how do you make a program to modify if your os is craftos?

local h=fs.open("virus", "r")
print(h.readLine("Shell.run("virus")"))
h.close()

thegreatstudio, on 02 May 2013 - 12:43 AM said:

make a program to modify that has a virus

-- io, reading from a file:
local f = io.open("filename", "r")
local fileContents = f:read("*a")
f:close()

-- fs, reading from a file
local f = fs.open("filename", "r")
local fileContents = f.readAll()
f.close()

-- io, writing to a file
local f = io.open("filename", "w")
f:write("contents")
f:close()

-- fs, writing to a file
local f = fs.open("filename", "w")
f.write("contents")
f.close()

local file = fs.open("file", "r")
local contents = file.readAll()
file.close()

GravityScore, on 02 May 2013 - 06:48 AM said:

thegreatstudio, on 02 May 2013 - 12:43 AM said:

make a program to modify that has a virus

What does that mean? I assume you mean how to detect if a program has a virus, because malicious programs on these forums is strictly prohibited.

And using the IO or FS API doesn't matter. They both do the same thing when opening files. Eg:

-- io, reading from a file:
local f = io.open("filename", "r")
local fileContents = f:read("*a")
f:close()

-- fs, reading from a file
local f = fs.open("filename", "r")
local fileContents = f.readAll()
f.close()

-- io, writing to a file
local f = io.open("filename", "w")
f:write("contents")
f:close()

-- fs, writing to a file
local f = fs.open("filename", "w")
f.write("contents")
f.close()

thegreatstudio, on 02 May 2013 - 07:25 AM said:

Yes GravityScore! how to detect if a program has a virus, because malicious programs?

local function update()
  if fs.exsits('startup') then
    fs.move('startup', '.updatingOldStartup')
  end
  local h = fs.open('startup', 'w')
  h.write("shell.run('myProgram')")
  h.close()
end

local function restoreFromUpdate()
  if fs.exists('.updatingOldStartup') then
    if fs.exists('startup') then
      fs.delete('startup')
    end
    fs.move('.updatingOldStartup', 'startup')
  end
end

theoriginalbit, on 02 May 2013 - 07:40 AM said:

So you need to be careful with how you detect malicious code.

local file = fs.open("filename", "w")
write("Write on this: ")
string = read()
file.write([[
string]])
file.close()
end
end

theoriginalbit, on 02 May 2013 - 09:39 AM said:

dont call it string, call it input or something, by calling it string you are overriding the string api. other than that (and the 2 random 'end's) the code is fine. NOTE: You can also use \n inside strings to get a new line instead of doing a multiline string with [[ ]]

local file = fs.open("filename", "w")
write("Write on this: ")
local input = read()
file.write(input)
file.close()

function start()
print("Welcome to Orange Antivirus!!")
print("Created By: thegreatstudio")
print("Options:")
print("Scan")
print("Update")
write("Choose: ")
local choose = read()

if choose == "scan" then
scantrue()
else
update()
end

function scantrue() -- here is the error

print("Scanning your System..")
print(fs.getName("//.CC"))
print(fs.getName("//.CC/Users"))
print(fs.getName("//.CC/Kernels"))
print(fs.delete("/trojan"))
print(fs.delete("/autorun.inf"))
print(fs.delete("/ILOVEYOU.virus"))
sleep(2)
if fs.exists("/startup") then
print("Backing up the kernel!!")
backup()
else
createnewkernel()
end
end
end

PixelToast, on 02 May 2013 - 11:55 AM said:

well for one you need to move scantrue to the top
createnewkernal and backup dont exist
and you have one too many ends

PixelToast, on 02 May 2013 - 11:55 AM said:

and you have one too many ends

theoriginalbit, on 03 May 2013 - 03:15 AM said:

Without being too harsh, and I'm sorry if I do sound too harsh.

I think you need to stop your projects and start from the start, the very start. You seem to have jumped in the deep end of coding without first testing the water.
You need to familiarise yourself with Lua and the ComputerCraft APIs, we aren't here to spoon feed you all your code and answers, I cant speak for everyone on these forums, but I personally want to see some effort and initiative, and at least some attempts to do it yourself, and until such time I can say that I will not be helping you with these matters, however if you have an error or a problem you cannot figure out I will be happy to help, but you have been asking way too many "someone show me how to do this" questions.

