Hacking an OS

settings.set("shell.allow_disk_startup", false)

Iredstone7648, on 19 January 2017 - 11:38 PM said:

Ok thanks guys. I was looking into modifying fs.isReadOnly but that would only work for my ROM file. Other than that, there's nothing more to do.

Piorjade, on 20 January 2017 - 02:02 PM said:

settings.set("shell.allow_disk_startup", false)

local protected = {
   "rom",
   "path/to/protected/file",
   "maybe/another/path"
}

function tableFind(arr, text)
	 local found = false
	 for k,v in pairs(arr) do
	    if v == text then
		  found = true
	    end
	 end
	 return found
end

fs.isReadOnly = function(path)
   return tableFind(protected, path)
end

local oldOpen = fs.open
fs.open = function(file, mode)
  if tableFind(protected, path) then
   oldOpen(file, "r")
 else
   oldOpen(file, mode)
 end
end -- Sorry about the indentation problem

local oldDelete = fs.delete
fs.delete = function(file)
   if tableFind(protected, file) then
	 return error("Access Denied")
   else
	 oldDelete(file)
   end
end

houseofkraft, on 22 January 2017 - 12:52 AM said:

If you want a way to make files read-only, you just need to paste this script into a file

(snip)

Sewbacca, on 22 January 2017 - 07:51 PM said:

The same thing and more does FSector.

Hbomb_79, on 22 January 2017 - 10:24 PM said:

Sewbacca, on 22 January 2017 - 07:51 PM said:

The same thing and more does FSector.

The shameless self-promotion is strong in this one.

os.pullEvent = os.pullEventRaw

Haddock, on 02 February 2017 - 08:21 PM said:

You could do some encryption (not recommended though)
Maybe have the user input a password to decrypt the system files on startup, so if somebody puts in a disk they wouldn't be able to modify the files without knowing the users password.
To be honest, I find it really flawed, but its worth a try.

Anavrins, on 02 February 2017 - 09:57 PM said:

Haddock, on 02 February 2017 - 08:21 PM said:

You could do some encryption (not recommended though)
Maybe have the user input a password to decrypt the system files on startup, so if somebody puts in a disk they wouldn't be able to modify the files without knowing the users password.
To be honest, I find it really flawed, but its worth a try.

In case you're referencing my post, just letting you know that both programs I stated does not decrypt on startup, but overrides fs.open to read an encrypted file and return an unencrypted handler.
Data never get's decrypted on disk, only in memory.
Of course your method is flawed, but not this one.

TechnicalCoding, on 02 February 2017 - 10:14 PM said:

The hard solution is to create your own IDE which would check if there is any errors with the LUA code that the user creates and print them out, this prevents that the user can "Crash" the OS, then also create a folder for every user that the user is limited to. for example 'users/Username/scripts' and inside this scripts folder the user can create folders and edit files, but are limited to go out of that folder.

I am currently working on an Advanced operating system and I would happily be doing a collab with you!

I am also very experienced in web languages and will create a appstore for my OS, also I will use online login forms and register forms so the user can connect to the forums and socket servers. And include graphical content such as a draw function to create boxes,

another of my current project is similar to cshtml or asp.net, basically create luahtml, so basically you will be able to use html, and create script tags where lua code will be executed. And a lot of custom events and clickable guis, etc.

Please add me on skype: technicalcoding
if you want to collaborate with me :)/>