dcopy.lua

local ecc = require "./ecc"
local t = ecc "ecc"

local thing = ...
local function fread(thing)
    local f = fs.open(thing, "r")
    local text = f.readAll()
    f.close()
    return text
end

local function hexize(key)
    local out = ""
    for _, v in pairs(key) do
        out = out .. string.format("%.2x", v)
    end
    return out
end

local function fwrite(fname, text)
    local f = fs.open(fname, "w")
    f.write(text)
    f.close()
end

local pkey = textutils.unserialise(fread ".potato_rds_priv")

while true do
    local _, side = os.pullEvent "disk"
    local mp = disk.getMountPath(side)
    local path = fs.combine(mp, "startup")
    local sig_path = fs.combine(mp, "signature")
    local UUID_path = fs.combine(mp, "UUID")
    local UUID = math.random(0, 1000000)
    print(UUID)
    disk.setLabel(side, thing)
    local text = fread(thing):gsub("@UUID@", tostring(UUID))
    --print(text, path)
    fwrite(path, text)
    print "Written data."
    fwrite(sig_path, hexize(t.sign(
        pkey,
        text
    )))
    fwrite(UUID_path, tostring(UUID))
    print "Written signature."
end