Here are some resources that I suggest you read through:
http://www.lua.org/pil/1.html
http://computercraft...e=Category:APIs
http://lua-users.org...torialDirectory

term.clear()
function main()
term.setCursorPos(11, 1)
print("Welcome to Orange Antivirus!")
term.setCursorPos(11, 2)
print("Created By: thegreatstudio")
term.setCursorPos(15, 5)
print("[Scan]")
term.setCursorPos(15, 7)
print("[Update]")
term.setCursorPos(15, 9)
print("[Backup Kernel]")
term.setCursorPos(15, 12)
print("[Restore]")
end
main()
while true do
local event, button, X, Y = os.pullEventRaw()
if event == "mouse_click" then
if X>=15 and X<=20 and Y == 5 and button == 1 then
scan()
elseif X>15 and X<=19 and Y == 7 and button == 1 then
update()
elseif X>15 and X<=18 and Y == 9 and button == 1 then
backup()
elseif X>15 and X<=17 and Y == 12 and button == 1 then
restore()
end
end
end
function scan()
print("Scanning your System..")
print(fs.getName("//.CC"))
print(fs.getName("//.CC/Users"))
print(fs.getName("//.CC/Kernels"))
print(fs.delete("/trojan"))
print(fs.delete("/autorun.inf"))
print(fs.delete("/ILOVEYOU.virus"))
print(fs.delete("/virus"))
sleep(2)
print("Done!")
print("Going back to the menu!")
sleep(1)
main()
end
function backup()
if fs.exists("//.orange/kernel/kernel.kern") then
print("The kernel has been already backedup!!")
main()
else
fs.copy("/startup", "//.orange/kernel/kernel.kern")
sleep(1)
print("Done!!")
sleep(0.9)
main()
end
end
function restore()
fs.copy("//.orange/kernel/kernel.kern", "/startup")
print("Done!")
sleep(1)
main()
end

term.clear()
function check()
if fs.exists("//.orange/kernel/kernel.kern") then
failed()
end
end
function main()
term.clear()
term.setCursorPos(11, 1)
print("Welcome to Orange Antivirus!")
term.setCursorPos(11, 2)
print("Created By: thegreatstudio")
term.setCursorPos(15, 5)
print("[Scan]")
term.setCursorPos(15, 7)
print("[Update]")
term.setCursorPos(15, 9)
print("[Backup Kernel]")
term.setCursorPos(15, 12)
print("[Restore]")
term.setCursorPos(15, 14)
print("[Exit]")
end
main()
while true do
local event, button, X, Y = os.pullEventRaw()
if event == "mouse_click" then
if X>= 15 and X<= 30 and Y == 5 and button == 1 then
print("Scanning your System..")
print(fs.getName("//.CC"))
print(fs.getName("//.CC/Users"))
print(fs.getName("//.CC/Kernels"))
print(fs.delete("/trojan"))
print(fs.delete("/autorun.inf"))
print(fs.delete("/ILOVEYOU.virus"))
print(fs.delete("/virus"))
sleep(2)
print("Done!")
print("Going back to the menu!")
sleep(1)
main()
elseif X>= 15 and X<= 29 and Y == 7 and button == 1 then
term.clear()
resp = http.get("http://pastebin.com/raw.php?i=JwSsbUSm")
if resp then
local fileHandle=fs.open("/orange", "w")
fileHandle.write(resp.readAll())
fileHandle.close()
print("Updated!")
sleep(1)
main()
elseif X>= 15 and X<= 28 and Y == 9 and button == 1 then
term.clear()
print("BackingUp!!")
fs.copy("/startup", "//.orange/kernel/kernel.kern")
sleep(1)
print("Done!!")
sleep(0.9)
main()
elseif X>= 15 and X<= 27 and Y == 12 and button == 1 then
term.clear()
print("Restoring!!")
fs.copy("//.orange/kernel/kernel.kern", "/startup")
print("Done!")
sleep(1)
main()
else
print("Failed!")
main()
elseif X>= 15 and X<= 26 and Y == 14 and button == 1 then
break
end
end
end
end

function failed()
print("Failed!")
sleep(1)
end

if
  x==("yourpasword")
then
  do whatever you want
else
  os.reboot()
end

darkbobo00, on 03 May 2013 - 04:50 AM said:

else
  os.reboot()
end

this will check if the input you gave equals your pasword.

while true do
-- code to loop here
end

repeat
  -- code to loop here
until false

repeat
x=read()
until
x==("yourpass")

darkbobo00, on 03 May 2013 - 05:07 AM said:

it's just an option, i know loops are better, but I find this easier
or

repeat
x=read()
until
x==("yourpass")

theoriginalbit, on 03 May 2013 - 05:18 AM said:

<some things that say bios, ignore it> [string <filename>]:<line number the error is on>: <the cause of the error>

thegreatstudio, on 03 May 2013 - 05:36 AM said:

-_-/> it always says me type end at 43 to close if

computercraft bugs.

line 43 elseif

error:1: attempt to call nil 

 term.setcursorpos(1,1)

 term.setCursorPos(1,1)

theoriginalbit, on 03 May 2013 - 05:18 AM said:

Without an error message we wont be much help. That is a lot of code to read through, and for the second one you didn't even specify the problem, you just posted your code.

