_at_fc(train, true, len)
if new_id then
minetest.after(1,advtrains.atc.train_set_command,advtrains.trains[new_id], cmd, atc_arrow)
