function upload()
file = fs.open(up,"r")
text = file.readAll()
file.close()
rednet.send(id,"file upload "..fn)
rednet.send(id,text)
rednet.send(id,name)
rednet.send(id,pass)
mainshell()
end

function download()
rednet.send(id,"file download "..fn)
rednet.send(id,"nil")
rednet.send(id,name)
rednet.send(id,pass)
idc,text,weg = rednet.receive()
file = fs.open(pa,"w")
file.write(text)
file.close()
mainshell()
end

function list()
  rednet.send(id,"file list")
  rednet.send(id,"nil")
  rednet.send(id,name)
  rednet.send(id,pass)
  idc,text,weg = rednet.receive()
  print(text)
  mainshell()
end

function delete()
  rednet.send(id,"file delete "..del)
  rednet.send(id,"nil")
  rednet.send(id,name)
  rednet.send(id,pass)
  mainshell()
end

function mainshell()
	write("OwncloudFile> ")
	sh = read()
	if sh == "upload" then
		print("Select file to upload")
		write("Upload> ")
		up = read()
		print("Name in Owncloud")
		write("Name> ")
		fn = read()
		upload()
 elseif sh == "download" then
   print("Select the File to download")
   write("Download> ")
   dow = read()
   print("Select path to save the file")
   write("Save> ")
   pa = read()
   download()
 elseif sh == "list" then
   list()
 elseif sh == "delete" then
   print("What File do you want to delete?")
   write("Delete> ")
   del = read()
   delete()
 elseif sh == "help" then
   print("upload to upload a file")
   print("download to download a file")
   print("list to list all files in your cloud")
   print("delete to delete a file in your cloud")
   print("exit to close the program")
   print("ver to see the version of the program")
   mainshell()
 elseif sh == "ver" then
   print("Version 1.0.0")
   mainshell()
 elseif sh == "exit" then
   exit = 1
 else
   print("Unknown command. Enter help to see all commands")
   mainshell()
 end
end

write("Please enter the ID of your Owncloud Server:")
idr = read()
write("Please enter your username:")
name = read()
write("Please enter your password:")
pass = read("*")
write("Please enter the side of your Modem:")
modem = read()
rednet.open(modem)
id = tonumber(idr)
rednet.send(id,"logintest")
rednet.send(id,"nil")
rednet.send(id,name)
rednet.send(id,pass)
id,con,weg = rednet.receive(4)
if con == nil then
  print("Can't connect to "..idr..". Are you sure, that Owncloud is running on this computer?")
elseif con == "Wrong login" then
  print("Login failed. If you don't know your login, try as root as user and password")
else
  mainshell()
end