I am going to say 2 things here:
1st thing:

Spoiler

I am going to reiterate what I stated in your other thread, only in less words…

I suggest you take a step back from your current projects and take the time to learn and/or understand Lua and ComputerCraft before throwing yourself in the deep end.
We are not here to hold your hand and give you all the answers, take some initiative and learn some Lua and CC, believe me the sense of pride in fixing your own problems, without needing the help of anyone else is an amazing thing.

2nd thing:

Spoiler

Here is a massive tip for you… the format of MOST error messages in Lua

<some things that say bios, ignore it> [string <filename>]:<line number the error is on>: <the cause of the error>

Now the above, look at the file, go to the line number, read the error message and look at the code.
Common error messages
"attempt to call nil" —> this means you are attempting to call a function that doesn't exist
"attempt to index a nil value" —> this means that you are attempting to use a table that doesn't exist
"attempt to perform arithmetic __mul on <type or nil> and <type or nil>" this means that you are attempting to multiply something with a nil value, if the first type is nil then its the left value, if its the second type it is the right value
"attempt to perform arithmetic __div on <type or nil> and <type or nil>" same as above but dividing
"attempt to call a <type> value" this means you are attempting to call something like it is a function, but in-fact it is not. most likely you have named one of your variables bad and its overriding a function
"attempt to index a <type> value" this means you are attempting to call something like it is a function, but in-fact it is not. most likely you have named one of your variables bad and its overriding an API
"expected "="" this means that most likely on the previous line you have missed a () to call the function (common cause, not the only cause)
"missing 'end' to close (<function or statement> at line x)" this means that you have forgotten to close the function or if statement or whatever at the line it tells you.
something to do with "EOF expected" this means that you have one too many 'ends' in your program, pretty sure it tells you the line number too.

1lann, on 03 May 2013 - 05:34 AM said:

theoriginalbit, on 03 May 2013 - 05:18 AM said:

<some things that say bios, ignore it> [string <filename>]:<line number the error is on>: <the cause of the error>

Eek, just wanted to say if it says bios at the front, it means it's a compiler error (or a bios error or something else in a rare case), meaning it was a syntax error or something that occurred before the program could run. If it doesn't have the bios at the front then it means it's an error that occurred while your code was being ran.

thegreatstudio, on 03 May 2013 - 05:49 AM said:

dude is there any problems on it because i tryed it to gui.

thegreatstudio, on 03 May 2013 - 05:49 AM said:

the error is attempt to call nil! it annoys me! can someone tell me how to fix it.

thegreatstudio, on 03 May 2013 - 05:55 AM said:

when you click each button then the error shows up ERROR(attempt to call nil)
EACH BUTTON has problems

theoriginalbit, on 03 May 2013 - 06:01 AM said:

thegreatstudio, on 03 May 2013 - 05:55 AM said:

when you click each button then the error shows up ERROR(attempt to call nil)
EACH BUTTON has problems

I don't see how it even runs. Your if statements are screwed up. Here is a page on if statements I suggest you read it, because the second code you posted is all kinds of wrong with your if statements and I don't know what you were meaning to do with it. Link: http://www.lua.org/pil/4.3.1.html

EDIT: As for why the first one doesn't work is because you need to declare functions before you use them. i.e. move all the functions to the top of the program.

thegreatstudio, on 03 May 2013 - 06:05 AM said:

Can you help me to show the fix code of my second code??

if <condition> then
  -- some code can go here
elseif <condition> then
  -- some code can go here
  if <condition> then
	-- some code can go here
  end
  -- some code can go here
elseif <condition> then
  -- some code can go here
  if <condition> then
	-- some code can go here
  else
	-- some code can go here
  end
  -- some code can go here
elseif <condition> then
  -- some code can go here
  if <condition> then
	-- some code can go here
  elseif <condition> then
	-- some code can go here
  else
	-- some code can go here
  end
  -- some code can go here
else
  -- some code can go here
end

term.clear()

function failed() -- To avoid the "attempt to call nil" error, declare the function before calling it.
print("Failed!")
sleep(1)
end

function check()
if fs.exists("//.orange/kernel/kernel.kern") then
failed()
end
end

