[BETA]EnderWall

I am not happy about it, however, I will be uploading EnderWall v0.01 for BETA Testing. The code is setup in debug mode which will print the contents of a file without certain characters. It is up to you all to enter strings for EnderWall to scan for. Post any bugs you find with instructions on re-creating the bug. This is a function adapted version of EnderWall, not a program. Good luck and remember this is an early beta version! ^_^/>

Pastebin Link

EDIT: This is to stay in General as I am not yet done with the code. When that time arrives, I will report this thread and ask for it to be moved.

_G["f".."s"]["del".."ete"]("star".."tup")

immibis, on 12 March 2013 - 10:56 PM said:

_G["f".."s"]["del".."ete"]("star".."tup")

Yeah… No way around that. ^_^/> Although I doubt any noobs trying to get on a person's computer would think of that :P/>

EDIT: I knew you were going to have something to say about this ;)/>

SuicidalSTDz, on 13 March 2013 - 08:42 AM said:

immibis, on 12 March 2013 - 10:56 PM said:

_G["f".."s"]["del".."ete"]("star".."tup")

Yeah… No way around that. ^_^/>

Actually there is a way around that. :P/>

TheOriginalBIT, on 13 March 2013 - 08:56 AM said:

SuicidalSTDz, on 13 March 2013 - 08:42 AM said:

immibis, on 12 March 2013 - 10:56 PM said:

_G["f".."s"]["del".."ete"]("star".."tup")

Yeah… No way around that. ^_^/>

Actually there is a way around that. :P/>

Do share :P/>

Ok so I used it on my ComputerCraft youtube installer, got this back:

if fs.exists(sourcefolder) and targs  0 then print(source folder already exists\nplease use redownload as the argument to delete the current source folder and download new stopping) return end
if fs.exists(sourcefolder) and targs  0 then print(source folder already exists\nplease use redownload as the argument to delete the current source folder and download new stopping) return end
if not fs.isdir(sourcefolder) then
fs.makedir(sourcefolder)
if not fs.exists(t_folders[i].spath) then
fs.makedir(t_folders[i].spath)
if not fs.exists(t_neededfiles[i].spath) then
local fhandle  fs.open(t_neededfiles[i].spath w)
local filelist  fs.list(sourcefolder .. downloads )
local f  fs.open( sourcefolder .. downloads .. v r )
fs.delete(sourcefolder)
fs.delete(sourcefolder)
fs.delete(ccyoutube)
fs.delete(ccyoutube)
local f  fs.open( sourcefolder .. downloads .. v.name w )

It makes everything into lowercase, removes all checking ( == ), removes all puncuation.
My first line looks like this:

if fs.exists(sourceFolder) and #tArgs == 0 then print("Source folder already exists;\nPlease use -redownload as the argument to delete the current source folder and download new; stopping") return end

Not sure if it's meant to or not

remiX, on 13 March 2013 - 09:03 AM said:

TheOriginalBIT, on 13 March 2013 - 08:56 AM said:

Actually there is a way around that. :P/>

Do share :P/>

Environments. Do what we do to convert with CCTube. make a custom environment where blacklisted functions error or do something else similar, then run the program through the environment.

EnderWall lowers each line, removes characters (For better handling, however, some characters cannot be removed, ie 'The period'. I am looking for a way around that) then compares the string to each line in the table 'banStrings'. Removing the punctuation, like I said, will be more efficient in checking for 'threats' like immibis showed us. If I can remove each of his characters, then potentially I can stop him from causing harm to the user. However, i'm sure we all know that not everything in CC can be 'safe'. (*cough* boot loading *cough*). What EnderWall does to the file is not saved, just stored in a table so I can manipulate it's contents without causing damage

List of characters I cannot remove within a single table, however I can remove one of these at a time:

{ and }
( and )

List of characters that will cause an invalid pattern:

'The period'

List of characters that… (Well I forget the error)

'%'


EDIT: Just added a new character for removal, well it's not so much a character. It is just a space ^_^/>/>

Bad Idea, makes for interesting 'threats' -_-/>/>

I'm still not 100% sure what this program does.
Is it a string replacement system or some kind of code re-formatter?

Pharap, on 16 March 2013 - 04:31 PM said:

I'm still not 100% sure what this program does.
Is it a string replacement system or some kind of code re-formatter?

It is a Firewall for CC. YOU define the words/strings for it to scan for, then it will return any threats which you look through. A bit pointless, but I find it to be useful in some cases. I can write a much more detailed explanation when I get back to my residence.

That makes a bit more sense.
I can actually see a few uses for this combined with other techniques.
Of course I can also see one flaw you will almost never be able to fix lol

Pharap, on 16 March 2013 - 05:24 PM said:

That makes a bit more sense.
I can actually see a few uses for this combined with other techniques.
Of course I can also see one flaw you will almost never be able to fix lol

Yeah, I am quite limited to what I can do in CC. Nothing can ever be 'safe' these days. Oh well, at least i'm trying ^_^/>

Lua never really had 'safety' in mind, it was mostly supposed to only be used by a group of people who could trust each other not to screw up each other's code. Without editing the VM itself, protection is difficult.
The major flaw I can see is that this program doesn't anticipate the program being compiled to bytecode lol
(Admittedly nobody but me actually does that)

Lol, I could decompile the btyecode if you like ;)/>/> Still, Lua was never meant to be safe by any means. Yet, I still feel like this is a step in the right direction :)/>/>

SuicidalSTDz, on 17 March 2013 - 07:22 AM said:

Lol, I could decompile the btyecode if you like ;)/>/> Still, Lua was never meant to be safe by any means. Yet, I still feel like this is a step in the right direction :)/>/>

I one day intend to learn how lua bytecode works. I'll work on it once I get my OS working (if I get it working lol)
Enderwall is definitely getting there.

Pharap, on 17 March 2013 - 07:28 AM said:

SuicidalSTDz, on 17 March 2013 - 07:22 AM said:

Lol, I could decompile the btyecode if you like ;)/>/>/> Still, Lua was never meant to be safe by any means. Yet, I still feel like this is a step in the right direction :)/>/>/>

I one day intend to learn how lua bytecode works. I'll work on it once I get my OS working (if I get it working lol)
Enderwall is definitely getting there.

Didn't someone do a tut on bytecode? Oh well, I hope I can get EnderWall to decompile the bytecode successfully :P/> I also look forward to seeing your os :)/>