Before anything, I'm trying to learn, and there is no better way of doing it than trying it myself. I've done things as shown below cause I wanned to test how far I could push it and to understand how some functionalities work. To be honest, some codes there aren't even necessary lol. But i'm testing - pls, bear with me.
Ok, so, i came up with a quick fix to keep the computer functioning and run a program on background (not using any sort of shell injection or so that i've seen around, i dont think that's actually necessary here, as this is only for learning purposes)
This would be the 'Main Computer'
'startup file'
This file would allow the 'background running', per say
function startShell()
shell.run("shell")
end
function startCentral()
shell.run("central")
end
parallel.waitForAll(startCentral, startShell)
It runs another shell so it's possible to continue to use it while the 'central' program is running.
central file
This is the background runner
The comments that AREN'T indented (processing section) show the particular code for my problem
rednet.open("right")
mon = peripheral.wrap("top")
-- monitor thing is just to log. If the shell is running, i'm printing stuffs somewhere else - the monitor - so i can see incoming messages/commands
function main()
monClear()
monWrite(" -- PROGRAM RUNNING -- ")
while true do
doStuff(receive())
end
end
-- REDNET - -
function receive()
received = newReceived()
received.id, received.msg, received.p = rednet.receive()
monWrite(received.id.."-> "..received.msg)
os.sleep(1/2) -- not really needed here
return received
end
function sendAnswer(sent)
end
-- END REDNET - -
-- PROCESSING - -
function doStuff(received)
if(string.sub(received.msg, 1, 5) == "cntrl") then -- msg starting with this is a command (prevent undesired broadcast-message processing)
command = string.sub(received.msg, 6) -- remove the "cntrl" from the message, leaving only the command
monWrite("Executing Command '"..command.."'")
answer = shell.run(command)
-- here is what i meant. if the above line worked (save as 'answer' the RESULT instead of BOOLEAN), it could maybe work mainly as a 'remote prompt/shell' thing.
-- The computer would receive ANY command from rednet and execute. It wouldn't be necessary to create key-words for each of the programs available and a bunch of IFs.
if(type(answer) == "table") then
monWrite("Result: '"..textutils.serialize(answer).."'")
else
monWrite("Result: '"..tostring(answer).."'")
end
sendMsg = newMsg()
sendMsg.id = received.id
sendMsg.msg = answer -- Here the program would send the RESULT (not boolean) to the client that made the request. E.G: 'cntrldir' would get as answer the list of files and folders
sendMsg.p = receiver.p
sendAnswer(sendMsg) -- still no reason for this if the RESULT thing doesn't work
end
end
function newReceived(var1)
var1 = {}
var1 = {id = -1,
msg = "",
p = 0}
return var1
end
function newMsg(var1)
var1 = {}
var1 = {id = -1,
msg = "",
p = 0}
return var1
end
-- END PROCESSING - -
-- MONITOR - -
function monWrite(text)
x,y = mon.getCursorPos()
mon.setCursorPos(1,y+1)
mon.write(text)
end
function monClear()
mon.clear()
mon.setCursorPos(1,1)
end
-- END - -
main()
That's my little beast. I'm tired of typing, hungry and not really hopeful it'll work, but…
I'm open for discussions :)/>