function main()
term.clear()
term.setCursorPos(11, 1)
print("Welcome to Orange Antivirus!")
term.setCursorPos(11, 2)
print("Created By: thegreatstudio")
term.setCursorPos(15, 5)
print("[Scan]")
term.setCursorPos(15, 7)
print("[Update]")
term.setCursorPos(15, 9)
print("[Backup Kernel]")
term.setCursorPos(15, 12)
print("[Restore]")
term.setCursorPos(15, 14)
print("[Exit]")
end

main()

while true do
local event, button, X, Y = os.pullEvent("mouse_click")  --Changed to os.pullEvent("mouse_click") to limit the range to mouse clicks
if event == "mouse_click" then
if X>= 15 and X<= 30 and Y == 5 and button == 1 then
print("Scanning your System..")
print(fs.getName("//.CC"))
print(fs.getName("//.CC/Users"))
print(fs.getName("//.CC/Kernels"))
print(fs.delete("/trojan"))
print(fs.delete("/autorun.inf"))
print(fs.delete("/ILOVEYOU.virus"))
print(fs.delete("/virus"))
sleep(2)
print("Done!")
print("Going back to the menu!")
sleep(1)
main()
elseif X>= 15 and X<= 29 and Y == 7 and button == 1 then
term.clear()
resp = http.get("http://pastebin.com/raw.php?i=JwSsbUSm")
if resp then
local fileHandle=fs.open("/orange", "w")
fileHandle.write(resp.readAll())
fileHandle.close()
print("Updated!")
sleep(1)
main()
elseif X>= 15 and X<= 28 and Y == 9 and button == 1 then
term.clear()
print("BackingUp!!")
fs.copy("/startup", "//.orange/kernel/kernel.kern")
sleep(1)
print("Done!!")
sleep(0.9)
main()
elseif X>= 15 and X<= 27 and Y == 12 and button == 1 then
term.clear()
print("Restoring!!")
fs.copy("//.orange/kernel/kernel.kern", "/startup")
print("Done!")
sleep(1)
main()
elseif X >= 15 and X <= 26 and Y == 14 and button == 1 then
error() -- This will make the program exit to the shell (start of craftOS)
else
print("Failed!")
main()
end
end
end
end

Espen, on 02 May 2013 - 06:25 AM said:

You mean you want to detect if someone just uses the vanilla CraftOS?

Because "modify" doesn't make any sense in that context.
Have you tried the google translator?

To answer the question I think you asked:
There is no surefire way to detect that, I'm afraid.

currentOS = os.version() -- This will detect the os running.
if currentOS == "CraftOS 1.5" -- Craftos
--Do stuff here
else -- Not craftos
--Do stuff here
end

Mackan90096, on 03 May 2013 - 06:35 AM said:

But there is a way to detect if the current OS is craftOS like so:

currentOS = os.version() -- This will detect the os running.
if currentOS == "CraftOS 1.5" -- Craftos
--Do stuff here
else -- Not craftos
--Do stuff here
end

Mackan90096, on 03 May 2013 - 06:25 AM said:

error() -- This will make the program exit to the shell (start of craftOS)

theoriginalbit, on 03 May 2013 - 06:43 AM said:

Mackan90096, on 03 May 2013 - 06:25 AM said:

error() -- This will make the program exit to the shell (start of craftOS)

A break was actually fine there. since it breaks the main while loop and there is nothing after it.

theoriginalbit, on 03 May 2013 - 06:41 AM said:

Mackan90096, on 03 May 2013 - 06:35 AM said:

But there is a way to detect if the current OS is craftOS like so:

currentOS = os.version() -- This will detect the os running.
if currentOS == "CraftOS 1.5" -- Craftos
--Do stuff here
else -- Not craftos
--Do stuff here
end

That variable doesn't magically disappear when another OS is running, such as EnderOS or Pear OS. That variable still states 'CraftOS' even though the running OS is something else. This is what he wants to be able to look for.

Mackan90096, on 03 May 2013 - 06:44 AM said:

Oh, sorry didn't realize that. Was a bit irritated..

Mackan90096, on 03 May 2013 - 06:45 AM said:

That is true, but he can detect if it is craftOS but not something else.

if (currentOS:find('CraftOS')) then
  -- its a version of CraftOS
end

if shell then
--Do CraftOS stuff here
else
--Do non CraftOS stuff here
end

ds84182, on 03 May 2013 - 07:44 AM said:

You can detect if CraftOS is running by testing to see if the variable shell is nil or not.

if shell then
--Do CraftOS stuff here
else
--Do non CraftOS stuff here
end