Execute code from a webserver

Help and Feedback Scripting Support
#1

Currently I am trying to execute code I have stored on a webserver.
I can successfully print out the code and it all looks okay, but when I try run it using loadstring it gives me the following error
image

I have LoadstringEnabled set to true and the scripts RunContext on Legacy.

Here’s an example codeblock of what I am doing just with a swapped uri

local code = game:GetService("HttpService"):GetAsync("https://example.com/script/raw.txt")
local func, err = loadstring(code)

if code == nil then
	print(err)
else
	func()
end
#2

try printing code first, and also try decoding it if its JSON

#3

It prints out successfully and isnt json encoded

#4

The reason you are getting this error is because the returned code to the loadstring is not a function. Instead it is a bunch of code that has already been executed.

#5

How would I go about having this code executed in game? What’s being passed through to me appears to be a string value. So I don’t see how this could have been executed in game already.

#6

i think loadstring returns evaluation result.
from your error which is attempt to call a nil value, i can tell your code from your webserver doesnt return anything / returns nil

local code = game:GetService("HttpService"):GetAsync("https://example.com/script/raw.txt")
local res, err = pcall(function()
	return loadstring(code)
end)

if err then
	print(err)
else
	print("RESULT", res)
end
#8

so is your issue solved?

#9

Seems not I get this error

1: Expected identifier when parsing expression, got Unicode character U+feff

#10

in which line?

#11

Doesn’t specify as it loads in the script as a single line

#12

that means your loadstring received an invalid lua code, try opening your url in a browser and see if it’s really a valid lua code

#13

It seems to be valid lua code when I had a look just now. It also works in game outside of the loadstring.

#14

can you send your current code and your code from the web server?

#15

Sure thing.

GameScript:

local code = game:GetService("HttpService"):GetAsync("https://example.com/scripts/bans/raw.txt")
local load, err = loadstring(code)

if load ~= nil then
	load()
else
	print(err)
end

raw:

local ban_script = game:GetService('HttpService'):GetAsync('https://example.com/scripts/bans/subscript.txt') 
local code = loadstring(ban_script)
code()

subscript:

-- | Connections
local HTTPService = game:GetService("HttpService")
local Players = game:GetService("Players")

-- | Variables
local banAPI = "https://api.example.com/IsUserBanned.ashx/"
local ConsolePrefix = "Example Bans: "

-- | Connections
Players.PlayerAdded:Connect(function(player)
	local response = HTTPService:GetAsync(banAPI..player.UserId)
	local deserialized = HTTPService:JSONDecode(response)
	if not response then
		player:Kick(ConsolePrefix.."Failed to connect to BanAPI")
	end
	if deserialized.Status ~= "OK" then
		player:Kick(ConsolePrefix..deserialized.Status)
	end
	if deserialized.Banned == true then
		player:Kick(ConsolePrefix..deserialized.BanReason)
	end
end)
#16

would you mind removing the url? since you removed it on the previous one

#17

If you are wondering why there is 2 scripts on the webserver, this is because I will be hiding the 2nd one by obfuscating the first webserver script so people cant access the second one.

#18

Ok, just removed them now. Anything else?

#19

can you screenshot your output on the error?

#20

image
image1374×51 10.3 KB

#21 
local code = game:GetService("HttpService"):GetAsync("https://example.com/scripts/bans/raw.txt")
print("CODE", code)
local load, err = loadstring(code)

if load ~= nil then
	load()
else
	print(err)
end

then screenshot the output (reminder to censor your url)